Lupus

Autoimmune disease in which the immune system attacks healthy tissue

"SLE" redirects here. For other uses, see SLE (disambiguation).

This article is about the most common type of lupus. For the broader group of diseases, see Lupus erythematosus. For other uses, see Lupus (disambiguation).

Parts of this article (those related to new drug possibilities) need to be updated. Please help update this article to reflect recent events or newly available information. (December 2023)

|

Medical condition

Lupus

Other names| Systemic lupus erythematosus (SLE)
Young woman with the distinctive butterfly rash that many individuals with lupus experience
Pronunciation|

* /sɪˈstɛmɪk ˈluːpəs ˌɛrɪθiːməˈtoʊsəs/ ⓘ sist-EM-ik LOO-pəs ERR-ith-ee-mə-TOH-səs

Specialty| Rheumatology
Symptoms| Painful and swollen joints, fever, chest pain, hair loss, mouth ulcers, swollen lymph nodes, feeling tired, red rash[1]
Usual onset| 15–45 years of age[1][2]
Duration| Long term[1]
Causes| Unclear[1]
Diagnostic method| Based on symptoms and blood tests[1]
Medication| NSAIDs, corticosteroids, immunosuppressants, hydroxychloroquine, methotrexate[1]
Prognosis| 15 year survival ~80%[3]
Frequency| 2–7 per 10,000[2]

Lupus, formally called systemic lupus erythematosus (SLE), is an autoimmune disease in which the body's immune system mistakenly attacks healthy tissue in many parts of the body.[1] Symptoms vary among people and may be mild to severe.[1] Common symptoms include painful and swollen joints, fever, chest pain, hair loss, mouth ulcers, swollen lymph nodes, feeling tired, and a red rash which is most commonly on the face.[1] Often there are periods of illness, called flares, and periods of remission during which there are few symptoms.[1] Children up to 18 years old develop a more severe form of SLE termed childhood-onset systemic lupus erythematosus.[4]

The cause of SLE is not clear.[1] It is thought to involve a combination of genetics and environmental factors.[5] Among identical twins, if one is affected there is a 24% chance the other one will also develop the disease.[1] Female sex hormones, sunlight, smoking, vitamin D deficiency, and certain infections are also believed to increase a person's risk.[5] The mechanism involves an immune response by autoantibodies against a person's own tissues.[1] These are most commonly anti-nuclear antibodies and they result in inflammation.[1] Diagnosis can be difficult and is based on a combination of symptoms and laboratory tests.[1] There are a number of other kinds of lupus erythematosus including discoid lupus erythematosus, neonatal lupus, and subacute cutaneous lupus erythematosus.[1]

There is no cure for SLE,[1] but there are experimental and symptomatic treatments.[6] Treatments may include NSAIDs, corticosteroids, immunosuppressants, hydroxychloroquine, and methotrexate.[1] Although corticosteroids are rapidly effective, long-term use results in side effects.[7] Alternative medicine has not been shown to affect the disease.[1] Men have higher mortality.[8] SLE significantly increases the risk of cardiovascular disease, with this being the most common cause of death.[5] While women with lupus have higher-risk pregnancies, most are successful.[1]

Rate of SLE varies between countries from 20 to 70 per 100,000.[2] Women of childbearing age are affected about nine times more often than men.[5] While it most commonly begins between the ages of 15 and 45, a wide range of ages can be affected.[1][2] Those of African, Caribbean, and Chinese descent are at higher risk than those of European descent.[5][2] Rates of disease in the developing world are unclear.[9] Lupus is Latin for 'wolf': the disease was so-named in the 13th century as the rash was thought to appear like a wolf's bite.[10]

## Signs and symptoms

[edit]

Common symptoms of SLE[11]

SLE is one of several diseases known as "the great imitator" because it often mimics or is mistaken for other illnesses.[12] SLE is a classical item in differential diagnosis,[13] because SLE symptoms vary widely and come and go unpredictably. Diagnosis can thus be elusive, with some people having unexplained symptoms of SLE for years before a definitive diagnosis is reached.[14]

Common initial and chronic complaints include fever, malaise, joint pains, muscle pains, and fatigue. Because these symptoms are so often seen in association with other diseases, these signs and symptoms are not part of the diagnostic criteria for SLE. When occurring in conjunction with other signs and symptoms, however, they are considered suggestive.[15]

While SLE can occur in both males and females, it is found far more often in women, and the symptoms associated with each sex are different.[8] Females tend to have a greater number of relapses, a low white blood cell count, more arthritis, Raynaud syndrome, and psychiatric symptoms. Males tend to have more seizures, kidney disease, serositis (inflammation of tissues lining the lungs and heart), skin problems, and peripheral neuropathy.[16]

### Skin

[edit]

Lupus patches on the cheek, ear, and scalp Widespread lupus patches across the face with an epithelioma

As many as 70% of people with lupus have some skin symptoms. The three main categories of lesions are chronic cutaneous (discoid) lupus, subacute cutaneous lupus, and acute cutaneous lupus. People with discoid lupus may exhibit thick, red scaly patches on the skin. Similarly, subacute cutaneous lupus manifests as red, scaly patches of skin but with distinct edges. Acute cutaneous lupus manifests as a rash. Some have the classic malar rash (commonly known as the butterfly rash) associated with the disease.[17] This rash occurs in 30–60% of people with SLE.[18]

Hair loss, mouth and nasal ulcers, and lesions on the skin are other possible manifestations.[19]

### Muscles and bones

[edit]

The most commonly sought medical attention is for joint pain, with the small joints of the hand and wrist usually affected, although all joints are at risk. More than 90 percent of those affected will experience joint or muscle pain at some time during the course of their illness.[20] Unlike rheumatoid arthritis, lupus arthritis is less disabling and usually does not cause severe destruction of the joints. Fewer than ten percent of people with lupus arthritis will develop deformities of the hands and feet.[20] People with SLE are at particular risk of developing osteoarticular tuberculosis.[21]

A possible association between rheumatoid arthritis and SLE has been suggested,[22] and SLE may be associated with an increased risk of bone fractures in relatively young women.[23]

### Blood

[edit]

Anemia is common in children with SLE[24] and develops in about 50% of cases.[25] Low platelet count (thrombocytopenia) and low white blood cell count (leukopenia) may be due to the disease or a side effect of pharmacological treatment. People with SLE may have an association with antiphospholipid antibody syndrome[26] (a thrombotic disorder), wherein autoantibodies to phospholipids are present in their serum. Abnormalities associated with antiphospholipid antibody syndrome include a paradoxical prolonged partial thromboplastin time (which usually occurs in hemorrhagic disorders) and a positive test for antiphospholipid antibodies; the combination of such findings have earned the term "lupus anticoagulant-positive". Another autoantibody finding in SLE is the anti-cardiolipin antibody, which can cause a false positive test for syphilis.[27]

### Heart

[edit]

SLE may cause pericarditis (inflammation of the outer lining surrounding the heart), myocarditis (inflammation of the heart muscle), or endocarditis (inflammation of the inner lining of the heart). The endocarditis of SLE is non-infectious, and is also called Libman–Sacks endocarditis. It involves either the mitral valve or the tricuspid valve. Atherosclerosis also occurs more often and advances more rapidly than in the general population.[28][29]

Steroids are sometimes prescribed as an anti-inflammatory treatment for lupus; however, they can increase one's risk for heart disease, high cholesterol, and atherosclerosis.[30]

### Lungs

[edit]

SLE can cause pleuritic pain as well as inflammation of the pleurae known as pleurisy, which can rarely give rise to shrinking lung syndrome involving a reduced lung volume.[31][32] Other associated lung conditions include pneumonitis, chronic diffuse interstitial lung disease, pulmonary hypertension, pulmonary emboli, and pulmonary hemorrhage.[33][34]

### Kidneys

[edit]

Painless passage of blood or protein in the urine may often be the only presenting sign of kidney involvement. Acute or chronic renal impairment may develop with lupus nephritis, leading to acute or end-stage kidney failure. Because of early recognition and management of SLE with immunosuppressive drugs or corticosteroids,[35] end-stage renal failure occurs in less than 5%[36][37] of cases, except in the black population, where the risk is many times higher.

The histological hallmark of SLE is membranous glomerulonephritis with "wire loop" abnormalities.[38] This finding is due to immune complex deposition along the glomerular basement membrane, leading to a typical granular appearance in immunofluorescence testing.

### Neuropsychiatric

[edit]

Further information: Neuropsychiatric systemic lupus erythematosus

Neuropsychiatric syndromes can result when SLE affects the central or peripheral nervous system. The American College of Rheumatology defines 19 neuropsychiatric syndromes in systemic lupus erythematosus.[39] The diagnosis of neuropsychiatric syndromes concurrent with SLE (now termed as NPSLE),[40] is one of the most difficult challenges in medicine, because it can involve so many different patterns of symptoms, some of which may be mistaken for signs of infectious disease or stroke.[41]

A common neurological disorder people with SLE have is headache,[42] although the existence of a specific lupus headache and the optimal approach to headache in SLE cases remains controversial.[43] Other common neuropsychiatric manifestations of SLE include cognitive disorder, mood disorder, cerebrovascular disease,[42] seizures, polyneuropathy,[42] anxiety disorder, psychosis, depression, and in some extreme cases, personality disorders.[44] Steroid psychosis can also occur as a result of treating the disease.[40] It can rarely present with intracranial hypertension syndrome, characterized by an elevated intracranial pressure, papilledema, and headache with occasional abducens nerve paresis, absence of a space-occupying lesion or ventricular enlargement, and normal cerebrospinal fluid chemical and hematological constituents.[45]

More rare manifestations are acute confusional state, Guillain–Barré syndrome, aseptic meningitis, autonomic disorder, demyelinating syndrome, mononeuropathy (which might manifest as mononeuritis multiplex), movement disorder (more specifically, chorea), myasthenia gravis, myelopathy, cranial neuropathy and plexopathy.[46]

Neurological disorders contribute to a significant percentage of morbidity and mortality in people with lupus.[47] As a result, the neural side of lupus is being studied in hopes of reducing morbidity and mortality rates.[39] One aspect of this disease is severe damage to the epithelial cells of the blood–brain barrier. In certain regions, depression affects up to 60% of women with SLE.[48]

### Eyes

[edit]

Up to one-third of patients report that their eyes are affected. The most common diseases are dry eye syndrome and secondary Sjögren's syndrome, but episcleritis, scleritis, retinopathy (more often affecting both eyes than one), ischemic optic neuropathy, retinal detachment, and secondary angle-closure glaucoma may occur. In addition, the medications used to treat SLE can cause eye disease: long-term glucocorticoid use can cause cataracts and secondary open-angle glaucoma, and long-term hydroxychloroquine treatment can cause vortex keratopathy and maculopathy.[49]

### Reproductive

[edit]

Further information: Lupus and pregnancy

While most pregnancies have positive outcomes, there is a greater risk of adverse events occurring during pregnancy.[50] SLE causes an increased rate of fetal death in utero and spontaneous abortion (miscarriage). The overall live-birth rate in people with SLE has been estimated to be 72%.[51] Pregnancy outcome appears to be worse in people with SLE whose disease flares up during pregnancy.[52]

Neonatal lupus is the occurrence of SLE symptoms in an infant born from a mother with SLE, most commonly presenting with a rash resembling discoid lupus erythematosus, and sometimes with systemic abnormalities such as heart block or enlargement of the liver and spleen.[53] Neonatal lupus is usually benign and self-limited.[53]

Medications for treatment of SLE can carry severe risks for female and male reproduction. Cyclophosphamide (also known as Cytoxan), can lead to infertility by causing premature ovarian insufficiency (POI), the loss of normal function of one's ovaries prior to age forty.[54] Methotrexate can cause termination or deformity in fetuses and is a common abortifacient, and for men taking a high dose and planning to father, a discontinuation period of 6 months is recommended before insemination.[55]

### Systemic

[edit]

Fatigue in SLE is probably multifactorial and has been related to not only disease activity or complications such as anemia or hypothyroidism, but also to pain, depression, poor sleep quality, poor physical fitness and lack of social support.[56][57]

## Causes

[edit]

### Vitamin D deficiency

[edit]

Some studies have found that vitamin D deficiency (i.e., a low serum level of vitamin D) often occurs in patients with SLE and that its level is particularly low in patients with more active SLE.[58][59] Furthermore, 5 studies reported that SLE patients treated with vitamin D had significant reductions in the activity of their disease.[60] However, other studies have found that the levels of vitamin D in SLE are not low, that vitamin D does not reduce their SLE's activity, and/or that the vitamin D levels and responses to vitamin D treatment varied in different patient populations (i.e., varied based on whether the study was conducted on individuals living in Africa or Europe). Because of these conflicting findings, the following middle ground has been proposed for using vitamin D to treat SLE: a) patients with SLE that have 25-hydroxyvitamin D2 plus 25-hydroxyvitamin D3 serum levels less than 30 ng/ml should be treated with vitamin D to keep these levels at or above 30 ng/ml or, in patients having major SLE-related organ involvement, at 36 to 40 ng/ml and b) patients with 25-hydroxyvitamin D2 plus 25-hydroxyvitamin D3 levels at or above 30 ng/ml should not be treated with vitamin D unless they have major SLE-related organ involvement in which case they should be treated with 25-hydroxyvitamin D2 plus 25-hydroxyvitamin D3 to maintain their serum vitamin D levels between 36 and 40 ng/ml.[61]

### Genetics

[edit]

Studies of identical twins (i.e., twins that develop from the same fertilized egg) and genome-wide association studies have identified numerous genes that by themselves promote the development of SLE, particularly childhood-onset SLE, i.e., cSLE, in rare cases of SLE/cSLE.[62][63][64] The single-gene (also termed monogenic) causes of cSLE (or a cSLE-like disorder) develop in individuals before they reach 18 years of age. cSLE typically is more severe and potentially lethal than adult-onset SLE because it often involves SLE-induced neurologic disease, renal failure, and/or the macrophage activation syndrome.[4] Mutations in about 40 genes have been reported to cause cSLE and/or a cSLE-like disease.[63] These genes include 5 which as of February, 2024 were classified as inborn errors of immunity genes, i.e., DNASE1L3, TREX1, IFIH1, Tartrate-resistant acid phosphatase and PRKCD[65][66][67] and 28 other genes, i.e., NEIL3, TMEM173, ADAR1, NRAS, SAMHD1, SOS1, FASLG, FAS receptor gene, RAG1, RAG2, DNASE1, SHOC2, KRAS, PTPN11, PTEN, BLK, RNASEH2A, RNASEH2B, RNASEH2C, Complement component 1qA, Complement component 1qB, Complement component 1r, Complement component 1s, Complement component 2, Complement component 3, UNC93B1, and the two complement component 4 genes ,C4A and C4B.[64][65][68][69] (The C4A and C4B genes code respectively for complement component A and complement component B proteins. These two proteins combine to form the complement component 4 protein which plays various roles in regulating immune function. Individuals normally have multiple copies of the C4A and C4B gene but if they have reduced levels of one and/or both of these genes make low levels of complement component 4 protein and thereby are at risk for developing cSLE or a cSLE-like disorders.[70][71])(Note that mutations in the UNC93B1 gene may cause either cSLE or the chilblain lupus erythematosus form of cSLE.[69])

Mutations in a wide range of other genes do not by themselves cause SLE but two or more of them may act together, act in concert with environmental factors, or act in some but not other populations (e.g., cause SLE in Chinese but not Europeans) to cause SLE or an SLE-like syndrome but do so in only a small percentage of cases.[63][72] The development of a genetically-regulated trait or disorder that is dependent on the inheritance of two or more genes is termed oligogenic inheritance or polygenic inheritance.[73][74]

SLE is regarded as a prototype disease due to the significant overlap in its symptoms with other autoimmune diseases.[75]

Patients with SLE have higher levels of DNA damage than normal subjects, and several proteins involved in the preservation of genomic stability show polymorphisms, some of which increase the risk for SLE development.[76] Defective DNA repair is a likely mechanism underlying lupus development.[77]

### Drug-induced SLE

[edit]

Drug-induced lupus erythematosus is a (generally) reversible condition that usually occurs in people being treated for a long-term illness. Drug-induced lupus mimics SLE. However, symptoms of drug-induced lupus generally disappear once the medication that triggered the episode is stopped.[13][78] While there are no established criteria for diagnosing drug-induced SLE, most authors have agreed on the following definition: the afflicted patient had a sufficient and continuing exposure to the drug, at least one symptom compatible with SLE, no history suggestive of SLE before starting the drug, and resolution of symptoms within weeks or months after stopping intake of the drug. The VigiBase drug safety data repositor diagnosed 12,166 cases of drug-induced SLE recorded between 1968 and 2017. Among the 118 agents causing SLE, five main classes were most often associated with drug-induced SLE. These drugs were antiarrhythmic agents such as procainamide or quinidine; antihypertensive agents such as hydralazine, captopril, or acebutolol; antimicrobial agents such as minocycline, isoniazid, carbamazepine, or phenytoin; and agents that inhibit the inflammation-inducing actions of interferon or tumor necrosis factor.[79]

### Non-systemic forms of lupus

[edit]

Discoid (cutaneous) lupus is limited to skin symptoms and is diagnosed by biopsy of rash on the face, neck, scalp or arms. Approximately 5% of people with DLE progress to SLE.[80]

## Pathophysiology

[edit]

SLE is triggered by environmental factors that are unknown. In SLE, the body's immune system produces antibodies against self-protein, particularly against proteins in the cell nucleus. These antibody attacks are the immediate cause of SLE.[13][81][82]

SLE is a chronic inflammatory disease believed to be a type III hypersensitivity response with potential type II involvement.[83] Reticulate and stellate acral pigmentation should be considered a possible manifestation of SLE and high titers of anti-cardiolipin antibodies, or a consequence of therapy.[84]

People with SLE have intense polyclonal B-cell activation, with a population shift towards immature B cells. Memory B cells with increased CD27+/IgD—are less susceptible to immunosuppression. CD27-/IgD- memory B cells are associated with increased disease activity and renal lupus. T cells, which regulate B-cell responses and infiltrate target tissues, have defects in signaling, adhesion, co-stimulation, gene transcription, and alternative splicing. The cytokines B-lymphocyte stimulator (BLyS), also known as B-cell activating factor (BAFF), interleukin 6, interleukin 17, interleukin 18, type I interferons, and tumor necrosis factor α (TNFα) are involved in the inflammatory process and are potential therapeutic targets.[5][85][86]

SLE is associated with low C3 levels in the complement system.[87]

### Cell death signaling

[edit]

* Apoptosis is increased in monocytes and keratinocytes
* Expression of Fas by B cells and T cells is increased
* There are correlations between the apoptotic rates of lymphocytes and disease activity.
* Necrosis is increased in T lymphocytes.

Tingible body macrophages (TBMs) – large phagocytic cells in the germinal centers of secondary lymph nodes – express CD68 protein. These cells normally engulf B cells that have undergone apoptosis after somatic hypermutation. In some people with SLE, significantly fewer TBMs can be found, and these cells rarely contain material from apoptotic B cells. Also, uningested apoptotic nuclei can be found outside of TBMs. This material may present a threat to the tolerization of B cells and T cells. Dendritic cells in the germinal center may endocytose such antigenic material and present it to T cells, activating them. Also, apoptotic chromatin and nuclei may attach to the surfaces of follicular dendritic cells and make this material available for activating other B cells that may have randomly acquired self-protein specificity through somatic hypermutation.[88] Necrosis, a pro-inflammatory form of cell death, is increased in T lymphocytes, due to mitochondrial dysfunction, oxidative stress, and depletion of ATP.[89]

### Clearance deficiency

[edit]

Clearance deficiency

Impaired clearance of dying cells is a potential pathway for the development of this systemic autoimmune disease. This includes deficient phagocytic activity, impaired lysosomal degradation, and scant serum components in addition to increased apoptosis.[90]

SLE is associated with defects in apoptotic clearance, and the damaging effects caused by apoptotic debris. Early apoptotic cells express "eat-me" signals, of cell-surface proteins such as phosphatidylserine, that prompt immune cells to engulf them. Apoptotic cells also express find-me signals to attract macrophages and dendritic cells. When apoptotic material is not removed correctly by phagocytes, they are captured instead by antigen-presenting cells, which leads to the development of antinuclear antibodies.[5]

Monocytes isolated from whole blood of people with SLE show reduced expression of CD44 surface molecules involved in the uptake of apoptotic cells. Most of the monocytes and tingible body macrophages (TBMs), which are found in the germinal centres of lymph nodes, even show a definitely different morphology; they are smaller or scarce and die earlier. Serum components like complement factors, CRP, and some glycoproteins are, furthermore, decisively important for an efficiently operating phagocytosis. With SLE, these components are often missing, diminished, or inefficient.[90]

Macrophages during SLE fail to mature their lysosomes and as a result have impaired degradation of internalized apoptotic debris, which results in chronic activation of Toll-like receptors and permeabilization of the phagolysosomal membrane, allowing activation of cytosolic sensors. In addition, intact apoptotic debris recycles back to the cell membrane and accumulate on the surface of the cell.[91][92]

Recent research has found an association between certain people with lupus (especially those with lupus nephritis) and an impairment in degrading neutrophil extracellular traps (NETs). These were due to DNAse1 inhibiting factors, or NET protecting factors in people's serum, rather than abnormalities in the DNAse1 itself.[93] DNAse1 mutations in lupus have so far only been found in some Japanese cohorts.[94]

The clearance of early apoptotic cells is an important function in multicellular organisms. It leads to a progression of the apoptosis process and finally to secondary necrosis of the cells if this ability is disturbed. Necrotic cells release nuclear fragments as potential autoantigens, as well as internal danger signals, inducing maturation of dendritic cells (DCs) since they have lost their membranes' integrity. Increased appearance of apoptotic cells also stimulates inefficient clearance. That leads to the maturation of DCs and also to the presentation of intracellular antigens of late apoptotic or secondary necrotic cells, via MHC molecules.[95]

Autoimmunity possibly results from the extended exposure to nuclear and intracellular autoantigens derived from late apoptotic and secondary necrotic cells. B and T cell tolerance for apoptotic cells is abrogated, and the lymphocytes get activated by these autoantigens; inflammation and the production of autoantibodies by plasma cells is initiated. A clearance deficiency in the skin for apoptotic cells has also been observed in people with cutaneous lupus erythematosus (CLE).[95]

### Germinal centers

[edit]

Germinal centres in a person with SLE and controls (schematic). Red: CD68 in tingible body macrophages; black: TUNEL positive apoptotic cells. 1) Healthy donors with florid germinal centres show giant tingible body macrophages (TBM) containing ingested apoptotic cells and no uningested apoptotic cells outside the TBM. 2) People with follicular lymphoma show small tingible body macrophages (TBM) containing few ingested apoptotic cells however, there are no uningested apoptotic cells outside the TBM. 3) Some with SLE (1) show a lack of TBM and many uningested apoptotic cells decorating the surfaces of spindle-shaped cells, presumably follicular dendritic cells (SLE 1). 4) Some people with SLE show TBM containing few ingested apoptotic cells and many uningested apoptotic cells outside the TBM (SLE 2). However, about 50% of people with SLE show rather normal germinal centre.

In healthy conditions, apoptotic lymphocytes are removed in germinal centers (GC) by specialized phagocytes, the tingible body macrophages (TBM), which is why no free apoptotic and potential autoantigenic material can be seen. In some people with SLE, a buildup of apoptotic debris can be observed in GC because of an ineffective clearance of apoptotic cells. Close to TBM, follicular dendritic cells (FDC) are localised in GC, which attach antigen material to their surface and, in contrast to bone marrow-derived DC, neither take it up nor present it via MHC molecules.[96]

Autoreactive B cells can accidentally emerge during somatic hypermutation and migrate into the germinal center light zone. Autoreactive B cells, maturated coincidentally, normally do not receive survival signals by antigen planted on follicular dendritic cells and perish by apoptosis. In the case of clearance deficiency, apoptotic nuclear debris accumulates in the light zone of GC and gets attached to FDC.[96]

This serves as a germinal centre survival signal for autoreactive B-cells. After migration into the mantle zone, autoreactive B cells require further survival signals from autoreactive helper T cells, which promote the maturation of autoantibody-producing plasma cells and B memory cells. In the presence of autoreactive T cells, a chronic autoimmune disease may be the consequence.[96][97]

### Anti-nRNP autoimmunity

[edit]

Anti-nRNP autoantibodies to nRNP A and nRNP C initially targeted restricted, proline-rich motifs. Antibody binding subsequently spread to other epitopes. The similarity and cross-reactivity between the initial targets of nRNP and Sm autoantibodies identifies a likely commonality in cause and a focal point for intermolecular epitope spreading.[98]

### Others

[edit]

Elevated expression of HMGB1 was found in the sera of people and mice with systemic lupus erythematosus, high mobility group box 1 (HMGB1) is a nuclear protein participating in chromatin architecture and transcriptional regulation. Recently, there is increasing evidence HMGB1 contributes to the pathogenesis of chronic inflammatory and autoimmune diseases due to its inflammatory and immune stimulating properties.[99]

## Diagnosis

[edit]

Micrograph showing vacuolar interface dermatitis, as may be seen in SLE. H&E stain. Micrograph of a section of human skin prepared for direct immunofluorescence using an anti-IgG antibody. The skin is from a person with systemic lupus erythematosus and shows IgG deposits at two different places. The first is a bandlike deposit along the epidermal basement membrane ("lupus band test" is positive); the second is within the nuclei of the epidermal cells (antinuclear antibodies are present).

### Laboratory tests

[edit]

Antinuclear antibody (ANA) testing and anti-extractable nuclear antigen (anti-ENA) form the mainstay of serologic testing for SLE. ANA testing for lupus is highly sensitive, with the vast majority of individuals with Lupus testing positive; but the test is not specific, as a positive result may or may not be indicative of Lupus.[100]

Several techniques are used to detect ANAs. The most widely used is indirect immunofluorescence (IF). The pattern of fluorescence suggests the type of antibody present in the people's serum. Direct immunofluorescence can detect deposits of immunoglobulins and complement proteins in people's skin. When skin not exposed to the sun is tested, a positive direct IF (the so-called lupus band test) is evidence of systemic lupus erythematosus.[101]

ANA screening yields positive results in many connective tissue disorders and other autoimmune diseases, and may occur in normal individuals. Subtypes of antinuclear antibodies include anti-Smith and anti-double stranded DNA (anti-dsDNA) antibodies (which are linked to SLE) and anti-histone antibodies (which are linked to drug-induced lupus). Anti-dsDNA antibodies are highly specific for SLE; they are present in 70% of cases, whereas they appear in only 0.5% of people without SLE.[13]

Laboratory tests can also help distinguish between closely related connective tissue diseases. A multianalyte panel (MAP) of autoantibodies, including ANA, anti-dsDNA, and anti-Smith in combination with the measurement of cell-bound complement activation products (CB-CAPs) with an integrated algorithm has demonstrated 80% diagnostic sensitivity and 86% specificity in differentiating diagnosed SLE from other autoimmune connective tissue diseases.[102] The MAP approach has been further studied in over 40,000 patients tested with either the MAP or traditional ANA testing strategy (tANA), demonstrating patients who test MAP positive are at up to 6-fold increased odds of receiving a new SLE diagnosis and up to 3-fold increased odds of starting a new SLE medication regimen as compared to patients testing positive with the tANA approach.[103]

The anti-dsDNA antibody titers also tend to reflect disease activity, although not in all cases.[13] Other ANA that may occur in people with SLE are anti-U1 RNP (which also appears in systemic sclerosis and mixed connective tissue disease), SS-A (or anti-Ro) and SS-B (or anti-La; both of which are more common in Sjögren's syndrome). SS-A and SS-B confer a specific risk for heart conduction block in neonatal lupus.[104]

Other tests routinely performed in suspected SLE are complement system levels (low levels suggest consumption by the immune system), electrolytes and kidney function (disturbed if the kidney is involved), liver enzymes, and complete blood count.[105]

The lupus erythematosus (LE) cell test was commonly used for diagnosis, but it is no longer used because the LE cells are only found in 50–75% of SLE cases and they are also found in some people with rheumatoid arthritis, scleroderma, and drug sensitivities. Because of this, the LE cell test is now performed only rarely and is mostly of historical significance.[106]

### Diagnostic criteria

[edit]

Some physicians make a diagnosis based on the American College of Rheumatology (ACR) classification criteria. However, these criteria were primarily established for use in scientific research, including selection for randomized controlled trials, which require higher confidence levels. As a result, many people with SLE may not meet the full ACR criteria.[107]

#### Criteria

[edit]

The American College of Rheumatology (ACR) established eleven criteria in 1982,[108] which were revised in 1997[109] as a classificatory instrument to operationalise the definition of SLE in clinical trials. They were not intended to be used to diagnose individuals and do not do well in that capacity. For the purpose of identifying people for clinical studies, a person has SLE if any 4 out of 11 symptoms are present simultaneously or serially on two separate occasions.

1. Malar rash (rash on cheeks); sensitivity = 57%; specificity = 96%.[110]
2. Discoid rash (red, scaly patches on skin that cause scarring); sensitivity = 18%; specificity = 99%.[110]
3. Serositis: Pleurisy (inflammation of the membrane around the lungs) or pericarditis (inflammation of the membrane around the heart); sensitivity = 56%; specificity = 86% (pleural is more sensitive; cardiac is more specific).[110]
4. Oral ulcers (includes oral or nasopharyngeal ulcers); sensitivity = 27%; specificity = 96%.[110]
5. Arthritis: nonerosive arthritis of two or more peripheral joints, with tenderness, swelling, or effusion; sensitivity = 86%; specificity = 37%.[110]
6. Photosensitivity (exposure to ultraviolet light causes rash, or other symptoms of SLE flareups); sensitivity = 43%; specificity = 96%.[110]
7. Blood—hematologic disorder—hemolytic anemia (low red blood cell count), leukopenia (white blood cell count<4000/μL), lymphopenia (<1500/μL), or low platelet count (<100000/μL) in the absence of offending drug; sensitivity = 59%; specificity = 89%.[110] Hypocomplementemia is also seen, due to either consumption of C3[111] and C4 by immune complex-induced inflammation or to congenitally complement deficiency, which may predispose to SLE.
8. Renal disorder: More than 0.5 g per day protein in urine or cellular casts seen in urine under a microscope; sensitivity = 51%; specificity = 94%.[110]
9. Antinuclear antibody test positive; sensitivity = 99%; specificity = 49%.[110]
10. Immunologic disorder: Positive anti-Smith, anti-ds DNA, antiphospholipid antibody, or false positive serological test for syphilis; sensitivity = 85%; specificity = 93%.[110] Presence of anti-ss DNA in 70% of cases (though also positive with rheumatic disease and healthy persons).[112]
11. Neurologic disorder: Seizures or psychosis; sensitivity = 20%; specificity = 98%.[110]

Other than the ACR criteria, people with lupus may also have:[113]

* Fever (over 100 °F/ 37.7 °C)
* Extreme fatigue
* Hair loss
* Fingers turning white or blue when cold (Raynaud syndrome)

#### Criteria for individual diagnosis

[edit]

Some people, especially those with antiphospholipid syndrome, may have SLE without four of the above criteria, and also SLE may present with features other than those listed in the criteria.[114][115][116]

Recursive partitioning has been used to identify more parsimonious criteria.[110] This analysis presented two diagnostic classification trees:

1. Simplest classification tree: SLE is diagnosed if a person has an immunologic disorder (anti-DNA antibody, anti-Smith antibody, false positive syphilis test, or LE cells) or malar rash. It has sensitivity = 92% and specificity = 92%.
2. Full classification tree: Uses six criteria. It has sensitivity = 97% and specificity = 95%.

Other alternative criteria have been suggested, e.g. the St. Thomas' Hospital "alternative" criteria in 1998.[117]

## Treatment

[edit]

There is no cure for Lupus. The treatment of SLE involves preventing flares and reducing their severity and duration when they occur.[118]

Hydroxychloroquine was approved by the FDA for lupus in 1955.[119] Hydroxychloroquine is a first line agent for SLE and is associated with reduced mortality, complications and disease activity. Hydroxychloroquiine is associated with a 54% reduction in mortality due to SLE.[120][121] It is recommended that all people with SLE be on hydroxychloroquine regardless of disease activity due to its well documented benefits, unless there are contraindications to its use.[121] Contraindications to hydroxychloroquine include allergy to the medication or significant retinal disease (as hydroxychloroquine may worsen retinopathy). Regular eye exams are recommended for those on hydroxychloroquine chronically due to this rare risk.[121] The prevalence of retinal toxicity for those on the medication was 2% at 10 years.[121]

Treatment can include corticosteroids and anti-malarial drugs. Certain types of lupus nephritis such as diffuse proliferative glomerulonephritis require intermittent cytotoxic drugs. These drugs include cyclophosphamide and mycophenolate. Cyclophosphamide increases the risk of developing infections, pancreas problems, high blood sugar, and high blood pressure.[122]

Some drugs approved for other diseases are used for SLE 'off-label'. In November 2010, an FDA advisory panel recommended approving belimumab (Benlysta) as a treatment for the pain and flare-ups common in lupus. The drug was approved by the FDA in March 2011.[123][124]

In terms of healthcare utilization and costs, one study found that "patients from the US with SLE, especially individuals with moderate or severe disease, utilize significant healthcare resources and incur high medical costs."[125]

### Medications

[edit]

Due to the variety of symptoms and organ system involvement with SLE, its severity in an individual must be assessed to successfully treat SLE. Mild or remittent disease may, sometimes, be safely left untreated. If required, nonsteroidal anti-inflammatory drugs and antimalarials may be used. Medications such as prednisone, mycophenolic acid and tacrolimus have been used in the past.[126]

#### Disease-modifying antirheumatic drugs

[edit]

Disease-modifying antirheumatic drugs (DMARDs) are used preventively to reduce the incidence of flares, the progress of the disease, and the need for steroid use; when flares occur, they are treated with corticosteroids. DMARDs commonly in use are antimalarials such as hydroxychloroquine and immunosuppressants (e.g. methotrexate and azathioprine). Hydroxychloroquine is an FDA-approved antimalarial used for constitutional, cutaneous, and articular manifestations. Hydroxychloroquine has relatively few side effects, and there is evidence that it improves survival among people who have SLE.[119] Cyclophosphamide is used for severe glomerulonephritis or other organ-damaging complications. Mycophenolic acid is also used for the treatment of lupus nephritis, but it is not FDA-approved for this indication, and FDA is investigating reports that it may be associated with birth defects when used by pregnant women.[127] A study involving more than 1,000 people with lupus found that people have a similar risk of serious infection with azathioprine and mycophenolic acid as with newer biological therapies (rituximab and belimumab).[128][129]

#### Immunosuppressive drugs

[edit]

In more severe cases, medications that modulate the immune system (primarily corticosteroids and immunosuppressants) are used to control the disease and prevent recurrence of symptoms (known as flares). Depending on the dosage, people who require steroids may develop Cushing's syndrome, symptoms of which may include obesity, puffy round face, diabetes mellitus, increased appetite, difficulty sleeping, and osteoporosis. These may subside if and when the large initial dosage is reduced, but long-term use of even low doses can cause elevated blood pressure and cataracts.[130]

Numerous new immunosuppressive drugs are being actively tested for SLE. Rather than broadly suppressing the immune system, as corticosteroids do, they target the responses of specific types of immune cells. Some of these drugs are already FDA-approved for treatment of rheumatoid arthritis, however due to high-toxicity, their use remains limited.[119][131]

#### Analgesia

[edit]

Since a large percentage of people with SLE have varying amounts of chronic pain, stronger prescription analgesics (painkillers) may be used if over-the-counter drugs (mainly nonsteroidal anti-inflammatory drugs) do not provide effective relief. Potent NSAIDs such as indomethacin and diclofenac are relatively contraindicated for people with SLE because they increase the risk of kidney failure and heart failure.[119]

Pain is typically treated with opioids, varying in potency based on the severity of symptoms. When opioids are used for prolonged periods, drug tolerance, chemical dependency, and addiction may occur. Opiate addiction is not typically a concern since the condition is not likely to ever completely disappear. Thus, lifelong treatment with opioids is fairly common for chronic pain symptoms, accompanied by periodic titration that is typical of any long-term opioid regimen.[132]

#### Intravenous immunoglobulins (IVIGs)

[edit]

Intravenous immunoglobulins may be used to control SLE with organ involvement, or vasculitis. It is believed that they reduce antibody production or promote the clearance of immune complexes from the body, even though their mechanism of action is not well understood.[133] Unlike immunosuppressives and corticosteroids, IVIGs do not suppress the immune system, so there is less risk of serious infections with these drugs.[134]

### Lifestyle changes

[edit]

Avoiding sunlight in SLE is critical since ultraviolet radiation is known to exacerbate skin manifestations of the disease.[135] Avoiding activities that induce fatigue is also important since those with SLE fatigue easily and it can be debilitating. These two problems can lead to people becoming housebound for long periods of time. Physical exercise has been shown to help improve fatigue in adult with SLE.[135] Drugs unrelated to SLE should be prescribed only when known not to exacerbate the disease. Occupational exposure to silica, pesticides, and mercury can also worsen the disease.[85] Recommendations for evidence based non-pharmacological interventions in the management of SLE have been developed by an international task force of clinicians and patients with SLE.[135]

### Kidney transplantation

[edit]

Kidney transplants are the treatment of choice for end-stage kidney disease, which is one of the complications of lupus nephritis, but the recurrence of the full disease is common in up to 30% of people.[136]

### Antiphospholipid syndrome

[edit]

Approximately 20% of people with SLE have clinically significant levels of antiphospholipid antibodies, which are associated with antiphospholipid syndrome.[137] Antiphospholipid syndrome is also related to the onset of neural lupus symptoms in the brain. In this form of the disease, the cause is very different from lupus: thromboses (blood clots or "sticky blood") form in blood vessels, which prove to be fatal if they move within the bloodstream.[114] If the thromboses migrate to the brain, they can potentially cause a stroke by blocking the blood supply to the brain.

If this disorder is suspected in people, brain scans are usually required for early detection. These scans can show localized areas of the brain where blood supply has not been adequate. The treatment plan for these people requires anticoagulation. Often, low-dose aspirin is prescribed for this purpose, although for cases involving thrombosis anticoagulants such as warfarin are used.[138]

### Management of pregnancy

[edit]

Further information: Systemic lupus erythematosus and pregnancy

While most infants born to mothers who have SLE are healthy, pregnant mothers with SLE should remain under medical care until delivery. However, SLE in the pregnant mother poses a higher risk of neonatal lupus, intrauterine growth restriction, preterm membrane rupture, preterm birth, and miscarriage.[139] Neonatal lupus is rare, but identification of mothers at the highest risk for complications allows for prompt treatment before or after birth. In addition, SLE can flare up during pregnancy, and proper treatment can maintain the health of the mother longer. Women pregnant and known to have anti-Ro (SSA) or anti-La antibodies (SSB) often have echocardiograms during the 16th and 30th weeks of pregnancy to monitor the health of the heart and surrounding vasculature.[140]

Contraception and other reliable forms of pregnancy prevention are routinely advised for women with SLE since getting pregnant during active disease was found to be harmful.[141] Lupus nephritis, gestational diabetes, and pre-eclampsia are common manifestations.[139]

## Prognosis

[edit]

No cure is available for SLE but there are many treatments for the disease.[1]

In the 1950s, most people diagnosed with SLE lived fewer than five years. Today, over 90% now survive for more than ten years, and many live relatively symptom-free. 80–90% can expect to live a normal lifespan.[142] Mortality rates are however elevated compared to people without SLE.[143]

Prognosis is typically worse for men and children than for women; however, if symptoms are present after age 60, the disease tends to run a more benign course. Early mortality, within five years, is due to organ failure or overwhelming infections, both of which can be altered by early diagnosis and treatment. The mortality risk is fivefold when compared to the normal population in the late stages, which can be attributed to cardiovascular disease from accelerated atherosclerosis, the leading cause of death for people with SLE.[119] To reduce the potential for cardiovascular issues, high blood pressure and high cholesterol should be prevented or treated aggressively. Steroids should be used at the lowest dose for the shortest possible period, and other drugs that can reduce symptoms should be used whenever possible.[119]

## Epidemiology

[edit]

The global rates of SLE are approximately 20–70 per 100,000 people. In females, the rate is highest between 45 and 64 years of age. The lowest overall rate exists in Iceland and Japan. The highest rates exist in the US and France. However, there is not sufficient evidence to conclude why SLE is less common in some countries compared to others; it could be the environmental variability in these countries. For example, different countries receive different levels of sunlight, and exposure to UV rays affects dermatological symptoms of SLE.[2]

Certain studies hypothesize that a genetic connection exists between race and lupus which affects disease prevalence. If this is true, the racial composition of countries affects disease and will cause the incidence in a country to change as the racial makeup changes. To understand if this is true, countries with largely homogenous and racially stable populations should be studied to better understand incidence.[2] Rates of disease in the developing world are unclear.[9]

The rate of SLE varies between countries, ethnicity, and sex, and changes over time.[138] In the United States, one estimate of the rate of SLE is 53 per 100,000;[138] another estimate places the total affected population at 322,000 to over 1 million (98 to over 305 per 100,000).[144] In Northern Europe the rate is about 40 per 100,000 people.[13] SLE occurs more frequently and with greater severity among those of non-European descent.[144] That rate has been found to be as high as 159 per 100,000 among those of Afro-Caribbean descent.[138] Childhood-onset systemic lupus erythematosus generally presents between the ages of 3 and 15 and is four times more common in girls.[145]

While the onset and persistence of SLE can show disparities between genders, socioeconomic status also plays a major role. Women with SLE and of lower socioeconomic status have been shown to have higher depression scores, higher body mass index, and more restricted access to medical care than women of higher socioeconomic statuses with the illness. People with SLE had more self-reported anxiety and depression scores if they were from a lower socioeconomic status.[146]

### Race

[edit]

There are assertions that race affects the rate of SLE. However, a 2010 review of studies that correlate race and SLE identified several sources of systematic and methodological error, indicating that the connection between race and SLE may be spurious.[147] For example, studies show that social support is a modulating factor which buffers against SLE-related damage and maintains physiological functionality.[147] Studies have not been conducted to determine whether people of different racial backgrounds receive differing levels of social support.[147] If there is a difference, this could act as a confounding variable in studies correlating race and SLE.

Another caveat to note when examining studies about SLE is that symptoms are often self-reported. This process introduces additional sources of methodological error. Studies have shown that self-reported data is affected by more than just the patient's experience with the disease- social support, the level of helplessness, and abnormal illness-related behaviors also factor into a self-assessment. Additionally, other factors like the degree of social support that a person receives, socioeconomic status, health insurance, and access to care can contribute to an individual's disease progression.[147][148]

Racial differences in lupus progression have not been found in studies that control for the socioeconomic status [SES] of participants.[147][149] Studies that control for the SES of its participants have found that non-white people have more abrupt disease onset compared to white people and that their disease progresses more quickly. Non-white patients often report more hematological, serosal, neurological, and renal symptoms. However, the severity of symptoms and mortality are both similar in white and non-white patients. Studies that report different rates of disease progression in late-stage SLE are most likely reflecting differences in socioeconomic status and the corresponding access to care.[147] The people who receive medical care have often accrued less disease-related damage and are less likely to be below the poverty line.[149] Additional studies have found that education, marital status, occupation, and income create a social context that affects disease progression.[147]

### Sex

[edit]

SLE, like many autoimmune diseases, affects females more frequently than males, at a rate of about 9 to 1.[8][138]

Hormonal mechanisms could explain the increased incidence of SLE in females. The onset of SLE could be attributed to the elevated hydroxylation of estrogen and the abnormally decreased levels of androgens in females. In addition, differences in GnRH signalling have also been shown to contribute to the onset of SLE. While females are more likely to relapse than males, the intensity of these relapses is the same for both sexes.[16]

In addition to hormonal mechanisms, specific genetic influences found on the X chromosome may also contribute to the development of SLE. The X chromosome carries immunologic genes like CD40L, which can mutate or simply escape silencing by X-chromosome inactivation and contribute to the onset of SLE.[150][151] A study has shown an association between Klinefelter syndrome and SLE. XXY males with SLE have an abnormal X–Y translocation resulting in the partial triplication of the PAR1 gene region.[152] Research has also implicated XIST, which encodes a long non-coding RNA that coats the inactive member of the pair of X chromosomes in females as part of a ribonucleoprotein complex, as a source of autoimmunity.[153]

### Changing rate of disease

[edit]

The rate of SLE in the United States increased from 1.0 in 1955 to 7.6 in 1974. Whether the increase is due to better diagnosis or an increased frequency of the disease is unknown.[138]

## History

[edit]

A historical drawing of lupus erythematosus as it was once considered as a non-fatal disfiguring skin disease[154]

The history of SLE can be divided into three periods: classical, neoclassical, and modern. In each period, research and documentation advanced the understanding and diagnosis of SLE, leading to its classification as an autoimmune disease in 1851, and to the various diagnostic options and treatments now available to people with SLE. The advances made by medical science in the diagnosis and treatment of SLE have dramatically improved the life expectancy of a person diagnosed with SLE.[155]

### Etymology

[edit]

There are several explanations ventured for the term lupus erythematosus. Lupus is Latin for "wolf",[156][10] and in Medieval Latin was also used to refer to a disease of the skin,[157] and "erythematosus" is derived from ἐρύθημα, Ancient Greek for "redness of the skin". All explanations originate with the reddish, butterfly-shaped malar rash that the disease classically exhibits across the nose and cheeks. The reason the term lupus was used to describe this disease comes from the mid-19th century. Many diseases that caused ulceration or necrosis were given the term "lupus" due to the wound being reminiscent of a wolf's bite. This is similar to the naming of lupus vulgaris or chronic facial tuberculosis, where the lesions are ragged and punched out and are said to resemble the bite of a wolf.[158]

### Classical period

[edit]

The classical period began when the disease was first recognized in the Middle Ages. The term lupus is attributed to 12th-century Italian physician Rogerius Frugard, who used it to describe ulcerating sores on the legs of people.[159] No formal treatment for the disease existed and the resources available to physicians to help people were limited.[160]

### Neoclassical period

[edit]

The neoclassical period began in 1851 when the skin disease which is now known as discoid lupus was documented by the French physician, Pierre Cazenave. Cazenave termed the illness lupus and added the word erythematosus to distinguish this disease from other illnesses that affected the skin except they were infectious.[161] Cazenave observed the disease in several people and made very detailed notes to assist others in its diagnosis. He was one of the first to document that lupus affected adults from adolescence into the early thirties and that facial rash is its most distinguishing feature.[162]

Research and documentation of the disease continued in the neoclassical period with the work of Ferdinand von Hebra and his son-in-law, Moritz Kaposi. They documented the physical effects of lupus as well as some insights into the possibility that the disease caused internal trauma. Von Hebra observed that lupus symptoms could last many years and that the disease could go "dormant" after years of aggressive activity and then re-appear with symptoms following the same general pattern. These observations led Hebra to term lupus a chronic disease in 1872.[163]

Kaposi observed that lupus assumed two forms: the skin lesions (now known as discoid lupus) and a more aggravated form that affected not only the skin but also caused fever, arthritis, and other systemic disorders in people.[164] The latter also presented a rash confined to the face, appearing on the cheeks and across the bridge of the nose; he called this the "butterfly rash". Kaposi also observed those patients who developed the butterfly rash were often afflicted with another disease such as tuberculosis, anemia, or chlorisis which often caused death.[162] Kaposi was one of the first people to recognize what is now termed systemic lupus erythematosus in his documentation of the remitting and relapsing nature of the disease and the relationship of skin and systemic manifestations during disease activity.[165]

The 19th century's research into lupus continued with the work of Sir William Osler who, in 1895, published the first of his three papers about the internal complications of erythema exudativum multiforme. Not all the patient cases in his paper had SLE but Osler's work expanded the knowledge of systemic diseases and documented extensive and critical visceral complications for several diseases including lupus.[162] Noting that many people with lupus had a disease that not only affected the skin but many other organs in the body as well, Osler added the word "systemic" to the term lupus erythematosus to distinguish this type of disease from discoid lupus erythematosus.[166]

Osler's second paper noted that reoccurrence is a special feature of the disease and that attacks can be sustained for months or even years. Further study of the disease led to a third paper, published in 1903, documenting afflictions such as arthritis, pneumonia, the inability to form coherent ideas, delirium, and central nervous system damage as all affecting patients diagnosed with SLE.[162]

### Modern period

[edit]

The modern period, beginning in 1920, saw major developments in research into the cause and treatment of discoid and systemic lupus. Research conducted in the 1920s and 1930s led to the first detailed pathologic descriptions of lupus and demonstrated how the disease affected the kidney, heart, and lung tissue.[167] A breakthrough was made in 1948 with the discovery of the LE cell (the lupus erythematosus cell—a misnomer, as it occurs with other diseases as well). Discovered by a team of researchers at the Mayo Clinic, they discovered that the white blood cells contained the nucleus of another cell that was pushing against the white cell's proper nucleus.[168]

Noting that the invading nucleus was coated with antibody that allowed it to be ingested by a phagocytic or scavenger cell, they named the antibody that causes one cell to ingest another the LE factor and the two nuclei cell result in the LE cell.[169] The LE cell, it was determined, was a part of an anti-nuclear antibody (ANA) reaction; the body produces antibodies against its own tissue. This discovery led to one of the first definitive tests for lupus since LE cells are found in approximately 60% of all people diagnosed with lupus.[170] The LE cell test is rarely performed as a definitive lupus test today as LE cells do not always occur in people with SLE and can occur in individuals with other autoimmune diseases. Their presence can help establish a diagnosis but no longer indicates a definitive SLE diagnosis.

The discovery of the LE cell led to further research and this resulted in more definitive tests for lupus. Building on the knowledge that those with SLE had auto-antibodies that would attach themselves to the nuclei of normal cells, causing the immune system to send white blood cells to fight off these "invaders", a test was developed to look for the anti-nuclear antibody (ANA) rather than the LE cell specifically. This ANA test was easier to perform and led not only to a definitive diagnosis of lupus but also many other related diseases. This discovery led to the understanding of what is now known as autoimmune diseases.[171]

To ensure that the person has lupus and not another autoimmune disease, the American College of Rheumatology (ACR) established a list of clinical and immunologic criteria that, in any combination, point to SLE. The criteria include symptoms that the person can identify (e.g. pain) and things that a physician can detect in a physical examination and through laboratory test results. The list was originally compiled in 1971, initially revised in 1982, and further revised and improved in 2009.[172]

Medical historians have theorized that people with porphyria (a disease that shares many symptoms with SLE) generated folklore stories of vampires and werewolves, due to the photosensitivity, scarring, hair growth, and porphyrin brownish-red stained teeth in severe recessive forms of porphyria (or combinations of the disorder, known as dual, homozygous, or compound heterozygous porphyrias).[173]

Useful medication for the disease was first found in 1894 when quinine was first reported as an effective therapy. Four years later, the use of salicylates in conjunction with quinine was noted to be of still greater benefit. This was the best available treatment until the middle of the twentieth century when Hench discovered the efficacy of corticosteroids in the treatment of SLE.[173]

## Research

[edit]

A study called BLISS-76 tested the drug belimumab, a fully human monoclonal anti-BAFF (or anti-BLyS) antibody.[124] BAFF stimulates and extends the life of B lymphocytes, which produce antibodies against foreign and self-protein.[174] It was approved by the FDA in March 2011.[123] Genetically engineered immune cells are also being studied in animal models of the disease as of 2019.[175]

In September 2022, researchers at the University of Erlangen-Nuremberg published promising results using genetically altered immune cells to treat severely ill patients. Four women and one man received transfusions of CAR T cells modified to attack their B cells, eliminating the aberrant ones. The therapy drove the disease into remission in all five patients, who have been off lupus medication for several months after the treatment ended.[176][177]

## Famous cases

[edit]

Main article: List of people with lupus

* Shannon Boxx, U.S. Olympic team soccer player[178]
* Nick Cannon, American television host, actor, rapper, and comedian[179]
* Pumpuang Duangjan, Thai Luk Thung singer[180] many Thai people know this disease as "Phumpuang disease" because she died from the disease.[181]
* Selena Gomez, singer, actress, producer, and businesswoman[182]
* Sally Hawkins, actress[183]
* Flannery O'Connor, Southern Gothic novelist and short-story author[184]
* Michael Jackson, American singer, songwriter, dancer and philanthropist[185]
* Seal, British singer[186]
* Toni Braxton, American singer, songwriter, actress and television personality[187]

## See also

[edit]

* Childhood-onset systemic lupus erythematosus

* Medicine portal
* Biology portal

* Canine discoid lupus erythematosus in dogs
* List of people with lupus

## References

[edit]

1. ^ a b c d e f g h i j k l m n o p q r s t u v "Handout on Health: Systemic Lupus Erythematosus". www.niams.nih.gov. February 2015. Archived from the original on 17 June 2016. Retrieved 12 June 2016.
2. ^ a b c d e f g Danchenko N, Satia JA, Anthony MS (2006). "Epidemiology of systemic lupus erythematosus: a comparison of worldwide disease burden". Lupus. 15 (5): 308–318\. doi:10.1191/0961203306lu2305xx. PMID 16761508. S2CID 6465663.
3. ^ The Cleveland Clinic Intensive Review of Internal Medicine (5 ed.). Lippincott Williams & Wilkins. 2012. p. 969\. ISBN 978-1-4511-5330-9. Retrieved 13 June 2016.
4. ^ a b Sura A, Failing C, Co DO, Syverson G (June 2024). "Childhood-Onset Systemic Lupus Erythematosus". Pediatrics in Review. 45 (6): 316–328\. doi:10.1542/pir.2023-006011. PMID 38821900.
5. ^ a b c d e f g Lisnevskaia L, Murphy G, Isenberg D (November 2014). "Systemic lupus erythematosus". The Lancet. 384 (9957): 1878–1888\. CiteSeerX 10.1.1.1008.5428. doi:10.1016/s0140-6736(14)60128-8. PMID 24881804. S2CID 28905456.
6. ^ "Five lupus patients enter long-lasting remission after immunotherapy". New Atlas. 2022-09-15. Retrieved 2022-09-17.
7. ^ Davis LS, Reimold AM (April 2017). "Research and therapeutics-traditional and emerging therapies in systemic lupus erythematosus". Rheumatology. 56 (suppl_1): i100 – i113. doi:10.1093/rheumatology/kew417. PMC 5850311. PMID 28375452.
8. ^ a b c Murphy G, Isenberg D (December 2013). "Effect of gender on clinical presentation in systemic lupus erythematosus". Rheumatology. 52 (12): 2108–2115\. doi:10.1093/rheumatology/ket160. PMID 23641038.
9. ^ a b Tiffin N, Adeyemo A, Okpechi I (January 2013). "A diverse array of genetic factors contribute to the pathogenesis of systemic lupus erythematosus". Orphanet Journal of Rare Diseases. 8: 2. doi:10.1186/1750-1172-8-2. PMC 3551738. PMID 23289717.
10. ^ a b Chabner DE (2013). The Language of Medicine. Elsevier Health Sciences. p. 610\. ISBN 978-1-4557-2846-6.
11. ^ Shiel Jr WC (2009-01-30). Stöppler MC (ed.). "Systemic Lupus (cont.)". MedicineNet. Archived from the original on 2009-12-20.
12. ^ "Lupus, "The Great Imitator"". University Health Care. Archived from the original on January 15, 2009. Retrieved 2009-02-03.
13. ^ a b c d e f Rahman A, Isenberg DA (February 2008). "Systemic lupus erythematosus". The New England Journal of Medicine. 358 (9): 929–939\. CiteSeerX 10.1.1.1008.5428. doi:10.1056/NEJMra071297. PMID 18305268.
14. ^ "Lupus facts and statistics". www.lupus.org. Retrieved 2023-11-02.
15. ^ "Lupus: Symptoms — MayoClinic.com". Archived from the original on 2008-07-14. Retrieved 2008-07-14.
16. ^ a b Yacoub Wasef SZ (August 2004). "Gender differences in systemic lupus erythematosus". Gender Medicine. 1 (1): 12–17\. doi:10.1016/S1550-8579(04)80006-8. PMID 16115579.
17. ^ Tebbe B, Orfanos CE (1997). "Epidemiology and socioeconomic impact of skin disease in lupus erythematosus". Lupus. 6 (2): 96–104\. doi:10.1177/096120339700600204. PMID 9061657. S2CID 25969434.
18. ^ Harris JP, Weisman MH, eds. (2007). Head and neck manifestations of systemic disease. New York: Informa Healthcare. p. 6\. ISBN 978-1-4200-1756-4.
19. ^ Gladman D (10 September 2015). "Overview of the clinical manifestations of systemic lupus erythematosus in adults". UpToDate. Archived from the original on 19 April 2017. Retrieved 18 April 2017.
20. ^ a b Joint and Muscle Pain Archived 2007-11-09 at the Wayback Machine Lupus Foundation of America
21. ^ Hodkinson B, Musenge E, Tikly M (May 2009). "Osteoarticular tuberculosis in patients with systemic lupus erythematosus". QJM. 102 (5): 321–328\. doi:10.1093/qjmed/hcp015. PMID 19246552.
22. ^ Hemminki K, Li X, Sundquist J, Sundquist K (March 2009). "Familial associations of rheumatoid arthritis with autoimmune diseases and related conditions". Arthritis and Rheumatism. 60 (3): 661–668\. doi:10.1002/art.24328. PMID 19248111.
23. ^ Mendoza-Pinto C, García-Carrasco M, Sandoval-Cruz H, Muñoz-Guarneros M, Escárcega RO, Jiménez-Hernández M, et al. (May 2009). "Risk factors of vertebral fractures in women with systemic lupus erythematosus". Clinical Rheumatology. 28 (5): 579–585\. doi:10.1007/s10067-009-1105-3. PMID 19224131. S2CID 29786198.
24. ^ Lam SK, Quah TC (1990). "Anemia in systemic lupus erythematosus". The Journal of the Singapore Paediatric Society. 32 (3–4): 132–136\. PMID 2133750.3–4&rft.pages=132-136&rft.date=1990&rft_id=info:pmid/2133750&rft.aulast=Lam&rft.aufirst=SK&rft.au=Quah,+TC&rfr_id=info:sid/en.wikipedia.org:Lupus" class="Z3988">
25. ^ Giannouli S, Voulgarelis M, Ziakas PD, Tzioufas AG (February 2006). "Anaemia in systemic lupus erythematosus: from pathophysiology to clinical assessment". Annals of the Rheumatic Diseases. 65 (2): 144–148\. doi:10.1136/ard.2005.041673. PMC 1798007. PMID 16079164.
26. ^ Syuto T, Shimizu A, Takeuchi Y, Tanaka S, Hasegawa M, Nagai Y, et al. (July 2009). "Association of antiphosphatidylserine/prothrombin antibodies with neuropsychiatric systemic lupus erythematosus". Clinical Rheumatology. 28 (7): 841–845\. doi:10.1007/s10067-009-1123-1. PMID 19224124. S2CID 26215523.
27. ^ Koike T, Sueishi M, Tomioka H, Yoshida S (31 October 1983). "Anti-phospholipid antibodies and biological false positive serological test for syphilis in patients with systemic lupus erythematosus". Clin. Exp. Immunol. 56 (1): 193–199\. PMC 1535952. PMID 6201309.
28. ^ Hahn BH (December 2003). "Systemic lupus erythematosus and accelerated atherosclerosis". The New England Journal of Medicine. 349 (25): 2379–2380\. doi:10.1056/NEJMp038168. PMID 14681501.
29. ^ Frieri M, Stampfl H (January 2016). "Systemic lupus erythematosus and atherosclerosis: Review of the literature". Autoimmunity Reviews. 15 (1): 16–21\. doi:10.1016/j.autrev.2015.08.007. PMID 26299985.
30. ^ "Treating Lupus with Steroids". Johns Hopkins Lupus Center. Retrieved 1 December 2021.
31. ^ Henderson LA, Loring SH, Gill RR, Liao KP, Ishizawar R, Kim S, et al. (March 2013). "Shrinking lung syndrome as a manifestation of pleuritis: a new model based on pulmonary physiological studies". The Journal of Rheumatology. 40 (3): 273–281\. doi:10.3899/jrheum.121048. PMC 4112073. PMID 23378468.
32. ^ Calderaro DC, Ferreira GA (May 2012). "Presentation and prognosis of shrinking lung syndrome in systemic lupus erythematosus: report of four cases". Rheumatology International. 32 (5): 1391–1396\. doi:10.1007/s00296-011-1863-5. PMID 21431288. S2CID 1955534.
33. ^ Kamen DL, Strange C (September 2010). "Pulmonary Manifestations of Systemic Lupus Erythematosus". Clinics in Chest Medicine. 31 (3): 479–488\. doi:10.1016/j.ccm.2010.05.001. PMID 20692540 – via Elsevier Science Direct.
34. ^ Medlin JL, Hansen KE, McCoy SS, Bartels CM (October 2018). "Pulmonary manifestations in late versus early systemic lupus erythematosus: A systematic review and meta-analysis". Seminars in Arthritis and Rheumatism. 48 (2): 198–204\. doi:10.1016/j.semarthrit.2018.01.010. PMC 6067995. PMID 29550111.
35. ^ Singh JA, Hossain A, Kotb A, Oliveira A, Mudano AS, Grossman J, et al. (October 2016). "Treatments for Lupus Nephritis: A Systematic Review and Network Metaanalysis". The Journal of Rheumatology. 43 (10): 1801–1815\. doi:10.3899/jrheum.160041. PMID 27585688. S2CID 19621372.
36. ^ Somers EC, Marder W, Cagnoli P, Lewis EE, DeGuire P, Gordon C, et al. (February 2014). "Population-based incidence and prevalence of systemic lupus erythematosus: the Michigan Lupus Epidemiology and Surveillance program". Arthritis & Rheumatology. 66 (2): 369–378\. doi:10.1002/art.38238. hdl:2027.42/102724. PMC 4198147. PMID 24504809.
37. ^ Ward MM (November 2000). "Changes in the incidence of end-stage renal disease due to lupus nephritis, 1982-1995". Archives of Internal Medicine. 160 (20): 3136–3140\. doi:10.1001/archinte.160.20.3136. PMID 11074743.
38. ^ "General Pathology Images for Immunopathology". Archived from the original on 2007-05-10. Retrieved 2007-07-24.
39. ^ a b "The American College of Rheumatology nomenclature and case definitions for neuropsychiatric lupus syndromes". Arthritis and Rheumatism. 42 (4): 599–608\. April 1999. doi:10.1002/1529-0131(199904)42:4<599::AID-ANR2>3.0.CO;2-F. PMID 10211873.
40. ^ a b Kasama T, Maeoka A, Oguro N (2016). "Clinical Features of Neuropsychiatric Syndromes in Systemic Lupus Erythematosus and Other Connective Tissue Diseases". Clinical Medicine Insights. Arthritis and Musculoskeletal Disorders. 9: CMAMD.S37477. doi:10.4137/CMAMD.S37477. PMC 4718090. PMID 26819561.
41. ^ Neuwelt CM, Young RG (April 2, 2009). "Managing neuropsychiatric lupus: Top 10 clinical pearls". The Journal of Musculoskeletal Medicine. 26 (4). Archived from the original on April 27, 2009.
42. ^ a b c Honczarenko K, Budzianowska A, Ostanek L (2008). "Neurological syndromes in systemic lupus erythematosus and their association with antiphospholipid syndrome". Neurologia I Neurochirurgia Polska. 42 (6): 513–517\. PMID 19235104. Archived from the original on 2020-01-07. Retrieved 2009-03-07.
43. ^ Omdal R (2002). "Some controversies of neuropsychiatric systemic lupus erythematosus". Scandinavian Journal of Rheumatology. 31 (4): 192–197\. doi:10.1080/030097402320318369. PMID 12369649. S2CID 1057841.
44. ^ "Lupus site (SLE)". Archived from the original on 2010-03-29. Retrieved 2009-11-06.
45. ^ Xue Z, Wang X, Liu F, Hu S, Zhu S, Zhang S, et al. (February 2009). "Intracranial hypertension syndrome in systemic lupus erythematosus: clinical analysis and review of the literature". Journal of Huazhong University of Science and Technology Medical Sciences. 29 (1): 107–111\. doi:10.1007/s11596-009-0123-3. PMID 19224175. S2CID 195682502.
46. ^ Carrión-Barberà I, Salman-Monte TC, Vílchez-Oya F, Monfort J (April 2021). "Neuropsychiatric involvement in systemic lupus erythematosus: A review". Autoimmunity Reviews. 20 (4). doi:10.1016/j.autrev.2021.102780. PMID 33609799 – via Elsevier Science Direct.
47. ^ West SG (September 1996). "Lupus and the central nervous system". Current Opinion in Rheumatology. 8 (5): 408–414\. doi:10.1097/00002281-199609000-00004. PMID 8941443.
48. ^ Zakeri Z, Shakiba M, Narouie B, Mladkova N, Ghasemi-Rad M, Khosravi A (May 2012). "Prevalence of depression and depressive symptoms in patients with systemic lupus erythematosus: Iranian experience". Rheumatology International. 32 (5): 1179–1187\. doi:10.1007/s00296-010-1791-9. PMID 21253731. S2CID 19597373.
49. ^ Dammacco R (May 2018). "Systemic lupus erythematosus and ocular involvement: an overview". Clinical and Experimental Medicine. 18 (2): 135–149\. doi:10.1007/s10238-017-0479-9. PMID 29243035. S2CID 13757311.
50. ^ Clowse ME (May 2007). "Lupus activity in pregnancy". Rheumatic Disease Clinics of North America. 33 (2): 237–52, v. doi:10.1016/j.rdc.2007.01.002. PMC 2745966. PMID 17499705.
51. ^ Smyth A, Oliveira GH, Lahr BD, Bailey KR, Norby SM, Garovic VD (November 2010). "A systematic review and meta-analysis of pregnancy outcomes in patients with systemic lupus erythematosus and lupus nephritis". Clinical Journal of the American Society of Nephrology. 5 (11): 2060–2068\. doi:10.2215/CJN.00240110. PMC 3001786. PMID 20688887.
52. ^ Cortés-Hernández J, Ordi-Ros J, Paredes F, Casellas M, Castillo F, Vilardell-Tarres M (June 2002). "Clinical predictors of fetal and maternal outcome in systemic lupus erythematosus: a prospective study of 103 pregnancies". Rheumatology. 41 (6): 643–650\. doi:10.1093/rheumatology/41.6.643. PMID 12048290.
53. ^ a b thefreedictionary.com > neonatal lupus Citing: Dorland's Medical Dictionary for Health Consumers. Copyright 2007
54. ^ "Lupus and women's reproductive health". Lupus Foundation of America. Retrieved 1 December 2021.
55. ^ "Methotrexate - Maxtrex, Metoject. Side effects and dosage". patient.info. Retrieved 2022-06-30.
56. ^ D'Cruz DP (April 2006). "Systemic lupus erythematosus". BMJ. 332 (7546): 890–894\. doi:10.1136/bmj.332.7546.890. PMC 1440614. PMID 16613963.
57. ^ Jump RL, Robinson ME, Armstrong AE, Barnes EV, Kilbourn KM, Richards HB (September 2005). "Fatigue in systemic lupus erythematosus: contributions of disease activity, pain, depression, and perceived social support". The Journal of Rheumatology. 32 (9): 1699–1705\. PMID 16142863. Archived from the original on 2007-08-16.
58. ^ Schneider L, Dos Santos AS, Santos M, da Silva Chakr RM, Monticielo OA (August 2014). "Vitamin D and systemic lupus erythematosus: state of the art". Clinical Rheumatology. 33 (8): 1033–1038\. doi:10.1007/s10067-014-2530-5. PMID 24573738. S2CID 28033436.
59. ^ Athanassiou L, Kostoglou-Athanassiou I, Koutsilieris M, Shoenfeld Y (April 2023). "Vitamin D and Autoimmune Rheumatic Diseases". Biomolecules. 13 (4): 709. doi:10.3390/biom13040709. PMC 10135889. PMID 37189455.
60. ^ Irfan SA, Ali AA, Shabbir N, Altaf H, Ahmed A, Thamara Kunnath J, et al. (June 2022). "Effects of Vitamin D on Systemic Lupus Erythematosus Disease Activity and Autoimmunity: A Systematic Review and Meta-Analysis". Cureus. 14 (6): e25896. doi:10.7759/cureus.25896. PMC 9278795. PMID 35844337.
61. ^ Ho LJ, Wu CH, Luo SF, Lai JH (September 2024). "Vitamin D and systemic lupus erythematosus: Causality and association with disease activity and therapeutics". Biochemical Pharmacology. 227: 116417. doi:10.1016/j.bcp.2024.116417. PMID 38996931.
62. ^ Tusseau M, Khaldi-Plassart S, Cognard J, Viel S, Khoryati L, Benezech S, et al. (April 2024). "Mendelian Causes of Autoimmunity: the Lupus Phenotype". Journal of Clinical Immunology. 44 (4): 99. doi:10.1007/s10875-024-01696-8. PMID 38619739.
63. ^ a b c An J, Marwaha A, Laxer RM (September 2024). "Autoinflammatory Diseases: A Review". The Journal of Rheumatology. 51 (9): 848–861\. doi:10.3899/jrheum.2023-1209. PMID 38879186.
64. ^ a b Sestan M, Kifer N, Arsov T, Cook M, Ellyard J, Vinuesa CG, et al. (July 2023). "The Role of Genetic Risk Factors in Pathogenesis of Childhood-Onset Systemic Lupus Erythematosus". Current Issues in Molecular Biology. 45 (7): 5981–6002\. doi:10.3390/cimb45070378. PMC 10378459. PMID 37504294.
65. ^ a b Wu CY, Fan WL, Yang HY, Chu PS, Liao PC, Chen LC, et al. (April 2023). "Contribution of genetic variants associated with primary immunodeficiencies to childhood-onset systemic lupus erythematous". The Journal of Allergy and Clinical Immunology. 151 (4): 1123–1131\. doi:10.1016/j.jaci.2022.12.807. PMID 36586539.
66. ^ Bousfiha A, Moundir A, Tangye SG, Picard C, Jeddane L, Al-Herz W, et al. (October 2022). "The 2022 Update of IUIS Phenotypical Classification for Human Inborn Errors of Immunity". Journal of Clinical Immunology. 42 (7): 1508–1520\. doi:10.1007/s10875-022-01352-z. PMID 36198931.
67. ^ Yu JE (February 2024). "New primary immunodeficiencies 2023 update". Current Opinion in Pediatrics. 36 (1): 112–123\. doi:10.1097/MOP.0000000000001315. PMID 38001560.
68. ^ Wolf C, Lim EL, Mokhtari M, Kind B, Odainic A, Lara-Villacanas E, et al. (February 2024). "UNC93B1 variants underlie TLR7-dependent autoimmunity". Science Immunology. 9 (92): eadi9769. doi:10.1126/sciimmunol.adi9769. PMID 38207055.
69. ^ a b David C, Arango-Franco CA, Badonyi M, Fouchet J, Rice GI, Didry-Barca B, et al. (August 2024). "Gain-of-function human UNC93B1 variants cause systemic lupus erythematosus and chilblain lupus". The Journal of Experimental Medicine. 221 (8). doi:10.1084/jem.20232066. PMC 11176256. PMID 38869500.
70. ^ Pereira KM, Perazzio S, Faria AG, Moreira ES, Santos VC, Grecco M, et al. (August 2019). "Impact of C4, C4A and C4B gene copy number variation in the susceptibility, phenotype and progression of systemic lupus erythematosus". Advances in Rheumatology (London, England). 59 (1): 36. doi:10.1186/s42358-019-0076-6. PMID 31387635.
71. ^ Marin WM, Augusto DG, Wade KJ, Hollenbach JA (January 2024). "High-throughput complement component 4 genomic sequence analysis with C4Investigator". HLA. 103 (1): e15273. doi:10.1111/tan.15273. PMC 11099535. PMID 37899688.
72. ^ Yang W, Ng P, Zhao M, Hirankarn N, Lau CS, Mok CC, et al. (April 2009). "Population differences in SLE susceptibility genes: STAT4 and BLK, but not PXK, are associated with systemic lupus erythematosus in Hong Kong Chinese". Genes and Immunity. 10 (3): 219–26\. doi:10.1038/gene.2009.1. PMID 19225526.
73. ^ Kousi M, Katsanis N (June 2015). "Genetic modifiers and oligogenic inheritance". Cold Spring Harbor Perspectives in Medicine. 5 (6): a017145. doi:10.1101/cshperspect.a017145. PMC 4448705. PMID 26033081.
74. ^ Crouch DJ, Bodmer WF (August 2020). "Polygenic inheritance, GWAS, polygenic risk scores, and the search for functional variants". Proceedings of the National Academy of Sciences of the United States of America. 117 (32): 18924–18933\. Bibcode:2020PNAS..11718924C. doi:10.1073/pnas.2005634117. PMC 7431089. PMID 32753378.
75. ^ Prokunina L, Alarcon-Riquelme M (April 2004). "The genetic basis of systemic lupus erythematosus--knowledge of today and thoughts for tomorrow". Human Molecular Genetics. 13 Spec No 1 (90001): R143 – R148. doi:10.1093/hmg/ddh076. PMID 14764622.
76. ^ Mireles-Canales MP, González-Chávez SA, Quiñonez-Flores CM, León-López EA, Pacheco-Tena C (2018). "DNA Damage and Deficiencies in the Mechanisms of Its Repair: Implications in the Pathogenesis of Systemic Lupus Erythematosus". J Immunol Res. 2018: 8214379. doi:10.1155/2018/8214379. PMC 6079408. PMID 30116756.
77. ^ Meas R, Burak MJ, Sweasy JB (August 2017). "DNA repair and systemic lupus erythematosus". DNA Repair (Amst). 56: 174–182\. doi:10.1016/j.dnarep.2017.06.020. PMC 5543809. PMID 28623091.
78. ^ Robert L. Rubin, Ph.D. "Drug-Induced Lupus Erythematosus". Lupus Foundation of America. (non-archive version no longer available). Archived from the original on 2006-10-13. Retrieved 20 June 2018.
79. ^ Arnaud L, Mertz P, Gavand PE, Martin T, Chasset F, Tebacher-Alt M, et al. (April 2019). "Drug-induced systemic lupus: revisiting the ever-changing spectrum of the disease using the WHO pharmacovigilance database". Annals of the Rheumatic Diseases. 78 (4): 504–508\. doi:10.1136/annrheumdis-2018-214598. PMID 30793701.
80. ^ Millard LG, Rowell NR (September 1979). "Abnormal laboratory test results and their relationship to prognosis in discoid lupus erythematosus. A long-term follow-up study of 92 patients". Archives of Dermatology. 115 (9): 1055–1058\. doi:10.1001/archderm.1979.04010090005011. PMID 314780.
81. ^ Crow MK (February 2008). "Collaboration, genetic associations, and lupus erythematosus". The New England Journal of Medicine. 358 (9): 956–961\. doi:10.1056/NEJMe0800096. PMID 18204099.
82. ^ Hom G, Graham RR, Modrek B, Taylor KE, Ortmann W, Garnier S, et al. (February 2008). "Association of systemic lupus erythematosus with C8orf13-BLK and ITGAM-ITGAX". The New England Journal of Medicine. 358 (9): 900–909\. doi:10.1056/NEJMoa0707865. PMID 18204098. S2CID 18987547.
83. ^ "University of South Carolina School of Medicine lecture notes, Immunology, Hypersensitivity reactions. General discussion of hypersensitivity, not specific to SLE". Pathmicro.med.sc.edu. 2010-07-07. Archived from the original on 2011-08-03. Retrieved 2011-08-06.
84. ^ Scheinfeld NS, DiCostanzo DD, Cohen SR (December 2003). "Reticulate and stellate acral pigmentation associated with systemic lupus erythematosus and high titers of circulating anticardiolipin antibodies: a possible association with acral microlivedo". Journal of Drugs in Dermatology. 2 (6): 674–676\. PMID 14711150.
85. ^ a b D'Cruz DP, Khamashta MA, Hughes GR (February 2007). "Systemic lupus erythematosus". Lancet. 369 (9561): 587–596\. CiteSeerX 10.1.1.1008.5428. doi:10.1016/S0140-6736(07)60279-7. PMID 17307106. S2CID 28468112.
86. ^ Kanta H, Mohan C (July 2009). "Three checkpoints in lupus development: central tolerance in adaptive immunity, peripheral amplification by innate immunity and end-organ inflammation". Genes and Immunity. 10 (5): 390–396\. doi:10.1038/gene.2009.6. PMID 19262576. S2CID 12936040.
87. ^ "Complement C3 (Blood)—Health Encyclopedia—University of Rochester Medical Center". www.urmc.rochester.edu. Archived from the original on 2016-09-24.
88. ^ Gaipl US, Kuhn A, Sheriff A, Munoz LE, Franz S, Voll RE, et al. (2006). "Clearance of apoptotic cells in human SLE". In Elkon KB (ed.). Apoptosis and Its Relevance to Autoimmunity. Current Directions in Autoimmunity. Vol. 9\. Karger. pp. 173–187\. doi:10.1159/000090781. ISBN 978-3-8055-8036-6. PMID 16394661.
89. ^ Gergely P, Grossman C, Niland B, Puskas F, Neupane H, Allam F, et al. (January 2002). "Mitochondrial hyperpolarization and ATP depletion in patients with systemic lupus erythematosus". Arthritis and Rheumatism. 46 (1): 175–190\. doi:10.1002/1529-0131(200201)46:1<175::AID-ART10015>3.0.CO;2-H. PMC 4020417. PMID 11817589.
90. ^ a b Gaipl US, Munoz LE, Grossmayer G, Lauber K, Franz S, Sarter K, et al. (March 2007). "Clearance deficiency and systemic lupus erythematosus (SLE)". Journal of Autoimmunity. 28 (2–3): 114–121\. doi:10.1016/j.jaut.2007.02.005. PMID 17368845 – via Elsevier Science Direct.2–3&rft.pages=114-121&rft.date=2007-03&rft_id=info:doi/10.1016/j.jaut.2007.02.005&rft_id=info:pmid/17368845&rft.aulast=Gaipl&rft.aufirst=Udo+S.&rft.au=Munoz,+Luis+E.&rft.au=Grossmayer,+Gerhard&rft.au=Lauber,+Kirsten&rft.au=Franz,+Sandra&rft.au=Sarter,+Kerstin&rft.au=Voll,+Richard+E.&rft.au=Winkler,+Thomas&rft.au=Kuhn,+Annegret&rft.au=Kalden,+Joachim&rft.au=Kern,+Peter&rft.au=Hermann,+Martin&rft_id=https://www.sciencedirect.com/science/article/pii/S0896841107000194&rfr_id=info:sid/en.wikipedia.org:Lupus" class="Z3988">
91. ^ Monteith AJ, Kang S, Scott E, Hillman K, Rajfur Z, Jacobson K, et al. (April 2016). "Defects in lysosomal maturation facilitate the activation of innate sensors in systemic lupus erythematosus". Proceedings of the National Academy of Sciences of the United States of America. 113 (15): E2142 – E2151. Bibcode:2016PNAS..113E2142M. doi:10.1073/pnas.1513943113. PMC 4839468. PMID 27035940.
92. ^ Kang S, Rogers JL, Monteith AJ, Jiang C, Schmitz J, Clarke SH, et al. (May 2016). "Apoptotic Debris Accumulates on Hematopoietic Cells and Promotes Disease in Murine and Human Systemic Lupus Erythematosus". Journal of Immunology. 196 (10): 4030–4039\. doi:10.4049/jimmunol.1500418. PMC 4868781. PMID 27059595.
93. ^ Hakkim A, Fürnrohr BG, Amann K, Laube B, Abed UA, Brinkmann V, et al. (May 2010). "Impairment of neutrophil extracellular trap degradation is associated with lupus nephritis". Proceedings of the National Academy of Sciences of the United States of America. 107 (21): 9813–9818\. Bibcode:2010PNAS..107.9813H. doi:10.1073/pnas.0909927107. PMC 2906830. PMID 20439745.
94. ^ Yasutomo K, Horiuchi T, Kagami S, Tsukamoto H, Hashimura C, Urushihara M, et al. (August 2001). "Mutation of DNASE1 in people with systemic lupus erythematosus". Nature Genetics. 28 (4): 313–314\. doi:10.1038/91070. PMID 11479590. S2CID 21277651.
95. ^ a b Gaipl US, Munoz LE, Grossmayer G, Lauber K, Franz S, Sarter K, et al. (2007). "Clearance deficiency and systemic lupus erythematosus (SLE)". Journal of Autoimmunity. 28 (2–3): 114–121\. doi:10.1016/j.jaut.2007.02.005. PMID 17368845.2–3&rft.pages=114-121&rft.date=2007&rft_id=info:doi/10.1016/j.jaut.2007.02.005&rft_id=info:pmid/17368845&rft.aulast=Gaipl&rft.aufirst=US&rft.au=Munoz,+LE&rft.au=Grossmayer,+G&rft.au=Lauber,+K&rft.au=Franz,+S&rft.au=Sarter,+K&rft.au=Voll,+RE&rft.au=Winkler,+T&rft.au=Kuhn,+A&rft.au=Kalden,+J&rft.au=Kern,+P&rft.au=Herrmann,+M&rfr_id=info:sid/en.wikipedia.org:Lupus" class="Z3988">
96. ^ a b c Baumann I, Kolowos W, Voll RE, Manger B, Gaipl U, Neuhuber WL, et al. (18 January 2002). "Impaired uptake of apoptotic cells into tingible body macrophages in germinal centers of patients with systemic lupus erythematosus". Arthritis & Rheumatism. 46 (1): 191–201\. doi:10.1002/1529-0131(200201)46:1<191::AID-ART10027>3.0.CO;2-K. ISSN 0004-3591. PMID 11817590.
97. ^ Suárez-Fueyo A, Bradley SJ, Tsokos GC (2016-12-01). "T cells in Systemic Lupus Erythematosus". Current Opinion in Immunology. Autoimmunity. 43: 32–38\. doi:10.1016/j.coi.2016.09.001. ISSN 0952-7915. PMC 5125867. PMID 27636649.
98. ^ Poole BD, Schneider RI, Guthridge JM, Velte CA, Reichlin M, Harley JB, et al. (March 2009). "Early targets of nuclear RNP humoral autoimmunity in human systemic lupus erythematosus". Arthritis and Rheumatism. 60 (3): 848–859\. doi:10.1002/art.24306. PMC 2653589. PMID 19248110.
99. ^ Pan HF, Wu GC, Li WP, Li XP, Ye DQ (March 2010). "High Mobility Group Box 1: a potential therapeutic target for systemic lupus erythematosus". Molecular Biology Reports. 37 (3): 1191–1195\. doi:10.1007/s11033-009-9485-7. PMID 19247800. S2CID 7214396.
100. ^ Aringer M, Costenbader K, Daikh D, Brinks R, Mosca M, Ramsey-Goldman R, et al. (September 2019). "2019 European League Against Rheumatism/American College of Rheumatology Classification Criteria for Systemic Lupus Erythematosus". Arthritis & Rheumatology. 71 (9): 1400–1412\. doi:10.1002/art.40930. PMC 6827566. PMID 31385462.
101. ^ Reich A, Marcinow K, Bialynicki-Birula R (January 2011). "The lupus band test in systemic lupus erythematosus patients". Therapeutics and Clinical Risk Management. 7: 27–32\. doi:10.2147/TCRM.S10145. PMC 3039011. PMID 21339940.
102. ^ Putterman C, Furie R, Ramsey-Goldman R, Askanase A, Buyon J, Kalunian K, et al. (2014). "Cell-bound complement activation products in systemic lupus erythematosus: comparison with anti-double-stranded DNA and standard complement measurements". Lupus Science & Medicine. 1 (1): e000056. doi:10.1136/lupus-2014-000056. PMC 4225732. PMID 25396070.
103. ^ O'Malley T, Xie F, Su Y, Clinton C, Zack DJ, Haechung C, et al. (September 2022). "Complement activation products vs standard ANA testing: Treatment outcomes, diagnosis, and economic impact (CAPSTONE) in systemic lupus erythematosus". Journal of Managed Care & Specialty Pharmacy. 28 (9): 1021–1032\. doi:10.18553/jmcp.2022.22039. PMC 12101568. PMID 35775579. S2CID 250175290.
104. ^ Buyon JP, Clancy RM (December 2003). "Maternal autoantibodies and congenital heart block: mediators, markers, and therapeutic approach". Seminars in Arthritis and Rheumatism. 33 (3): 140–154\. doi:10.1016/j.semarthrit.2003.09.002. PMID 14671725.
105. ^ Kuhn A, Bonsmann G, Anders HJ, Herzer P, Tenbrock K, Schneider M (2015-06-19). "The Diagnosis and Treatment of Systemic Lupus Erythematosus". Deutsches Ärzteblatt International. 112 (25): 423–432\. doi:10.3238/arztebl.2015.0423. ISSN 1866-0452. PMC 4558874. PMID 26179016.
106. ^ "LE cell test". Medline Plus. U.S. National Library of Medicine. Archived from the original on October 6, 2006.
107. ^ Yu C, Gershwin ME, Chang C (2014-02-01). "Diagnostic criteria for systemic lupus erythematosus: A critical review". Journal of Autoimmunity. Diagnostic Criteria in Autoimmune Diseases. 48–49: 10–13\. doi:10.1016/j.jaut.2014.01.004. ISSN 0896-8411. PMID 24461385.
108. ^ "Article on the classification of rheumatic diseases". Rheumatology.org. 2011-06-08. Archived from the original on 2011-07-18. Retrieved 2011-08-06.
109. ^ "Revision of Rheumatology.org's diagnostic criteria". Rheumatology.org. 2011-06-08. Archived from the original on 2011-07-18. Retrieved 2011-08-06.
110. ^ a b c d e f g h i j k l Edworthy SM, Zatarain E, McShane DJ, Bloch DA (October 1988). "Analysis of the 1982 ARA lupus criteria data set by recursive partitioning methodology: new insights into the relative merit of individual criteria". The Journal of Rheumatology. 15 (10): 1493–1498\. PMID 3060613.
111. ^ Weinstein A, Bordwell B, Stone B, Tibbetts C, Rothfield NF (February 1983). "Antibodies to native DNA and serum complement (C3) levels. Application to diagnosis and classification of systemic lupus erythematosus". The American Journal of Medicine. 74 (2): 206–216\. doi:10.1016/0002-9343(83)90613-7. PMID 6600582.
112. ^ "UpToDate Patient information article on DNA antibodies". Patients.uptodate.com. Archived from the original on 2007-10-11. Retrieved 2011-08-06.
113. ^ "Common Symptoms of Lupus". Lupus Foundation of America. Archived from the original on 2013-04-19. Retrieved 7 June 2013.
114. ^ a b Asherson RA, Cervera R, de Groot PG, Erkan D, Boffa MC, Piette JC, et al. (2003). "Catastrophic antiphospholipid syndrome: international consensus statement on classification criteria and treatment guidelines". Lupus. 12 (7): 530–534\. doi:10.1191/0961203303lu394oa. PMID 12892393. S2CID 29222615.
115. ^ Sangle S, D'Cruz DP, Hughes GR (January 2005). "Livedo reticularis and pregnancy morbidity in patients negative for antiphospholipid antibodies". Annals of the Rheumatic Diseases. 64 (1): 147–148\. doi:10.1136/ard.2004.020743. PMC 1755191. PMID 15608315.
116. ^ Hughes GR, Khamashta MA (December 2003). "Seronegative antiphospholipid syndrome". Annals of the Rheumatic Diseases. 62 (12): 1127. doi:10.1136/ard.2003.006163. PMC 1754381. PMID 14644846.
117. ^ Hughes GR (1998). "Is it lupus? The St. Thomas' Hospital "alternative" criteria". Clinical and Experimental Rheumatology. 16 (3): 250–252\. PMID 9631744.
118. ^ Rosario C, Seguro L, Vasconcelos C, Shoenfeld Y (April 3, 2013). "Is there a cure for systemic lupus erythematosus?". Lupus. 22 (5): 417–421\. doi:10.1177/0961203313479839. ISSN 0961-2033.
119. ^ a b c d e f Vasudevan AR, Ginzler EM (August 4, 2009). "Established and novel treatments for lupus". The Journal of Musculoskeletal Medicine. 26 (8).[permanent dead link]
120. ^ Cai T, Zhao J, Yang Y, Jiang Y, Zhang Ja (December 2022). "Hydroxychloroquine use reduces mortality risk in systemic lupus erythematosus: A systematic review and meta-analysis of cohort studies". Lupus. 31 (14): 1714–1725\. doi:10.1177/09612033221129774.
121. ^ a b c d Siegel CH, Sammaritano LR (7 May 2024). "Systemic Lupus Erythematosus: A Review". JAMA. 331 (17): 1480. doi:10.1001/jama.2024.2315.
122. ^ Fernandes Moça Trevisani V, Castro AA, Ferreira Neves Neto J, Atallah AN (February 2013). "Cyclophosphamide versus methylprednisolone for treating neuropsychiatric involvement in systemic lupus erythematosus". The Cochrane Database of Systematic Reviews. 2013 (2): CD002265. doi:10.1002/14651858.cd002265.pub3. PMC 6823222. PMID 23450535.
123. ^ a b "FDA approves first new lupus drug in 56 years". Food and Drug Administration. Archived from the original on 3 May 2011. Retrieved 6 May 2011.
124. ^ a b Vincent FB, Morand EF, Mackay F (March 2012). "BAFF and innate immunity: new therapeutic targets for systemic lupus erythematosus". Immunology and Cell Biology. 90 (3): 293–303\. doi:10.1038/icb.2011.111. PMID 22231653. S2CID 39602817.
125. ^ Murimi-Worstell IB, Lin DH, Kan H, Tierce J, Wang X, Nab H, et al. (March 2021). "Healthcare Utilization and Costs of Systemic Lupus Erythematosus by Disease Severity in the United States". The Journal of Rheumatology. 48 (3): 385–393\. doi:10.3899/jrheum.191187. PMID 32611669.
126. ^ Hannah J, Casian A, D'Cruz D (2016-01-01). "Tacrolimus use in lupus nephritis: A systematic review and meta-analysis". Autoimmunity Reviews. 15 (1): 93–101\. doi:10.1016/j.autrev.2015.09.006. ISSN 1568-9972.
127. ^ "FDA Alert: Mycophenolate Mofetil (marketed as CellCept) and Mycophenolic Acid (marketed as Myfortic)". U.S. Food and Drug Administration. May 16, 2008. Archived from the original on August 3, 2010.
128. ^ Rodziewicz M, Dyball S, Lunt M, McDonald S, Sutton E, Parker B, et al. (2023-05-01). "Early infection risk in patients with systemic lupus erythematosus treated with rituximab or belimumab from the British Isles Lupus Assessment Group Biologics Register (BILAG-BR): a prospective longitudinal study S2665-9913(23)00091-7". The Lancet Rheumatology. 5 (5): e284 – e292. doi:10.1016/s2665-9913(23)00091-7. ISSN 2665-9913. PMID 38251591. S2CID 258325970.
129. ^ "New biological treatments for lupus do not increase the risk of serious infections". NIHR Evidence. 6 December 2023. doi:10.3310/nihrevidence_61092. S2CID 266066283.
130. ^ Alderaan K, Vuk S, Magder L, Petri M (26 September 2014). "Risk factors for cataracts in systemic lupus erythematosus (SLE)". Rheumatology International. 35 (4): 701–708\. doi:10.1007/s00296-014-3129-5. PMID 25257763 – via Springer Nature.
131. ^ Suarez-Almazor ME, Belseck E, Shea B, Wells G, Tugwell P (2000-10-23). "Cyclophosphamide for treating rheumatoid arthritis". The Cochrane Database of Systematic Reviews. 2010 (4): CD001157. doi:10.1002/14651858.cd001157. PMC 8407281. PMID 11034702.
132. ^ Ballantyne JC, Shin NS (July 2008). "Efficacy of Opioids for Chronic Pain: A Review of the Evidence". The Clinical Journal of Pain. 24 (6): 469–478\. doi:10.1097/AJP.0b013e31816b2f26. ISSN 0749-8047. PMID 18574357.
133. ^ "Handout on Health: Systemic Lupus Erythematosus, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, U.S. Department of Health and Human Services". Archived from the original on 2010-12-04. Retrieved 2010-10-13.
134. ^ "Intravenous Immunoglobulins (IVIGs) in Lupus Central Station, sourced from the National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, U.S. Department of Health and Human Services". Archived from the original on 2011-10-20. Retrieved 2010-10-13.
135. ^ a b c Parodis I, Girard-Guyonvarc'h C, Arnaud L, Distler O, Domján A, Ende CH, et al. (2023-07-10). "EULAR recommendations for the non-pharmacological management of systemic lupus erythematosus and systemic sclerosis". Annals of the Rheumatic Diseases. 83 (6): 720–729\. doi:10.1136/ard-2023-224416. ISSN 0003-4967. PMID 37433575. S2CID 259502512.
136. ^ Cochat P, Fargue S, Mestrallet G, Jungraithmayr T, Koch-Nogueira P, Ranchin B, et al. (November 2009). "Disease recurrence in paediatric renal transplantation". Pediatric Nephrology. 24 (11): 2097–2108\. doi:10.1007/s00467-009-1137-6. PMC 2753770. PMID 19247694.
137. ^ Ünlü O, Zuily S, Erkan D (June 2016). "The clinical significance of antiphospholipid antibodies in systemic lupus erythematosus". European Journal of Rheumatology. 3 (2): 75–84\. doi:10.5152/eurjrheum.2015.0085. PMC 5042235. PMID 27708976.
138. ^ a b c d e f Danchenko N, Satia JA, Anthony MS (2006). "Epidemiology of systemic lupus erythematosus: a comparison of worldwide disease burden". Lupus. 15 (5): 308–318\. doi:10.1191/0961203306lu2305xx. PMID 16761508. S2CID 6465663.
139. ^ a b Petri M (2020-04-01). "Pregnancy and Systemic Lupus Erythematosus". Best Practice & Research Clinical Obstetrics & Gynaecology. Rheumatic Diseases and Maternal-Fetal Medicine. 64: 24–30\. doi:10.1016/j.bpobgyn.2019.09.002. ISSN 1521-6934. PMID 31677989.
140. ^ "Handout on Health: Systemic Lupus Erythematosus". The National Institute of Arthritis and Musculoskeletal and Skin Diseases. National Institutes of Health. August 2003. Archived from the original on 2007-10-18. Retrieved 2007-11-23.
141. ^ Sánchez-Guerrero J, Uribe AG, Jiménez-Santana L, Mestanza-Peralta M, Lara-Reyes P, Seuc AH, et al. (2005-12-15). "A Trial of Contraceptive Methods in Women with Systemic Lupus Erythematosus". New England Journal of Medicine. 353 (24): 2539–2549\. doi:10.1056/NEJMoa050817. ISSN 0028-4793. PMID 16354890.
142. ^ "Prognosis and a Hopeful Future". Lupus Foundation of America website. Archived from the original on 20 March 2011. Retrieved 14 December 2010.
143. ^ Singh RR, Yen EY (September 2018). "SLE mortality remains disproportionately high, despite improvements over the last decade". Lupus. 27 (10): 1577–1581\. doi:10.1177/0961203318786436. PMC 6082727. PMID 30016928.
144. ^ a b "OMHD | AMH | Factsheets | Lupus". Archived from the original on 2009-01-11. Retrieved 2017-09-15.
145. ^ Borgia RE, Silverman ED (September 2015). "Childhood-onset systemic lupus erythematosus: an update". Current Opinion in Rheumatology. 27 (5): 483–492\. doi:10.1097/bor.0000000000000208. PMID 26200474. S2CID 27063466.
146. ^ Sule S, Petri M (2006). "Socioeconomic status in systemic lupus erythematosus". Lupus. 15 (11): 720–723\. doi:10.1177/0961203306070008. PMID 17153841. S2CID 11080101.
147. ^ a b c d e f g Pons-Estel GJ, Alarcón GS, Scofield L, Reinlib L, Cooper GS (February 2010). "Understanding the epidemiology and progression of systemic lupus erythematosus". Seminars in Arthritis and Rheumatism. 39 (4): 257–268\. doi:10.1016/j.semarthrit.2008.10.007. PMC 2813992. PMID 19136143.
148. ^ Ow MY, Ho PC, Thumboo J, Wee HL (Nov–Dec 2010). "Factors associated with health services utilization in patients with systemic lupus erythematosus: a systematic review". Clinical and Experimental Rheumatology. 28 (6): 892–904\. PMID 21122271.
149. ^ a b Yelin E, Yazdany J, Tonner C, Trupin L, Criswell LA, Katz P, et al. (March 2015). "Interactions between patients, providers, and health systems and technical quality of care". Arthritis Care & Research. 67 (3): 417–424\. doi:10.1002/acr.22427. PMC 4320034. PMID 25132660.
150. ^ Tsokos GC (December 2011). "Systemic lupus erythematosus". The New England Journal of Medicine. 365 (22): 2110–2121\. CiteSeerX 10.1.1.1008.5428. doi:10.1056/NEJMra1100359. PMID 22129255.
151. ^ Mousavi MJ, Mahmoudi M, Ghotloo S (2020). "Escape from X chromosome inactivation and female bias of autoimmune diseases". Molecular Medicine. 26 (1) 127: 127. doi:10.1186/s10020-020-00256-1. PMC 7727198. PMID 33297945.
152. ^ Zandman-Goddard G, Peeva E, Shoenfeld Y (June 2007). "Gender and autoimmunity". Autoimmunity Reviews. 6 (6): 366–372\. doi:10.1016/j.autrev.2006.10.001. PMID 17537382.
153. ^ Dou DR, Zhao Y, Belk JA, Zhao Y, Casey KM, Chen DC, et al. (2024). "Xist ribonucleoproteins promote female sex-biased autoimmunity". Cell. 187 (3): 733–749.e16. doi:10.1016/j.cell.2023.12.037. PMC 10949934. PMID 38306984.
154. ^ Justiz Vaillant AA, Varacallo M (2019). "article-24526". Lupus Erythematosus. Treasure Island (FL): StatPearls Publishing. PMID 30571026. Retrieved 2019-12-21.
155. ^ "What is the history of lupus?". Lupus Foundation of America. Archived from the original on 4 November 2014. Retrieved 11 October 2014.
156. ^ "Definition in Dictionary.com". Dictionary.reference.com. Archived from the original on 2012-10-26. Retrieved 2012-10-24.
157. ^ "lupus". Dictionary of Medieval Latin from British Sources – via Logeion.
158. ^ Fatovic-Ferencic S, Holubar K. Early history and iconography of lupus erythematosus. Clin Dermatol. 2004 Mar-Apr;22(2):100-4. doi:10.1016/j.clindermatol.2003.12.015. PMID 15234009.
159. ^ Thomas Jr DE (2014). The Lupus Encyclopedia: A Comprehensive Guide for Patients and Families. Baltimore, Maryland: Johns Hopkins University Press. p. 4\. ISBN 978-1-4214-0984-9.
160. ^ Thomas Jr DE (2014). The Lupus Encyclopedia: A Comprehensive Guide for Patients and Families. Baltimore, Maryland: Johns Hopkins University Press. p. 463\. ISBN 978-1-4214-0984-9.
161. ^ Phillips RH (2012). Coping with Lupus: A Practical Guide to Alleviating the Challenges of Systemic Lupus Erythematosus (4th ed.). New York, NY: The Penguin Group. pp. 11–12. ISBN 978-1-58333-445-4.
162. ^ a b c d Talbott JH (1966). "Historical Background of Discoid and Systemic Lupus Erythematosus". In Dubois EL (ed.). Lupus Erythematosus: A review of the current status of Discoid and Systemic Lupus Erythematosus. New York: McGraw Hill. pp. 1–9.
163. ^ Hebra F (1866). Fagge CH (ed.). Diseases of the skin including the Exanthemata (Vol. 1 ed.). London, England: The New Sydenham Society. pp. 114–116.
164. ^ Blau SP, Schultz D (1984). Lupus:The body against itself (2nd ed.). New York: Doubleday & Company Inc. p. 6.
165. ^ Rostein J, Kargar S (1974). "Immunosuppresion Systemic Lupus Erythematosus". Rheumatology: An Annual Review. 5 (5 volumes 1967–1974): 52–53.
166. ^ Carr RI (1986). Lupus Erythematosus: A Handbook for Physicians, Patients, and Their Families (2nd ed.). Lupus Foundation of America Inc. p. 3.
167. ^ Wallace DJ (1995). The Lupus Book. New York: Oxford University Press. p. 8. ISBN 978-0-19-508443-6.
168. ^ Carr RI (1986). Lupus Erythematosus: A Handbook for Physicians, Patients, and Their Families (2nd ed.). Lupus Foundation of America Inc. p. 15.
169. ^ Lahita RH, Phillips RG (2004). Lupus Q&A: Everything you need to know (2nd ed.). New York, NY: Penguin Group (USA). pp. 65–66. ISBN 978-1-58333-196-5.
170. ^ Phillips RH (2012). Coping with Lupus: A Practical Guide to Alleviating the Challenges of Systemic Lupus Erythematosus (4th ed.). New York, NY: The Penguin Group. p. 24. ISBN 978-1-58333-445-4.
171. ^ Thomas Jr DE (2014). The Lupus Encyclopedia: A Comprehensive Guide for Patients and Families. Baltimore, USA: Johns Hopkins University Press. p. 26\. ISBN 978-1-4214-0984-9.
172. ^ Thomas Jr DE (2014). The Lupus Encyclopedia: A Comprehensive Guide for Patients and Families. Baltimore, USA: Johns Hopkins University Press. pp. 17–21\. ISBN 978-1-4214-0984-9.
173. ^ a b Hochberg MC (October 1991). "The history of lupus erythematosus". Maryland Medical Journal. 40 (10): 871–873\. PMID 1943516.
174. ^ Jordan N, D'Cruz DP (February 2015). "Belimumab for the treatment of systemic lupus erythematosus". Expert Review of Clinical Immunology. 11 (2): 195–204\. doi:10.1586/1744666X.2015.996550. PMID 25543845. S2CID 21559971.
175. ^ Couzin-Franke J (6 March 2019). "Genetically engineered immune cells wipe out lupus in mice". Science. AAAS. Retrieved 8 May 2019.
176. ^ Sample I (2022-09-15). "Scientists hail autoimmune disease therapy breakthrough". the Guardian. Retrieved 2022-09-18.
177. ^ Mackensen A, Müller F, Mougiakakos D, Böltz S, Wilhelm A, Aigner M, et al. (October 2022). "Anti-CD19 CAR T cell therapy for refractory systemic lupus erythematosus". Nature Medicine. 28 (10): 2124–2132\. doi:10.1038/s41591-022-02017-5. PMID 36109639. S2CID 252309312.
178. ^ Wilson J (2012-08-16). "Olympic soccer player Shannon Boxx's battle with lupus". CNN. Retrieved 2023-01-29.
179. ^ "The Male Faces of Lupus". Vice.com. 5 January 2017. Retrieved 2023-01-29.
180. ^ Social Media Drama of Social
181. ^ "โรคพุ่มพวง โรคลูปัส โรคเอสแอลอี Lupus SLE - หาหมอ.com". 2019-06-01. Archived from the original on 2019-06-01. Retrieved 2025-02-20.
182. ^ "How Selena Gomez's lupus led to a kidney transplant". www.lupus.org.
183. ^ "Sally Hawkins". Lupus Trust UK. 6 December 2017.
184. ^ O'Connor F (1979). Fitzgerald S (ed.). The Habit of Being: Letters of Flannery O'Connor. Farrar, Straus and Giroux. p. 40\. ISBN 978-0-374-52104-2. (letter to Sally Fitzgerald, undated, summer 1952)
185. ^ Rosenberg A (2 February 2016). "To understand Michael Jackson and his skin, you have to go beyond race". The Washington Post. Retrieved 17 September 2019.
186. ^ Evans M (5 July 2018). "Seal opens up about Lupus battle as he teams up with Myleene Klass and Nile Rodgers for NHS charity single". Metro. Retrieved 15 October 2023.
187. ^ "Toni Braxton is a fighter of Lupus". Heal Good. Archived from the original on February 9, 2016. Retrieved January 23, 2016.

## External links

[edit]

Look up lupus in Wiktionary, the free dictionary.

Wikimedia Commons has media related to Systemic lupus erythematosus.

* Systemic Lupus Erythematosus at the National Institute of Arthritis and Musculoskeletal and Skin Diseases

Classification|

* ICD-10: M32
* ICD-9-CM: 710.0
* OMIM: 152700
* MeSH: D008180
* DiseasesDB: 12782

|

External resources|

* MedlinePlus: 000435
* eMedicine: med/2228 emerg/564
* Patient UK: Lupus

* v
* t
* e

Lupus nephritis

* Class I (Minimal mesangial glomerulonephritis)
* Class II (Mesangial proliferative lupus nephritis)
* Class III (Focal proliferative nephritis)
* Class IV (Diffuse proliferative nephritis)
* Class V (Membranous nephritis)
* Class VI (Glomerulosclerosis)

* v
* t
* e

Diseases of the skin and appendages by morphology

Growths|

| Epidermal|

* Wart
* Callus
* Seborrheic keratosis
* Acrochordon
* Molluscum contagiosum
* Actinic keratosis
* Squamous-cell carcinoma
* Basal-cell carcinoma
* Merkel-cell carcinoma
* Nevus sebaceous
* Trichoepithelioma

|

Pigmented|

* Freckles
* Lentigo
* Melasma
* Nevus
* Melanoma
* Postinflammatory hyperpigmentation

Dermal and
subcutaneous|

* Epidermal inclusion cyst
* Hemangioma
* Dermatofibroma (benign fibrous histiocytoma)
* Keloid
* Lipoma
* Neurofibroma
* Xanthoma
* Kaposi's sarcoma
* Infantile digital fibromatosis
* Granular cell tumor
* Leiomyoma
* Lymphangioma circumscriptum
* Myxoid cyst

Rashes|

| With
epidermal
involvement|

| Eczematous|

* Contact dermatitis
* Atopic dermatitis
* Seborrheic dermatitis
* Stasis dermatitis
* Lichen simplex chronicus
* Darier's disease
* Glucagonoma syndrome
* Langerhans cell histiocytosis
* Lichen sclerosus
* Pemphigus foliaceus
* Wiskott–Aldrich syndrome
* Zinc deficiency

|

Scaling|

* Psoriasis
* Tinea (Corporis
* Cruris
* Pedis
* Manuum
* Faciei)
* Pityriasis rosea
* Secondary syphilis
* Mycosis fungoides
* Systemic lupus erythematosus
* Pityriasis rubra pilaris
* Parapsoriasis
* Ichthyosis

Blistering|

* Herpes simplex
* Herpes zoster
* Varicella
* Bullous impetigo
* Acute contact dermatitis
* Pemphigus vulgaris
* Bullous pemphigoid
* Dermatitis herpetiformis
* Porphyria cutanea tarda
* Epidermolysis bullosa simplex

Papular|

* Scabies
* Insect bite reactions
* Lichen planus
* Miliaria
* Keratosis pilaris
* Lichen spinulosus
* Transient acantholytic dermatosis
* Lichen nitidus
* Pityriasis lichenoides et varioliformis acuta

Pustular|

* Acne vulgaris
* Rosacea
* Folliculitis
* Impetigo
* Candidiasis
* Gonococcemia
* Dermatophyte
* Coccidioidomycosis
* Subcorneal pustular dermatosis

Hypopigmented|

* Tinea versicolor
* Vitiligo
* Pityriasis alba
* Tuberous sclerosis
* Idiopathic guttate hypomelanosis
* Leprosy
* Hypopigmented mycosis fungoides

Without
epidermal
involvement|

| Red|

| Blanchable
Erythema|

| Generalized|

* Drug eruptions
* Viral exanthems
* Toxic erythema
* Systemic lupus erythematosus

|

Localized|

* Cellulitis
* Abscess
* Boil
* Erythema nodosum
* Carcinoid syndrome
* Fixed drug eruption

Specialized|

* Urticaria
* Erythema (Multiforme
* Migrans
* Gyratum repens
* Annulare centrifugum
* Ab igne)

Nonblanchable
Purpura|

| Macular|

* Thrombocytopenic purpura
* Actinic/solar purpura

|

Papular|

* Disseminated intravascular coagulation
* Vasculitis

Indurated|

* Scleroderma/morphea
* Granuloma annulare
* Lichen sclerosis et atrophicus
* Necrobiosis lipoidica

Miscellaneous
disorders|

| Ulcers|

|

Hair|

* Telogen effluvium
* Androgenic alopecia
* Alopecia areata
* Systemic lupus erythematosus
* Tinea capitis
* Loose anagen syndrome
* Lichen planopilaris
* Folliculitis decalvans
* Acne keloidalis nuchae

Nail|

* Onychomycosis
* Psoriasis
* Paronychia
* Ingrown nail

Mucous
membrane|

* Aphthous stomatitis
* Oral candidiasis
* Lichen planus
* Leukoplakia
* Pemphigus vulgaris
* Mucous membrane pemphigoid
* Cicatricial pemphigoid
* Herpesvirus
* Coxsackievirus
* Syphilis
* Systemic histoplasmosis
* Squamous-cell carcinoma

* v
* t
* e

Dermatitis and eczema

Atopic dermatitis|

* Prurigo gestationis
* Sweat allergy

Seborrheic dermatitis|

* Pityriasis simplex capillitii
* Cradle cap

Contact dermatitis
(allergic, irritant)|

* plants: Urushiol-induced contact dermatitis
* African blackwood dermatitis
* Tulip fingers

* other: Abietic acid dermatitis
* Diaper rash
* Airbag dermatitis
* Baboon syndrome
* Contact stomatitis
* Metal allergy
* Protein contact dermatitis

Eczema|

* Autoimmune estrogen dermatitis
* Autoimmune progesterone dermatitis

* Breast eczema
* Ear eczema
* Eyelid dermatitis
* Topical steroid withdrawal
* Hand eczema
* Dyshidrosis
* Hyperkeratotic hand dermatitis
* Autosensitization dermatitis/Id reaction
* Candidid
* Dermatophytid
* Molluscum dermatitis
* Circumostomy eczema
* Juvenile plantar dermatosis
* Nummular eczema
* Nutritional deficiency eczema
* Sulzberger–Garbe syndrome
* Xerotic eczema

Pruritus/Itch/
Prurigo|

* Lichen simplex chronicus/Prurigo nodularis

* by location: Pruritus ani
* Pruritus scroti
* Pruritus vulvae
* Scalp pruritus

* Drug-induced pruritus
* Hydroxyethyl starch-induced pruritus
* Senile pruritus
* Aquagenic pruritus
* Aquadynia

* Adult blaschkitis
* due to liver disease
* Biliary pruritus
* Cholestatic pruritus
* Prion pruritus
* Prurigo pigmentosa
* Prurigo simplex
* Puncta pruritica
* Uremic pruritus

Other|

* substances taken internally: Bromoderma
* Fixed drug reaction

* Nummular dermatitis
* Pityriasis alba
* Papuloerythroderma of Ofuji

* v
* t
* e

Systemic connective tissue disorders

General|

| Systemic lupus erythematosus|

* Drug-induced SLE
* Libman–Sacks endocarditis
* Lupus nephritis

|

Inflammatory myopathy|

* Myositis
* Dermatopolymyositis
* Dermatomyositis/Juvenile dermatomyositis
* Polymyositis* Inclusion body myositis

Scleroderma|

* Systemic scleroderma
* Progressive systemic sclerosis
* CREST syndrome

* Overlap syndrome / Mixed connective tissue disease

Other hypersensitivity/autoimmune|

* Sjögren syndrome

Other|

* IgG4-related disease
* Behçet's disease
* Polymyalgia rheumatica
* Eosinophilic fasciitis
* Eosinophilia–myalgia syndrome
* Ehlers–Danlos syndrome
* fibrillin
* Marfan syndrome
* Congenital contractural arachnodactyly

* v
* t
* e

Hypersensitivity and autoimmune diseases

Type I/allergy/atopy
(IgE)|

| Foreign|

* Allergic asthma
* Allergic urticaria
* Allergic rhinitis (Hay fever)
* Anaphylaxis
* Atopic dermatitis
* Food allergy
* common allergies include: Egg
* Milk
* Peanut
* Seafood
* Soy
* Tree nut
* Wheat
* Penicillin allergy

|

Autoimmune|

* Autoimmune urticaria
* Eosinophilic esophagitis

Type II/ADCC

*     * IgG
* IgM

| Foreign|

* Hemolytic disease of the newborn

|

Autoimmune|

| Cytotoxic|

* Autoimmune hemolytic anemia
* Bullous pemphigoid
* Goodpasture syndrome
* Guillain–Barré syndrome
* Immune thrombocytopenic purpura
* Pemphigus vulgaris
* Rheumatic fever

|

"Type V"/receptor|

* Graves' disease
* Myasthenia gravis
* Pernicious anemia

Type III
(Immune complex)|

| Foreign|

* Arthus reaction
* Farmer's lung
* Henoch–Schönlein purpura
* Hypersensitivity vasculitis
* Post-streptococcal glomerulonephritis
* Reactive arthritis
* Serum sickness

|

Autoimmune|

* Lupus
* Rheumatoid arthritis
* Subacute bacterial endocarditis

Type IV/cell-mediated
(T cells)|

| Foreign|

* Allergic contact dermatitis
* Mantoux test

|

Autoimmune|

* Coeliac disease
* Giant cell arteritis
* Hashimoto's thyroiditis
* Multiple sclerosis
* Postorgasmic illness syndrome
* Reactive arthritis
* Type 1 diabetes

GVHD|

* Transfusion-associated graft-versus-host disease

Unknown/
multiple|

| Foreign|

* Hypersensitivity pneumonitis
* Allergic bronchopulmonary aspergillosis
* Latex allergy (I+IV)
* Transplant rejection

|

Autoimmune|

* Autoimmune adrenalitis
* Autoimmune hepatitis
* Autoimmune polyendocrine syndrome
* APS1
* APS2
* Sjögren syndrome
* Systemic autoimmune disease

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