Mycobacterium malmoense

Scientific classification
Domain:  | Bacteria
Phylum:  | Actinomycetota
Class:  | Actinomycetia
Order:  | Mycobacteriales
Family:  | Mycobacteriaceae
Genus:  | Mycobacterium
Species:  |

M. malmoense

Binomial name
Mycobacterium malmoense

Schroder and Juhlin 1977, ATCC 29571

Mycobacterium malmoense is a Gram-positive bacterium from the genus Mycobacterium.

## Contents

* 1 Description
* 2 Type strain
* 3 Etymology
* 4 Infection
* 5 References
* 6 Further reading
* 7 External links

## Description[edit | edit source]

Gram-positive, nonmotile, acid-fast and coccoid to short rods.

* Environmental reservoir: soil and water.

Colony characteristics

* Smooth and nonpigmented colonies, growth below the surface of semisolid agar medium after deep inoculation (as seen with M. bovis), 0.9 - 1.7mm in diameter.

Physiology

* Growth on inspissated egg medium and oleic acid-albumin agar at a temperature range of 22 °C-37 °C requires over 1 week.
* Susceptible to ethambutol, ethionamide, kanamycin and cycloserine.

Differential characteristics

* Antigenic structure: seroagglutination demonstrates a single serovar distinct from that of other species.

## Type strain[edit | edit source]

* First isolated from sputum and biopsy specimens with pulmonary disease in Malmö, Sweden.

Strain ATCC 29571 = CCUG 37761 = CIP 105775 = DSM 44163 = JCM 13391 = NCTC 11298.

## Etymology[edit | edit source]

From the city of Malmö, Sweden where the strain used for the description was isolated from patients.

## Infection[edit | edit source]

a-c)Lung disease due to Mycobacterium malmoense

* Usually infects young children with cervical lymphadenitis or adults with chronic pulmonary disease, (mostly with previously documented pneumoconiosis).
* Rarely causes extrapulmonary diseases and disseminated infections
* The first case of infectious endocarditis by M. malmoense was reported in 2020 in Cali, Colombia. The patient was a 61-year old woman with a history of biological mitral valve replacement due to rheumatic disease, dermatomyositis and rheumatoid arthritis in management with methotrexate, chloroquine, and prednisolone.[1]

## References[edit | edit source]

1. ↑ Posso-Osorio, Iván; Las Salas, Alejandra De; Tobón, Gabriel J.; Sierra-Ruiz, Melibea; Cañas, Carlos A.; Bravo, Juan Carlos; Moncada, Pablo A. (2020). "Mycobacterium malmoense: an unusual pathogen causing endocarditis, a case report and literature review". IDCases. 22: e00999. doi:10.1016/j.idcr.2020.e00999. PMC 7642850. PMID 33194551.

## Further reading[edit | edit source]

* Schroder, K. H.; Juhlin, I. (1977-07-01). "Mycobacterium malmoense sp. nov". International Journal of Systematic Bacteriology. 27 (3): 241–246. doi:10.1099/00207713-27-3-241.

## External links[edit | edit source]

* Type strain of Mycobacterium malmoense at BacDive \- the Bacterial Diversity Metadatabase Archived 2016-09-17 at the Wayback Machine

* v
* t
* e

Mycobacteria (including Nontuberculous)

Slowly growing
(R1P=photochromogenic;
R2S=scotochromogenic;
R3N=nonchromogenic)|

| Long helix 18
(TKHGC)|

| M. tuberculosis group|

MTC
M. tuberculosis
M. bovis
M. africanum
M. microti
M. canetti
M. caprae
M. pinnipedii

MPM
R1P

M. marinum
R2S

M. pseudoshottsii
R3N

M. ulcerans
M. shottsii
M. ulcerans liflandii

Leprosy
M. leprae
M. lepraemurium
M. lepromatosis

R3N
other

M. lacus
M. kumamotonense

|

K/H groups|

| M. kansasii group|

MAC
R3N

M. intracellulare/M. avium
M. avium subp. paratuberculosis
M. chimaera
R2S

M. bohemicum

R1P

M. kansasii
R3N

M. gastri

R2S

M. nebraskense
M. seoulense
R3N

M. scrofulaceum

|

M. haemophilum group|

* M. haemophilum
* R2S
* M. szulgai
* R3N
* M. malmoense

M. gordonae group|

* R1P
* M. asiaticum
* R2S
* M. gordonae

M. conspicuum group|

* R2S
* M. conspicuum

Long helix 18
(other)|

| M. xenopi group|

* M. botniense
* M. shimoidei/M. xenopi
* M. heckeshornense
* M. hassiacum

|

M. celatum group|

* R2S
* M. cookii
* R3N
* M. branderi
* M. celatum

M. hiberniae group|

* M. terrae
* M. hiberniae
* M. nonchromogenicum/M. arupense

Short helix 18|

| M. simiae clade|

M. simiae group
R3N

M. genavense/M. triplex
M. florentinum/M. montefiorense
M. heidelbergense/M. parmense
M. simiae
R2S

M. lentiflavum

M. kubicae group
R3N

M. parascrofulaceum
R2S

M. palustre/M. kubicae

M. interjectum group
M. interjectum
M. saskatchewanense

|

M. intermedium group|

* M. intermedium

Ungrouped|

* M. triviale
* M. doricum
* M. tusciae
* M. arosiense

Rapidly growing/
Runyon IV|

| M. neoaurum group|

* M. mageritense
* M. wolinskyi

* M. canariasense
* M. cosmeticum
* M. diernhoferi
* M. hodleri
* M. frederiksbergense
* M. neoaurum

* M. brisbanense

* M. fluoroanthenivorans

|

F/T groups|

| M. fortuitum group|

* M. chitae/M. fallax/M. gadium

* M. rhodesiae
* M. houstonense

* M. neworleansense/M. boenickei/M. fortuitum/M. porcinum/M. senegalense

* M. septicum/M. peregrinum/M. alvei

* M. farcinogenes

|

M. vaccae group|

* M. obuense/M. gilvum/M. parafortuitum

* M. chlorophenolicum/M. chubuense
* M. psychrotolerans/M. sphagni
* M. aubagnense/M. mucogenicum/M. phocaicum

* AV
* M. aurum
* M. vanbaalenii
* M. vaccae
* M. austroafricanum
* M. pyrenivorans

* M. poriferae

M. smegmatis group|

* M. agri/M. thermoresistibile
* M. duvalii/M. flavescens
* M. monacense
* M. pulveris/M. conceptionense/M. moriokaense

* M. novocastrense/M. brumae/M. phlei

* M. confluentis/M. madagascariense

* M. smegmatis/M. goodii

M. chelonae group|

* M. komossense
* M. murale/M. tokaiense
* M. aichiense
* M. chelonae
* M. abscessus
* M. immunogenum
* M. massiliense
* M. bolletii

M. elephantis group|

* M. elephantis
* M. holsaticum

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