Short description: Defined volume of body fluids, typically of the human body
In pharmacokinetics, a compartment is a defined volume of body fluids, typically of the human body, but also those of other animals with multiple organ systems. The meaning in this area of study is different from the concept of anatomic compartments, which are bounded by fasciae, the sheath of fibrous tissue that enclose mammalian organs. Instead, the concept focuses on broad types of fluidic systems. This analysis is used in attempts to mathematically describe distribution of small molecules throughout organisms with multiple compartments. Various multi-compartment models can be used in the areas of pharmacokinetics and pharmacology, in the support of efforts in drug discovery, and in environmental science.
In humans and related organisms, there are five major body compartments: the blood plasma, interstitial fluids, fat tissues, intracellular fluids, and transcellular fluids, the latter of which includes fluids in the pleural (peritoneal) cavity.[1] The relative percents of body mass of these are included in the following table.
| Compartment
|
estimated % of body mass[1]
|
| blood plasma
|
5
|
| interstitial fluid
|
16
|
| fat tissue
|
20 (see also body fat percentage)
|
| intracellular fluid
|
35
|
| transcellular fluid
|
2
|
See also
References
- ↑ 1.0 1.1 Rang, H. P. (2003). Pharmacology. Edinburgh: Churchill Livingstone. ISBN 0-443-07145-4. Page
102
Pharmacology |
|---|
| Ligand (biochemistry) | | Excitatory |
- Agonist
- Endogenous agonist
- Irreversible agonist
- Partial agonist
- Superagonist
- Physiological agonist
|
|---|
| Inhibitory |
- Antagonist
- Competitive antagonist
- Irreversible antagonist
- Physiological antagonist
- Inverse agonist
- Enzyme inhibitor
|
|---|
- Drug
- Neurotransmitter
- Agonist-antagonist
- Pharmacophore
|
|---|
| Pharmacodynamics | | Activity at receptor |
Mechanism of action
Mode of action
Binding
Receptor (biochemistry)
Desensitization (pharmacology)
|
|---|
| Other effects of ligand |
- Selectivity (Binding, Functional)
- Pleiotropy (drugs)
- Non-specific effect of vaccines
- Adverse effects
- Toxicity (Neurotoxicity)
|
|---|
| Analysis |
- Dose–response relationship
- Hill equation (biochemistry)
- Schild plot
- Del Castillo Katz model
- Cheng-Prussoff Equation
- Methods (Organ bath, Ligand binding assay, Patch-clamp)
|
|---|
| Metrics |
- Efficacy
- Intrinsic activity
- Potency (EC50, IC50, ED50, LD50, TD50)
- Therapeutic index
- Affinity
|
|---|
|
|---|
| Pharmacokinetics | | Metrics |
- Loading dose
- Volume of distribution (Initial)
- Rate of infusion
- Onset of action
- Biological half-life
- Plasma protein binding
- Bioavailability
|
|---|
| LADME |
- (L)ADME: (Liberation)
- Absorption
- Distribution
- Metabolism
- Excretion (Clearance)
|
|---|
- Compartment
- Bioequivalence
|
|---|
Related fields | | Neuroscience and psychology |
Neuropsychopharmacology
Neuropharmacology
Psychopharmacology
Electrophysiology
|
|---|
| Medicine |
- Clinical pharmacology
- Pharmacy
- Medicinal chemistry
- Pharmacoepidemiology
|
|---|
| Biochemistry and genetics |
- Pharmacoinformatics
- Pharmacogenetics
- Pharmacogenomics
|
|---|
| Toxicology |
- Pharmacotoxicology
- Neurotoxicology
|
|---|
| Drug discovery |
- Classical pharmacology
- Reverse pharmacology
|
|---|
- Photopharmacology
- Immunopharmacology
- Cell biology
- Physiology
|
|---|
| Other |
Coinduction (anaesthetics)
Combination therapy
Functional analog (chemistry)
Polypharmacology
Chemotherapy
List of drugs
WHO list of essential medicines
| Tolerance and resistance |
- Drug tolerance
- Tachyphylaxis
- Drug resistance
- Antibiotic resistance
- Multiple drug resistance
|
|---|
| Antimicrobial pharmacology |
- Antimicrobial pharmacodynamics
- Minimum inhibitory concentration
- Bacteriostatic
- Minimum bactericidal concentration
- Bactericide
|
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 | Original source: https://en.wikipedia.org/wiki/Compartment (pharmacokinetics). Read more |