Page last updated: 2024-10-24

general adaptation syndrome

Definition

Target type: biologicalprocess

General adaptation syndrome is the set of changes in various organ systems of the body, especially the pituitary-endocrine system, in response to a wide range of strong external stimuli, both physiological and psychological. It is described as having three stages: alarm reaction, where the body detects the external stimulus; adaptation, where the body engages defensive countermeasures against the stressor; and exhaustion, where the body begins to run out of defenses. [PMID:14847556, Wikipedia:General_adaptation_syndrome]

General Adaptation Syndrome (GAS) is a three-stage physiological response to stress developed by Hans Selye. The stages are:

1. Alarm Stage: This is the initial response to stress, characterized by the activation of the sympathetic nervous system. The body releases adrenaline and cortisol, preparing it for "fight or flight." This stage is marked by increased heart rate, respiration, and blood pressure, as well as heightened alertness and a surge of energy.

2. Resistance Stage: If the stressor persists, the body enters the resistance stage. The body attempts to adapt to the stressor by maintaining elevated hormone levels and heightened physiological responses. While the body appears to be coping, it is using up its energy reserves, leaving it vulnerable to other stressors.

3. Exhaustion Stage: If the stressor continues for an extended period, the body enters the exhaustion stage. This stage is characterized by depletion of the body's resources, leading to a weakened immune system, increased susceptibility to illness, and even death. During this stage, the body can no longer effectively resist the stressor and may experience a breakdown in physical and mental health.

GAS is a complex biological process that helps the body respond to stress. However, prolonged exposure to stress can lead to serious health problems. Understanding GAS can help individuals identify and manage stress in their lives.'
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Proteins (1)

ProteinDefinitionTaxonomy
Nuclear receptor subfamily 4 group A member 2A nuclear receptor subfamily 4 group A member 2 that is encoded in the genome of human. [PRO:DNx, UniProtKB:P43354]Homo sapiens (human)

Compounds (18)

CompoundDefinitionClassesRoles
amodiaquineamodiaquine : A quinoline having a chloro group at the 7-position and an aryl amino group at the 4-position.

Amodiaquine: A 4-aminoquinoline compound with anti-inflammatory properties.
aminoquinoline;
organochlorine compound;
phenols;
secondary amino compound;
tertiary amino compound
anticoronaviral agent;
antimalarial;
drug allergen;
EC 2.1.1.8 (histamine N-methyltransferase) inhibitor;
non-steroidal anti-inflammatory drug;
prodrug
chloroquinechloroquine : An aminoquinoline that is quinoline which is substituted at position 4 by a [5-(diethylamino)pentan-2-yl]amino group at at position 7 by chlorine. It is used for the treatment of malaria, hepatic amoebiasis, lupus erythematosus, light-sensitive skin eruptions, and rheumatoid arthritis.

Chloroquine: The prototypical antimalarial agent with a mechanism that is not well understood. It has also been used to treat rheumatoid arthritis, systemic lupus erythematosus, and in the systemic therapy of amebic liver abscesses.
aminoquinoline;
organochlorine compound;
secondary amino compound;
tertiary amino compound
anticoronaviral agent;
antimalarial;
antirheumatic drug;
autophagy inhibitor;
dermatologic drug
oxaprozinoxaprozin : A monocarboxylic acid that is a propionic acid derivative having a 4,5-diphenyl-1,3-oxazol-2-yl substituent at position 3. It is non-steroidal anti-inflammatory drug commonly used to relieve the pain and inflammatory responses associated with osteoarthritis and rheumatoid arthritis.

Oxaprozin: An oxazole-propionic acid derivative, cyclooxygenase inhibitor, and non-steroidal anti-inflammatory drug that is used in the treatment of pain and inflammation associated with of OSTEOARTHRITIS; RHEUMATOID ARTHRITIS; and ARTHRITIS, JUVENILE.
1,3-oxazoles;
monocarboxylic acid
analgesic;
non-steroidal anti-inflammatory drug
simvastatinsimvastatin : A member of the class of hexahydronaphthalenes that is lovastatin in which the 2-methylbutyrate ester moiety has been replaced by a 2,2-dimethylbutyrate ester group. It is used as a cholesterol-lowering and anti-cardiovascular disease drug.

Simvastatin: A derivative of LOVASTATIN and potent competitive inhibitor of 3-hydroxy-3-methylglutaryl coenzyme A reductase (HYDROXYMETHYLGLUTARYL COA REDUCTASES), which is the rate-limiting enzyme in cholesterol biosynthesis. It may also interfere with steroid hormone production. Due to the induction of hepatic LDL RECEPTORS, it increases breakdown of LDL CHOLESTEROL.
delta-lactone;
fatty acid ester;
hexahydronaphthalenes;
statin (semi-synthetic)
EC 1.1.1.34/EC 1.1.1.88 (hydroxymethylglutaryl-CoA reductase) inhibitor;
EC 3.4.24.83 (anthrax lethal factor endopeptidase) inhibitor;
ferroptosis inducer;
geroprotector;
prodrug
bexarotenebenzoic acids;
naphthalenes;
retinoid
antineoplastic agent
5-chloroindole5-chloroindole: a positive allosteric modulator of the 5-HT3 receptor
7-chloro-4-aminoquinoline7-chloro-4-aminoquinoline: structure given in first sourceaminoquinoline
parecoxibparecoxib : An N-acylsulfonamide resulting from the formal condensation of valdecoxib with propionic acid. It is a prodrug for valdecoxib.

parecoxib: structure in first source
isoxazoles;
N-sulfonylcarboxamide
cyclooxygenase 2 inhibitor;
non-narcotic analgesic;
non-steroidal anti-inflammatory drug;
prodrug
tecastemizole
desmethylastemizoledesmethylastemizole: astemizole metabolite in dog plasma; structure given in first sourcebenzimidazoles
arachidonic acidarachidonate : A long-chain fatty acid anion resulting from the removal of a proton from the carboxy group of arachidonic acid.

icosa-5,8,11,14-tetraenoic acid : Any icosatetraenoic acid with the double bonds at positions 5, 8, 11 and 14.
icosa-5,8,11,14-tetraenoic acid;
long-chain fatty acid;
omega-6 fatty acid
Daphnia galeata metabolite;
EC 3.1.1.1 (carboxylesterase) inhibitor;
human metabolite;
mouse metabolite
oleic acidoleic acid : An octadec-9-enoic acid in which the double bond at C-9 has Z (cis) stereochemistry.

Oleic Acid: An unsaturated fatty acid that is the most widely distributed and abundant fatty acid in nature. It is used commercially in the preparation of oleates and lotions, and as a pharmaceutical solvent. (Stedman, 26th ed)
octadec-9-enoic acidantioxidant;
Daphnia galeata metabolite;
EC 3.1.1.1 (carboxylesterase) inhibitor;
Escherichia coli metabolite;
mouse metabolite;
plant metabolite;
solvent
(3R,5S)-fluvastatin(3R,5S)-fluvastatin : A (6E)-7-[3-(4-fluorophenyl)-1-(propan-2-yl)-1H-indol-2-yl]-3,5-dihydroxyhept-6-enoic acid diastereoisomer in which the stereocentres beta- and delta- to the carboxy group have R and S configuration, respectively. The drug fluvastatin is an equimolar mixture of this compound and its enantiomer.(6E)-7-[3-(4-fluorophenyl)-1-(propan-2-yl)-1H-indol-2-yl]-3,5-dihydroxyhept-6-enoic acid;
statin (synthetic)
methyl indole-3-carboxylatemethyl indole-3-carboxylate : The methyl ester of indole-3-carboxylic acid.indoles;
methyl ester
metabolite
linoleic acidlinoleic acid : An octadecadienoic acid in which the two double bonds are at positions 9 and 12 and have Z (cis) stereochemistry.

Linoleic Acid: A doubly unsaturated fatty acid, occurring widely in plant glycosides. It is an essential fatty acid in mammalian nutrition and is used in the biosynthesis of prostaglandins and cell membranes. (From Stedman, 26th ed)
octadecadienoic acid;
omega-6 fatty acid
algal metabolite;
Daphnia galeata metabolite;
plant metabolite
alprostadilprostaglandins Eanticoagulant;
human metabolite;
platelet aggregation inhibitor;
vasodilator agent
prostaglandin a1prostaglandins A
pitavastatinpitavastatin : A dihydroxy monocarboxylic acid that is (6E)-7-[2-cyclopropyl-4-(4-fluorophenyl)quinolin-3-yl]hept-6-enoic acid in which the two hydroxy groups are located at positions 3 and 5 (the 3R,5S-stereoisomer). Used as its calcium salt for treatment of hypercholesterolemia (elevated levels of cholesterol in the blood) on patients unable to sufficiently lower their cholesterol levels by diet and exercise.cyclopropanes;
dihydroxy monocarboxylic acid;
monofluorobenzenes;
quinolines;
statin (synthetic)
antioxidant