Biomaterial Database

Reversal of antidepressant action by dopamine antagonists in an animal model of depression. 1991

D Sampson, and P Willner, and R Muscat

Psychology Department, City of London Polytechnic, UK.

Rats subjected chronically (12 weeks) to a variety of mild, unpredictable stressors showed a reduced consumption of sucrose or a sucrose/saccharin mixture in two-bottle consumption tests (sweet solution versus water). The deficit was apparent within 2 weeks of stress; normal behaviour was restored by chronic (7 weeks) treatment with the tricyclic antidepressants desmethylimipramine (DMI) or amitriptyline (AMI). Acute administration of the dopamine D1 receptor antagonist SCH-23390 1 week after withdrawal, or the dopamine D2 receptor antagonist sulpiride 2 weeks after withdrawal, were without effect in vehicle-treated stressed animals, and in non-stressed animals. However, the DA antagonists selectively reversed the improvement of performance in DMI- or AMI-treated stressed animals. This suggests that an increase in functional activity at DA synapses is the mechanism of action of DMI and AMI in this model.

UI	MeSH Term	Description	Entries
D008297	Male		Males
D003866	Depressive Disorder	An affective disorder manifested by either a dysphoric mood or loss of interest or pleasure in usual activities. The mood disturbance is prominent and relatively persistent.	Depression, Endogenous,Depression, Neurotic,Depression, Unipolar,Depressive Syndrome,Melancholia,Neurosis, Depressive,Unipolar Depression,Depressions, Endogenous,Depressions, Neurotic,Depressions, Unipolar,Depressive Disorders,Depressive Neuroses,Depressive Neurosis,Depressive Syndromes,Disorder, Depressive,Disorders, Depressive,Endogenous Depression,Endogenous Depressions,Melancholias,Neuroses, Depressive,Neurotic Depression,Neurotic Depressions,Syndrome, Depressive,Syndromes, Depressive,Unipolar Depressions
D004195	Disease Models, Animal	Naturally-occurring or experimentally-induced animal diseases with pathological processes analogous to human diseases.	Animal Disease Model,Animal Disease Models,Disease Model, Animal
D004327	Drinking Behavior	Behaviors associated with the ingesting of water and other liquids; includes rhythmic patterns of drinking (time intervals - onset and duration), frequency and satiety.	Behavior, Drinking,Behaviors, Drinking,Drinking Behaviors
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia
D000929	Antidepressive Agents, Tricyclic	Substances that contain a fused three-ring moiety and are used in the treatment of depression. These drugs block the uptake of norepinephrine and serotonin into axon terminals and may block some subtypes of serotonin, adrenergic, and histamine receptors. However, the mechanism of their antidepressant effects is not clear because the therapeutic effects usually take weeks to develop and may reflect compensatory changes in the central nervous system.	Antidepressants, Tricyclic,Tricyclic Antidepressant,Tricyclic Antidepressant Drug,Tricyclic Antidepressive Agent,Tricyclic Antidepressive Agents,Antidepressant Drugs, Tricyclic,Agent, Tricyclic Antidepressive,Agents, Tricyclic Antidepressive,Antidepressant Drug, Tricyclic,Antidepressant, Tricyclic,Antidepressive Agent, Tricyclic,Drug, Tricyclic Antidepressant,Drugs, Tricyclic Antidepressant,Tricyclic Antidepressant Drugs,Tricyclic Antidepressants
D001552	Benzazepines	Compounds with BENZENE fused to AZEPINES.
D013315	Stress, Psychological	Stress wherein emotional factors predominate.	Cumulative Stress, Psychological,Emotional Stress,Individual Stressors,Life Stress,Psychological Cumulative Stress,Psychological Stress Experience,Psychological Stress Overload,Psychologically Stressful Conditions,Stress Experience, Psychological,Stress Measurement, Psychological,Stress Overload, Psychological,Stress Processes, Psychological,Stress, Emotional,Stressful Conditions, Psychological,Psychological Stress,Stress, Psychologic,Stressor, Psychological,Condition, Psychological Stressful,Condition, Psychologically Stressful,Conditions, Psychologically Stressful,Cumulative Stresses, Psychological,Experience, Psychological Stress,Individual Stressor,Life Stresses,Measurement, Psychological Stress,Overload, Psychological Stress,Psychologic Stress,Psychological Cumulative Stresses,Psychological Stress Experiences,Psychological Stress Measurement,Psychological Stress Measurements,Psychological Stress Overloads,Psychological Stress Processe,Psychological Stress Processes,Psychological Stresses,Psychological Stressful Condition,Psychological Stressful Conditions,Psychological Stressor,Psychological Stressors,Psychologically Stressful Condition,Stress Experiences, Psychological,Stress Processe, Psychological,Stress, Life,Stress, Psychological Cumulative,Stressful Condition, Psychological,Stressful Condition, Psychologically,Stressor, Individual
D013395	Sucrose	A nonreducing disaccharide composed of GLUCOSE and FRUCTOSE linked via their anomeric carbons. It is obtained commercially from SUGARCANE, sugar beet (BETA VULGARIS), and other plants and used extensively as a food and a sweetener.	Saccharose
D013469	Sulpiride	A dopamine D2-receptor antagonist. It has been used therapeutically as an antidepressant, antipsychotic, and as a digestive aid. (From Merck Index, 11th ed)	Aiglonyl,Arminol,Deponerton,Desisulpid,Digton,Dogmatil,Dolmatil,Eglonyl,Ekilid,Guastil,Lebopride,Meresa,Pontiride,Psicocen,Sulp,Sulperide,Sulpitil,Sulpivert,Sulpor,Synédil,Tepavil,Vertigo-Meresa,neogama,vertigo-neogama,Vertigo Meresa,vertigo neogama