The effects of the D1 receptor antagonist SCH-23390 on individual and aggressive behavior in male mice with different experience of aggression.
Neurosci Behav Physiol
; 35(2): 221-7, 2005 Feb.
Article
em En
| MEDLINE
| ID: mdl-15779337
ABSTRACT
The dopaminergic systems of the brain are known to be involved in the mechanisms of aggression. The present report describes studies of the effects of acute administration of the dopamine D1 receptor antagonist SCH-23390 (0.1 mg/kg, i.p., over 30 min) on the individual and aggressive behavior of male mice of the line C57BL/6J with different experience of aggression. A group of animals with no previous experience of aggression responded to administration of this agent with decreases in direct aggression (attacks), though the total time of hostile behavior, i.e., the sum of the durations of attacks, aggressive grooming, and scattering of foreign litter, showed no change. The agent had no effect on the aggressivity of animals with 20 days of experience of agonistic confrontations. The discussion addresses the possible development of pharmacological densensitization of dopamine D1 receptors in aggressive males in response to prolonged activation of the dopaminergic systems in conditions of repeated experience of aggression, as demonstrated previously.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Benzazepinas
/
Agressão
/
Antagonistas dos Receptores de Dopamina D2
/
Individualidade
/
Aprendizagem
Limite:
Animals
Idioma:
En
Revista:
Neurosci Behav Physiol
Ano de publicação:
2005
Tipo de documento:
Article
País de afiliação:
Federação Russa