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Effect of selective agonist of serotonin 5-HT1A receptors on defensive behavior in mice with different predisposition to catalepsy.

TitleEffect of selective agonist of serotonin 5-HT1A receptors on defensive behavior in mice with different predisposition to catalepsy.
Publication TypeJournal Article
Year of Publication2010
AuthorsBazovkina, DV, Terenina, EE, Kulikov, AV
JournalBull Exp Biol Med
Volume150
Issue2
Pagination225-8
Date Published2010 Dec
ISSN1573-8221
Keywords8-Hydroxy-2-(di-n-propylamino)tetralin, Aggression, Analysis of Variance, Animals, Catalepsy, Dose-Response Relationship, Drug, Freezing Reaction, Cataleptic, Genetic Predisposition to Disease, Male, Mice, Mice, Mutant Strains, Receptor, Serotonin, 5-HT1A, Serotonin 5-HT1 Receptor Agonists
Abstract

We studied the effect of activation of serotonin 5-HT1A receptors with selective agonist 8-OH-DPAT (0.1, 0.5, and 1.0 mg/kg) on intraspecies aggression and freezing reaction (catalepsy) in male mice of catalepsy-resistant AKR/J and two catalepsy-prone strains CBA/Lac and congenic AKR.CBA-D13Mit76. The latter strain differs from AKR strain only by terminal chromosome 13 fragment transferred from CBA strain and containing a locus determining predisposition to catalepsy and a gene encoding 5-HT1A receptor. 8-OH-DPAT in a low dose (0.1 mg/kg) affecting primarily presynaptic receptors suppressed aggressive behavior in CBA mice, but had no effect on the time of cataleptic freezing. At the same time, this dose of the drug produced no significant effect on aggression in AKR and AKR.CBA-D13Mit76 mice, but significantly attenuated freezing in AKR.CBA-D13Mit76 mice. High doses of 8-OH-DPAT (0.5 and 1 mg/kg) which affected mainly postsynaptic receptors inhibited catalepsy in CBA and AKR.CBA-D13Mit76 mice and in a dose of 1 mg/kg it suppressed aggression in all tested mouse strains. We concluded that the genome of the recipient strain (AKR) modulated the involvement of 5-HT(1A) receptors into the regulation of aggression and catalepsy in mice.

Alternate JournalBull. Exp. Biol. Med.
PubMed ID21240379