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  • Title: Bombesin-induced grooming in the golden hamster.
    Author: Kulkosky PJ, Foderaro MA, Glazner GW, Niichel VI, Schnur P.
    Journal: Behav Brain Res; 1988 Jul; 29(1-2):173-7. PubMed ID: 3401317.
    Abstract:
    Lateral cerebroventricular injection of the peptide bombesin (0.01-1.0 micrograms) promptly elicited excessive grooming and scratching behaviors in home-caged male and female golden hamsters. Bombesin-induced grooming persisted throughout a 60-min observation period at doses of 0.1-1.0 micrograms. Grooming with forepaws and mouth was more consistently increased than hindleg scratching behaviors. Dependence of this neuropeptide effect on grooming on muscarinic cholinergic activity was assessed by injecting scopolamine (0.001-1 mg/kg) intraperitoneally 15 min prior to 0.1 microgram bombesin. Excessive grooming induced by centrally administered bombesin was abolished by 0.1 and 1 mg/kg scopolamine, although basal level of grooming was not significantly affected. The findings indicate a cross-species generality of the dependence of bombesin-induced grooming on muscarinic cholinergic activity, and species-specific differences among rodents in the components of excessive grooming elicited by bombesin.
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