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Opposite effects on the ingestion of ethanol and sucrose solutions after injections of muscimol into the nucleus accumbens shell

机译：对核心腺壳中的乙醇和蔗糖溶液摄取乙醇和蔗糖溶液的相反影响

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Injection of the GABAA receptor agonist muscimol into the nucleus accumbens shell (AcbSh) elicits robust feeding in satiated rats, but has no effect on water intake. The current study was designed to examine whether intra-AcbSh muscimol injections influence the intake of ethanol solutions in rats trained to drink using a limited access paradigm. We confirmed that bilateral injections of muscimol (100 ng) into the AcbSh produce large increases in the intake of sucrose solutions and of the chow maintenance diet but found in two independent experiments that these injections potently reduce the intake of a 10% ethanol solution. Furthermore, intra-AcbSh muscimol significantly increased intake of an ethanol-sucrose mixture. These results demonstrate that activating GABAA receptors in the vicinity of the AcbSh can have opposite effects on the intake of different caloric substances and are consistent with the possibility that GABAergic circuits in the AcbSh may play a role in mediating voluntary ethanol intake.

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