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- W2063095016 abstract "Neuropeptide Y (NPY) is the most abundant and widely distributed peptide in the mammalian central nervous system and increases feeding behavior at NPY Y1 or Y5 receptor subtypes. Recent pharmacological and mutant mouse data indicate that NPY activity at its receptors can influence ethanol self-administration, although the direction and strength of this influence are not clear.Effects of the novel NPY Y5 receptor antagonist L-152,804 on the onset and maintenance of operant self-administration were examined in male C57BL/6J mice, which were trained to self-administer ethanol (10% v/v) versus water via the sucrose substitution method during 16 hr overnight sessions. After 4 months of baseline responding, mice were injected with L-152,804 (0, 10, 30, or 60 mg/kg, intraperitoneally) before operant sessions. Potential locomotor effects of L-152,804 and possible interaction with the sedative properties of ethanol also were examined.All three doses of L-152,804 significantly delayed the onset of ethanol-reinforced responding relative to vehicle injection. L-152,804 produced no effect on the total number of ethanol- or water-reinforced responses per 16 hr session. However, L-152,804 selectively modulated the temporal distribution of ethanol-reinforced responding depending on the dose (10 and 60 mg/kg) and time point measured in a manner consistent with blockade of ethanol reinforcement. Additional experiments determined that L-152,804 (10 or 60 mg/kg) did not alter spontaneous locomotor activity or influence the sedative effects of ethanol (4 g/kg).These results indicate that blockade NPY Y5 receptor activity modulates the onset and maintenance of ethanol self-administration. For this reason, NPY-Y5 receptor antagonists may be useful in medical management of alcohol abuse and alcoholism." @default.
- W2063095016 created "2016-06-24" @default.
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- W2063095016 date "2003-12-01" @default.
- W2063095016 modified "2023-09-26" @default.
- W2063095016 title "Neuropeptide-Y Y5 Receptors Modulate the Onset and Maintenance of Operant Ethanol Self-Administration" @default.
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- W2063095016 doi "https://doi.org/10.1097/01.alc.0000098873.80433.ba" @default.
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