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- W2093001303 abstract "Neuropeptide Y (NPY) is widely distributed throughout the brain and has been implicated in some of the actions of ethanol. The aim of the present study was to characterize the subtypes of NPY receptors in ethanol induced sedation, tolerance and withdrawal hyper-excitability. The loss of righting reflex paradigm was used to record the sleep duration in mice. The acute administration of ethanol (3–4 g per kg, i.p., 20% v/v) resulted in marked sedation. While prolonged ethanol consumption led to the development of tolerance, the mice showed hyper-excitability following ethanol withdrawal. Prior acute intracerebroventricular (i.c.v.) injection of NPY (5–20 ng per mouse) or NPY Y1 and Y5 receptors agonist [Leu31, Pro34]-NPY (0.02–0.2 ng per mouse) potentiated ethanol induced sedation. On the other hand, administration of selective NPY Y1 receptor antagonist BIBP3226 (5 ng per mouse, i.c.v.) inhibited ethanol induced sedation. Chronic concomitant treatment of NPY (20 ng per mouse, i.c.v.) or [Leu31, Pro34]-NPY (0.2 ng per mouse, i.c.v.) to ethanol-fed groups prevented the development of tolerance and attenuated withdrawal hyper-excitability. Moreover, acute treatment of NPY (5 ng per mouse, i.c.v.) or [Leu31, Pro34]-NPY (0.02 ng per mouse, i.c.v.) reversed the peak ethanol withdrawal hyper-excitability. The results underscore a role for NPY Y1 and Y5 receptors in the ethanol induced sedation, tolerance and withdrawal hyper-excitability. We suggest that modulation of NPY Y1 and Y5 receptors may be a strategy to address the ethanol withdrawal conditions." @default.
- W2093001303 created "2016-06-24" @default.
- W2093001303 creator A5006168278 @default.
- W2093001303 creator A5009142848 @default.
- W2093001303 creator A5040276048 @default.
- W2093001303 creator A5054769053 @default.
- W2093001303 creator A5089054612 @default.
- W2093001303 date "2009-11-01" @default.
- W2093001303 modified "2023-10-16" @default.
- W2093001303 title "Tolerance to ethanol sedation and withdrawal hyper-excitability is mediated via neuropeptide Y Y1 and Y5 receptors" @default.
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- W2093001303 doi "https://doi.org/10.1016/j.lfs.2009.10.007" @default.