首页> 外文期刊>Pharmacology, Biochemistry and Behavior >Neurobiological responses to ethanol in mutant mice lacking neuropeptide Y or the Y5 receptor.
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Neurobiological responses to ethanol in mutant mice lacking neuropeptide Y or the Y5 receptor.

机译:缺少神经肽Y或Y5受体的突变小鼠对乙醇的神经生物学反应。

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We have previously shown that voluntary ethanol consumption and resistance are inversely related to neuropeptide Y (NPY) levels in NPY-knockout (NPY -/-) and NPY-overexpressing mice. Here we report that NPY -/- mice on a mixed C57BL/6Jx129/SvEv background showed increased sensitivity to locomotor activation caused by intraperitoneal (ip) injection of 1.5 g/kg of ethanol, and were resistant to sedation caused by a 3.5-g/kg dose of ethanol. In contrast, NPY -/- mice on an inbred 129/SvEv background consumed the same amount of ethanol as wild-type (WT) controls at 3%, 6%, and 10% ethanol, but consumed significantly more of a 20% solution. They exhibited normal locomotor activation following a 1.5-g/kg injection of ethanol, and displayed normal sedation in response to 2.5 and 3.0 g/kg of ethanol, suggesting a genetic background effect. Y5 receptor knockout (Y5 -/-) mice on an inbred 129/SvEv background showed normal ethanol-induced locomotor activity and normal voluntary ethanol consumption, but displayed increased sleep time caused by 2.5 and 3.0 g/kg injection of ethanol. These data extend previous results by showing that NPY -/- mice of a mixed C57BL/6Jx129/SvEv background have increased sensitivity to the locomotor activation effect caused by a low dose of ethanol, and that expression of ethanol-related phenotypes are dependent on the genetic background of NPY -/- mice.
机译:先前我们已经表明,在NPY基因敲除(NPY-/-)和NPY过表达的小鼠中,自愿的乙醇消耗和抗性与神经肽Y(NPY)水平成反比。在这里,我们报告说,在混合C57BL / 6Jx129 / SvEv背景上的NPY-/-小鼠显示出对腹膜内(ip)注射1.5 g / kg乙醇引起的运动激活的敏感性增加,并且对3.5 g引起的镇静具有抵抗力/ kg的乙醇剂量。相比之下,在近交129 / SvEv背景下的NPY-/-小鼠与野生型(WT)对照在3%,6%和10%的乙醇中消耗了相同量的乙醇,但是在20%的溶液中消耗了更多的乙醇。他们在注射1.5 g / kg乙醇后表现出正常的运动激活,并在对2.5和3.0 g / kg乙醇的反应中表现出正常的镇静作用,表明具有遗传背景作用。在近交129 / SvEv背景上的Y5受体基因敲除(Y5-/-)小鼠表现出正常的乙醇诱导的运动活性和正常的自愿性乙醇消耗,但是由于2.5和3.0 g / kg的乙醇注射而导致睡眠时间增加。这些数据扩展了以前的结果,显示了混合C57BL / 6Jx129 / SvEv背景的NPY-/-小鼠对低剂量乙醇引起的自发激活作用的敏感性增加,并且乙醇相关表型的表达依赖于NPY-/-小鼠的遗传背景。

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