首页> 外文学位 >An analysis of nicotine exacerbation of reductions in PPI in a rodent model of schizophrenia.
【24h】

An analysis of nicotine exacerbation of reductions in PPI in a rodent model of schizophrenia.

机译:精神分裂症的啮齿动物模型中尼古丁加剧PPI降低的分析。

获取原文
获取原文并翻译 | 示例

摘要

Prepulse inhibition (PPI) is an operational measure of sensorimotor gating and is known to be reduced when the dopamine D2 receptor is activated. We used a rodent model of psychosis in which increases in dopamine D 2 receptor sensitivity are produced through neonatal quinpirole (a dopamine D2/D3 agonist) treatment to rats. Rats were administered quinpirole (1mg/kg) or saline from postnatal day (P) 1-21. Rats were raised to adulthood and tested on PPI. Results showed that neonatal quinpirole treatment produced a significant reduction in PPI, and nicotine exacerbated this reduction. This reduction was partially blocked by the nicotinic antagonist mecamylamine. Brain tissue was analyzed for regulators of G-protein signaling (RGS) and results showed that neonatal quinpirole significantly decreased RGS9, but increased RGS17 as compared to controls. These results appear to indicate that the G-protein couples more efficiently to the D2 receptor, and nicotine exacerbates PPI deficits in D2 receptor-primed rats.
机译:前脉冲抑制(PPI)是感觉运动门控的一种操作措施,已知当多巴胺D2受体被激活时会降低。我们使用了一种精神病的啮齿动物模型,其中新生的喹吡罗尔(一种多巴胺D2 / D3激动剂)对大鼠产生多巴胺D 2受体敏感性增加。从出生后(P)1-21开始,给大鼠服用喹吡罗(1mg / kg)或生理盐水。将大鼠长大至成年并在PPI上进行测试。结果表明,新生儿喹吡罗治疗可显着降低PPI,尼古丁会加剧这种降低。烟碱拮抗剂美卡明胺部分阻止了这种减少。分析了脑组织中G蛋白信号传导(RGS)的调节剂,结果表明,与对照相比,新生儿喹吡罗显着降低了RGS9,但增加了RGS17。这些结果似乎表明,G蛋白更有效地与D2受体偶联,尼古丁加剧了D2受体致敏大鼠的PPI缺陷。

著录项

  • 作者

    Maple, Amanda M.;

  • 作者单位

    East Tennessee State University.;

  • 授予单位 East Tennessee State University.;
  • 学科 Psychology Psychobiology.; Psychology Clinical.; Psychology Experimental.
  • 学位 M.A.
  • 年度 2007
  • 页码 79 p.
  • 总页数 79
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 心理学;医学心理学、病理心理学;心理学;
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号