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Effects of electrolytic lesions of basolateral or central nucleus of amygdala on feeding behavior and body weight of the rat
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- Author:
- No author available
- Journal Title:
- JOURNAL OF THE FOURTH MILITARY MEDICAL UNIVERSITY
- Issue:
- 24
- DOI:
- 10.3321/j.issn:1000-2790.2007.24.004
- Key Word:
- 杏仁中央核;杏仁基底外侧核;电解毁损;摄食行为;体重;大鼠
Abstract： 目的:研究杏仁基底外侧核(BLA)及杏仁中央核(CeA)对大鼠摄食行为及体质量调控的影响.方法:采用电解毁损方法对成年雌性大鼠分别行BLA双侧毁损或CeA双侧毁损,对照组行假毁损手术,术后连续10d记录摄食量及体质量变化,实验结束后灌流动物,取脑组织,切片染色,对毁损部位进行定位.结果:对照组大鼠施行假手术后体质量略有下降,之后呈现缓慢上升趋势,动物摄食量呈增大趋势,日平均摄食量1～3 d为(17.9±0.8)g,4～10d为(22.0±0.3)g.毁损BLA组术后体质量呈明显上升趋势,平均增长(24.4±1.4)g(P＜0.01);日平均摄食量也较对照组显著增多,1～3 d为(20.1±0.7)g,4～10 d已增大到(24.6±0.4)g(P＜0.01).毁损CeA组术后体质量呈明显下降趋势,体质量减轻程度明显大于对照组(P＜0.01);大鼠的日平均摄食量也较对照组明显减少,1～3 d为(15.6±1.0)g,4～10 d为(19.8±0.4)g(P＜0.01).结论:CeA可引起食欲,促进摄食并增加体质量;而BLA的作用与其相反,可降低食欲,抑制摄食并控制体质量增长.
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