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The establishment of brain damage model for febrile convulsion in developing rats
Author(s): 
Pages: 225-228
Year: Issue:  3
Journal: JOURNAL OF PEKING UNIVERSITY(HEALTH SCIENCES)

Keyword:  惊厥发热性海马脑损伤神经元;
Abstract: 目的:建立发育期大鼠高热惊厥脑损伤模型.方法:采用热水浴诱导大鼠高热惊厥(febrile convulsion,FC),隔日诱导惊厥1次,共诱导10次.发育期大鼠随机分为3组:45.0 ℃热水浴组(n=6),44.5 ℃热水浴组(n=10),44.0 ℃热水浴组(n=10),选取高热未惊厥与FC比例最合适的一组,将此组的水浴温度定为以后实验的高热处理温度.发育期大鼠随机分为两组:37.0 ℃水浴正常对照组(n=10),44.5 ℃热水浴组(n=40),高热处理组又分为高热未惊厥组(FC=0,n=10)和FC组(FC≥6次,n=22).HE染色观察各组大鼠海马神经元形态学改变;尼氏染色观察海马神经元丢失情况;电镜观察海马神经元超微结构的改变;体视学方法计数海马CA1区神经元数密度.结果:HE染色可见FC组海马CA1区、CA2区细胞排列紊乱、极向不清、细胞空泡变,细胞核大小不一致、圆形或椭圆形;尼氏染色未见FC组明显的海马神经元丢失;FC组大鼠海马CA1区和门区神经元线粒体体积减少、部分出现空泡、基质浓缩、嵴模糊不清或消失,高尔基复合体轻-中度扩张;FC组大鼠海马CA1区神经元数密度显著减少,与正常对照组及高热未惊厥组比较,差异均有显著性.结论:热水浴诱导大鼠FC与人类FC有许多相似之处,大鼠FC频繁发作可导致海马神经元损伤和丢失,是进一步研究高热惊厥脑损伤及其机制的理想模型.
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