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Chronic water immersion-restraint stress-induced ultrastructural injury to interstitial cells of Cajal in the rat gastric antrum
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- Author:
- No author available
- Journal Title:
- WORLD CHINESE JOURNAL OF DIGESTOLOGY
- Issue:
- 7
- DOI:
- 10.3969/j.issn.1009-3079.2010.07.013
- Key Word:
- 束缚水浸;Cajal间质细胞;超微结构
Abstract： 目的:研究不同时程慢性束缚水浸应激对大鼠胃窦Cajal间质细胞(ICC)超微结构的损伤,量化分析细胞内不同超微结构的损伤程度.方法:48只雄性SD大鼠随机分为6组,即实验3d、7 d、28 d组和对照3 d、7 d、28 d组,每组8只.实验组每日给予束缚水浸1 h,对照组自由摄食饮水;禁食12 h后分别于第4、8、29天晨脱颈处死,每组中的3只大鼠被各取胃窦组织2块放入3%戊二醛中固定并送电镜室镜检.将损伤的严重程度分成0-3级并以此标准计分并计算.结果:不同应激时间组大鼠胃窦ICC的核周间隙、基膜、内质网的损伤严重程度无明显差别.缝隙连接和线粒体的损伤积分有明显差异,胞质溶解、粗面内质网减少、核异常程度积分有极显著性差异:量化分析显示:随着应激时间的延长,超微结构受损呈现逐渐加重的趋势,主要表现在缝隙连接、线粒体、胞质和粗面内质网等方面.结论:慢性应激可以导致大鼠胃窦ICC超微结构的损伤,不同细胞超微结构的损伤随应激的延长有所差别;量化分析可以显示不同细胞器受损伤的程度.
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