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大鼠膀胱平滑肌过度充盈后钙离子分布的变化 被引量:2

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摘要 目的观察大鼠膀胱平滑肌细胞钙离子在亚细胞水平的分布变化,同时探讨钙离子超微结构示踪方法。方法健康雌性W istar大鼠10只,分实验组(膀胱过度充盈2 h+排空后2 h)和正常对照组各5只,用草酸钾-戊二醛灌注固定取膀胱组织制样透射电镜观察。结果示踪钙离子呈20 nm直径高电子密度细颗粒状,正常对照组大鼠膀胱平滑肌示踪钙离子数量少,散在分布于滑面内质网内,实验组示踪钙离子在损伤肌细胞内数量明显增多,弥漫密集分布,尤其聚集在线粒体周围。结论急性尿潴留时膀胱平滑肌功能和结构损害与细胞内钙超载密切相关。钙示踪法是观察细胞内钙超载的可靠方法。
出处 《第三军医大学学报》 CAS CSCD 北大核心 2006年第6期608-609,共2页 Journal of Third Military Medical University
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