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LASEK角膜上皮瓣活性及基底膜分离定位研究

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摘要 为探讨乙醇不同作用时间对角膜上皮瓣活性的影响,并确定角膜上皮瓣的解剖分离层面,按标准LASEK手术方法制备尸体眼角膜上皮瓣,进行HE、PCNA、层粘连蛋白免疫组化及VII型胶原免疫荧光染色,评价角膜上皮瓣细胞活性,确定LASEK手术中角膜上皮瓣的解剖分离层面。结果显示,角膜上皮瓣为复层上皮细胞组织,没有Bowman层和角膜基质成份,PCNA阳性率为乙醇作用时间20 s>30 s>40 s,其层粘蛋白(lami-nin)染色在角膜床和上皮瓣基底膜一侧均有呈片段样棕色条纹状,其胶原VII染色阳性反应呈一条绿色线形,而且只存在于角膜床,上皮瓣基底膜侧不着色。结论:角膜上皮瓣活性随乙醇浸润时间延长而降低;乙醇浸润法制备角膜上皮瓣的组织分离层面位于角膜上皮基底膜内,并且定位于基底膜的透明层和致密层之间。
出处 《沈阳部队医药》 2008年第2期95-97,F0004,共4页
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