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-  2015 

冰冻切片法观察不脱钙骨组织的荧光分布

DOI: doi:10.7507/1002-1892.20150306

Keywords: 冰冻切片, 不脱钙骨组织, 免疫荧光, 大鼠

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Abstract:

目的介绍一种不脱钙骨组织的冰冻切片法,通过观察骨和软骨内的荧光分布,探讨该方法的可行性。 方法取健康成年雄性绿色荧光蛋白转基因SD大鼠膝关节,经包埋剂包埋,置于冰冻切片机中,将表面涂有合成橡胶的薄膜黏附于包埋块表面,行膝关节组织切片。荧光显微镜及光镜下观察切片组织内荧光表达及结构;并行Ⅰ、Ⅱ型胶原免疫荧光染色和HE、甲苯胺蓝、茜素红染色,观察软骨及骨的结构及荧光分布特征。 结果制备的大鼠膝关节冰冻切片厚度均为6 μm,大体观察示关节各结构均完整切割,光镜下能清晰分辨切片软骨各层细胞形态以及软骨下骨、骨小梁排列走行。荧光显微镜下观察,可见关节周围软组织、软骨及骨组织呈绿色荧光,Ⅰ型胶原在骨组织表达,Ⅱ型胶原在软骨组织表达。HE染色及甲苯胺蓝染色能清晰分辨软骨层形态结构。茜素红染色示软骨下骨板、半月板内部组织结构完整,而且胫骨近端的皮质骨连续性存在。 结论采用冰冻切片法制备不脱钙骨组织切片,可直接观察骨、软骨组织内荧光物质的分布,缩短骨组织切片的制备周期

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