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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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骨组织结构显微形态分析
, PP. 403-406
Keywords: 骨小管,骨陷窝,原子力显微镜,扫描电镜,骨组织,形态学
Abstract:
目的应用原子力显微镜和扫描电镜观察分析人长管状骨组织中的微观结构,以了解骨组织的超微结构以及胶原和矿物质的构成和形态。方法取新鲜人尸体肱骨标本,固定脱水,分别制作骨磨片和切成薄片,分别在光学显微镜、原子力显微镜和扫描电镜分析骨组织矿化区的结构。结果在光学显微镜下,骨陷窝呈环状排列在哈佛管周围,骨小管沟通骨陷窝与哈佛管和骨陷窝之间的联系。在原子力显微镜的观察下,大胶原蛋白的形态清楚显示;在矿化区胶原蛋白纤维增厚,呈小盘叠加形态,钙-磷晶体呈椭圆柱形状;可清晰观察到骨小管和骨陷窝的大小和形态及骨小管和骨陷窝的关系。在扫描电镜下,骨基质呈环形沿哈佛系统排列,钙-磷晶体之间相互呈规则排列。结论原子力显微镜可分析胶原蛋白和基质中钙-磷晶体的三维结构形态、骨小管和骨陷窝的三维构成及大小;骨小管是交流营养物质和分子信号到骨陷窝中骨细胞的通道。
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