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- 2017
2种骨内植入材料界面的多核巨细胞分布与骨桥蛋白表达
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Abstract:
摘要 目的:比较医用纯钛和聚甲基丙烯酸甲酯(PMMA)2种材料-骨界面多核巨细胞分布情况和骨桥蛋白表达情况。方法:将医用纯钛和PMMA制成的种植体各30枚植入30只SD大鼠的两侧股骨远端髁突内,分别于3、7、14、21和28 d时处死动物。制备脱钙石蜡切片,HE染色观察种植体-骨间隙愈合界面多核巨细胞的分布;免疫组织化学法检测种植体-骨界面骨桥蛋白的表达情况。结果:HE结果显示在5个时间点里均可以观察到种植体-骨界面有多核巨细胞的形成,3 d时达到高峰且PMMA组多核巨细胞的数量明显多于钛组(P<0.05);多核巨细胞数目随时间推移均呈现下降趋势,在21 d和28 d时无统计学差异。骨桥蛋白的表达在7d时达到高峰期,且医用纯钛组明显强于PMMA组(P<0.05)。随时间延长,骨桥蛋白在钛组和PMMA组的表达均逐渐减弱。结论:不同骨内植入材料影响其界面的多核巨细胞分布与骨桥蛋白的表达
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