基质金属蛋白酶和胶原在创伤关节软骨组织中的表达

被引:24
作者
杨军
娄德全
周振东
张钦明
机构
[1] 中国医科大学附属盛京医院脊柱创伤骨科
关键词
基质金属蛋白酶; 胶原; 关节软骨退变; 关节软骨缺损; 骨关节炎;
D O I
暂无
中图分类号
R684 [关节疾病及损伤];
学科分类号
100220 [骨科学];
摘要
背景:研究发现,基质金属蛋白酶和胶原参与关节软骨组织机体生理重建及病理破坏。目的:观察膝关节骨软骨缺损及表面软骨缺损动物模型关节软骨组织中胶原及基质金属蛋白酶的表达变化。方法:雌性SD大鼠48只随机分为3组:骨软骨缺损组在双膝关节制作骨软骨缺损模型,表面缺损组在双膝关节制作表面软骨缺损,对照组双膝关节制作关节囊切开。分别于术后4、8、12周取股骨髁标本,行苏木精-伊红染色,免疫组化检测Ⅰ型胶原、Ⅱ型胶原、基质金属蛋白酶3的表达。结果与结论:骨软骨缺损组术后4周缺损中有少量新生组织生成,8及12周可见到纤维组织填充,修复组织细胞外基质Ⅰ型胶原免疫组化染色阳性,Ⅱ型胶原免疫组化染色阴性,关节软骨组织中基质金属蛋白酶3表达增高。表面缺损组表面软骨缺损4及8周未见修复迹象,12周可见微量纤维组织填充,细胞外基质Ⅰ型胶原免疫组化染色阳性,Ⅱ型胶原免疫组化染色阴性,术后表面缺损组关节软骨组织基质金属蛋白酶3表达增高。对照组关节软骨组织Ⅰ型胶原免疫组化染色阴性,Ⅱ型胶原免疫组化染色阳性,基质金属蛋白酶3低表达,无形态学异常改变。说明机械性损伤可以导致关节软骨细胞外基质成分发生改变,丧失其原有的生物学特性而退变,基质金属蛋白酶3在损伤后的软骨组织中表达增高,使细胞外基质的降解增加,是导致关节软骨退变的重要因素。
引用
收藏
页码:3636 / 3640
页数:5
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