钟培瑞;周君;廖源;孙光华;刘静;伍琦;周桂娟;廖瑛;

• 1:南华大学附属第一医院康复医学科康复医学实验室

摘要(Abstract)：

[目的]观察帕瑞昔布对膝骨关节炎大鼠关节软骨、软骨下骨及自噬标志物Beclin-1表达的影响。[方法] 30只雄性SD大鼠随机分为假手术组、模型组、治疗组。假手术组仅切开膝关节皮肤,模型组与治疗组应用Hulth法复制OA模型。治疗组自术后首天起腹腔注射帕瑞昔布[10 mg/(kg·d)],每周5次,连续12周。12周后处死大鼠,ELISA法检测血清IL-1、IL-6、CTX-Ⅰ、CTX-Ⅱ、TRACP-5b;关节软骨行HE、番红O染色及Mankin评分;Micro-CT扫描软骨下骨;RT-QPCR技术检测Beclin-1 mRNA表达量。[结果]模型组IL-1、IL-6、CTX-Ⅰ、CTX-Ⅱ、TRACP-5b水平高于假手术组(P<0.05);治疗组IL-1、IL-6、CTX-Ⅱ水平低于模型组(P<0.05)。治疗组Mankin评分低于模型组(P<0.05)。与假手术组比较,模型组骨体积分数(BV/TV)、骨小梁量(Tb.N)显著降低(P<0.05),而骨小梁分离度(Tb.Sp)显著增高(P<0.05)。与模型组比较,治疗组骨体积分数(BV/TV)、骨小梁量(Tb.N)降低(P<0.05),而骨小梁分离度Tb.Sp增高(P<0.05)。治疗组Beclin-1 mRNA表达量高于假手术组与模型组(P<0.05)。[结论]帕瑞昔布可改善OA大鼠关节软骨退变,其机制可能是通过增强细胞自噬来完成。并能促进大鼠软骨下骨骨量丢失,可能给OA治疗带来负面影响。

关键词(KeyWords)： 骨关节炎;自噬;关节软骨;软骨下骨

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金资助项目(编号:81674045);; 湖南省自然科学基金项目(编号:2017JJ3272);; 湖南省教育厅优秀青年项目(编号:17B232);; 湖南省卫计委课题(编号:B20180062)

作者(Author): 钟培瑞;周君;廖源;孙光华;刘静;伍琦;周桂娟;廖瑛;

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