骨关节炎SD大鼠关节软骨中蛋白多糖与YKL-40的相关性  

Relationship between Aggrecan and YKL-40 in articular cartilage of Sprague-Dawlay rats with osteoarthritis

作　　者：陈喜德[1] 宋丽君[2] 魏波[1] 刘军[1] 林颢[1] 

机构地区：[1]广东医学院附属医院骨科,广东湛江524001 [2]广东医学院附属医院生殖中心,广东湛江524001

出　　处：《重庆医学》2014年第10期1214-1217,共4页Chongqing medicine

基　　金：广东医学院附属医院青年科研基金资助项目(205019010021)

摘　　要：目的通过检测骨关节炎(OA)关节软骨中蛋白多糖与YKL-40的表达,探讨OA关节软骨中蛋白多糖与YKL-40的相关性。方法将56只健康SD大鼠分为7组,每组8只。选取一侧膝关节行前交叉韧带离断,建立OA模型。分别于手术当天,术后2、4、8、12、16、20周随机处死1组大鼠,收集不同时间段手术侧关节软骨样本,行番红O/固绿染色和HE染色,根据改良Mankin评分对OA样本进行病理分期。免疫组织化学染色检测蛋白多糖、YKL-40在各期OA关节软骨中的表达,并分析蛋白多糖与YKL-40在OA发病过程中的相关性。结果随着OA病情加重,蛋白多糖表达逐渐减少,YKL-40表达均逐渐增多。在OA早、中、晚期,差异有统计学意义(P<0.05)。蛋白多糖与YKL-40表达呈负相关(P<0.05)。结论随着OA病情加重,软骨蛋白多糖水平进行性减少。蛋白多糖与YKL-40水平呈负相关,可在一定程度上反映关节软骨细胞的去分化程度。Objective To investigate the inducing effects of selenium dioxide（SeO2 ） on the apoptosis in human cervical carcino-ma cell line Hela and its influence on the expression of apoptosis-related proteins caspase-3 and P53 .Methods Hela cells were trea-ted with different concentrations of SeO2 for 24 h in vitro ;the morphological changes of Hela cells were observed by the optical mi-croscope;the influence of SeO2 on the cell proliferation and vitality was examined by the MTT assay ;the flow cytometry was em-ployed to detect the cell apoptosis rate ;the expressions of caspase-3 and P53 proteins in Hela cells were determined by the Western blot analysis .Results Under the optical microscopy ,SeO2 generated the obvious influence on the cell growth morphology ,a large number of cells became rounded and shrunken ,and lost the normal form ,while the adherence cell number was evidently decreased and the proliferation was slowed down ;the MTT results showed that SeO2 markedly inhibited the cell proliferation and viability in a dose-dependent manner ,in which ,the cell apoptosis rates induced by the 0 ,1 .875 ,3 .750 ,7 .500 ,15 .000 and 30 .000 μmol/L con-centrations of SeO2 were 3 .12% ,30 .56% ,33 .42% ,37 .50% ,45 .43% and 69 .38% respectively ,which revealing the obviously in-creasing trend;the Western blot assay revealed that SeO2 could up-regulate the caspase-3 and P53 levels ,and reached the peak value at the concentration of 7 .500μmol/L .Conclusion SeO2 could induce the cervical cancer cell apoptosis possibly by up-regulating the expressions of caspase-3 and p53 in Hela cells .

关 键 词：骨关节炎 关节 软骨 蛋白多糖 YKL-40 

分 类 号：R684.3[医药卫生—骨科学]