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作 者:吕浩然[1] 刘尚礼[2] 黄东生[2] 丁悦[2] 胡宝山[2] 叶伟[2]
机构地区:[1]广州医科大学附属第二医院骨外科,510260 [2]中山大学附属第二医院骨外科,广州510120
出 处:《中华实验外科杂志》2016年第1期195-197,共3页Chinese Journal of Experimental Surgery
基 金:国家自然科学基金(30471746)
摘 要:目的探讨Fas在退变的新西兰大白兔退变椎间盘终板凋亡中的表达及作用通路。方法10只新西兰大白兔纤维环损伤腰4—5及腰5~6作为实验组,10只作为对照组未行损伤。8周时分别行流式细胞仪、荧光共聚焦显微镜证实退变椎间盘终板中的细胞凋亡,同时取终板行实时定量聚合酶链反应(Real-time PCR)检测Fas、半胱氨酰天冬氨酸特异性蛋白酶-3(Caspase-3)的变化。结果流式细胞仪凋亡率[APF,(0.331±0.210)%]、荧光共聚焦显微镜凋亡率[APL,(0.801±0.127)%],与对照组比较差异有统计学意义(P〈0.01),证实了腰椎纤维环损伤后退变腰椎中软骨终板细胞的凋亡显著性增加;和对照组比较Fas(1.011±0.191)、Caspase-3(0.340±0.055)表达,差异有统计学意义(P〈0.01),均出现明显上调。结论腰椎退变中软骨终板的凋亡是可以通过Fas-Caspase-3途径进行。Objective To evaluate the role of disc degenerative disease (DDD) in rabbit endplate ceils apoptosis. Methods After being treated with annular laceration, DDD in rabbit were obtained, endplate cell apoptotic were analyzed by flow cytometry. Expression of fas was measured by the laser scanning confocal microscope (LSCM). Results Treated with annular laceration, the expression apoptotic trigger gene Fas ( 1.011 ± 0. 191 ) and Cysteinyl aspartate - specific protease - 3 ( Caspase - 3 ) (0. 340 ± 0. 055 ) increased (P 〈0. 01 ), as well as endplate cell was induced to apoptosis in the end. Compared with the control group, the percentage of apoptosis cells was increased significantly in experimental group apoptosis rate of flow cytometry (APF) (0. 331 ± 0. 210)%, apoptosis rate of laser confocal microscopy (APL) (0. 801 ± 0. 127 ) % ( P 〈 0. 01 ). Conclusion DDD can induce apoptosis of endplate cells, the endplate degeneration are throuth Fas -Caspase- 3 pathway.
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