超声对软骨细胞凋亡、caspase-8和caspase-3表达的影响

被引:8
作者
郭华 [1 ,2 ]
夏璐 [1 ,2 ]
周君 [1 ,2 ]
陈世菊 [1 ,2 ]
何成奇 [1 ,2 ]
机构
[1] 四川大学华西医院康复医学科
[2] 四川省康复医学重点实验室
关键词
组织构建; 软骨组织构建; 骨关节炎,膝关节; 软骨细胞; 超声; 细胞凋亡; caspase-3; caspase-8; 基因;
D O I
暂无
中图分类号
R684.3 [关节炎];
学科分类号
100220 [骨科学];
摘要
背景:超声治疗能够缓解疼痛,改善膝骨关节炎患者的运动功能,但目前关于超声治疗的文献缺乏一致性。目的:进一步验证超声治疗的膝骨关节炎有效性。方法:24只兔子随机分为3组,正常组不干预;模型组兔行前交叉韧带离断诱导膝骨关节炎,不接受任何治疗;超声组兔建模后接受超声波治疗10 min/次,1次/d,0.3 W/cm2,1 MHz,共治疗10次。采用苏木精-伊红染色进行兔关节软骨组织学观察,运用免疫印迹和RT-PCR技术检测兔软骨中的caspases3和caspases8的表达,TUNEL技术检测兔膝骨关节软骨细胞凋亡率。结果与结论:正常兔软骨组织软骨细胞呈柱状整齐的排列,模型中软骨层变薄,软骨细胞排列无序而少。超声治疗后软骨细胞重新排列,趋于整齐,细胞数增加。模型组为膝骨关节炎模型;与正常组比较,模型组和超声组改良Mankin评分较高,模型组和超声组软骨细胞凋亡指数更高,模型组高于超声组。与正常组比较模型组和超声组caspase-3和caspase-8表达较高,超声治疗后两项指标表达下降。结果表明,超声可以改善软骨组织结构、降低caspase-3、caspase-8的表达,降低软骨细胞凋亡。提示超声治疗膝骨关节炎是有效的。
引用
收藏
页码:6580 / 6586
页数:7
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