骨关节炎大鼠模型软骨组织中PI3K/AKT信号通路功能与细胞凋亡的相关性研究

被引:35
作者
李晓燕
张艳
董春萍
吴贵福
机构
[1] 陕西省人民医院内分泌科
关键词
骨关节炎; PI3K/AKT; 白细胞介素; 凋亡; 自噬;
D O I
10.13210/j.cnki.jhmu.20170518.003
中图分类号
R-332 [医用实验动物学]; R684.3 [关节炎];
学科分类号
100220 [骨科学]; 100402 [劳动卫生与环境卫生学];
摘要
目的:研究骨关节炎(OA)大鼠模型软骨组织中脂酰肌醇3激酶(phosphatidylinositol 3kinase,PI3K)/蛋白激酶B(protein kinase B,Akt)信号通路功能与细胞凋亡的相关性。方法:选择清洁级雄性Wistar大鼠作为实验动物,并随机分为OA模型组和对照组;采用木瓜蛋白酶溶液与L-半胱氨酸关节腔内注射的方式建立OA模型。造模后第4周和第8周时,测定关节软骨中PI3K/AKT信号分子、炎症介质、细胞凋亡标志分子、细胞自噬标志分子的表达量。结果:OA组大鼠关节软骨组织中p-PI3K、pAKT的表达量显著低于对照组;OA组大鼠关节软骨组织中白介素(IL)-1β、IL-6、IL-17、IL-18、eIF4E、Bax、Caspase-3、mTOR、Beclin1、Atg5、Atg7的表达量显著高于对照组,且与p-PI3K、p-AKT的表达量呈负相关,Bcl-2的表达量显著低于对照组且与p-PI3K、p-AKT的表达量呈正相关。结论:骨关节炎大鼠模型软骨组织中PI3K/AKT信号通路功能的抑制能够促进软骨细胞的凋亡和自噬。
引用
收藏
页码:1452 / 1455
页数:4
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