糖痹康对糖尿病大鼠坐骨神经p38丝裂素活化蛋白激酶及血浆肿瘤坏死因子-α表达的影响  

Effects of Tangbikang on the Expressions of p38 MAPK of Sciatic Nerve and Plasma TNF-α in Diabetic Rats

作　　者：吕翠岩[1,2] 张胜容[1] 徐暾海[2] 孙文[2] 赵文景[1] 张竹华[1] 郑桂敏[1] 孟元[1] 王晖[1] 刘铜华[2] 

机构地区：[1]首都医科大学附属北京中医医院,北京100010 [2]北京中医药大学,北京100029

出　　处：《中国中医药信息杂志》2016年第3期67-69,共3页Chinese Journal of Information on Traditional Chinese Medicine

基　　金：国家科技重大专项-重大新药创制(2012ZX09102201-001);教育部博士点基金立项课题(20110013130001);北京中医药科技发展资金项目(JJ2015-06);北京中医药大学创新团队项目(2011-CXTD-19)

摘　　要：目的观察中药复方糖痹康对糖尿病大鼠坐骨神经p38丝裂素活化蛋白激酶(p38 MAPK)及血浆肿瘤坏死因子-α(TNF-α)表达的影响,探讨其神经保护及镇痛机制。方法 SD雄性大鼠60只,随机选取10只为正常组,其余大鼠采用高脂饲料和小剂量链脲佐菌素诱发2型糖尿病大鼠模型。成模后随机分为模型组、甲钴胺组和糖痹康低、中、高剂量组,每组10只。各给药组给予相应药物干预。16周后取大鼠一侧坐骨神经,放免法检测大鼠血浆TNF-α含量;Western blot检测大鼠坐骨神经p38、p-p38 MAPK蛋白表达。结果与正常组比较,模型组大鼠坐骨神经p38、p-p38蛋白表达及血浆TNF-α含量升高(P<0.05,P<0.01);与模型组比较,各给药组大鼠血浆TNF-α含量和坐骨神经p-p38蛋白表达显著降低(P<0.05,P<0.01),各给药组p38蛋白表达降低,但只有糖痹康高剂量组差异有统计学意义(P<0.05)。结论糖痹康下调大鼠坐骨神经p38、p-p38 MAPK蛋白表达和血浆TNF-α含量,可能是其糖尿病周围神经病变神经保护及镇痛作用靶点之一。Objective To explore the effects of Chinese herbal compound Tangbikang on the expressions of p38 MAPK of sciatic nerve and plasma TNF-α in diabetic rats. Methods Ten of the sixty male SD rats were selected randomly as normal group, and the rest were fed with high-fat diet and low-dosage STZ was used to induce type Ⅱdiabetic rat models. Model rats were randomly divided into model group, mecobalamine group and Tangbikang low-, medium-, and high-dosage groups, 10 rats in each group. Each medication group was intervened with relevant medicine. Rat unilaterals sciatic nerves were taken after 16 weeks. The content of TNF-α in plasma was determined by radioimmunoassay. Western blot method was used to detect the expressions of p38 and p-p38 MAPK protein of sciatic nerve. Results Compared with normal group, the expressions of p38 and p-p38 protein and content of TNF-αin model group significantly increase (P<0.05, P<0.01). Compared with the model group, the expressions of p-p38 protein and the content of TNF-α significantly decreased after medicine intervention in different doses Tangbikang groups and mecobalamin group (P<0.05, P<0.01). The expression of p38 protein in Tangbikang high-dose group significantly decreased (P<0.05), with statistical significance (P<0.05). Conclusion Tangbikang can reduce the expression of p38 and p-p38 MAPK protein of the rat sciatic nerve, and reduce the content of TNF-α protein in rat plasma, which may be one of the effective targets of neuroprotection and abirritation of diabetic peripheral neuropathy.

关 键 词：糖痹康 糖尿病周围神经病变 P38丝裂原活化蛋白激酶 肿瘤坏死因子-α 大鼠 

分 类 号：R285.5[医药卫生—中药学]