电针与饮食调整对营养性肥胖大鼠胰岛素抵抗的影响

目的:研究电针与饮食调整对营养性肥胖大鼠胰岛素抵抗(insulin resistance,IR)的影响,阐明针剌、饮食调整在减肥中的作用。方法:采用高脂饮食建立营养性肥胖大鼠模型。造模成功的肥胖大鼠再随机分为高脂饮食组、普食组、高脂饮食加电针组、普食加电针组,另设正常对照组,各组分别处理15d。实验结束后检测大鼠肥胖指标、血脂水平,血清肿瘤坏死因子-α(tumor necrosis factorα,TNF-α)及血清空腹胰岛素(fasting insulin,FINS)水平。结果:与高脂饮食组比较,高脂饮食加电针组和普食加电针组大鼠摄食量、体质量以及内脏脂肪质量均明显减少(P<0.05);普食加电针组血清总胆固醇(total cholesterol,TC)、游离脂肪酸(free fatty acid,FFA)含量及IR指数均显著降低(P<0.01),TNF-α和FINS水平亦显著降低(P<0.05)。结论:电针结合饮食调整能降低肥胖大鼠异常升高的血清TNF-α、FINS,改善胰岛素抵抗状态。

Effect of electroacupuncture and diet adjusting on insulin resistance in rats with nutrition obesity

OBJECTIVE: To study the effects of electroacupuncture and diet adjusting on insulin resistance in rats with nutrition obesity, and the role of electroacupuncture and diet adjusting in the treatment of obesity. METHODS: Obesity was induced in rats by high-fat diet. Rats with nutrition obesity were randomly divided into high-fat diet (HD) group, high-fat diet plus electroacupuncture (HA) group, normal diet (ND) group and normal diet plus electroacupuncture (NA) group, with another group of SD rats as normal control (NC). After 15 days, all the rats' body weight and length were measured, the Lee's index was calculated, and the levels of total cholesterol (TC), triglycerides (TG), free fatty acid (FFA), fasting plasma glucose (FPG), fasting insulin (FINS) and tumor necrosis factor-alpha (TNF-alpha) were detected. RESULTS: Compared with the HD group, food intake, body weight and viscera fat weight of the rats with nutrition obesity in the HA group and the NA group were markedly reduced (P<0.05). The levels of blood serum TC, FFA and IR index in the NA group were obviously lower than those in the HD group (P<0.01). The levels of TNF-alpha and FINS in the NA group were lower than those in the HD group (P<0.05). CONCLUSION: Electroacupuncture plus diet adjusting can decrease the levels of serum TNF-alpha and FINS of the obesity rats, and improve the state of insulin resistance.