纤克颗粒对博莱霉素致肺纤维化大鼠TNF-α细胞因子表达影响的研究

【作者】 王爽；

【导师】 宫晓燕；

【作者基本信息】 长春中医药大学 ， 中医内科学， 2010， 硕士

【摘要】 目的:观察纤克颗粒对肺纤维化大鼠不同时期TNF-α表达的影响,以证实纤克颗粒对肺纤维化的防治作用。方法:本研究采用博莱霉素诱导肺纤维化大鼠模型。将筛选清洁级Wistar大鼠108只,用随机数字表法分为6组,正常对照组,模型组,强的松组,纤克颗粒低剂量组,纤克颗粒中剂量组和纤克颗粒高剂量组,每组18只。普通专用饲料喂养。造模后第二天开始正常对照组、模型组按10ml/kg体重的标准灌服生理盐水,强的松组按5g/kg体重、纤克颗粒高、中、低剂量组分别按10g/kg、5g/kg、2.5g/kg体重灌服纤克颗粒水溶液。分别于连续给药的第7天、14天和28天后,腹主动脉取血,采用ELISA测定各时期血清中TNF-α含量。结果:大鼠TNF-α的表达,各时期模型组的表达均较高,较其它组有显著的差异(p<0.01),其中第7天达到高峰,随后逐渐下降,但仍高于其它组;强的松组与中药高、中、低剂量组的表达高于正常组,低于模型组。第7天TNF-α的表达从高到低的次序为中药低剂量组、强的松组、中药高剂量组、中药中剂量组;第14天TNF-α的表达的高低次序为中药低、高剂量组、强的松组、中药中剂量组;第28天TNF-α的表达的高低次序为中药低剂量组、强的松组、中药高、中剂量组。三个时期,强的松组与中药中剂量组相比有明显差异(p<0.05),与中药高、低剂量组相比无差异(p>0.05);中药高、低剂量组均与中剂量组存在显著差异(p<0.05或p<0.01)。结论:纤克颗粒可有效抑制大鼠体重的下降,较模型组相比均存在明显差异(p<0.05或p<0.01)。纤克颗粒中剂量可明显降低各时期肺纤维化大鼠TNF-α含量,与强的松组相比有较明显的差异(p<0.05),说明纤克颗粒对肺纤维化有较明显的防治作用,其作用机制可能与其抑制TNF-α的表达有关。更多还原

【Abstract】 Purpose: To observe XianKe Granule on pulmonary fibrosis in rats at different times of the effects of TNF-αand in order to confirm preventment and treatment of XianKe Granule on pulmonary fibrosis.Methods: In this study, bleomycin-induced pulmonary fibrosis in rats. Wistar rats of clean grade the filter 108, using random number table is divided into six groups, normal control group, model group, prednisone group, XianKe Granule low-dose group, middle-dose group and high-dose group, 18 rats in each group. Ordinary special feed were fed. Beginning the day after modeling the normal control group, model group, the standard weight according to 10ml/kg fed with normal saline, prednisolone group by 5g/kg weight, XianKe Granule of high, middle and low-dose groups respectively 10g/kg, 5g/kg, 2.5g/kg weight of XianKe Granule aqueous solution. Continuous administration, respectively, the 7th, 14th and 28th day, the abdominal aorta blood, using ELISA in serum were determined during the TNF-αlevels.Results: Rats’TNF-αexpression of various periods in model group were higher than other groups differ significantly(p<0.01), which reached the peak on the 7th day, then decreased gradually, but still were higher than others’; the expressions of prednisone group and XianKe Granule high, middle and low-dose group were higher than the normal group, lower than the model group.On the 7th day the expressions of TNF-αin order from high to low were XianKe Granule low-dose group, prednisone group, high-dose group and middle-dose group. On the 14th day the order from high to low were XianKe Granule low-dose group, high-dose group, prednisone group and middle-dose group.The order of the 28th day is the same as the 7th’s order. In various periods, prednisone group compared with the XianKe Granule middle-dose group were significantly different (p<0.05), and the other XianKe Granule group were not significant difference (p>0.05); high-and low-dose group and the middle dose group were significantly different (p<0.05 or p<0.01).Conclusion: XianKe Granule could inhibit weight declining, compared with the model group were significantly difference (p<0.05 or p<0.01). XianKe Granule middle-dose can significantly reduce the different periods of pulmonary fibrosis in rat TNF-αcontent, compared with the prednisone group were the obvious difference (p<0.05), and that shows XianKe Granule to pulmonary fibrosis have more obviously preventive and therapeutic effects, its mechanism may be related to inhibiting the expression of TNF-α.更多还原