兔肾缺血再灌注损伤时TNF-α、IL-6和bFGF的变化及当归的影响

目的:探讨当归对兔肾缺血再灌注损伤的防治作用及其机制。方法:健康成年日本大耳白兔25只, 随机均分为假手术对照(control)组、单纯缺血再灌注(IR)组和缺血再灌注+当归(RAS+IR)组。在肾缺血1h再灌注48h后取肾组织作电镜检查, 并测血清肌酐(Cr)、肾组织肿瘤坏死因子(TNF-α)、白细胞介素-6(IL-6)和碱性成纤维细胞生长因子(bFGF)含量。结果:IR组肾组织变性改变显著, RAS+IR组病变轻微;IR组Cr、TNF-α和IL-6含量显著高于control组(P<0.05, P<0.05和P<0.01);RAS+IR组上述指标显著低于IR组。IR组bFGF含量显著低于control组(P<0.01), RAS+IR组bFGF含量显著高于IR组(P<0.01)和control组(P<0.05).结论:当归具有防治肾IR损伤的作用, 其机制可能与其对TNF-α、IL-6和bFGF等细胞因子的调控有关。

Effects of Radix Angelicae Sinensis on changes of IL-6, TNF-α and bFGF in renal ischemia/reperfusion injury in rabbits

AIM: To determine the effect of Radix Angelicae Sinensis(RAS) on renal ischemia/reperfusion injury in rabbits and to explore its mechanism. METHODS: Twenty-five rabbits were divided randomly into the sham operated group(Control group), renal ischemia/reperfusion injury group(IR group) and RAS+IR group. At the time point of reperfusion 48 h after renal ischemia 1 h, the renal tissue were observed by electron-microscope and the contents of creatinine(Cr) in serum, tumor necrosis factor-α(TNF-α), interleukin-6(IL-6)and basic fibroblast growth factor(bFGF) in the renal tissue were measured. RESULTS: A remarkably degenerative changes in renal tissue were showed under electronmicroscope in IR group, but the changes in RAS+IR group were slight. The contents of Cr, TNF-α and IL-6 in IR group were higher than those in Control group, these parameters in RAS+IR group were lower than those in IR group, the difference between these groups was significant(P< 0.05 or P< 0.01). At the same time, the content of bFGF in IR group was lower than that in Control group(P< 0.01), while the content of bFGF in RAS+IR group was higher than that in IR group(P< 0.01) and Control group(P< 0.05). CONCLUSION: RAS has an effect of alleviating the renal ischemia/reperfusion injury by modulating the production or release of TNF-α, IL-6 and bFGF.