摘要:
目的 观察活血通络方对缺血性肾病早期大鼠的肾组织及其单核细胞趋化蛋白1(MCP-1)表达的影响,探讨其防治缺血性肾病早期病变的机制.方法 采用双侧肾动脉不全结扎术导致的双侧肾动脉狭窄建立缺血性肾病动物模型.将60只SD雄性大鼠按随机数字表法随机分为假手术组、模型组、预防组、药物组,每组各15只,模型组、药物组及预防组均行双侧肾动脉不全结扎术,假手术组仅分离双侧肾动脉但不结扎.假手术组(术后次日灌胃0.9%氯化钠注射液3ml/只,1次/d,共灌胃21d)、模型组(术后次日灌胃0.9%氯化钠注射液3 ml/只,1次/d,共灌胃21 d)、预防组[术前3d起灌胃活血通络方10.85g/(kg·d),稀释成3 ml/只,用量为成人用量单位体质量的7倍,1次/d,共灌胃24 d]、药物组[术后次日起灌胃活血通络方10.85 g/(kg·d),稀释成3 ml/只,用量为成人用量单位体质量的7倍,1次/d,共灌胃21 d]采用苏木精-伊红(HE)染色及Masson染色,光镜下观察肾组织病理学变化,并对各组进行病理评分比较;应用免疫组织化学检测各组大鼠肾组织中MCP-1的表达.结果 HE染色及Masson染色结果显示模型组、预防组、药物组大鼠肾组织与假手术组比较都有不同程度的炎症及纤维化病灶,预防组、药物组与模型组比较,肾小球硬化指数、肾小管间质损伤程度和肾组织MCP-1表达均明显降低,分别为(0.39±0.18)%、(0.83±0.12)%比(1.88±0.21)%;(1.21±0.12)分、(1.71±1.29)分比(2.65±1.23)分;313 ±8、483±12比743±9,均P<0.01,且预防组结果优于药物组(P<0.01).结论 活血通络方可能通过减少MCP-1的表达,从而防治缺血性肾病的早期病变.%Objective To observe the impact of Huoxue Tongluo Formula on renal tissue and monocyte chemotactic protein 1 (MCP-1) expression in the early ischemic nephropathy rats and explore the mechanism of prevention and treatment of early ischemic nephropathy.Methods The animal model of ischemic nephropathy was established using bilateral renal arterial stenosis induced by incomplete ligation of bilateral renal arteries.60 SD male rats were randomized into a sham-operation group,a model group,a prevention group and a medication group with 15 rats in each group.The model group,the prevention group and the medication group all took the Incomplete ligation of bilateral renal artery.The sham-operation group just had the renal artery separated,but did not have the operation.The prevention group was given the Huoxue Tongluo Formula by gavage 3 days before operation[10.85 g/ (kg · d),3 ml for each rat] ; the medication group was given the equivalent medicine on the second day after operation; the sham-operation group and model group were given 0.9% sodium chloride injection (3 ml each rat).The materials were collected within 21 days after modeling.The pathological changes in renal tissues were observed.The MCP-1 expression in renal tissue was detected by immunohistochemisty.Results HE staining and Masson staining showed the inflammatory disorders and fibrosis foci had more changes in the model group,the prevention group,the medication group than in the sham-operation group.Compared with the model group,glomerular sclerosis index (CSI) 、tubule interstitial score(T IS) and the MCP-1 expression were reduced significantly in the prevention group and the medication group[(0.39 ±0.18)%,(0.83 ±0.12)% vs (1.88 ±0.21)% ;(1.21 ±0.12)score,(1.71 ± 1.29) score vs (2.65 ± 1.23) score,313 ±8,483 ± 12 vs 743 ±9,all P<0.01].Conclusion Huoxue Tongluo Formula can prevent and treat early ischemic nephropathy via reducing the expression of MCP-1.