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高尿酸血症合并高脂高糖大鼠模型中医证候特点的实验研究
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摘要
目的:
     为了探讨高尿酸血症动物模型的中医病理及证候特点,采用腺嘌呤灌胃和高脂高糖饲料喂饲的方法复制高尿酸血症大鼠模型,分别以不同中医治法方药——四妙散、二陈汤、血府逐瘀汤、四君子汤、肾气丸进行反证,进而为高尿酸血症的中西医结合防治和药物开发提供基础研究。
     方法:
     将56只清洁级成年SD大鼠按体质量(体重200-230g)随机分为7组,即正常组、模型组、四妙散组、二陈汤组、血府逐瘀汤组、四君子汤组、肾气丸组。正常组给予正常饮食,其余各组均以高脂高糖饲料喂养5周。喂养3周后,模型组及各药物治疗组上午固定时间以腺嘌呤200mg/kg灌胃,正常组给予等量蒸馏水灌胃;各药物组下午固定时间分别按组别给予5种方药,模型组和正常组给予等量蒸馏水灌胃,连续2周。所有动物给药体积均为10ml/kg。末次给药后1h,动物称重后腹腔注射戊巴比妥钠(45mg/kg)麻醉,腹主动脉采血,检测血清尿酸(UA)、甘油三酯(TG)、高密度脂蛋白(HDL)、胰岛素(INS)、血糖(GLU)、肌酐(Cr)、尿素氮(BUN)含量;光镜下观察大鼠肾组织病理形态变化;测定肝脏XOD含量及采用逆转录—聚合酶链反应(RT-PCR)法检测XOD-mRNA变化。
     结果:
     (1)模型组较正常组UA、BUN、Cr、TG、GLU、HDL、肝脏XOD均有显著升高(P<0.05),模型组较正常组INS显著降低(P<0.05),①各药物组UA与模型组比较显著降低(P<0.05),四妙散组与血府逐瘀汤组、二陈汤组之间无明显差异,且这3组疗效好于肾气丸组与四君子汤组,肾气丸组与四君子汤组之间无明显差异;②四妙散组与模型组BUN比较显著降低(P<0.05);③四妙散、二陈汤、四君子汤组、肾气丸组与模型组Cr比较均显著降低(P<0.05),四妙散组、二陈汤组、肾气丸组之间无明显差异;④各药物组TG与模型组比较均显著降低(P<0.05),各药物组之间比较无明显差异;⑤四妙散组、二陈汤组、血府逐瘀汤组、四君子汤组与模型组GLU比较均显著降低(P<0.05),这4组之间无明显差异;⑥各药物组与模型组HDL比较均无明显差异;⑦四妙散组及血府逐瘀汤组与模型组INS比较显著升高(P<0.05),这2组之间无明显差异;⑧四妙散组、二陈汤组、血府逐瘀汤组、四君子汤组与模型组肝XOD比较显著降低(P<0.05),四妙散组、二陈汤组、四君子汤组之间无明显差异。
     (2)光镜观察四妙散、血府逐瘀汤、肾气丸均能不同程度改善大鼠肾组织受损情况,但是四妙散组肾脏结构比较完整,细胞排列比较规则,尿酸盐减少,说明四妙散可以减少尿酸盐的生成,对肾脏起到了较强的保护作用。
     (3)肝组织XOD-mRNA表达显示模型组与正常组之间有显著性差异(P<0.05),各药物组与模型组均有显著性差异(P<0.05),四妙散组、二陈汤组、血府逐瘀汤组无明显差异,且3组XOD-mRNA表达均低于四君子汤组及肾气丸组,四君子汤组与肾气丸组无明显差异。
     结论:
     1.采用腺嘌呤200mg/kg灌胃同时予高脂高糖饮食可以成功制备高尿酸血症、高脂高糖复合大鼠模型。
     2.①四妙散可以降低血清UA、TG、GLU、BUN、Cr含量,抑制肝脏XOD活性、抑制XOD-mRNA表达,升高INS含量;②二陈汤可以降低血清UA、TG、GLU、Cr含量,抑制肝脏XOD活性、抑制XOD-mRNA表达;③血府逐瘀汤可以降低血清UA、TG、GLU含量,抑制XOD-mRNA表达,升高INS含量;④四君子汤可以降低血清UA、TG、GLU、Cr含量,抑制肝脏XOD活性、抑制XOD-mRNA表达;⑤肾气丸可以降低血清UA、TG、Cr含量,抑制XOD-mRNA表达。
     3.此种方法复制出的高尿酸血症动物模型存在不同程度的肾虚、脾虚、湿热、痰浊、瘀血等病理变化,而四妙散在8个指标中显示出突出的治疗作用,在改善肾功能、抑制肝脏XOD活性、保护肾组织等方面作用最为显著,说明“湿热”可能是该模型的主要病理特点。
Objective:
     To explore the pathological features and the characteristics of TCM syndrome in rat model of hyperuricemia,the adenine was lavaged and high fat and high sugar food was fed to copy the rat model of hyperuricemia,and using different prescriptions Simiaosan,Erchentang,Xuefuzhuyu-tang,Sijunzitang,Shenqiwan in the treatment methods to reverse.To provide basic research for prevention/treatment and drug development of Chinese and Western medicine.
     Methods:
     56adult Clean-level SD rats (weight 200-230g) were randomly divided into seven groups.They were normal control group,model control group,simiaosan treatment group,Erchentang treatment group,Xuefuzhuyutang treatment group,Sijunzitang treatment group and Shenqiwan treatment group.The normal control group was given normal diet, and the other groups were fed high-fat and high-sugar diets for five weeks.After feeding three weeks,the model control group and the drug treatment groups were fed adenine 200mg/kg by a fixed time in the morning,but the normal control group was fed with equal distilled water.In the afternoon, the drug treatment groups were respectively fed with the five kinds of prescriptions,the model control group and the normal control group were fed with equal distilled water by a fixed time.All animals were administered volume 10ml/kg.After 1 hour of the last administration,animals were taken their quality and anesthetized by sodium pentobarbital(45mg/kg) by intraperitoneal.Then took the abdominal aortic blood for detecting the levels of the serum uric acid(UA),triglycerides(TG),high-density lipoprotein(HDL),insulin(INS),glucose(GLU),creatinine(Cr),blood urea nitrogen(BUN).The pathological changes of kidney tissues were observed by light microscopy.The liver homogenate was used to detect the concentration of xod,and reverse transcription-polymerase chain reaction (RT-PCR) was used to detect changes in XOD-mRNA.
     Results:
     (1)①The levels of HDL,TG,GLU,BUN,Cr,liver XOD were significantly different(P<0.05) between the model group than the normal group.The level of UA was significantly lower(P<0.05) in each drug group than the model group,but there was no significant difference among Simiaosan,Xuefuzhuyutang and Erchentang groups.And this three groups were better than Shenqiwan and Sijunzitang groups.The Shenqiwan group and Sijunzitang group had no significantly difference.②The level of BUN was significantly lower(P<0.05) in Simiaosan than the model group.③The level of Cr was significantly lower(P<0.05) in Simiaosan,Erchentang,Sijunzitang,Shenqiwan groups than in the model group,and there was no significant difference among Simiaosan,Erchentang and Shenqiwan groups.④The level of TG was significantly lower(P<0.05) in each drug group than the model group,and there was no significant difference in drug groups.⑤The level of GLU was significantly lower(P<0.05) in Simiaosan,Erchentang,Xuefuzhuyutang,Sijunzitang group than the model group,and there was no significant difference in this four drug groups.⑥The level of HDL in each drug group had no significant difference with the model group.⑦The level of INS was significantly higher in Simiaosan,Xuefuzhuyutang group than the model group,and there was no significant difference in this two drug groups.⑧The level of liver XOD was significantly lower(P<0.05) in Simiaosan,Erchentang,Sijunzi-tang group than the model group,and there was no significant difference in Simiaosan,Erchentang and Sijunzitang group.
     (2) Optical observations indicate that Simiaosan,Xuefuzhuyutang and Shenqiwan can be improved to some extent damage of renal tissue of the rats,but the renal structure of simiaosan group was relatively complete and the arrangement of cells were rules,and the uric acid salt was reduced,so Simiaosan can reduce the formation of urate,plays a strong protective effect in kidney.
     (3) The XOD-mRNA expression in liver tissue of model group and normal group showed a significant difference(P<0.05),each drug group and model group were significantly different (P<0.05),Four Simiaosan group,Erchen group and Xuefuzhuyutang group was no significant difference,and the XOD-mRNA expression in the three groups were lower than the Sijunzitang group and Shenqiwan group,Sijunzitang group and Shenqiwan group was no significant difference.
     Conclusion:
     (1) Using adenine 200mg/kg lavage and high-fat and high-sugar diets can be successful preparation high uric acid,fatty high sugar compound model of rats.
     (2)①Simiaosan can reduce the content of serum of UA,TG,GLU,Cr,BUN inhibit the activity of liver XOD and XOD-mRNA expression,elevated the content of serum of INS.②Erchentang can reduce the content of serum of UA,TG,GLU,Cr inhibit the activity of liver XOD and XOD-mRNA expression,elevated the content of serum of INS.③Xuefuzhuyutang can reduce the content of serum of UA,TG,GLU and inhibited the XOD-mRNA expression,elevated the content of serum of INS.④Sijunzitang can reduce the content of serum of UA,TG,GLU,Cr inhibit the activity of liver XOD and XOD-mRNA expression,elevated the content of serum of INS.⑤Shenqiwan can reduce the content of serum of UA,TG,Cr and inhibited the XOD-mRNA expression,elevated the content of serum of INS.
     (3) This method to replicate animal model of hyperuricemia varying degrees of kidney,spleen, damp heat,phlegm,blood stasis and other pathological changes.Simiaosan scattered eight indicators of treatment showed prominent role in the improvement of renal function,inhibit the activity of liver XOD.Protect the kidney is the most significant aspects.So the "heat" may be the main pathological features of the model.
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