Anti-inflammatory effects of an herbal medicine (Xuan-Ju agent) on carrageenan- and adjuvant-induced paw edema in rats

Xuan-Ju agent is an herbal formula containing aqueous extract of Formica fusca, Herba epimedii, Fructus cnidii, and Fructus lycii, all of which are reputed for their beneficial effects in the treatment of the immunodeficient diseases such as rheumatoid arthritis. We performed a study on the anti-inflammatory effects of this agent using carrageenan- and adjuvant-induced paw edema in rats. Xuan-Ju agent showed a marked inhibitory effect on edema in two models of inflammation in rats, at the dose of 0.20, 0.40 and 0.80g/kg. Based on this study, Xuan-Ju agent is considered to be a potentially useful drug suitable for further evaluation for rheumatoid arthritis.     

基于代谢组学的苍耳子配伍黄芪后减毒作用研究

目的:利用代谢组学技术,研究苍耳子及其配伍黄芪后,大鼠肝脏组织病理、血浆生化指标、尿液代谢图谱的变化,探讨黄芪配伍苍耳子对肝脏的减毒作用。方法:大鼠30只随机分为正常对照组、苍耳子组(21.0g/kg)、黄芪配伍组(31.5g/kg),灌胃给药,连续给药28d,收集大鼠24h尿液,测定尿液UPLC-TOF-MS图谱;肝门取血做生化检测;取肝脏做组织病理学检查。结果:给药28d,苍耳子组及黄芪配伍组较对照组ALT、AST均升高,肝组织出现病理改变;黄芪配伍组较苍耳子组ALT、AST降低,肝组织病变明显减轻。苍耳子组、黄芪配伍组尿液代谢物表型的聚类分布均偏离对照组,但黄芪配伍组尿液代谢物表型的聚类分布位于对照组与苍耳子组之间。结论:苍耳子(21.0g/kg)长期给药可造成肝功能的明显损害,配伍黄芪后(31.5g/kg)具有一定的减毒作用。     

The anti-depressant effect of Nelumbinis semen on rats under chronic mild stress induced depression-like symptoms

Nelumbinis Semen is a well-known traditional herbal medicine frequently used in treatment of depression in many Asian countries. In this study, its anti-depression effects in rats were investigated by comparing the test results of those treated with Nelumbinis Semen to those treated with other herbal anti-depressants, including Rehmanniae Radix Preparat, Corni Fructus, Lycii Fructus, Pinelliae Rhizoma and Hypericum Perforatum. In order to induce depression-like symptoms, the animals were placed under chronic mild stress in the form of overnight illumination for 2 consecutive days. They were treated with the respective herbal extract and forced swimming tests were conducted afterwards. The anti-depression effects of each extract were then evaluated based on a measured index, which consisted of struggling time, first latency and first rest duration. These test results show that Nelumbinis Semen provides greater anti-depression effects than the other herbal extracts. Specifically, only the rats treated with Nelumbinis Semen showed significant increases in struggling time (43.9%, p < 0.005, p = 0.0037) and in first latency time (90.2%, p < 0.05, p = 0.0116). However, the first rest duration for Nelumbinis Semen treated rats was not significantly different from the other rats. It appears that Nelumbinis Semen provides even greater anti-depression effects than Hypericum Perforatum (commonly referred to as St. John's Wort, perhaps the most widely used natural antidepressant today). The anti-depression effects of Nelumbinis Semen might be due to the modulation of the amount of neurotransmitters involved in depression.     

Anti-hyperalgesic and anti-inflammatory effects of the modified Chinese herbal formula Huo Luo Xiao Ling Dan (HLXL) in rats

Chinese herbal medicine has been used for thousands of years in China and other Asian countries to treat a variety of inflammatory diseases. The classic Chinese herbal formula, Huo Luo Xiao Ling Dan (HLXL) is commonly used in traditional Chinese herbal medicine for the treatment of joint pain and other symptoms of arthritis. The present study is an investigation of the effects of a modified HLXL extract on persistent hyperalgesia and edema in rats with peripheral inflammation. Inflammation was induced by injecting complete Freund's adjuvant (CFA) into one hind paw. Four dosages of the extract were compared to a vehicle control. Each was administered intragastrally (i.g.) daily for seven days beginning one day before CFA. Hyperalgesia was assessed using a paw withdrawal latency (PWL) test and edema was determined by measuring paw thickness at pre-CFA and 2 hours, 24 hours, and 5 days post-CFA. Immunohistochemistry was performed 2 hours post-CFA to determine spinal Fos protein expression. Adverse effects of the extract were monitored by observing the animals closely for unusual behavioral changes. Compared to the control, HLXL at the two lower dosages (0.575 g/kg and 1.15 g/kg) were effective in the later stage (day 5) of inflammatory hyperalgesia and edema, while the two higher dosages (2.3 g/kg and 4.6 g/kg) alleviated early stage hind paw inflammation and hyperalgesia and facilitated recovery from paw edema and hyperalgesia during the late stage. HLXL at 2.30 g/kg significantly suppressed Fos expression in laminae I-II, III-IV and V-VI ipsilaterally and in III-IV contralaterally. No significant signs of toxicity or adverse effects were observed. The data suggest that HLXL dosage-dependently attenuates CFA-induced inflammation and hyperalgesia, at least in part by inhibiting noxious transmission at the dorsal horn of the spinal cord.     

不同含碘剂量中药复方对AIT大鼠甲状腺组织超微结构及病理形态学影响的研究

目的:观察不同剂量含碘中药(海藻、昆布)复方对实验性自身免疫性甲状腺炎(AIT)大鼠甲状腺自身抗体、甲状腺组织超微结构及病理形态学的影响,探讨其作用机制;筛选中药复方中含碘中药的最佳剂量。方法:选用普通级SD雌性大鼠75只,取15只为正常组,其余60只进行造模,造模完成后分成4组:模型组、含碘中药低剂量组、中剂量组、高剂量组。实验结束称取各组大鼠体重,取大鼠双侧甲状腺,计算每100g大鼠体重的甲状腺mg数,作为甲状腺的重量指数(mg/100g);酶联免疫法检测各组大鼠甲状腺抗体水平;电镜下观察各组大鼠甲状腺滤泡上皮细胞超微结构变化;光镜下观察各组大鼠甲状腺组织病理形态学变化。结果:含碘中药各治疗组与模型组相比,大鼠甲状腺重量指数明显降低(P0.01),甲状腺自身抗体水平均降低(P0.01);治疗组组间比较,高、中剂量组优于低剂量组(P0.05),高、中剂量组之间无明显差异(P0.05);各治疗组甲状腺组织病理损伤较模型组减轻。结论:含碘中药复方具有缓解AIT大鼠甲状腺肿,降低甲状腺自身抗体水平,减轻甲状腺组织病理损伤的作用;含碘中药海藻、昆布的最佳剂量为20～30g。     

降压乐胶囊对高血压模型大鼠血压等的影响

目的:观察降压乐胶囊的作用机理。方法:采用大鼠尾拍测压法等。将自发性高血压 SHR 大鼠。根据血压水平随机分组,以0.5、1.0、1.5g/kg 剂量的降压乐胶囊灌胃给予大鼠1个月。结果:降压乐胶囊能明显对抗 SHR 大鼠的血压升高,与模型组大鼠血压比较有显著性差异。能够降低甘油三酯,此作用优于东方情胶囊。对血液粘度及纤维蛋白原有降低作用。有一定的降低血小板粘附率和血小板聚集数的作用。且对大鼠体重、血象、心、肝、肾功能无明显影响。结论:降压乐胶囊能够有效的对抗 SHR 大鼠的血压升高。     

补骨脂对去卵巢大鼠雌激素样作用研究

目的:观察补骨脂对去卵巢大鼠的雌激素样作用。方法:SD雌性大鼠行双侧卵巢摘除术(假手术组只切除卵巢附近脂肪),随机分为去卵巢模型组、补骨脂组(0.59 g.kg)、补佳乐组(0.8 g×10-4 g·kg-1)和假手术组,ig 4周后分别观察大鼠肛温、子宫和肾上腺系数,ELISA法检测血清雌二醇(E2)、黄体生成素(LH)、促卵泡生成素(FSH)水平。结果:模型组大鼠与假手术组比较肛温升高,子宫和肾上腺萎缩,血清中E2水平下降,LH,FSH水平升高。与模型组比较,补骨脂组、补佳乐组大鼠的肛温明显降低(P<0.01),子宫和肾上腺系数明显提高(P<0.05,P<0.01),血中E2浓度明显升高,LH,FSH水平明显降低(P<0.01)。结论:补骨脂能降低去卵巢大鼠的肛温,增加子宫和肾上腺系数,升高血中E2水平并降低LH,FSH水平,表明补骨脂对去卵巢大鼠有雌激素样作用。     

Herb-drug interaction of Evodia rutaecarpa extract on the pharmacokinetics of theophylline in rats

The extract of Evodia rutaecarpa fruit and its preparation were used for the treatment of gastrointestinal disorders and headache. To assess the possible herb-drug interaction, the ethanol extract of Evodia rutaecarpa fruit (1 and 2 g/kg/day, p.o.) and the herbal preparation Wu-Chu-Yu-Tang (1 and 5 g/kg/day) were given to rats daily for three consecutive days and on the fourth day theophylline was administered (2 mg/kg, i.v.). Theophylline concentration in blood was measured by a microdialysis coupled to a liquid chromatographic system. Pharmacokinetic data were calculated by noncompartmental model. The results indicate that the theophylline level was significantly decreased by the pretreatment with the extract of Evodia rutaecarpa and herbal preparation Wu-Chu-Yu-Tang with dose-related manner. It is suggested that the herb-drug interaction may occur through the induction of the metabolism of theophylline.     

In vitro antidiabetic activities of five medicinal herbs used in Chinese medicinal formulae

Fructus Corni, Fructus Schisandrae Chinensis, Poria, Rhizoma Alismatis and Rhizoma Dioscoreae are commonly used in traditional Chinese medicine for diabetes treatment. They are also the component herbs of an antidiabetic foot ulcer formula with demonstrated clinical efficacy. Although some of these herbal extracts were previously shown to possess in vivo antidiabetic effects (i.e. lowering blood glucose levels), the underlying mechanisms remain elusive. The objective of this study is to investigate the possible antidiabetic mechanisms of these individual herbs, using a systematic study platform which includes four in vitro tissue models: glucose absorption into intestinal brush border membrane vesicles (BBMV), gluconeogenesis by rat hepatoma cell line H4IIE, glucose uptake by human skin fibroblasts cell line Hs68 and mouse adipocytes 3T3-L1. All tested herbs showed significant in vitro antidiabetic effects in at least two models. Fructus Schisandrae Chinensis, Poria, Rhizoma Alismatis and Rhizoma Dioscoreae showed significant inhibitory effects in the BBMV glucose uptake assay. All tested herbs showed significant stimulatory effects to the glucose uptake of Hs68 and 3T3-L1 cells, except Poria and Rhizoma Dioscoreae which were not effective to Hs68 and 3T3-L1 respectively. However, none of the tested herbs inhibited hepatic gluconeogenesis. In conclusion, the five herbs exhibited distinct antidiabetic mechanisms in vitro and hence our investigations provided scientific evidence to support the traditional usage of these herbs for diabetic treatment in medicinal formulae.     

仲景方中枳实用药剂量古今折算研究

采用文献考证和实物测量的方法对仲景方中枳实进行了系统研究。从诸多本草文献的记载和相关附图的研究发现,仲景方所用枳实并非今之所用枳实,而是种属为芸香科植物枸橘的枳壳。随后对选用产自河南驻马店的枸橘枳壳作为仲景方枳实的实测药材进行了实物测量,得出枸橘枳壳一枚为12g。结合现代道地枳实、枳壳实测结果的对比,并运用所得实测结果对小承气汤全方剂量配伍比例的分析,认为仲景方中枳实为枸橘枳壳,其一枚的剂量为12g是合理的。该研究为今后建立仲景方的药物剂量和配伍比例标准提供研究基础。     

栀子对大鼠肝毒性的实验研究

目的：探讨栀子不同化学部位的肝毒性作用。方法：灌胃给药3 d后,观察大鼠外观、行为及体重变化；称量肝脏重并计算肝指数；测定大鼠血清丙氨酸氨基转移酶（ALT）、天冬氨酸氨基转移酶（AST）活性及总胆红素（TBIL）含量；对肝脏组织进行光镜的病理学观察。结果：3.08 g·kg^-11的水提物、1.62 g·kg^-1的醇提物、0.28 g·kg^-1的栀子苷导致肝重增加,肝指数增大,与空白比较P<0.05,P<0.001；ALT,AST活性增高,TBIL含量增加,与空白比较P<0.05,P<0.001；光镜下可见明显的肝细胞肿胀、坏死,大量炎症细胞浸润等形态改变。结论：栀子水提物、醇提物、栀子苷具有肝毒性,栀子苷是栀子肝毒性的主要物质基础。     

The Effects of an Antiosteoporosis Herbal Formula Containing Epimedii Herba,Ligustri Lucidi Fructus and Psoraleae Fructus on Density and Structure of Rat Long Bones Under Tail‐Suspension,and its Mechanisms of Action

An innovative anti‐osteoporosis herbal formula containing Epimedii Herba, Ligustri Lucidi Fructus and Psoraleae Fructus (ELP) has been previously shown its bone protecting effects in ovariectomized osteoporotic rats and also in post‐menopausal osteopenic women. This study aimed to investigate the efficacy of ELP against bone loss during physical inactivity or weightlessness. A hindlimb unloading tail‐suspended rat model was used for studying the effects of ELP on bone mineral density (BMD) and bone micro‐architecture. For in vitro mechanistic studies, rat mesenchymal stem cells (MSCs) and mouse macrophage cells (RAW264.7) were used for studying the effects of ELP on osteogenic/adipogenic differentiations and osteoclastogenesis, respectively. Our data illustrated that ELP had a significant preventive effect against bone loss induced by tail‐suspension (TS) at day 28 (p < 0.01) as indicated in the reduction in BMD loss and the preservation of bone micro‐architecture. ELP could significantly promote the osteogenesis and suppress the adipogenesis (p < 0.05) in MSCs. Besides, significant inhibition of osteoclast formation (p < 0.01) was found in ELP‐treated RAW264.7 cells upon receptor activator of nuclear factor kappa‐B ligand induction. Our study presents the first scientific evidence that ELP had a significant preventive effect against bone loss induced by TS through the actions of enhancing osteogenesis, suppressing adipogenesis and osteoclastogenesis. Copyright © 2012 John Wiley & Sons, Ltd.     

山楂饮灌胃联合愈疡生新方灌肠对小鼠UC的治疗作用

目的:观察山楂饮灌胃联合愈疡生新方灌肠对小鼠免疫性溃疡性结肠炎疾病活动指数、体重变化、结肠长度、结肠炎症及溃疡愈合的作用和量效关系,为临床应用提供实验及理论依据。方法:选择100只昆明雄性小鼠,随机分为5组,即正常组、模型组、山楂饮联合愈疡生新方高剂量组(高剂组)、山楂饮联合愈疡生新方低剂量组(低剂组)、柳氮磺胺吡啶(SASP)组。除正常组外,其余各组均制作免疫性溃疡性结肠炎实验模型。于造模后第2 d开始给药,高剂组小鼠给予山楂饮0.01 g.g-1体重灌胃,愈疡生新方0.008 g.g-1体重灌肠,1次/日;低剂量组小鼠给予山楂饮0.005 g.g-1,愈疡生新方0.004 g.g-1体重灌肠,1次/日;柳氮磺胺吡啶组给予1%SASP灌肠和灌胃各0.002 g.g-1体重,1次/日;正常组、模型组给予生理盐水灌肠和灌胃各0.02 mL.g-1体重,1次/日。连续给药治疗21 d后,观察各组小鼠的疾病活动指数与体重变化。处死小鼠,取全段结肠,称结肠湿重,测肠重指数,观察结肠溃疡及炎症反应情况。结果:小鼠疾病活动指数、体重变化、各组小鼠结肠长度情况、各组小鼠结肠溃疡及炎症反应情况高剂组、低剂组、柳氮磺胺吡啶组明显优于模型组,且高剂组明显高于低剂组、柳氮磺胺吡啶组。结论:山楂饮灌胃联合愈疡生新方灌肠能明显降低小鼠免疫性溃疡性结肠炎的疾病活动指数和溃疡及炎症评分,减轻结肠充血、水肿、增厚等炎性症状,显著改善小鼠免疫性溃疡性结肠炎的结肠缩短程度;具有促进小鼠溃疡愈合、改善炎症反应的作用。其疗效与药量呈正相关。     

牛蒡子对运动训练大鼠睾酮及相关激素含量和抗运动疲劳能力的影响

目的:研究牛蒡子对运动训练大鼠睾酮及相关激素含量和抗疲劳能力的影响。方法:以大强度耐力训练大鼠为模型,55只42 d龄雄性Wistar大鼠为对象,随机分为5组:静止组(C组)、运动组(M组)、运动+低剂量牛蒡子组(AML组),运动+中剂量牛蒡子组(AMM组),运动+高剂量牛蒡子组(AMH组),每组10只(剔除不符合实验要求的大鼠5只)。每天灌胃ig给药1次,牛蒡子组剂量分为0.5,1,3 g·kg-1,ig体积为5 m L·kg-1,C,M组ig等量生理盐水。42 d力竭游泳训练后,测定体重、力竭游泳时间及血睾酮等生化指标。结果:体重,运动组小于静止组(P<0.05);牛蒡子各组>运动组(P<0.05)。力竭游泳时间,运动组与静止组无明显差异;牛蒡子各组明显长于运动组(P<0.01),且随剂量增大而延长。血清睾酮水平,运动组为(3.51±1.46)nmol·L-1低于静止组(P<0.01);牛蒡子低、中、高剂量组分别为(4.85±1.54),(4.97±1.47),(5.07±1.56)nmol·L-1,高于运动组(P<0.01)。血清皮质酮水平,各组间均无显著差异。血清睾酮与皮质酮比值变化与睾酮变化较为一致。血清促黄体生成素、促卵泡激素水平,静止组与运动组无显著差异;牛蒡子各组高于运动组(P<0.05)。结论:补充牛蒡子可以从多靶点、多途径纠正由于运动导致的下丘脑-垂体-性腺轴功能的紊乱,有效预防血清睾酮水平的降低,进而增强抗疲劳能力。     

5种中药组分配伍体外清除多环芳烃和自由基的研究

目的:研究中药方剂组分配伍体外清除多环芳烃(PAHs)和自由基等致癌物质的作用.方法:按照均匀试验设计-药效试验-数学建模(模型验证)药效评价程序进行银杏叶提取物、甘草总黄酮、淫羊藿总黄酮、黄芪总苷和麦冬总皂苷5个中药组分不同配伍剂量体外清除PAHs和自由基的研究.结果:以清除1,1-二苯基-2-苦肼基(DPPH)、PAHs、羟自由基和超氧阴离子自由基的综合作用为指标,5味中药组分配伍后药效作用要强于单味药组分,其最佳配比剂量为甘草总黄酮0.8g·L-1、银杏叶提取物3.144 g·L-l、淫羊藿总黄酮0.024 g·L-l、黄芪总苷0.036 g·L-l和麦冬总皂苷0.024 g·L-l.配伍最佳比例约为33∶ 131∶1∶1.5∶1.结论:中药组分配伍可进一步提高特定中药组分体外清除多环芳烃和自由基等致癌物质的作用,可使中药组分在减少此类物质对人群的危害方面发挥更好的作用.     

Huang-Lian-Jie-Du-Decoction modulates glucagon-like peptide-1 secretion in diabetic rats

Aim of the study

Huang-Lian-Jie-Du-Decoction (HLJDD), a well-known Chinese herbal formula, has been used for diabetic treatment. The purpose of the study was to investigate whether HLJDD affected glucagon-like peptide (GLP)-1 (7–36) amide level in diabetic rats.

Materials and methods

Streptozotocin (STZ)-induced diabetic rats were treated with HLJDD at low dose (2 g/kg/day) or high dose (4 g/kg/day). After 5-week treatment, GLP-1 (7–36) amide level and insulin level in portal vein and tissues stimulated by oral glucose load were measured by ELISA kits. The proglucagon gene expression in intestinal tracts and the proliferation of intestinal L cell and pancreatic beta cell were measured using RT-PCR and immunohistochemistry techniques, respectively.

Results

It was found that 5-week HLJDD treatment attenuated alteration of glucose level and insulin level in plasma and tissues of diabetic rats induced by STZ, accompanied by improvement of diabetic syndrome. 5-week HLJDD treatment increased GLP-1 (7–36) amide level in portal vein plasma and distal ileum. Further studies showed that 5-week HLJDD treatment increased the mRNA level of proglucagon gene in distal ileum, promoted pancreatic beta cell and intestinal L cell proliferation in a dose-dependent manner.

Conclusion

All the results indicated that HLJDD exerted its anti-diabetic effects partly via modulating GLP-1 (7–36) amide level.     

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??OBJECTIVE To study the chemical constituents of different solvent extracts from Fructus Trichosanthis, and to study their antioxidant activity and protection of myocardial ischemia reperfusion injury in rats. METHODS The chemical constituents in different solvent extracts were determined by UV-Vis spectrophotometry. Myocardial ischemia reperfusion model was made by ligation of left coronary artery in rats. Rats were randomly divided into 6 groups, with 6 rats in each group.The sham operation group and the model groups were respectively given normal saline, Fructus Trichosanthis (equivalent to crude drug 22.5 g??kg^-1), compound Danshen dripping pill group(0.085 g??kg^-1).Medicines were given once a day for 7 d. After the last drug 1 h, left coronary artery was ligated for 30 min and then reperfusion was established for 120 min by removing the ligation. During this time, ECG was recorded. At the end, animals were euthanized. Blood was collected to evaluate the contents of CK-MB, MYO-MB, cTnT. The heart was removed and fixed to observe the changes of myocardial tissue by optical microscope. RESULTS Compared with the water extract group and the alcohol extract group of Fructus Trichosanthis, the total amino acids content of Fructus Trichosanthis dichloromethane extract was not detected, but the content of total flavonoids is higher (P<0.01). Compared with the water extraction liquid of Fructus Trichosanthis, the antioxidant properties on DPPH radical of Fructus Trichosanthis dichloromethane extract group is lower (P<0.01), and the antioxidant activity on-OH free radical of the alcohol extract of Fructus Trichosanthis group is lower (P<0.01). Compared with model group, the elevation of ST segment of electrocardiogram was significantly suppressed in each group during reperfusion (P<0.01 or P<0.05). The plasma CK-MB,cTnT and MYO-MB in water extract group were significant lowered (P<0.05). CONCLUSION The extraction of Fructus Trichosanthis is able to decrease the production of oxidants. The water extract of Fructus Trichosanthis could ameliorate myocardial ischemia reperfusion injury.     

The antidiabetic activity of total lignan from Fructus Arctii against alloxan-induced diabetes in mice and rats

The antidiabetic activity of the total lignan from the plant Fructus Arctii, used in China for the control of diabetes, was investigated in models of alloxan-induced diabetic mice and hyperglycemic-hyperlipidemic diabetic rats. The biochemical parameters studied were: blood glucose, glucose tolerance, serum insulin, serum triglycerides, total cholesterol and high density lipoprotein (HDL). Total lignan was given to mice and rats daily for 10 days at doses of 2.0, 1.0, 0.5 g/kg and 1.38, 0.69, 0.35 g/kg respectively. The alloxan-diabetic animals showed significant reductions in plasma glucose, triglycerides and total cholesterol after treatment with the total lignan from the plant Fructus Arctii and glibenclamide (used as standard) compared with the diabetic controls, while the glucose tolerance, serum insulin level and HDL-cholesterol were elevated without the risk of hypoglycemia. In conclusion, the total lignan from the plant Fructus Arctii has been proven to be a safer antidiabetic agent and might help to prevent diabetic complications. It can serve as a good adjuvant in the present armamentarium of antidiabetic drugs.     

A 'Yang-Invigorating' Chinese herbal formula protects against gentamicin-induced nephrotoxicity in rats

The effects of VI-28 (a Yang-invigorating Chinese herbal formula) treatment on the renal mitochondrial antioxidant system and susceptibility to gentamicin-induced nephrotoxicity were investigated in rats. VI-28 treatment (80 or 240 mg/kg/day x 12) enhanced the renal mitochondrial antioxidant system, as indicated by dose-dependent increases in the level/activities of reduced glutathione, Mn-superoxide dismutase, Se-glutathione peroxidase and glutathione S-transferases. VI-28 treatment protected against nephrotoxicity induced by gentamicin administration (100 mg/kg/day x 8) and the nephroprotection was associated with an enhancement in the renal mitochondrial antioxidant system. In conclusion, VI-28 treatment enhanced the renal mitochondrial antioxidant system, thereby protecting against gentamicin nephrotoxicity.     

中药复方对实验性糖尿病大鼠早期肾脏结构和功能的影响

目的观察按健脾益肾活血化瘀法组方的中药复方对糖尿病大鼠肾脏结构和功能的影响,探讨其作用机理.方法采用链脲佐菌素(STZ)按53 mg/kg剂量腹腔一次性注射建立糖尿病肾病大鼠模型,造模成功后随机分为中药组(中药复方)、西药组(瑞泰)、模型组和正常组.观察血糖、肾重/体重、肌酐、尿素氮、尿微量白蛋白等生化指标及糖尿病大鼠肾脏结构的改变.结果各治疗组与模型组比较肾脏结构和功能的损害程度均有明显降低(P＜0.01),且中药组优于西药组(P＜0.01).结论中药复方可降低糖尿病大鼠血糖、尿微量白蛋白、肌酐、尿素氮等的水平,具有防治早期糖尿病肾病的作用.