化学药物诱导构建衰老糖尿病大鼠模型

目的 采用化学药物损伤法构建衰老糖尿病(DM)大鼠模型.方法 3月龄健康Wistar雌性大鼠,20只腹腔注射生理盐水为正常对照组;20只腹腔注射D-半乳糖42 d为衰老模型组;另25只大鼠腹腔注射D-半乳糖42 d,并于第13天加灌高脂高糖乳剂30 d后腹腔注射链脲佐菌素(STZ)(30 mg/kg),制备衰老DM模型大鼠,筛选空腹血糖(FPG)≥11.1 mmol/L者为成模鼠.各组大鼠再灌胃生理盐水10 d后检测血生化指标.结果 ①正常对照组和衰老模型组大鼠体重增加幅度类似;衰老DM模型组大鼠于灌胃高脂高糖乳剂后,体重增加幅度显著高于前两组,但于注射STZ 10 d后体重显著低于前两组.②衰老模型组较正常对照组超氧化物歧化酶(SOD)、胰岛素、高密度脂蛋白(HDL)明显降低,丙二醛(MDA)、胰高血糖素明显升高,并呈现一定程度FPG、糖化血清蛋白(GSP)、总胆固醇(TC)、游离脂肪酸(FFA)升高和胰高血糖素样多肽(GLP)-1降低;衰老DM模型组上述指标变化更为显著,尤以胰岛素、GLP-1降低,血糖、血脂、胰高血糖素和肿瘤坏死因子(TNF)-α升高更为突出,呈现胰岛素/胰高血糖素严重失衡,糖脂代谢显著异常,类似老年DM特征,其成模机制可能与GLP-1分泌减少,TNF-α释放增加有关.结论 采用D-半乳糖+高脂高糖乳剂+STZ,可以较成功诱导出类似老年人DM的衰老DM大鼠模型.     

药桑不同提取物对2型糖尿病大鼠的治疗作用

目的 探讨药桑醇提物与水提物对2型糖尿病(T2DM)大鼠的治疗作用.方法 采用高脂高糖饮食同时腹腔注射链脲佐菌素复制T2DM大鼠模型.将动物随机分为模型组、拜糖平阳性对照、药桑醇提物组(20 mg/kg)和水提物组(20 mg/kg),并设置正常对照组.4 w后处死大鼠取血清测定血糖、果糖胺、血脂生化指标[总胆固醇(TC)、甘油三酯(TG)、低密度脂蛋白胆固醇(LDL-C)、高密度脂蛋白胆固醇(HDL-C)];取新鲜肝脏测定肝糖原、超氧化物歧化酶(SOD)、丙二醛(MDA).结果 与正常对照组比较,模型组血糖、果糖胺、MDA、TC、TG、LDL-C水平明显升高(P＜0.01),肝糖窄、HDL-C含量、SOD活性明显降低(P＜0.05).与模型组比较,药桑组各项指标有明显改善(P＜0.05).结论 药桑不同提取物可降低血糖、提高机体抗氧化能力,对T2DM大鼠具有一定的治疗作用.     

伊班膦酸钠对2型糖尿病大鼠糖脂代谢的影响

目的:研究伊班膦酸钠对2型糖尿病(T2DM)大鼠血糖和血脂代谢的影响。方法:采用高脂高糖饮食基础上一次性腹腔注射小剂量STZ方法建立T2DM动物模型。健康雄性SD大鼠随机分成4组:正常对照组(Control组)、高脂高糖组(HF组)、糖尿病组(DM组)、糖尿病+伊班膦酸钠组(DM+IB组)。建模成功后DM+IB组SD大鼠连续16周每天皮下注射5μg/kg剂量伊班膦酸钠溶液,Control组、HF组和DM+IB组大鼠在相同位置注射相等剂量的0.9%氯化钠。各组SD大鼠分别于实验0周、4周、5周、9周、17周及21周尾静脉取血测定空腹血糖、血脂等生化指标;并于实验0周、9周、17周及21周称量大鼠空腹体重。结果:伊班膦酸钠干预12周后TC及LDL-C开始下降(P0.05)、16周后LDL-C显著降低(P0.01);但整个实验过程中,伊班膦酸钠对HDL、TG、空腹血糖、空腹胰岛素、胰岛素敏感指数及体重均无显著影响。结论:伊班膦酸钠可降低T2DM大鼠TC、LDL-C水平降低,但对HDL、TG、体重及糖代谢无显著影响。     

小檗碱对2型糖尿病大鼠血清成纤维细胞生长因子21的影响

目的观察小檗碱对2型糖尿病(T2DM)大鼠血清成纤维细胞生长因子21(FGF21)的影响。方法将6周~8周龄SD雄性大鼠30只,随机分为正常对照组(6只)和T2DM模型组(24只),采用高糖高脂饮食联合小剂量链脲佐菌素制备T2DM大鼠模型。将成模的18只大鼠随机分为高糖高脂饮食组、正常饮食干预组、小檗碱联合正常饮食干预组(小檗碱干预组),每组6只,分别干预8周后禁食不禁水12h,经腹主动脉采血后处死大鼠,分离血清,即刻检测各组大鼠空腹血糖(FPG),同时留取血清-70℃保存,同批检测血清FGF21、空腹胰岛素(FINS)、总胆固醇(TC)、三酰甘油(TG),计算稳态模型胰岛素抵抗指数(HOMA-IR)。结果干预8周后,与正常对照组相比,小檗碱干预组和正常饮食干预组TG、TC、FPG、HOMA-IR、FGF21水平升高(P0.05)。干预8周后,与高糖高脂饮食组相比,小檗碱干预组和正常饮食干预组TG、TC、FPG水平均降低(P0.05),FGF21水平升高(P0.05);小檗碱干预组HOMA-IR降低(P0.05),正常饮食干预组HOMA-IR有降低趋势,但差异无统计学意义。干预8周后,与正常饮食干预组相比,小檗碱干预组TG、TC、FPG、HOMA-IR水平降低(P0.05);FGF21水平有升高趋势,但差异无统计学意义。结论小檗碱可以改善T2DM大鼠糖脂代谢紊乱及胰岛素抵抗程度,该作用可能与其可介导血清FGF21水平的升高有关。     

2型糖尿病大鼠胰岛素抵抗与视黄醇结合蛋白4的相关性

目的 观察高糖高脂膳食加小剂量链脲佐菌素腹腔注射诱导的2型糖尿病(T2DM)大鼠的血清视黄醇结合蛋白4(RBP4)的变化,探讨胰岛素抵抗(IR)与RBP4的关系.方法 将30只健康SD雄性大鼠随机分为正常对照组15只,模型组15只,喂养8w后,模型组予小剂量链脲佐菌素腹腔注射,建立T2DM大鼠IR模型,造模成功后继续喂养4w.实验结束时检测两组大鼠空腹血糖(FBG)、总胆固醇(TC)、甘油三酯(TG)、低密度脂蛋白胆固醇(LDL-C)、空腹胰岛素水平(FINS)和血清RBP4水平,计算胰岛素敏感指数(ISI)和胰岛素抵抗指数(HOMA-IR).结果 ①模型组大鼠体重在前8 w呈更明显的持续增加,第9周模型组大鼠体重开始下降,至第12周末明显低于正常对照组;②模型组大鼠血清RBP4、FBG、FINS、TG、TC、LDL-C、HOMA-IR高于正常对照组,ISI则显著降低;③模型组大鼠血清RBP4与FBG、FINS、TG、TC、LDL-C、HOMA-IR呈正相关,与ISI呈负相关;HOMA-IR是血清RBP4的独立的影响因素.结论 RBP4参与了T2DM的IR发生发展.     

基于PI3K、Akt信号通路探讨山腊梅叶乙醇提取物的降糖降脂作用

目的观察分析山腊梅叶乙醇提取物对高脂高糖糖尿病大鼠的降糖降脂调控作用。方法将大鼠随机分为5组:正常对照组、模型组、山腊梅叶提取物低剂量组、山腊梅叶提取物高剂量组(下文简称低、高剂量组)及二甲双胍组,每组15只,除正常组大鼠外,其余大鼠采用高脂高糖饲料喂养+腹腔注射小剂量链脲佐菌素建立2型糖尿病模型。给药结束后测定各组大鼠血糖和血脂相关指标,并检测胰岛素受体底物(IRS)、磷脂酰肌醇-3激酶(PI3K)、蛋白激酶B(AKT)、葡萄糖转运体4(GLUT-4)表达水平。结果与正常对照组比较,模型组大鼠血清胰岛素水平下降,而空腹血糖、糖化血红蛋白,以及血清胆固醇(TC),三酰甘油(TG)及低密脂蛋白胆固醇(LDL-C)水平均明显升高,差异有统计学意义(P0.05);与模型组比较,低剂量、高剂量组及二甲双胍组大鼠空腹血糖、糖化血红蛋白、血清TC、TG及LDL-C水平均明显降低,差异有统计学意义(P0.05),血清胰岛素、肝脏IRS、PI3K、AKT、GLUT-4蛋白表达明显升高,差异有统计学意义(P0.05)。结论山腊梅叶具有降低血糖、血脂之效,其机制可能与调节IRS-1、PI3K、Akt信号通路有关。     

2型糖尿病大鼠并发心肌病的研究

目的 在大鼠中复制类似人类2型糖尿病模型,观察并发糖尿病性心肌病的情况.方法 取健康雄性SD大鼠120只,体质量180～220 g,按体质量及血糖值分为4组:(1)糖尿病组:40只,高糖高脂饲料喂养,一次性腹腔注射30 mg/kg链脲佐菌素(STZ)溶液;(2)STZ组:30只,普通饲料喂养,一次性腹腔注射30 mg/kg STZ溶液;(3)高糖高脂饲料组:25只,高糖高脂饲料喂养,一次性腹腔注射等容积柠檬酸盐缓冲液溶液;(4)对照组:25只,普通饲料喂养,一次性腹腔注射等容积柠檬酸盐缓冲液溶液.腹腔注射STZ溶液或柠檬酸盐缓冲液溶液后,观察动物饮水、进食及尿量变化.注射后4、8、12、16周,各组分批抽样检查,称取体质量,取血检测空腹血糖、空腹胰岛素、三酰甘油、总胆固醇;处死动物取心脏称质量,取心肌组织行光镜及透射电镜观察.结果 实验饲料喂养1周,各组大鼠体质量、血糖差异无统计学意义(P>0.05);喂养4周,STZ或柠檬酸盐缓冲液注射前,糖尿病组和高糖高脂饲料组大鼠体质量、空腹胰岛素、胰岛素抵抗指数较对照组和STZ组明显升高(P<0.05);糖尿病组与高糖高脂饲料组相比、STZ组和对照组相比差异均无统计学意义(P>0.05).注射后4个时段,糖尿病组和高糖高脂饲料组大鼠血糖、体质量、心脏质量、血三酰甘油、总胆固醇比同时段的对照组和STZ组增高(P<0.05),糖尿病组大鼠的上述指标较高糖高脂饲料组大鼠增加更显著,差异有统计学意义(P<0.05),STZ组和对照组相比差异无统计学意义(P>0.05).心肌光镜和电镜检查结果显示,糖尿病组大鼠心肌细胞肥厚并出现变性、凋亡等显著病变,间质胶原纤维增生;STZ组大鼠心肌无明显病理改变;高糖高脂饲料组大鼠心肌呈现类似糖尿病大鼠病理改变,但与糖尿病组大鼠相比,改变较不明显.结论 2型糖尿病大鼠成模4周后,心脏发生糖尿病性心肌病的病理改变,表现为心肌细胞肥大、变性,间质纤维组织增生,其发生率为100%.     

芒黄颗粒对2型糖尿病模型大鼠血脂血糖及胰岛素水平的影响

目的 观察芒黄颗粒(MHG)对高脂血症糖尿病模型大鼠血糖、血脂及胰岛素的影响.方法 以链脲佐菌素加高糖高脂饮食制备2型糖尿病(T2DM)大鼠模型,观察芒黄颗粒对T2DM大鼠空腹12 h血糖,血脂,血胰岛素含量的影响.结果 芒黄颗粒高剂量组可明显降低高脂高糖糖尿病模型大鼠血糖、血脂水平,对胰岛素无影响.结论 芒黄颗粒具有较好的降血糖,降低血脂作用.     

牛肝菌多糖对2型糖尿病大鼠血糖、体重及血脂水平的影响

目的探讨牛肝菌多糖对2型糖尿病(T2DM)大鼠血糖、体重及血脂水平的影响。方法采用高脂高糖饲料喂养联合链脲佐菌素(STZ)腹腔注射法构建T2DM大鼠模型,灌胃给予牛肝菌多糖干预4 w,观察体重变化并检测血清葡萄糖(GLU)、三酰甘油(TG)、总胆固醇(TC)、低密度脂蛋白胆固醇(LDL-C)、高密度脂蛋白胆固醇(HDL-C)指标。结果牛肝菌多糖能显著降低T2DM大鼠GLU、TG、TC、LDL-C的含量,提高HDL-C的含量,并有效改善"三多一少"症状中的体重降低情况。结论牛肝菌多糖可以降低血糖水平,对T2DM大鼠有治疗功效。     

补阳还五汤对2型糖尿病大鼠模型PPARα/γ表达的影响

目的 探讨补阳还五汤对2型糖尿病(T2DM)模型大鼠PPARα/γ表达的影响.方法 SD大鼠100只,采用高脂高糖饲料喂养加腹腔小剂量注射链脲佐菌素,诱导T2DM大鼠模型,在此基础上采用疲劳游泳法复制气虚血瘀模型.随机分为:模型组20只、二甲双胍组20只、补阳还五汤组(中药组)20只、结合组18只,对照组18只,分别灌胃治疗.于第8周观察空腹血糖(FPG)、空腹胰岛素(FINS)、总胆固醇(TC)、甘油三酯(TG)、高密度脂蛋白(HDL)、低密度脂蛋白(LDL)等指标变化及PPARα/γ mRNA表达.结果 模型组大鼠FPG、FINS、TC、TG、LDL高于对照组(P<0.01);3个治疗组与模型组比较各项指标明显降低(P<0.05或P<0.01).模型组大鼠肝脏PPARα/γ mRNA的表达明显低于对照组(P<0.05),经治疗后3个治疗组PPARα/γ mRNA表达明显高于模型组,且以结合组最高(P<0.05).结论 补阳还五汤可降低T2DM模型大鼠血糖、血脂,使PPAR α/γ mRNA的表达上调,从而改善胰岛素抵抗.     

滋肾清肝方对2型糖尿病胰岛素抵抗大鼠糖脂代谢的影响

目的 探讨滋肾清肝方对2型糖尿病大鼠糖脂代谢的影响.方法 大鼠高糖高脂饲料喂养4周后,腹腔注射30 mg/kg链脲佐菌素建立2型糖尿病大鼠模型,并随机分为糖尿病模型对照组、滋肾清肝方低剂量组[灌胃（ig） 250 mg/（kg·d）]、中剂量组[ig 500 mg/（kg·d）]、高剂量组[ig 750 mg/（kg·d）]及罗格列酮治疗组[ig 4mg/（kg ·d）].以滋肾清肝方低、中、高剂量持续给药30 d后测空腹血糖、血脂、糖化血红蛋白、胰岛素水平并行口服糖耐量试验.结果 与模型组比较,应用滋肾清肝方大鼠空腹血糖、糖化血红蛋白、甘油三酯、总胆固醇、低密度脂蛋白及糖耐量试验中糖负荷后120 min血糖显著降低（P均＜0.05）,高密度脂蛋白和胰岛素、胰岛素敏感指数显著升高（P均＜0.05）.结论 滋肾清肝方能有效地降低2型糖尿病模型大鼠的血糖,改善脂代谢紊乱.     

维生素C对糖尿病大鼠血脂和主动脉硫酸肝素蛋白聚糖蛋白表达的影响

目的观察维生素C对糖尿病大鼠血脂和主动脉硫酸肝素蛋白聚糖表达的影响。方法利用链脲佐菌素腹腔注射法诱导建立1型糖尿病大鼠模型,将实验用SD大鼠随机分正常对照组、糖尿病组、维生素C治疗组。治疗16周,观察治疗期间及实验后大鼠的一般状况、血糖、甘油三酯、总胆固醇、低密度脂蛋白胆固醇、高密度脂蛋白胆固醇、糖化血红蛋白、糖化低密度脂蛋白,分离主动脉,HE染色及免疫组织化学检测主动脉内膜硫酸肝素蛋白聚糖表达。结果①造模4组大鼠均出现血脂异常及主动脉病理形态改变。②维生素C对血糖无影响,但能改善基本状况,维生素C能降低糖尿病大鼠的甘油三酯(P<0.05)、总胆固醇(P<0.05)、低密度脂蛋白胆固醇(P<0.05)、糖化血红蛋白(P<0.05)、糖化低密度脂蛋白(P<0.05),升高高密度脂蛋白胆固醇(P<0.05);维生素C增强主动脉硫酸肝素蛋白聚糖(P<0.05)表达。结论维生素C无降糖作用,但具有确切的主动脉保护作用。     

Hypoglycemic,hypolipidemic and antiatherogenic effects of oleuropein in alloxan-induced Type 1 diabetic rats

ObjectiveTo assess effect of oleuropein on hemoglobin A1C, serum glucose, lipid profile and atherogenic index in alloxan-induced Type 1 diabetic rats.MethodsThirty Sprage-Dawley male rats were divided into three groups randomly; group one as control, group two diabetic untreatment, and group three treatments with oleuropein by 15 mg/kg i.p. daily, respectively. Diabetes was induced in the second and third groups by alloxan injection subcutaneously. After 8 weeks, the levels of hemoglobin A1C, fasting blood glucose, triglyceride, cholesterol, low density lipoprotein, very low density lipoprotein, high density lipoprotein and atherogenic index of all groups were analyzed.ResultsOleuropein significantly decreased hemoglobin A1C, fasting blood glucose, triglyceride, cholesterol, low density lipoprotein, very low density lipoprotein. High density lipoprotein level was significantly increased when treated with oleuropein.ConclusionsThe findings of the present study suggest that oleuropein exert beneficial effects on serum glucose, hemoglobin A1C, lipid profile and atherogenic index in alloxan-induced Type 1 diabetic rats.     

Protective effect of Gui Qi mixture on the progression of diabetic nephropathy in rats.

Huang Qi (root of Astragalus membranaceus) and Dang Gui ( Angelica sinensis), two of the most widely used herbs in traditional Chinese medicine, have been proven to be effective in the treatment of diabetes mellitus (DM) although the underlying molecular mechanisms are not fully elucidated. This study was designed to investigate the protective effect of Dang Gui and Huang Qi mixture (GQM) on the development of diabetic nephropathy in rats with streptozotocin (STZ)-induced DM and the possible underlying molecular mechanism. The diabetic animal model was made by a single intraperitoneal injection of STZ and then treated with GQM or benazepril. Blood glucose, triglyceride (TG), cholesterol (CHO), high density lipoprotein (HDL), serum creatinine (Scr), creatinine clearance rate (Ccr), blood urea nitrogen (BUN), urine beta (2)-microglobin (beta (2)-MG), kidney/body weight (K/B) ratio, glomerular area (GA), renal transforming growth factor-beta (1) (TGF-beta (1)) mRNA expression and blood and renal angiotensin II (AngII) expression were determined 8 weeks after the treatment. The blood glucose, CHO and TG levels, BUN, SCr, Ccr. K/B ratio, GA, the excretion of beta (2)-MG, renal TGF-beta (1) mRNA expression and blood and renal AngII expression were significantly increased while the HDL level was decreased 8 week after STZ injection. The changes in blood glucose, TG, CHO and HDL were reversed by GQM, not by benazepril, whereas the changes in other variables were reversed by both GQM and benazepril. Our results suggest that GQM alleviates the disorder in blood glucose and lipids, protects against the progression of renal nephropathy in diabetic rats, probably by inhibiting the expression of AngII and TGF-beta (1) mRNA.     

桃叶珊瑚苷对糖尿病大鼠线粒体的抗氧化作用

目的 研究桃叶珊瑚苷对链脲佐菌素(STZ)诱导的糖尿病大鼠血糖和线粒体抗氧化能力的影响. 方法 通过STZ腹腔注射建立糖尿病大鼠模型,将其随机分为糖尿病组、STZ低剂量组和STZ高剂量组,并与空白对照组比较.观察桃叶珊瑚苷治疗前后糖尿病大鼠的形态、体质量、血糖、线粒体内脂质过氧化和抗氧化体系的变化. 结果 与空白对照组比较,糖尿病大鼠血糖、MDA显著升高,CAT、GSH-Px、SOD活力显著下降;桃叶珊瑚苷治疗后血糖、MDA显著降低,CAT、GSH-Px、SOD活力显著升高. 结论 桃叶珊瑚苷能显著降低糖尿病大鼠的血糖值,改善线粒体的抗氧化水平,是一种潜在的防治糖尿病药物.     

Antidiabetic and antihyperlipidaemic potential of Amaranthus viridis (L.) Merr. in streptozotocin induced diabetic rats

ObjectiveThe present study is planned to investigate the antidiabetic and antihyperlipidaemic potential of Amaranthus viridis stem aqueous extract (AVSAE) in Stz-induced diabetic rats.MethodsDiabetes was induced in rats by single intraperitoneal injection of STZ (55mg/kg b.wt.). After 72 h rats with marked hyperglycaemia (fasting blood glucose ≥250 mg/dl) were selected and used for the study. Antidiabetic activity was evaluated by administration of AVSAE orally at the doses of 100,200 and 400 mg/kg body weight for 30 days. Glibenclamide (500 ug/kg) was used as the reference drug. Fasting blood glucose and lipid parameters, viz. triglycerides, total cholesterol, high density lipoprotein and low density lipoprotein levels were measured.ResultsIn STZ-induced diabetic rats, repeated administration of AVSAE significantly (P < 0.05) decreased the blood glucose level in a dose-dependent manner during the 30 days of treatment period. AVSAE modulated lipid profile changes in STZ-diabetic rats in a dose-dependent manner.ConclusionsThe significant control of serum lipids levels in the AVSAE treated diabetic rats may be directly attributed to improvement in glycemic control upon AVSAE therapy. Hence, these findings demonstrate that Amaranthus viridis has the potential to treat diabetes mellitus and complications owing to its antidiabetic and antihyperlipidaemic effect.     

Relationship between serum pseudocholinesterase and triglycerides in experimentally induced diabetes mellitus in rats

Summary This study was designed to understand the reasons for the increase in serum pseudocholinesterase activity in diabetes mellitus. Streptozotocin-induced diabetic rats were used for the study. Serum pseudocholinesterase activity increased with the induction of diabetes (381.5 units/l ± 11.8) compared to the non-diabetic rats (243.1 units/l ± 7.2). Serum triglycerides, total low density lipoprotein and glycerol also increased concurrently with the development of diabetes. Insulin treatment of the diabetic rats normalized serum glucose concomitant with the reduction of pseudocholinesterase activity, triglycerides, total low density lipoprotein and glycerol. Heparin injection appeared to activate lipoprotein lipase in the diabetic rats by showing a marked fall in serum triglyceride and total low density lipoprotein levels but not in pseudocholinesterase activity. Administration of tetraisopropylpyrophosphoramide a specific pseudocholinesterase inhibitor, inhibited serum and adipose tissue pseudocholinesterase activity by > 80% and liver > 50%. Concurrent with the inhibition of pseudocholinesterase activity serum triglyceride, low density lipoprotein and glycerol decreased significantly. In normal rats treatment with tetraisopropylpyrophosphoramide also reduced serum lipoproteins markedly, while glycerol only showed a marginal decrease. Glycerol was used as a marker of adipose tissue lipolysis and total low density lipoprotein which is defined as lipoproteins of density < 1.063 (LDL + VLDL). Our findings suggest (a) that the increase in serum pseudocholinesterase activity in diabetic rats is due to the overproduction of very low density lipoprotein triglyceride in the liver, and (b) decreased lipolysis in the adipose tissue of the diabetic rats treated with tetraisopropylpyrophosphoramide is accompanied by an inhibition of pseudocholinesterase activity.     

Short term effects of L-carnitine on serum lipids in STZ-induced diabetic rats

The aim of this study was to evaluate the effects of L-carnitine supplementation on serum triglyceride and total cholesterol levels in streptozotocin (STZ)-induced diabetic rats. Thirty-two male Wistar rats were divided into diabetic and diabetic-L-carnitine-supplemented groups. Diabetes was induced by injection of a single dose of streptozotocin (40 mg/kg, intraperitoneally) in citrate buffer. L-Carnitine was supplemented by IM injection of 100 mg/kg per day for 10 days. Serum glucose, triglyceride and total cholesterol levels were determined at days 0, 5 and 10. Rats receiving L-carnitine had lower triglyceride levels at both days 5 and 10 (P < 0.05). Total cholesterol levels in the carnitine-supplemented group were lower, but statistical significance was achieved only at day 10 (P < 0.05). These results suggest that L-carnitine exhibits hypotriglyceridemic and hypocholesterolemic effects in streptozotocin-induced diabetic rats. Clinical trials of L-carnitine supplementation on patients with diabetes induced hyperlipidemia must be further evaluated.     

T型和L型钙通道阻断剂改善大鼠糖尿病肾功与糖,脂代谢无关

目的阐明Ｔ通道阻滞剂米贝地尔和Ｌ通道阻滞剂氨氯地平对实验性糖尿病鼠肾的保护作用是否基于改善糖、脂水平。方法雄性ＳＤ大鼠右肾切除,给予链脲佐菌素（ＳＴＺ）按６５ｍｇ／ｋｇ腹腔注射。米贝地尔组（Ｍｉｂ,３０ｍｇ／ｋｇ,ｑｄ,ｎ＝６）;氨氯地平组（Ａｍｌ,...