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1.
通过1型和2型糖尿病动物模型的研究发现过渡金属元素钒（V）具有降糖作用。有机钒化合物与无机钒相比，其副作用低、体内吸收率和生物利用度高。本文主要探讨了四价有机钒化合物4-氯-2,6-双吡啶双氧钒化合物（4-chloro-2,6-dipicolinatodioxovanadium(Ⅳ)，V4dipic-Cl）对链脲佐菌素（STZ，55 mg/kg）诱导的1型糖尿病大鼠的生物学作用。大鼠通过自由饮水的方式口服V4dipic-Cl（0.5 mg/ml）8天。结果表明，V4dipic-Cl组的大鼠血糖和血清碱性磷酸酶（ALP）活性显著低于糖尿病对照组，并且其葡萄糖耐量水平得到明显改善。但有机配体H2dipic-Cl对糖尿病大鼠的血糖和血清ALP活性的影响不显著。结果提示V4dipic-Cl具有降低糖尿病大鼠的血糖，提高葡萄糖耐量和改善肝功能的作用。  相似文献   

2.
研究富铬啤酒酵母和普通啤酒酵母以及醋酸铬对链脲佐霉素（STZ）诱导的糖尿病大鼠的生物效应。富铬酵母的制备是以普通啤酒酵母作为微量元素载体，酵母细胞在含铬（Cr）的介质中驯化生长，吸收并同化无机铬化合物，使之转化成富集铬元素的啤酒酵母，普通啤酒酵母和富铬啤酒酵母均来自于相同的单克隆细胞系。以普通酵母为对照，分别每天灌胃给予链脲佐霉素诱导的糖尿病大鼠含铬量为300 μg/kg.bw的富铬酵母和醋酸铬，实验周期为32天。结果表明，富铬酵母组和普通酵母组大鼠的体重明显高于糖尿病大鼠（p < 0.01），醋酸铬对糖尿病大鼠的体重影响不显著。与普通酵母和醋酸铬相比，富铬酵母明显改善糖尿病大鼠的口服糖耐量（OGTT）水平。与糖尿病组相比，富铬酵母组大鼠的血清甘油三酯（TG）、肌苷、血清谷丙转氨酶（ALT）和谷草转氨酶（AST）水平下降。结果提示富铬酵母能够改善糖尿病大鼠的糖尿病症状及其肝肾功能。  相似文献   

3.
目的 利用链脲佐菌素（STZ）联合高脂饮食复制2型糖尿病小鼠模型,观察茶多糖对小鼠血清生化指标的影响.方法 90只小鼠给予高脂饮食4周后腹腔注射STZ建立2型糖尿病模型,随机分成模型组、茶多糖高中低三个剂量组以及阳性药二甲双胍组,另取10只为正常对照组.茶多糖组、阳性对照组分别按照计量灌胃治疗,对照组和模型组给予等体积的蒸馏水灌胃.4周后,检测小鼠血清空腹血糖、胰岛素、甘油三酯、总胆固醇以及糖耐量等指标.结果 4周后,茶多糖中高剂量组空腹血糖、甘油三酯以及总胆固醇均比模型组低（P＜0.05,P＜0.01）,而给药组血清胰岛素水平比模型组高（P＜0.05,P＜0.01）,并且给药组与模型组比较小鼠糖耐量有所改善（P＜0.05,P＜0.01）.结论 茶多糖能够降低2型糖尿病小鼠血糖,并且能够改善脂类代谢.  相似文献   

4.
川芎嗪对糖尿病大鼠肾脏保护作用的组织学观察   总被引：2，自引：0，他引：2  
余秀平  陈少强  黄焱  张更 《学会》2001,(3):43-43
[目的 ]探讨川芎嗪对糖尿病大鼠肾脏是否有保护作用。 [方法 ]用链尿佐菌素 (STZ)制作糖尿糖大鼠动物模型 ,应用光镜组织学方法观察正常组、糖尿病组和糖尿病川芎嗪治疗组三组大鼠肾脏形态学的改变。 [结果 ]2 0周时 ,糖尿病大鼠肾组织已出现糖尿病肾病早期的特征性变化 ,正常组和川芎嗪治疗组大鼠肾组织在光镜下未见明显改变。 [结论 ]川芎嗪对糖尿病大鼠肾脏具有保护作用  相似文献   

5.
Ⅱ型糖尿病（T2DM）占糖尿病发病率的90%以上，已成为影响全球生命健康的主要慢性疾病之一。开发高效、安全的糖尿病治疗药物一直是该领域的研究热点。本研究利用T2DM小鼠模型对党参大孔树脂60%乙醇分离组份（60%-DS）进行了体内降血糖作用效果研究。采用链脲佐菌素（STZ）结合高脂饲料诱导的T2DM小鼠模型，评价60%-DS对小鼠葡萄糖耐量、胰岛素耐量、血脂四项等生理生化指标的影响。结果证实60%-DS能够降低STZ小鼠的血糖，改善葡萄糖耐量，并在一定程度上改善胰岛素抵抗，提高机体胰岛素的敏感性。  相似文献   

6.
目的探讨施他宁在高原地区治疗急性胰腺炎的临床效果。方法将98例重症急性胰腺炎病人分为施他宁治疗组（n=46）和对照组（n=52）,观察了两组治疗前后血清淀粉酶的含量,并对比分析两组之间并发症的发生率、病死率、住院天数。结果治疗后施他宁治疗组的血清淀粉酶含量明显低于对照组（P〈0．05）;施他宁治疗组患者的并发症、病死率、住院时间均低于对照组（P〈0．05）。结论施他宁能有效降低急性胰腺炎患者血清淀粉酶水平,降低其并发症发生率及死亡率;在高原地区施他宁对急性胰腺炎的治疗有重要价值。  相似文献   

7.
目的观察银杏叶提取物对糖尿病大鼠心肌的保护作用.方法制备Wistar大鼠糖尿病模型,银杏叶提取物干预治疗,12周后,测定大鼠血液生化指标,免疫组化方法观察心肌组织中结缔组织生长因子（CTGF）的表达情况,RT-PCR检测CTGF mR NA的表达情况.结果模型组血液生化指标偏离正常水平,治疗组较模型组有明显改善（P＜0.05）.免疫组化染色,模型组心肌细胞CTGF的表达明显高于正常组.治疗组与模型组比较,CTGF的表达有所降低,但仍略高于正常组.与正常组比较,模型组CTGF mR NA的表达明显升高（P＜0.05）.与模型组比较,治疗组CTGF mRNA的表达明显降低（P＜0.05）.结论银杏叶提取物对糖尿病大鼠心肌具有一定的保护作用,其机制可能与调节糖、脂代谢,降低心肌细胞中CTGF的表达有关.  相似文献   

8.
罗佳佳 《内江科技》2010,31(12):28-28,35
目的：观察有氧运动或/和补充银杏叶提取物对自然衰老大鼠的总抗氧化能力（T-AOC）、丙二醛（MDA）、过氧化氢酶（CAT）等指标的影响。方法：采用32周龄的SD大鼠20只,随机分为4组,对照组（A组）,运动组（B组）,银杏叶提取物组（C组）,和运动联合补充银杏叶提取物组（D组）。干预前后观测体重、血清T-AOC、MDA、CAT含量的变化。结果：实验结果表明,通过有氧运动或/和补充银杏叶提取物的干预,C、D各组的血清T-AOC含量明显升高,血清MDA有小幅度下降（P〈0.05）,血清CAT含量无明显变化。B组各项指标含量变化不明显（P〉0.05）。结论提示,通过有氧运动和补充银杏叶提取物均能提高机体的抗氧化水平,增强抗氧化能力。  相似文献   

9.
杨云芳  杨旭芳 《中国科技信息》2006,(11):252-252,229
应用模糊综合评判方法评定银杏达莫对实验性Ⅱ型糖尿病大鼠的治疗效果的影响,根据检测的四项指标（体重、血糖、血脂、胰岛素）,综合评定结果显示银杏达莫对Ⅱ型糖尿病大鼠的治疗效果是有效的.  相似文献   

10.
目的：探讨不同训练年限对青少年武术套路骨密度的影响。方法：以山西2010届第十三届全体武术套路运动员为研究对象,对与骨密度有关的相关指标进行测量,并对结果进行分析。结果显示：青少年运动员的Z值均高于普通人群,具有显著的差异性（P〈0.05）;在组间比较中,随着训练年限的增加,男女运动员的骨量不断的增加;骨强度指数在训练年限在3年-6年一直增强,具有显著的差异性（P〈0.05）。结论：武术套路运动对男女性的骨密度、骨量具有一定的作用,均能提高人体的骨强度、骨矿物含量。  相似文献   

11.
Induction of diabetes by Streptozotocin in rats   总被引：1，自引：0，他引：1  
The objective of this study is to induce experimental diabetes mellitus by Streptozotocin in normal adult Wistar rats via comparison of changes in body weight, consumption of food and water, volume of urine and levels of glucose, insulin and C-peptide in serum, between normal and diabetic rats. Intra-venous injection of 60mg/kg dose of Streptozotocin in adult wistar rats, makes pancreas swell and at last causes degeneration in Langerhans islet beta cells and induces experimental diabetes mellitus in the 2–4 days. Induction of experimental diabetes mellitus is indeed the first step in the plan of purification of pancreatic Langerhans islet cells of normal rats for transplanting under the testis subcutaneous of experimentally induced diabetic rats. Streptozotocin induces one type of diabetes which is similar to diabetes mellitus with non-ketosis hyperglycemia in some animal species. For induction of experimental diabetes in male adult rats weighted 250–300 grams (75–90 days), 60mg/kg of Streptozotocin was injected intravenously. Three days after degeneration of beta cells, diabetes was induced in all animals. The diabetic and normal animals were kept in the metabolic cages separately and their body weight, consumption of food and water, urine volume, the levels of serum glucose, insulin and C-peptide quantities in all animals were measured and then these quantities were compared. For a microscopic study of degeneration of Langerhans islet beta cells of diabetic rats, sampling from pancreas tissue of diabetic and normal rats, staining and comparison between them, were done. Induction of diabetes with Streptozotocin decreases Nicotinamide-adenine dinucleotide (NAD) in pancreas islet beta cells and causes histopathological effects in beta cells which probably intermediates induction of diabetes. In this study, we used Streptozotocin for our experiments in induction of experimental diabetes mellitus. After Induction of diabetes, consumption of food and water, volume of urine and glucose increased in the diabetic animals in comparison with normal animals, but the weight of body and the volume of insulin and C-peptide decreased in the diabetic animals. Sampling and staining of pancreas tissue of diabetic and normal rats showed that the Langerhans islet beta cells of diabetic rats have been clearly degenerated. In three days, Streptozotocin makes pancreas swell and at last causes degeneration in Langerhans islet beta cells and induces experimental diabetes. It also changes normal metabolism in diabetic rats in comparison with normal rats. Consumption of water and food, volume of urine, serum glucose increases in diabetic animals in comparison with normal rats but the levels of serum insulin, C-peptide and body weight decreases.  相似文献   

12.
In view of association of diabetes mellitus and male infertility, present study was designed to investigate the functional status of hypothalamic pituitary gonadal (HPG) axis in diabetic men. Thirty-five diabetic men (BMI 22.24±0.21) in the age group 20–40 (30.6±4.7) years were selected. Twenty-five healthy men (BMI 23.85±0.25), in the same age group (29.5±4.8) served as control. Blood samples were collected for hormonal and biochemical estimations. Diabetic men had significantly low serum testosterone with low LH and FSH, hypercholesterolemia, hypertriglyceridemia, hypoalbuminemia and increased oxidative stress. Low serum testosterone in diabetic men was accompanied by low LH and FSH; the inability of the pituitary gland to respond appropriately to a decline in testosterone implying central effect of high serum glucose on the interaction between the nervous and endocrine system. Nutritional deficiency, increased oxidative stress and increased aromatase activity due to excessive body fat might have also contributed to low serum testosterone.  相似文献   

13.
A distinguishable feature of type 2 diabetes besides hyperglycemia and deranged lipid profile is an impaired insulin secretion, peripheral insulin resistance and obesity which has become a major health concern worldwide. India with an estimated 31million diabetics in 2000 and 79mllions by the yr 2030 has the highest number of type 2 diabetics in the world. In this study, we aimed to see if yoga-asanas and pranayamas have any influence in modifying certain biochemical parameters. Sixty patients of uncomplicated type 2 diabetes (age 35–60 yrs of 1–10 yrs duration) were divided into two groups: Group 1 (n=30): performed yoga along with the conventional hypoglycemic medicines and group 2 (n=30): patients who only received conventional medicines. Duration of the study was 45 days. Basal recordings of blood glucose (fasting and post-prandial), lipid profile and serum insulin were taken at the time of recruitment and the second reading after forty five days. Results showed a significant improvement in all the biochemical parameters in group 1 while group 2 showed significant improvement in only few parameters, thus suggesting a beneficial effect of yoga regimen on these parameters in diabetic patients.  相似文献   

14.
To evaluate the magnitude of bone loss in postmenopausal women and to study the effect of a selective estrogen Receptor Modulator, raloxifene, on bone loss by quantitative ultrasound of calcaneus and serum bone specific alkaline phosphatase (BAP). Postmenopausal women with ostesopenia/osteoporosis were assigned randomly to receive placebo (n=30) or raloxifene (60mg/d, n=30) with calcium (500mg/day) and vitamin D (250 IU/day). The bone mineral density (BMD) and BAP levels were measured at the beginning of therapy and six months later. They were subjected to statistical analysis (t test, p value) using SPSS statistical package. 70% of postmenopausal women suffered from osteopenia/osteoporosis. After raloxifene therapy, there was improvement in the BMD but this was not statistically significant (p>0.05). There was a fall in the value of serum BAP by 26.6% (p<0.05). Raloxifene has a favourable effect on bone turnover as evident from changes in BMD and a significant fall in serum BAP.  相似文献   

15.
Erythrocyte membrane protein glycosylation increase by 3.4 fold in diabetes. Insulin or sulfonylurea treatment did not reduce the extent of glycosylation. The serum protein glycosylation was comparable in all the groups including control. Erythrocyte membrane Na+,K+-ATPase activity decreased in the diabetics; only insulin treatment partly restored the activity. Erythrocyte membrane acetylcholinesterase activity decreased only in the sulfonylurea treated group. Serum butyrylcholinesterase activity was relatively low in the diabetic and insulin treated diabetic groups. The Km and Vmax of the two components of Na+,K+-ATPase from erythrocyte membranes were differently affected in the diabetic and the two treatment groups. The Vmax of acetylcholinesterase decreased only in the sulfonylurea treated group. Diabetic states resulted in decreased Vmax of components I and II of serum butyrylcholinesterase. In insulin-treated diabetics, component II was absent. Sulfonylurea group resembled diabetics.In vitro incubation with insulin differentially affected the Na+,K+-ATPase and serum butyrylcholinesterase activities.  相似文献   

16.
The present study was undertaken to evaluate antidiabetic and antioxidant activities of Cayratia trifolia root extract against streptozotocin induced diabetes in experimental rats to scientifically validate its use against diabetes in some parts of India. Ethanolic extract, showing the highest activity in in vitro experiments, was prepared in saline and administered orally to streptozotocin induced albino Wistar diabetic rats for 21 days. Biochemical parameters liver and muscles glycogen and in vivo antioxidant activity in normal, diabetic control, standard (metformin) and treated animals were determined and compared. Attempt was made to isolate, purify and characterize one of the major secondary metabolites in extract by range of chromatographic and spectroscopic techniques. Treatment of streptozotocin induced diabetic rats with ethanolic root extract (500 mg/kg) caused significant (P < 0.01) reduction in blood glucose (312–178 mg/dL), increase in body weight (181–219 g) and serum insulin (1.28–2.26 IU/dL). It also maintained lipid profile and tests of liver and kidney functions within normal range as compared to diabetic control rats and almost at par with standard drug metformin. The oxidative stress induced decline in glutathione and catalase in liver and kidney tissues showed recovery nearly to normal level as a function of treatment. The GC–MS profile of the extract showed relatively high concentration of β-sitosterol which was characterized by different spectroscopic and chromatographic techniques. The result scientifically and comprehensively validate the reported use of roots of this indigenous plant against diabetes. A strong antioxidant activity of the ethanolic root extract suitably compliments the antidiabetic effect.  相似文献   

17.
The hyperlipidemia, fatty liver and the high levels of liver and kidney thiobarbituric acid reactive substances (TBARS) observed in rats which were fed ethanol for 45 days, could be significantly reduced by feeding diacetodibutyl disulphide (DADBDS). Ethanol-induced hypoproteinemia and the rise in serum enzymes like AST (EC 2.6.1.10), ALT (EC 2.6.1.2) and ALP (EC 3.1.3.1) could also be ameliorated by DADBDS. Feeding of this compound to normal rats did not produce any change in serum or tissue lipid levels or serum enzymes or tissue TBARS except a moderate reduction in serum triacyl glycerols. DADBDS feeding to rats maintained on a high lipid diet could also reduce the serum and tissue lipid levels and also reduce the serum transaminases. DADBDS which is an aliphatic disulphide could produce hypolipidemic effects in rats fed a single large dose of ethanol, whereas dimenthol disulphide which is an aromatic disulphide was not useful as a hypolipidemic agent. Perhaps hypolipidemic effects are shown only by aliphatic disulphides and not by aromatic disulphides. Feeding of 100 mg DADBDS per kg body weight to normal fasted rats produced a mild hypoglycemia, but higher doses produced a hyperglycemic effect. This dose of DADBDS increased the serum insulin levels and reduced blood glucose levels in fasted diabetic rats, but DADBDS feeding did not alter the serum insulin levels in fasted normal rats. DADBDS is odourless and tasteless in 1% solution and it could be a better substitute for garlic for hypoglycemic and hypolipidemic studies.  相似文献   

18.
The objective of this study is to induce experimental diabetes mellitus by streptozotocin in normal adult Wistar rats via comparison of changes in body weight, consumption of food, volume of water, urine and levels of glucose, insulin and C-peptide in serum, between normal and diabetic rats. Intra-venous injection of 60 mg/kg dose of streptozotocin in 250–300 g (75–90 days) adult Wistar rats makes pancreas swell and causes degeneration in Langerhans islet β-cells and induces experimental diabetes mellitus in 2–4 days. For a microscopic study of degeneration of Langerhans islet β-cells of diabetic rats, biopsy from pancreas tissue of diabetic and normal rats, staining and comparison between them, were done. In this process, after collagenase digestion of pancreas, islets were isolated, dissociated and identified by dithizone method and then with enzymatic procedure by DNase and trypsin, the islet cells changed into single cells and β-cells were identified by immune fluorescence method and then assayed by flow-cytometer. Donor tissue in each step of work was prepared from 38 adult male Wistar rats weighted 250–300 g (75–90 days). Transplantation was performed in rats after 2–4 weeks of diabetes induction. In this study, the levels of insulin, C-peptide and glucose in diabetic rats reached to normal range as compared to un-diabetic rats in 20 days after transplantation of islet cells. Transplantation was performed under the cortex of testis as immunoisolated place for islet cells transplantation.  相似文献   

19.
Diabetes mellitus is one of the most common endocrine metabolic disorders. Dual endocrine deficits of impaired insulin action (insulin resistance) and inadequate insulin secretion create an environment of chronic hyperglycemia and general metabolic disarray. Oxidative stress plays an important role in diabetic pathogenesis. Oxidative stress induced by streptozotocin (STZ) has been shown to damage pancreatic beta cell and produce hyperglycemia in rats. The present study was made to evaluate the antioxidant activity of ethanolic extract of the Evolvulus alsinoides in STZ induced rats. The antioxidant activities were done by using standard protocols. For histopathological analysis, the pancreatic tissues of all experimental groups were fixed with 10 % formalin for 24 h then the samples were stained with hematoxylin–eosin for the microscopic observation. Our results showed the significant decrease in lipid peroxidation and increases in the antioxidant (both enzymatic and nonenzymatic) levels after treatment with standard as well as the E. alsinoides. There is no significant difference between control and plant alone group rats. The histopathology reports also revealed non-toxic effect and protective effect of E. alsinoides in the kidney of STZ induced diabetic rats. Our result indicated that the E. alsinoides extract effectively increased the antioxidant level thereby it prevents oxidative stress during diabetes mellitus and also it showed the protective effect on kidney of STZ induced rats. Hence it can be used to maintain the antioxidant level during diabetes mellitus.  相似文献   

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