青刺果黄酮对糖尿病小鼠肺病理变化的影响

目的 观察青刺果黄酮(FPR)对糖尿病小鼠肺病变的影响.方法 用四氧嘧啶建立糖尿病小鼠模型,并ig给予300mg·kg-1 FPR治疗,连续4周.分别于2、4周末于各组随机抽取4只小鼠宰杀,取出肺脏.肺组织用石蜡切片、HE和Gomori染色、显微镜观测.结果 糖尿病小鼠的肺弥漫性出血,肺泡腔缩小,肺泡壁增厚,支气管周围...     

青刺果的药理活性研究进展

目的:为进一步研究民族药青刺果的药理作用提供参考。方法:查阅国内、外相关文献,对青刺果的化学成分和药理作用进行分析、归纳和总结。结果:青刺果含有丰富的维生素、氨基酸、脂肪酸、矿物元素等,具有免疫调节、抗菌、降血糖、降血脂等药理活性。结论:青刺果的营养价值高,药理作用广泛,具有良好的开发利用价值。     

淫羊藿总黄酮对四氧嘧啶糖尿病小鼠降糖作用的研究

目的 探讨淫羊藿总黄酮对四氧嘧啶所致糖尿病小鼠的降糖作用.方法 以200 mg·kg-1的剂量给小鼠腹腔注射四氧嘧啶造成糖尿病模型,按照50 mg·kg-1、100 mg·kg-1的剂量连续灌胃14 d后,取血测空腹血糖、SOD、MDA,并测定肝糖原和肌糖原含量,同时进行糖耐量实验.结果 淫羊藿总黄酮能够降低糖尿病小鼠...     

消糖复康胶囊对四氧嘧啶致糖尿病大鼠血糖的影响

目的:探讨消糖复康胶囊降血糖的效果。方法:采用四氧嘧啶致大鼠糖尿病后给药,观察消糖复康胶囊对糖尿病大鼠血糖的影响。结果:消糖复康胶囊能显著降低四氧嘧啶致糖尿病大鼠的血糖。结论:消糖复康胶囊是治疗高血糖的一个有效药物。     

维药小枝玫瑰提取物对四氧嘧啶糖尿病小鼠血糖及糖耐量的影响

目的观察小枝玫瑰Branchlets Rosa rugosa Thunb.提取物对四氧嘧啶糖尿病小鼠血糖及糖耐量的影响。方法采用四氧嘧啶造模法建立糖尿病小鼠模型,将造模成功的小鼠分为8组,分别为模型组,小枝玫瑰水提物高、中、低剂量（3.70、1.85、0.93 g/kg）组,小枝玫瑰醇提物高、中、低剂量（2.75、1.37、0.70 g/kg）组和盐酸二甲双胍（阳性药,200 mg/kg）组,另取正常小鼠为对照组,造模成功3 d后开始给药,每天ig给药1次,共30 d。造模后0、10、20、28 d血糖试纸法测定空腹血糖;造模后30 d,进行葡萄糖耐量试验。结果各组小枝玫瑰提取物均能降低糖尿病小鼠血糖、改善其糖耐量,且呈一定量效关系,其中以醇提物高剂量效果最好,但不及阳性药盐酸二甲双胍。结论小枝玫瑰提取物可以降低糖尿病小鼠血糖,对糖尿病小鼠糖耐量有改善作用。     

时代血糖宁对四氧嘧啶性糖尿病动物的保护作用

目的：通过实验了解时代血糖宁的降糖作用和治疗糖尿病的作用机理。方法：静脉注射四氧嘧啶（AXN）,造成实验性糖尿病动物模型,观察ig时代血糖宁对动物血糖、胰岛素、胰高血糖素和胰岛功能的影响。结果：时代血糖宁对动物AXN性糖尿病具有明显防治作用,可显著减小大鼠糖耐量曲线下面积,降低血浆胰高血糖素,升高血清胰岛素含量。形态学观察表明,本品对大鼠胰岛β细胞的损伤可能有保护与修复功能。结论：时代血糖宁对AXN性糖尿病作用明显,可改善大鼠糖耐量异常,提高耐糖功能,减轻AXN对β细胞的损伤,增加胰岛素分泌,降低血糖,同时抑制α细胞分泌胰高血糖素,控制血糖。     

地菍水提物对四氧嘧啶致糖尿病小鼠的降糖作用

目的研究地菍的降血糖作用。方法以四氧嘧啶诱发糖尿病小鼠模型,将不同剂量地菍水提物（60、40、和20g生药·kg^-1）灌胃给药,阳性对照组给予盐酸二甲双胍（750mg·kg^-1）,连续给药10d,观察给药后的血糖值。结果地菍高剂量能明显降低四氧嘧啶致糖尿病小鼠的血糖（P〈0．01）。结论地菍对四氧嘧啶致糖尿病小鼠有一定降血糖作用。     

不同剂量四氧嘧啶对小鼠血糖的影响

考察不同剂量的四氧嘧啶对小鼠血糖的影响。小鼠72只,体质量2 2～2 6 g,在实验环境下饲养3d后,禁食(不禁水) 8h,眼眶取血,离心,取血清10 μL,葡萄糖氧化酶法测定血糖。按血糖值随机分为6组。禁食(不禁水) 2 4 h,尾静脉iv不同剂量的四氧嘧啶生理盐水溶液:6 0 ,5 0 ,4 0 ,30 ,2 0 mg·kg-1和生理盐水。5 d后,同法测定血糖。iv后血糖升高值依次为2 6 .6±5 .6 0 ,16 .6±6 .79,4 .80±3.71,2 .12±0 .2 3,0 .5 0±0 .0 70 ,0 .10±0 .0 2 mg/ d·L。结果表明四氧嘧啶剂量2 0～6 0 mg·kg-1与血糖升高值呈正相关不同剂量四氧嘧啶对小鼠血糖的影…     

民族药青刺尖抗炎活性成分的初步研究

目的结合抗炎药效学的筛选实验,研究青刺尖抗炎活性部位中的化学成分。方法95%乙醇提取,系统溶剂法及硅胶柱色谱分离,用化学和1HNMR1、3CNMR等光谱学方法鉴定化合物。结果分离并鉴定了正三十四烷醇(Ⅰ)和熊果酸(Ⅱ)两个化合物。结论化合物Ⅰ和Ⅱ为首次从青刺尖中分得。     

Hypoglycemic effect of astaxanthin from shrimp waste in alloxan-induced diabetic mice

Hypoglycemic effect of astaxanthin obtained from shrimp waste was assessed in alloxan-induced diabetic and normal mice. Animals received oral administration of astaxanthin in dose of 5 and 10?mg/kg. The plasma glucose levels were examined and compared with that of metformin and gliclazide. Administration of astaxanthin (5 and 10?mg/kg) produced significantly fall on plasma glucose in alloxan-induced diabetic mice, while a slight fall in normal mice. In normal mice, postprandial hyperglycemia was significantly suppressed by oral administration of astaxanthin, which significantly lowered the postprandial area under curve. These results demonstrate that astaxanthin is effective in controlling hypoglycemia in animal model of type 1 diabetes mellitus. Therefore, astaxanthin can be a useful natural oral agent to treat diabetes.     

葡萄糖对四氧嘧啶诱发小鼠糖尿病的拮抗作用

四氧嘧啶(alloxan ALX)是实验动物糖尿病模型的常用诱发剂。它能选择性地破坏胰岛β细胞,使胰岛分泌功能受损甚至丧失,从而使血糖升高。我们在实验中注意到,造模动物的禁食时间长短,即动物造模前的血糖水平,与动物造模后的血糖水平呈负相关。国外曾有报道,称高浓度葡萄糖具有对     

DNA-protective effects of quercetin or naringenin in alloxan-induced diabetic mice

Diabetes mellitus is associated with a high production of reactive oxygen species, which may cause oxidative DNA damage. High levels of genomic damage have been associated with liver and renal failure as well as immune-system decline. Flavonoids are effective antioxidants and may protect against several chronic diseases including diabetes. This study used the comet assay to assess the levels of DNA damage in the blood, liver and kidney cells in untreated and quercetin (QU) or naringenin treated diabetic mice. In addition, the study was designed to establish whether QU or naringenin might have a biological effect in protecting diabetic mice against oxidative stress by using survival studies to observe total body injury at the level of the organism. QU or naringenin were injected to mice intraperitoneally (i.p.) at a dose of 50mg/kg for 7days starting 2days after a single dose (75mg/kg, i.v.) alloxan injection. These findings suggest that QU or naringenin treatment resulted in a significant increase in the body weight, the haematological and immunological parameters of blood, as well as leading to 100% survival of diabetic mice. The tested flavonoids have protective effects against alloxan-induced DNA-damage in peripheral lymphocytes but not in the liver and kidney cells of diabetic mice. It might be hypothesised that diabetic mice with a high intake of flavonoid-rich foods, and specifically foods rich in quercetin or naringenin, might be relatively protected against long-term complications of diabetes due to decreased oxidative stress. Various co-operative and synergistic action mechanisms of the tested flavonoids may lead to the protection of the whole organism against diabetes.     

Anti-diabetic and hypolipidemic effects of aqueous-extract from the flower of Inula japonica in alloxan-induced diabetic mice

The anti-diabetic and hypolipidemic effects of aqueous-extract from the flower of Inula japonica (IJ) and its two fractions (IJR and IJP) were investigated in alloxan-induced diabetic mice. An oral glucose tolerance test (OGTT) of IJ was also performed in normal and diabetic mice. The results showed that IJ (1000 mg/kg), IJR (500 mg/kg) and IJP (250 mg/kg) significantly reduced blood glucose levels in diabetic mice by oral administration (p<0.01). IJ and IJP markedly decreased serum triglyceride concentrations (p<0.05) in diabetic mice. Their hypoglycemic activities were better than gliclazide (40 mg/kg) and compared with metformin (250 mg/kg). IJ raised plasma insulin levels in alloxan-induced diabetic mice. IJ, IJR and IJP significantly decreased the consumption of water and food in diabetic mice. OGTT showed that IJ slightly lowered blood glucose levels in normal mice, but significantly decreased blood glucose in diabetic mice between 60-150 min after a glucose load (p<0.05). The data indicated that IJ has both anti-diabetic and hypolipidemic effects.     

紫红獐牙菜对糖尿病小鼠抗氧化功能的影响

目的:探讨紫红獐牙菜(Swertia Punica,SP)对四氧嘧啶糖尿病模型小鼠抗氧化功能的影响.方法:建立四氧嘧啶糖尿病小鼠动物模型,观察SP对四氧嘧啶糖尿病小鼠抗氧化功能的作用,检测超氧化物歧化酶(SOD)活性和丙二醛(MDA)含量.结果:SP能提高糖尿病小鼠心、肝、肾组织SOD活性和降低MDA含量,且呈量效关系.结论:SP有显著的抗糖尿病组织过氧化的作用.     

四氢生物蝶呤在2型糖尿病肾病小鼠肾脏NO生成中的作用

目的研究四氢生物蝶呤(tetrahydrobiopterin,BH4)对2型糖尿病肾病(diabetic nephropathy,DN)小鼠肾脏中NO生成的影响,为2型DN的防治寻找新的靶点提供实验依据。方法 12周龄发展为糖尿病肾病的db/db小鼠分为2组:DAHP组(150 mg·kg-1)、DN组(5%DMSO生理盐水)。同周龄db/m小鼠作NS组(5%DMSO生理盐水)。各组小鼠腹腔注射给药7 d,处死。化学比色法检测小鼠空腹血糖、24 h尿蛋白、血肌酐及iNOS酶活性;高效液相色谱法检测BH4水平;免疫组化法及Western bolt法检测iNOS蛋白;Griess法检测NO水平。结果 DN组血糖、血肌酐、24h尿量及尿蛋白、BH4水平、iNOS蛋白及酶活性、NO水平均明显高于NS组;DAHP组24 h尿量及尿蛋白、BH4水平、iNOS蛋白及酶活性、NO水平均明显低于DN组。结论在自发性2型DN小鼠肾脏中,BH4含量明显增加,促使iNOS蛋白表达及酶活性增加,从而导致NO生成增多,引起多尿及蛋白尿。