新疆毛菊苣乙酸乙酯萃取物对小鼠降糖作用的研究

目的 探讨新疆毛菊苣乙酸乙酯萃取物(CEE)对糖尿病小鼠的降糖作用。方法 95%乙醇浸提得毛菊苣根部提取物;使用乙酸乙酯萃取得CEE;取昆明种小鼠,随机分为正常对照组、模型对照组、CEE小剂量组(150 g·kg^-1)、CEE中剂量组(300 g·kg^-1)、CEE大剂量组(600 g·kg^-1)和二甲双胍组(300 mg·kg^-1);正常对照组给予0.9%氯化钠溶液,其余各组腹腔注射四氧嘧啶200 mg·kg^-1建立小鼠糖尿病模型;记录小鼠体质量变化,以5 d为间隔测定血糖值;实验期末对小鼠进行糖耐量及胰岛素耐量实验;检测小鼠血清总胆固醇(TC)、三酰甘油(TG)、低密度脂蛋白胆固醇(LDL-C)、高密度脂蛋白胆固醇(HDL-C)、胰岛素(INS)、丙二醛(MDA)、一氧化氮(NO)水平。结果 小鼠造模成功率为88.57%,死亡率为11.43%。除正常对照组外,其余各组体质量均呈下降趋势,四氧嘧啶对小鼠体质量具有显著的影响;药物干预后,CEE对糖尿病小鼠体质量有明显的影响;根...     

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。     

灯盏花素对四氧嘧啶致糖尿病小鼠的降血糖作用研究

目的研究灯盏花素对糖尿病小鼠的降血糖作用。方法小鼠腹腔注射四氧嘧啶建立糖尿病小鼠模型,以高、中、低剂量灯盏花素对糖尿病小鼠灌胃4周,测定小鼠的空腹血糖、葡萄糖耐量、血清中胰岛素水平、胰岛素分泌指数和血清SOD含量,并制作小鼠胰腺病理切片。结果成功建立糖尿病小鼠模型,灯盏花素能显著降低糖尿病小鼠的血糖水平(高剂量组P<0.01,中剂量组P<0.05);提高葡萄糖耐量水平(P<0.05)并使血清中胰岛素含量明显升高;提高胰岛素分泌指数(高剂量组P<0.01,中剂量组P<0.05);提高血清SOD含量(P<0.05);同时能对四氧嘧啶所致选择性胰岛损伤具有保护和修复作用。结论灯盏花素对糖尿病小鼠具有良好的降血糖作用。     

南瓜多糖对四氧嘧啶致糖尿病大鼠降糖作用研究

目的 观察南瓜多糖对四氧嘧啶型糖尿病大鼠的降糖作用.方法 选用雄性Wistar大鼠（190～240 g）,且在日照时间10 h以上的阳光充足的条件下饲养,对大鼠采用两次给药法腹腔注射四氧嘧啶,给药剂量分别为第1天120mg/kg,第2天100mg/kg,建立四氧嘧啶型糖尿病模型,用葡萄糖氧化酶法检测血糖值,用放射免疫分析法测定胰岛素、胰高血糖素,观察各组的降糖效果.结果 南瓜多糖两种剂量均可降低四氧嘧啶型糖尿病大鼠的血糖（包括禁食空腹和进食以后,P＜0.05）,且能明显提高血中胰岛素水平,降低血胰高血糖素浓度.结论 南瓜多糖对糖尿病大鼠有降糖作用.     

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...     

当归多糖对四氧嘧啶糖尿病小鼠的降血糖作用

目的: 研究当归多糖对四氧嘧啶糖尿病小鼠的降血糖作用.方法: 四氧嘧啶糖尿病小鼠和正常小鼠分别灌服当归多糖60,120 mg·kg-1后不同时间测定血糖.结果: 120 mg·kg-1当归多糖对正常小鼠和四氧嘧啶糖尿病小鼠的血糖有明显影响,分别使其下降40%和41%.结论: 当归多糖具有降血糖作用.     

杨梅苷对四氧嘧啶模型小鼠降血糖作用的初步研究

目的研究杨梅苷对四氧嘧啶所致糖尿病小鼠的降血糖作用。方法用四氧嘧啶制造糖尿病小鼠模型、采用葡萄糖氧化酶法测定血糖。结果杨梅苷可显著降低四氧嘧啶所致糖尿病小鼠的血糖。结论杨梅苷对四氧嘧啶所致糖尿病小鼠有降血糖作用。     

朝天委陵菜乙醇提取物对CCl4致小鼠肝损伤的保护作用

目的 研究朝天委陵菜乙醇提取物(EEPS)对四氯化碳(CCI4)致小鼠肝损伤的保护作用.方法 采用CCI4急性肝损伤模型,小鼠ig给予不同剂量的EEPS,并以联苯双酯为阳性对照,测定小鼠血清中丙氨酸氨基转换酶(ALT)、天门冬氨酸转换酶(AST)的活性及肝组织中丙二醛(MDA)的含量和过氧化物歧化酶(SOD)的活性.结果 不同剂量的EEPS能够抑制CCl4诱导的肝损伤小鼠血清中AST和ALT酶活性的升高,且能有效地抑制脂质过氧化,升高SOD的活性.结论 EEPS对CCl4致小鼠的肝损伤具有保护作用.     

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     

太子参多糖对四氧嘧啶糖尿病小鼠的治疗作用

目的观察太子参多糖对四氧嘧啶糖尿病小鼠的治疗作用。方法选用雄性小鼠,尾静脉注射四氧嘧啶90 mg.kg-1建立小鼠糖尿病模型,太子参多糖按0.375、0.75、1.5 g.kg-1三种剂量给药,测定了糖尿病小鼠体重、空腹血糖、肝糖原含量以及免疫器官脾脏和胸腺的脏体指数。结果太子参多糖可显著降低糖尿病小鼠血糖,增加体重,增加肝糖原含量,增加脾脏和胸腺指数。结论太子参多糖对糖尿病小鼠具有显著的治疗作用。     

魔芋精粉对四氧嘧啶糖尿病大鼠的降糖作用

目的：研究魔芋精粉对四氧嘧啶糖尿病大鼠的降糖作用,方法：给四氧嘧啶糖尿病大鼠魔芋精粉1．5g/(kg.d).3.0g/(kg.d)连续4周后,测定其空腹血糖,血清胰岛素,糖耐量试验以及切片观察胰岛形态,结果：给药2周后,空腹血糖显著降低,4周后糖耐量能力明显增强,但对血清胰岛素的影响不大,病理切片结果提示;胰岛形态,结构明显修复。结论：魔芋精粉对四氧嘧啶尿病大鼠有标本兼治的功效。     

荔枝核对正常小鼠和四氧嘧啶高血糖小鼠的降糖作用

荔枝核的水提取液５ｇ·ｋｇ－１，ｉｇ，既能降低正常小鼠的血糖，又能降低四氧嘧啶所致小鼠的高血糖。其效应分别与格列本脲和苯乙双胍几乎等效     

鬼针草提取物对糖尿病大鼠降糖活性的初步观察

目的研究鬼针草乙酸乙酯提取物的降糖活性。方法注射链脲佐菌素建立大鼠糖尿病模型,观察鬼针草乙酸乙酯提取物对血糖值的影响。结果鬼针草乙酸乙酯提取物能显著降低糖尿病大鼠的血糖值。结论鬼针草乙酸乙酯提取物有显著的降糖活性。     

Hypoglycemic effect of aqueous extract of Parthenium hysterophorus L. in normal and alloxan induced diabetic rats

Objectives:

To study the effects of Parthenium hysterophorus L. flower on serum glucose level in normal and alloxan induced diabetic rats.

Materials and Methods:

Albino rats were divided into six groups of six animals each, three groups of normal animals receiving different treatments consisting of vehicle, aqueous extract of Parthenium hysterophorus L. flower (100 mg/kg) and the standard antidiabetic drug, glibenclamide (0.5 mg/kg). The same treatment was given to the other three groups comprising alloxan induced diabetic animals. Fasting blood glucose level was estimated using the glucose oxidase method in normal and alloxan induced diabetic rats, before and 2 h after the administration of drugs.

Results:

Parthenium hysterophorus L. showed significant reduction in blood glucose level in the diabetic (P<0.01) rats. However, the reduction in blood glucose level with aqueous extract was less than with the standard drug glibenclamide. The extract showed less hypoglycemic effect in fasted normal rats, (P<0.05).

Conclusion:

The study reveals that the active fraction of Parthenium hysterophorus L. flower extract is very promising for developing standardized phytomedicine for diabetes mellitus.     

两色金鸡菊乙酸乙酯提取物对STZ诱导的糖尿病SD大鼠的影响

目的观察两色金鸡菊乙酸乙酯提取物对糖尿病大鼠糖脂代谢及肝脏、肾脏功能的影响。方法高糖高脂喂养联合腹腔注射链脲佐菌素(streptozotocin,STZ)建立2型糖尿病SD大鼠模型,成模大鼠随机分6组(正常组、模型组、两色金鸡菊乙酸乙酯提取物高、中、低3个剂量组0.15、0.3、0.6 g·kg-1、阳性药二甲双胍0.16 g·kg-1组)。正常组和模型组灌胃生理盐水,其余组每天灌胃给药两色金鸡菊提取物,每周测体重及随机血糖,给药4周后处死,收集大鼠血清,检测血脂四项、肝功肾功指标、血清胰岛素及糖化血红蛋白水平。结果两色金鸡菊乙酸乙酯提取物可有效降低糖尿病大鼠的随机血糖和糖化血红蛋白及血清甘油三酯、低密度脂蛋白、血清总蛋白、血肌酐及血尿酸水平,同时能升高糖尿病大鼠血清白蛋白的含量。结论两色金鸡菊乙酸乙酯提取物能降低糖尿病SD大鼠的血糖血脂,保护其肝肾功能。     

Hypoglycemic and antioxidant effects of Rheum franzenbachii extract in streptozotocin-induced diabetic rats

The hypoglycemic and antioxidant effects of ethanol extract from the roots and rhizomes of Rheum franzenbachii Münt. (Polygonaceae) were evaluated in streptozotocin-induced diabetic rats. Effects of repeated oral administration of ethanol extract (125, 250, and 500?mg/kg body weight) on the plasma glucose level (PGL), oral glucose tolerance test (OGTT), malondialdehyde (MDA), reduced glutathione (GSH), superoxide dismutase (SOD), and catalase (CAT) in diabetic rats were examined. It was found that administration of ethanol extract (125, 250, and 500?mg/kg) produced a significant fall in PGL, AUC, and MDA, while elevating the GSH levels and SOD and CAT activities in diabetic rats. The dose of 500?mg/kg was identified as the most effective dose, with a decrease of 65.8 and 44.0% in PGL and MDA, and elevation of 72.6, 75.0, and 51.5% in GSH level and SOD and CAT activities, respectively, after 14 days of ERF administration in diabetic rats. Moreover, the OGTT studies showed a maximum reduction in PGL and AUC. From the active extract of Rheum franzenbachii, two stilbenes, desoxyrhapontigenin (1) and desoxyrhaponticin (2), were isolated as major constituents. The present study concludes that the ethanol extract of roots and rhizomes from Rheum franzenbachii had significant hypoglycemic and antioxidant effects.     

苋桑饮对糖尿病小鼠的降血糖作用研究

目的 评价中药制剂苋桑饮的降血糖疗效.方法 80只雄性小鼠随机选取12只为空白对照组,其余68只采用四氧嘧啶造模.取符合空腹血糖值≥11.1 mmol/L的小鼠60只,随机分为模型组、二甲双胍组及苋桑饮低、中、高剂量组,每组12只,分别以0.9%氯化钠溶液20 mL/kg、二甲双胍0.15 g/kg及苋桑饮0,8、1.6和3.2 g/kg灌胃给药.以给药前后受试小鼠的血糖和体征(包括体重、摄食量和饮水量)变化评价苋桑饮的疗效.结果 与给药前相比,给药后苋桑饮中、高剂量组小鼠血糖水平及摄食量和饮水量均较模型组减低(P<0.05或P<0.01);苋桑饮高荆量组体重减轻程度较模型组轻(P<0.05).结论 苋桑饮能有效降低糖尿病小鼠的血糖水平,并且可能具有改善糖尿病小鼠体征的作用.     

Hypoglycemic activity of Ziziphus mauritiana aqueous ethanol seed extract in alloxan-induced diabetic mice

Ziziphus mauritiana Lamk. (Rhamnaceae) is a fruit tree that has been used as folkloric medicine for many ailments and diseases. In the present study, the hypoglycemic effect of seed extract of Ziziphus mauritiana in alloxan-induced diabetic mice was assessed. Seed extract was administered orally at doses of 100, 400, and 800?mg/kg body weight (bw) and also in combination with glyburide (800?mg/kg seed extract and 10?mg/kg glyburide) to different groups of mice (normal and alloxan-treated diabetic mice). Their blood glucose level (in acute and sub-acute study), body weight, and mortality rate were monitored. Oral glucose tolerance test (OGTT) was also performed. Oral administration of extract alone or in combination with glyburide reduced the blood glucose level in all the diabetic mice after acute and sub-acute (28 days) administration. Administration of the extract reduced the weight loss and mortality rate during the sub-acute study. The results of blood glucose level, loss in body weight, and mortality rate were more pronounced in the group treated with combination (800?mg/kg seed extract and 10?mg/kg glyburide). The extract also augmented the glucose tolerance in both normal and diabetic mice. These results suggest that the extract possesses synergistic hypoglycemic activity.