大黄酸对db/db小鼠早期相胰岛素分泌的影响

目的探讨大黄酸对db/db小鼠的降血糖作用及对胰岛素分泌的影响。方法 30只4周龄db/db小鼠随机分为2组各15只,对照组给予1%纤维素钠,治疗组给予120 mg/kg大黄酸,连续鼻饲灌胃给药8周。投药结束后行经腹腔葡萄糖耐量试验(IPGTT)并测定相应胰岛素水平,其曲线下面积(AUC)代表胰岛素分泌水平,并通过计算IPGTT的0～30 min胰岛素曲线下面积评估早期相胰岛素分泌功能。结果与对照组相比,治疗组糖负荷后0,30,60和120 min的血糖水平明显下降,而30,60和120 min的胰岛素水平明显升高,尤其是早期相胰岛素水平升高更明显。结论早期大黄酸治疗可以明显改善db/db小鼠的葡萄糖耐量,恢复早期相胰岛素分泌功能。大黄酸的这一作用可能使之成为一种新的针对糖尿病的预防或治疗手段。     

翻白草水提取物对自发2型糖尿病db/db小鼠降糖作用的研究

目的 观察翻白草水提取物对2型糖尿病db/db小鼠空腹血糖、血清胰岛素及胰岛素敏感指数的影响.方法 采用公认的自发2型糖尿病模型db/db小鼠,随机分为4组:翻白草高剂量组(400 mg·kg-1·bw-1)、翻白草低剂量组(200 mg·kg-1·bw-1)、吡格列酮组(4.05 mg·kg-1·bw-1)及模型组,...     

鱼腥草合剂对db/db糖尿病小鼠肾损伤的影响

目的:比较鱼腥草合剂醇提液和水提液对db/db小鼠肾脏损伤的作用,并探讨鱼腥草合剂防治2型糖尿病肾病的机制。方法:8周龄的db/m和db/db小鼠分为4组:db/m正常小鼠对照组;db/db糖尿病小鼠对照组;db/db糖尿病小鼠鱼腥草合剂醇提液156 mg.kg-1治疗组;db/db糖尿病小鼠鱼腥草合剂水提液156 mg.kg-1治疗组。经鱼腥草合剂ig治疗4,8周后,观察小鼠体重、24 h尿白蛋白(Alb),血清胰岛素(FINS)、空腹血糖(FPG)、胰岛素敏感指数(IAI)等生化指标的情况。结果:鱼腥草合剂在治疗8周后,血糖、胆固醇、24 h尿白蛋白与对照组相比,均有下降,改善了高脂血症、高血糖症、高胰岛素血症。结论:鱼腥草合剂具有改善糖尿病肾病的作用,其作用机制可能与降低微量尿白蛋白及改善胰岛素抵抗相关。     

Anti-diabetic atherosclerosis effect of Prunella vulgaris in db/db mice with type 2 diabetes

Diabetes mellitus is the leading cause of vascular complications such as atherosclerosis. This study was designed to investigate whether Prunella vulgaris (APV) would inhibit diabetic atherosclerosis in db/db mice with type 2 diabetes. The db/db mice were treated with high fat/high cholesterol (HFHC) diet and an aqueous extract of APV (100 and 200 mg/kg/day) for eight weeks to examine the long-term effect on metabolic abnormalities and diabetic atherosclerosis. APV treatment markedly lowered blood glucose and systolic blood pressure. The db/db mice experienced an increase in blood urea nitrogen as well as a decrease of creatinine clearance, the latter of which was restored by treatment with APV. Treatment with APV markedly decreased total plasma cholesterol, triglyceride, and LDL-cholesterol and also increased the HDL-cholesterol. In addition, malondialdehyde and TGF-β1 were decreased by treatment of APV. On the other hand, total NO level was decreased in db/db mice. However, the NO level was increased by treatment with APV, suggesting an association with vascular dysfunction. Vascular relaxation of aortic rings by acetylcholine or SNP-inducement was ameliorated by APV in a dose-dependent manner. Damage of vascular intima and hypertrophic of media were observed in db/db mice; however its dysfunction was improved by the treatment of APV. APV treatment significantly reduced the aortic expressions of ICAM-1, VCAM-1, ET-1, and nitrotyrosine. Furthermore, expression of eNOS in aortic was remarkably increased by APV treatment. Taken together, APV suppressed hyperglycemia and diabetic vascular dysfunction in HFHC diet-db/db mice. The present data suggest that Prunella vulgaris may prevent development of diabetic atherosclerosis.     

白术多糖对自发性2型糖尿病小鼠血糖及相关指标的影响

目的:观察白术多糖对自发性2型糖尿病db/db小鼠的降血糖作用。方法:以db/db 2型糖尿病小鼠为研究对象,分为模型组、阳性药组(盐酸二甲双胍250 mg·kg-1)、白术多糖3个剂量组(300,90,30 mg·kg-1),连续ig给予相应药物4周。给药期间观察小鼠的一般体征及体重,于给药第2,4周检测空腹血糖(FBG);给药4周后,检测小鼠空腹血浆胰岛素(Ins)以及口服糖耐量(OGTT)的变化,并根据血糖计算胰岛素敏感性指数(ISI)。结果:与模型组相比,白术多糖(300,90 mg·kg-1)给药期间db/db小鼠整体状态较好,毛色较光滑,饮食饮水量降低,明显降低db/db小鼠空腹血糖、血浆胰岛素,升高胰岛素敏感性指数,降低小鼠在给予葡萄糖后各个时间点(0.5,2 h)血糖值及血糖曲线下面积(AUC),(P0.05,P0.01);但对体重无明显影响。结论:白术多糖能够有效降低db/db 2型糖尿病小鼠的空腹血糖,降低血浆胰岛素水平,增加胰岛素敏感性指数,改善糖耐量,其降糖作用机制之一可能是通过降低血浆胰岛素、增加胰岛素的敏感性。     

血脂康对db/db糖尿病小鼠坐骨神经传导速度影响的研究

目的探讨血脂康对db/db糖尿病小鼠坐骨神经传导速度的影响。方法将12周龄db/db小鼠随机分为3组,分别给予血脂康低剂量（0.3 g/kg）、高剂量（0.6 g/kg）及安慰剂灌胃8周,同周龄db/m小鼠作为非糖尿病对照组。投药8周后行糖耐量试验,治疗前后分别测定db/db糖尿病小鼠及db/m小鼠坐骨神经的传导速度。结果与db/db对照组比较,血脂康不同剂量组治疗8周后总胆固醇（TC）、低密度脂蛋白（LDL-C）、三酰甘油（TG）及空腹血糖下降（P〈0.05）。糖负荷120 min后葡萄糖曲线下面积（AUCg）和胰岛素曲线下面积（AUCins）均低于db/db对照组,而血脂康两组之间比较无统计学意义。血脂康两组治疗后坐骨神经传导速度明显高于对照组,而高剂量组优于低剂量组。结论血脂康在降低血脂、血糖的同时,能提高坐骨神经传导速度,对周围神经具有保护作用,其作用独立于调脂降糖。     

An aqueous extract of Portulaca oleracea ameliorates diabetic nephropathy through suppression of renal fibrosis and inflammation in diabetic db/db mice

Diabetic nephropathy is one of the most common microvascular complications of diabetes and the leading cause of end-stage renal disease. In the present study, we investigated the renoprotective effect of the aqueous extract of Portulaca oleracea (AP) on diabetic nephropathy accelerated by renal fibrosis and inflammation in type 2 diabetic db/db mice. The mice were treated with AP (300 mg/kg/day, p.o.) for ten weeks to examine the long-term effects on diabetic nephropathy and renal dysfunction. We found that AP treatment markedly lowered blood glucose to 412 ± 11.4 mg/dl and plasma creatinine level to 2.3 ± 0.8 mg/dl compared to db/db mice (p < 0.05, p < 0.01, respectively). This study also showed that treatment with AP significantly decreased water intake and urine volume in diabetic db/db mice (p < 0.05). In immunohistological study, the renal expression of transforming growth factor-β1 (TGF-β1), advanced glycation end products (AGE), and intercellular adhesion molecule (ICAM)-1 markedly increased in the renal cortex of untreated db/db mice (p < 0.01). In contrast, AP treatment significantly reduced these expressions to 50 ± 2.1%, 48 ± 2.8%, 61 ± 1.1%, respectively (p < 0.01). Furthermore, NF-κB p65 activation in renal tissues markedly increased in untreated db/db mice, which was significantly suppressed by AP treatment. Taken together, these findings suggest that AP attenuates diabetic nephropathy through inhibition of renal fibrosis and inflammation in db/db mice.     

Hypoglycemic and hypolipidemic action of Du-zhong (Eucommia ulmoides Oliver) leaves water extract in C57BL/KsJ-db/db mice

The anti-diabetic efficacy of Du-zhong (Eucommia ulmoides Oliver) leaves water extract (WDZ) was investigated in type 2 diabetic animals. The WDZ was given to C57BL/KsJ-db/db mice as a dietary supplement based on 1% dried whole Du-zhong leaves (0.187 g WDZ/100 g standard diet) for 6 weeks. The WDZ supplementation significantly lowered the blood glucose level and enhanced the glucose disposal in an intraperitoneal glucose tolerance test. The plasma insulin and C-peptide levels were significantly higher in the WDZ group than in the control group, while the glucagon level was lower. The hepatic glucokinase activity was significantly higher in the WDZ group, whereas, the glucose-6-phosphatase and phosphoenolpyruvate carboxykinase activities were significantly lower. The WDZ supplementation also significantly lowered the hepatic fatty acid synthase, HMG-CoA reductase and ACAT activities compared to the control group, while it elevated the lipoprotein lipase activity in the skeletal muscle. The WDZ also altered the plasma and hepatic lipid levels by lowering the cholesterol and triglyceride concentrations, while elevating the plasma HDL-cholesterol level. Therefore, these results suggest that WDZ may partly ameliorate hyperglycemia and hyperlipidemia with type 2 diabetes through increasing glycolysis, suppressing gluconeogenesis and the biosynthesis of fatty acid and cholesterol in the liver.     

db／db2型糖尿病小鼠的肠道、门脉血中LPS水平与血糖的相关性分析

目的：探讨LPS水平与2型糖尿病血糖相关性。方法：采用db／db2型糖尿病小鼠db／db组和对照组db／m,收集门脉血、结肠组织并取匀浆液,用酶联免疫法（ELISA）测定肠道、门脉血中脂多糖的水平;用血糖仪测血糖值。结果：db／db模型组与db／m组相比,肠道LPS水平高（P〈0．05）,门脉血中LPS水平高（P〈0．05）,肠道比门脉血中LPS水平高（P〈0．05）,FPG是高的（P〈0．05）,结肠、门脉血中LPS分别与血糖成正相关（r=0．72,P〈0．01;r=0．71,P〈0．01）。结论：LPS水平与2型糖尿病的血糖有关,可为糖尿病的机制的研究提供有力的依据。     

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??OBJECTIVE To investigate the Polygonum capitatum's influences on the related indicators in db/db mice which is the obesity model of type 2 diabetes mellitus. METHODS Randomly dividing the mice into 5 groups:model group, rosiglitazone hydrochloride group, low-, moderate- and high-dose groups of Polygonum capitatum (5, 10, 20 g??kg^-1), make the db/m mice as blank control. Give the medicine for four weeks. The body weight, blood sugar were determined every week.At the end of fourth week, measuring the glucose tolerance and INS, IL-6 in serum. After all the mice were killed, testing the cholesterol and triglyceride in liver and skeletal muscle and then collecting the liver tissue for HE staining. At the meantime, the expression level of AMPK and GLUT4 in liver were detected by Q-PCR. RESULTS Polygonum capitatum can improve the body weight, blood sugar and glucose tolerance of db/db mice as well as the content of INS and IL-6 in serum, but increase the content of SOD and decrease the content of MDA in mice, furthermore, the cholesterol and triglyceride levels in the liver and skeletal muscle were also declined. HE staining showed that Polygonum capitatum could reduce the number of vacuoles in the liver of db/db mice, and make its shape more complete and ordered. What's more, raising the expression of AMPK and GLUT4 in the liver. CONCLUSION Polygonum capitatum can improve the condition of insulin resistance state, alleviate inflammation and advance the ability of db/db mice, which can also reduce the number of vacuoles in liver, and relieve the tissue lipid metabolic disorder. Meanwhile, Polygonum capitatum can promote the uptake of glucose in liver tissues, which is resulted from up-regulation of expression in hepatic AMPK and GLUT4 gene.     

血脂康胶囊对db/db小鼠胰岛第一时相分泌及β细胞含量的影响

目的:探讨血脂康胶囊对于db/db小鼠胰岛第一时相分泌及β细胞含量的影响。方法:选择40只12周龄清洁级雄性db/db小鼠,20只同周龄同窝出生的db/m小鼠,为非糖尿病对照组,将db/db小鼠随机分为血脂康组、安慰剂组,分别给予1次/d的血脂康胶囊0.3g/(kg·d)和安慰剂(5%阿拉伯胶)混悬液灌胃;db/m小鼠1次/d灌服同等体积的生理盐水。6周后采用离体胰岛灌流系统评估胰岛第一时相分泌,运用免疫组织化学及胰岛测量学分析胰岛β细胞含量。结果:治疗6周后血脂康组胰岛第一时相分泌得到显著改善,并可显著地减少了胰岛β细胞的丢失。结论:血脂康胶囊具有改善胰岛素第一时相分泌,保护β细胞功能等作用。     

蛇菰乙醇提取物降血糖作用的实验研究

目的：探讨蛇菰95%乙醇提取物(SHG)的降血糖作用及其机制。方法：以四氧嘧啶诱导雄性ICR小鼠形成糖尿病模型。用葡萄糖氧化酶法测定血糖浓度,用同位素放射免疫法测定血清胰岛素浓度。给动物口服SHG相当于生药20,30 g·kg^-1体重连续7～10 d,以动物不禁食和禁食2.5 h的血糖水平和口服葡萄糖负荷后的血糖水平,观察SHG对机体血糖及糖耐量的影响；以腹腔注射葡萄糖负荷后的血糖和血胰岛素水平,评价SHG对机体高血糖诱导血胰岛素水平的影响；以口服蔗糖耐量和口服淀粉耐量评价药物对糖吸收的影响。结果：SHG可显著降低正常和糖尿病小鼠的餐后血糖和空腹血糖水平。动物口服蔗糖和口服淀粉耐量实验中,SHG可明显降低并后移蔗糖或淀粉负荷后的血糖峰值,减少血糖-时间曲线下面积(AUC)。动物口服葡萄糖耐量实验中,SHG可显著降低葡萄糖负荷后血糖的峰值,减少AUC。在正常小鼠腹腔注射葡萄糖耐量实验中,SHG组平均血糖上升百分数明显低于对照组,但血胰岛素水平与对照组无明显差异。结论：SHG显著降低正常和糖尿病小鼠的餐后血糖和空腹血糖、改善葡萄糖耐量。SHG控制血糖作用的机制可能与抑制肠道α-葡萄糖苷酶和增强体内葡萄糖代谢有关。     

黄芪葛根汤对实验性糖尿病及胰岛素抵抗的影响

目的:观察黄芪葛根汤对实验性糖尿病及胰岛素抵抗(IR)的影响。方法:建立链脲佐菌素(STZ)ip所致糖尿病小鼠模型,sc氢化可的松琥珀酸钠(HCSS)诱导的IR小鼠模型,以及采用给大鼠1次ip小剂量链脲佐菌素(STZ),并加饲高热量饮食(富含脂肪和蔗糖),制备2型糖尿病(T2DM)伴胰岛素抵抗(IR)大鼠模型,观察黄芪葛根汤对糖脂代谢以及IR的影响。结果:黄芪葛根汤降低糖尿病小鼠的空腹血糖(FBG),提高糖耐量(OGTT),改善小鼠对胰岛素的敏感性。黄芪葛根汤能显著降低2型糖尿病胰岛素抵抗大鼠的FBG,提高OGTT,降低高胰岛素水平,提高胰岛素耐量,增加胰岛素敏感指数(ISI)和降低IR指数(HOMA-IR)指数。同时,黄芪葛根汤还可调节血脂、下调血清中游离脂肪酸(FFA)的水平。结论:黄芪葛根汤通过改善糖脂代谢、提高胰岛素的敏感性,发挥其治疗糖尿病及胰岛素抵抗的作用。     

Antihyperglycemic and antihyperlipidemic action of cinnamaldehyde in C57blks/j Db/db mice

Objective

To investigate the effects of cinnamaldehyde (CA), an active and major compound in cinnamon, on glucose metabolism and insulin resistance in C57BLKS/J db/db mice.

Methods

Sixteen male C57BLKS db/db mice were randomly divided into control and CA treatment groups. CA was given (20 mg · kg⁻¹ · day⁻¹, p. o.) for 4 weeks. Pure water was given to control and db/+ mice. Subsequently, the levels of fasting blood glucose (FBG), fasting serum insulin, triglyeride, cholesterol, low-density lipoprotein -cholesterol (LDL-C), high-density lipoprotein-cholesterol (HDL-C), and free fatty acids (FFA), as well as the mRNA content of adiponectin and tumor necrosis factor (TNF)-α in adipose tissue, glucose transporter type 4 (GLUT-4) in skeletal muscle, and protein expressions of Akt, phospho-Akt (Thr308), AMPKα, phospho-AMPKα (Thr172) in skeletal muscle were measured.

Results

1) CA decreased serum levels of FBG and insulin as well as body weight in db/db mice; 2) CA increased serum HDL-C levels; 3) CA significantly decreased the mRNA expression of TNF-α in adipose tissue and upregulated mRNA expression of GLUT-4 in skeletal muscle; 4) protein expression of p-Akt was increased in CA-treated mice, but Akt, AMPKα and p-AMPKα showed no change.

Conclusion

CA has antihyperglycemic and antihyperlipidemic actions in db/db mice and could be useful in the treatment of type-2 diabetes.     

Anti-hyperglycemic effects and mechanism of Bidens pilosa water extract

Aim of study

Bidens pilosa has traditionally been used as an anti-diabetic phytomedicine. However, its alleged benefits and mechanism remain elusive. This study aimed to evaluate the effect and action of Bidens pilosa water extract on type 2 diabetes.

Materials and methods

A daily dose of Bidens pilosa water extract or glimepiride, a positive control, was given orally to C57BL/KsJ-db/db mice once or for 28 days. Levels of blood glucose, serum insulin, and glycosylated hemoglobulin A1C, glucose tolerance, and islet structure were used to evaluate its anti-diabetic effects in db/db mice. Rat pancreatic islets and streptozocin-treated mice were tested for insulin-releasing mechanism of Bidens pilosa water extract.

Results

A daily dose of Bidens pilosa water extract given once or for 28 days significantly decreased blood glucose levels and increased serum insulin levels in db/db mice. Besides, 28-day treatment with Bidens pilosa water extract significantly improved glucose tolerance, decreased HbA1C levels and protected islet structure in db/db mice. Mechanism study showed that Bidens pilosa water extract stimulated insulin secretion via pancreatic islets.

Conclusions

Our results suggest that Bidens pilosa water extract ameliorates type 2 diabetes in db/db mice via regulation of insulin secretion and islet protection.     

血脂康对db/db糖尿病小鼠周围神经病变的保护作用研究

目的探讨血脂康对db/db糖尿病小鼠周围神经病变的治疗作用及机制。方法将12周龄的db/db小鼠随机分为3组,分别给予血脂康0.3 g/kg(低剂量)、0.6 g/kg(高剂量)及安慰剂灌胃8周治疗,同周龄的db/m小鼠作为正常组。投药8周观察血脂康对db/db糖尿病小鼠空腹血糖、血脂、空腹胰岛素及坐骨神经传导速度的影响,同时检测坐骨神经组织中超氧化物歧化酶(SOD)活性、丙二醛(MDA)含量及谷胱甘肽过氧化物酶(GSH-Px)活性。结果与db/db对照组比较,血脂康低高剂量组治疗8周后TC、LDL-C、空腹血糖和空腹胰岛素均下降,但2组之间比较无明显差异;血脂康治疗后坐骨神经传导速度、SOD活性和GSH-Px活性均增高,MDA降低,其中高剂量组坐骨神经传导速度快于低剂量组,GSH-Px活性高于低剂量组。结论血脂康在调脂降糖的同时能提高坐骨神经传导速度,减轻神经组织氧化应激,对周围神经具有保护作用,其作用独立于调脂降糖。     

橄榄苦甙改善db/db小鼠肝脏胰岛素抵抗作用机制研究

目的：本研究主要观察橄榄苦甙（OL）改善肥胖db/db小鼠胰岛素抵抗的作用机制。方法：6-8周龄雄性db/db小鼠12只,按体质量和随机血糖随机分为OL组和模型组,每组6只,另设同周龄C57BL/6J小鼠6只为正常组。OL组灌服OL水溶液50mg·kg^-1体重,其余组给以等剂量生理盐水。治疗4周后,检测各组小鼠的空腹血糖（FBG）、胰岛素水平、计算胰岛素抵抗指数以及口服葡萄糖耐量实验（OGTT）,取肝脏组织,采用RT-PCR、Western Blot检测相关基因和蛋白表达。结果：治疗4周后,与模型组比较,OL组体重、空腹血糖、血清胰岛素水平和胰岛素抵抗指数显著降低（P<0.05或P<0.01）;OGTT实验后,OL组血糖明显低于模型组（P<0.01）;OL组小鼠肝脏组织InsR、IRS-1、GLUT-2 mRNA和蛋白表达显著升高（P<0.01）。结论：OL通过提高肝脏InsR、IRS-1、GLUT-2 mRNA和蛋白的表达起到降低血糖、改善胰岛素抵抗的作用。     

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.     

复方石斛合剂单次给药对db/db小鼠胰岛素信号的影响

目的:探讨复方石斛合剂单次给药对db/db小鼠胰岛素信号的影响,并探讨相关的作用机制。方法:选取30只14~16周龄雄性db/db小鼠,按空腹血糖及体重随机分成模型组、中药1方组、中药2方组;另10只db/m小鼠为正常组。以复方石斛合剂1方与2方单次给药后,从整体水平观察葡萄糖耐量(OGTT)的变化;单次给药30 min与60 min后,从细胞水平观察肝细胞6-磷酸果糖激酶-1(PFK)与丙酮酸脱氢酶(PDH)活性,胰岛素受体(InsR)与Akt蛋白磷酸化水平的变化。结果:与正常组比较,模型组db/db小鼠OGTT 0,30,60,120 min的血糖水平显著升高,肝细胞PFK与PDH活性显著降低,30 min与60 min InsR与Akt蛋白表达显著降低(P0.01);与模型组比较,石斛合剂1方和2方单次给药均能明显降低db/db小鼠OGTT 60,120 min的血糖水平(P0.05,P0.01),改善葡萄糖耐量;石斛合剂1方和2方单次给药均增加肝细胞PFK与PDH活性,促进InsR Tyr1150/1151与Akt Thr308和Ser473磷酸化水平,呈现药物时间依赖效应(P0.05,P0.01)。结论:复方石斛合剂1方,2方分别单次给药都能提高db/db小鼠的葡萄糖耐量,增加肝细胞PFK和PDH酶活性,其机制可能与增加InsR Tyr150/1151与Akt Thr308和Ser473磷酸化,改善胰岛素信号的快速转导有关。     

柿叶多糖对糖尿病小鼠降血糖作用及其机制研究

目的:研究柿叶多糖对链脲佐菌素糖尿病小鼠的降血糖作用及其作用机制。方法:将实验小鼠随机分成5组:正常对照组、模型组、格列本脲组(25 mg.kg-1.d-1),柿叶多糖低、高剂量组(150,600 mg.kg-1.d-1)。ig给于药物15 d,并在相应时间采血测定空腹血糖(FBG)、空腹胰岛素(FINS)、胰岛素敏感指数(ISI)、丙二醛(MDA)、超氧化歧化酶(SOD)等指标。结果:高剂量的柿叶多糖能较明显的改善糖尿病小鼠的葡萄糖耐量(P<0.01),低、高剂量组均能显著降低糖尿病小鼠的血糖水平(P<0.05),有效降低肝组织MDA值,相应增高SOD活力,并能显著增加胰岛素敏感指数(ISI),改善胰岛素抵抗状态。结论:柿叶多糖具有较强的降血糖作用,可能与其能提高小鼠肝脏抗氧化酶活性、改善胰岛素抵抗等有关。