Glutathione S-transferases and malondialdehyde in the liver of NOD mice on short-term treatment with plant mixture extract P-9801091

Changes in the concentration of glutathione S-transferases (GSTs) and malondialdehyde (MDA) were assessed in the liver of normal and diabetic NOD mice with and without treatment with the plant extract P-9801091. The plant extract P-9801091 is an antihyperglycaemic preparation containing Myrtilli folium (Vaccinium myrtillus L.), Taraxaci radix (Taraxacum of fi cinale Web.), Cichorii radix (Cichorium intybus L.), Juniperi fructus (Juniperus communis L.), Centaurii herba (Centaurium umbellatum Gilib.), Phaseoli pericarpium (Phaseolus vulgaris L.), Millefoliiherba (Achillea millefolium L.), Mori folium (Morus nigra L.), Valerianae radix (Valeriana of ficinalis L.) and Urticae herba et radix (Urtica dioica L). Hyperglycaemia in diabetes mellitus is responsible for the development of oxidative stress (via glucose auto-oxidation and protein glycation), which is characterized by increased lipid peroxide production (MDA is a lipid peroxidation end product) and/or decreased antioxidative defence (GST in the liver is predominantly an alpha enzyme, which has antioxidative activity). The catalytic concentration of GSTs in the liver was significantly reduced in diabetic NOD mice compared with normal NOD mice (p < 0.01), while the concentration of MDA showed a rising tendency (not significant). The results showed that statistically significant changes in antioxidative defence occurred in the experimental model of short-term diabetes mellitus. A 7-day treatment with P-9801091 plant extract at a dose of 20 mg/kg body mass led to a significant increase in the catalytic concentration of GSTs in the liver of diabetic NOD mice (p < 0.01) and a decrease in MDA concentration (not significant), which could be explained by its antihyperglycaemic effect.     

红花等10种中药的植物雌激素活性研究

目的：评价红花、川牛膝、丹参、女贞子、枸杞、甘草、肉苁蓉、淫羊藿、补骨脂、菟丝子等10味中药的植物雌激素活性。方法：选用昆明种雌性乳鼠,随机分为A,B二组：A组又分为12组（溶剂对照组、己烯雌酚组和10个中药组）；B组也分为12组（溶剂对照组、己烯雌酚组和10个中药拮抗组）,其中中药拮抗组每天同时灌胃中药和己烯雌酚；各组给药4 d后分离血清。利用雌激素受体（ER）阳性MCF-7细胞,以MTT法检测中药含药血清对细胞增殖的影响。结果：A组中,红花、川牛膝、丹参、枸杞、肉苁蓉、淫羊藿、补骨脂和菟丝子等中药含药血清可显著促进MCF-7细胞增殖；而女贞子组可见细胞增殖受到明显抑制。B组中,红花、川牛膝、丹参、甘草、淫羊藿、补骨脂和菟丝子组可见己烯雌酚促细胞增殖的作用受到了显著抑制；而肉苁蓉可协同并显著增强己烯雌酚促细胞增殖的作用。结论：红花、川牛膝、丹参、淫羊藿、补骨脂、菟丝子等6种中药在单独用药时具有拟雌激素作用,在与雌激素同时用药时具有抗雌激素作用,其双向调节效应依赖于体内雌激素水平的高低。     

Inhibitory activity of Chrysanthemi sibirici herba extract on RBL-2H3 mast cells and compound 48/80-induced anaphylaxis

The effects of extracts from various oriental medicinal herbs on mast cell-mediated allergic reaction were investigated. Among them, Chrysanthemi sibirici herba ethanol extract exerted the potent inhibitory activity on antigen-induced degranulation in RBL-2H3 mast cells. Chrysanthemi sibirici herba dose-dependently inhibited DNP-BSA or compound 48/80-induced degranulation in RBL-2H3 mast cells, with IC(50) values of approximately 49 microg/ml and 76 microg/ml, respectively. This extract strongly suppressed compound 48/80-induced systemic anaphylaxis by 48.7% at a dose of 300 mg/kg in mice. Chrysanthemi sibirici herba also inhibited the expression of TNF-alpha and the activation of the MAP kinase, ERK1/2, which is critical for the production of inflammatory cytokines in mast cells, as indicated by the suppression of activating phosphorylation of ERK1/2. These results lead us to conclude that Chrysanthemi sibirici herba may be used clinically to treat various allergic diseases.     

三金排石汤治疗尿石症用药规律研究

目的研究三金排石汤治疗尿石症的用药规律。方法通过维普期刊数据库,检索出采用三金排石汤治疗尿石症的有效方剂,分析其用药规律。结果在551首三金排石汤所涉及的中药中,利水通淋和化瘀消积药的使用比例较高,除金钱草、海金砂、鸡内金外,石韦、滑石、车前子(车前草)、牛膝的使用率最高。结论目前三金排石汤辅助使用的药物以利水通淋和化瘀消积药为主。在金钱草、海金砂、鸡内金的基础上,联合石韦、滑石、车前子(车前草)、牛膝构成了排石汤的核心部分。     

Pharmacological studies on anti-hyperglycemic effect of folium eriobotryae

Folium eriobotryae, dried leaves of Eriobotrya japonica (Thunb.) Lindl. is a traditional Chinese medicine with rich resources in China. This research investigated the anti-hyperglycemic effect of folium eriobotryae on normal and alloxan-diabetic mice. The 70% ethanol extract of folium eriobotryae (EJA-0) in doses of 15, 30 and 60 g (crude drug)/kg exerted a significant hypoglycemic effect on alloxan-diabetic mice, among which 30 g/kg of EJA-0 was more effective than 100 mg/kg of phenformin. The total sesquiterpenes (EJA-1) 30 g (crude drug)/kg had significant effect on lowering blood glucose level in normal or/and alloxan-diabetic mice. The tests of maximum dosage and acute toxicity showed that EJA-1 was safe (MD = 360 g/kg, LD(50) = 400.1 g/kg). The pharmacological tests on anti-hyperglycemic effects of EJA-0 and EJA-1 prove that folium eriobotryae is an outstanding material to develop medicine for treatment of diabetes mellitus.     

豨莶草醇提物调控TLRs/NF-κB通路及NLRP3炎症小体干预痛风性关节炎的机制研究

目的探讨豨莶草醇提物通过Toll样受体(TLRs)/核因子κB(NF-κB)信号通路及NOD样受体蛋白3(NLRP3)干预痛风性关节炎(GA)的作用机制。方法采用脂多糖(LPS)联合尿酸钠结晶(MSU)刺激急性单核细胞白血病细胞(THP-1)源性巨噬细胞,建立GA炎症细胞模型;以豨莶草醇提物300、200、100μg·mL^-1不同浓度进行干预。采用CCK-8法检测细胞活力;ELISA法检测细胞上清中白细胞介素-1β(IL-1β)的水平;qRT-PCR法检测TLRs/NF-κB信号通路相关基因(TLR2、TLR4、MYD88、IRAK-1、TRAF-6、TAK-1、NF-κB、IL-1β)及NLRP3 m RNA的表达;Western Blot法检测NF-κB、NLRP3、IL-1β蛋白的表达。结果与对照组比较,豨莶草醇提物300、200、100μg·mL^-1浓度对THP-1巨噬细胞活力均无明显影响(P>0.05);模型组的IL-1β水平明显升高(P<0.05),TLRs/NF-κB信号通路相关基因及NLRP3 mRNA表达水平均明显上调(P<0.05),NF-κB、NLRP3、IL-1β蛋白表达水平明显上调(P<0.05)。与模型组比较,豨莶草醇提物300、200、100μg·mL^-1浓度组的细胞IL-1β水平明显降低(P<0.05),TLRs/NF-κB信号通路相关基因及NLRP3 mRNA表达水平均不同程度下调(P<0.05),NF-κB、NLRP3及IL-1β蛋白表达水平亦不同程度下调(P<0.05)。结论豨莶草醇提物可能通过调控TLRs/NF-κB信号通路及抑制NLRP3炎症小体活化,减少炎症因子的产生与释放,进而减轻痛风性炎症反应。     

Effect of Manilkara hexandra (Roxb.) Dubard against experimentally-induced gastric ulcers

Effects of the flavonoid rich fraction of the stem bark of Manilkara hexandra (Roxb.) Dubard, have been studied on ethanol, ethanol-indomethacin and pylorus ligated gastric ulcers in experimental animals. Oral administration of the ethyl acetate extract (extract A3) inhibited the formation of gastric lesions induced by ethanol in a dose dependent manner. The protective effect of extract A3 against ethanol induced gastric lesions was not abolished by pretreatment with indomethacin (10 mg kg(-1)). Further, extract A3 inhibited increase in vascular permeability due to ethanol administration. Extent of lipid peroxidation was significantly reduced in animals treated with extract. Extract A3 also inhibited the formation of gastric ulcers induced by pylorus ligation, when administered both orally and intraperitoneally. Moreover, pretreatment with extract A3 increased mucus production and glycoprotein content, which was evident from the rise in mucin activity and TC: PR ratio.     

中药饮片对多重抗生素耐药细菌的抑菌作用

目的:检测常见的28种清热解毒类中药饮片是否对抗生素抗性菌株与敏感菌株存在差别抑菌效果。方法:采用琼脂稀释法分别测定所选中药的水煎液对大肠杆菌和溶血葡萄球菌的敏感菌株和多重抗药突变菌株的抑菌情况。结果:大部分中药对抗生素抗性菌与敏感菌没有表现出明显的差别抑菌效果,表现差别抑菌效果的中药只有:连翘、厚朴、决明子、甘草。其中,抗生素抗性菌株往往比敏感菌株对中药更敏感。此外,不同中药的抑菌效果差别较大,对两种菌都有较好抑菌效果的是:黄连、黄芩、大黄、地榆、山茱萸、金银花、板蓝根、枸杞等。对两者抑菌效果都较差的中药包括:鱼腥草、桑白皮、山豆根、柴胡、蒲公英、防风、枇杷叶等。结论:只有少数中药对抗生素抗性菌与敏感菌存在差别抑菌效果,且抗性菌株往往比敏感菌株对中药更敏感。此结果提示中西医联合用药在治疗细菌感染性疾病分布可能更具优越性。     

WX-JT复方降血糖作用研究

目的: 研究WX-JT复方对α-葡萄糖苷酶抑制作用,评价WX-JT复方长期给药对II型糖尿病KK-A^y小鼠血糖相关指标影响。 方法: ①体外反转肠囊试验:采用大鼠小肠制备反转肠囊作为α-葡萄糖苷酶的来源,采用经α-淀粉酶消化后的淀粉溶液作为底物,与不同浓度阿卡波糖及WX-JT复方于37 ℃反应2 h,通过最终葡萄糖产生量计算受试药的α-葡萄糖苷酶抑制率。②正常小鼠淀粉耐量试验:正常ICR小鼠禁食20 h后单次ig给予3 g·kg^-1淀粉溶液及45.24,90.48,180.96 mg·kg^-1 WX-JT复方,测定给予淀粉0,30,60,120 min后血糖,评价药物对血糖升高的抑制作用。③长期给药对II型糖尿病小鼠血糖的影响:采用自发II型糖尿病模型KK-A^y小鼠,分为模型对照组、阿卡波糖组、WX-JT复方低剂量组(180.96 mg·kg^-1)和高剂量组(361.92 mg·kg^-1),正常对照组采用C57 BL/6J小鼠。连续ig给药9周,定期测定空腹血糖和非空腹血糖值;试验结束前进行口服葡萄糖耐量试验(OGTT)和糖基化血红蛋白(HbA1c)测定。 结果: 7~189 mg·L^-1WX-JT复方体外能浓度依赖地抑制α-葡萄糖苷酶活性,抑制率为16.6%~86%;90.48,180.96 mg·kg^-1 WX-JT复方明显降低正常小鼠淀粉耐量试验餐后30,60 min血糖;180.96,361.92 mg·kg^-1 WX-JT复方长期给药显著降低自发II型糖尿病模型KK-A^y小鼠空腹血糖、非空腹血糖和糖化血红蛋白水平,改善口服葡萄糖耐量,并呈明显量效关系。 结论: WX-JT复方具有明确的α-葡萄糖苷酶抑制作用,长期给药明显改善KK-A^y小鼠血糖相关指标,表明WX-JT复方通过抑制α-葡萄糖苷酶活性而发挥降血糖作用。     

(Z)-3-butylidenephthalide from Ligusticum porteri , an α-glucosidase inhibitor

An extract from the roots of Ligusticum porteri, orally administered to groups of normal and diabetic mice, showed significant hypoglycemic and antihyperglycemic effects. Experimental type-II DM was achieved by treating mice with streptozotocin 15 min after an injection of β-nicotinamide adenine dinucleotide. (Z)-6,6',7,3'α-diligustilide (1), (Z)-ligustilide (2), 3-(Z)-butylidenephthalide (3), myristicin (4), and ferulic acid (5) were isolated from the active extract. When tested In Vivo, compounds 1-3 showed antihyperglycemic activity, with 3 being the most active. Compound 3 (56.2 mg/kg) decreased blood glucose levels in NAD-STZ-diabetic mice after an oral sucrose load, suggesting that its antihyperglycemic effect is due to inhibition of α-glucosidase at the intestinal level. Furthermore, 3 inhibited the activity of yeast-α-glucosidase (IC(50) 2.35 mM) in a noncompetitive fashion with a K(i) of 4.86 mM. Docking analysis predicted that 3 binds to the enzyme in a pocket close to the catalytic site, but different from that for acarbose, with a K(i) of 11.48 mM. Compounds 1 and 2 did not affect α-glucosidase In Vivo, but altered glucose absorption by a mechanism yet to be determined. The stimulatory effect of 5 on insulin secretion, present in high amounts in the extract, has been demonstrated in previous investigations. The present study provides scientific support of the use of L. porteri in Mexican folk medicine for the treatment of diabetes.     

倒地铃提取物降血糖作用研究

目的：研究倒地铃不同提取部位降血糖的作用。方法：用高脂高糖饲料喂养加小剂量注射链脲佐菌素（STZ）方法诱导小鼠2型糖尿病模型,用不同剂量的倒地铃不同提取部位进行干预,测定小鼠体重变化、空腹血糖、口服糖耐量和血清胆固醇（CHO）。结果：各组小鼠体重差异无统计学意义,倒地铃水提取物及30％醇洗脱物能显著降低糖尿病小鼠空腹血糖（P〈0．05）,提高1h葡萄糖耐量（P〈0．01）,60％醇洗脱物能提高小鼠1h葡萄糖耐量（P〈0．01）。结论：倒地铃降血糖作用的主要有效部位为30％醇洗脱物、60％醇洗脱物。     

黄芩水、醇提液急性毒性实验研究

目的：观察黄芩水、醇提液的急性毒性反应。方法取健康小鼠40只,雌雄各半,随机分为2组,每组各20只,禁食不禁水12 h后,黄芩水提液组经口予黄芩水提液,给药容积为60 mL/kg体质量,生药含量为36．0 g/kg体质量,分2次给药,空白对照组予等容积蒸馏水,进行黄芩水提液的毒性实验。另取健康小鼠40只,雌雄各半,随机分为4组,即50、42、35、29 g/kg 组,每组各10只,禁食不禁水12 h后,分别按0．4 mL/10 g体质量黄芩醇提液灌胃给药,分别含生药50、42、35、29 g/kg体质量,进行黄芩醇提液毒性实验。结果黄芩水提液的小鼠经口最大耐受量为72．0 g生药/kg;黄芩80％乙醇提液的半数致死量（ LD50）为39．60 g生药/kg,95％可信限为36．75～42．68 g生药/kg。结论黄芩水、醇提液的毒性较低,临床给药安全可靠。     

Antiulcerogenic effect and acute toxicity of a hydroethanolic extract from the cashew (Anacardium occidentale L.) leaves

The antiulcerogenic effect of a hydroethanolic extract of Anacardium occidentale L. leaves was investigated. The extract inhibited gastric lesions induced by HCl/ethanol in female rats. A dose-response effect study showed that the ED50 was 150 mg/kgb.w. Extract doses higher than 100 mg/kgb.w. were more effective than 30 mg/kg of lansoprazol in inhibiting gastric lesions. A methanolic fraction (257.12 mg/kg) which reduced gastric lesion at 88.20% is likely to contain the active principle of the antiulcer effect. No signs of acute toxicity were observed when mice were treated with extract dose up to 2000 mg/kgb.w. A chemical analysis of the extract allowed the identification of phenolic compounds as the major components. Glycosylated quercetin, amentoflavone derivate and a tetramer of proanthocyanidin were identified by liquid chromatography coupled to mass spectrometry. The level of total phenolics in the extract was evaluated at 35.5% and flavonoid content was 2.58%.     

倒地铃急性毒性及降血糖作用的初步研究

目的研究倒地铃降血糖的药理作用。方法倒地铃乙醇总提取物分别按60,30,15 g.kg-1连续灌21 d后观察其对糖尿病小鼠血糖和正常小鼠血糖的影响。结果倒地铃乙醇总提取物能明显降低四氧嘧啶性糖尿病小鼠和肾上腺素性糖尿病小鼠的血糖值(P<0.05);在高剂量情况下,对正常小鼠血糖有一定的影响(P<0.05);倒地铃全草乙醇总提取物半数致死量LD50=302.41～382.43g生药.kg-1。结论倒地铃乙醇总提取物对高血糖小鼠有显著的降血糖作用。     

桔梗总皂苷通过抑制IRG-1对呼吸道合胞病毒肺炎小鼠治疗作用的研究

目的:探讨桔梗总皂苷通过抑制免疫反应基因1 (IRG-1)对呼吸道合胞病毒(RSV)肺炎小鼠的治疗作用。方法:将60只小鼠分为对照组、模型组、利巴韦林组和桔梗总皂苷低、中、高剂量组,每组10只。除对照组外,其余各组制备RSV肺炎小鼠模型。模型制备后第2天利巴韦林组按0.150 g/(kg·d)的剂量给予利巴韦林灌胃,桔梗总皂苷低、中、高剂量组依次按照0.014 g/(kg·d)、0.028 g/(kg·d)、0.056 g/(kg·d)的剂量给予桔梗总皂苷灌胃,对照组、模型组给予等体积生理盐水。连续给药5天,计算小鼠肺指数,进行病理学检查,检测支气管肺泡灌洗液中白细胞介素-6 (IL-6)、白细胞介素-1β(IL-1β)、活性氧(ROS)、肿瘤坏死因子-α(TNF-α)及血清中IRG-1 mRNA的含量。结果:对照组小鼠肺组织未见明显异常;模型组小鼠肺组织见肺泡壁增厚,支气管和细支气管周围有大量淋巴细胞浸润,腔内有大量脱落炎细胞及渗出物,存在肺实变表现;利巴韦林组小鼠肺组织病理改变与对照组接近;桔梗总皂苷各剂量组小鼠肺泡壁部分增厚,肺泡内炎症细胞渗出较模型组轻,呈剂量依赖性。与对照组比较,模型组小鼠肺指数、IL-6、IL-1β、TNF-α、ROS含量及血清中IRG-1 mRNA相对表达量均显著增高(P<0.05)。与模型组比较,利巴韦林组和桔梗总皂苷低、中、高剂量组小鼠肺指数、IL-6、IL-1β、TNF-α、ROS含量及血清中IRG-1 mRNA相对表达量均显著降低(P<0.05)。与利巴韦林组比较,桔梗总皂苷各剂量组小鼠肺指数、IL-6、IL-1β、TNF-α、ROS含量及血清中IRG-1 mRNA相对表达量均增高,除桔梗总皂苷高剂量组肺指数及TNF-α外,差异均有统讨学意义(P<0.05)。结论:桔梗总皂苷能改善RSV感染所致的小鼠肺炎炎症反应,其机制可能与抑制IRG-1的表达有关。     

荆芥-防风药对治疗荨麻疹作用机制的网络药理学研究

目的基于网络药理学方法探讨荆芥-防风药对治疗荨麻疹的作用机制。方法通过中药系统药理学分析平台(TCMSP)检索荆芥、防风的化学成分和作用靶点,运用UniProt数据库查询靶点对应的基因,以Cytoscape 3.7.1软件构建化合物-靶点(基因)网络。借助OMIM、Digsee、TTD等数据库查询荨麻疹相关的基因,运用Venny 2.1.0筛选出荆芥-防风与荨麻疹的交集基因,并将筛选出的核心靶标蛋白导入STRING在线网站数据库,获取蛋白相互作用关系。运用DAVID数据库进行基因本体(GO)功能富集分析和基于京都基因与基因组百科全书(KEGG)通路富集分析。结果化合物-靶点网络包含26个化合物和208个相应靶点,关键靶点涉及前列腺素内过氧化物合酶2(PTGS2)、二肽激肽酶4(DPP4)、凝血因子Ⅱ(F2)、热休克蛋白HSP90α(HSP90AA1)、前列腺素内过氧化物合酶1(PTGS1)等。荆芥-防风与荨麻疹蛋白质相互作用网络包含18个蛋白,关键蛋白涉及白介素2(IL2)、干扰素γ(IFNG)、白介素4(IL4)等。GO分析得到GO条目16个(靶点基因富集度>55%),其中生物过程(BP)条目13个,细胞组分(CC)条目3个;KEGG分析得到17条信号通路(P<0.05)。结论荆芥-防风药对可能通过RAC-α丝氨酸/苏氨酸-蛋白激酶(AKT1)、IL4、白介素6(IL-6)、肿瘤坏死因子(TNF)等靶点调节炎症细胞因子,并调控FCεRI信号通路、T细胞受体信号通路、Jak-STAT信号通路等发挥治疗荨麻疹的作用。     

Hypoglycemic effects of Potentilla fulgens L in normal and alloxan-induced diabetic mice

Tap roots of Potentilla fulgens L. traditionally chewed along with betel nut (Areca catechu) and betel leaves (Piper betel), are commonly used by local practitioners for various types of ailments. The crude methanolic extract of the roots was tested for its effects in normoglycemic and alloxan-induced diabetic mice. Hypoglycemic activity was observed to be dose- and time- dependent. The extracts reduced blood glucose level 2 h following administration in both normal and alloxan-induced diabetic mice. In alloxan-induced diabetic mice blood glucose was markedly reduced by 63%, while in normal mice a 31% reduction was observed 24 h after the effective dose of extract was administered. Further, in the diabetic mice a prolonged anti-hyperglycemic action was observed where glucose levels was, found to be significantly low (79%) when compared with control even on the third day. Glucose tolerance was also improved in both normal and diabetic mice. The results were compared against those of insulin, glibenclamide, metformin, and the probable mechanism of action is discussed.     

Pancreatic islet regeneration by ephedrine in mice with streptozotocin-induced diabetes.

In this experiment, we investigated the effects of crude Ephedrae herba, alkaloid extract of Ephedrae herba and 1-ephedrine, a major alkaloid component, on diabetic mice induced by streptozotocin (STZ). The alkaloid extract and 1-ephedrine showed suppression on the hyperglycemia. The suppression by Ephedrae herba of hyperglycemia may therefore be due to 1-ephedrine. Furthermore, we found that Ephedrae herba, alkaloid and 1-ephedrine promoted the regeneration of pancreas islets following atrophy induced by STZ. It is therefore suggested that Ephedrae herba may regenerate atrophied pancreatic islets, restore the secretion of insulin, and thus correct hyperglycemia.     

Effect of Trigonella foenum graceum on blood glucose levels in normal and alloxan-diabetic mice

The hypoglycemic effects of a decoction and an ethanol extract of Trigenolla foenum graceum seeds on the serum glucose levels of normal and alloxan diabetic mice were studied. A single 0.5 ml oral dose of 40-80% decoctions to normal as well as alloxanized mice was followed by hypoglycemia developed over a 6-h period. Reduction in blood glucose concentration was highly significant, was maximum at 6 h and was dose-dependent. The hypoglycemia caused by the ethanol extract (200-400 mg/kg) in alloxanized mice was also dose-dependent and 200 mg/kg was comparable in effect to 200 mg/kg tolbutamide.     

Antidiabetic and hypolipidemic activity of Helicteres isora in animal models

Helicteres isora (Sterculiaceae) root juice has been used in the treatment of diabetes by several ethnic groups in different parts of India. A program was initiated to elucidate the scientific basis for the antidiabetic activity of H. isora. Ethanolic extract of H. isora root caused significant reduction in plasma glucose, triglyceride and insulin levels at 300 mg/kg dose after 9 days of administration to insulin resistant and diabetic C57BL/KsJdb/db mice. In normoglycemic and mildly hypertriglyceridemic Swiss albino mice, the extract also showed significant reduction in plasma triglyceride and insulin levels, without affecting plasma glucose level. An ethanolic extract showed activity distinctly different from glybenclamide and acarbose but similar to troglitazone in these models. In high fat fed hamster model, the extract showed significant reduction in plasma lipid levels. In order to identify the active pharmacophore, the ethanolic extract was further subjected to sequential partitioning with low, medium and high polarity solvents, which yielded a semipurified fraction having both euglycemic and lipid-lowering activity. Our study suggests that the extract of H. isora has insulin-sensitizing and hypolipidemic activity and has the potential for use in the treatment of type-2 diabetes.