BACKGROUND:Diabetes mellitus (DM) is associated with hyperglycemia, inflammatory disorders and abnormal lipid profiles, currently the extracts from leaves of cynara scolymus has been discovered to treat metabolic disorders and has been stated by multitudinous scientists according to a good source of polyphenols compounds. The present study aimed to evaluate the protective effect of the ethanol leaves extract of C. scolymus in alloxan induced stress oxidant, hepatic-kidney dysfunction and histological changes in liver, kidney and pancreas of different experimental groups of rats.
METHODS:We determinate the antioxidant activity by ABTS .+ and antioxidant total capacity (TAC) of all extracts of C. scolymus leaves, the inhibition of α-amylase activity in vitro was also investigated. Forty male Wistar rats were induced to diabetes with a single dose intraperitoneal injection (i.p.) of alloxan (150 mg/kg body weight (b.w.)). Diabetic rats were orally and daily administrated of ethanol extract from C. scolymus at two doses (200-400 mg/kg, b.w) or (12 mg/kg, b.w) with anti-diabetic reference drug, Acarbose for one month. Ethanol extract of C. scolymus effect was confirmed by biochemical analysis, antioxidant activity and histological study.
RESULTS:The results indicated that the ethanol extract from leaves of C. scolymus showed the highest antioxidant activity by ABTS .+ (499.43g± 39.72 Trolox/g dry extract) and (128.75 ± 8.45 mg VC /g dry extract) for TAC and endowed the powerful inhibition in vitro of α-amylase activity with IC50=72,22 ug/uL. In vivo, the results showed that ethanol extract from the leaves of C. scolymus (200-400 mg/kg) decreased significantly (p < 0.001) the α-amylase levels in serum of diabetic rats, respectively associated with significant reduction (p < 0.001) in blood glucose rate of 42,84% and 37,91% compared to diabetic groups after 28 days of treatment, a significant lowered of plasma total cholesterol (T-Ch) by 18,11% and triglyceride (TG) by 60,47%, significantly and low-density lipoproteins (LDL-C) by 37,77%, compared to diabetic rats, moreover, the administration of ethanol extract appears to exert anti-oxidative activity demonstrated by the increase of CAT, SOD and GSH activities in liver, kidney and pancreas of diabetic rats. This positive effect of the ethanol extract from C. scolymus was confirmed by histological study.
CONCLUSION:These observed strongly suggest that ethanol extract from the leaves of C. scolymus has anti-hyperglycemic properties, at least partly mediated by antioxidant and hypolipidemic effects.
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【Protective effects of Cynara scolymus leaves extract on metabolic disorders and oxidative stress in alloxan-diabetic rats.].
【Cynara scolymus叶片提取物对四氧嘧啶糖尿病大鼠代谢紊乱和氧化应激的保护作用。】
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DOI：10.1186/s12906-017-1835-8文章类型：杂志文章
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背景：糖尿病（DM）与高血糖，炎性疾病和异常脂质状况相关，目前已发现粘虫c叶片的提取物可治疗代谢紊乱，许多科学家已经根据多酚化合物的良好来源进行了陈述。本研究旨在评价鳞球菌乙醇叶提取物对四氧嘧啶诱导的应激氧化剂，肝肾功能障碍以及不同实验组大鼠肝，肾和胰腺组织学变化的保护作用。
方法：我们通过ABTS测定抗氧化活性。鼠尾草叶片的所有提取物的抗氧化剂和总抗氧化剂（TAC），还研究了其对α-淀粉酶活性的体外抑制作用。通过单剂量腹膜内注射（i.p.）四氧嘧啶（150 mg / kg体重（b.w.））将40只雄性Wistar大鼠诱发为糖尿病。糖尿病大鼠口服和每天服用两种剂量（200-400 mg / kg，b.w）或（12 mg / kg，b.w）的鼠尾草乙醇提取物和抗糖尿病参考药物阿卡波糖（acarbose）。通过生化分析，抗氧化活性和组织学研究证实了粘液梭状芽胞杆菌的乙醇提取物作用。
结果：结果表明，ABTS从粘枝sco叶片中提取的乙醇具有最高的抗氧化活性。 （499.43g±39.72 Trolox / g干提取物）和（128.75±8.45 mg VC / g干提取物）用于TAC，并在体外有效抑制α-淀粉酶活性，IC50 = 72.22 ug / uL。在体内，结果显示，从粘液梭菌的叶子中提取乙醇（200-400 mg / kg）显着降低（p <0.001）糖尿病大鼠血清中的α-淀粉酶水平，分别与显着降低有关（p <0.001）。在治疗28天后，与糖尿病组相比，血糖比率分别为0.001、42.84％和37.91％，血浆总胆固醇（T-Ch）显着降低了18.11％，甘油三酸酯（TG）显着降低了60与糖尿病大鼠相比，低密度脂蛋白（LDL-C）降低了47.7％，低密度脂蛋白（LDL-C）降低了37.77％，此外，乙醇提取物的给药似乎表现出抗氧化活性，这是由于CAT，SOD和GSH的增加所证明的在糖尿病大鼠肝，肾和胰腺中的活性。组织学研究证实了粘液梭菌乙醇提取物的这种积极作用。
结论：这些观察结果强烈表明，从粘液梭菌的叶子中提取乙醇具有抗降血糖作用，至少部分是由抗氧化剂和降血脂作用介导的。
方法：我们通过ABTS测定抗氧化活性。鼠尾草叶片的所有提取物的抗氧化剂和总抗氧化剂（TAC），还研究了其对α-淀粉酶活性的体外抑制作用。通过单剂量腹膜内注射（i.p.）四氧嘧啶（150 mg / kg体重（b.w.））将40只雄性Wistar大鼠诱发为糖尿病。糖尿病大鼠口服和每天服用两种剂量（200-400 mg / kg，b.w）或（12 mg / kg，b.w）的鼠尾草乙醇提取物和抗糖尿病参考药物阿卡波糖（acarbose）。通过生化分析，抗氧化活性和组织学研究证实了粘液梭状芽胞杆菌的乙醇提取物作用。
结果：结果表明，ABTS从粘枝sco叶片中提取的乙醇具有最高的抗氧化活性。 （499.43g±39.72 Trolox / g干提取物）和（128.75±8.45 mg VC / g干提取物）用于TAC，并在体外有效抑制α-淀粉酶活性，IC50 = 72.22 ug / uL。在体内，结果显示，从粘液梭菌的叶子中提取乙醇（200-400 mg / kg）显着降低（p <0.001）糖尿病大鼠血清中的α-淀粉酶水平，分别与显着降低有关（p <0.001）。在治疗28天后，与糖尿病组相比，血糖比率分别为0.001、42.84％和37.91％，血浆总胆固醇（T-Ch）显着降低了18.11％，甘油三酸酯（TG）显着降低了60与糖尿病大鼠相比，低密度脂蛋白（LDL-C）降低了47.7％，低密度脂蛋白（LDL-C）降低了37.77％，此外，乙醇提取物的给药似乎表现出抗氧化活性，这是由于CAT，SOD和GSH的增加所证明的在糖尿病大鼠肝，肾和胰腺中的活性。组织学研究证实了粘液梭菌乙醇提取物的这种积极作用。
结论：这些观察结果强烈表明，从粘液梭菌的叶子中提取乙醇具有抗降血糖作用，至少部分是由抗氧化剂和降血脂作用介导的。
