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1Antidiabetic and hypolipidemic activities of ethanolic leaf extract and fractions of Melanthera scandens显示文摘Objective:To evaluate the antidiabetic and hypolipidemie activities of ethanolic leaf extract and Fraction of Melanthera scandens(M.scandens) in alloxan-induced diabetic rats.Methods:M.scandens leaf extract/fractions(37-111 mg/kg) were administered to alloxan-induced diabetic rats for 14 days and blood glucose levels(BGL) of the diabetic rats were monitored at intervals of 7 hours for acute study and 14 days lor prolonged study.Lipid profiles of the treated diabetic rats were determined after the period of treatment.Results:Treatment of alloxan-induced diabetic rats with the extract/fractions caused a significant(P<0.001) reduction in lasting bloodglucose levels(BGL) ol the diabetic rats both in acute study and prolonged Irealnient(2weeks).The activities of the extract and fractions were more than that of the reference drug,glibenclamide.The extract/fractions exerted a significant reduction in the levels of serum total cholesterol,triglycerides,LDL and VLDL of extract with increases in HDL.levels of the diabetic rats.Conclusions:These results suggest that the leaf extract/fractions(AM.scandals possesses antidiabetic effect on alloxan induced diabetic rats and this justifies its use in ethno medicine and can be exploited in the management of diabetes.Enomfon J Akpan Jude E Okokon Emem Offong 2012Asian Pacific Journal of Tropical Biomedicine2012,2,7:1
2Antiplasmodial and antiulcer activities of Melanthera scadens显示文摘Objective:To evaluate the antimalarial and antiulcerogenic activities ofleaf exlracl and fractions of Melanthera scandens(M.scandens).Methods:The crude leaf extract(37-111 mg/kg)and fractions(chloroform,ethylacetale and methanol;78 mg/kg)of M.scadens were investigated for antiplasmodial activity against chloroquine-sensitive Plasmodium berghei infections in mice and for antiulcer activity against experimentally-induced ulcers.The antimalarial activity during early and established infections as well as prophylactic was investigated.Artesunate(5 mg/kg)and pyrimethamine(1.2 mg/kg)were used as positive controls.Thin films made from tail blood of each mouse were used to assess the level of parasitaemia of the mice.Antiulcer activity of the crude extract was also evaluated against indomethacin,ethanol and histamine induced ulcers.Results:The extract and its fractions dose-dependently reduced parasitaemia induced by chloroquine-sensitive Plasmodium berghei infection in prophylactic,suppressive and curative models in mice.These reductions were statistically significant(P<0.00l),They also improved the mean survival time(MST)from 9.28 to 17.73 days as compared with the control(P<0.0l-0.001).The activities of extract/fractions were incomparable to that of the standard drugs ie.artesunate and pyrimethamine.On experimentally-induced ulcers,the extract inhibited indomethacin,ethanol and histamine induced ulcers.These inhibitions were statistically significant(P<0.001)and in a dose-dependent fashion.Conclusions:The antiplasmodial and antiulcerogenic effects of this plant may in part be mediated through the chemical constituents of the plant.Jude E Okokon Ette O Etebong John A Udobang Jackson Obot 2012Asian Pacific Journal of Tropical Biomedicine2012,2,1:1
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