A Protein Isolate from Moringa oleifera Leaves Has Hypoglycemic and Antioxidant Effects in Alloxan-Induced Diabetic Mice
AbstractMoringa oleifera has been used in traditional medicine to treat diabetes. However, few studies have been conducted to relate its antidiabetic properties to proteins. In this study, a leaf protein isolate was obtained from M. oleifera leaves, named Mo-LPI, and the hypoglycemic and antioxidant effects on alloxan-induced diabetic mice were assessed. Mo-LPI was obtained by aqueous extraction, ammonium sulphate precipitation and dialysis. The electrophoresis profile and proteolytic hydrolysis confirmed its protein nature. Mo-LPI showed hemagglutinating activity, cross-reaction with anti-insulin antibodies and precipitation after zinc addition. Single-dose intraperitoneal (i.p.) administration of Mo-LPI (500 mg/kg·bw) reduced the blood glucose level (reductions of 34.3%, 60.9% and 66.4% after 1, 3 and 5 h, respectively). The effect of Mo-LPI was also evidenced in the repeated dose test with a 56.2% reduction in the blood glucose level on the 7th day after i.p. administration. Mo-LPI did not stimulate insulin secretion in diabetic mice. Mo-LPI was also effective in reducing the oxidative stress in diabetic mice by a decrease in malondialdehyde level and increase in catalase activity. Mo-LPI (2500 mg/kg·bw) did not cause acute toxicity to mice. Mo-LPI is a promising alternative or complementary agent to treat diabetes. View Full-Text
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Paula, P.C.; Sousa, D.O.B.; Oliveira, J.T.A.; Carvalho, A.F.U.; Alves, B.G.T.; Pereira, M.L.; Farias, D.F.; Viana, M.P.; Santos, F.A.; Morais, T.C.; Vasconcelos, I.M. A Protein Isolate from Moringa oleifera Leaves Has Hypoglycemic and Antioxidant Effects in Alloxan-Induced Diabetic Mice. Molecules 2017, 22, 271.
Paula PC, Sousa DOB, Oliveira JTA, Carvalho AFU, Alves BGT, Pereira ML, Farias DF, Viana MP, Santos FA, Morais TC, Vasconcelos IM. A Protein Isolate from Moringa oleifera Leaves Has Hypoglycemic and Antioxidant Effects in Alloxan-Induced Diabetic Mice. Molecules. 2017; 22(2):271.Chicago/Turabian Style
Paula, Paulo C.; Sousa, Daniele O.B.; Oliveira, Jose T.A.; Carvalho, Ana F.U.; Alves, Bella G.T.; Pereira, Mirella L.; Farias, Davi F.; Viana, Martonio P.; Santos, Flavia A.; Morais, Talita C.; Vasconcelos, Ilka M. 2017. "A Protein Isolate from Moringa oleifera Leaves Has Hypoglycemic and Antioxidant Effects in Alloxan-Induced Diabetic Mice." Molecules 22, no. 2: 271.