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Hypoglycemic and antioxidant effects of polysaccharides from the petioles and pedicels of Euryale ferox Salisb. on alloxan-induced hyperglycemic mice

Abstract

The present study investigated the potential hypoglycemic and antioxidant effects of polysaccharides extracted from the petioles and pedicels of Euryale ferox Salisb. (EFPP) in alloxan-induced hyperglycemic mice. The EFPP had a total carbohydrate of 65.72 ± 2.81%, uronic acid of 4.56 ± 0.62% and protein of 0.58 ± 0.12%,with average molecular weight from 1.02 kDa to 11.45 kDa and monosaccharide composition of Man, GlcA, Rha, Glc, Gal and Ara at a molar ratio of 0.12:0.01:9.57:0.41:1.00:0.24. Administration with EFPP, especially high dose EFPP, was beneficial to reverse body weight loss, reduce blood glucose level, enhance serum insulin level, improve oral glucose tolerance, increase hepatic glycogen content and GCK activity, and modulating the mRNA expression of GCK in liver. Meanwhile, EFPP had protective effects against alloxan-induced oxidative injury in mice, via increasing activities of SOD, CAT and GSH-Px and decreasing of MDA contents in liver and kidney of mice. Moreover, histopathology confirmed the capability of EFPP to intervene the damage in pancreas, kidney and liver tissues. The results suggested that EFPP possess hypoglycemic and antioxidant activities, and could be a potential source of natural hypoglycemic and antioxidants agent for functional foods or complementary medicines.

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Publication details

The article was received on 12 Jul 2017, accepted on 02 Sep 2017 and first published on 08 Sep 2017


Article type: Paper
DOI: 10.1039/C7FO01035D
Citation: Food Funct., 2017, Accepted Manuscript
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    Hypoglycemic and antioxidant effects of polysaccharides from the petioles and pedicels of Euryale ferox Salisb. on alloxan-induced hyperglycemic mice

    C. Wu, H. Wang, X. He, D. Wu, W. Yue and Q. Wu, Food Funct., 2017, Accepted Manuscript , DOI: 10.1039/C7FO01035D

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