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Phloretin exerts hypoglycemic effect in streptozotocin-induced diabetic rats and improves insulin resistance in vitro

Authors Shen X, Zhou N, Mi L, Hu Z, Wang L, Liu X, Zhang S

Received 8 November 2016

Accepted for publication 7 December 2016

Published 7 February 2017 Volume 2017:11 Pages 313—324


Checked for plagiarism Yes

Review by Single anonymous peer review

Peer reviewer comments 2

Editor who approved publication: Dr Qiongyu Guo

Xin Shen,1,* Nan Zhou,1,* Le Mi,1 Zishuo Hu,2 Libin Wang,1 Xueying Liu,1 Shengyong Zhang1

1Department of Medicinal Chemistry, School of Pharmacy, 2Student Brigade, The Fourth Military Medical University, Xi’an, Shaanxi, People’s Republic of China

*These authors contributed equally to this work

Abstract: The present study investigated the possible antiobesity and hypoglycemic effects of phloretin (Ph). In an attempt to discover the hypoglycemic effect and potential mechanism of Ph, we used the streptozotocin-induced diabetic rats and (L6) myotubes. Daily oral treatment with Ph for 4 weeks significantly (P<0.05) reduced postprandial blood glucose and improved islet injury and lipid metabolism. Glucose consumption and glucose tolerance were improved by Ph via GOD–POD method. Western blot results revealed that the expression of Akt, PI3K, IRS-1, and GLUT4 were upregulated in skeletal muscle of T2D rats and in L6 myotubes by Ph. The immunofluorescence studies confirmed that Ph improved the translocation of GLUT4 in L6 myotubes. Ph exerted hypoglycemic effects in vivo and in vitro, hence it may play an important role in the management of diabetes.

Keywords: phloretin, diabetes, insulin sensitivity, blood glucose consumption, skeletal muscle

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