Publication date: May 2017
Source:International Journal of Biological Macromolecules, Volume 98
Author(s): Yuting Wang, Dingbo Lin, Xiaoli Wang, Wei Zhu, Junli Ye, Guohuai Li, Zhaocheng Ma, Xiuxin Deng
Peach [Prunus persica (L.)] gum exudates are produced by the trunks and fruits in peach gummosis. Clinically, these exudates have been used to treat diabetes in China, though the molecular mechanism underlying remains unclear. In the current study, a novel peach gum-derived polysaccharide was isolated, designated as PGPSD, and its anti-diabetic effect was assessed in mice. This polysaccharide was composed of arabinose, xylose and galactose in the molar ratio of 5.98:1:3.55, with the average molecular weight at 1.00×106Da. The animal study demonstrated that the PGPSD polysaccharide significantly lowered the postprandial blood glucose in streptozotocin-induced diabetic mice. Histology and immunohistochemistry results further confirmed that the application of PGPSD polysaccharide partially restored the pancreatic islets in diabetic mice, and enhanced the expression of pancreatic duodenal homeobox-1, insulin and hexokinase1. Collectively, the data suggested that the peach gum-derived polysaccharide had a meaningful potential as a non-insulin therapeutic compound in the treatment of diabetes.
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