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Molecules 2017, 22(2), 341; doi:10.3390/molecules22020341

Lycium barbarum L. Polysaccharide (LBP) Reduces Glucose Uptake via Down-Regulation of SGLT-1 in Caco2 Cell

1
Department of Nutrition and Food Hygiene, School of Public Health, Ningxia Medicine University, Yinchuan 750004, Ningxia, China
2
Department of Sanitary Chemistry, School of Public Health, Ningxia Medicine University, Yinchuan 750004, Ningxia, China
3
Department of Experimental Center, School of Public Health, Ningxia Medicine University, Yinchuan 750004, Ningxia, China
4
Department of Epidemiology and Health Statistics, School of Public Health, Ningxia Medicine University, Yinchuan 750004, Ningxia, China
*
Author to whom correspondence should be addressed.
Academic Editor: Quan-Bin Han
Received: 30 December 2016 / Revised: 2 February 2017 / Accepted: 13 February 2017 / Published: 22 February 2017
(This article belongs to the Special Issue Natural Polysaccharides)
View Full-Text   |   Download PDF [6551 KB, uploaded 22 February 2017]   |  

Abstract

Lycium barbarum L. polysaccharide (LBP) is prepared from Lycium barbarum L. (L. barbarum), which is a traditional Chinese medicine. LPB has been shown to have hypoglycemic effects. In order to gain some mechanistic insights on the hypoglycemic effects of LBP, we investigated the uptake of LBP and its effect on glucose absorption in the human intestinal epithelial cell line Caco2 cell. The uptake of LBP through Caco2 cell monolayer was time-dependent and was inhibited by phloridzin, a competitive inhibitor of SGLT-1. LPB decreased the absorption of glucose in Caco2 cell, and down-regulated the expression of SGLT-1. These results suggest that LBP might be transported across the human intestinal epithelium through SGLT-1 and it inhibits glucose uptake via down-regulating SGLT-1. View Full-Text
Keywords: Lycium barbarum L. polysaccharide; Caco2 cell monolayer; SGLT-1; GLUT-2 Lycium barbarum L. polysaccharide; Caco2 cell monolayer; SGLT-1; GLUT-2
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Cai, H.; Yang, X.; Cai, Q.; Ren, B.; Qiu, H.; Yao, Z. Lycium barbarum L. Polysaccharide (LBP) Reduces Glucose Uptake via Down-Regulation of SGLT-1 in Caco2 Cell. Molecules 2017, 22, 341.

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