Longan pulp polysaccharides relieve intestinal injury in vivo and in vitro by promoting tight junction expression
文献类型： 外文期刊
作者： Bai, Yajuan 1 ; Huang, Fei 1 ; Zhang, Ruifen 1 ; Dong, Lihong 1 ; Jia, Xuchao 1 ; Liu, Lei 1 ; Yi, Yang 2 ; Zhang, Mingwe 1 ;
作者机构： 1.Minist Agr & Rural Affairs, Guangdong Acad Agr Sci, Guangdong Key Lab Agr Prod Proc, Key Lab Funct Foods,Sericultural & Agri Food Res, Guangzhou 510610, Guangdong, Peoples R China
2.Wuhan Polytech Univ, Coll Food Sci & Engn, Wuhan 430023, Hubei, Peoples R China
关键词： Polysaccharides; Longan pulp; Intestinal barrier; Tight junction; Structural characteristic
期刊名称：CARBOHYDRATE POLYMERS （ 影响因子：9.381； 五年影响因子：8.678 ）
ISSN： 0144-8617
年卷期： 2020 年 229 卷
页码：
收录情况： SCI
摘要： The integrity of the intestinal mucosal barrier is important for the health of the host. In this study, longan pulp polysaccharides (LP) prevented the intestinal mucosal injury by increasing the expression of mucin 2, tight junction proteins zonulae occludens-1 (ZO-1), claudin-1, claudin-4, and adherens junction E-cadherin in cyclophosphamide-treated mice. To further identify the principle bioactive component of LP, four acidic polysaccharides (LPIa, LPIIa, LPIIIa, and LPIVa) were purified, and their intestinal protection activity in vitro was compared. LPIa, LPIIa, and LPIIIa displayed an ability to increase mRNA expression of ZO-1, claudin-1, occludin, and E-cadherin in differentiated Caco-2 cells, especially LPIa. LPIa has specific structure characteristics: porous surface structure, a high molecular weight (1.47 x 105 Da), and two specific glycosidic linkages of a-Araf-(1 > and 5)-a-Araf-(1. These structure characteristics might primarily contribute to greater intestinal barrier protective effect of LPIa.
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