Lycium barbarum polysaccharides reduce intestinal ischemia/reperfusion injuries in rats.

Abstract:

:Inflammation and oxidative stress exert important roles in intestinal ischemia-reperfusion injury (IRI). Lycium barbarum polysaccharides (LBPs) have shown effective antioxidative and immunomodulatory functions in different models. The purpose of the present study was to assess the effects and potential mechanisms of LBPs in intestinal IRI. Several free radical-generating and lipid peroxidation models were used to assess the antioxidant activities of LBPs in vitro. A common IRI model was used to induce intestinal injury by clamping and unclamping the superior mesenteric artery in rats. Changes in the malondialdehyde (MDA), tumor necrosis factor (TNF)-α, activated nuclear factor (NF)-κB, intracellular adhesion molecule (ICAM)-1, E-selectin, and related antioxidant enzyme levels, polymorphonuclear neutrophil (PMN) accumulation, intestinal permeability, and intestinal histology were examined. We found that LBPs exhibited marked inhibitory action against free radicals and lipid peroxidation in vitro. LBPs increased the levels of antioxidant enzymes and reduced intestinal oxidative injury in animal models of intestinal IRI. In addition, LBPs inhibited PMN accumulation and ICAM-1 expression and ameliorated changes in the TNF-α level, NF-κB activation, intestinal permeability, and histology. Our results indicate that LBPs treatment may protect against IRI-induced intestinal damage, possibly by inhibiting IRI-induced oxidative stress and inflammation.

journal_name

Chem Biol Interact

authors

Yang X,Bai H,Cai W,Li J,Zhou Q,Wang Y,Han J,Zhu X,Dong M,Hu D

doi

10.1016/j.cbi.2013.05.010

subject

Has Abstract

pub_date

2013-08-25 00:00:00

pages

166-72

issue

3

eissn

0009-2797

issn

1872-7786

pii

S0009-2797(13)00126-9

journal_volume

204

pub_type

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