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beta-glucan protects against burn-induced oxidative organ damage in rats.

Abstract：

:Thermal injury may lead to systemic inflammatory response, and multiple organ failure. Generation of reactive oxygen radicals and lipid peroxidation play important roles in burn-induced remote organ injury. In the present study, we investigated the putative protective effect of local or systemic beta-glucan treatment on burn-induced remote organ injury. Wistar albino rats were exposed to 90 degrees C bath for 10 s to induce thermal trauma. beta-glucan (3.75 mg/rat locally or 50 mg/kg orally) or saline was administered immediately after the trauma and were repeated twice daily in 48 h groups. Rats were decapitated either 6 or 48 h after burn injury and the skin, lung, liver, ileum and kidney tissues were taken for the measurement of malondialdehyde (MDA)--an index of lipid peroxidation--and glutathione (GSH)--a key antioxidant--levels. Neutrophil infiltration was evaluated by the measurement of tissue myeloperoxidase (MPO) activity, while the tumor necrosis factor-alpha (TNF-alpha) levels were measured in serum samples. Skin tissues were also examined microscopically. Severe skin scald injury (30% of total body surface area) caused significant decreases in GSH levels of the liver and intestinal tissues (p<0.01-<0.001), while MDA levels were significantly (p<0.01-p<0.001) increased at post-burn 6 and 48 h. Both local and systemic beta-glucan treatments significantly reversed (p<0.01-p<0.001) the elevations in MDA levels, while reduced GSH levels were reversed back to control levels (p<0.01-p<0.001); and the raised MPO levels were significantly decreased (p<0.05-p<0.001). The results indicate that both systemic and local administration of beta-glucan were effective against burn-induced oxidative tissue damage in the rat. beta-glucans, besides their immunomodulatory effects, have additional antioxidant properties. Therefore, beta-glucans merit consideration as therapeutic agents in the treatment of burn injuries.

journal_name

Int Immunopharmacol

journal_title

International immunopharmacology

authors

Toklu HZ,Sener G,Jahovic N,Uslu B,Arbak S,Yeğen BC

doi

10.1016/j.intimp.2005.07.016

keywords:

subject

Has Abstract

pub_date

2006-02-01 00:00:00

pages

156-69

issue

2

eissn

1567-5769

issn

1878-1705

pii

S1567-5769(05)00212-2

journal_volume

6

pub_type

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