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- W2153793702 abstract "Polydatin (PD) has anti-inflammatory and anti-apoptotic effects in ischemic-reperfusion injury. Moreover, inflammatory responses and apoptosis play a role in the development of burn-induced lung injuries. Based on these findings, in this study we investigated the hypothesis that PD can ameliorate lung injury induced by extensive burns via reduction of inflammation and apoptosis.Rats were subjected to 30% total body surface area burn injury followed by resuscitation. The treatment group received 45 mg/kg PD, and the burn group received the same amount of normal saline solution. No burn injury was inflicted in the sham group. Microvascular permeability, interstitial edema, neutrophil recruitment, and histopathological changes were detected by measuring Evans blue concentration, wet-to-dry lung weight ratio (W/D), myeloperoxidase (MPO) activity, and hematoxylin and eosin staining, respectively. To investigate the mechanism of action of PD, enzyme-linked immunosorbent assay, cell counting, terminal deoxyribonucleotidyl transferase-mediated deoxyuridine 5-triphosphate-digoxigenin nick end labeling (TUNEL) staining, fluorometric assay, and Western blot were used for assessing levels of inflammatory cytokines (tumor necrosis factor alpha, interleukin [IL]-1β, and IL-6), total number of cells, and concentration of polymorphonuclear leukocytes (PMNs) in bronchoalveolar lavage fluid (BALF), the number of apoptotic cells, caspase-3 activity, and apoptosis-related proteins including Bax and Bcl-xl, respectively.Burn-injury rats exhibited significant lung injury characterized by the deterioration of histopathological characteristics, pulmonary microvascular hyperpermeability, and a high W/D, which were attenuated by PD (P = .007 for permeability, P = .004 for W/D). PD inhibited the burn-induced inflammatory response, as evidenced by the down-regulation of lung MPO activity (P = .008), total number of cells, PMN concentration in BALF, and the local and systemic levels of the pro-inflammatory cytokines examined. Moreover, PD treatment dramatically prevented burn-induced pulmonary cell apoptosis in lungs, as reflected by the decrease in the number of TUNEL-positive cells (P = .002) and changes in Bax, Bcl-xl, and caspase-3 activity (P = .03).PD ameliorates burn-induced lung injury via its anti-inflammatory and anti-apoptotic effects, and PD treatment may therefore serve as a potential therapeutic target for the treatment of critical burn injuries." @default.
- W2153793702 created "2016-06-24" @default.
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- W2153793702 date "2014-05-13" @default.
- W2153793702 modified "2023-10-13" @default.
- W2153793702 title "Protective Effect of Polydatin Against Burn-Induced Lung Injury in Rats" @default.
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- W2153793702 doi "https://doi.org/10.4187/respcare.02831" @default.
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