α-Lipoic acid 후처치가 내독소로 유발된 급성폐손상에 미치는 효과 = The Efficacy of α-Lipoic Acid on the Endotoxin-induced Acute Lung Injury

다국어 초록 (Multilingual Abstract)

Background: Oxidative stress may play an important role in the pathogenesis of endotoxin-induced acute lung injury (ALI). This study evaluated the therapeutic effect of α-lipoic acid, a nonenzymatic antioxidant, in a rat model of lipopolysaccharide (LPS) induced ALI. Materials and Methods: ALI was induced in Sprague-Dawley rats by instilling LPS (E.coli, 3mg/Kg) into the trachea. The rats were classified into the control, control+α-lipoic acid, LPS, and LPS+α-lipoic acid groups. The lung lavage neutrophil count, cytokine-induced neutrophil chemoattractant (CINC), lung myeloperoxidase (MPO), and cytokine concentrations (TNF-α, IL-1ß, IL-6 and IL-10) were measured at 2 h and 6 h after LPS administration. Results: The total cell and neutrophil counts of the LPS+α-lipoic acid groups were significantly lower than the LPS groups. The protein concentration in the BAL fluid was similar in the LPS groups and LPS+α-lipoic acid groups. The TNF-α, IL-1ß, and IL-6 concentrations in the BAL fluid were not decreased by the α-lipoic acid treatment in the LPS treated rats. Conclusions: Although α-lipoic acid decreased the level of LPS-induced neutrophil infiltration into the lung, it could not attenuate the LPS-induced ALI at the dose administered in this study. (Tuberc Respir Dis 2007; 62: 105-112)

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