• Turk J Med Sci · Jan 2015

    Protective effect of β-glucan on acute lung injury induced by lipopolysaccharide in rats.

    • Meryem Iraz, Mustafa Iraz, Mukaddes Eşrefoğlu, and Mehmet Şerif Aydin.
    • Turk J Med Sci. 2015 Jan 1; 45 (2): 261-7.

    Background/AimLipopolysaccharide (LPS)-induced endotoxemia can cause serious organ damage such as acute lung injury and death by triggering the secretion of proinflammatory cytokines and acute-phase reactants. The goal of this study was to evaluate the effects of β-glucan on inflammatory mediator levels and histopathological changes in LPS-induced endotoxemia.Materials And MethodsForty-seven male Wistar albino rats were randomly allocated into four groups as follows: control group, LPS group (10 mg/kg LPS), LPS + β-glucan group (100 mg/kg β-glucan before LPS administration), and β-glucan group. Twelve hours after LPS administration, lung and serum samples were collected. Concentrations of IL-6, IL-8, C-reactive protein (CRP), and procalcitonin were measured in the serum at hours 0 (basal) and 12. The severity of lung damage was assessed by an appropriate histopathological scoring system.ResultsSerum levels of CRP in the LPS group at 12 h were significantly higher than in the other groups, whereas serum IL-6 levels in the LPS and LPS + β-glucan groups at 12 h were significantly decreased. The mean histopathological damage score of the LPS group was slightly higher than that of the LPS + β-glucan group. Moreover, mortality rate was significantly decreased in the LPS + β-glucan group versus the LPS group.Conclusionβ-glucan reduces endotoxemia-induced mortality and might be protective against endotoxemia-induced lung damage.

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