ABSTRACT
Purpose To investigate the effect of resveratrol on acute lung injury induced by lipopolysaccharide (LPS) in mice.Methods Acute lung injury (ALI) was induced by LPS in mice. The changes of lung airway inspiratory resistance (Ri), expiratory resistance (Re), and dynamic lung compliance (Cdyn) were observed with pulmonary function test apparatus. Brochoalveolar lavage fluid (BALF) was collected, and the concentrations of interleukin 1β (IL-1β)、interleukin 6 (IL-6) and tumor necrosis factory α (TNF-α) were measured by ELISA. The ratio of wet to dry weight was calculated to assess lung edema. Pulmonary vascular permeability was examined with injection Evans blue to judge the destructive extent of alveolar epithelial cell and endothelial. Pathological section was made, and the histopathological change was observed with light microscope.Results Resveratrol can inhibit the elevation of Ri and Re, and the descent of Cdyn. Simultaneously, resveratrol reduced the concentration of IL-1β, IL-6 and TNF-α,as well as the wet to dry weight ratio and the pulmonary vascular permeability significantly. Furthermore, it also could attenuate the lung injury on histopathology.Conclusion The results show that pretreatment with resveratrol has a protective effect on ALI induced by LPS. The ultimate inhibiting and release of inflammatory factors were involved in the mechanism of the effects.