Kaya, S.Kaya, S.A.Polat, E.Erboğa, Zeynep FidanolDuran, Y.Polat, Fatin RüştüKaraboğa, İhsan2022-05-112022-05-1120201301-5680https://doi.org/10.5606/tgkdc.dergisi.2020.18816https://hdl.handle.net/20.500.11776/4438Background: In this experimental study, we aimed to investigate the effects of hesperetin, a natural flavonoid, on a lipopolysaccharideinduced acute lung injury model in rats. Methods: Between March 2019 and May 2019, a total of 18 adult male Wistar albino rats, weighing approximately 250 to 300 g, were randomly divided into three groups as control, lipopolysaccharide, and lipopolysaccharide + hesperetin groups (n=6 in each group). The wet/dry weight ratio of lung tissue was determined. Histopathological changes were examined using light and scanning electron microscopy. Pulmonary nuclear factor-kappa beta, inducible nitric oxide synthase, and alpha-smooth muscle antigen activity were determined with indirect immunohistochemical methods. Pulmonary apoptosis was detected with the terminal deoxynucleotidyl transferase dUTP nick-end labeling method. Tumor necrosis factor-alpha, interleukin-1 beta, interleukin-6, and interleukin-10 concentrations were measured with enzyme-linked immunosorbent assay. Results: Treatment with hesperetin significantly improved the architecture of lung tissue and reduced the wet/dry weight ratio, nuclear factor-kappa beta, inducible nitric oxide synthase, and alphasmooth muscle antigen expression, pulmonary apoptosis, and levels of proinflammatory cytokines. Conclusion: Our study results suggest that hesperetin has a potent protective effect against lipopolysaccharide-induced acute lung injury in rats via suppression of the proinflammatory cytokine cascade, nuclear factor-kappa beta, signaling pathway activation, and apoptosis. © 2020 All right reserved by the Turkish Society of Cardiovascular Surgery.en10.5606/tgkdc.dergisi.2020.18816info:eu-repo/semantics/openAccessAcute lung injuryInducible nitric oxide synthaseLipopolysaccharideNuclear factor-kappa betaPulmonary apoptosisTumor necrosis factor-alphaArticle282359368Q4WOS:0005298209000202-s2.0-85085133382Q3