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    Protective Effect of Nigella Sativa in an Animal Model of Colon Anastomosis With Ischemia/Reperfusion Injury
    (Int College Of Surgeons, 2018) Bali, Ilhan; Polat, Fatin Rustu; Aziret, Mehmet; Sozen, Selim; Oruc, Cem; Coskunkan, Ufuk; Emir, Seyfi
    Objective: Anastomotic leaks are one of the chief complications after gastrointestinal surgery. The aim of this study was to evaluate whether Nigella sativa administration protects against ischemia/reperfusion injury on healing of colonic anastomosis in rats. Method: Thirty male Wistar albino rats, weighing between 200 and 240 g, were used in the study. They were randomly divided into three groups (n = 10 for each group): Anastomosis (group 1), anastomosis and ischemia/reperfusion injury (group 2), and treatment group of anastomosis, ischemia/reperfusion injury, and Nigella sativa (group 3). After 7 days, serum, plasma, and colonic tissue were obtained and then all rats were sacrificed. Tissue and serum level of total oxidant status, total antioxidant status, total thiol levels, hydroxyproline, interleukin-6, and TNF-alpha were determined and specimens were histopathologically evaluated. Results: In the Nigella sativa treated rats, serum hydroxyproline levels were significantly higher, while tissue levels were significantly lower than those seen in group 1 and group 2 (P = 0.007, P = 0.01, respectively). In the Nigella sativa group, the serum levels of TNF-alpha were significantly lower than those seen in group 1 and 2 (P = 0.001). Also, in group 3, the tissue IL-6 level was significantly higher than that seen in group 1 and group 2 (P = 0.009). The histopathologic analysis showed less edema and inflammatory cell infiltration in the Nigella sativa treated group, as well as a statistically significant difference according to the Chiu classification (P < 0.05). Conclusion: The results of this study indicate that Nigella sativa has a protective and therapeutic effect against ischemia/reperfusion injury on the healing of colonic anastomosis in rats.
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    Protective effects of hesperetin on lipopolysaccharide-induced acute lung injury in a rat model
    (Baycinar Medical Publ-Baycinar Tibbi Yayincilik, 2020) Kaya, Serkan; Kaya, Sinem Albayrak; Polat, Elif; Erboga, Zeynep Fidanol; Duran, Yasin; Polat, Fatin Rustu; Okuyan, Hamza Malik
    Background: In this experimental study, we aimed to investigate the effects of hesperetin. a natural flavonoid, on a lipopolysaccharide-induced 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 wetidry 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.