Abstract
The aim of the study was to investigate the effects of chrysin (CH), one of the natural flavonoids, against isoniazid lung damage caused by isoniazid (INH), which was widely used in the treatment of tuberculosis. Male Sprague-Dawley rats were randomly divided into five groups: a control group, INH-treated group, CH alone treated group 50 mg / kg, INH + CH 25 mg / kg treated group, and INH+ CH 50 mg / kg treated group. It was determined that INH caused oxidative damage by decreasing antioxidant enzyme activities such as glutathione peroxidase (GPx), superoxide dismutase (SOD), and catalase (CAT) and increasing lipid peroxidation (LPO). In addition, it was found that the administration of CH to INH-treated rats increased GSH level and antioxidant enzyme activities, and decreased lipid peroxidation. It was observed that the nuclear factor erythroid 2 related factor 2 (Nrf-2) and oxygenase-1 (HO-1) expression levels were up-regulated in the INH-treated group, and the expression of NF-κB increased in the INH-treated group in the immunohistochemical examination, and the CH administration, on the other hand, decreased the levels of these markers. Taken together, these results suggested that CH had beneficial effects in INH-induced lung toxicity by maintaining the oxidant-antioxidant balance and decreasing NF-κB, Nrf-2, and HO-1 expressions.