Background/Aims: Isoniazid (INH) and Rifampicin (RIF) are the first-line drugs used for tuberculosis (TB) treatment. Hepatotoxicity induced by anti-TB drugs leads to substantial morbidity, diminishing treatment effectiveness. Herein, we have investigated the effects of resveratrol (RSV) in the hepatotoxicity caused by INH and RIF in mice. Methods: Acute (3 days) or chronic liver injury (28 days) was induced in male BALB/c mice by co-administering INH and RIF. RSV was dosed 30 min prior to INH-RIF. Serum biochemical tests, liver histopathological examination, oxidative stress, MPO activity, cytokine production (TNF- α, IL-12p70 and IL-10), and mRNA expression of CYP2E1, SIRT1-1 and 7, and PPAR-γ/PGC1-α were evaluated. Results: Acute or chronic treatment with INH plus RIF induced hepatotoxicity in mice. RSV significantly decreased ALT and AST levels, MPO activity and cytokine levels. Furthermore, RSV reverted the decrease of both catalase and glutathione activities, and ameliorated the histopathological alterations associated to anti-TB drugs. Modulation of CYP2E1, SIRT1 and SIRT7, and PPAR-γ/ PGC1-α expression is likely involved in the protective effects of RSV in our model. Conclusions: Data shows that RSV was able to largely prevent the hepatotoxicity induced by INH and RIF in mice, mainly by modulating SIRT1, SIRT7 and CYP2E1 mRNA expression. RSV might well represent a useful strategy in the treatment of liver failures due to INH-RIF induced toxicity.
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