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Δευτέρα 21 Μαΐου 2018

Oxidative Stress and First-Line Antituberculosis Drug-Induced Hepatotoxicity [PublishAheadOfPrint]

Hepatotoxicity induced by antituberculosis drugs is a serious adverse reaction with significant morbidity and even rarely mortality. This form of toxicity potentially impacts the treatment outcome of tuberculosis in some patients. Confining to first-line antituberculosis drugs, this review addresses whether and how oxidative stress, and more broadly, disturbance in redox homeostasis alongside mitochondrial dysfunction, may contribute to the hepatotoxicity induced by them. Risk factors for such toxicity that have been identified, in addition to genetic factors, principally include old age, malnutrition, alcoholism, chronic hepatitis C and chronic hepatitis B infection, HIV infection and pre-existing liver disease. Importantly, these comorbid conditions are associated with oxidative stress and beyond, per se. Thus, the shared pathogenetic mechanism(s) for liver injury might be in operation, due to disease-drug interaction. Our current ability to predict, prevent, or treat hepatotoxicity (other than removing potentially hepatotoxic drugs) remains limited. More translational research to unravel the pathogenesis, inclusive of the underlying molecular bases, regarding antituberculosis drug-induced hepatotoxicity is needed, and so is clinical research pertaining to the advances in therapy, with antioxidants and beyond. The role of pharmacogenetics in the clinical management of drug-induced hepatotoxicity also likely merits further evaluation.



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