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Bedaquiline metabolism: enzymes and novel metabolites. | LitMetric
Bedaquiline is a recently approved drug for the treatment of multidrug-resistant tuberculosis. Adverse cardiac and hepatic drug reactions to bedaquiline have been noted in clinical practice. The current study investigated bedaquiline metabolism in human hepatocytes using a metabolomic approach. Bedaquiline N-demethylation via CYP3A4 was confirmed as the major pathway in bedaquiline metabolism. In addition to CYP3A4, we found that both CYP2C8 and CYP2C19 contributed to bedaquiline N-demethylation. The Km values of CYP2C8, CYP2C19, and CYP3A4 in bedaquiline N-demethylation were 13.1, 21.3, and 8.5 µM, respectively. We also identified a novel metabolic pathway of bedaquiline that produced an aldehyde intermediate. In summary, this study extended our knowledge of bedaquiline metabolism, which can be applied to predict and prevent drug-drug interactions and adverse drug reactions associated with bedaquiline.
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