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Identification of Potential Anti-TB Candidates: A Step-by-Step Guide to Synthesis, MIC Determination, and Cytotoxicity Assessment in Mammalian Cells
Published on: May 22, 2026
Identification of a Mycobacterium tuberculosis strain with stable, low-level resistance to isoniazid
Bereneice M Madison1, Salman H Siddiqi, Leonid Heifets
1Division of Laboratory Systems, Public Health Practice Program Office, Centers for Disease Control Prevention, Atlanta, Georgia 30341, USA. bdm6@cdc.gov
Abstract:
We have identified a potential quality control strain of Mycobacterium tuberculosis to monitor isoniazid susceptibility testing. This strain (strain A) has a stable phenotypic low-level resistance to isoniazid, has a mutation of C (-15) --> T in the inhA promoter region, and gave consistent susceptibility test results in 141 laboratories.
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