How To Optimally Combine Genotypic and Phenotypic Drug Susceptibility Testing Methods for Pyrazinamide
نویسندگان
چکیده
منابع مشابه
Comparison of phenotypic and genotypic methods for pyrazinamide susceptibility testing.
OBJECTIVES To evaluate Pyrazinamide (PZA) susceptibility results obtained by phenotypic MGIT 960 TB system against enzymatic Pyrazinamidase assay and genotypic pncA gene sequencing. To find the prevalence of infections caused by M. bovis in PZA resistant M. tuberculosis complex isolates. METHODS 33 consecutive PZA resistant and 30 consecutive PZA susceptible isolates reported for PZA suscepti...
متن کاملComparison of phenotypic and genotypic methods for pyrazinamide susceptibility testing with Mycobacterium tuberculosis.
Mycobacterium tuberculosis converts pyrazinamide to its active form by using the enzyme pyrazinamidase. This enzyme is coded for on the pncA gene, and mutations in the pncA gene result in absence of active enzyme, conferring resistance to the drug pyrazinamide. We investigated 27 strains of Mycobacterium tuberculosis suspected of being multidrug resistant. Each isolate was tested for susceptibi...
متن کاملEvolution of In vitro Drug Susceptibility Testing of Pyrazinamide
Pyrazinamide is an important drug used in anti tubercular treatment which helps in killing old and semi dormant bacilli which are not metabolically active. Drug susceptibility tests are routinely performed before initiating multidrug drug resistant tuberculosis treatment. However, many Tuberculosis laboratories do not undertake drug susceptibility testing of Pyrazinamide as it is difficult to p...
متن کاملEvaluation of methods for testing the susceptibility of clinical Mycobacterium tuberculosis isolates to pyrazinamide.
Pyrazinamide (PZA) is a first-line antituberculosis (anti-TB) drug capable of killing nonreplicating, persistent Mycobacterium tuberculosis. However, reliable testing of the susceptibility of M. tuberculosis to PZA is challenging. Using 432 clinical M. tuberculosis isolates, we compared the performances of five methods for the determination of M. tuberculosis susceptibility to PZA: the MGIT 960...
متن کاملCorrelation of different phenotypic drug susceptibility testing methods for four fluoroquinolones in Mycobacterium tuberculosis.
BACKGROUND Molecular resistance testing fails to explain all fluoroquinolone resistance, with a continued need for a suitable rapid phenotypic drug susceptibility testing method. OBJECTIVE To evaluate the optimal method for phenotypic fluoroquinolone susceptibility testing. METHODS Using Löwenstein-Jensen medium, Middlebrook 7H11 agar, BACTEC-MGIT 960 and the resazurin microtitre plate assa...
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ژورنال
عنوان ژورنال: Antimicrobial Agents and Chemotherapy
سال: 2020
ISSN: 0066-4804,1098-6596
DOI: 10.1128/aac.01003-20