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pyrazinamide

  • Open Access
    Direct Determination of Pyrazinamide (PZA) Susceptibility by Sputum Microscopic Observation Drug Susceptibility (MODS) Culture at Neutral pH: the MODS-PZA Assay
    Mycobacteriology and Aerobic Actinomycetes
    Direct Determination of Pyrazinamide (PZA) Susceptibility by Sputum Microscopic Observation Drug Susceptibility (MODS) Culture at Neutral pH: the MODS-PZA Assay

    Pyrazinamide (PZA) is considered the pivot drug in all tuberculosis treatment regimens due to its particular action on the persistent forms of Mycobacterium tuberculosis. However, no drug susceptibility test (DST) is considered sufficiently reliable for routine application. Although molecular tests are endorsed, their application is limited to known PZA resistance...

    Roberto Alcántara, Patricia Fuentes, Lisette Marin, Daniela E. Kirwan, Robert H. Gilman, Mirko Zimic, Patricia Sheen
  • Direct Detection of Pyrazinamide Resistance in <span class="named-content genus-species" id="named-content-1">Mycobacterium tuberculosis</span> by Use of <em>pncA</em> PCR Sequencing
    Mycobacteriology and Aerobic Actinomycetes
    Direct Detection of Pyrazinamide Resistance in Mycobacterium tuberculosis by Use of pncA PCR Sequencing

    An in-house-developed pncA sequencing assay for analysis of pyrazinamide (PZA) resistance was evaluated using 162 archived Mycobacterium tuberculosis complex (MTBC) isolates with phenotypic PZA susceptibility profiles that were well defined by analysis of Bactec MGIT 960 PZA kit and PZase activity data. Preliminary results showed 100% concordance between ...

    Kingsley King-Gee Tam, Kenneth Siu-Sing Leung, Gilman Kit-Hang Siu, Kwok-Chiu Chang, Samson Sai-Yin Wong, Pak-Leung Ho, Eunice Ka-Chun Leung, Wing-Cheong Yam
  • Open Access
    MODS-Wayne, a Colorimetric Adaptation of the Microscopic-Observation Drug Susceptibility (MODS) Assay for Detection of <em>Mycobacterium tuberculosis</em> Pyrazinamide Resistance from Sputum Samples
    Mycobacteriology and Aerobic Actinomycetes
    MODS-Wayne, a Colorimetric Adaptation of the Microscopic-Observation Drug Susceptibility (MODS) Assay for Detection of Mycobacterium tuberculosis Pyrazinamide Resistance from Sputum Samples

    Although pyrazinamide (PZA) is a key component of first- and second-line tuberculosis treatment regimens, there is no gold standard to determine PZA resistance. Approximately 50% of multidrug-resistant tuberculosis (MDR-TB) and over 90% of extensively drug-resistant tuberculosis (XDR-TB) strains are also PZA resistant.

    Roberto Alcántara, Patricia Fuentes, Ricardo Antiparra, Marco Santos, Robert H. Gilman, Daniela E. Kirwan, Mirko Zimic, Patricia Sheen
  • Letter to the Editor
    Improved Bactec MGIT 960 Pyrazinamide Test Decreases Detection of False Mycobacterium tuberculosis Pyrazinamide Resistance
    Alessandro Mustazzolu, Angelo Iacobino, Federico Giannoni, Claudio Piersimoni, the Italian Multicentre Study on Resistance to Antituberculosis Drugs (SMIRA) Group, Lanfranco Fattorini
  • Mycobacteriology and Aerobic Actinomycetes
    Non-pncA Gene-Mutated but Pyrazinamide-Resistant Mycobacterium tuberculosis: Why Is That?
    Jim Werngren, Erik Alm, Mikael Mansjö
  • Mycobacteriology and Aerobic Actinomycetes
    Evaluation of Colorimetric Methods Using Nicotinamide for Rapid Detection of Pyrazinamide Resistance in Mycobacterium tuberculosis
    Niuris C. Mirabal, Sergio L. Yzquierdo, Dihadenys Lemus, Mariela Madruga, Yoslaine Milián, Miguel Echemendía, Howard Takiff, Anandi Martin, Patrick Van der Stuyf, Juan Carlos Palomino, Ernesto Montoro
  • Mycobacteriology and Aerobic Actinomycetes
    Potential for Erroneous Results Indicating Resistance When Using the Bactec MGIT 960 System for Testing Susceptibility of Mycobacterium tuberculosis to Pyrazinamide
    Pamela Chedore, Lina Bertucci, Joyce Wolfe, Meenu Sharma, Frances Jamieson
  • Mycobacteriology and Aerobic Actinomycetes
    Sputum PCR-Single-Strand Conformational Polymorphism Test for Same-Day Detection of Pyrazinamide Resistance in Tuberculosis Patients
    Patricia Sheen, Melissa Méndez, Robert H. Gilman, Lizeth Peña, Luz Caviedes, Mirko J. Zimic, Ying Zhang, David A. J. Moore, Carlton A. Evans
  • Mycobacteriology and Aerobic Actinomycetes
    Pyrazinamide Resistance among South African Multidrug-Resistant Mycobacterium tuberculosis Isolates
    Matsie Mphahlele, Heidi Syre, Håvard Valvatne, Ruth Stavrum, Turid Mannsåker, Tshilidzi Muthivhi, Karin Weyer, P. Bernard Fourie, Harleen M. S. Grewal
  • Mycobacteriology and Aerobic Actinomycetes
    Development and Evaluation of a Line Probe Assay for Rapid Identification of pncA Mutations in Pyrazinamide-Resistant Mycobacterium tuberculosis Strains
    Jun-Ichiro Sekiguchi, Tomohiko Nakamura, Tohru Miyoshi-Akiyama, Fumiko Kirikae, Intetsu Kobayashi, Ewa Augustynowicz-Kopeć, Zofia Zwolska, Koji Morita, Toshinori Suetake, Hiroshi Yoshida, Seiya Kato, Toru Mori, Teruo Kirikae

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