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Lima ACDOD, Schmid KB, Melo HFD, Athayde RC, Monte RL, Almeida IND, Miranda SSD, Kritski A, Rossetti ML, Cordeiros-Santos M. Molecular characterization of nontuberculous Mycobacteria in a tuberculosis and HIV reference unit in the State of Amazonas, Brazil. Rev Soc Bras Med Trop 2022; 55:e0613. [PMID: 35946635 PMCID: PMC9344947 DOI: 10.1590/0037-8682-0613-2021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 04/13/2022] [Indexed: 11/21/2022] Open
Abstract
BACKGROUND In recent years, the prevalence of nontuberculous mycobacterial (NTM) infections has increased in different regions of the world. The American Thoracic Society (ATS) recommends standardized identification criteria, reinforcing the need for faster and less complicated clinical and laboratory techniques. METHODS In this retrospective study, NTM species isolated from pulmonary, extrapulmonary, and disseminated samples from patients treated at a TB/HIV reference unit in the State of Amazonas from 2011 to 2014 were identified through a combination of molecular techniques. RESULTS To identify the molecular technique, 50 cryopreserved NTM cultures were recovered and subcultivated in culture medium. The potentially pathogenic NTM species identified were M. avium, M. intracellulare, M. kansasii, M. chelonae, M. abscessus, M. fortuitum, and M. peregrinum. Results of GenoType® showed moderate agreement with those of genomic sequencing (kappa = 0.60), whereas the results obtained by the PRA-hsp65 technique disagreed with the results obtained by sequencing (kappa = 0.49). CONCLUSIONS Our findings highlight that GenoType CM is a good method for the identification of NTM, as well as the need for the application of standardized criteria, such as those set forth by the ATS.
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Affiliation(s)
- Ana Carolina de Oliveira de Lima
- Fundação Oswaldo Cruz, Instituto Oswaldo Cruz, Rio de Janeiro, RJ, Brasil.,Universidade do Estado do Amazonas, Programa de Pós-Graduação em Medicina Tropical, Manaus, AM, Brasil
| | - Karen Barros Schmid
- Secretaria de Estado da Saúde do Rio Grande do Sul, Centro de Desenvolvimento Científico e Tecnológico, Porto Alegre, RS, Brasil
| | | | | | | | - Isabela Neves de Almeida
- Universidade Federal de Ouro Preto, Escola de Farmácia, Departamento de Análises Clínicas, Ouro Preto, MG, Brasil
| | - Silvana Spíndola de Miranda
- Universidade Federal de Minas Gerais, Faculdade de Medicina, Departamento de Clínica Médica/Pneumologia/Tisologia, Belo Horizonte, MG, Brasil
| | - Afrânio Kritski
- Universidade Federal do Rio de Janeiro, Escola de Medicina, Programa Acadêmico de Tuberculose, Rio de Janeiro, RJ, Brasil
| | - Maria Lucia Rossetti
- Universidade Luterana do Brasil, Programa de Pós-Graduação em Biologia Molecular e Celular, Canoas, RS, Brasil
| | - Marcelo Cordeiros-Santos
- Universidade do Estado do Amazonas, Programa de Pós-Graduação em Medicina Tropical, Manaus, AM, Brasil.,Fundação de Medicina Tropical Dr. Heitor Vieira Dourado, Manaus, AM, Brasil
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