Rapid tests for the detection of the Mycobacterium abscessus subsp. bolletii strain responsible for an epidemic of surgical-site infections in Brazil

Rapid tests for the detection of the Mycobacterium abscessus subsp. bolletii strain responsible for an epidemic of surgical-site infections in Brazil

Autor Matsumoto, Cristianne Kayoko Autor UNIFESP Google Scholar
Chimara, Erica Google Scholar
Ramos, Jesus Pais Google Scholar
Campos, Carlos Eduardo Dias Google Scholar
Caldas, Paulo Cesar de Souza Google Scholar
Lima, Karla Valeria Batista Google Scholar
Lopes, Maria Luiza Google Scholar
Duarte, Rafael Silva Google Scholar
Leao, Sylvia Cardoso Autor UNIFESP Google Scholar
Instituição Universidade Federal de São Paulo (UNIFESP)
Instituto Adolfo Lutz
Escola Nacional de Saúde Pública-Fiocruz Centro de Referência Professor Hélio Fraga
Instituto Evandro Chagas
Universidade Federal do Rio de Janeiro Instituto de Microbiologia Professor Paulo de Góes
Resumo A single strain of Mycobacterium abscessus subsp. bolletii, characterised by a particular rpoB sequevar and two highly related pulsed field gel electrophoresis patterns has been responsible for a nationwide outbreak of surgical infections in Brazil since 2004. In this study, we developed molecular tests based on polymerase chain reaction restriction-enzyme analysis (PRA) and sequencing for the rapid identification of this strain. Sequences of 15 DNA regions conserved in mycobacteria were retrieved from GenBank or sequenced and analysed in silico. Single nucleotide polymorphisms specific to the epidemic strain and located in enzyme recognition sites were detected in rpoB, the 3' region of the 16S rDNA and gyrB. The three tests that were developed, i.e., PRA-rpoB, PRA-16S and gyrB sequence analysis, showed 100%, 100% and 92.31% sensitivity and 93.06%, 90.28% and 100% specificity, respectively, for the discrimination of the surgical strain from other M. abscessus subsp. bolletii isolates, including 116 isolates from 95 patients, one environmental isolate and two type strains. The results of the three tests were stable, as shown by results obtained for different isolates from the same patient. In conclusion, due to the clinical and epidemiological importance of this strain, these tests could be implemented in reference laboratories for the rapid preliminary diagnosis and epidemiological surveillance of this epidemic strain.
Palavra-chave Mycobacterium abscessus
epidemic
rapid test
rpoB
epidemiological surveillance
Idioma Inglês
Data de publicação 2012-12-01
Publicado em Memórias do Instituto Oswaldo Cruz. Instituto Oswaldo Cruz, Ministério da Saúde, v. 107, n. 8, p. 969-977, 2012.
ISSN 0074-0276 (Sherpa/Romeo, fator de impacto)
Publicador Instituto Oswaldo Cruz, Ministério da Saúde
Extensão 969-977
Fonte http://dx.doi.org/10.1590/S0074-02762012000800002
Direito de acesso Acesso aberto Open Access
Tipo Artigo
Web of Science WOS:000328105100002
SciELO S0074-02762012000800002 (estatísticas na SciELO)
Endereço permanente http://repositorio.unifesp.br/handle/11600/7448

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