New technologies for the study of tuberculosis: An analysis of the detection and transmission of circulating M. tuberculosis

Authors

  • Maria Lucia Rosa Rossetti Lutheran University of Brazil image/svg+xml
  • Elis Regina Dalla-Costa Centro de Desenvolvimento Científico e Tecnológico (CDCT), Secretaria Estadual da Saúde (SES/RS), Porto Alegre, Rio Grande do Sul
  • Marcia Susana Nunes Silva Lutheran University of Brazil image/svg+xml
  • Natali Linck Secretaria Estadual da Saúde - SES/RS
  • Pedro Eduardo Almeida da Silva Fundação Universidade do Rio Grande (FURG), Rio Grande, Rio Grande do Sul.

DOI:

https://doi.org/10.51723/ccs.v28i01.124

Keywords:

tuberculose, epidemiologia molecular, diagnóstico por PCR, resistência

Abstract

In addition to detecting patients with tuberculosis (TB), it is important to monitor circulating M. tuberculosis genotypes. Even after the implantation of Xpert® MTB/RIF, the diagnosis is still based only by bacilloscopy, which have a low sensitivity, in most laboratories. Objective: To use DNA analysis for diagnosis and identification of circulating genotypes in a population of Rio Grande do Sul, Brazil.
Methodology: Clinical samples were analyzed by Detect-TB (Labtest, MG), real-time PCR (Xpert® MTB/RIF) and compared to bacilloscopy. Genotyping was performed by spoligotyping. Results: The accuracy of Detect-TB was similar to Xpert® MTB / RIF, but Detect-TB was more cost-effective when used with bacilloscopy. The genotypes LAM5, RDRio and like-Pinni2, related to treatment resistance, were being transmitted among this group, and the majority of the resistant to isoniazid (78.5%) and the resistant to rifampicin (92.1%) presented the
most known mutations. Conclusion: The application of DNA technologies can help in the control of TB, both in rapid diagnosis and in the identification of resistant profiles, allowing adequate treatment to the patients.

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Author Biographies

  • Maria Lucia Rosa Rossetti, Lutheran University of Brazil

    - Curso de pós-graduação em biologia molecular e celular aplicado a Saúde, Universidade Luterana do Brasil (ULBRA), Canoas, Rio Grande do Sul.
    - Centro de Desenvolvimento Científico e Tecnológico (CDCT), Secretaria Estadual da Saúde (SES/RS), Porto Alegre, Rio Grande do Sul

    Correspondência:
    Maria Lucia Rosa Rossetti
    Endereço: Rua carvalho Monteiro, 210/201 Petrópolis 90470-100
    Endereço eletrônico: mrossett@terra.com.br
    Telefone de contato: 51 34774000/2474 e 984054239

  • Marcia Susana Nunes Silva, Lutheran University of Brazil

    Curso de pós-graduação em biologia molecular e celular aplicado a Saúde,
    Universidade Luterana do Brasil (ULBRA), Canoas, Rio Grande do Sul

  • Natali Linck, Secretaria Estadual da Saúde - SES/RS

    Centro de Desenvolvimento Científico e Tecnológico (CDCT), Secretaria Estadual da Saúde (SES/RS), Porto Alegre, Rio Grande do Sul.

References

Published

2018-02-09

Issue

Section

Clínica Assistencial

How to Cite

1.
New technologies for the study of tuberculosis: An analysis of the detection and transmission of circulating M. tuberculosis. Com. Ciências Saúde [Internet]. 2018 Feb. 9 [cited 2026 Feb. 11];28(01):85-90. Available from: https://revistaccs.espdf.fepecs.edu.br/index.php/comunicacaoemcienciasdasaude/article/view/124

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