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Diversidad genética de Mycobacterium tuberculosis circulando en la jurisdicción V de Jalapa, Veracruz, México / Genetic diversity of Mycobacterium tuberculosis circulating in the jurisdiction V from Jalapa, Veracruz, Mexico
Lefort, Betchaah; Pérez-Martínez, Damián; Viveros, Diana; Zenteno-Cuevas, Roberto.
  • Lefort, Betchaah; Universidad Veracruzana. Instituto de Salud Pública. Veracruz. MX
  • Pérez-Martínez, Damián; Universidad Veracruzana. Instituto de Ciencias de la Salud. Veracruz. MX
  • Viveros, Diana; Universidad Veracruzana. Veracruz. MX
  • Zenteno-Cuevas, Roberto; Universidad Veracruzana. Instituto de Salud Pública. Veracruz. MX
Rev. chil. infectol ; 38(5): 639-646, oct. 2021. mapas, ilus, tab
Article in Spanish | LILACS | ID: biblio-1388297
RESUMEN
ANTECEDENTES El estado de Veracruz se ubica en el sureste de México y presenta una alta prevalencia de tuberculosis (TBC) y drogo resistencia. Sin embargo, la composición de los genotipos circulantes es poco conocida.

OBJETIVO:

Caracterizar la diversidad genética de la TBC en la jurisdicción sanitaria V del estado de Veracruz.

MÉTODOS:

Estudio transversal realizado en aislados clínicos de pacientes con TBC residentes de la jurisdicción V. Se determinó la sensibilidad a medicamentos de primera línea. La genotipificación se realizó mediante espoligotipificación y MIRU-VNTR 15 loci.

RESULTADOS:

Entre los 74 aislados analizados se observó resistencia a un fármaco en 44 (59%) aislados. Linaje L4 (EuroAmericano) se presentó en 73 aislados. Se identificaron cinco sublinajes; H (40%), T (22%), LAM (16%), X (13%) y U (7%). El 32% de los aislados se agrupó mediante su espoligotipo y 40% en 10 complejos clonales.

CONCLUSIONES:

Es la primera descripción sobre la estructura genética de TBC en la región central de Veracruz. La diversidad de genotipos podría contribuir a su dispersión en la región. Esta información será útil para el desarrollo de intervenciones y reducir el impacto de TBC en la población.
ABSTRACT

BACKGROUND:

The state of Veracruz is placed in southeastern Mexico and has a high prevalence of tuberculosis (TB) and drug resistance. Nevertheless, the composition of circulating genotypes in the central region of the state is partially known.

AIM:

To characterize the genetic diversity of TB in the sanitary jurisdiction V of the state of Veracruz.

METHODS:

A cross-sectional study was conducted among clinical isolates from patients with TB living in the jurisdiction V, in Jalapa Ver., Mexico. Sensitivity to first-line drugs was determined, and genotyping was performed by spoligotyping and MIRU-VNTR 15 loci.

RESULTS:

Among the 74 isolates analyzed, resistance to one drug was observed in 44 isolates. L4 (EuroAmerican) was the major lineage identified. Five sublineages were the most abundant; H (40%), T (22%), LAM (16%), X (13%) and U (7%). Only 32% of the isolates were clustered by spoligotype and 40% were placed in ten clonal complexes.

CONCLUSIONS:

This is the first description of the genetic structure of TB in the central region of Veracruz. The diversity of genotypes could contribute to its dispersion. This information will be useful for the development of interventions to reduce the impact of TB in the population.
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Genetic Variation / Mycobacterium tuberculosis Type of study: Diagnostic study / Observational study / Prevalence study / Prognostic study / Risk factors Limits: Female / Humans / Male Country/Region as subject: Mexico Language: Spanish Journal: Rev. chil. infectol Journal subject: Communicable Diseases Year: 2021 Type: Article Affiliation country: Mexico Institution/Affiliation country: Universidad Veracruzana/MX

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Full text: Available Index: LILACS (Americas) Main subject: Genetic Variation / Mycobacterium tuberculosis Type of study: Diagnostic study / Observational study / Prevalence study / Prognostic study / Risk factors Limits: Female / Humans / Male Country/Region as subject: Mexico Language: Spanish Journal: Rev. chil. infectol Journal subject: Communicable Diseases Year: 2021 Type: Article Affiliation country: Mexico Institution/Affiliation country: Universidad Veracruzana/MX