Genotype characterization of 80 strains of Mycobacterium in Uruguay

Authors

  • María Noel Cortinas Universidad de la República, Facultad de Ciencias, Centro Técnico de Análisis Genéticos, Profesor Adjunto. Asociación Española Primera de Socorros Mutuos, Laboratorio de Biología Molecular. Magister en Ciencias Biológicas
  • Marina Fernández Asociación Española Primera de Socorros Mutuos, Laboratorio de Análisis Clínicos, Licenciada en Laboratorio Clínico
  • María Inés Valeta Asociación Española Primera de Socorros Mutuos, Laboratorio de Análisis Clínicos, Subjefe. Médico Microbiólogo
  • María del Rosario Uriarte Universidad de la República, Programa de Desarrollo de las Ciencias Básicas, Investigador. Doctora en Ciencias Biológicas. Asociación Española Primera de Socorros Mutuos, Laboratorio de Biología Molecular, Responsable
  • María Cristina Mogdasy Asociación Española Primera de Socorros Mutuos, Laboratorio de Análisis Clínicos, Jefe. Médico Microbiólogo. Consultante de Enfermedades Infecciosas

Keywords:

MYCOBACTERIUM, MYCOBACTERIUM TUBERCULOSIS, MYCOBACTERIOSIS, GENOTYPE

Abstract

Traditional methods to determine phenotype identification for mycobacterium are longer as compared with cellular procedures (4 to 6 weeks and 36 to 72 hours respectively).
In Uruguay, the incidence of tuberculosis Mycobacterium is low and data on pulmonary tuberculosis cases but caused by non-tuberculosis Mycobacterium (MNT) -normally saprophytes- is lacking.
From a therapeutic point of view, diagnosis based on an accurate identification of Mycobacterium infectant may be significant since treatment and management differ according to the strain found.
Two DNA molecular markers were chosen in our laboratory to diagnose Mycobacterium through genotype identification: IS6110 insertion element and ribosomal DNA sequences 16s (DNAr 16s) to determine specific identity within Mycobacterium.
Once selected molecular techniques were updated, we undertook a retrospective study of 80 isolates identified as Mycobacterium by phenotype methods. Most of the isolates (75/80) were tuberculosis Mycobacterium strains. The remained five were identified as MNT strains, of which three caused pulmonary infections.

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Published

2002-12-31

How to Cite

1.
Cortinas MN, Fernández M, Valeta MI, Uriarte M del R, Mogdasy MC. Genotype characterization of 80 strains of Mycobacterium in Uruguay. Rev. Méd. Urug. [Internet]. 2002 Dec. 31 [cited 2024 Sep. 16];18(3):230-8. Available from: https://revista.rmu.org.uy/index.php/rmu/article/view/965

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