Identification of cords by Mycobacterium kansassi and its implications in clinical microbiology

• Autores: Rojas Jaimes, Jesús, Giraldo Chávez, Jorge, Huyhua Flores, Yudit, Caceres Nakiche, Tatiana
• Formato: artículo
• Fecha de Publicación: 2023
• Institución: Universidad Peruana Cayetano Heredia
• Repositorio: Revistas - Universidad Peruana Cayetano Heredia
• Lenguaje: español
• OAI Identifier: oai:revistas.upch.edu.pe:article/4406
• Enlace del recurso: https://revistas.upch.edu.pe/index.php/RMH/article/view/4406
• Nivel de acceso: acceso abierto
• Materia: Tuberculosis; Mycobacterium; bacteria; enfermedad; virulencia; Mycobacterium kansasii; disease; virulence

Objectives: To determine if cord formation occurs in microcolonies of M. kansassi. Methods: Four species of highly prevalent pathogenic mycobacteria were seeded in the solid medium 7H11; Mycobacterium kansassi, Mycobacterium abscessus, Mycobacterium tuberculosis y Mycobacterium neonarum and observed for 21 days performing the Ziehl- Neelsen stain. Inverted light microscopy was used to detect cord formation. Results: All species produced cords, Mycobacterium kansassi, Mycobacterium abscessus, Mycobacterium tuberculosis y Mycobacterium neonarum at earlier stages of their growth detected by Ziehl-Neelsen. Conclusions: M kansasii is able to develop cords at microscopic levels indicating that this property is not distinctive of M tuberculosis as was originally thought.