Mycobacterium avium restriction fragment length polymorphism-IS IS1245 and the simple double repetitive element polymerase chain reaction typing method to screen genetic diversity in Brazilian strains.

Autor: Sequeira PC; Departamento de Micobacterioses, Instituto Oswaldo Cruz-Fiocruz, 21045-900 Rio de Janeiro, RJ, Brazil., Fonseca Lde S, Silva MG, Saad MH
Jazyk: angličtina
Zdroj: Memorias do Instituto Oswaldo Cruz [Mem Inst Oswaldo Cruz] 2005 Nov; Vol. 100 (7), pp. 743-8. Date of Electronic Publication: 2006 Jan 09.
DOI: 10.1590/s0074-02762005000700012
Abstrakt: Simple double repetitive element polymerase chain reaction (MaDRE-PCR) and Pvu II-IS1245 restriction fragment length polymorphism (RFLP) typing methods were used to type 41 Mycobacterium avium isolates obtained from 14 AIDS inpatients and 10 environment and animals specimens identified among 53 mycobacteria isolated from 237 food, chicken, and pig. All environmental and animals strains showed orphan patterns by both methods. By MaDRE-PCR four patients, with multiple isolates, showed different patterns, suggesting polyclonal infection that was confirmed by RFLP in two of them. This first evaluation of MaDRE-PCR on Brazilian M. avium strains demonstrated that the method seems to be useful as simple and less expensive typing method for screening genetic diversity in M. avium strains on selected epidemiological studies, although with limitation on analysis identical patterns except for one band.
Databáze: MEDLINE