Molecular diversity of Mycobacterium tuberculosis isolates from patients with pulmonary tuberculosis in Sri Lanka.

Autor: Rajapaksa US; Department of Microbiology, Faculty of Medicine, University of Colombo, P.O. Box 271, Kynsey Road, Colombo 08, Sri Lanka. ushanir@yahoo.com, Victor TC, Perera AJ, Warren RM, Senevirathne SM
Jazyk: angličtina
Zdroj: Transactions of the Royal Society of Tropical Medicine and Hygiene [Trans R Soc Trop Med Hyg] 2008 Oct; Vol. 102 (10), pp. 997-1002. Date of Electronic Publication: 2008 May 29.
DOI: 10.1016/j.trstmh.2008.04.025
Abstrakt: The strain diversity of 100 Mycobacterium tuberculosis isolates collected over a period of 18 months from tuberculosis (TB) cases in Sri Lanka was studied by spoligotyping. When compared to the international spoligotyping database, 43 spoligotype patterns were identified, of which 20 were previously described. The majority of isolates (72.45%) were clustered into major genetic group 1, and the most common spoligotype pattern belonged to the Beijing (ST1) strain family. All the Beijing strain isolates belonged to more recently evolved sublineages of M. tuberculosis. The characterization of Sri Lankan M. tuberculosis isolates by spoligotyping shows a heterogeneous pattern. The physical separation from the main Indian peninsula may be responsible for the different patterns observed between the two countries. An in-depth field study is needed to understand the spread and the true epidemiology of this infection.
Databáze: MEDLINE