ArticleThe Indian journal of medical research2017
Molecular & genetic characteristics of
Article in The Indian journal of medical research, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Impact of pathobiological diversity of Mycobacterium tuberculosis on clinical features and lethal outcome of tuberculosis.BMC microbiology · 2022Article
- Introducing the Best Six Loci in Mycobacterial Interspersed Repetitive Unit-Variable-Number Tandem Repeat (MIRU-VNTR) Typing forReports of biochemistry & molecular biology · 2019Article
- Molecular epidemiology of tuberculosis: Opportunities & challenges in disease control.The Indian journal of medical research · 2017Article
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7 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
BACKGROUND &
objectivesA complicated epidemiological situation characterized by significantly high tuberculosis (TB) morbidity is observed in West Siberia. This study was aimed to investigate the genetic characteristics of Mycobacterium tuberculosis circulating in the southern part of West Siberia (in the Omsk region).
methodsFrom March 2013 to January 2015, 100 isolates of M. tuberculosis were obtained from patients with pulmonary TB living in the Omsk region. Drug susceptibility testing was performed on Lowenstein-Jensen medium (absolute concentration method). Genetic typing of isolates was carried out by variable number tandem repeats of mycobacterial interspersed repetitive units (MIRU-VNTR) typing and polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) analysis. The genetic types and characteristics of cluster strains were determined using 15 MIRU-VNTR loci.
resultsThirty six VNTR types were found. Twenty six (26.0%) isolates had a unique profile, and the remaining 74 were grouped in 10 clusters containing from 2 to 23 isolates. The Beijing genotype was found in 72 isolates, 61 (85.0%) of which were part of five clusters that included two large clusters containing 23 isolates. Other genetic families, such as Latin-American Mediterranean (LAM, 11.0%), S family (2.0%) and Haarlem (4.0%), were also detected. The genetic family of 11 isolates could not be determined. Six different VNTR profiles were found in these non-classified isolates. Only 16 per cent of isolates were sensitive to anti-TB drugs. The katG315 (94.8%) and rpoB531 (92.2%) mutations were identified in 77 multidrug-resistant M. tuberculosis isolates. INTERPRETATION &
conclusionsThis study showed that the M. tuberculosis population in the Omsk region was heterogeneous. The Beijing genotype predominated and was actively spreading. The findings obtained point to the need for the implementation of more effective preventive measures to stop the spread of drug-resistant M. tuberculosis strains.
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