Document Detail


Molecular mechanism of rifampicin and isoniazid resistance in Mycobacterium tuberculosis from Bangladesh.
MedLine Citation:
PMID:  22863574     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Despite having 100% coverage of directly observed treatment short-course, multi drug-resistant (MDR) tuberculosis (TB) is still increasing in Bangladesh. Early detection of MDR-TB by rapid molecular test and early initiation of treatment will effectively stop this trend. To develop rapid diagnostic tools, molecular characterization of genes conferring Mycobacterium tuberculosis resistance to rifampicin (RIF) and isoniazid (INH) will be required. Hence, this study elucidated the molecular mechanism RIF and INH resistance in 218 MDR strains from hospitalized (n = 161) and non-hospitalized (n = 57) TB patients in Bangladesh. Mutations in rpoB gene were detected in 207 (95.0%) with majority at codon 531 (52.3%). Mutations in katG or inhA or both were detected in 206 (94.5%) with majority at codon 315 of katG (83.9%). It was noteworthy that a novel C to T mutation at position -34 and G to A mutations at position -47 in inhA regulatory region were found, respectively, in combination with mutation at codon 315 of katG. This is the first comprehensive molecular analysis of rpoB and katG genes and inhA regulatory regions of MDR isolates from Bangladesh. This study provides basic data for the construction of low cost tailor-made molecular system for rapid diagnosis of MDR-TB in Bangladesh.
Authors:
Zeaur Rahim; Chie Nakajima; Rubhana Raqib; Khalequ Zaman; Hubert P Endtz; Adri G M van der Zanden; Yasuhiko Suzuki
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-8-2
Journal Detail:
Title:  Tuberculosis (Edinburgh, Scotland)     Volume:  -     ISSN:  1873-281X     ISO Abbreviation:  Tuberculosis (Edinb)     Publication Date:  2012 Aug 
Date Detail:
Created Date:  2012-8-6     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100971555     Medline TA:  Tuberculosis (Edinb)     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012 Elsevier Ltd. All rights reserved.
Affiliation:
International Centre for Diarrheal Disease Research, Bangladesh (ICDDR,B), Bangladesh.
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