Linked Life Data

15183857

Source:http://linkedlifedata.com/resource/pubmed/id/15183857

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
2004-6-8
pubmed:abstractText
The increasing emergence of drug-resistant Mycobacterium tuberculosis poses significant threat to the treatment of tuberculosis. Conventional susceptibility testing for the front-line tuberculosis drug pyrazinamide (PZA) is difficult, because of the requirement for acid pH for the drug to show activity. Resistance to PZA in M. tuberculosis is caused by mutations in the pncA gene, and detection of pncA mutations can be an indicator of PZA resistance. In this study, we examined the feasibility of a microarray-based approach exploiting short overlapping oligonucleotides (sliding-frame array) to rapidly detect pncA mutations (substitutions, deletions, and insertions) in multiple strains of PZA-resistant M. tuberculosis. The genetic mapping of these mutations is necessary to link the gene sequence to the protein function defined by mutant phenotype. Microarray analysis was performed in a blind manner using 57 isolates of M. tuberculosis for which the sequence of the pncA gene was previously determined. Our results showed that all mutations could be unambiguously detected, suggesting that microarray can be a routine and valuable tool for rapid identification of drug-resistant M. tuberculosis isolates. We expect that mutation mapping with a sliding-frame microarray will accelerate the molecular analysis of drug-resistant M. tuberculosis bacteria and the microorganism populations.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
0732-8893
pubmed:author
pubmed:copyrightInfo
Copyright 2004 Elsevier Inc.
pubmed:issnType
Print
pubmed:volume
49
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
89-97
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
2004
pubmed:articleTitle
Accurate mapping of mutations of pyrazinamide-resistant Mycobacterium tuberculosis strains with a scanning-frame oligonucleotide microarray.
pubmed:affiliation
Department of Molecular Microbiology and Immunology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, USA.
pubmed:publicationType
Journal Article, Comparative Study, Research Support, U.S. Gov't, P.H.S.