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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1997-9-18
pubmed:abstractText
The antimicrobial resistance patterns and plasmid profiles of Salmonella typhi isolates from sporadic cases (n = 33) and an outbreak (n = 48) were compared. Of 28 sporadic drug-resistant isolates, 24 (85.7%) were multiply resistant. The predominant antibiotic resistance pattern was TeCmSmSxTAp, which was also the most common pattern of the outbreak isolates. 13 drug-resistant strains isolated before the outbreak (46.4%) were able to transfer the whole resistance pattern or part of it to Escherichia coli K 12 by conjugation. Although 20 of the sporadic strains contained plasmid DNA, transferable R plasmids were only detected in 13 (65%) of them. Among the outbreak strains, the rate of R plasmid transfer was 92.3%, with only the TeCmSmSxTAp pattern transferred. Plasmid profiling and Hind III endonuclease digestion of plasmid DNA identified a 91.2 megadaltons (Mda) plasmid that was recovered from most of the outbreak isolates and from 4 strains collected before the outbreak. This plasmid coded for TeCmSmSxtAp and transferred the pattern of resistance in toto. The results indicate multidrug-resistant S. typhi as a potential cause of infection in the region.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:issn
0036-5548
pubmed:author
pubmed:issnType
Print
pubmed:volume
29
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
265-9
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1997
pubmed:articleTitle
Antimicrobial resistance pattern and plasmid profile of Salmonella typhi isolated from an outbreak in Tehran province.
pubmed:affiliation
Molecular Microbiology Unit, Pasteur Institute of Iran, Tehran, Islamic Republic of Iran.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't