rdf:type |
|
lifeskim:mentions |
|
pubmed:issue |
2
|
pubmed:dateCreated |
2002-5-14
|
pubmed:abstractText |
Nine clinical isolates of Enterobacteriaceae (six Escherichia coli and three Proteus mirabilis) isolated in three Parisian hospitals between 1989 and 2000 showed a particular extended-spectrum cephalosporin-resistance profile characterized by resistance to cefotaxime and aztreonam but not to ceftazidime. CTX-M-1, CTX-M-2, CTX-M-9, CTX-M-14 and two novel plasmid-mediated CTX-M beta-lactamases (CTX-M-20, and CTX-M-21) were identified by polymerase chain reaction and isoelectric focusing (pI>8) and were associated in eight cases with TEM-1 (pI=5.4) or TEM-2 (pI=5.6) beta-lactamases. We used internal ISEcp1 and IS26 forward primers and the CTX-M consensus reverse primer to characterize the CTX-M beta-lactamase promoter regions and showed their high degree of structure diversity. We found upstream of some bla(CTX-M) genes, a 266-bp sequence 100% identical to the sequence upstream of the Kluyvera ascorbata beta-lactamase gene, suggesting that this chromosomal enzyme is the progenitor of the CTX-M-2/5 cluster.
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pubmed:language |
eng
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pubmed:journal |
|
pubmed:citationSubset |
IM
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pubmed:chemical |
|
pubmed:status |
MEDLINE
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pubmed:month |
Apr
|
pubmed:issn |
0378-1097
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pubmed:author |
|
pubmed:issnType |
Print
|
pubmed:day |
9
|
pubmed:volume |
209
|
pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
|
pubmed:pagination |
161-8
|
pubmed:dateRevised |
2008-11-21
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pubmed:meshHeading |
pubmed-meshheading:12007800-Base Sequence,
pubmed-meshheading:12007800-Cephalosporin Resistance,
pubmed-meshheading:12007800-DNA Transposable Elements,
pubmed-meshheading:12007800-Escherichia coli,
pubmed-meshheading:12007800-Escherichia coli Proteins,
pubmed-meshheading:12007800-Genetic Variation,
pubmed-meshheading:12007800-Hospitals,
pubmed-meshheading:12007800-Humans,
pubmed-meshheading:12007800-Molecular Sequence Data,
pubmed-meshheading:12007800-Paris,
pubmed-meshheading:12007800-Plasmids,
pubmed-meshheading:12007800-Promoter Regions, Genetic,
pubmed-meshheading:12007800-Proteus mirabilis,
pubmed-meshheading:12007800-beta-Lactamases
|
pubmed:year |
2002
|
pubmed:articleTitle |
Diversity of CTX-M beta-lactamases and their promoter regions from Enterobacteriaceae isolated in three Parisian hospitals.
|
pubmed:affiliation |
Service de Bactériologie, Hôpital Tenon, U.F.R Saint-Antoine, 4 rue de la Chine, 75970 Paris Cedex 20, France.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
|