rdf:type |
|
lifeskim:mentions |
|
pubmed:issue |
5
|
pubmed:dateCreated |
1993-8-23
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pubmed:abstractText |
A TEM-1 derived variant beta-lactamase with increased resistance to beta-lactamase inhibitors was selected in vitro. The variant beta-lactamase was obtained from the parent strain Escherichia coli J62-2 containing resistance plasmid R1 which encodes the TEM-1 beta-lactamase. The variants were obtained by repeated subculture of E. coli J62-2 (R1) for five days in the presence of sub-inhibitory concentrations of amoxycillin plus clavulanic acid. Comparison of this variant beta-lactamase with a clinically isolated TEM derived beta-lactamase, with increased resistance to beta-lactamase inhibitors, suggests that they are the same enzyme. Both beta-lactamases have the same pI at 5.25 and have similar ID50 values for the beta-lactamase inhibitors clavulanic acid, sulbactam and tazobactam.
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pubmed:grant |
|
pubmed:language |
eng
|
pubmed:journal |
|
pubmed:citationSubset |
IM
|
pubmed:chemical |
|
pubmed:status |
MEDLINE
|
pubmed:month |
May
|
pubmed:issn |
0305-7453
|
pubmed:author |
|
pubmed:issnType |
Print
|
pubmed:volume |
31
|
pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
|
pubmed:pagination |
655-64
|
pubmed:dateRevised |
2009-9-29
|
pubmed:meshHeading |
pubmed-meshheading:8392995-Amoxicillin,
pubmed-meshheading:8392995-Clavulanic Acid,
pubmed-meshheading:8392995-Clavulanic Acids,
pubmed-meshheading:8392995-Conjugation, Genetic,
pubmed-meshheading:8392995-Drug Resistance, Microbial,
pubmed-meshheading:8392995-Escherichia coli,
pubmed-meshheading:8392995-Isoelectric Focusing,
pubmed-meshheading:8392995-Microbial Sensitivity Tests,
pubmed-meshheading:8392995-Mutation,
pubmed-meshheading:8392995-Penicillanic Acid,
pubmed-meshheading:8392995-Plasmids,
pubmed-meshheading:8392995-Restriction Mapping,
pubmed-meshheading:8392995-Sulbactam,
pubmed-meshheading:8392995-beta-Lactamases
|
pubmed:year |
1993
|
pubmed:articleTitle |
Selection of variants of the TEM-1 beta-lactamase, encoded by a plasmid of clinical origin, with increased resistance to beta-lactamase inhibitors.
|
pubmed:affiliation |
Department of Medical Microbiology, Medical School, University of Edinburgh, UK.
|
pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
|