Nosocomial spread of cephem-resistant Escherichia coli strains carrying multiple Toho-1-like beta-lactamase genes

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Published inAntimicrobial Agents and Chemotherapy Vol. 41; no. 12; pp. 2606 - 2611
Main Authors YAGI, T, KUROKAWA, H, ARAKAWA, Y, SENDA, K, ICHIYAMA, S, ITO, H, OHSUKA, S, SHIBAYAMA, K, SHIMOKATA, K, KATO, N, OHTA, M
Format Journal Article
LanguageEnglish
Published Washington, DC American Society for Microbiology 01.12.1997
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Abstract Services AAC Citing Articles Google Scholar PubMed Related Content Social Bookmarking CiteULike Delicious Digg Facebook Google+ Mendeley Reddit StumbleUpon Twitter current issue AAC About AAC Subscribers Authors Reviewers Advertisers Inquiries from the Press Permissions & Commercial Reprints ASM Journals Public Access Policy AAC RSS Feeds 1752 N Street N.W. • Washington DC 20036 202.737.3600 • 202.942.9355 fax • journals@asmusa.org Print ISSN: 0066-4804 Online ISSN: 1098-6596 Copyright © 2014 by the American Society for Microbiology.   For an alternate route to AAC .asm.org, visit: AAC       
AbstractList Escherichia coli HKY56, which demonstrated resistance to various beta-lactams except carbapenems, was isolated from the throat swab of an inpatient in 1994. Conjugal transfer of cephem resistance from HKY56 to E. coli CSH2 was not successful. Three cefotaxime-resistant E. coli clones harboring plasmid pMRE001, pMRE002, or pMRE003, each of which carried a 3.4-, 5.8-, or 6.2-kb EcoRI fragment insert, respectively, were obtained from HKY56. Although restriction analysis suggested their different origins, these clones showed similar profiles of resistance to various beta-lactams. The sequence of 10 amino acid residues at the N terminus of beta-lactamase purified from E. coli HB101(pMRE001) was identical to that of Toho-1. This Toho-1-like beta-lactamase-1 (TLB-1) was able to hydrolyze cefoperazone and cefotaxime efficiently, but it failed to hydrolyze cephamycins. A Toho-1-specific DNA probe was hybridized with three distinct EcoRI fragments derived from the chromosomal DNA of strain HKY56, and these fragments corresponded to DNA inserts carried by pMRE001, pMRE002, and pMRE003, respectively. PCR and Southern hybridization analysis suggested that all six cephem-resistant E. coli strains, strains HKY273, HKY285, HKY288, HKY305, HKY316, and HKY335, which were isolated in 1996 at the same hospital where strain HKY56 had been isolated, also possessed multiple Toho-1-like beta-lactamase (TLB) genes, and the hybridization patterns obtained with the Toho-1-specific probe were quite similar among these six isolates. The DNA fingerprinting patterns observed by pulsed-field gel electrophoresis revealed that among the E. coli isolates tested, all isolates except HKY56 possessed a similar genetic background. These findings suggested that E. coli strains that carry chromosomally multiplied TLB genes may have been proliferating and transmitted among patients in the same hospital.
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Author S Ichiyama
K Shimokata
H Kurokawa
N Kato
M Ohta
T Yagi
S Ohsuka
H Ito
K Senda
K Shibayama
Y Arakawa
AuthorAffiliation Department of Bacteriology, Nagoya University School of Medicine, Japan
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Issue 12
Keywords Molecular hybridization
Cefoperazone
Cefotaxime
Enzyme
Escherichia coli
β-Lactams
β-Lactamase
In vitro
Genetic transfer
Cephalosporin derivatives
Microorganism resistance
Microorganism culture
Bacteria
Hydrolases
Molecular cloning
Aminoacid sequence
Enterobacteriaceae
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PublicationTitle Antimicrobial Agents and Chemotherapy
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Snippet Services AAC Citing Articles Google Scholar PubMed Related Content Social Bookmarking CiteULike Delicious Digg Facebook Google+ Mendeley Reddit StumbleUpon...
Escherichia coli HKY56, which demonstrated resistance to various beta-lactams except carbapenems, was isolated from the throat swab of an inpatient in 1994....
Escherichia coli HKY56, which demonstrated resistance to various beta -lactams except carbapenems, was isolated from the throat swab of an inpatient in 1994....
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SubjectTerms Antibiotics. Antiinfectious agents. Antiparasitic agents
Bacteriology
beta-Lactam Resistance
beta-Lactam Resistance - genetics
beta-Lactamases
beta-Lactamases - genetics
beta-Lactamases - isolation & purification
Biological and medical sciences
Carbapenems
Carbapenems - pharmacology
Cloning, Molecular
Conjugation, Genetic - genetics
Cross Infection
Cross Infection - genetics
Cross Infection - microbiology
Escherichia coli
Escherichia coli - drug effects
Escherichia coli - genetics
Fundamental and applied biological sciences. Psychology
Gene Transfer Techniques
General aspects
Isoelectric Focusing
Kinetics
Medical sciences
Metabolism. Enzymes
Microbiology
Pharmacology. Drug treatments
Research Support, Non-U.S. Gov't
Title Nosocomial spread of cephem-resistant Escherichia coli strains carrying multiple Toho-1-like beta-lactamase genes
URI http://aac.asm.org/content/41/12/2606.abstract
https://www.ncbi.nlm.nih.gov/pubmed/9420027
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