Divergence of affinities, serotypes and virulence factor between CTX-M Escherichia coli and non-CTX-M producers
نویسندگان
چکیده
منابع مشابه
Characterization of CTX-M-14 and CTX-M-15 producing Escherichia coli strains causing neonatal sepsis.
Neonatal sepsis is a disease affecting newborns ≤1 month of age with clinical symptoms and positive blood cultures. The number of Escherichia coli strains causing neonatal sepsis resistant to the antibiotics used in the treatment is increasing. In this study, two E. coli strains causing sepsis in neonates of mothers infected with an E. coli strain harboring extended spectrum beta-lactamases wer...
متن کاملCTX-M-1 and CTX-M-15-producing Escherichia coli in dog faeces from public gardens
BACKGROUND Extended-spectrum beta-lactamase (ESBL)-producing Escherichia coli are increasingly reported in dogs. The objective of this study was to provide data on the prevalence of ESBL-producing E. coli in dog faecal deposits in public gardens. RESULTS A total of 209 faecal deposits collected in nine public gardens in Copenhagen, Denmark were screened by selective enrichment followed by pla...
متن کاملCTX-M-123, a novel hybrid of the CTX-M-1 and CTX-M-9 Group β-lactamases recovered from Escherichia coli isolates in China.
The chimeric bla(CTX-M-123) gene was identified in two ceftazidime-resistant Escherichia coli isolates from animals in different Chinese provinces. Like other CTX-M-1/9 group hybrids (CTX-M-64 and CTX-M-132), the ends (amino acids 1 to 135 and 234 to 291) of CTX-M-123 match CTX-M-15 while the central part (122 to 241) matches CTX-M-14. bla(CTX-M-123) is carried on related, but not identical, ~9...
متن کاملCTX-M-137, a hybrid of CTX-M-14-like and CTX-M-15-like β-lactamases identified in an Escherichia coli clinical isolate.
OBJECTIVES To characterize a novel CTX-M chimera, CTX-M-137, from Escherichia coli clinical isolates in China. METHODS Isolates were collected from five hospitals between 22 February 2009 and 20 December 2011. Resistance genes were investigated by PCR. blaCTX-M-137 was cloned and purified for kinetic measurements. Conjugation experiments, S1-PFGE and Southern blotting were performed to study ...
متن کاملColonization of returning travelers with CTX-M-producing Escherichia coli.
BACKGROUND We previously identified foreign travel as a risk factor for acquiring infections due to CTX-M (active on cefotaxime first isolated in Munich) producing Escherichia coli. The objective of this study was to assess the prevalence of extended-spectrum β-lactamase (ESBL)-producing E coli among stool samples submitted from travelers as compared to non-travelers (a non-traveler had not bee...
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ژورنال
عنوان ژورنال: Poultry Science
سال: 2018
ISSN: 0032-5791
DOI: 10.3382/ps/pex376