Prevalence of carbapenem resistance and carbapenemase production among Enterobacteriaceae isolated from urine in the UK: results of the UK infection-Carbapenem Resistance Evaluation Surveillance Trial (iCREST-UK)
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Prevalence of carbapenem resistance and carbapenemase production among Enterobacteriaceae isolated from urine in the UK : results of the UK infection-Carbapenem Resistance Evaluation Surveillance Trial (iCREST-UK). / Woodford, Neil; Xu-McCrae, Li; Mushtaq, Shazad; Wu, Houdini Ho Tin; Ellington, Matthew J; Lancaster, Owen; Davies, Frances; Donaldson, Hugo; Rao, G Gopal; Verma, Anita; Wareham, David W; Ciesielczuk, Holly; Stone, Gregory G; Irani, Paurus M; Bracher, Simon; Hawkey, Peter M.
In: Journal of Antimicrobial Chemotherapy, 15.12.2017.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Prevalence of carbapenem resistance and carbapenemase production among Enterobacteriaceae isolated from urine in the UK
T2 - results of the UK infection-Carbapenem Resistance Evaluation Surveillance Trial (iCREST-UK)
AU - Woodford, Neil
AU - Xu-McCrae, Li
AU - Mushtaq, Shazad
AU - Wu, Houdini Ho Tin
AU - Ellington, Matthew J
AU - Lancaster, Owen
AU - Davies, Frances
AU - Donaldson, Hugo
AU - Rao, G Gopal
AU - Verma, Anita
AU - Wareham, David W
AU - Ciesielczuk, Holly
AU - Stone, Gregory G
AU - Irani, Paurus M
AU - Bracher, Simon
AU - Hawkey, Peter M
PY - 2017/12/15
Y1 - 2017/12/15
N2 - Objectives: Although carbapenem susceptibility testing has been recommended for all Enterobacteriaceae from clinical specimens, for practical reasons a carbapenem is not included in many primary antibiotic panels for urine specimens. The 'iCREST' study sought carbapenemase-producing Enterobacteriaceae (CPE) in routine urine specimens yielding Gram-negative growth in five diagnostic laboratories in the UK. We sought also to compare locally and centrally determined MICs of meropenem and ceftazidime/avibactam.Methods: Positive growth from up to 2000 urine specimens per laboratory was plated onto chromID® CARBA SMART agar. Suspected CPE colonies were tested locally by Etest for susceptibility to meropenem and ceftazidime/avibactam, and referred to central laboratories for PCR confirmation of CPE status and microbroth MIC determination.Results: Twenty-two suspected CPE were identified from 7504 urine specimens. Ten were confirmed by PCR to have NDM (5), IMP (2), KPC (2) or OXA-48-like (1) carbapenemases. Locally determined ceftazidime/avibactam MICs showed complete categorical agreement with those determined centrally by microbroth methodology. The seven ceftazidime/avibactam-resistant isolates (MICs ≥256 mg/L) had NDM or IMP metallo-carbapenemases.Conclusions: The frequency of confirmed CPE among Gram-negative urinary isolates was low, at 0.13% (10/7504), but CPE were found in urines at all five participating sites and the diversity of carbapenemase genes detected reflected the complex epidemiology of CPE in the UK. These data can inform local policies about the cost-effectiveness and clinical value of testing Gram-negative bacteria from urine specimens routinely against a carbapenem as part of patient management and/or infection prevention and control strategies.
AB - Objectives: Although carbapenem susceptibility testing has been recommended for all Enterobacteriaceae from clinical specimens, for practical reasons a carbapenem is not included in many primary antibiotic panels for urine specimens. The 'iCREST' study sought carbapenemase-producing Enterobacteriaceae (CPE) in routine urine specimens yielding Gram-negative growth in five diagnostic laboratories in the UK. We sought also to compare locally and centrally determined MICs of meropenem and ceftazidime/avibactam.Methods: Positive growth from up to 2000 urine specimens per laboratory was plated onto chromID® CARBA SMART agar. Suspected CPE colonies were tested locally by Etest for susceptibility to meropenem and ceftazidime/avibactam, and referred to central laboratories for PCR confirmation of CPE status and microbroth MIC determination.Results: Twenty-two suspected CPE were identified from 7504 urine specimens. Ten were confirmed by PCR to have NDM (5), IMP (2), KPC (2) or OXA-48-like (1) carbapenemases. Locally determined ceftazidime/avibactam MICs showed complete categorical agreement with those determined centrally by microbroth methodology. The seven ceftazidime/avibactam-resistant isolates (MICs ≥256 mg/L) had NDM or IMP metallo-carbapenemases.Conclusions: The frequency of confirmed CPE among Gram-negative urinary isolates was low, at 0.13% (10/7504), but CPE were found in urines at all five participating sites and the diversity of carbapenemase genes detected reflected the complex epidemiology of CPE in the UK. These data can inform local policies about the cost-effectiveness and clinical value of testing Gram-negative bacteria from urine specimens routinely against a carbapenem as part of patient management and/or infection prevention and control strategies.
KW - antibiotics
KW - Polymerase Chain Reaction
KW - carbapenem
U2 - 10.1093/jac/dkx471
DO - 10.1093/jac/dkx471
M3 - Article
C2 - 29253163
JO - Journal of Antimicrobial Chemotherapy
JF - Journal of Antimicrobial Chemotherapy
SN - 0305-7453
ER -