{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,17]],"date-time":"2026-06-17T16:58:51Z","timestamp":1781715531848,"version":"3.54.5"},"reference-count":42,"publisher":"SAGE Publications","issue":"1","license":[{"start":{"date-parts":[[2014,2,1]],"date-time":"2014-02-01T00:00:00Z","timestamp":1391212800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Microbial Drug Resistance"],"published-print":{"date-parts":[[2014,2]]},"abstract":"<jats:p>\n                    From January 1st 2011 through June 30th 2011, 116 nonreplicate, noncystic fibrosis-related\n                    <jats:italic toggle=\"yes\">Pseudomonas aeruginosa<\/jats:italic>\n                    isolates with reduced carbapenem susceptibility were collected from 12 out of 13 Danish departments of clinical microbiology. The presence of acquired \u03b2-lactamases was assessed with combination tablet-diffusion methodology and polymerase chain reaction. In addition, antimicrobial susceptibility testing, an efflux pump inhibitor assay, and pulsed-field gel electrophoresis (PFGE) were performed. Isolates producing acquired \u03b2-lactamases were further investigated by serotyping and multi locus sequence typing. Eight isolates produced the metallo-\u03b2-lactamase (MBL) VIM-2, and one isolate produced OXA-10 and VEB-1-like extended-spectrum beta-lactamase (ESBL). Phenotypic indications of derepressed AmpC and efflux pump were seen in 56 and 43 isolates, respectively. Overall, the results indicate that mutational factors related to permeability\u2014often combined with derepressed, chromosomal AmpC\u2014is the main factor behind carbapenem nonsusceptibility in Danish\n                    <jats:italic toggle=\"yes\">P. aeruginosa<\/jats:italic>\n                    isolates. The ESBL producer and all the VIM producers belonged to international clones. PFGE revealed that most of the isolates were unrelated, but clonal spread was seen; the 116 isolates distributed in 97 PFGE types, with the largest cluster consisting of 4 isolates (including three isolates from the same hospital with 100% similarity). Thirty-two isolates were pair-wise related, while the remaining isolates were clonally unrelated, as were all nine ESBL\/MBL producers.\n                  <\/jats:p>","DOI":"10.1089\/mdr.2013.0085","type":"journal-article","created":{"date-parts":[[2013,8,21]],"date-time":"2013-08-21T16:05:57Z","timestamp":1377101157000},"page":"22-29","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":12,"title":["Characterization of Carbapenem Nonsusceptible\n                    <i>Pseudomonas aeruginosa<\/i>\n                    in Denmark: A Nationwide, Prospective Study"],"prefix":"10.1177","volume":"20","author":[{"given":"Frank","family":"Hansen","sequence":"first","affiliation":[{"name":"Statens Serum Institut","place":["Denmark"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Helle Krogh","family":"Johansen","sequence":"additional","affiliation":[{"name":"Rigshospitalet","place":["Denmark"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Claus","family":"\u00d8stergaard","sequence":"additional","affiliation":[{"name":"Aalborg Sygehus","place":["Denmark"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Magnus","family":"Arpi","sequence":"additional","affiliation":[{"name":"Herlev Hospital","place":["Denmark"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dennis Schr\u00f8der","family":"Hansen","sequence":"additional","affiliation":[{"name":"Hiller\u00f8d Sygehus","place":["Denmark"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Pia","family":"Littauer","sequence":"additional","affiliation":[{"name":"Hvidovre Hospital","place":["Denmark"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Anette","family":"Holm","sequence":"additional","affiliation":[{"name":"Vejle Hospital","place":["Denmark"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ole","family":"Heltberg","sequence":"additional","affiliation":[{"name":"Slagelse Sygehus","place":["Denmark"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Helga","family":"Schumacher","sequence":"additional","affiliation":[{"name":"Regionshospitalet Herning","place":["Denmark"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kurt","family":"Fuursted","sequence":"additional","affiliation":[{"name":"Aarhus University Hospital","place":["Denmark"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mari-Ann Domar","family":"Lykke","sequence":"additional","affiliation":[{"name":"Sydvestjysk Sygehus Esbjerg","place":["Denmark"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Birgitte","family":"T\u00f8nning","sequence":"additional","affiliation":[{"name":"Regionshospitalet Viborg","place":["Denmark"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Anette M.","family":"Hammerum","sequence":"additional","affiliation":[{"name":"Statens Serum Institut","place":["Denmark"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ulrik Stenz","family":"Justesen","sequence":"additional","affiliation":[{"name":"Odense University Hospital","place":["Denmark"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2014,2]]},"reference":[{"key":"e_1_3_3_2_2","doi-asserted-by":"crossref","first-page":"1584","DOI":"10.1128\/AAC.01603-06","article-title":"Emergence and dissemination of BEL-1-producing Pseudomonas aeruginosa isolates in Belgium","volume":"51","author":"Bogaerts P.","year":"2007","unstructured":"Bogaerts P., , Bauraing C., , Deplano A., , and Glupczynski Y.. 2007. Emergence and dissemination of BEL-1-producing Pseudomonas aeruginosa isolates in Belgium. Antimicrob. Agents. Chemother., 51:1584\u20131585.","journal-title":"Antimicrob. Agents. Chemother."},{"key":"e_1_3_3_3_2","doi-asserted-by":"crossref","first-page":"1906","DOI":"10.1128\/AAC.01645-10","article-title":"Overexpression of AmpC and efflux pumps in Pseudomonas aeruginosa isolates from bloodstream infections: prevalence and impact on resistance in a Spanish multicenter study","volume":"55","author":"Cabot G.","year":"2011","unstructured":"Cabot G., , Ocampo-Sosa A.A., , Tubau F., , Macia M.D., , Rodr\u00edguez C., , Moya B., et al. 2011. Overexpression of AmpC and efflux pumps in Pseudomonas aeruginosa isolates from bloodstream infections: prevalence and impact on resistance in a Spanish multicenter study. Antimicrob. Agents. Chemother. 55:1906\u20131911.","journal-title":"Antimicrob. Agents. 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Microbiol."},{"key":"e_1_3_3_42_2","doi-asserted-by":"crossref","first-page":"E369","DOI":"10.1111\/j.1469-0691.2012.03969.x","article-title":"Metallo-\u03b2-lactamase-producing Pseudomonas aeruginosa in the Netherlands: the nationwide emergence of a single sequence type","volume":"18","author":"Van der Bij A.K.","year":"2012","unstructured":"Van der Bij A.K., , Van der Zwan D., , Peirano G., , Severin J.A., , Pitout J.D., , Van Westreenen M., , Goessens W.H., MBL-PA Surveillance Study Group. 2012. Metallo-\u03b2-lactamase-producing Pseudomonas aeruginosa in the Netherlands: the nationwide emergence of a single sequence type. Clin. Microbiol. Infect., 18: E369\u2013E372.","journal-title":"Clin. Microbiol. Infect."},{"key":"e_1_3_3_43_2","doi-asserted-by":"crossref","unstructured":"Vatcheva-Dobrevska R. Mulet X. Ivanov I. Zamorano L. Dobreva E. Velinov T. et al. 2013. Molecular epidemiology and multidrug resistance mechanisms of Pseudomonas aeruginosa isolates from Bulgarian hospitals. 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