{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,19]],"date-time":"2026-08-19T17:51:30Z","timestamp":1787161890961,"version":"build-2736575974"},"reference-count":52,"publisher":"MDPI AG","issue":"23","license":[{"start":{"date-parts":[[2024,11,21]],"date-time":"2024-11-21T00:00:00Z","timestamp":1732147200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"University of Milan, Italy","award":["LINEA2_SLAUZ_2019_AA"],"award-info":[{"award-number":["LINEA2_SLAUZ_2019_AA"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Animals"],"abstract":"<jats:p>MDR bacteria are an emerging global threat to public health, and the role of dogs in the rise of antimicrobial resistance is under investigation. This study investigated the fecal shedding of extended-spectrum \u03b2-lactamase (ESBL)-, AmpC- and carbapenemase (CP)-producing Escherichia coli and associated risk factors in dogs admitted to the Veterinary Teaching Hospital of Lodi, University of Milan, or other veterinary clinics and kennels in Northen Italy. Feces collected in 2020\u20132022 were microbiologically and molecularly analyzed. ESBL-\/AmpC-\/CP-producing E. coli was detected in 14\/100 (14%) dogs. Eleven (11%), five (5%) and one (1%) dogs carried ESBL-, AmpC- and CP-producing E. coli phenotypes, respectively, supported by the PCR detection of blaCTX-M and\/or blaTEM in ESBL-producing E. coli; blaCMY-2 and the presence of putative low-level AmpC production in AmpC-producing E. coli; and blaOXA-48 in CP-producing E. coli. Different combinations of resistance genes and genetic features were observed. Multidrug resistance was observed in 13\/14 (92.9%) E. coli isolates. Binary logistic regression analysis showed that ESBL-\/AmpC-\/CP-producing E. coli fecal shedding tended to be associated with antibiotic treatment (p = 0.058; OR = 3.87). The detection of ESBL-\/AmpC-producing E. coli, along with the presence of a carbapenemase-resistant E. coli isolate from domestic dogs, although still limited, emphasizes the need for antimicrobial stewardship and specific surveillance programs, particularly for CP-producing bacteria in companion animals.<\/jats:p>","DOI":"10.3390\/ani14233359","type":"journal-article","created":{"date-parts":[[2024,11,22]],"date-time":"2024-11-22T04:21:36Z","timestamp":1732249296000},"page":"3359","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Fecal Carriage and Risk Factors Associated with Extended-Spectrum \u03b2-Lactamase-\/AmpC-\/Carbapenemase-Producing Escherichia coli in Dogs from Italy"],"prefix":"10.3390","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-8953-1320","authenticated-orcid":false,"given":"Alessia","family":"Facchin","sequence":"first","affiliation":[{"name":"Department of Veterinary Medicine and Animal Sciences, University of Milan, Via dell\u2019Universit\u00e0 6, 26900 Lodi, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2901-4604","authenticated-orcid":false,"given":"Gabriele","family":"Ratti","sequence":"additional","affiliation":[{"name":"Department of Veterinary Medicine and Animal Sciences, University of Milan, Via dell\u2019Universit\u00e0 6, 26900 Lodi, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8849-2051","authenticated-orcid":false,"given":"Joel","family":"Filipe","sequence":"additional","affiliation":[{"name":"Department of Veterinary Medicine and Animal Sciences, University of Milan, Via dell\u2019Universit\u00e0 6, 26900 Lodi, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2855-2651","authenticated-orcid":false,"given":"Martina","family":"Penati","sequence":"additional","affiliation":[{"name":"Department of Veterinary Medicine and Animal Sciences, University of Milan, Via dell\u2019Universit\u00e0 6, 26900 Lodi, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4293-0719","authenticated-orcid":false,"given":"Alessia L.","family":"Gazzonis","sequence":"additional","affiliation":[{"name":"Department of Veterinary Medicine and Animal Sciences, University of Milan, Via dell\u2019Universit\u00e0 6, 26900 Lodi, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Greta","family":"Masiero","sequence":"additional","affiliation":[{"name":"Department of Veterinary Medicine and Animal Sciences, University of Milan, Via dell\u2019Universit\u00e0 6, 26900 Lodi, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8542-9476","authenticated-orcid":false,"given":"Paola","family":"Dall\u2019Ara","sequence":"additional","affiliation":[{"name":"Department of Veterinary Medicine and Animal Sciences, University of Milan, Via dell\u2019Universit\u00e0 6, 26900 Lodi, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4693-6395","authenticated-orcid":false,"given":"Giovanni L.","family":"Alborali","sequence":"additional","affiliation":[{"name":"Istituto Zooprofilattico Sperimentale della Lombardia e dell\u2019Emilia Romagna \u201cBruno Ubertini\u201d, Via Bianchi 7\/9, 25124 Brescia, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2111-108X","authenticated-orcid":false,"given":"Stefania","family":"Lauzi","sequence":"additional","affiliation":[{"name":"Department of Veterinary Medicine and Animal Sciences, University of Milan, Via dell\u2019Universit\u00e0 6, 26900 Lodi, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2024,11,21]]},"reference":[{"key":"ref_1","unstructured":"(2024, July 22). 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