The DOI matches its Crossref record; 28 of the 28 references it cites were found in a registry or an index.
Community Emergence of Cefixime-Resistant Escherichia coli Belonging to ST12 with Chromosomal AmpC Hyperproduction
Open accessAbstract
Escherichia coli isolates that are resistant to cefixime and amoxicillin/clavulanic acid, but apparently susceptible to cefuroxime, with no ESBL identified, were initially detected in Madrid from urine samples in 2019. Throughout 2020 and 2021, all cases of community UTI by E. coli from six health areas in Madrid were studied. A representative sample of 23 cases was selected for further studies. The broth microdilution method and the agar diffusion method were performed to determine the antibiotic susceptibility. WGS was carried out for phylogeny, resistome and virulome analysis. Community consumption of third-generation oral cephalosporins in Madrid (2017–2021) was analyzed. A total of 582 (1.3%) E. coli isolates had the mentioned resistance profile. The mutation at position –32 (T > A) of the AmpC promoter was found in 21 isolates. No plasmid AmpC- or ESBL-encoding genes were detected. A cluster of 20 ST12 isolates was detected by cgMLST. A 6.2% increase in the consumption of third-generation oral cephalosporins, especially cefixime, was observed in Madrid. Chromosomal AmpC-hyperproducing ST12 E. coli isolates could be implicated in the increase in community UTI cases by cefixime-resistant isolates, which correlates with an increasing trend of cefixime consumption.
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“versus cefixime, a representative of the cephalosporin class not included in the EFSA panel, the strains resulted to be susceptible according to a set cut-off recently demonstrated [112].”
From Selection, Comparative Genomics, and Potential Probiotic Features of Escherichia coli 5C, a pks-Negative Strain Isolated from Healthy Infant Donor Feces (2026) · cites this paper as [112]
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Di Pierro, F., Sagheddu, V., Galletti, S., Casaroli, A., Labrini, E., Soldi, S., Cazzaniga, M., Bertuccioli, A., Matera, M., Cavecchia, I., et al. (2026) · Probiotics and Antimicrobial Proteins · doi:10.1007/s12602-025-10522-5 · Cited by 5
“Also, versus cefixime, a representative of the cephalosporin class not included in the EFSA panel, the strains resulted to be susceptible according to a set cut-off recently demonstrated [112].”
Recent Advances in Cefixime-Loaded Nanomaterials for Treating Bacterial Infections
Omrani, Z., Pourmadadi, M., Rahdar, A., & Ghotekar, S. K. (2025) · BioNanoScience · doi:10.1007/s12668-025-02087-y · Cited by 3
Walusansa, A., Elmi, A. S., Ssenku, J. E., Nansikombi, N., Kudamba, A., Okurut, S. A., Omar, A. M., Lunkuse, S., & Kafeero, H. M. (2026) · Scientific Reports · doi:10.1038/s41598-026-47699-w · Cited by 1
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Adami, D., Zarif, B. R., & Hosseini, F. (2026) · BioNanoScience · doi:10.1007/s12668-026-02425-8
Metadata
- Authors
- Zaragoza, G., Pérez-Vázquez, M., Villar-Gómara, L., González-Prieto, A., Oteo-Iglesias, J., & Alós, J.-I.
- Affiliations
- Hospital Universitario de Getafe (ES)
- Laboratorio de Resistencia a Antibióticos, Centro Nacional de Microbiología, Instituto de Salud Carlos III, 28222 Majadahonda, Spain
- Agencia Española de Medicamentos y Productos Sanitarios (ES)
- Hospital Universitario Infanta Sofía (ES)
- Corresponding author
- Alós, Juan-Ignacio
- Venue
- Antibiotics
- Publisher
- MDPI AG
- Published
- 2024-02-27
- Volume
- 13
- Issue
- 3
- Pages
- 218
- ISSN
- 2079-6382 (ISSN-L)
- PMC
- PMC10967553
- OpenAlex
- W4392198067
- Cited by
- 5
- References
- 28
- Citations by year
- 2026: 2 · 2025: 3
- FWCI
- 0.62
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- Antibiotics (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
- Funders
- CIBER—Consorcio Centro de Investigación Biomédica en Red (CB21/13/00095, CIBERINFEC, PMP22/00092)
- Instituto de Salud Carlos III, Ministerio de Ciencia e Innovación and Unión Europea–NextGenerationEU (CB21/13/00095, CIBERINFEC, PMP22/00092)
- Instituto de Salud Carlos III (CB21/13/00095, CIBERINFEC, PMP22/00092)
- Topics
- Health Sciences › Medicine › Microbiology (medical) › Antibiotic Resistance in Bacteria
- Life Sciences › Immunology and Microbiology › Microbiology › Escherichia coli research studies
- Health Sciences › Medicine › Urology › Urinary Tract Infections Management
- Keywords
- cefixime resistance, community-acquired urinary tract infections, third-generation cephalosporins, antibiotic use, antimicrobial resistance emergence, Madrid, resistome, virulome, phylogeny
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- CoChat. (2026). Citation check: Community Emergence of Cefixime-Resistant Escherichia coli Belonging to ST12 with Chromosomal AmpC Hyperproduction. https://app.cochat.ai/papers/10.3390/antibiotics13030218
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- Zaragoza, G., Pérez-Vázquez, M., Villar-Gómara, L., González-Prieto, A., Oteo-Iglesias, J., & Alós, J.-I. (2024). Community Emergence of Cefixime-Resistant Escherichia coli Belonging to ST12 with Chromosomal AmpC Hyperproduction. Antibiotics. https://doi.org/10.3390/antibiotics13030218