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Keywords = Escherichia hermannii

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17 pages, 1375 KiB  
Article
Isolation and Characterization of Colistin-Resistant Enterobacteriaceae from Foods in Two Italian Regions in the South of Italy
by Rosa Fraccalvieri, Angelica Bianco, Laura Maria Difato, Loredana Capozzi, Laura Del Sambro, Stefano Castellana, Adelia Donatiello, Luigina Serrecchia, Lorenzo Pace, Donatella Farina, Domenico Galante, Marta Caruso, Maria Tempesta and Antonio Parisi
Microorganisms 2025, 13(1), 163; https://doi.org/10.3390/microorganisms13010163 - 14 Jan 2025
Cited by 2 | Viewed by 1162
Abstract
The emergence of colistin-resistant Enterobacteriaceae in food products is a growing concern due to the potential transfer of resistance to human pathogens. This study aimed to assess the prevalence of colistin-resistant Enterobacteriaceae in raw and ready-to-eat food samples collected from two regions of [...] Read more.
The emergence of colistin-resistant Enterobacteriaceae in food products is a growing concern due to the potential transfer of resistance to human pathogens. This study aimed to assess the prevalence of colistin-resistant Enterobacteriaceae in raw and ready-to-eat food samples collected from two regions of Italy (Apulia and Basilicata) and to evaluate their resistance phenotypes and genetic characteristics. A total of 1000 food samples were screened, with a prevalence of 4.4% of colistin-resistant Enterobacteriaceae. The majority of the isolates belonged to Enterobacter spp. (60%), followed by Moellerella wisconsensis, Atlantibacter hermannii, Klebsiella pneumoniae, and Escherichia coli, among others. Genomic sequencing and antimicrobial susceptibility testing revealed high levels of resistance to β-lactams, with most isolates exhibiting multidrug resistance (MDR). Notably, seven isolates harbored mcr genes (mcr-1, mcr-9, and mcr-10). Additionally, in four of them were predicted the IncHI2 plasmids, known to facilitate the spread of colistin resistance. Furthermore, 56 antimicrobial resistance genes were identified, suggesting the genetic mechanisms underlying resistance to several antibiotic classes. Virulence gene analysis showed that E. coli and other isolates carried genes linked to pathogenicity, increasing the potential risk to public health. This study emphasizes the role of food as a potential reservoir for colistin-resistant bacteria and the importance of monitoring the spread of AMR genes in foodborne pathogens. Full article
(This article belongs to the Special Issue Polymyxin Resistance in Gram-Negative Bacteria)
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9 pages, 623 KiB  
Review
Escherichia hermannii Infections in Humans: A Systematic Review
by Petros Ioannou
Trop. Med. Infect. Dis. 2019, 4(1), 17; https://doi.org/10.3390/tropicalmed4010017 - 21 Jan 2019
Cited by 17 | Viewed by 5880
Abstract
Eshcerichia hermannii is a member of the Enterobacteriaceae, first described in 1982 and reclassified as a distinct species in the Escherichia genus after identifying biochemical and genomic differences from E. coli. It is a rare cause of human infections and is supposed to [...] Read more.
Eshcerichia hermannii is a member of the Enterobacteriaceae, first described in 1982 and reclassified as a distinct species in the Escherichia genus after identifying biochemical and genomic differences from E. coli. It is a rare cause of human infections and is supposed to be a co-infector rather than an autonomous cause of infection. The aim of this systematic review was to record and evaluate all available evidence regarding human infections by E. hermannii. A systematic review of PubMed (through 21 December 2018) for studies providing epidemiological, clinical, and microbiological information, as well as treatment data and outcomes of E. hermannii infections was performed. A total of 16 studies, containing data of 17 patients, were eventually included in the analysis. The most common E. hermannii infections were bacteremias, urinary tract, and central nervous system infections. The complication rate, like the occurrence of sepsis, was high. Cephalosporins and aminoglycosides were the most common agents used for treatment. This systematic review describes bacterial infections by E. hermannii and provides information on the epidemiology, clinical presentation, antibiotic resistance, treatment, and outcomes associated with these infections. Full article
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