We found a carbapenem-resistant Enterobacter clinical strain which was susceptible to cefotaxime and ceftazidime. This unusual susceptibility profile promoted the investigation. This strain had bla, a rare carbapenemase-encoding gene, on a 93,864-bp plasmid containing two replicons of IncFII(pECLA) and IncFIA(HI1). FRI-11, FRI-2, FRI-3, FRI-4, FRI-6, FRI-7, and FRI-9 belong to the same group of FRI β-lactamases based on the amino acid sequence similarity and their encoding genes are carried by plasmids containing an IncFII(pECLA) replicon. Awareness should be raised towards FRI carbapenemases that are plasmid-encoded and confer an unusual carbapenem-resistant but 3rd-generation-cephalosporin-susceptible resistance profile.
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http://dx.doi.org/10.1007/s10096-023-04565-1 | DOI Listing |
BMC Microbiol
January 2025
Department of Laboratory Medicine, the Second Affiliated Hospital, Chongqing Medical University, Chongqing, 400010, P.R. China.
Background: Enterobacter cloacae is increasingly prevalent and resistant to multiple antibiotics, making it a significant pathogen in healthcare settings with high mortality rates. However, its pathogenic mechanisms are not fully understood.
Results: In this study, we explored the role of nagZ in regulating the virulence of E.
Blood
December 2024
Central South University, Changsha, China.
Multiple myeloma (MM)-induced bone disease affects not only patients' quality of life but also their overall survival. Our previous work demonstrated that the gut microbiome plays a crucial role in MM progression and drug resistance. However, the role of altered gut microbiota in MM bone disease remains unclear.
View Article and Find Full Text PDFBackground: Metallo-beta lactamase resistance is one of the carbapenem resistances that worsen the world nowadays. A new variant of carbapenem-resistant has only limited reports from Africa including Ethiopia. This study aimed to determine Metallo -ß- lactamase resistance Gram-negative bacteria in Hawassa University Comprehensive Specialized Hospital January-June 2023.
View Article and Find Full Text PDFMicroorganisms
November 2024
Department of Microbiology, Faculty of Medicine, "Grigore T. Popa" University of Medicine and Pharmacy, 16 Universitatii Street, 700115 Iași, Romania.
Colistin resistance poses a significant clinical challenge, particularly in Gram-negative bacteria. This study investigates the occurrence of plasmid-mediated colistin resistance among isolates (, , and spp.) and non-fermentative rods ( and ).
View Article and Find Full Text PDFAntibiotics (Basel)
December 2024
Dipartimento di Scienze Biotecnologiche di Base, Cliniche Intensivologiche e Perioperatorie, Università Cattolica del Sacro Cuore, 00168 Rome, Italy.
Metallo-β-lactamases (MBLs) in and other Gram-negative organisms pose significant public health threats due to their association with multidrug resistance (MDR). Although aztreonam (AZT) can target MBL-producing organisms, its efficacy is compromised in organisms expressing additional β-lactamases that inactivate it. Combining AZT with the β-lactamase inhibitor avibactam (AVI) may restore its activity against MBL-producing isolates.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!