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Updated: Apr 1, 2026
Author Spotlight: A Comprehensive Protocol for Acinetobacter Biofilm Quantification, Assessment, and Visualization
Published on: August 4, 2023
Extending the reservoir of bla IMP-5: the emerging pathogen Acinetobacter bereziniae
Filipa Grosso1, Liliana Silva1,2, Clara Sousa3
1UCIBIO-REQUIMTE, Laboratório de Microbiologia, Faculdade de Farmácia, Universidade do Porto, Rua Jorge Viterbo Ferreira 228, 4050-313 Porto, Portugal.
Aim:
Acinetobacter bereziniae clinical relevance is starting to be recognized; however, very few descriptions of its carbapenem resistance currently exist. Here we characterize two carbapenem-resistant A. bereziniae isolates.
Materials & Methods:
Isolates were obtained from environmental and clinical samples. Carbapenemases were searched by phenotypic, biochemical and PCR assays. Clonality was studied by ApaI-PFGE and genetic location for carbapenemase genes were assessed by I-CeuI and S1 hybridizations.
Results:
Isolates were not clonally related but both produced the 'exclusively Portuguese' IMP-5, with the clinical isolate also producing an OXA-58. The carbapenemase genes were plasmid located.
Conclusion:
Our results emphasize the role of non-baumannii Acinetobacter species as important reservoirs of clinically relevant resistance genes that could also contribute to their emergence as nosocomial pathogens.
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