AI Article Synopsis
- The study evaluated colistin resistance prevalence in K. pneumoniae strains, finding a 16.6% resistance rate while comparing alternative testing methods to the gold standard, broth microdilution (BMD).
- Testing methods like Sensititre™, CBDE, and ETEST® showed a 100% categorical agreement with BMD, while VITEK®2 had slightly lower reliability.
- No strains were found to carry mcr genes, indicating a need for ongoing global research and validation of testing methods due to insufficient colistin resistance data.
Article Abstract
Purpose: This study aimed to assess the prevalence of colistin resistance in the study group and compare alternative methods with the gold standard. It sought to evaluate the prevalence of plasmid-mediated colistin resistance genes.
Material And Methods: The colistin susceptibility of 151 K. pneumoniae strains was determined using Sensititre™, CBDE, ETEST®, and VITEK®2. Results were compared with BMD. The presence of the mcr gene was assessed using polymerase chain reaction.
Results: The colistin resistance rate was 16,6 %. The categorical agreement of Sensititre™, CBDE, and ETEST® was 100 %. VITEK®2 had a CA of 98 %, a major error of 0.79 %, and a very major error of 8 %. Essential agreement for Sensititre™, ETEST®, and VITEK®2 was 92.7 %, 52.3 %, and 78.1 %, respectively. There were no mcr genes in any strains.
Conclusions: Due to the difficulty of applying BMD, colistin resistance data are insufficient globally. Continuous epidemiological studies and validation of alternative methods are needed.
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| http://dx.doi.org/10.1016/j.diagmicrobio.2024.116584 | DOI Listing |
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