Emerging resistance of van genotype in enterococci: A potential menace for therapeutic failure.

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Emerging resistance of van genotype in enterococci: A potential menace for therapeutic failure.

Pak J Med Sci. 2019 Nov-Dec;35(6):1659-1663

Authors: Ejaz H

Abstract
Objectives: Emerging cases of vancomycin-resistant enterococci (VRE) are detrimental for the patients. The current study aimed to ascertain the occurrence of VRE, their antibiogram and the van genotype responsible for vancomycin resistance.
Methods: A total number of 2,958 clinical specimens were processed at Microbiology Department of the Alrazi Health Care, Lahore during the one year (2016-2017) using microbiological culture media, biochemical and serology. Antibiogram of enterococcal strains was performed using disc diffusion and E-test. ATCC Enterococcus faecalis 29212 was used as a quality control strain. The detection of van genotypes was accomplished by multiplex PCR assay.
Results: Out of the 147 enterococci, 139 (94.6%) were E. faecalis, and 8 (5.4%) were E. faecium. Statistically significant associations of urine (p < 0.001), pus (p < 0.001) and wound swabs (p = 0.001) were observed with E. faecalis. A significant correlation of enterococcal infections (p = 0.05) was seen with female patients. Four (2.9%) strains of E. faecalis found to be VRE with vanB (75%) and vanA (25%) genotypes.
Conclusion: The emerging strains of VRE (vanB and vanA genotype) in the current study are a potential menace for therapeutic failure, which left the physicians with only linezolid as a therapeutic option.

PMID: 31777511 [PubMed]