Molecular characterization and antimicrobial resistance of Vibrio cholerae in Perú, 1991 - 2019

Ibarra-Trujillo J.; Alvarado D.; Gavilán R. · Anales de la Facultad de Medicina (2024) · DOI: 10.15381/anales.v85i2.28433

Resumen

Introduction. The integrons present in Vibrio cholerae are of interest in public health due to their relationship with multiresistance to antimicrobials. Objetive. Perform a molecular characterization, establish the presence of integrons and evaluate the antimicrobial resistance of Vibrio cholerae strains of clinical and environmental origin isolated in Peru during the years 1991 to 2019. Methods. 34 strains of Vibrio cholerae of clinical and environmental origin isolated during the years 1991 - 2019 were evaluated. All strains were reactivated, then grown in TCBS and in differential media for their taxonomic identification. An antibiogram was performed on all strains according to the disk diffusion method using 16 antimicrobials of clinical use. The genomic DNA was extracted, then the molecular characterization was carried out by PCR and subsequently the amplified products of the integrases were sequenced. Results. All strains evaluated showed 100% sensitivity (n=34) for FEP, CTX, CAZ, CIP and CN. The antimicrobials that exhibited the greatest resistance were AMPR [26.5% (n=9)] and FZR [23.5% (n=8)]. In the present study, 8 antibiotics were established. All strains presented the intl4 gene, except those of environmental origin. All type IV integrases had high homology. Conclusion. Vibrio cholerae presents an increase in antimicrobial resistance. Serogroup O1 had the presence of class IV integrase, as well as high homology.

Instituciones: Universidad Nacional Mayor de San Marcos; Universidad Privada San Juan Bautista