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Inicio Enfermedades Infecciosas y Microbiología Clínica (English Edition) Antibiotic susceptibility and genotypic characterization of Neisseria gonorrhoea...
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Vol. 42. Issue 2.
Pages 69-73 (February 2024)
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Vol. 42. Issue 2.
Pages 69-73 (February 2024)
Original article
Antibiotic susceptibility and genotypic characterization of Neisseria gonorrhoeae isolates in the Comunidad Valenciana (Spain): GONOvig project
Susceptibilidad antibiótica y caracterización genotípica de aislados de Neisseria gonorrhoeae circulantes en la Comunidad Valenciana (España): proyecto GONOvig
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Aleix Borja Fabregat Bolufera,
Corresponding author
aleixborja1987@gmail.com

Corresponding author.
, Felipe Bueno Ferrandob, David Navarro Ortegab, Javier Colomina Rodríguezb
a Hospital Universitario de Bellvitge, Barcelona, Spain
b Hospital Clínico Universitario de Valencia, Valencia, Spain
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Tables (3)
Table 1. Percentages of susceptibility to various antibiotics in Neisseria gonorrhoeae isolates: comparison according to CLSI and EUCAST criteria.
Table 2. Main sequence types detected and constituent alleles (porB and tbpB).
Table 3. The most prevalent genogroups and percentages of associated antibiotic resistance.
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Abstract
Introduction

The increase in sexually transmitted infections (STI) caused by Neisseria gonorrhoeae (NG) worldwide, together with the decrease in antibiotic susceptibility, forced us to understand the epidemiology of gonococcal infection.

Methods

The GONOvig project analyzed, comparatively following CLSI and EUCAST criteria, the antibiotic susceptibility of 227 NG strains collected in thirteen representative hospitals of the Valencia Community (CV) between 2013 and 2018. Additionally, molecular typing of 175 strains using the NG multi-antigen sequence typing technique (NG-MAST) was performed.

Results

High rates of resistance to tetracycline (38.2% by CLSI and 50.9% by EUCAST) and ciprofloxacin (49.1% CLSI and 54% EUCAST), and low percentages of resistance to spectinomycin (0%), cefixime (0.5% CLSI but 5.9% EUCAST), and ceftriaxone (1.5% CLSI and 2.4% EUCAST) were detected. Azithromycin resistance was 6% (both CLSI and EUCAST). Molecular analysis revealed the presence of 86 different sequence types (ST), highlighting ST2992 (7.4%), ST3378 (6.9%), ST2400 (4.6%) and ST13288 (6.9%), which was associated with resistance to cefixime (P=.031). The main genogroups (G) were G1407 (13.1%), G2992 (10.3%), G2400 (6.3%) and G387 (3.4%). G1407 and G2400 were associated with resistance to ciprofloxacin (P<.03).

Conclusion

Low resistance to ceftriaxone, a worrying resistance to azithromycin and a wide variety of circulating sequence types have been detected, some of which show correlation with certain resistance profiles.

Keywords:
Neisseria gonorrhoeae
Drug resistance
Bacterial
Molecular typing
Resumen
Introducción

El aumento de las infecciones de transmisión sexual producidas por Neisseria gonorrhoeae (NG) a nivel mundial, junto con la disminución de la susceptibilidad antibiótica, obliga a profundizar en la epidemiologia de la infección gonocócica.

Métodos

El proyecto GONOvig analizó, comparativamente siguiendo criterios CLSI y EUCAST, la sensibilidad antibiótica de 227 cepas de NG recogidas en trece hospitales representativos de la Comunidad Valencia (CV) entre los años 2013 y 2018. Adicionalmente, se pudo realizar la tipificación molecular de 175 cepas mediante la técnica NG multi-antigen sequence typing (NG-MAST).

Resultados

Se detectaron elevadas tasas de resistencia a tetraciclina (38,2% por CLSI y 50,9% por EUCAST) y ciprofloxacino (49,1% CLSI y 54% EUCAST), y bajos porcentajes de resistencia a espectinomicina (0%), cefixima (0,5% CLSI pero 5,9% EUCAST) y ceftriaxona (1,5% CLSI y 2,4% EUCAST). La resistencia a azitromicina fue del 6% (tanto CLSI como EUCAST). El análisis molecular reveló la presencia de 86 secuenciotipos (ST) distintos, destacando el ST2992 (7,4%), ST3378 (6,9%), ST2400 (4,6%) y ST13288 (6,9%) el cual presentaba asociación con resistencia a cefixima (P=,031). Los genogrupos (G) mayoritarios fueron el G1407 (13,1%), G2992 (10,3%), G2400 (6,3%) y G387 (3,4%); G1407 y G2400 mostraron asociación con resistencia a ciprofloxacino (P<,03).

Conclusión

Se ha detectado una baja resistencia a ceftriaxona, una preocupante resistencia a azitromicina y una gran variedad de secuenciotipos circulantes, algunos de los cuales presentan correlación con determinados perfiles de resistencia.

Palabras clave:
Neisseria gonorrhoeae
Resistencia antibiótica
Bacteriano
Caracterización molecular

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