Meningococcal Antibiotic Resistance: Molecular Characterization of Isolates from Patients with Invasive Meningococcal Disease (IMD) in Greece

Overview

Journal Antibiotics (Basel)

Specialty Pharmacology

Date 2023 Jul 29

PMID 37508232

Authors

Ioanna Spiliopoulou

Athanasia Xirogianni

Stelmos Simantirakis

Georgina Tzanakaki

Affiliations

Soon will be listed here.

Abstract

For effective case management and chemoprophylaxis of Invasive Meningococcal Disease (IMD), prompt antibiotic treatment is required. is usually susceptible to antibiotics, but reduced susceptibility to penicillin, ciprofloxacin, and rifampicin is increasing worldwide, jeopardizing patients' outcome. We assessed, phenotypically and genotypically, the antimicrobial resistance patterns of 192 strains isolated from IMD cases from all over Greece during 2010-2021. Antimicrobial susceptibility to penicillin, rifampicin, and ciprofloxacin was determined using the E-test. All isolates were genotyped by Multilocus Sequence Typing (MLST). , and genes were amplified by PCR and sequenced. Of the 192 isolates, 37% (72/192) were penicillin-susceptible/had increased exposure, and 11% (21/192) were penicillin-resistant. Among those, 40 alleles were identified; , and were highly associated with susceptibility to penicillin; , and related to reduced susceptibility to penicillin, while , and had resistance to penicillin. Two ciprofloxacin-resistant isolates harbored the allele, while one rifampicin-resistant isolate harbored the allele. Resistance to ciprofloxacin and rifampicin remains rare. As Greece is one of the countries with high antimicrobial resistance, continued monitoring of antibiotic resistance is important to ensure timely detection of emerging resistance for treatment and prevention guidelines.

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