SVR-flaA typing of erythromycin- and ciprofloxacin-resistant Campylobacter jejuni strains isolated from poultry slaughterhouses in southern Brazil

Dias, Thomas Salles; Figueira, Arthur de Almeida; Costa, Gisllany Alves; Cunha, Nathalie Costa da; Rossi, Daise Aparecida; Melo, Roberta Torres de; Pereira, Virginia Léo de Almeida; Aquino, Maria Helena Cosendey de

doi:10.1007/s42770-023-00969-5

Cited by 2 publications

(1 citation statement)

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“…In Brazil, campylobacteriosis has been a neglected disease, and there are insufficient data to estimate the commonality of this pathogen in the country [14]. However, there are Brazilian studies that have also confirmed phenotypic resistance to ciprofloxacin and/or erythromycin and/or tetracycline in Campylobacter strains [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Antibacterial Activity of Isatin against Campylobacter jejuni and Campylobacter coli Strains

Barroso,

Seki,

Esteves

et al. 2024

Applied Microbiology

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Antibiotic resistance, particularly against fluoroquinolones and macrolides, has emerged globally among thermophilic Campylobacters (Campylobacter jejuni and Campylobacter coli), giving rise to concerns about the efficacy of antibiotic treatment of these bacteria. Thus, developing new antibacterials with excellent activity is important. Isatin (IST) and its derivatives have exhibited promising antibacterial activities in several pathogenic bacteria. However, its activity against Campylobacter is unknown. Therefore, this study was conducted to evaluate the antibacterial activity of isatin against 29-Campylobacter strains (C. jejuni-17 and C. coli-12) and investigate the effects at the cellular level. The minimal inhibitory concentrations (MICs) of isatin were between <1.0 and 16.0 µg/mL in Campylobacter strains. Most strains presented with MIC = 8.0 µg/mL (76%). The minimal bactericidal concentration (MBC) was determined to be 16.0 µg/mL for 72% of the Campylobacter strains tested. The 50% inhibitory concentration (IC50) value for isatin was 125.63 µg/mL on the MRC-5 normal cell line, suggesting that isatin can be considered a safe substance in terms of cytotoxicity. In this study, we demonstrated the potential of isatin based on its low toxicity and effectiveness in vitro against antibiotic-resistant Campylobacter strains, which indicates that this compound could be an attractive candidate for future use in multidrug-resistant Campylobacter treatment.

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