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• W4295762030 endingPage "3255" @default.
• W4295762030 startingPage "3248" @default.
• W4295762030 abstract "Enteric infections are a major public health issue in developing countries. Antimicrobial resistance is also a problem for enteric infection. OPS-2071 is a novel quinolone antibiotic with low oral absorption and potent antibacterial activity against Clostridioides difficile.This study was conducted to confirm the antimicrobial activity of OPS-2071 against major enteropathogenic bacteria and to evaluate the risk of emergence of drug resistance.The antibacterial activity was evaluated by the agar dilution method. The inhibitory activity against DNA gyrase and topoisomerase IV was determined by supercoiling assay and decatenation assay, respectively. The mutant prevention concentration and frequency of spontaneous resistance were determined by inoculation on drug-containing agar.Compared with the reference drugs, the antibacterial activity of OPS-2071 was more potent against Gram-positive bacteria and Campylobacter jejuni, including quinolone-resistant strains. Against other Gram-negative bacteria, OPS-2071 was comparable to existing quinolones. The inhibitory activities against DNA gyrase with quinolone-resistant mutations closely correlated with the antibacterial activity. Spontaneous resistance to OPS-2071 was not observed in Staphylococcus aureus and Escherichia coli and was lower than that of existing quinolones and higher than that of azithromycin in C. jejuni. The mutant prevention concentration of OPS-2071 was lower than that of tested compounds in S. aureus and C. jejuni and slightly higher than that of existing quinolones in E. coli.The broad and potent in vitro antibacterial activity and lower risk of drug resistance suggested that OPS-2071 may be useful for enteric infections caused by major pathogens including quinolone-resistant Campylobacter." @default.
• W4295762030 created "2022-09-15" @default.
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• W4295762030 date "2022-09-14" @default.
• W4295762030 modified "2023-10-13" @default.
• W4295762030 title "<i>In vitro</i> antibacterial activity of OPS-2071 against Gram-positive and Gram-negative enteropathogenic bacteria" @default.
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• W4295762030 doi "https://doi.org/10.1093/jac/dkac308" @default.
• W4295762030 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/36101508" @default.
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