Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2019 Sep 9;63(12):e01470-19.
doi: 10.1128/AAC.01470-19. Epub 2019 Sep 30.

Demonstration of the broad spectrum in vitro activity of finafloxacin against pathogens of biodefence interest

Affiliations

Demonstration of the broad spectrum in vitro activity of finafloxacin against pathogens of biodefence interest

Kay B Barnes et al. Antimicrob Agents Chemother. .

Abstract

This study investigated the in vitro activity of finafloxacin against panels of the biodefence pathogens. Broth microdilution assays were performed at neutral and acidic pH, to determine the effectiveness of the antibiotics in conditions typical of an intracellular environment. In all instances, finafloxacin demonstrated superior activity at low pH. These results highlight the importance of evaluating antimicrobial efficacy in conditions relevant to those encountered in vivo.

PubMed Disclaimer

Figures

FIG 1
FIG 1
Cumulative MICs determined for a panel of B. pseudomallei strains for finafloxacin (n = 21), ciprofloxacin (n = 11), and ceftazidime (n = 11) at pH 5 (A) and pH 7 (B).

References

    1. Akova M, Gür D, Livermore DM, Kocagöz T, Akalin HE. 1999. In vitro activities of antibiotics alone and in combination against Brucella melitensis at neutral and acidic pHs. Antimicrob Agents Chemother 43:1298–1300. doi:10.1128/AAC.43.5.1298. - DOI - PMC - PubMed
    1. Cyphert EL, Wallat JD, Pokorski JK, von Recum HA. 2017. Erythromycin modification that improves its acidic stability while optimizing it for local drug delivery. Antibiotics 6:11–15. doi:10.3390/antibiotics6020011. - DOI - PMC - PubMed
    1. Yang L, Wang K, Li H, Denstedt JD, Cadieux PA. 2014. The influence of urinary pH on antibiotic efficacy against bacterial uropathogens. Urology 84:731.e1–731.e7. doi:10.1016/j.urology.2014.04.048. - DOI - PubMed
    1. Badoux P, Bles N, Lemaire S, Mingeot-Leclercq MP, Tulkens PM, van Bambeke F. 2007. Combined effect of pH and concentration on the activities of gentamicin and oxacillin against Staphylococcus aureus in pharmacodynamics models of extracellular and intracellular infections. J Antimicrob Chemother 59:246–253. doi:10.1093/jac/dkl489. - DOI - PubMed
    1. Kocsis B, Domokos J, Szabo D. 2016. Chemical structure and pharmacokinetics of novel quinolone agents represented by avarofloxacin, delafloxacin, finafloxacin, zabofloxacin and nemonoxacin. Ann Clin Microb Antimicrob 15:34. doi:10.1186/s12941-016-0150-4. - DOI - PMC - PubMed

LinkOut - more resources