Journal of Antimicrobial Chemotherapy, Vol 39, 63-65, Copyright © 1997 by The British Society for Antimicrobial Chemotherapy
RB Jones, B Van der Pol and RB Johnson
Chlamydia trachomatis infections are a major cause of morbidity in the
sexually active. While current therapy is usually effective, isolates
demonstrating relative resistance to erythromycin or heterotypic resistance
to erythromycin, tetracycline and their congeners have been described,
establishing a need to continue to evaluate other antimicrobial agents for
possible efficacy. In this study trovafloxacin, a compound related to the
fluoroquinolones, was tested in tissue culture for in-vitro efficacy
against 19 strains of C. trachomatis, including three strains known to
exhibit heterotypic resistance. All strains were fully sensitive to
trovafloxacin with a minimum inhibitory concentration at which 90% of
inclusions were reduced (IR90) of 0.05 +/- 0.07 mg/L (mean +/- S.D.). The
IR90 for the comparison antibiotics erythromycin, doxycycline and ofloxacin
were 0.17 +/- 0.07, 0.10 +/- 0.03 and 0.35 +/- 0.15 mg/L respectively.
Trovafloxacin is very active on a weight basis and deserves further
evaluation.
ORIGINAL ARTICLES
Susceptibility of Chlamydia trachomatis to trovafloxacin
Department of Medicine, Indiana University School of Medicine, Indianapolis 46202, USA.
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