Activities of first-choice antimicrobials against gamma interferon-treated Chlamydia trachomatis differ in hypoxia

Antimicrob Agents Chemother. 2013 Jun;57(6):2828-30. doi: 10.1128/AAC.02211-12. Epub 2013 Mar 11.

Abstract

Gamma interferon (IFN-γ)-mediated host responses play a central role in resolving genital Chlamydia trachomatis infections but may also result in persistence of the pathogen, which shows reduced susceptibility to antimicrobials. The antichlamydial function of IFN-γ is oxygen dependent, and the efficacy of antimicrobials against C. trachomatis is reduced in a low-oxygen environment. In this study, we show that the antichlamydial efficacies of azithromycin and doxycycline differ in IFN-γ-treated cells under hypoxia.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Anti-Bacterial Agents / pharmacology*
  • Anti-Bacterial Agents / therapeutic use
  • Azithromycin / pharmacology*
  • Azithromycin / therapeutic use
  • Cell Hypoxia
  • Chlamydia Infections / drug therapy
  • Chlamydia Infections / microbiology
  • Chlamydia trachomatis / drug effects*
  • Doxycycline / pharmacology*
  • Doxycycline / therapeutic use
  • HeLa Cells / drug effects
  • HeLa Cells / microbiology
  • Humans
  • Interferon-gamma / pharmacology*
  • Interferon-gamma / therapeutic use
  • Oxygen / pharmacology*

Substances

  • Anti-Bacterial Agents
  • Interferon-gamma
  • Azithromycin
  • Doxycycline
  • Oxygen