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First-choice antibiotics at subinhibitory concentrations induce persistence of Chlamydia pneumoniae

Jens Gieffers1, Jan Rupp, Andreas Gebert

  • 1Institute of Medical Microbiology and Hygiene, University of Lübeck, 23538 Luebeck, Germany. Jens.Gieffer@hygiene.ukl.mu-luebeck.de

Antimicrobial Agents and Chemotherapy
|March 30, 2004
PubMed

Insights

First-line antibiotics can trigger persistent growth forms of Chlamydia pneumoniae, even at low doses. This discovery impacts understanding and treatment of chronic bacterial infections.

Area of Science:

  • Microbiology
  • Infectious Diseases
  • Bacterial Pathogenesis

Background:

  • Persistent growth forms of Chlamydia pneumoniae are linked to chronic infections.
  • Understanding the mechanisms of persistence is crucial for effective treatment.

Purpose of the Study:

  • To investigate how first-line therapeutics affect the induction of Chlamydia pneumoniae persistence.
  • To analyze the impact of antibiotics on recoverable organisms, gene expression, and bacterial morphology.

Main Methods:

  • Monitoring of recoverable Chlamydia pneumoniae organisms.
  • Analysis of gene expression for membrane proteins.
  • Microscopic examination of bacterial morphology.

Main Results:

  • All tested antibiotics induced persistence at distinct, subinhibitory concentrations.
  • Antibiotic treatment influenced Chlamydia pneumoniae morphology and gene expression.
  • Recoverable organisms were detected even after antibiotic exposure.

Conclusions:

  • Subinhibitory concentrations of common antibiotics can induce persistent Chlamydia pneumoniae.
  • This persistence mechanism may contribute to chronic infection and treatment failure.
  • Further research is needed to develop strategies against persistent bacterial forms.

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