In vitro susceptibility and eradication of Chlamydia pneumoniae cardiovascular strains from coronary artery endothelium and smooth muscle cells

J Gieffers, W Solbach, M Maass

    Abstract

    UNLABELLED: Recovery of viable Chlamydia pneumoniae from atheromas of coronary heart diseases patients has initiated pilot studies to eradicate C. pneumoniae from vascular tissue by antibiotic treatment. To provide data for the selection of effective antibiotics, we investigated the in vitro activity of anti-chlamydial antibiotics to eliminate vascular strains of C. pneumoniae from coronary endothelial and smooth muscle cells, celltypes that are involved in the pathogenesis of atherosclerosis.

    METHODS: The susceptibility of the obligate intracellular chlamydiae was studied in primary coronary endothelial cells, smooth muscle cells and immortalized epithelial cells. Minimal inhibitory concentrations (MICs) were determined for ofloxacin, levofloxacin, trovafloxacin, moxifloxacin, erythromycin, azithromycin, roxithromycin, rifapentin and rifampin.

    RESULTS: In vitro, rifampin was the most effective drug overall. Moxifloxacin and trovafloxacin were as effective as the macrolides of which roxithromycin was the most active one.

    CONCLUSIONS: Actively replicating C. pneumoniae can be eliminated in vitro from cell types, involved in the pathogenesis of atherosclerosis by various antibiotics. These data provide an experimental background for the selection of antibiotics in clinical eradication studies and will help to assess the potential success of prevention and eradication therapies.

    Original languageEnglish
    JournalCardiovascular drugs and therapy
    Volume15
    Issue number3
    Pages (from-to)259-62
    Number of pages4
    ISSN0920-3206
    Publication statusPublished - 2001

    Research Areas and Centers

    • Academic Focus: Center for Infection and Inflammation Research (ZIEL)

    DFG Research Classification Scheme

    • 204-03 Medical Microbiology and Mycology, Hygiene, Molecular Infection Biology

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