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Chlamydia pneumoniae infection in patients with diffuse panbronchiolitis and COPD

N Miyashita1, Y Niki, M Nakajima

  • 1Department of Medicine, Kawasaki Medical School, Kurashiki City, Okayama, Japan.

Chest
|October 29, 1998
PubMed
Abstract

Insights

Chlamydia pneumoniae infection is linked to acute exacerbations in Chronic Obstructive Pulmonary Disease (COPD) and is common in COPD patients. This bacterial infection was not found to be associated with diffuse panbronchiolitis (DPB).

Area of Science:

  • Respiratory Medicine
  • Infectious Diseases
  • Microbiology

Background:

  • Chronic Obstructive Pulmonary Disease (COPD) and diffuse panbronchiolitis (DPB) are significant respiratory conditions.
  • The role of Chlamydia pneumoniae infection in these diseases requires further investigation.

Purpose of the Study:

  • To investigate the association between Chlamydia pneumoniae infection and both COPD and DPB.
  • To determine if Chlamydia pneumoniae plays a role in acute exacerbations of these respiratory conditions.

Main Methods:

  • A prospective case-control study was conducted.
  • Patients with DPB and COPD, along with control subjects, provided nasopharyngeal swabs and serum samples.
  • Chlamydia pneumoniae isolation and antibody testing (IgG and IgA) were performed.

Main Results:

  • Chlamydia pneumoniae was isolated from one DPB patient, but not from COPD patients or controls.
  • Serologic evidence of acute infection was found in 6.7% of DPB patients and 7.8% of COPD patients.
  • COPD patients showed significantly higher prevalence and antibody titers of Chlamydia pneumoniae compared to controls.

Conclusions:

  • Chlamydia pneumoniae infection may be associated with acute exacerbations of COPD.
  • Chronic Chlamydia pneumoniae infection is prevalent in COPD patients but not in DPB patients.

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