Chlamydia pneumoniae infection in asthmatic patients

Abstract

This study was conducted on 30 asthmatic patients and 10 healthy controls. They were subjected to complete history talking, thorough clinical examination, and assessment of their ventilatory functions before and after bronchodilator. Two specimens were obtained from each patients, bronchoalveolar lavage and serum samples. Chlamydia pneumoniae antigens and antibodies (IgG and IgM) were detected using microimmunoflourescence technique. Samples giving positive results for C. pneumoniae antigen were examined for apoptosis. A significant correlation between asthma and C. pnumoniae was found especially in moderate and severe, long standing, steroid dependent asthma. In addition there was a significant difference between cases and controls regarding specific IgG and IgM. An association of C. pneumoniae with forced expiratory volume 1 (FEVI) was found. In addition C. pneumoniae was found to induce inhibition of programmed cell death. On conclusion, C. pneumoniae infection is associated with severe long standing asthma, and may be an important factor in acute exacerbation of asthma.