RESUMEN
Objective To explore the relationship of pulmonary mycoplasma pneumoniae(MP) infection with acute exacerbated stages of chronic obstructive pulmonary disease(COPD) and community acquired pneumonia(CAP)in the elderly,comparing different serum concentrations of IFN -? ,IL-6,TNF-? in these patients. Methods Serologic analysis through ELISA method was used to detect MP-IgM and MP-IgG to determine the presence of MP and the serum concentrations of IFN-?、IL-6、TNF-? in 30 elderly healthy subjects,39 elderly patients with acute exacerbated stage of COPD and 40 elderly patients with CAP. PCR method was also used to determine the presence of MP from the patients ,sputum. Results (1)The positive rates of MP were much higher in the COPD patients than in the CAP and healthy ones according to PCR or MP-IgM method( P