PTX 3 (pentraxin3) is associated with lung function among people with stable-stage smoking-related chronic obstructive pulmonary disease.

Background: Chronic obstructive pulmonary disease (COPD) is a prevalent chronic respiratory illness. Pentraxin-3 (PTX3) is abnormally elevated in the plasma of patients with acute exacerbation of COPD. However, the role and significance of PTX3 in the clinical diagnosis of COPD remain unclear.