Abstract:Objective To detect the expression levels of serum galectin-3 and vascular adhesion protein-1 (VAP-1) in patients with chronic obstructive pulmonary disease (COPD), and to explore its clinical significance. Methods From January 2016 to December 2017, 100 patients with stable COPD were selected as the stable COPD group, and 100 healthy volunteers were selected as the control group. The differences in serum galectin-3 level, serum VAP-1 level, pulmonary function indexes, inflammatory cytokines levels and the COPD Assessment Test (CAT) score were compared between the two groups. The correlations of serum galectin-3 and VAP-1 levels with pulmonary function indexes, inflammatory cytokines levels and the CAT score were analyzed,and the correlation between serum galectin-3 level and serum VAP-1 level was also analyzed. Results The serum galectin-3 and VAP-1 levels in the stable COPD group were significantly higher than those in the control group (P < 0.05). The pulmonary function indexes in the stable COPD group including forced vital capacity (FVC), forced expiratory volume in one second (FEV1) and FEV1/FVC were significantly lower than those in the control group (P < 0.05). The inflammatory cytokines in the stable COPD group including IL-6, hs-CRP and TNF-α were significantly higher than those in the control group (P < 0.05). The CAT score in the stable COPD group was higher than that in the control group (P < 0.05). The serum galectin-3 and VAP-1 levels in the stable COPD group were negatively correlated with the pulmonary function indexes (P < 0.05), but positively correlated with the inflammatory cytokines and the CAT score (P < 0.05). There was a positive correlation between the serum galectin-3 and VAP-1 levels (P < 0.05). Conclusions Serum levels of galectin-3 and VAP-1 in patients with stable COPD are increased, and closely related to pulmonary function, inflammatory factors and the quality of life.