Fig. 5
Relationship between Adpl level, (vertical), HMW form proportion (horizontal) and lung function parameters in non-hypoxemic men (a), hypoxemic men (b), non-hypoxemic women (c) and hypoxemic women (d) COPD patients. Adpl level was measured by ELISA and HMW form proportion was determined using a non-denaturing PAGE-SDS followed by a Western blot. Pearson correlation coefficients (R) between every parameter and either Adpl level or HMW form proportion were calculated and were represented as a point on the graph. The box in the graph represents the critical value for Pearson correlation coefficient to obtain a p < 0.05. Therefore, every point outside the box corresponds to a significant correlation