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. 2019 Jul 22;14:1611–1631. doi: 10.2147/COPD.S184097

Figure 9.

Figure 9

Graphical representation of the most relevant and significant correlations of chitotriosidase and YKL-40 peripheral blood levels (A–C) and sputum levels (D–H) with clinical measures in patients with COPD.

Notes: Panels showing correlation between: (A) chitotriosidase PBMC mRNA expression and pack-years of smoking, (B) YKL-40 serum concentration and sputum neutrophils, (C) YKL-40 PBMC mRNA expression and time since diagnosis, (D) chitotriosidase sputum concentration and FEV1% predicted, (E) chitotriosidase sputum concentration and FEV1/FVC%, (F) chitotriosidase sputum activity and age, (G) YKL-40 sputum concentration and time since diagnosis, (H) YKL-40 sputum mRNA expression and sputum eosinophils.