Abstract
Context: Endothelial function is abnormal in chronic obstructive pulmonary disease (COPD); whether endothelial dysfunction causes COPD is unknown. Objective: Test associations of endothelial biomarkers with FEV1 using instrumental variables. Methods: Among 26907 participants with spirometry, ICAM-1, P-selectin, E-selectin and endothelin-1 were measured in subsets. Results: ICAM-1 and P-selectin were inversely associated with FEV1 among European-Americans (-29mL and-34mL per standard deviation of log-transformed biomarker, p<0.001), as was endothelin-1 among African-Americans (-22mL, p=0.008). Genetically-estimated ICAM-1 and P-selectin were not significantly associated with FEV1. The instrumental variable for endothelin-1 was non-informative. Conclusion: Although ICAM-1, P-selectin and endothelin-1 were inversely associated with FEV1, associations for ICAM-1 and P-selectin do not appear causal.
Original language | English (US) |
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Pages (from-to) | 196-203 |
Number of pages | 8 |
Journal | Biomarkers |
Volume | 18 |
Issue number | 3 |
DOIs | |
State | Published - May 1 2013 |
Keywords
- Genetic polymorphisms
- Growth factors/cytokines/inflammatory mediators
- Respiratory disease