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Gender differences in the association between C-reactive protein, lung function impairment, and COPD.
Inga Sif Olafsdóttir1, Thórarinn Gíslason, Bjarni Thjódleifsson
1Department of Medical Sciences, Respiratory Medicine and Allergology, Uppsala University, Uppsala, Sweden. inga_sif.olafsdottir@medsci.uu.se
International Journal of Chronic Obstructive Pulmonary Disease
|February 14, 2008
Summary
High C-reactive protein (CRP) levels are linked to chronic obstructive pulmonary disease (COPD) and reduced lung function. This systemic inflammation marker, CRP, is particularly associated with faster lung function decline in men with COPD.
Area of Science:
- Pulmonary Medicine
- Inflammation Research
- Epidemiology
Background:
- Chronic obstructive pulmonary disease (COPD) is associated with systemic inflammation.
- C-reactive protein (CRP) is a marker of systemic inflammation.
- The relationship between CRP, COPD, and lung function decline requires further investigation.
Purpose of the Study:
- To evaluate the association between C-reactive protein (CRP) levels and COPD.
- To assess the relationship between CRP and lung function (FEV1).
- To determine if CRP is related to the rate of lung function decline.
Main Methods:
- Analysis of 1237 randomly selected subjects from the European Community Respiratory Health Survey.
- Measurement of C-reactive protein (CRP) levels at follow-up (mean 8.3 years).
- Spirometry to diagnose COPD (FEV1/FVC < 70%) and assess lung function and decline.
Main Results:
- COPD was more prevalent in the highest CRP quartile (OR 3.21).
- Higher CRP levels correlated with lower FEV1 in both men and women, with a stronger association in men.
- Men with high CRP levels exhibited a significantly larger decline in FEV1 over time.
Conclusions:
- Elevated CRP levels are significantly associated with COPD and reduced lung function in both sexes.
- Higher CRP is linked to a more rapid decline in lung function, particularly in men.
- CRP may serve as a valuable biomarker for systemic inflammation in COPD patients.
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