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Association between C-reactive protein and pulmonary function in postmenopausal women
Dong-Hyuk Jung1, Yong-Jae Lee, Hong-Yup Ahn
1Department of Family Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea.
Maturitas
|March 27, 2010
Summary
Elevated C-reactive protein (CRP) is linked to reduced lung function in postmenopausal women. Higher CRP levels correlate with a greater likelihood of impaired pulmonary function, particularly a low forced vital capacity (FVC).
Area of Science:
- Pulmonary Medicine
- Immunology
- Epidemiology
Background:
- Chronic inflammation is implicated in various age-related diseases.
- C-reactive protein (CRP) is a key marker of systemic inflammation.
- Pulmonary function naturally declines with age, but other factors can accelerate this process.
Purpose of the Study:
- To examine the relationship between C-reactive protein (CRP) levels and pulmonary function.
- To specifically investigate the association with impaired lung function, including restrictive patterns, in postmenopausal women.
- To determine if CRP is an independent predictor of reduced lung capacity in this demographic.
Main Methods:
- A cross-sectional study was conducted with 1555 non-smoking postmenopausal women.
- C-reactive protein (CRP) was categorized into three risk groups: <0.5 mg/dl, 0.5-1.0 mg/dl, and 1.0-10.0 mg/dl.
- Odds ratios for low forced vital capacity (FVC) were calculated across CRP groups, adjusting for confounders.
Main Results:
- CRP levels showed a negative association with forced expiratory volume (FEV1)/forced vital capacity (FVC) and FVC.
- Adjusted odds ratios for low FVC increased significantly with higher CRP categories.
- Women in the medium and high CRP risk groups had substantially higher odds of low FVC compared to the very low risk group.
Conclusions:
- Increased C-reactive protein (CRP) levels are strongly associated with impaired pulmonary function in postmenopausal women.
- This association appears to be independent of other confounding variables.
- Elevated CRP is a significant indicator of reduced lung function and a higher prevalence of low FVC in this population.
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