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C-reactive protein levels in the serum of asthmatic patients
Miyoshi Fujita1, Shigeharu Ueki, Wataru Ito
1Department of Clinical and Laboratory Medicine, Akita University School of Medicine, Akita, Japan.
Background:
Asthma is a chronic airway inflammatory disease caused by immune cells such as T lymphocytes and eosinophils. Recently, highly sensitive C-reactive protein (hs-CRP) assays have become available for detecting small changes in CRP levels within the reference range, allowing for the evaluation of clinical inflammation.
Objective:
To investigate the relationship between hs-CRP levels and bronchial asthma.
Methods:
We collected blood samples from 109 patients with bronchial asthma, with or without attacks, and measured serum eosinophil cationic protein levels, pulmonary function, and serum CRP levels using an hs-CRP assay.
Results:
Mean serum hs-CRP levels were significantly higher in patients without attacks (0.473 mg/L) and with attacks (0.908 mg/L) (P < .001 for both) than in controls (0.262 mg/L). Serum hs-CRP levels were inversely correlated with forced expiratory volume in 1 second/forced vital capacity in asthmatic patients (r = -0.4915; P < .01).
Conclusion:
Serum hs-CRP levels may be related to the state of asthma exacerbation and allergic inflammation.
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