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Updated: Jul 3, 2026

Anti-Nuclear Antibody Screening Using HEp-2 Cells
Published on: June 23, 2014
Anti-cyclic citrullinated peptide antibodies in lung diseases associated with rheumatoid arthritis
Naoki Inui1, Noriyuki Enomoto, Takafumi Suda
1The Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, Hamamatsu, Japan. inui@hama-med.ac.jp
Objective:
Anti-cyclic citrullinated peptide (anti-CCP) antibodies are highly specific markers for rheumatoid arthritis (RA) and useful for predicting RA development and progression. However, it has not been fully determined whether anti-CCP antibodies are associated with pulmonary diseases in RA patients. In the present study, we aimed to elucidate the relationships between anti-CCP antibodies and pulmonary diseases, particularly interstitial lung disease (ILD) and bronchiolitis.
Design And Methods:
Using an enzyme-linked immunosorbent assay, the presence of serum anti-CCP antibodies was examined in 18 RA patients with ILD and bronchiolitis who were diagnosed based on pathologic findings. A further 36 RA subjects without any pulmonary diseases served as a reference population.
Results:
No significant differences were found for the prevalences and levels of anti-CCP antibodies between patients with and without ILD and follicular bronchiolitis.
Conclusion:
Detection of serum anti-CCP antibodies has no association with pulmonary diseases in RA patients.
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