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DOI: 10.1055/s-2006-924961
© Georg Thieme Verlag Stuttgart · New York
Diagnostische und prognostische Bedeutung von Antikörpern gegen citrullinierte Peptide
Diagnostic and prognostic value of antibodies against citrullinated peptidesPublication History
eingereicht: 12.12.2005
akzeptiert: 23.1.2006
Publication Date:
06 February 2006 (online)

Zusammenfassung
Antikörper gegen citrullinierte Peptide (CCP-Antikörper) sind hoch spezifisch für die rheumatoide Arthritis. Mit ELISA-Verfahren der 2. Generation weisen CCP-Antikörper eine Spezifität von > 96 % und eine Sensitivität von 68 % auf. Auch können CCP-Antikörper oft schon Jahre vor dem ersten Auftreten von Symptomen nachgewiesen werden. Sie eignen sich daher ausgezeichnet für die Differentialdiagnose zwischen frühen Formen einer rheumatoiden Arthritis und anderen entzündlichen Gelenkerkrankungen. Da CCP-Antikörper mit aggressiven und therapierefraktären Verläufen einer rheumatoiden Arthritis assoziiert sind, kann dies für Entscheidungen zu einer frühzeitigen und intensiven Therapie herangezogen werden, um die Entstehung knöcherner Erosionen zu verhindern. Im Gegensatz zu dieser wichtigen differentialdiagnostischen Bedeutung spielen CCP-Antikörper keine Rolle für das Therapiemonitoring, da sie meist im Langzeitverlauf keine nennenswerten Veränderungen aufweisen.
Summary
Antibodies against citrullinated peptides are highly specific for rheumatoid arthritis. With second generation ELISA-kits, CCP-antibodies have a specificity of > 96 % and a sensitivity of 68 %. CCP-antibodies can be detected several years before the onset of clinical symptoms. They are, thus, ideally suited for the differential diagnosis between early forms of rheumatoid arthritis and other inflammatory arthritides. As CCP-antibodies are associated with aggressive and treatment resistant courses of rheumatoid arthritis, their high predictive value can be useful in therapeutic strategy decisions in order to verify early treatment with disease modifying drugs or biologicals in line with modern treatment approaches to start aggressive therapy early to prevent bone erosions. In contrast to their role in differential diagnosis and prediction of aggressive disease, however, CCP-antibodies are of no value in monitoring treatment as they do not change essentially over prolonged periods of time.
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