Document Detail

Anti-heart and anti-intercalated disk autoantibodies: evidence for autoimmunity in idiopathic recurrent acute pericarditis.
MedLine Citation:
PMID:  20448129     Owner:  NLM     Status:  In-Process    
BACKGROUND: Idiopathic recurrent acute pericarditis (IRAP) is a rare disease of suspected, yet unproved, immune-mediated origin. The finding of serum heart-specific autoantibodies in IRAP would strengthen the autoimmune hypothesis and provide aetiology-specific non-invasive biomarkers. Objective To assess frequency of serum anti-heart (AHA), anti-intercalated-disk (AIDA) and non-cardiac-specific autoantibodies and their clinical and instrumental correlates in patients with IRAP. Patients 40 consecutive patients with IRAP, 25 male, aged 37+/-16 years, representing a large single-centre cohort collected at a referral centre over a long time period (median 5 years, range 1-22 years). Control groups included patients with non-inflammatory cardiac disease (NICD) (n=160), ischaemic heart failure (n=141) and normal subjects (n=270).
METHODS: AHA (organ-specific, cross-reactive 1 and 2 types) and AIDA were detected in serum samples from patients, at last follow-up, and control subjects by indirect immunofluorescence (IIF) on human myocardium and skeletal muscle. Non-cardiac-specific autoantibodies were detected by IIF, and anti-Ro/SSA, anti-La/SSB by ELISA.
RESULTS: The frequencies of cross-reactive 1 AHA and of AIDA were higher (50%; 25%) in IRAP than in NICD (4%; 4%), ischaemic (1%; 2%) or normal subjects (3%; 0%) (p=0.0001). AHA and/or AIDA were found in 67.5% patients with IRAP. Of the non-cardiac-specific antibodies, only antinuclear autoantibodies at titre > or =1/160 were more common in IRAP (5%) versus normal (0.5%, p<0.04). AIDA in IRAP were associated with a higher number of recurrences (p=0.01) and hospitalisations (p=0.0001), high titre (1/80 or higher) AHA with a higher number of recurrences (p=0.02).
CONCLUSIONS: The detection of AHA and of AIDA supports the involvement of autoimmunity in the majority of patients with IRAP.
A L P Caforio; A Brucato; A Doria; G Brambilla; A Angelini; A Ghirardello; S Bottaro; F Tona; C Betterle; L Daliento; G Thiene; S Iliceto
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Heart (British Cardiac Society)     Volume:  96     ISSN:  1468-201X     ISO Abbreviation:  Heart     Publication Date:  2010 May 
Date Detail:
Created Date:  2010-05-07     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9602087     Medline TA:  Heart     Country:  England    
Other Details:
Languages:  eng     Pagination:  779-84     Citation Subset:  AIM; IM    
Division of Cardiology, Department of Cardiological, Thoracic and Vascular Sciences, Centro V Gallucci,University of Padova-Policlinico, Via Giustiniani, 2, Padova 35128, Italy.
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Comment In:
Heart. 2010 May;96(10):734-5   [PMID:  20448122 ]

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