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The role of the immunogenetic background in the development and recurrence of acute idiopathic pericarditis
Authors
G. Lazaros Karavidas, A. Spyropoulou, M. Tsiachris, D. Halapas, A. Zacharoulis, A. Arapi, S. Matzaraki, V. Papadopoulos, K. Korres, D. Iniotaki, A. Pyrgakis, V. Stefanadis, C.
Publication date
1 January 2011
Publisher
Abstract
Objectives: We assessed the role of the immunogenetic background in the development and recurrence of acute idiopathic pericarditis (AIP). Methods: Fifty-five patients with a first episode of AIP were followed for 23.8 ± 6.3 months and recurrences were recorded. The control group consisted of 246 healthy individuals. In all subjects, genomic human leukocyte antigen (HLA) typing was performed. Moreover, circulating lymphocyte subpopulations were studied in 44 randomly selected patients and in 20 controls. Results: An increased frequency of HLA-A*02, -Cw*07 and -DQB1*0202 alleles, and a decreased frequency of the -DQB1*0302 allele was detected in patients with AIP. The recurrence rate was 40% and time to recurrence was 202.8 ± 164.1 days. In patients with idiopathic recurrent pericarditis (RP), increased frequencies of HLA-A*02, -Cw*07 and -DQB1*0202 alleles were found. Notably, no patient with RP exhibited HLA-DRB1*04 and -DQB1*0302 alleles. Patients with RP exhibited lower CD4+/CD45RA+ naïve T cells (p = 0.03) than controls, and higher CD8+DR+ activated T cells (p = 0.01) than patients without recurrence and controls. Conclusions: HLA alleles may confer either susceptibility or resistance to AIP and RP. Circulating T-cell subpopulations may also predict RP. A combination of the above parameters might help to better define patients prone to recurrence. Copyright © 2011 S. Karger AG, Basel
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Last time updated on 10/02/2023