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MINI SYMPOSIUM: RHEUMATIC FEVER AND RHEUMATIC HEART DISEASE  

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 Genes, autoimmunity and pathogenesis of rheumatic heart disease

L Guilherme1, KF Köhler1, E Postol1, J Kalil2
1 Heart Institute (InCor), School of Medicine, University of São Paulo, São Paulo;Institute for Immunology Investigation, National Institute for Science and Technology, University of São Paulo, São Paulo, Brazil
2 Heart Institute (InCor), School of Medicine, University of São Paulo, São Paulo;Institute for Immunology Investigation, National Institute for Science and Technology, University of São Paulo, São Paulo;Clinical Immunology and Allergy Division, School of Medicine, University of São Paulo, São Paulo, Brazil

Correspondence Address:
L Guilherme
Av. Dr. Eneas de Carvalho Aguiar, 44. 05403-903 São Paulo, SP
Brazil
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0974-2069.79617

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Year : 2011  |  Volume : 4  |  Issue : 1  |  Page : 13-21

 
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Pathogenesis of rheumatic heart disease (RHD) remains incompletely understood. Several genes associated with RHD have been described; most of these are involved with immune responses. Single nucleotide polymorphisms in a number of genes affect patients with RHD compared to controls. Molecular mimicry between streptococcal antigens and human proteins, including cardiac myosin epitopes, vimentin and other intracellular proteins is central to the pathogenesis of RHD. Autoreactive T cells migrate from the peripheral blood to the heart and proliferate in the valves in response to stimulation with specific cytokines. The types of cells involved in the inflammation as well as different cytokine profiles in these patients are being investigated. High TNF alpha, interferon gamma, and low IL4 are found in the rheumatic valve suggesting an imbalance between Th1 and Th2 cytokines and probably contributing to the progressive and permanent valve damage. Animal model of ARF in the Lewis rat may further contribute towards understanding the ARF.






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 © 2008 Annals of Pediatric Cardiology | Published by Wolters Kluwer - Medknow
 Online since 20th April, 2008

 

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 MINI SYMPOSIUM: RHEUMATIC FEVER AND RHEUMATIC HEART DISEASE
 



L Guilherme1, KF Köhler1, E Postol1, J Kalil2
1 Heart Institute (InCor), School of Medicine, University of São Paulo, São Paulo;Institute for Immunology Investigation, National Institute for Science and Technology, University of São Paulo, São Paulo, Brazil
2 Heart Institute (InCor), School of Medicine, University of São Paulo, São Paulo;Institute for Immunology Investigation, National Institute for Science and Technology, University of São Paulo, São Paulo;Clinical Immunology and Allergy Division, School of Medicine, University of São Paulo, São Paulo, Brazil

Correspondence Address:
L Guilherme
Av. Dr. Eneas de Carvalho Aguiar, 44. 05403-903 São Paulo, SP
Brazil
Login to access the Email id

Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0974-2069.79617

Rights and Permissions

Pathogenesis of rheumatic heart disease (RHD) remains incompletely understood. Several genes associated with RHD have been described; most of these are involved with immune responses. Single nucleotide polymorphisms in a number of genes affect patients with RHD compared to controls. Molecular mimicry between streptococcal antigens and human proteins, including cardiac myosin epitopes, vimentin and other intracellular proteins is central to the pathogenesis of RHD. Autoreactive T cells migrate from the peripheral blood to the heart and proliferate in the valves in response to stimulation with specific cytokines. The types of cells involved in the inflammation as well as different cytokine profiles in these patients are being investigated. High TNF alpha, interferon gamma, and low IL4 are found in the rheumatic valve suggesting an imbalance between Th1 and Th2 cytokines and probably contributing to the progressive and permanent valve damage. Animal model of ARF in the Lewis rat may further contribute towards understanding the ARF.






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 © 2008 Annals of Pediatric Cardiology | Published by Wolters Kluwer - Medknow
 Online since 20th April, 2008