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Rheumatic Heart Disease

Group A streptococcal M protein peptides induce autoimmune valvulitis in rats

Published in Drug Week, August 1st, 2003

Autoimmune valvulitis was induced in Lewis rats following immunization with peptides from the conserved region of group A streptococcal M protein.

"Rheumatic heart disease (RHD) is considered to be an autoimmune disorder mediated by group A streptococcal (GAS) M protein-specific T cells and antibodies that cross-react with cardiac antigens and epitopes of the GAS M protein. In this study, Lewis rats were immunized with a pool of overlapping peptides spanning the conserved region of the GAS M protein in Complete Freund's Adjuvant, followed by immunization with Bordetella pertussis. Controls received adjuvants alone," scientists writing in the Journal of...

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