Lack of adherence of IgG-, IgM-, and C3b-sensitized erythrocytes to human heart valves.
In a search for receptors for immunoglobulin Fc fragment and activated complement component C3 (C3b) in normal or rheumatic heart valve tissues, sheep erythrocytes sensitized with IgM (IgM EA), IgG (IgG EA) and IgM plus activated complement (IgM EA C3b) were used in a closed-chamber immune adherence technique. Neither this method nor a separate immunofluorescence technique revealed the presence of such immunologic receptors in frozen sections of heart valves.
D000328:Adult; D002448:Cell Adhesion; D003179:Complement C3b / Q000378:metabolism; D004912:Erythrocytes / Q000276:immunology* / Q000378:metabolism; D006801:Humans; D007104:Immune Adherence Reaction; D007074:Immunoglobulin G / Q000378:metabolism; D007075:Immunoglobulin M / Q000378:metabolism; D008943:Mitral Valve / Q000276:immunology*; D012214:Rheumatic Heart Disease / Q000209:etiology / Q000276:immunology
D007074:Immunoglobulin G; D007075:Immunoglobulin M; D003179:Complement C3b