title: Cold agglutinins in infectious mononucleosis and heterophil-antibody-negative mononucleosis-like syndromes.
abstract: Cold agglutinins (CA) were evaluated prospectively in patients with various mononucleosis syndromes and in a large control group. Cold agglutinins with anti-i specificity were seen mainly in heterophil-positive or -negative Epstein-Barr virus (EBV)-induced infectious mononucleosis (31.8% of cases). Unclassified CA with equal reactivity against cord and adult erythrocytes were seen in 56 of 150 (37.3%) cases of heterophil-antibody-positive infectious mononucleosis (IM), in 1 of 7 (14.3%) cases of heterophil-negative EBV-induced IM, and in 12 of 31 (38.7%) cases of the heterophil-negative mononucleosis-like syndrome due to cytomegalovirus or other unspecified agents. One patient with heterophil-positive IM had a persistent, partially papain sensitive CA with anti-Pr-like activity. Anti-i CA were seen in less than 1.0% of healthy young adults (500) or patients without mononucleosis (500) submitted for heterophil studies. Unclassified CA were noted in 3.2% of the latter 1000 samples.
mesh_terms: D000373:Agglutinins / Q000032:analysis*; D000910:Antibodies, Heterophile; D000914:Antibodies, Viral / Q000032:analysis; D001323:Autoantibodies / Q000032:analysis*; D003080:Cold Temperature; D003587:Cytomegalovirus / Q000302:isolation & purification; D004854:Herpesvirus 4, Human / Q000302:isolation & purification; D006801:Humans; D007048:I Blood-Group System; D007074:Immunoglobulin G / Q000032:analysis; D007075:Immunoglobulin M / Q000032:analysis; D007244:Infectious Mononucleosis / Q000276:immunology* / Q000382:microbiology; D010206:Papain
chemical_list: D000373:Agglutinins; D000910:Antibodies, Heterophile; D000914:Antibodies, Viral; D001323:Autoantibodies; D007048:I Blood-Group System; D007074:Immunoglobulin G; D007075:Immunoglobulin M; D010206:Papain