title: Naturally occurring human antiglobulins with specificity for  E.
abstract: Human sera have been examined for antibodies with specific reactivity for gammaE using the tanned cell hemagglutination test. Cells tanned with three different gammaE myeloma proteins provided a reproducible test system. Inhibition of agglutination reactions by gammaE proteins, but not by gammaG, gammaA, gammaM, or gammaD confirmed the specificity of these reactions. 8.5% of 304 serial serum samples obtained from miscellaneous hospitalized patients showed clear-cut anti-gamma-globulins with specificity for gammaE. In most of these instances no definite clinical history of concomitant allergic disorders could be obtained. 53% of 73 patients with well-established allergic disorders (hay fever, extrinsic asthma) showed serum anti-gamma-globulins with reactivity for gammaE. Some patients studied before and after desensitization to Bermuda grass allergen showed an increase in titer or a conversion from negative to positive reactions for anti-gammaE antibodies following several month courses of progressive desensitization. Gradient and gel filtration studies indicated that anti-gammaE globulins were 19S gammaM in all instances. No clear correlation was noted between quantitative serum gammaE levels and titer of anti-gammaE antibodies.19S serum fractions with anti-gammaE antibody activity did not release histamine from normal human peripheral blood leukocytes, whereas specific rabbit anti-gammaE antisera consistently induced leukocytic histamine release. Moreover, macroglobulin fractions with anti-gammaE activity did not block allergen-specific leukocyte histamine release induced by in vitro leukocyte challenge with allergens such as Bermuda grass and leukocytes from allergic donors. In some instances 19S human serum fractions with anti-gammaE activity appeared to potentiate histamine release when incubated concomitantly with specific allergen and leukocytes from allergic individuals.
mesh_terms: D000485:Allergens; D000888:Antibodies, Anti-Idiotypic / Q000032:analysis*; D000936:Antigen-Antibody Complex; D001172:Arthritis, Rheumatoid / Q000276:immunology; D001196:Ascariasis / Q000276:immunology; D001249:Asthma / Q000276:immunology; D001491:Basophils / Q000276:immunology; D002499:Centrifugation, Density Gradient; D003888:Desensitization, Immunologic; D004485:Eczema / Q000276:immunology; D006386:Hemagglutination Tests; D006636:Histamine Release; D006801:Humans; D006967:Hypersensitivity / Q000276:immunology*; D007120:Immunochemistry; D007073:Immunoglobulin E / Q000032:analysis / Q000037:antagonists & inhibitors*; D007136:Immunoglobulins / Q000037:antagonists & inhibitors*; D007816:Larva Migrans, Visceral / Q000276:immunology; D007962:Leukocytes / Q000276:immunology; D008180:Lupus Erythematosus, Systemic / Q000276:immunology; D009021:Morphine Dependence / Q000276:immunology; D006255:Rhinitis, Allergic, Seasonal / Q000276:immunology
chemical_list: D000485:Allergens; D000888:Antibodies, Anti-Idiotypic; D000936:Antigen-Antibody Complex; D007136:Immunoglobulins; D007073:Immunoglobulin E