title: Depression of endostreptosin, streptolysin O and streptozyme antibodies in patients with idiopathic nephrosis with and without a nephrotic syndrome.
abstract: We determined antibody titers to Endostreptosin (ESS), a recently described protein antigen in the cytoplasm and the plasma membrane of Group A streptococci in 286 normals of different age groups and in 34 children and 19 adults who had or had had at one time a nephrotic syndrome due to idiopathic nephrosis. Antistreptolysin O titers were also determined in 33 of the idiopathic nephrotics. Similarly, antibody titers to Streptozyme were determined in 21 patients with idiopathic nephrosis and 61 normals with a similar age distribution. Severe depression of these antibody titers was found in almost all patients with this disease not only during the presence of a nephrotic syndrome but for long periods up to 20 years following an episode of a nephrotic syndrome when the patients were in complete remission. Patients with a nephrotic syndrome due to chronic glomerulonephritis (5), S.L.E. (4), membranous nephropathy (5), diabetes mellitus (1) or amyloidosis (1) did not show abnormally low values for antibodies to Endostreptosin, Streptolysin O or Streptozyme. High-dose steroid medication as such for prolonged periods of time does not depress Endostreptosin or Streptolysin O antibody titers below the expected mean, as demonstrated in 15 patients with S.L.E.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000907:Antibodies, Bacterial / Q000032:analysis*; D000942:Antigens, Bacterial / Q000276:immunology*; D001426:Bacterial Proteins; D002648:Child; D002675:Child, Preschool; D004912:Erythrocytes / Q000276:immunology; D005260:Female; D006801:Humans; D006867:Hydrolases / Q000276:immunology; D007202:Indicators and Reagents; D007223:Infant; D008297:Male; D008875:Middle Aged; D009402:Nephrosis, Lipoid / Q000276:immunology*; D009404:Nephrotic Syndrome / Q000276:immunology; D012698:Serologic Tests; D013300:Streptokinase / Q000276:immunology; D013301:Streptolysins / Q000276:immunology*
chemical_list: D000907:Antibodies, Bacterial; D000942:Antigens, Bacterial; D001426:Bacterial Proteins; D007202:Indicators and Reagents; D013301:Streptolysins; C030996:endostreptosin; C025964:streptolysin O; C022683:streptozyme test; D006867:Hydrolases; D013300:Streptokinase