title: IgG subclass concentrations and Gm allotypes in IgA-deficient and normal pregnant women.
abstract: IgG subclass concentrations were measured in the serum of 40 IgA-deficient (IgA concentration < 0.01 milligram) and 38 normal women in the second trimester of pregnancy. In the IgA-deficient group, 2 women were also deficient in IgG2 and IgG4, while a further 10 had very low concentrations of serum IgG4 only. These low IgG4 values were unrelated to the presence of anti-IgA antibodies. The incidence of low IgG4 values was significantly greater (p < 0.01) than in the control group where only 1 woman had low IgG4 and none had low IgG2. Mean values for total IgG, IgG1 and IgG3 were very significantly higher (p < 0.001) in the IgA-deficient group than in the control group. These differences were unrelated to Gm phenotype.
authors.affiliation: Department of Child Health, Aberdeen University, UK.
authors.forename: H
authors.initials: H
authors.lastname: Thom
authors.forename: M J
authors.initials: MJ
authors.lastname: Main
authors.forename: P
authors.initials: P
authors.lastname: Duffy
authors.forename: P E
authors.initials: PE
authors.lastname: Carter
mesh_terms: D005260:Female; D006801:Humans; D017098:IgA Deficiency / Q000276:immunology*; D007121:Immunocompetence; D007074:Immunoglobulin G / Q000097:blood*; D007129:Immunoglobulin Gm Allotypes / Q000097:blood; D008137:Longitudinal Studies; D010641:Phenotype; D011247:Pregnancy / Q000276:immunology*; D012016:Reference Values
chemical_list: D007074:Immunoglobulin G; D007129:Immunoglobulin Gm Allotypes