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Immunoglobulin subclass (IgG3) restriction of anti-P and anti-Pk antibodies in patients of the rare p blood group.

Authors
  • Söderström, T
  • Enskog, A
  • Samuelsson, B E
  • Cedergren, B
Type
Published Article
Journal
Journal of immunology (Baltimore, Md. : 1950)
Publication Date
Jan 01, 1985
Volume
134
Issue
1
Pages
1–3
Identifiers
PMID: 3964810
Source
Medline
License
Unknown

Abstract

Serum antibodies against globoside and ceramide trihexoside, two major glycolipids in human erythrocytes, were investigated in 29 individuals with the rare p blood group. Antibodies of the IgM and of the IgG3 classes were detected. In AB Rh(-) blood donors, who were not of the p blood group, low levels of antibodies of the IgM class were found against P and Pk, whereas no antibodies were detected in cord blood. The increased number of spontaneous abortions and stillbirths observed among the p individuals may relate to the presence of IgG3 antibodies, because such antibodies pass the placental barrier and are efficient in complement activation and in mediating antibody-dependent cytotoxicity.

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