Opsonic requirements for intravascular clearance after splenectomy.


Journal Article

We investigated the opsonic requirements for intravascular clearance of pneumococci in guinea pigs and of sensitized erythrocytes in human beings after splenectomy. The impaired clearance of injected pneumococci in splenectomized guinea pigs was corrected by immunization. This improvement in clearance was due to increased hepatic sequestration of organisms. There was a significant delay in antibody-mediated clearance of autologous erythrocytes sensitized with IgG (P < 0.001), although the rate of complement-mediated clearance in splenectomized patients was normal. A fourfold increase in sensitizing antibody resulted in a significant improvement in clearance that was due to increased hepatic sequestration (P < 0.005). One patient who had an intact spleen and who had previously received Thorotrast (thorium oxide) had impaired antibody-mediated clearance despite increased sensitization. These observations suggest that, after splenectomy the remaining macrophages of the reticuloendothelial system require increased amounts of antibody to mediate efficient intravascular clearance of opsonized particles.

Full Text

Cited Authors

  • Hosea, SW; Brown, EJ; Hamburger, MI; Frank, MM

Published Date

  • January 29, 1981

Published In

Volume / Issue

  • 304 / 5

Start / End Page

  • 245 - 250

PubMed ID

  • 7442756

Pubmed Central ID

  • 7442756

International Standard Serial Number (ISSN)

  • 0028-4793

Digital Object Identifier (DOI)

  • 10.1056/NEJM198101293040501


  • eng

Conference Location

  • United States