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Immunodeficiency following splenectomy in the early postimmunization period
1Department of Surgery, Ottawa Civic Hospital, Canada.
The British Journal of Surgery
|March 1, 1990
Summary
Splenectomy impacts where antibody-producing cells form after immunization. Removing the spleen before immunization shifts antibody cell production to lymph nodes, maintaining immune memory.
Area of Science:
- Immunology
- Surgical Pathology
Background:
- Splenectomy increases infection risk from encapsulated microbes.
- The underlying immunological defects post-splenectomy are not fully understood.
Purpose of the Study:
- To investigate the impact of splenectomy on antibody-forming cell and memory cell localization.
- To understand the role of the spleen in immune response following immunization.
Main Methods:
- Rabbits underwent splenectomy either before or after primary immunization with sheep erythrocytes.
- Antibody-forming cell and memory cell assays were conducted up to 270 days post-immunization.
- Antibody titers were measured after secondary immunization.
Main Results:
- In untreated rabbits, the spleen was the primary site for antibody-forming cells post-immunization, migrating later to lymph nodes and thymus.
- In rabbits splenectomized before immunization, peripheral lymph nodes became the main site for antibody-forming cells.
- Rabbits splenectomized before immunization showed robust secondary immune responses.
Conclusions:
- The spleen is crucial for localizing antibody-forming cells after primary immunization.
- Early splenectomy preserves immune memory, but late splenectomy impairs secondary immune responses, highlighting the spleen's role in housing these cells.