Related Experiment Videos
Cell-mediated immunity in patients with sickle cell anaemia
K Sanhadji1, R Chout, A Gessain
1Nephro-urology Transplantation and Clinical Immunology Unit, INSERM U 80, CNRS UA 1177, UCBL, Hôpital Edouard Herriot, Lyon, France.
Thymus
|January 1, 1988
Summary
Sickle cell disease (SS) patients exhibit impaired cellular immunity, with abnormal T-cell proportions and heightened lymphocyte responses to autologous serum. This suggests functional immune abnormalities in SS patients, potentially linked to serum-borne antigens.
Area of Science:
- Immunology
- Hematology
- Cellular Biology
Background:
- Homozygous sickle cell disease (SS) is linked to increased infection risk, suggesting immune dysfunction.
- Cellular immunity plays a critical role in host defense against infections.
Purpose of the Study:
- To investigate cellular immunity in homozygous sickle cell disease (SS) patients.
- To compare immune responses between SS patients and healthy (AA) individuals.
Main Methods:
- Studied cellular immunity in 32 SS patients and 32 healthy AA subjects.
- Assessed T-cell proportions, lymphocyte proliferation (mitogen-induced), and in vivo interleukin-2 production.
- Evaluated the effect of autologous sera on lymphocyte activation.
Main Results:
- SS patients showed reduced T4 and T8 cell proportions but normal B-lymphocyte and other mitogen-induced proliferation.
- Pokeweed mitogen stimulation was enhanced in SS patients.
- Autologous SS sera significantly potentiated lymphocyte proliferation compared to AA sera, indicating serum-mediated effects.
Conclusions:
- Patients with sickle cell disease have functional abnormalities in cell-mediated immunity.
- Amplified lymphocyte activation by SS autologous sera suggests the presence of infectious or sickle cell-specific antigens in the serum.