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Absence of complement receptor type 3 and lymphocyte function antigen 1 causing deficient phagocyte and lymphocyte
M M Manzionna1, R A Seger, V Wahn
1Department of Paediatrics, Division of Immunology, Zürich, Switzerland.
European Journal of Pediatrics
|October 1, 1988
Summary
This study details a patient with recurrent infections due to a severe deficiency in complement receptor type 3 and lymphocyte function antigen 1, impacting immune cell adhesion and function.
Area of Science:
- Immunology
- Cell Biology
Background:
- Recurrent infections and impaired neutrophil function can indicate primary immunodeficiency.
- Defects in cell surface receptors are critical in immune cell function.
Observation:
- A patient presented with delayed umbilical cord detachment, recurrent bacterial infections, and failure to form pus despite high white blood cell counts.
- Immunofluorescence revealed a severe deficiency in complement receptor type 3 (CR3) and lymphocyte function antigen 1 (LFA-1) on immune cells.
Findings:
- The observed membrane antigen defects led to impaired neutrophil adhesion, migration, and reduced chemiluminescence and superoxide generation in response to particulate stimuli.
- Lymphocytes showed abolished natural killer cell activity and deficient antibody responses to pertussis and tetanus antigens.
Implications:
- This case highlights the crucial role of CR3 and LFA-1 in immune cell adhesion and function.
- Understanding these defects aids in diagnosing and managing severe congenital immune disorders.