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Related Experiment Videos

Fibrin configuration on glass led to decrease of neutrophil adherence in systemic lupus erythematosus.

S W Huang1, E J Ruley

  • 1Department of Pediatrics, University of Maryland, Baltimore 21201.

Thrombosis Research
|March 15, 1988
PubMed
Summary

Patients with systemic lupus erythematosus (SLE) exhibit significantly low neutrophil adherence to glass, potentially linked to altered fibrin formation and increased thrombotic risk. This finding aids in understanding SLE complications.

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Area of Science:

  • Hematology
  • Immunology
  • Rheumatology

Background:

  • Neutrophil adherence is crucial in inflammatory and immune responses.
  • Systemic lupus erythematosus (SLE) and juvenile rheumatoid arthritis (JRA) are autoimmune diseases with complex pathologies.
  • Previous research established an in vitro assay for neutrophil adherence post-blood clotting.

Purpose of the Study:

  • To compare neutrophil adherence to glass in patients with SLE and JRA against normal controls.
  • To investigate the relationship between neutrophil adherence, disease activity, and fibrin morphology in SLE.
  • To explore potential mechanisms underlying thrombotic complications in active SLE.

Main Methods:

  • Utilized an established in vitro assay measuring neutrophil adherence to glass after blood clotting.

Related Experiment Videos

  • Compared adherence levels in patients with active SLE, JRA, and healthy controls.
  • Conducted a 2-year follow-up of SLE patients, monitoring adherence during disease relapses.
  • Examined fibrin morphology on glass surfaces using scanning electron microscopy (SEM).

    • Main Results:

    • 100% of SLE patients (33/33) and 5.7% of JRA patients (2/35) showed significantly reduced neutrophil adherence (<25% of normal).
    • Consistently low neutrophil adherence was observed in SLE patients during disease relapses over a 2-year follow-up.
    • SEM revealed distinct fibrin configurations on glass surfaces between active SLE patients and normal controls.

    Conclusions:

    • Reduced neutrophil adherence in SLE patients correlates with altered fibrin configurations, likely due to the in vitro contact system of coagulation.
    • These findings suggest a potential link between altered neutrophil adherence, fibrin morphology, and the increased thrombotic complications observed in active SLE.