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Related Experiment Videos

Relationship between immune complex and total hemolytic complement in endolymphatic hydrops

F Gutierrez1, P M Moreno, M Sainz

  • 1Hospital Universitario, Departamento de Bioquimica y Biologia Molecular, Granada, Spain.

The Laryngoscope
|December 1, 1994
PubMed
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Meniere's disease may involve immune system dysfunction. Patients with endolymphatic hydrops show elevated immune complexes and reduced complement activity, suggesting an immune-mediated cause for this inner ear disorder.

Area of Science:

  • Immunology
  • Otolaryngology
  • Internal Medicine

Background:

  • Meniere's disease is an inner ear disorder characterized by endolymphatic hydrops.
  • The potential role of the immune system and immune disorders in Meniere's disease is under investigation.
  • Immunoglobulin G (IgG) and complement presence in endolymphatic fluid suggests a possible immune complex involvement.

Purpose of the Study:

  • To investigate the relationship between immune system markers and endolymphatic hydrops in Meniere's disease.
  • To determine if circulating immune complexes (CIC) and complement activity (CH50) are altered in patients with endolymphatic hydrops.

Main Methods:

  • Measurement of circulating immune complex (CIC) levels, specifically IgG-based CIC.
  • Assay of functional complement activity (CH50).

Related Experiment Videos

  • Analysis of peripheral blood lymphocyte subpopulations, including B cells, T-helper cells, T-suppressor cells, and natural killer (NK) cells.

    • Main Results:

    • Patients with endolymphatic hydrops exhibited elevated levels of circulating immune complex (CIC) of IgG (24.80 micrograms/mL).
    • Functional complement activity (CH50) levels were significantly lower in patients (249.7 HU) compared to controls.
    • A positive correlation was observed between circulating CIC and CH50 levels.
    • Elevated levels of Immunoglobulin G (IgG), Immunoglobulin M (IgM), and B lymphocytes were noted, while T-helper, T-suppressor, and NK cell subpopulations remained unchanged.

    Conclusions:

    • The findings suggest that immune complex formation and complement activation may play a role in the pathogenesis of endolymphatic hydrops in Meniere's disease.
    • Elevated IgG CIC and reduced CH50 levels in patients indicate a potential immune-mediated mechanism.
    • Further research is warranted to elucidate the precise immune pathways involved in Meniere's disease.