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Related Experiment Videos

Antibody-based immunoadsorption as a therapeutic means

A du Moulin1, J Müller-Derlich, F Bieber

  • 1Baxter Deutschland GmbH, Unterschleissheim, BRD.

Blood Purification
|January 1, 1993
PubMed
Summary

Immunoapheresis effectively removes low-density lipoprotein (LDL) and immunoglobulin G (IgG) from patient plasma. This apheresis therapy significantly lowers LDL cholesterol and reduces plasma viscosity, with no observed adverse reactions.

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Area of Science:

  • Immunology
  • Cardiovascular Medicine
  • Nephrology

Background:

  • Familial hypercholesterolemia is a genetic disorder leading to high LDL cholesterol levels.
  • Immunoapheresis is a therapeutic apheresis technique that uses antibodies to remove specific molecules from blood.
  • High levels of IgG can be associated with autoimmune diseases and organ transplant rejection.

Purpose of the Study:

  • To evaluate the efficacy and safety of immunoapheresis for LDL removal in familial hypercholesterolemic patients.
  • To assess the potential of immunoapheresis for IgG depletion in patients with high panel reactivity.
  • To investigate the long-term development of anti-column antibodies.

Main Methods:

  • Polyclonal antibodies against LDL coupled to Sepharose CL-4B were used for LDL apheresis.

Related Experiment Videos

  • ELISA was employed to monitor the development of human antisheep antibodies over 5 years.
  • Immunoapheresis columns with antihuman IgG antibodies were tested in vitro for IgG depletion.

    • Main Results:

    • A single LDL apheresis treatment lowered LDL cholesterol by over 60% and plasma viscosity by 10%.
    • Human antisheep antibody levels showed a slight increase, plateauing within the first year, with no clinical adverse reactions.
    • In vitro studies demonstrated a 95% IgG depletion and a reduction in panel reactivity from 91% to 25%.

    Conclusions:

    • Immunoapheresis is a safe and effective treatment for lowering LDL cholesterol in familial hypercholesterolemia.
    • The technique shows promise for IgG depletion, aiding in organ transplantation and managing autoimmune diseases.
    • Immunoapheresis is a versatile therapeutic option with potential applications in various clinical settings.