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Related Experiment Videos

A method for chronic membrane plasmapheresis in the rat

D B Follette1, D Kerr, T J Nasca

  • 1Department of Medicine, Mercy Hospital of Pittsburgh, Pennsylvania 15219-5166.

Journal of Applied Physiology (Bethesda, Md. : 1985)
|December 1, 1993
PubMed
Summary

Researchers developed a new rat model for therapeutic apheresis (blood purification) to study its effects on diseases. This reliable technique effectively removed immunoglobulins, paving the way for further research into autoimmune and metabolic disorders.

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Area of Science:

  • Biomedical Engineering
  • Nephrology
  • Immunology

Background:

  • Therapeutic apheresis treats various human disorders, but its mechanisms remain unclear.
  • Effective long-term vascular access models are needed for apheresis research.

Purpose of the Study:

  • To develop a reliable technique for long-term vascular access in rats for repetitive plasmapheresis.
  • To evaluate the efficacy of this apheresis model in removing immunoglobulins.

Main Methods:

  • A miniaturized hollow-fiber membrane system was used to establish vascular access in rats.
  • Rats underwent repetitive plasmapheresis over 3- and 7-week periods.
  • Immunoglobulin G and M levels were measured before and after apheresis treatments.

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Main Results:

  • 100% survival rate and 93% successful completion of experimental periods.
  • Mean reduction of immunoglobulin G by 66.9% and immunoglobulin M by 61.0% after 28 treatments.
  • Demonstrated effective membrane filtration for immunoglobulin removal.

Conclusions:

  • The developed rat model provides reliable long-term vascular access for repetitive plasmapheresis.
  • This model is effective for studying apheresis mechanisms and can be applied to diseases like diabetes and inflammatory bowel disease.