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Related Experiment Videos

Development of an automated computer-controlled islet isolation system

J R Lakey1, G L Warnock, M Brierton

  • 1Department of Surgery, University of Alberta, Edmonton, Canada.

Cell Transplantation
|January 1, 1997
PubMed
Summary
This summary is machine-generated.

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An automated cell extraction system (ACES) effectively isolates islets of Langerhans for potential type 1 diabetes treatment. This automated system matches traditional methods in islet yield, viability, and function, offering improved control and sterile processing.

Area of Science:

  • Endocrinology and Metabolism
  • Surgical Technology
  • Biomedical Engineering

Background:

  • Clinical islet transplantation is a promising treatment for type 1 diabetes.
  • Current islet isolation methods require significant improvements for reliability and effectiveness.
  • Pancreatic tissue dissociation and islet recombination are critical steps in islet isolation.

Purpose of the Study:

  • To develop and evaluate an automated cell extraction system (ACES) for islet isolation.
  • To compare the efficacy of ACES with the standard Ricordi-based protocol for canine islet isolation.
  • To assess islet yield, viability, and in vivo function following isolation by ACES.

Main Methods:

  • Developed an automated cell extraction system (ACES) with computer control and novel tissue recombination.

Related Experiment Videos

  • Performed 12 consecutive canine islet isolations, comparing ACES (n=6) with the standard protocol (n=6).
  • Assessed islet equivalents (IE) recovered, post-Ficoll purification yields, insulin secretion, and in vivo function in diabetic mice.

    • Main Results:

    • ACES demonstrated comparable islet recovery (99 x 10^3 IE vs. 90.8 x 10^3 IE) and post-purification yields (54.7 x 10^3 IE vs. 56.2 x 10^3 IE) to the standard protocol.
    • Islet viability was equivalent, with similar insulin secretion fold-increases (8.8x for ACES vs. 8.6x for standard).
    • In vivo function was comparable, with successful long-term graft survival in diabetic mice for both groups (5/7 ACES vs. 5/6 standard).

    Conclusions:

    • The automated cell extraction system (ACES) provides effective canine islet recovery without compromising yield or viability.
    • ACES offers advantages including computer control, sterile disposable components, and a novel tissue recombination method.
    • This automated system represents a significant advancement towards reliable islet isolation for clinical transplantation.