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A Novel Clinical Grade Isolation Method for Human Kidney Perivascular Stromal Cells
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Cell therapy in kidney failure.

H D Humes1, A J Funke, D A Buffington

  • 1Department of Internal Medicine, 3101 Taubman Center, University of Michigan Health System, 1500 East Medical Center Drive, Ann Arbor, MI, 48109-0368, U.S.A..

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Summary
This summary is machine-generated.

A novel renal tubule assist device (RAD) using porcine cells shows promise for acute renal failure (ARF) therapy. This bioartificial kidney aims to restore metabolic functions lost in current renal replacement therapies.

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Area of Science:

  • Biomedical Engineering
  • Nephrology
  • Regenerative Medicine

Background:

  • Acute renal failure (ARF) has a high mortality rate (>50%) despite current renal replacement therapies.
  • Existing therapies primarily replace kidney filtration, neglecting crucial cellular metabolic functions.
  • Restoring these metabolic functions is key to improving ARF treatment outcomes.

Purpose of the Study:

  • To develop and evaluate a renal tubule assist device (RAD) for extracorporeal use in ARF.
  • To assess the RAD's ability to replicate renal metabolic and endocrine functions.
  • To investigate the RAD's potential to enhance current ARF management strategies.

Main Methods:

  • Development of a multifiber bioreactor containing porcine renal proximal tubule cells.
  • Integration of the RAD into a continuous hemoperfusion circuit with a hemofilter.
  • In vitro testing of cellular transport, metabolic, and endocrine functions.
  • In vivo evaluation in uremic dogs to assess device tolerance and function.

Main Results:

  • The RAD demonstrated differentiated renal transport, metabolic, and endocrine properties in vitro.
  • Device functions were responsive to physiological regulatory parameters.
  • The RAD tolerated a uremic environment and exhibited reabsorptive, metabolic, and endocrine activity in dogs.

Conclusions:

  • The renal tubule assist device (RAD) shows potential as a bioartificial kidney to supplement current ARF therapies.
  • The RAD's ability to restore metabolic functions offers a novel approach to treating ARF.
  • Pilot human trials are planned to further validate the RAD's efficacy in ARF patients.