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Innovative Strategies for Organ Preservation in Heart Transplantation: Uniform Cooling Preservation and Ex-situ Normothermic Perfusion
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Creatine-loading preserves intestinal barrier function during organ preservation.

Konra Mueller1, Matthew S Kokotilo2, Jodi M Carter3

  • 1Chinook Regional Hospital Laboratory, 960 19 St South, Lethbridge, Alberta, Canada.

Cryobiology
|August 5, 2018
PubMed
Summary
This summary is machine-generated.

Creatine supplementation enhances intestinal preservation during cold storage by improving energy levels and mucosal integrity. This novel approach significantly reduces tissue damage and preserves function, offering a promising strategy for organ transplantation.

Keywords:
Cold storageCreatine loadingIntestinal-specific nutrientsIntraluminal preservation solution

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Area of Science:

  • Organ preservation
  • Gastroenterology
  • Biochemistry

Background:

  • Low-temperature organ storage presents challenges in maintaining intestinal viability, particularly concerning energy depletion and mucosal damage.
  • Creatine-loading is a proven method to boost cellular energy reserves, offering potential for enhanced organ preservation.

Purpose of the Study:

  • To investigate the efficacy of creatine-loading in an intraluminal preservation solution for maintaining intestinal structure and function during cold storage.

Main Methods:

  • Rodent models were used with continuous perfusion or single-flush preservation solutions supplemented with 50 mM creatine.
  • Measurements included energy metabolites (creatine phosphate, ATP), oxidative stress markers, barrier function (permeability, transepithelial resistance), and histological assessment.

Main Results:

  • Creatine supplementation significantly improved energy levels (creatine phosphate, ATP, Energy Charge) and ATP/AMP ratio post-storage.
  • Creatine-treated tissues showed reduced oxidative injury, maintained barrier function, and superior histological integrity compared to controls.
  • After 10 hours, creatine-treated tissues exhibited preserved permeability and transepithelial resistance, unlike control tissues.

Conclusions:

  • Creatine supplementation of an intraluminal preservation solution is a feasible and effective strategy for preserving intestinal mucosa.
  • This approach mitigates ischemia-induced damage, maintaining mucosal structure and function during extended cold storage.