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Malabsorption after small-bowel transplantation

H Ishii1, N Hashimoto, T Kitada

  • 1Second Department of Surgery, Hyogo College of Medicine, Japan.

Hepato-Gastroenterology
|June 1, 1993
PubMed
Summary
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Small intestinal transplantation for short-bowel syndrome reduces absorption. Intestinal denervation, not ischemic damage, is the primary cause of this impaired absorption in grafted bowels.

Area of Science:

  • Gastroenterology
  • Transplantation Surgery
  • Neurogastroenterology

Background:

  • Short-bowel syndrome often necessitates small intestinal transplantation.
  • Post-transplant absorptive capacity is reduced, attributed to ischemia and denervation.

Purpose of the Study:

  • To differentiate the roles of ischemia and denervation in post-small intestinal transplant absorptive dysfunction.
  • To identify the primary factor contributing to reduced graft function.

Main Methods:

  • Comparison of three mongrel dog groups: sham-operated, denervation, and autotransplantation.
  • Assessment of D-xylose absorption and tissue levels of substance P and ATP at 4-5 weeks post-operation.

Main Results:

  • Significant D-xylose absorption reduction in denervation and autotransplantation groups.

Related Experiment Videos

  • Elevated substance P levels in denervation and autotransplantation groups.
  • Similar ATP levels across all groups, suggesting reversible ischemic damage.

    • Conclusions:

    • Intestinal denervation is the major contributor to impaired absorption after small intestinal autotransplantation.
    • Perioperative ischemic damage appears to be reversible.
    • Understanding denervation's role is crucial for improving transplant outcomes.