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Induction of Intestinal Graft-versus-host Disease and Its Mini-endoscopic Assessment in Live Mice
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Intestinal Donors in Early Infancy: Are Immune-mediated Complications More Problematic?

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Grafts from infants younger than 6 months for intestinal transplantation are associated with higher rates of severe immunological complications, including rejection and graft-versus-host disease. These complications led to death in a significant portion of recipients in this early infancy group.

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Area of Science:

  • Pediatric surgery
  • Transplantation immunology
  • Gastroenterology

Background:

  • Pediatric intestinal transplantation faces donor size limitations.
  • Grafts from very young donors (≤6 months) are an option but lack data on immunological outcomes.
  • This study addresses the scarcity of literature on post-transplant immunological complications in infants receiving intestinal grafts.

Purpose of the Study:

  • To evaluate the outcomes of intestine-containing grafts from very young donors (≤6 months).
  • To compare immunological complications across different infant donor age groups.
  • To inform clinical practice regarding the use of infant intestinal grafts.

Main Methods:

  • Retrospective single-center study of pediatric intestinal transplants (1993-2020).
  • Participants categorized into Early Infancy (EI, ≤6 months), Late Infancy (LI, 7-12 months), and Early Childhood (EC, 13-36 months) donor groups.
  • Primary outcome: clinically significant immunological complications (severe rejection/graft-versus-host disease).

Main Results:

  • 35 of 105 pediatric intestinal transplants used donors ≤36 months.
  • Immunological complications were most frequent in the EI group (80%), followed by LI (56%) and EC (33%).
  • Three of five recipients in the EI group died due to immunological complications.

Conclusions:

  • Grafts from donors within the first 6 months of life are linked to increased immunological complications.
  • Caution is advised when utilizing intestinal grafts from donors aged 6 months or younger.
  • Further research may be needed to mitigate risks associated with early infant intestinal grafts.