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Related Experiment Video

Updated: Jan 4, 2026

Functional Assessment of Intestinal Permeability and Neutrophil Transepithelial Migration in Mice using a Standardized Intestinal Loop Model
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Optimization of In-Continuity Spring-Mediated Intestinal Lengthening.

Genia Dubrovsky1, Jordan S Taylor2, Anne-Laure Thomas2

  • 1Division of Pediatric Surgery, Department of Surgery, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA.

Journal of Pediatric Surgery
|November 3, 2019
PubMed
Summary

Optimizing spring-mediated intestinal lengthening in pigs showed a 50% plication achieved a 2.7-fold increase. Springs safely passed, avoiding removal surgery, offering hope for short bowel syndrome therapies.

Keywords:
Distraction enterogenesisPlicationShort bowel syndromeSpring-mediated lengthening

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Area of Science:

  • Gastroenterology
  • Surgical Innovation
  • Regenerative Medicine

Background:

  • Spring-mediated intestinal lengthening is a promising technique for increasing bowel length.
  • Previous studies have demonstrated significant length increases in animal models.
  • Optimization of this method is crucial for clinical application.

Purpose of the Study:

  • To optimize spring-mediated intestinal lengthening by evaluating different degrees of intestinal plication.
  • To assess the safety and efficacy of dissolvable sutures for spring fixation and passage.
  • To determine the optimal lumen reduction for maximal intestinal lengthening.

Main Methods:

  • Juvenile mini-Yucatan pigs underwent laparotomy for spring implantation.
  • Intestinal plication was performed at varying degrees (10% and 50%) to narrow the lumen.
  • Dissolvable sutures were used in some experiments to facilitate spontaneous spring passage.

Main Results:

  • A 50% plication resulted in a significant 2.7-fold increase in intestinal length (p<0.05).
  • 10% plication yielded a 1.3-fold increase in length.
  • The majority of springs passed spontaneously within two months, and histological analysis confirmed significant intestinal growth.

Conclusions:

  • A 50% reduction in intestinal lumen diameter is optimal for spring-mediated lengthening.
  • Spontaneous spring passage avoids the need for secondary surgical removal.
  • These findings support the development of spring-mediated therapies for short bowel syndrome.