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Tissue Engineering of the Intestine in a Murine Model
Published on: December 1, 2012
Spiral intestinal lengthening and tailoring - first in vivo study
Tamas Cserni1, Garbriella Varga, Daniel Erces
1Department of Pediatric Surgery, Josa Andras Hospital Nyíregyháza, Teaching Hospital of Medical Health Science Centre University of Debrecen, Hungary.
Journal of Pediatric Surgery
|October 1, 2013
Summary
Spiral Intestinal Lengthening and Tailoring (SILT) successfully lengthened and tailored intestines in a minipig model, showing viability but highlighting risks of severe lumen reduction. This surgical technique offers a potential new option for short bowel syndrome treatment.
Area of Science:
- Surgical Innovation
- Gastrointestinal Surgery
- Animal Models in Research
Background:
- Short bowel syndrome (SBS) presents a significant clinical challenge, necessitating novel surgical interventions.
- Existing surgical techniques like the Bianchi procedure and serial transverse enteroplasty (STEP) have limitations.
- Spiral Intestinal Lengthening and Tailoring (SILT) is a novel technique with potential advantages in mesenteric manipulation and muscle fiber orientation.
Purpose of the Study:
- To evaluate the feasibility and outcomes of the Spiral Intestinal Lengthening and Tailoring (SILT) procedure.
- To assess the viability and histological changes in lengthened intestinal segments in a surviving animal model.
- To compare SILT with existing surgical methods for intestinal lengthening in short bowel syndrome.
Main Methods:
- Six Vietnamese minipigs underwent intestinal dilation via interposition of a reversed segment.
- The dilated segment was then resected, and the intestinal wall was cut spirally (45°-60°) for longitudinal lengthening and sutured.
- Histological analyses included Hematoxylin and eosin, picrosirius, and immunohistochemistry for neuronal and cellular markers.
Main Results:
- Mean intestinal lengthening achieved was 74.8% ± 29.5%, with a mean lumen reduction (tailoring) of 56.25% ± 18.8%.
- No immediate surgical complications like necrosis or perforation occurred; 4 out of 6 animals recovered with viable segments.
- Two animals experienced bowel obstruction due to excessive tailoring (>70% lumen reduction), indicating a critical limit for this aspect of the procedure.
Conclusions:
- Spiral Intestinal Lengthening and Tailoring (SILT) demonstrates macroscopic and microscopic viability of the lengthened bowel.
- SILT offers a promising alternative or adjunct to current intestinal lengthening techniques for short bowel syndrome.
- Careful consideration of the tailoring component is crucial to avoid complications such as bowel obstruction.
