Original Article

Pediatric Surgery International

, Volume 27, Issue 2, pp 211-216

First online:

Nutritional supplementation with transforming growth factor-beta inhibits intestinal adaptation after massive small bowel resection in a rat

  • Igor SukhotnikAffiliated withLaboratory of Intestinal Adaptation and Recovery, The Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of TechnologyDepartment of Pediatric Surgery B, Bnai Zion Medical Center Email author 
  • , Jorge G. MogilnerAffiliated withDepartment of Pediatric Surgery B, Bnai Zion Medical Center
  • , Shani Ben LuluAffiliated withLaboratory of Intestinal Adaptation and Recovery, The Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology
  • , Yulia BashenkoAffiliated withLaboratory of Intestinal Adaptation and Recovery, The Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology
  • , Ron ShaoulAffiliated withPediatric Gastroenterology and Nutrition Unit, Meyer Children’s Hospital, Rambam Medical Center
  • , Elena ChemodanovAffiliated withDepartment of Pathology, Bnai Zion Medical Center
  • , Arnold G. CoranAffiliated withSection of Pediatric Surgery, C.S. Mott Children’s Hospital and University of Michigan Medical School

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Abstract

Introduction

Transforming growth factor beta (TGF-β) has been shown to affect epithelial cell differentiation and proliferation through epithelial-mesenchymal and epithelial-immune cell interaction. In the present study, we evaluated the effect of TGF-β2-enriched polymeric diet (Modulen) on enterocyte turnover in a rat model of short bowel syndrome (SBS).

Methods

Male rats were divided into four groups: Sham rats and Sham-TGF-β rats underwent bowel transection, and were treated with TGF-β from the 4th postoperative day, SBS rats underwent a 75% bowel resection, and SBS-TGF-β rats underwent bowel resection and were treated with TGF-β-enriched diet similar to Group B. Parameters of intestinal adaptation, enterocyte proliferation and apoptosis were determined on day 15. Real-time PCR was used to determine Bax and Bcl-2 mRNA expression.

Results

Treatment of SBS animals with TGF-β2 supplemented diet led to a significant decrease (vs. SBS rats) in bowel weight in ileum (18%, P < 0.05), mucosal DNA content in jejunum (threefold decrease, P < 0.05) and ileum (2.5-fold decrease, P < 0.05), and mucosal protein in jejunum (twofold decrease, P < 0.05) compared to SBS-untreated animals (Group B). Treatment with TGF-β resulted in a mild decrease in enterocyte proliferation in jejunum (25%, P < 0.05) and ileum (18%, P < 0.05). A decreased cell apoptosis in the SBS-TGF-β group was accompanied by a decreased Bax and increased Bcl-2 mRNA expression.

Conclusions

In a rat model of SBS, dietary TGF-β inhibits intestinal adaptation. Decreased enterocyte proliferation is responsible for this effect.

Keywords

Short bowel syndrome Intestinal adaptation Transforming growth factor beta Enterocyte Turnover