Intestinal adaptation in short bowel syndrome

Area of Science:

• Gastroenterology
• Surgical Science
• Regenerative Medicine

Background:

• Short bowel syndrome (SBS) is a condition characterized by inadequate intestinal length, necessitating nutritional and hydration support.
• SBS commonly follows extensive intestinal resection, with adaptation influenced by remaining bowel anatomy and quantity.
• Post-resection, intestinal tissue undergoes significant morphologic and functional changes to compensate for lost function.

Purpose of the Study:

• To summarize the understanding of intestinal adaptation following surgical resection.
• To highlight the factors influencing adaptive potential in short bowel syndrome.
• To discuss the implications for current and future therapeutic strategies in intestinal rehabilitation.

Main Methods:

• Review of existing literature on short bowel syndrome and intestinal adaptation.
• Analysis of factors influencing morphologic and functional changes in the remaining intestine.
• Evaluation of the role of hormones, cytokines, and growth factors in adaptation.

Main Results:

• The amount of small bowel remaining is the primary determinant of adaptive potential.
• Significant adaptive changes are not observed in cases of extreme resection (end-jejunostomy).
• Multiple interactive factors, including nutrients and secretions, mediate intestinal adaptation.

Conclusions:

• Current understanding supports the use of supplemental hormones like growth hormone and glucagon-like peptide 2 in intestinal rehabilitation.
• Further research may lead to pharmacologic agents that enhance the innate adaptive response in SBS.
• Individualized treatment strategies are crucial, considering the extent of resection and remaining bowel.