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Related Experiment Videos

Malnutrition impairs postresection intestinal adaptation.

D R Cronk1, D C Ferguson, J S Thompson

  • 1Department of Surgery, University of Nebraska Medical Center, Omaha 68198-3280, USA.

JPEN. Journal of Parenteral and Enteral Nutrition
|April 20, 2000
PubMed
Summary
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Reduced enteral nutrition impairs intestinal adaptation after resection. A 25% nutrient reduction decreases enterocyte production and increases apoptosis, impacting gut healing.

Area of Science:

  • Gastroenterology
  • Surgical Research
  • Nutritional Science

Background:

  • Postresection intestinal adaptation is crucial for recovery and influenced by nutrient availability.
  • Total parenteral nutrition (TPN) alone does not fully support adaptation when luminal nutrients are absent.
  • The precise mechanisms by which reduced enteral intake affects adaptation, particularly in malnourished states, require further elucidation.

Purpose of the Study:

  • To investigate the impact of reduced enteral nutrition on intestinal adaptation, including enterocyte production and apoptosis, following 50% proximal resection in a rat model.
  • To determine the role of nutrient quantity and route of intake in post-surgical intestinal adaptation.

Main Methods:

  • Lewis rats underwent either 50% proximal resection (n=12) or transection (n=6).

Related Experiment Videos

  • Resected animals were divided into two groups: ad libitum intake (n=6) and 75% of ad libitum intake (n=6).
  • Nutritional status and intestinal adaptation markers were assessed 14 days post-surgery.

    • Main Results:

    • Animals with 75% intake exhibited decreased body weight and serum albumin compared to controls.
    • Intestinal weight and diameter increased significantly in resected animals with normal intake versus transection and malnourished groups.
    • Reduced enteral intake led to lower crypt cell production rates, and increased apoptosis in normally nourished resected animals, correlating with villus height.

    Conclusions:

    • A 25% reduction in enteral nutrients significantly impairs intestinal adaptation post-resection.
    • Both the route and quantity of nutrient delivery are critical factors in post-surgical intestinal adaptation.
    • Reduced enteral intake and malnutrition decrease enterocyte production and apoptosis, with lower apoptosis reflecting reduced cell numbers rather than a compensatory mechanism.