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Related Experiment Videos

Intestinal flora and nutrient absorption after intestinal resection

J S Thompson1, E M Quigley

  • 1The Surgical Service, Omaha Veterans Affairs Medical Center, and the Department of Surgery, Section of Gastroenterology, University of Nebraska Medical Center, Omaha, NE 68198-3280, USA.

Journal of Gastrointestinal Surgery : Official Journal of the Society for Surgery of the Alimentary Tract
|December 3, 1998
PubMed
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Extensive intestinal resection in dogs significantly increased ileal bacteria, but this bacterial overgrowth did not affect nutrient absorption. The colon

Area of Science:

  • Gastroenterology
  • Microbiology
  • Surgical Research

Background:

  • Intestinal resection alters surface area, motor function, and luminal conditions, potentially impacting bacterial growth.
  • Understanding the effects of extensive intestinal resection on gut microbiota and nutrient absorption is crucial for patient recovery.

Purpose of the Study:

  • To investigate the impact of 75% proximal intestinal resection on small intestinal bacterial flora in dogs.
  • To assess the effect of this resection on nutrient absorption and overall nutritional status.

Main Methods:

  • Ten dogs underwent 75% proximal intestinal resection; controls underwent transection alone.
  • Ileal aspirates were cultured to quantify bacterial flora at 12 and 40 weeks post-surgery.
  • Nutritional status and nutrient absorption were monitored every 4 weeks.

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Main Results:

  • Resected dogs showed significantly increased total and anaerobic ileal bacteria at 40 weeks.
  • Carbohydrate and fat absorption decreased post-resection, though absorption efficiency for carbohydrates was maintained.
  • Increased bacterial counts did not correlate with altered nutrient absorption or excretion.

Conclusions:

  • Significant proximal intestinal resection leads to increased aerobic and anaerobic bacteria in the ileal remnant.
  • Small intestinal bacterial overgrowth post-resection does not appear to directly impact nutrient absorption.
  • Colonic bacteria may play a more significant role in nutrient absorption following extensive small intestine resection.