Oral Glutamine Prevents Gut Mucosal Injury and Improves Mucosal Recovery Following Lipopolysaccharide Endotoxemia in a Rat

Igor Sukhotnik*, Modi Agam, Raanan Shamir, Naim Shehadeh, Michael Lurie, Arnold G. Coran, Eitan Shiloni, Jorge Mogilner

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Objective: To evaluate the effects of oral glutamine in preventing mucosal damage caused by lipopolysaccharide (LPS) endotoxemia in a rat. Methods: Male Sprague Dawley rats, weighing 250 to 280 g, were divided into three experimental groups: CONTR rats (Group A), LPS rats (Group B) were treated with lipopolysaccharide given I.P. at dose 10 mg/kg every 24 h (two injections), and LPS-GLN rats (Group C) were treated with oral glutamine given in drinking water (2%) 72 h before and following injection of LPS. Intestinal structural changes, enterocyte proliferation, and enterocyte apoptosis were determined 24 h after last LPS injection. Results: LPS rats demonstrated a significant decrease in bowel and mucosal weight in jejunum and ileum, mucosal DNA and protein in jejunum and ileum, and villus height and crypt depth in jejunum and ileum compared with sham animals. LPS rats also had a significantly greater Park injury score in jejunum and ileum, a lower cell proliferation index in jejunum and ileum, and higher apoptotic index in jejunum and ileum compared with control rats. LPS-GLN animals showed a significant increase in bowel weight in jejunum, mucosal weight in jejunum and ileum, mucosal DNA in jejunum and ileum, villus height in jejunum and ileum, and cell proliferation index compared with LPS animals. The Park injury score was significantly lower in LPS-GLN rats compared with LPS animals. Conclusions: Oral glutamine supplementation prevents mucosal injury and improves intestinal recovery after LPS endotoxemia in a rat.

Original languageEnglish
Pages (from-to)379-384
Number of pages6
JournalJournal of Surgical Research
Volume143
Issue number2
DOIs
StatePublished - Dec 2007
Externally publishedYes

Keywords

  • enterocyte apoptosis
  • enterocyte proliferation
  • glutamine
  • intestine
  • lipopolysaccharide
  • sepsis

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