Glutamine Administration after Sublethal Lower Limb Ischemia Reduces Inflammatory Reaction and Offers Organ Protection in Ischemia/Reperfusion Injury

Yao Ming Shih, Juey Ming Shih, Man Hui Pai, Yu Chen Hou, Chiu Li Yeh, Sung Ling Yeh

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Background: This study investigated the effects of intravenous glutamine (GLN) administration on the expression of adhesion molecules and inflammatory mediators in a mice model of hind limb ischemia/reperfusion (IR) injury. Methods: There were 3 IR groups and 1 normal control (NC) group. The NC group did not undergo the IR procedure. Mice in the IR groups underwent 90 minutes of limb ischemia followed by a variable period of reperfusion. Ischemia was performed by applying a 4.5-oz orthodontic rubber band to the left thigh. Mice in one IR group were sacrificed immediately after reperfusion. The other 2 IR groups were injected once with either 0.75 g GLN/kg body weight (G group) or an equal volume of saline (S group) via tail vein before reperfusion. Mice in the S and G groups were subdivided and sacrificed at 4 or 24 hours after reperfusion. Results: IR enhanced the inflammatory cytokine gene expressions in muscle. Also, plasma interleukin (IL)-6 levels, blood neutrophil percentage, and the adhesion molecule and chemokine receptors expressed by leukocytes were upregulated after reperfusion. The IR-induced muscle inflammatory mediator gene expressions, blood macrophage percentage, and plasma IL-6 concentration had declined at an early or a late phase of reperfusion when GLN was administered. Histologic findings also found that remote lung injury was attenuated during IR insult. Conclusions: A single dose of GLN administration immediately after sublethal lower limb ischemia reduces the inflammatory reaction locally and systemically; this may offer local and distant organ protection in hind limb IR injury.

Original languageEnglish
Pages (from-to)1122-1130
Number of pages9
JournalJournal of Parenteral and Enteral Nutrition
Volume40
Issue number8
DOIs
Publication statusPublished - Nov 1 2016

Keywords

  • adhesion molecule
  • glutamine
  • hind limb
  • inflammatory mediator
  • ischemia reperfusion injury

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Nutrition and Dietetics

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