High-lipid enteral nutrition could partially mitigate inflammation but not lung injury in hemorrhagic shock rats

Bor Gang Wu, Tsui Chin Peng, Pei Shan Tsai, Tao Yeuan Wang, Mei Jy Jeng, Chun Jen Huang

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Background: Loss of gut barrier function is crucial in mediating lung injury induced by hemorrhagic shock/resuscitation (HS). High-lipid enteral nutrition (HL) can preserve gut barrier function. We hypothesized that HL could also mitigate HS-induced lung injury. Materials and methods: Forty-eight adult male rats were randomly assigned to one of four experimental groups: HS; HS-HL; Sham; Sham-HL. HS was induced by blood drawing and mean blood pressure was maintained at 40-45 mmHg for 120 min followed by resuscitation with re-infusion of exsanguinated blood/saline mixtures. HL gavage was performed at 45 min before blood drawing and at the end of resuscitation. Results: Intestinal permeability of the HS group was significantly higher than that of the Sham group (P <0.001). Pulmonary concentrations of malondialdehyde (lipid peroxidation) and inflammatory molecules, including prostaglandin E2, tumor necrosis factor-α, interleukin-6, and macrophage inflammatory protein-2, of the HS group were significantly higher than those of the Sham group. Histologic analyses, including histopathology, wet/dry weight ratio, and neutrophil infiltration revealed moderate lung injury in the HS group. In contrast, intestinal permeability (P <0.001) and pulmonary concentrations of tumor necrosis factor-α and macrophage inflammatory protein-2 (P = 0.021 and 0.01) of the HS-HL group were significantly lower than those of the HS group. However, pulmonary concentrations of malondialdehyde, prostaglandin E 2, and interleukin-6 of the HS-HL and HS groups were comparable. Moreover, histologic analyses also revealed moderate lung injury in the HS-HL group. Conclusions: High-lipid enteral nutrition significantly mitigated gut barrier loss and partially mitigated lung inflammation but not oxidation and lung injury in hemorrhagic shock/resuscitation rats.

Original languageEnglish
Pages (from-to)997-1005
Number of pages9
JournalJournal of Surgical Research
Volume184
Issue number2
DOIs
Publication statusPublished - Oct 2013

Keywords

  • Acute lung injury
  • Hemorrhagic shock
  • High-lipid enteral nutrition
  • Inflammatory response
  • Oxidative stress
  • Rat
  • Resuscitation

ASJC Scopus subject areas

  • Surgery

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