Lipid-enriched enteral nutrition controls the inflammatory response in murine Gram-negative sepsis

Critical Care Medicine
Tim LubbersJan Willem M Greve

Abstract

Controlling the inflammatory cascade during sepsis remains a major clinical challenge. Recently, it has become evident that the autonomic nervous system reduces inflammation through the vagus nerve. The current study investigates whether nutritional stimulation of the autonomic nervous system effectively attenuates the inflammatory response in murine Gram-negative sepsis. Controlled in vivo and ex vivo experimental study. Research laboratory of a university hospital. Male C57bl6 mice. Mice were intraperitoneally challenged with lipopolysaccharide derived from Escherichia coli. Before lipopolysaccharide administration, mice were fasted or enterally fed either lipid-rich nutrition or low-lipid nutrition. Antagonists to cholecystokinin receptors or nicotinic receptors were administered before lipopolysaccharide administration. Blood and tissue samples were collected at 90 mins. Mesenteric afferent discharge was determined in ex vivo preparations in response to both nutritional compositions. Both lipid-rich and low-lipid nutrition dose-dependently reduced lipopolysaccharide-induced tumor necrosis factor-α release (high dose: both 1.4 ± 0.4 ng/mL) compared with fasted mice (3.7 ± 0.8 ng/mL; p < .01). The anti-inflammatory effect of ...Continue Reading

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