Abstract
Background
Immune cells and inflammatory mediators are released from the gastrointestinal tract into the mesenteric lymph during sepsis causing distant organ dysfunction. Recently, it was demonstrated that macrophages in the gut wall are controlled by the vagus nerve, the so-called cholinergic anti-inflammatory pathway.
Aim
This study aims to investigate whether an enteral diet with lipid prevents the activation of leukocytes in the gut wall.
Methods
Mesenteric lymph was obtained from rats, receiving an enteral infusion of glucose or glucose + lipid before and after lipopolysaccharide (LPS) injection. Immune cells in mesenteric lymph were analyzed with fluorescence-activated cell sorting before and after LPS injection. Mesenteric lymph leukocytes from rats receiving enteral glucose with or without lipid were stimulated in vitro with LPS and tumor necrosis factor (TNF)α was measured in the supernatant.
Results
The release of macrophages from the gut during sepsis was not significantly different in animals enterally treated with glucose or lipid. However, the release of TNFα from mesenteric lymph leukocytes after in vitro LPS stimulation was more than 3-fold higher in the glucose group compared to the lipid-treated group.
Conclusions
During sepsis, activated macrophages are released from the gut into mesenteric lymph. However, an enteral diet with lipid is able to suppress the inflammatory cytokine release from mesenteric lymph leukocytes.
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Acknowledgments
This work was supported by a grant from FORTÜNE 1843-0-0.
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Friederike Eisner and Petra Jacob contributed equally to this manuscript.
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Eisner, F., Jacob, P., Frick, JS. et al. Immunonutrition with Long-Chain Fatty Acids Prevents Activation of Macrophages in the Gut Wall. J Gastrointest Surg 15, 853–859 (2011). https://doi.org/10.1007/s11605-011-1431-z
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DOI: https://doi.org/10.1007/s11605-011-1431-z