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Lack of Enteral Nutrition Delays Nuclear Factor Kappa B Activation in Peritoneal Exudative Cells in a Murine Glycogen-Induced Peritonitis Model
Background: Early enteral nutrition is associated with a lower incidence of intraabdominal abscess in severely injured patients than parenteral nutrition (PN). We explored the underlying mechanisms by examining the influence of nutrition route on nuclear factor κB (NFκB) activation in peritoneal exu...
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Published in: | JPEN. Journal of parenteral and enteral nutrition 2006-05, Vol.30 (3), p.179-185 |
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Main Authors: | , , , , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | Background: Early enteral nutrition is associated with
a lower incidence of intraabdominal abscess in severely injured patients than
parenteral nutrition (PN). We explored the underlying mechanisms by examining the
influence of nutrition route on nuclear factor κB (NFκB) activation in peritoneal
exudative cells (PECs) and peritoneal cytokine levels. Methods: Thirty male Institute Cancer Research mice were randomized to
chow (n = 10), IV PN (n = 10), or intragastric (IG) PN (n = 10) and fed for 5 days.
PECs were harvested at 2 or 4 hours after intraperitoneal injection of 2 mL of 1%
glycogen. Intranuclear NFκB activity in PECs was examined by laser scanning
cytometry. Cytokine (tumor necrosis factor-α [TNF-α], macrophage inflammatory
protein-2 [MIP-2], interleukin-10 [IL-10]) levels in peritoneal lavaged fluid were
determined by enzyme-linked immunosorbent assay. Results: Intranuclear NFκB at 2 hours was significantly higher in the
chow and IG-PN groups than in the IV-PN group. TNF-α and IL-10 levels of the chow
group were significantly higher than those of IV-PN mice at 2 hours, whereas those of
IG-PN mice were midway between those of the chow and IV-PN groups. MIP-2 was
significantly higher in the chow group than in the IG-PN and IV-PN mice at 2 hours.
TNF-α levels correlated positively with intranuclear NFκB activity in PECs. Conclusions: Enteral nutrition may improve peritoneal
defense by preserving early NFκB activation in PECs and cytokine responses.
We clarified an important mechanism for impaired peritoneal defense during lack of
enteral nutrition. Parenterally fed mice showed delay of NFκB activation in
peritoneal exudative cells and cytokine responses in glycogen-induced peritonitis, as
compared with enterally fed animals. |
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ISSN: | 0148-6071 1941-2444 |
DOI: | 10.1177/0148607106030003179 |