TITLE

Blunting the response to endotoxin in healthy subjects: effects of various doses of intravenous fish oil

AUTHOR(S)
Pittet, Yann K.; Berger, Mette M.; Pluess, Thomas-Thi; Voirol, Pierre; Revelly, Jean-Pierre; Tappy, Luc; Chioléro, René L.
PUB. DATE
February 2010
SOURCE
Intensive Care Medicine;Feb2010, Vol. 36 Issue 2, p289
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
To test the dose response effect of infused fish oil (FO) rich in n-3 PUFAs on the inflammatory response to endotoxin (LPS) and on membrane incorporation of fatty acids in healthy subjects. Prospective, sequential investigation comparing three different FO doses. Three groups of male subjects aged 26.8 ± 3.2 years (BMI 22.5 ± 2.1). One of three FO doses (Omegaven®10%) as a slow infusion before LPS: 0.5 g/kg 1 day before LPS, 0.2 g/kg 1 day before, or 0.2 g/kg 2 h before. Temperature, hemodynamic variables, indirect calorimetry and blood samples (TNF-α, stress hormones) were collected. After LPS temperature, ACTH and TNF-α concentrations increased in the three groups: the responses were significantly blunted ( p < 0.0001) compared with the control group of the Pluess et al. trial. Cortisol was unchanged. Lowest plasma ACTH, TNF-α and temperature AUC values were observed after a single 0.2 g/kg dose of FO. EPA incorporation into platelet membranes was dose-dependent. Having previously shown that the response to LPS was reproducible, this study shows that three FO doses blunted it to various degrees. The 0.2 g/kg perfusion immediately before LPS was the most efficient in blunting the responses, suggesting LPS capture in addition to the systemic and membrane effects.
ACCESSION #
47626583

 

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