Effect of dietary alpha-linolenate/linoleate balance on lipopolysaccharide-induced tumor necrosis factor production in mouse macrophages.
We examined the effect of dietary alpha-linolenate (18:3n-3)/linoleate (18:2n-6) balance on lipopolysaccharide (LPS)-induced tumor necrosis factor (TNF) production in mouse macrophages. Resident and casein-induced peritoneal macrophages from mice fed a high alpha-linolenate diet produced a higher amount of TNF than in the high linoleate diet group. However, TNF production was not affected by the dietary alpha-linolenate/linoleate balance when thioglycollate- and complete Freund's adjuvant-induced macrophages were stimulated with LPS. Serum TNF levels of mice intraperitoneally injected with LPS was also higher in the high alpha-linolenate group than in the high linoleate group. These diets affected the n-3/n-6 ratios of 20 and 22 carbon highly unsaturated fatty acids in macrophage lipids. Thus, the dietary enrichment with alpha-linolenate was found to enhance TNF production of macrophages isolated under limited conditions.
Watanabe
S
S
Faculty of Pharmaceutical Sciences, Nagoya City University, Japan.
Hayashi
H
H
Onozaki
K
K
Okuyama
H
H
D000818:Animals; D002364:Caseins / Q000494:pharmacology; D002452:Cell Count / Q000187:drug effects; D004042:Dietary Fats, Unsaturated / Q000008:administration & dosage / Q000378:metabolism; D005620:Freund's Adjuvant / Q000494:pharmacology; D008041:Linoleic Acids / Q000008:administration & dosage / Q000494:pharmacology*; D008042:Linolenic Acids / Q000008:administration & dosage / Q000494:pharmacology*; D008070:Lipopolysaccharides / Q000494:pharmacology*; D008264:Macrophages / Q000187:drug effects / Q000378:metabolism*; D008297:Male; D051379:Mice; D008813:Mice, Inbred ICR; D010529:Peritoneal Cavity / Q000166:cytology; D013864:Thioglycolates / Q000494:pharmacology; D014409:Tumor Necrosis Factor-alpha / Q000096:biosynthesis*
D002364:Caseins; D004042:Dietary Fats, Unsaturated; D008041:Linoleic Acids; D008042:Linolenic Acids; D008070:Lipopolysaccharides; D013864:Thioglycolates; D014409:Tumor Necrosis Factor-alpha; D005620:Freund's Adjuvant