Increased production of TNF-α and decreased levels of dienoic eicosanoids, IL-6 and IL-10 in mice fed menhaden oil and juniper oil diets in response to an intraperitoneal lethal dose of LPS

被引:21
作者
Chavali, SR
Weeks, CE
Zhong, WW
Forse, RA
机构
[1] Harvard Univ, Beth Israel Deaconess Med Ctr, Sch Med, Harvard Inst Med,Dept Surg, Boston, MA 02215 USA
[2] Novartis Nutr, St Louis Pk, MN 55416 USA
来源
PROSTAGLANDINS LEUKOTRIENES AND ESSENTIAL FATTY ACIDS | 1998年 / 59卷 / 02期
关键词
D O I
10.1016/S0952-3278(98)90086-2
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Eicosapentaenoic acid (EPA) and the non-methylene interrupted fatty acids (NMIFA) displace arachidonic acid (AA: 20:4 omega 6 -5,8,11,14) in the membrane phospholipids. Unlike EPA (20:5 omega 3 -5,8,11,14,17), the NMIFA (20:3 omega 6 -5,11,14 and 20:4 omega 3 -5,11,14,17) lacking the Delta-8 double bond are not substrates for the formation of eicosanoids. For 20 days, the mice were fed diets containing 5wt% dietary fats from various sources. The magnitudes in the production of eicosanoids and cytokines produced in response to an intraperitoneal injection of endotoxin in mice fed menhaden fish oil (MO) diets enriched with EPA were compared with those maintained on juniper oil (JO) containing NMIFA or on safflower oil (SO), a major source of the AA precursor, linoleic acid. The levels of PGE(2), 6-keto-PGF(1 alpha) and TXB2 were markedly lower (P < 0.01) in animals fed either MO or JO diets compared to the controls. The plasma levels of tumor necrosis factor (TNF)-alpha were significantly higher (P < 0.05) with a concomitant decrease of interleukin (IL)-6 and of IL-10 in mice fed MO or JO diets (P < 0.01) compared to those fed SO diet. These data suggest that the effects of consuming NMIFA of JO despite their inability to form eicosanoids are similar to those of feeding EPA which forms biologically active alternate metabolites.
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页码:89 / 93
页数:5
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