Abstract
The study investigated the changes in individual molecular species in PE and the effects of a variety of dietary fats with varying proportions of saturated and unsaturated fatty acids on membrane composition, eicosanoid production and cytokine production in thioglycollate-elicited rat macrophages.
The data obtained indicates that the greatest degree of modulation by dietary fats on cytokine production was observed after 8 weeks feeding and at this time, the total diacyl species containing linoleic acid (18:2 n-6) and arachidonic acid (20:4 n-6) at the sn-2 position related in a curvilinear fashion to total 18:2 n-6 intake and that IL1 and IL6 production related in a curvilinear fashion to the total diacyl species with 20:4 and 18:2 at the sn-2 position.
After 4 weeks of feeding, fish and olive oils enhanced production of IL6 and LTB4, however, while IL1 production, after 8 weeks of dietary treatment, was greatest from macrophages of animals fed corn and olive oils, PGE2 production was greatest in the former group and LTB4 production in the latter. Thus an eicosanoid effect may explain the modulatory influence of olive oil and IL1 production but, cannot explain the effect of corn oil on production of the cytokine. The data from the present study provides some insight into how dietary fats could provide therapy for conditions in which inflammatory cytokines are implicated.
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Tappia, P.S., Grimble, R.F. The relationship between altered membrane composition, eicosanoids and TNF-induced IL1 and IL6 production in macrophages of rats fed fats of different unsaturated fatty acid composition. Mol Cell Biochem 165, 135–143 (1996). https://doi.org/10.1007/BF00229475
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DOI: https://doi.org/10.1007/BF00229475