Abstract
The influences of zinc-deficiency and reduced food intake on levels of polyunsaturated fatty acids (PUFA) of phospholipids (PL) of lymphoid and nonlymphoid tissues were studied. Weanling male Long-Evans rats were fed ad libitum either a zinc-deficient (ZD) or a zinc-adequate (ZA) diet for 21 days. A pair-fed (PF) group was given the ZA diet in an amount equal to that consumed on the previous day by the ZD group. Linoleic acid (18:2ω6), 18:3ω6 and 20:3ω6 were either equivalent or significantly higher, but arachidonic acid (20:4ω6) and 22:5ω6 were either equivalent or significantly lower in tissues of ZD and PF rats compared to ZA rats. Total ω6 acids and metabolites were either equivalent or significantly lower in tissues of ZD and PF rats compared to ZA rats. In contrast, total ω3 acids and metabolites, and total ω9 acids and emtabolites were either equivalent or significantly higher in ZD and PF rats compared to ZA rats. Changes in PUFA patterns of lymphoid and nonlymphoid tissues of ZD rats were influenced by reduced food intake.
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