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Unsaturated Fatty Acid Composition of Subcutaneous Fat and Liver Fat in Bats in Relation to Dietary Fat

1958; Wiley; Volume: 42; Issue: 1 Linguagem: Inglês

10.1111/j.1748-1716.1958.tb01538.x

1365-201X

Henrik Dam, Petra Engel,

Mitochondrial Function and Pathology

Summary. When newly weaned female rats were given (through a period of 183 days) a fat‐free basal diet supplemented with 0, 38, 89, 178, and 444 mg peanut oil per day (corresponding to 0, 8, 19, 39, and 97 mg linoleic acid) the following changes were observed: 1. The amount of dienoic acid as percentage of the fat in the fat tissue declined sharply with time during the first 40 days and then levelled off at values nearly proportional to the daily dose of peanut oil. 2. In the liver the following results were obtained at the end of the feeding period: Expressed as mg per g liver, the amount of dienoic acid was not influenced by the peanut oil supplement. Trienoic declined with increasing doses of peanut oil. A value almost equal to 0 was obtained with the largest dose of peanut oil fed. Tetraenoic increased with increasing doses of peanut oil, following a curve which levelled off when the dose of peanut oil was near the maximal dose given. The sum of trienoic and tetraenoic was not influenced by the amount of peanut oil fed; this phenomenon is discussed in relation to the origin of the trienoic acid of fat‐deficiency. Scaly tail developed in the beginning of the feeding period with all doses of peanut oil. This sign declined after 50—90 days and was absent after 140 days of feeding, except when no peanut oil or the lowest dose (38 mg) was given.