Abstract
Female pigs were fed from three wk of age and up to two years a diet containing partially hydrogenated fish oil (PHFO, 28%trans monoenoic fatty acids), partially hydrogenated soybean oils (PHSBO, 36%trans fatty acids) or lard. No consistent differences were found between PHFO and PHSBO with regard to incorporation oftrans fatty acids in organ lipids, buttrans incorporations were highly organ-specific. Notrans fatty acids were detected in brain phosphatidylethanolamine (PE). The incorporation of monoenoictrans isomers, as a percentage of totalcis + trans, in other organs was highest in subcutaneous adipose tissue and liver mitochondria PE, followed by blood lipids with the lowest level in heart PE. The percentage oftrans isomers compared with that of dietary lipids was consistently lower for 20∶1, compared with 18∶1 in organs from PHFO-fed pigs. The only effect of dietarytrans fatty acids on the fatty acid pattern of brain PE was an increased level of 22∶5n−6. Heart PE and total serum lipids of pigs fed the hydrogenated fats contained higher levels of 18∶2n−6, and these lipids of the PHFO-fed group also contained slightly elevated amounts of 20∶3n−6, 18∶3n−3 and 20∶5n−3. Liver mitochondria PE of the PHFO group also contained higher levels of 20∶3n−6 and 22∶5n−6. Dietarytrans fatty acids caused a consistent decrease of saturated fatty acids compensated by increased levels of monoenes. Thus, it may be concluded that dietary long-chaintrans fatty acids in PHFO behaved similarly metabolically to 18∶1-trans in PHSBO in pigs, without noticeable influence on brain PE composition and with moderate to slight effects on the fatty acid profile of the other organs.
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Abbreviations
- CB:
-
galactocerebrosides
- PC:
-
phosphatidylcholine
- PE:
-
phosphatidylethanolamine
- PHFO:
-
partially hydrogenated fish oils
- PHSBO:
-
partially hydrogenated soybean oils
- PHVO:
-
partially hydrogenated vegetable oils
- PUFA:
-
polyunsaturated fatty acids
- GLC:
-
gas liquid chromatography
- HPLC:
-
high performance liquid chromatography
- TLC:
-
thin layer chromatography
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Pettersen, J., Opstvedt, J. Trans fatty acids. 2. Fatty acid composition of the brain and other organs in the mature female pig. Lipids 23, 720–726 (1988). https://doi.org/10.1007/BF02535675
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DOI: https://doi.org/10.1007/BF02535675