{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,21]],"date-time":"2025-10-21T00:42:40Z","timestamp":1761007360228,"version":"build-2065373602"},"reference-count":34,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[1998,4,1]],"date-time":"1998-04-01T00:00:00Z","timestamp":891388800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Lipids"],"published-print":{"date-parts":[[1998,4]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>The previous studies showed that dietary 18\u22362 <jats:italic>c,t<\/jats:italic> isomers could be chain\u2010elongated and desaturated to produce unusual 20\u22364 isomers. The present study was undertaken to determine the minimal amount of 18\u22362n\u22126 required to suppress the chain elongation and desaturation of 18\u22362 <jats:italic>c,t<\/jats:italic> isomers in the lactating and neonatal rats when animals were fed 15% partially hydrogenated canola oil diet containing 1.72% energy as 18\u22362 <jats:italic>c,t<\/jats:italic> isomers and varying amounts of free 18\u22362n\u22126. These diets induced marginal essential fatty acid (EFA) deficiency states (0.56% energy 18\u22362n\u22126) to EFA adequacy (2.56% energy 18\u22362n\u22126). After feeding for 50 d, the female animals were mated with males by overnight pairing. After conception, the lactating rats were killed, together with one pup from each dam, at term and day 26 of lactation. Two unusual 20\u22364 isomers in both maternal and neonatal liver phospholipids were identified as 20\u22364\u03945<jats:italic>c<\/jats:italic>,8<jats:italic>c<\/jats:italic>,11<jats:italic>c<\/jats:italic>,14<jats:italic>t<\/jats:italic> and 20\u22364\u03945<jats:italic>c<\/jats:italic>,8<jats:italic>c<\/jats:italic>,11<jats:italic>c<\/jats:italic>,15<jats:italic>t<\/jats:italic>, which were derived from 18\u22362\u03949<jats:italic>c<\/jats:italic>,12<jats:italic>t<\/jats:italic>, and 18\u22362\u03949<jats:italic>c<\/jats:italic>,13<jats:italic>t<\/jats:italic>, respectively. The results showed that 18\u22362n\u22126 at about 2.0% of total energy in maternal diet was required to block the production of 20\u22364\u03945<jats:italic>c<\/jats:italic>,8<jats:italic>c<\/jats:italic>,11<jats:italic>c<\/jats:italic>,14<jats:italic>t<\/jats:italic> and 20\u22364\u03945<jats:italic>c<\/jats:italic>,8<jats:italic>c<\/jats:italic>,11<jats:italic>c<\/jats:italic>,15<jats:italic>t<\/jats:italic> in the maternal liver, whereas 18\u22362n\u22126 at about 2.5% of total energy in maternal diet was required to suppress production of these unusual 20\u22364 isomers in the neonatal liver.<\/jats:p>","DOI":"10.1007\/s11745-998-0222-x","type":"journal-article","created":{"date-parts":[[2006,11,13]],"date-time":"2006-11-13T13:19:42Z","timestamp":1163423982000},"page":"409-416","source":"Crossref","is-referenced-by-count":2,"title":["Inhibitory effect of linoleic acid on chain elongation and desaturation of 18\u22362 <i>c,t<\/i> isomers in lactating and neonatal 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