Effect of age and dietary fat (fish, corn and coconut oils) on tocopherol status of C57BL/6Nia mice.

Abstract:

:The effect of age and dietary fat type on tocopherol status was investigated using young and old C57BL/6Nia mice fed semipurified diets containing 5% (by weight) fish, corn or coconut oils and supplemented with 30, 100 or 500 ppm dl-alpha-tocopheryl acetate for 6 wk. Tocopherol levels in the diets, plasma, liver, kidney and lung were measured by high performance liquid chromatography following appropriate extractions. The results indicate that mice fed fish oil maintain lower plasma and tissue tocopherol concentrations than those fed corn and coconut oils (fish less than corn oil less than coconut oil). The difference was not due to a loss of tocopherol prior to consumption, but rather appeared to occur during the absorption process. Old mice had lower plasma and liver tocopherol concentrations than young mice. Old mice fed fish oil, however, maintained plasma tocopherol levels better than young mice fed fish oil, presumably due to their larger tocopherol pool. No age effect was detected on kidney and lung tocopherol levels. It is concluded that tocopherol status is affected by age and dietary fat type, especially fish oil.

journal_name

Lipids

journal_title

Lipids

authors

Meydani SN,Shapiro AC,Meydani M,Macauley JB,Blumberg JB

doi

10.1007/BF02534004

subject

Has Abstract

pub_date

1987-05-01 00:00:00

pages

345-50

issue

5

eissn

0024-4201

issn

1558-9307

journal_volume

22

pub_type

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