The effect of vitamin E (alpha-tocopherol) supplementation on hepatic levels of vitamin A and E in ethanol and cod liver oil fed rats.
Eight groups of 5 rats were fed 8 differing liquid diets with and without ethanol, cod liver oil and/or increased levels of vitamin E. Hepatic levels of vitamins A and E were determined following the 28-day feeding time. Ethanol consumption decreased the levels of hepatic vitamin E (p less than 0.05), vitamin A (p less than 0.05) and the ratio of vitamin A/E (p less than 0.05). Hepatic levels of vitamins A and E were unaffected in rats fed cod liver oil. Supplementation of the normal dietary level of 30 IU of vitamin E per kg diet, with an additional 142 IU alpha tocopherol/kg diet, restored hepatic concentrations of vitamin E to normal levels in alcohol-fed rats. The hepatic levels of vitamin A in rats fed ethanol diets supplemented with vitamin E were less than that of control rats but were 4.3 times greater than that of rats on ethanol diets unsupplemented with vitamin E. However, the vitamin A and E ratio was equal to normal in this group of rats. The vitamin A/E ratio was reduced in liver of rats fed non-alcoholic diets supplemented with vitamin E due to increased levels of hepatic vitamin E. Additionally, rats fed cod liver oil diets containing ethanol also indicated decreased hepatic vitamin A and E levels. However, these levels were greater than that of rats fed only alcoholic diets suggesting that these vitamins are replaced by the vitamin A and E content in the cod liver oil.(ABSTRACT TRUNCATED AT 250 WORDS)
Odeleye
O E
OE
Department of Nutritional Sciences, University of Arizona, Tucson 85724.
Eskelson
C D
CD
Alak
J I
JI
Watson
R R
RR
Chvapil
M
M
Mufti
S I
SI
Earnest
D
D
D000437:Alcoholism / Q000378:metabolism*; D000818:Animals; D000975:Antioxidants; D003060:Cod Liver Oil / Q000008:administration & dosage*; D004435:Eating; D005527:Food, Fortified; D015227:Lipid Peroxidation; D008099:Liver / Q000187:drug effects* / Q000378:metabolism; D008297:Male; D051381:Rats; D011919:Rats, Inbred Strains; D014801:Vitamin A / Q000378:metabolism*; D014810:Vitamin E / Q000008:administration & dosage* / Q000378:metabolism
D000975:Antioxidants; D014801:Vitamin A; D014810:Vitamin E; D003060:Cod Liver Oil