Linked Life Data

6243495

Source:http://linkedlifedata.com/resource/pubmed/id/6243495

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1980-4-25
pubmed:abstractText
alpha-Tocopherol dispersed in aqueous media with deoxycholate was found to be oxidized, at a physiological pH, by a xanthine-xanthine oxidase system. This reaction was completely inhibited by the addition of superoxide dismutase, whereas catalase and mannitol (scavenger of hydroxyl radical) did not affect the reaction. This finding indicates that the oxidation of alpha-tocopherol is caused by O2. The reaction product formed was identified as 8 alpha-hydroxy-alpha-tocopherone by thin-layer chromatography and ultraviolet spectroscopy. The product was found to change spontaneously to alpha-tocopherol quinone. beta-, gamma-, and delta-tocopherol dispersed with deoxycholate also reacted with O2. The reaction of tocopherols dispersed in the micellar form may be considered as a model of in vivo reaction of tocopherols, since tocopherols are present in tissues largely in the membranes, where O2 is known to be generated.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
0006-3002
pubmed:author
pubmed:issnType
Print
pubmed:day
3
pubmed:volume
627
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
101-8
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1980
pubmed:articleTitle
Oxidation by superoxide of tocopherols dispersed in aqueous media with deoxycholate.
pubmed:publicationType
Journal Article