Linked Life Data

12784613

Source:http://linkedlifedata.com/resource/pubmed/id/12784613

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
2003-6-4
pubmed:abstractText
The effects of dietary casein level (5-40%) on the liver microsomal phospholipid profile, delta 6-desaturase activity and related variables were investigated in rats to examine whether the dietary protein level affected the delta 6-desaturase activity through an alteration of the liver microsomal phospholipid profile. The effects of supplementing a 10% casein diet with certain amino acids were also investigated. The concentration of hepatic S-adenosylmethionine (SAM), the ratio of phosphatidylcholine (PC) to phosphatidylethanolamine (PE) and the delta 6-desaturase activity in liver microsomes, and the ratio of arachidonate to linoleate of microsomal PC increased with increasing dietary casein level. There were significant correlations between the dietary methionine content and hepatic SAM concentration, hepatic SAM concentration and microsomal PE concentration, and microsomal PE concentration and delta 6-desaturase activity. Supplementation of the 10% casein diet with methionine significantly increased the hepatic SAM concentration, PC/PE ratio, delta 6-desaturase activity, and arachidonate/linoleate ratio, whereas cystine supplementation had no or little effect on these variables. These increases induced by methionine were significantly suppressed by additional glycine. The results obtained here, together with those in our previous report, suggest that quantity and type of dietary protein might affect the delta 6-desaturase activity through an alteration of the liver microsomal profile of phospholipids, especially PE, and that the alteration of phospholipid profile might be mediated by a hepatic SAM concentration that reflects the dietary methionine level.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0916-8451
pubmed:author
pubmed:issnType
Print
pubmed:volume
67
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
743-51
pubmed:dateRevised
2009-11-19
pubmed:meshHeading
pubmed:year
2003
pubmed:articleTitle
Increased response of liver microsomal delta 6-desaturase activity to dietary methionine in rats.
pubmed:affiliation
Department of Applied Biological Chemistry, Faculty of Agriculture, Shizuoka University, Shizuoka 422-8529, Japan.
pubmed:publicationType
Journal Article