Linked Life Data

2353824

Source:http://linkedlifedata.com/resource/pubmed/id/2353824

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1990-7-18
pubmed:abstractText
Rat heart myocardial membranes exposed to the free radical generating system, Fe2+/ascorbate, undergo lipid peroxidation as evidenced by the accumulation of thiobarbituric acid-reactive substances, loss of polyunsaturated fatty acids from phospholipids, and formation of conjugated dienes and fluorescent substances. In addition, the treated membranes exhibit a dramatic decrease in extractable phospholipids. This decrease is even more pronounced in individual phospholipid classes isolated by high-performance liquid chromatography. The decrease in lipid phosphorus under oxidant stress is accompanied by an increase in the phosphorus content of the aqueous phase after Folch extraction and by an even greater increase of phosphorus in the protein residue. In addition, increased amounts of saturated and monounsaturated fatty acyl groups are found in the protein residue of Fe2+/ascorbate-treated membranes. Extraction of the oxidant-treated membranes with acidic solvents does not enhance the recovery of phospholipids and neither does treatment with detergents, trypsin, and chymotrypsin prior to lipid extraction. However, treatment with the bacterial protease, Pronase, markedly enhances the recovery of phospholipids from the peroxidized membranes. These results indicate that membrane phospholipids undergoing free radical-induced peroxidation may form lipid-protein adducts, which renders them inextractable with lipid solvents.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
0003-9861
pubmed:author
pubmed:issnType
Print
pubmed:volume
280
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
45-52
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1990
pubmed:articleTitle
Peroxidative modification of phospholipids in myocardial membranes.
pubmed:affiliation
Hormel Institute, University of Minnesota, Austin 55912.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't