Linked Life Data

15993870

Source:http://linkedlifedata.com/resource/pubmed/id/15993870

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2005-9-9
pubmed:abstractText
Ischemia-reperfusion of the heart and other organs results in the accumulation of unesterified arachidonic acid (AA) via the action of membrane-bound phospholipases, primarily phospholipase A2. AA can be metabolized by the classical cyclooxygenase (COX) and lipoxygenase (LOX) pathways to well-characterized metabolites and their respective cardioprotective end products such as prostacyclin (PGI2) and 12-hydroxyeicosatetraenoic acid (12-HETE). However, it has only been recently recognized that another less well-characterized pathway of AA metabolism, the cytochrome P450 (CYP) pathway, may have important cardiovascular effects. Several lines of data support the possibility that certain CYP metabolites resulting from the hydroxylation of AA such as 20-hydroxyeicosatetraenoic acid (20-HETE) are potent vasoconstrictors and may produce detrimental effects in the heart during ischemia and pro-inflammatory effects during reperfusion. On the other hand, a group of regioisomers resulting from the epoxidation of AA, including 5,6-, 8,9-, 11,12- and 14,15-epoxyeicosatrienoic acid (EETs), have been shown to reduce ischemic and/or reperfusion injury in the heart and vasculature. This review will discuss the detrimental and beneficial actions, including the potential cellular mechanisms responsible as a result of stimulating or inhibiting the two arms of this novel CYP pathway. The therapeutic potential of increasing EET concentrations and/or reducing 20-HETE concentrations will also be addressed.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
0008-6363
pubmed:author
pubmed:issnType
Print
pubmed:day
1
pubmed:volume
68
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
18-25
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
2005
pubmed:articleTitle
Cytochrome P450 and arachidonic acid metabolites: role in myocardial ischemia/reperfusion injury revisited.
pubmed:affiliation
Department of Pharmacology and Toxicology, Medical College of Wisconsin, Milwaukee, WI 53226, USA. ggross@mcw.edu
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, N.I.H., Extramural