Linked Life Data

8492641

Source:http://linkedlifedata.com/resource/pubmed/id/8492641

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
22
pubmed:dateCreated
1993-6-17
pubmed:abstractText
Oxidant injury of the vascular endothelium is considered an early event in the pathogenesis of atherosclerosis. In this study, the antioxidant effect of a 6-kDa thymic peptide (TP), isolated from calf thymus, was investigated in vitro using vascular endothelial cells. Confluent monolayers of bovine pulmonary artery endothelial cells (PAEC) were preincubated with different concentrations of TP for 24 h, washed, and then exposed to hydrogen peroxide (H2O2) for 2 or 4 h. Cell injury was assessed by measuring cell viability with methylthiazol tetrazolium (MTT) assay, and by determining the release of intracellular lactate dehydrogenase (LDH). Lipid peroxidation products of PAEC were monitored as malondialdehyde (MDA) with a thiobarbituric acid fluorometric assay. H2O2 (120 or 240 microM) incubated with PAEC decreased cell viability, increased LDH release, and elevated MDA production. Preincubation of PAEC with TP (25-150 micrograms/ml) before H2O2 exposure significantly increased cell viability, decreased LDH release, and reduced MDA production. These results demonstrate that TP can protect vascular endothelial cells from oxidant injury. The data thus suggest that TP may be useful for the prevention and/or treatment of atherosclerosis, and further suggest that immune modulating agents may directly or indirectly influence the functions of vascular endothelium.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0024-3205
pubmed:author
pubmed:issnType
Print
pubmed:volume
52
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1787-96
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1993
pubmed:articleTitle
Thymic peptide protects vascular endothelial cells from hydrogen peroxide-induced oxidant injury.
pubmed:affiliation
Department of Microbiology, School of Medicine, Loma Linda University, CA 92350.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't