Linked Life Data

15224143

Source:http://linkedlifedata.com/resource/pubmed/id/15224143

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
2004-6-29
pubmed:abstractText
To investigate the inhibition of cyclosporin A (CsA) on neutrophil adhesion to human umbilical vein endothelial cells (HUVECs, ECV-304) induced by hypoxia/reoxygenation and further explore its mechanism, a 1 h hypoxia/4 h reoxygenation model was reproduced using ECV-304. The adhesion rate of neutrophils to ECV-304 was determined by measuring the activity of endogenous hexosaminidase. The expression of endothelial cell adhesion molecules of E-selectin and ICAM-1 was measured by flow cytometry. The expression of cyclophilin A (CyPA) and the activation of ERK1/2 was compared among experimental groups by Western blot. The content of reactive oxygen species (ROS) was measured by Fenton reaction. After being stimulated with 1 h hypoxia/4 h reoxygenation, ECV-304 showed an enhanced neutrophil adhensiveness in association with an increased surface expression of E-selectin and ICAM-1. In parallel, the content of ROS was also increased. These effects were significantly suppressed by the addition of CsA. Most importantly, the expression of CyPA was significantly increased following 1 h hypoxia/4 h reoxygenation, which was accompanied with an increased activation of ERK1/2. Treatment with CyPA inhibitor CsA and CyPA antisense oligonucleotides significantly inhibited the activation of ERK1/2 and decreased the adhesion of neutrophils to ECV-304. The specific ERK1/2 inhibitor PD98059 caused an inhibition of neutrophil adhesion to hypoxia/reoxygenation-stimulated ECV-304. Our data confirm that CsA inhibits neutrophil adhesion to hypoxia/reoxygenation stimulated ECV-304 by a mechanism involving inhibition of the signal transduction of ROS, CyPA and ERK1/2.
pubmed:language
chi
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
0371-0874
pubmed:author
pubmed:issnType
Print
pubmed:day
25
pubmed:volume
56
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
313-20
pubmed:dateRevised
2009-11-19
pubmed:meshHeading
pubmed:year
2004
pubmed:articleTitle
[Cyclosporin A inhibits the adhesion of neutrophil with ECV-304 induced by hypoxia/reoxygenation via ROS-Cyclophilin A-ERK1/2 pathway].
pubmed:affiliation
Institute of Pharmacy and Pharmacology, Nanhua University, Hengyang, Hunan 421001, China.
pubmed:publicationType
Journal Article, English Abstract, Research Support, Non-U.S. Gov't