Linked Life Data

12907461

Source:http://linkedlifedata.com/resource/pubmed/id/12907461

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
10
pubmed:dateCreated
2003-10-13
pubmed:abstractText
Background- Polymorphisms in the promoter (T-786C) and exon 7 (G894T) of the endothelial nitric oxide synthase (eNOS) gene were shown to be associated with reduced vascular NO production or increased proteolytic cleavage of eNOS. Therefore, we aimed to determine the effects of these polymorphisms on endothelial function and endothelial response to physical exercise in patients with coronary artery disease (CAD). METHODS AND RESULTS: Sixty-seven patients were randomized to either a training or a control group. At the beginning and after 4 weeks, acetylcholine-induced changes in average peak velocity (APV) of a coronary or mammary artery were invasively assessed by Doppler velocimetry. Polymorphisms were detected by polymerase chain reaction-restriction fragment length polymorphism. At the beginning, in subjects with the wild-type (WT) variant, APV increased by 88+/-7% in response to acetylcholine. This response was significantly blunted in patients who were positive for the promoter (44+/-7%) or the exon 7 (62+/-9%) polymorphism. Four weeks of exercise training resulted in augmentation of an endothelium-dependent increase in APV by +36+/-12% in promoter polymorphism-positive patients but by +81+/-18% and +91+/-15% in WT variant- and exon 7 polymorphism-positive subjects, respectively. CONCLUSIONS: These results suggest that the presence of either one of the polymorphisms attenuates endothelium-dependent vasodilatation in CAD patients. Only the promoter polymorphism might have an adverse effect on training-induced improvement in endothelial function.
pubmed:commentsCorrections
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
1524-4636
pubmed:author
pubmed:issnType
Electronic
pubmed:day
1
pubmed:volume
23
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1814-9
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
2003
pubmed:articleTitle
Promoter but not exon 7 polymorphism of endothelial nitric oxide synthase affects training-induced correction of endothelial dysfunction.
pubmed:affiliation
Heart Center, Department of Internal Medicine/Cardiology, University of Leipzig, Germany.
pubmed:publicationType
Journal Article, Clinical Trial, Randomized Controlled Trial