Linked Life Data

7638559

Source:http://linkedlifedata.com/resource/pubmed/id/7638559

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1995-9-12
pubmed:abstractText
In vitro studies have indicated increased endothelial release of endothelin during tissue and cellular hypoxia. Therefore, we studied the effect of tourniquet ischaemia and venous stasis on plasma endothelin-1 (ET-1) levels in humans in vivo. The effect of hypoxia on plasma ET-1 levels in 16 patients subjected to an orthopaedic operation and six healthy volunteers was studied by (a) tourniquet ischaemia, in which a limb is totally emptied of blood and kept ischaemic by means of a pneumatic tourniquet, and (b) venous stasis in an upper arm. The mean (SEM) basal plasma ET-1 concentration in the patients subjected to tourniquet ischaemia of a lower limb was 4.1 (1.0) pg ml-1. No significant change in plasma ET-1 levels during or after tourniquet ischaemia was found. The mean (SEM) plasma ET-1 concentration in six healthy subjects prior to venous occlusion in the right upper arm was 3.3 (0.7) and 2.7 (0.3) pg ml-1 in the right and left arm, respectively. A significant increase in plasma ET-1 concentration after 20 min was observed in the arm subjected to venous stasis, but not in the other, control, arm. Mean arterial blood pressure did not change significantly. Local tissue hypoxia may not be an important stimulus for ET-1 release in humans in vivo, whereas short-term venous occlusion in an upper arm leads to local release of ET-1 by an as yet unknown mechanism.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0036-5513
pubmed:author
pubmed:issnType
Print
pubmed:volume
55
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
251-6
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1995
pubmed:articleTitle
Effects of prolonged tourniquet ischaemia and short-term venous stasis on plasma endothelin-1 levels in man.
pubmed:affiliation
Unit of Clinical Physiology, Minerva Foundation Institute for Medical Research, Helsinki, Finland.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't