Linked Life Data

10362851

Source:http://linkedlifedata.com/resource/pubmed/id/10362851

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1999-7-12
pubmed:abstractText
We examined mean ( S.E.M.) changes in wall tension in isolated rat intrapulmonary arteries on switching from control conditions (pH 7.38 +/- 0.01; PCO2, 34.4 +/- 0.5 mmHg) to hypercapnic acidosis (pH change, -0.24 +/- 0.01; PCO2 change, +27.5 +/- 0.9 mmHg), isohydric hypercapnia (pH change, -0.02 +/- 0.01; PCO2 change, +28.5 +/- 0.8 mmHg) and normocapnic acidosis (pH change, -0.24 +/- 0.01; PCO2 change, -0.5 +/- 0.3). Arteries were submaximally preconstricted with prostaglandin F2 and changes in tension are expressed as a percentage of the 80 mM KCl-induced contraction (%Po). Mean changes in wall tension on switching to hypercapnic acidosis (+4.4 +/- 3.7 %Po), isohydric hypercapnia (+1.9 +/- 2.2 %Po) and normocapnic acidosis (-1.5 +/- 1.9 %Po) were not significantly different from the change observed on switching to control conditions (+3.5 +/- 1.1 %Po), and were unaltered by endothelial removal. In isolated carotid preparations, the change in tension in isohydric hypercapnia (-6.8 +/- 7.1 %Po) was not significantly different from that observed in control switches (+8.6 +/- 3.2 %Po). Significant reductions in tension (P < 0.001) were observed in hypercapnic (-42.9 +/- 7.8 %Po) and normocapnic acidosis (-36.4 +/- 9.0 %Po). These data suggest that intrapulmonary arteries are resistant to the vasodilator effects of extracellular acidosis observed in systemic (carotid) vessels.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0958-0670
pubmed:author
pubmed:issnType
Print
pubmed:volume
84
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
529-39
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1999
pubmed:articleTitle
Effects of changes in pH and PCO2 on wall tension in isolated rat intrapulmonary arteries.
pubmed:affiliation
Department of Human Anatomy and Physiology, University College, Earlsfort Terrace, Dublin 2, Ireland.
pubmed:publicationType
Journal Article, In Vitro, Research Support, Non-U.S. Gov't