Linked Life Data

17030135

Source:http://linkedlifedata.com/resource/pubmed/id/17030135

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
2007-5-21
pubmed:abstractText
The aim of this work was to evaluate the effect of physical preconditioning in the responsiveness of rat pulmonary rings submitted to lung ischemia/reperfusion (IR). Wistar rats were divided into three groups: Sedentary sham-operated (SD/SHAM); sedentary submitted to ischemia/reperfusion (SD/IR) and trained submitted to ischemia/reperfusion (TR/IR) animals. Exercise training consisted in sessions of 60 min/day running sessions, 5 days/week for 8 weeks. Left pulmonary IR was performed by occluding for 90 min and reperfusing for 120 min. After that, pulmonary arteries were isolated and concentration-response curves to acetylcholine (ACh), histamine (HIST), sodium nitroprusside (SNP), phenylephrine and U46619 were obtained. Neither potency (-log EC(50)) nor maximal responses (E(max)) were modified for ACh and HIST in all groups. On the other hand, the potency for SNP was significantly increased in TR/IR group (8.23+/-0.06) compared to SD/IR group (7.85+/-0.04). Contractile responses mediated by a-adrenergic receptor were markedly decreased in IR groups (SD/IR: 6.75+/-0.06 and TR/IR: 6.62+/-0.04) compared to SD/SHAM (7.33+/-0.05). No changes were seen for the U46619 in all groups. In conclusion, the present study shows that exercise training has no protective actions in the local blood vessel where the IR process takes place.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
1095-6433
pubmed:author
pubmed:issnType
Print
pubmed:volume
147
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
793-8
pubmed:meshHeading
pubmed:year
2007
pubmed:articleTitle
Influence of physical preconditioning on the responsiveness of rat pulmonary artery after pulmonary ischemia/reperfusion.
pubmed:affiliation
Department of Physical Education, Institute of Biosciences, University of São Paulo State (UNESP), Rio Claro (SP), Brazil.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't