Linked Life Data

2234326

Source:http://linkedlifedata.com/resource/pubmed/id/2234326

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1990-12-5
pubmed:abstractText
A new animal model for vasospasm using rat femoral artery has been developed. Whole blood, washed erythrocytes, or leukocytes in platelet-rich plasma were selectively applied to the adventitial surface of the femoral artery for 7 days in 15 rats, after which the vessels were perfusion-fixed and examined by light and transmission electron microscopy and immunohistochemistry. As compared with matched control arteries, there was a prominent reduction in luminal cross-sectional area after 7 days in vessels exposed to whole blood or washed erythrocytes, but not in those exposed to leukocytes in platelet-rich plasma. In arteries with luminal narrowing, light and transmission electron microscopy demonstrated marked morphological changes throughout the vessel wall similar to those seen in cerebral vasospasm after subarachnoid hemorrhage. Immunohistochemistry disclosed a prominent loss of immunoreactive actin in smooth muscle cells of arteries exposed to whole blood or erythrocytes. To assess the time course of arterial narrowing in this model, whole blood was selectively applied to the adventitial surface of femoral arteries in 23 rats for periods from 2 to 20 days. As compared with control arteries, arterial narrowing was variably present at 2 days, progressively increased by 5 days, was maximal at 7 to 10 days, and returned to near control levels by 20 days. The presence and severity of ultrastructural changes in vessel wall corresponded to the degree of arterial narrowing over time. These results suggest that chronic narrowing in rat femoral artery exposed to periadventitial blood is analogous to that observed in cerebral arterial vasospasm after subarachnoid hemorrhage. This new model represents a simple and reliable means to investigate pathogenic mechanisms and potential therapies for vasospasm.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
0148-396X
pubmed:author
pubmed:issnType
Print
pubmed:volume
27
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
349-56
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1990
pubmed:articleTitle
A rat femoral artery model for vasospasm.
pubmed:affiliation
Department of Neurological Surgery, University of Washington, Seattle.
pubmed:publicationType
Journal Article, Comparative Study, Research Support, U.S. Gov't, P.H.S., Research Support, U.S. Gov't, Non-P.H.S.