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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
2-3
|
pubmed:dateCreated |
1993-10-4
|
pubmed:abstractText |
The effect of intravenous dipyridamole (0.7 mg/kg) on cerebral blood flow (CBF), mean arterial blood pressure (MABP), heart rate, respiration rate, cerebral electrical activity, arterial blood gases, pH, and glucose was investigated in 14 normotensive and 14 stroke-prone spontaneously hypertensive anesthetized rabbits. CBF was measured by hydrogen and heat clearance. In both groups, MABP decreased (normotensive: -24 mm Hg, hypertensive: -47 mm Hg; ANOVA: P < 0.0001) and CBF increased (normotensive: +59 ml/100 g/min, hypertensive: +72 ml/100 g/min; ANOVA: P < 0.0002). CBF returned to the initial level 21 min later in hypertensive than in normotensive rabbits. Changes in other parameters were insignificant. In additional experiments, 30 mg/kg theophylline entirely prevented the cerebral vasodilator and systemic hypotensive effects of dipyridamole in both normotensive and hypertensive rabbits. We conclude that, in stroke-prone spontaneously hypertensive rabbits, the longer-lasting and larger CBF increase in response to dipyridamole may be attributed to reversible functional changes in the cerebral vasculature resulting from hypertension.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
|
pubmed:chemical | |
pubmed:status |
MEDLINE
|
pubmed:month |
Jun
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pubmed:issn |
0014-2999
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pubmed:author | |
pubmed:issnType |
Print
|
pubmed:day |
24
|
pubmed:volume |
237
|
pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
|
pubmed:pagination |
293-8
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:8365457-Analysis of Variance,
pubmed-meshheading:8365457-Animals,
pubmed-meshheading:8365457-Blood Pressure,
pubmed-meshheading:8365457-Brain Ischemia,
pubmed-meshheading:8365457-Cerebrovascular Circulation,
pubmed-meshheading:8365457-Dipyridamole,
pubmed-meshheading:8365457-Female,
pubmed-meshheading:8365457-Heart Rate,
pubmed-meshheading:8365457-Hypertension,
pubmed-meshheading:8365457-Injections, Intravenous,
pubmed-meshheading:8365457-Male,
pubmed-meshheading:8365457-Rabbits
|
pubmed:year |
1993
|
pubmed:articleTitle |
Effects of dipyridamole in spontaneously hypertensive rabbits with diffuse chronic cerebral ischemia.
|
pubmed:affiliation |
Department of Neurology and Psychiatry, University Medical School, Debrecen, Hungary.
|
pubmed:publicationType |
Journal Article,
Comparative Study,
Research Support, Non-U.S. Gov't
|