Stroke, Vol 9, 588-590, Copyright © 1978 by American Heart Association
BB Johansson
Conscious rats and rats under nitrous oxide anesthesia were subjected to
blood pressure elevations by injection of epinephrine, bicuculline and
amphetamine. Mean arterial pressure was measured from a chronic indwelling
cannula in the aorta in awake rats. The protein leakage in the brains was
studied using Evans blue and 125IHSA. Conscious animals developed less
blood-brain barrier dysfunction than anesthetized ones. The largest
difference was obtained with amphetamine and the smallest with epinephrine.
Possible explanations to the results are discussed.
ARTICLES
Effect of an acute increase of the intravascular pressure on the blood- brain barrier: a comparison between conscious and anesthetized rats
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