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Influence of blood pressure on blood‐brain barrier function in brain ischemia
Author(s) -
Hardebo Jan Erik,
Beley Alain
Publication year - 1984
Publication title -
acta neurologica scandinavica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.967
H-Index - 95
eISSN - 1600-0404
pISSN - 0001-6314
DOI - 10.1111/j.1600-0404.1984.tb00836.x
Subject(s) - extravasation , evans blue , blood–brain barrier , medicine , blood pressure , ischemia , cerebral perfusion pressure , cerebral blood flow , anesthesia , blood flow , albumin , perfusion , hemodynamics , circulatory system , cardiology , pathology , central nervous system
– The influence of systemic blood pressure on blood‐brain barrier leakage and hemorrhage in brain ischemia was evaluated in Sprague‐Dawley rats with blood pressures at the lower and upper limit normally found in these animals when anesthetized on 70% N 2 O:30% O 2 . 24 h after unilateral cerebral microembolization ‐ when significant increases in water content and barrier permeability and decrease in blood flow is present ‐ the extravasation of Evans Blue‐albumin and inulin as well as hemorrhage in the infarcted brain area was considerably more prominent in animals with the higher blood pressure. The findings imply that attempts to elevate pressure, as well as subacute surgical circulatory reconstruction to increase perfusion of an ischemic area, may be potentially harmful.