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- W3149769799 abstract "Brain water and sodium increase during ischemia, suggesting that the blood-brain barrier permeability to sodium is increased. To test this hypothesis we measured the permeability-surface area products of 22Na and [3H]sucrose in gerbils following 3 hours of unilateral ischemia. In animals with neurologic symptoms, unilateral carotid occlusion reduced the cerebral blood flow in the ipsilateral cerebral hemisphere to 13 +/- 4 ml/100 g/min (n = 6). The water content of the ischemic hemisphere increased from 79.0 +/- 0.6 to 80.8 +/- 0.2% (n = 7, p less than 0.001) and tissue sodium content increased from 231 +/- 17 to 359 +/- 23 mEq/kg (p less than 0.0001). However, there was a 40% reduction in the sodium permeability-surface area product of the ischemic hemisphere compared with the control side (1.65 +/- 0.44 vs 2.79 +/- 0.29 microliter/g/min, n = 6, p less than 0.001). The sucrose permeability-surface area product, a measure of blood-brain barrier integrity, was unchanged. Although ischemia was less severe i..." @default.
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- W3149769799 date "1987-01-01" @default.
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- W3149769799 title "Transport of sodium from blood to brain in ischemic brain edema." @default.
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