Affiliation:
1. Cerebral Oedemia Research Group, Institute of Neurology, London, England
Abstract
The influence of reperfusion after profound incomplete forebrain ischaemia on blood–brain barrier (BBB) permeability to a small protein tracer was studied in male Sprague-Dawley rats, The mean cortical blood to brain transfer constant ( Ki) for 14C-amino isobutyric acid (AIB) was significantly greater at 3 and 6 h of reperfusion, 2.5 times the mean values of controls (p < 0.05) (2.5 μl g−1 min−1 and 1.0 μl g−1 min−1 respectively), but had returned to control values after reperfusion for 24 h. Analysis of distribution of Ki values showed that following 15 min and 30 min of profound ischaemia, there was a significant increase in transfer of AIB across the blood–brain barrier (BBB) after recirculation for up to 6 h, though there was no evidence of protein extravasation as assessed by Evans Blue (EB) dye. After 24 h of reperfusion, the BBB to AIB was restored, and Ki values had returned to control values. It is concluded that following transient global ischaemia, the BBB may recover rapidly.
Subject
Cardiology and Cardiovascular Medicine,Clinical Neurology,Neurology
Cited by
64 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献