摘要
侧脑室注入自体血液造成蛛网膜下腔出血模型,观察丁基苯酞(dlNBP)对局部脑血流的改善作用及血脑屏障的保护作用。结果表明,dlNBP5~20mg·kg-1明显提高蛛网膜下腔出血后3h内尾状核的血流量,但无明显的剂量效应关系。025mg·kg-1的尼莫地平亦明显提高脑血流。并发现dlNBP10mg·kg-1及尼莫地平025mg·kg-1(分别于蛛网膜下腔出血后5min和3hip)均能明显降低蛛网膜下腔出血6h后皮层组织中伊文氏蓝的摄取量,提示对血脑屏障有明显的保护作用。
Effects of dl3nbutylphthalide(dlNBP) on changes of regional cerebal blood flow (rCBF) and bloodbrain barrier of rats subjected to subarachnoid hemorrhage (SAH) were investigated. Regional CBF was determined by hydrogen clearance method at 15 min before, 15 and 30 min thereafter once every 30 min up to 180 min after the beginning of SAH. The results showed that SAH produced a significant decrease in rCBF in caudate nucleus and bloodbrain barrier damage which displayed increased extravasation of Evans blue to brain tissue. Both dlNBP (5~20 mg·kg-1 given intraperitoneally 5 min after the onset of SAH) and nimodipine (025 mg·kg-1) were shown to increase rCBF in caudate nucleus through 3 h of SAH. Moreover, dlNBP 10 mg·kg-1 and nimodipine 025 mg·kg-1, given 5 min and 3 h, respectively, after SAH, significantly reduced the brain extravasation of Evans blue 6 h after SAH, indicating that both dlNBP and nimodipine has protective effects on bloodbrain barrier. These results suggest that dlNBP has therapeutic effects on SAH.
出处
《药学学报》
CAS
CSCD
北大核心
1998年第4期245-249,共5页
Acta Pharmaceutica Sinica
基金
国家科委1035工程重大项目
关键词
蛛网膜下腔出血
丁基苯酞
脑血流
血脑屏障
Subarachnoid hemorrhage
dl3nButylphthalide
Nimodipine
Regional cerebral blood flow
Bloodbrain barrier