[1]尤小芳,李明华,赵俊功,等.一种新型的适用于延迟溶栓治疗的大鼠脑血栓模型的制作[J].介入放射学杂志,2007,(05):330.
 YOU Xiao-fang,LI Ming-hua,ZHAO Jun-gong,et al.A modified thromboembolic stroke model of rat suitable for the delayed thrombolytic therapy[J].journal interventional radiology,2007,(05):330.
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一种新型的适用于延迟溶栓治疗的大鼠脑血栓模型的制作()

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《介入放射学杂志》[ISSN:1008-794X/CN:31-1796/R]

卷:
期数:
2007年05期
页码:
330
栏目:
实验研究
出版日期:
2007-05-15

文章信息/Info

Title:
A modified thromboembolic stroke model of rat suitable for the delayed thrombolytic therapy
作者:
尤小芳李明华赵俊功
200233上海交通大学附属第六人民医院放射科
Author(s):
YOU Xiao-fangLI Ming-huaZHAO Jun-gongLI Yong-dongCHENG Ying-sheng.
Department of Radiology,Shanghai Sixth People's Hospital,Shanghai Jiaotong University,Shanghai200233,China
关键词:
脑缺血血栓栓塞性卒中大鼠
分类号:
R735.3
文献标志码:
A
摘要:
目的通过对血栓大小的改良,建立适用于延迟溶栓治疗的大鼠脑血栓模型。方法将10个长度0.8~1.0mm、宽度0.35mm的白色血栓经颈内动脉分别注入栓塞脑动脉,形成局灶性脑血栓模型。接受脑血管栓塞的138只SD雄性大鼠被随机分为两大组,分别为单纯缺血组(n=68)和延迟溶栓治疗组(n=70)。单纯缺血组不接受任何治疗;延迟溶栓治疗组分别在血栓注入3、6和9h后,将10mg/kg的rt-PA自股静脉缓慢注入。使用MRI评价梗死灶的位置、大小、栓塞后不同时间的相对脑血流量。末次MRI检查结束后,大鼠脑组织用4%甲醛固定,作病理检查。结果共有131只大鼠在血栓注入后脑内形成明确梗死灶,模型成功率为95%,脑梗死仅位于同侧大脑半球占84.7%(111/131),局限于左侧顶叶皮质或(和)左侧基底节的占79.4%(104/131),局灶性脑梗死体积占同侧大脑半球(23.12±6.04)%;对侧大脑半球也同时出现梗死灶占14.5%(19/131)。发生局灶性出血11只,大面积出血1只,出血率为9.2%(12/131),均发生在延迟溶栓组。单纯缺血组大鼠,在血栓注入后3、6和9h的rCBV分别为(34.13±17.55)%、(40.67±25.91)%和(40.72±26.51)%,各组之间rCBV均无显著差异(分别为3h和6h,Z=-0.958,P=0.338,3h比9h,Z=-1.147,P=0.251)。延迟溶栓后成活率高(24h死亡13只;48h死亡1只,溶栓后8d和12d各死亡1只)。结论改良后的大鼠脑血栓模型是可靠的可重复性的类似于人类大脑中动脉分支栓塞的脑血栓模型,适用于研究延迟溶栓治疗的大鼠脑血栓模型。

参考文献/References:

[1]Krueger K,Busch E.Protocol of a thromboembolic stroke model in the rat review of the experimental procedure and comparison of models[J].Inv Radiol,2002,37:600-608.
[2]Dijkhuizen RM,Asah M,Wu O,et al.Rapid breakdown of microvascular barriers and subsequent hemorrhagic trans-formation after delayed recombinant tissue plasminogen activator treatment in a rat embolic stroke model[J].Stroke,2002,33:2100-2104.
[3]Gerriets T,Stolz E,Walberer M,et al.Neuroprotective effects of MK-801in different rat models for permanent middle cerebral artery occlusion:adverse effects of hypothalamic damage and strategies for its avoidance[J].Stroke,2003,34:2234-2239.
[4]Zhang Z,Zhang RL,Jiang Q,et al.A new rat model of throm-botic focal cerebral ischemia[J].J Cereb Blood Flow Metab,1997,17:123-135.
[5]Kilic E,Hermann DM,Hosmann KA.A producible model of th-romboembolic stroke in mice[J].Neuroreport,1998,9:2967-2970.

相似文献/References:

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备注/Memo

备注/Memo:
收稿日期:2007-03-06
基金项目:国家自然科学资金资助项目(30470506),上海市科委重点资助项目(034119851)
更新日期/Last Update: 2007-05-15