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A Model of Rat Embolic Cerebral Infarction with a Quantifiable, Autologous Arterial Blood Clot

机译:具有可量化的自体动脉血栓的大鼠栓塞性脑梗死模型

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We developed a novel model of a rat embolic cerebral infarction with a quantifiable autologous arterial blood clot. The left femoral artery had 0.15 ml of blood withdrawn and mixed with 10 units of thrombin in 50 μl saline. After 30 min, the clot was suctioned into a 4-French polyvinyl chloride tube. A 24-gage catheter was inserted up through the internal carotid artery via the external carotid artery stump. The 1-cm clot, at a volume of 7.2 mm3, was pushed and inserted into the internal carotid artery via the catheter. After withdrawing the catheter, the ICA blood flow recovered. We checked neurological status after 24 h (neurological free was 15, and worst was 1) and measured the infarction volume by the TTC method. Twelve rats were examined, and five sham-operated rats were included. Two rats were not able to achieve an 80 % reduction in CBF. One rat died due to cerebral infarction. The success rate in producing infarction was 83 %. The total infarction volume was 368.5 mm3 ± 61.2 se. Median neurological score was 6. Hemorrhagic transformation was not detected. Sham-operated rats revealed no infarction and no neurological deficit. The volume of infarction correlated significantly with the neurological score. We conclude that this embolic stroke model is useful in producing a human, severe cardioembolic cerebral infarction.
机译:我们开发了一种可量化的自体动脉血凝块的大鼠栓塞性脑梗死的新型模型。左股动脉抽取0.15 ml血液,并与50μl盐水中的10单位凝血酶混合。 30分钟后,将血块吸入4法聚氯乙烯管中。通过颈外动脉桩通过颈内动脉插入一个24号导管。将体积为7.2 mm3的1 cm血块推入并通过导管插入颈内动脉。抽回导管后,ICA血流恢复。我们在24小时后检查了神经系统状况(无神经病的为15,最坏的为1),并通过TTC方法测量了梗死面积。检查了十二只大鼠,并包括了五只假手术的大鼠。两只大鼠不能使CBF降低80%。一只大鼠因脑梗死死亡。发生梗死的成功率为83%。总梗死体积为368.5mm3±61.2se。中位神经系统评分为6。未检测到出血性转化。假手术大鼠未见梗塞,神经功能缺损。梗死面积与神经学评分显着相关。我们得出结论,该栓塞性中风模型可用于产生人类严重的心脏栓塞性脑梗塞。

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