双侧迷走神经和颈总动脉联合切断法建立急性脑缺血大鼠动物模型的实验研究
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Bilateral vagotomy and carotid arteries combined cutting method Establishment of rat model of acute focal cerebral ischemia animal model experimental study
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    摘要 目的:建立一种操作简单的急性脑缺血动物模型。方法:取雄性Wistar大鼠40只,体重在200—230g,手术前禁食12小时,自由饮水,随机分为对照组A、B、C组及模型D组,共4组,每组10只。即A组:假手术组,仅切开颈部两侧皮肤,分离双侧颈总动脉和迷走神经,不切断,然后缝合;B组:仅切断双侧颈部迷走神经;C组:结扎并切断双侧颈总动脉(CCA);D组:联合组,即结扎并切断双侧颈总动脉(CCA),同时切断双侧颈部迷走神经。观察各组大鼠手术后的脑缺血症状,记录各组大鼠在8小时内的死亡情况,超过8小时死亡的动物按8小时计,计算死亡率和死亡时间。结果:A组大鼠没有脑缺血症状,无死亡;B组大鼠无脑缺血症状,呼吸变慢变深,心率血压上升,但无死亡;C组大鼠部分出现脑缺血症状,眼睑下垂,活动能力低下,自发运动减少,也有些大鼠术后自发运动增加,在8h内无死亡;D组大鼠大多数出现较为明显的脑缺血症状,在8小时内全部死亡。结论:采取同时结扎并切断大鼠双侧颈总动脉和双侧颈部迷走神经的方法,可以建立急性脑缺血大鼠动物模型,此方法具有手术简单,成功率高,术后动物缓慢死亡的特点。

    Abstract:

    Abstract:Objectives: To establish a simple acute cerebral ischemia animal model. Methods: 40 male Wistar rats, weighing 200- 230grams, all rats fasting before operation12 hours, free drinking water, were randomly divided into control group, A, B and C group, D group and model group,4,10 each. A groups: sham operation group, only cut on both sides of the neck skin, separation of bilateral internal carotid arteries and vagus nerve, not cut off, and then stitched; group B: only the section of bilateral cervical vagus nerve; group C: only ligated and transected bilateral common carotid artery (CCA ); group D: combined group, namely the ligated and transected cervical total arterial ( CCA ), at the same time section of bilateral cervical vagotomy. Rats were observed after the operation of cerebral ischemic symptoms, rats were recorded within 8 hours of death, more than 8 hours of the death of the animal in8hours, calculation of mortality and death time. Results: A rats had no symptoms of cerebral ischemia, no death; group B rats without symptoms of cerebral ischemia, slow breathing becomes deep, heart rate and blood pressure to rise, but no deaths; the rats in group C part of cerebral ischemic symptoms, ptosis, activity ability is low, a reduction in spontaneous locomotion, but also some rat postoperative spontaneous exercise increases, in 8 h in no deaths; the rats in group D most appeared more obvious symptoms of cerebral ischemia, in full within 8 hours of death. Conclusion: Take the ligation of the bilateral common carotid artery of rats with bilateral cervical vagotomy and cut method, can establish a rat model of acute focal cerebral ischemia animal model, this method has the advantages of simple operation, high success rate, this method has simple operation, high success rate, the slow death of the characteristics of postoperative animals.

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张大维.双侧迷走神经和颈总动脉联合切断法建立急性脑缺血大鼠动物模型的实验研究[J].中国实验动物学报,2013,21(4).

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  • 收稿日期:2013-04-03
  • 最后修改日期:2013-04-03
  • 录用日期:2013-04-03
  • 在线发布日期: 2013-08-30
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