实验动物与比较医学 ›› 2020, Vol. 40 ›› Issue (1): 22-27.DOI: 10.3969/j.issn.1674-5817.2020.01.004

• 论著 • 上一篇    下一篇

双侧颈总动脉闭塞法制作血管性痴呆大鼠模型的行为学动态评估

从琳1, 张智龙2   

  1. 1.天津中医药大学, 天津 301617;
    2.天津市中医药研究院附属医院, 天津 300120
  • 收稿日期:2019-07-29 出版日期:2020-02-25 发布日期:2020-12-18
  • 作者简介:从琳(1989-), 博士研究生, 从事中医药防治脑血 管病、糖尿病及其并发症的研究。E-mail: 770234263@qq.com
  • 基金资助:
    天津市卫生计生委、天津市中医药管理局资助 项目(2017027)

Dynamic Behavioral Assessment of Vascular Dementia Rat Models Made by Bilateral Common Carotid Artery Occlusion

CONG Lin1, ZHANG Zhilong2   

  1. 1. Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China;
    2. Tianjin Academy of Traditional Chinese Medicine Affiliated Hospital, Tianjin 300120, China
  • Received:2019-07-29 Online:2020-02-25 Published:2020-12-18

摘要: 目的 观察双侧颈总动脉闭塞(BCCAO)法制作血管性痴呆(VaD)大鼠模型的死亡率,并运用Morris水迷宫(MWM)动态观察术后大鼠的认知功能。方法 将68只智能无明显差异的雄性SD大鼠随机分为假手术组9只,BCCAO组59只,记录术后30 d内2组大鼠的死亡率;并于术后30~34 d、60~64 d及90~94 d行MWM行为学测试,评估BCCAO组大鼠的认知功能,检测BCCAO组大鼠的VaD成模率。结果 BCCAO术后30 d内,大鼠死亡率为20.3%。MWM行为学测试中,BCCAO组大鼠的平均速度与假手术组基本相同(P>0.05); 术后60~64 d及90~94 d的检测中,BCCAO组大鼠的逃避潜伏期较假手术组明显延长(P<0.05),其VaD成模率分别为97.9%和95.7%。结论 BCCAO法制作VaD大鼠模型,方法安全可靠。术后大鼠无明显运动功能障碍,模型大鼠的VaD表现或于术后35~60 d形成,并可持续至术后90 d。

关键词: 血管性痴呆(VaD), 动物模型, 认知障碍, 双侧颈总动脉闭塞(BCCAO), 测试时间

Abstract: Objective To observe the mortality of vascular dementia (VaD) rat models induced by bilateral common carotid artery occlusion (BCCAO), and to dynamically observe the cognitive function of rats after BCCAO via Morris water maze (MWM) test. Methods Sixty-eight male SD rats with no significant difference in intelligence were randomly divided into sham operation group (9 rats) and BCCAO group (59 rats). The mortality of the two groups was recorded within 30 days after operation. MWM behavioral tests were performed in 30-34, 60-64 and 90-94 days after operation to evaluate the cognitive function of the rats in BCCAO group and to detect the rate of VaD model forming in BCCAO group. Results Within 30 days after BCCAO, the mortality rate of rats was 20.3%. In MWM behavioral test, the average speed of rats in BCCAO group was basically same as that in sham operation group, with no significant difference (P>0.05); the escaping latency of rats in BCCAO group was significantly longer than that in sham operation group at 60-64 and 90-94 days after operation (P<0.05), and the VaD model rate was 97.9% and 95.7% respectively. Conclusions BCCAO is safe and reliable method to make VaD rat models. There is no obvious motor dysfunction in the rats after operation. VaD in the model rats can be basically formed between 35 and 60 days after operation and lasted till 90 days after operation.

Key words: Vascular dementia (VaD), Animal model, Cognitive impairment, Bilateral common carotid artery occlusion (BCCAO), Test time

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