Dynamic changes of glutamate during cerebral ischemia in the cortex of cynomolgus monkeys

Chen WEI; Guoxian TAO; Rongping TANG; Guolong LIU; Zhiming ZHANG; Feng YUE

doi:10.16016/j.1000-5404.201701086

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Dynamic changes of glutamate during cerebral ischemia in the cortex of cynomolgus monkeys

Basic Medicine | 更新时间：2026-01-09

- Dynamic changes of glutamate during cerebral ischemia in the cortex of cynomolgus monkeys
- Journal of Third Military Medical University Vol. 39, Issue 17, Pages: 1728-1733(2017)
- 作者机构：
  
  1.530021 南宁，广西医科大学转化医学研究中心，长寿与老年相关疾病教育部重点实验室
  2.530003 南宁，广西南宁灵康赛诺科生物科技有限公司
  3.400037 重庆，第三军医大学新桥医院神经外科
  4.40536-0098 KY USA，Department of Anatomy and Neurobiology, University of Kentucky College of Medicine, Lexington
  5.100069 北京，首都医科大学宣武医院神经生物研究室
- 作者简介：
- 基金信息：
  
  the Science Research and Technology Development Plan of Guangxi Province(1598025-31);the Science Research and Technology Development Plan of Nanning City(20155192);the Science Research and Technology Development Plan of Nanning City(20163319)
- DOI：10.16016/j.1000-5404.201701086
  CLC： R341.7; R362; R743.31
- Received：13 January 2017，
  
  Revised：2017-03-09，
  
  Published：15 September 2017
- 稿件说明：
移动端阅览
Chen WEI, Guoxian TAO, Rongping TANG, et al. Dynamic changes of glutamate during cerebral ischemia in the cortex of cynomolgus monkeys[J]. Journal of Third Military Medical University, 2017, 39(17): 1728-1733.
DOI：

Chen WEI, Guoxian TAO, Rongping TANG, et al. Dynamic changes of glutamate during cerebral ischemia in the cortex of cynomolgus monkeys[J]. Journal of Third Military Medical University, 2017, 39(17): 1728-1733. DOI： 10.16016/j.1000-5404.201701086.

摘要

目的

探讨食蟹猴脑缺血过程中皮层细胞外谷氨酸水平动态变化。

方法

取3只(7.3±1.5) 岁的食蟹猴，将大脑中动脉(middle cerebral artery，MCA)M1段近端夹闭1 h后放开，建立食蟹猴脑缺血性模型，并通过磁共振成像检查(MRI)、神经功能缺损评分评价临床表现。在MCA M1夹闭前、夹闭过程中、夹闭放开后和术后第1、2周于手术同侧大脑皮层运动区同一部位，运用电化学微电极传感器技术检测该部位谷氨酸水平。

结果

短期夹闭MCA M1段的食蟹猴大脑皮层运动区谷氨酸水平在MCA M1夹闭过程中较夹闭前上升(

=0.003)；夹闭放开后较夹闭过程中的变化差异无统计学意义(

=0.877)；术后第1周较夹闭放开后下降(

=0.004)；术后第2周较术后第1周的变化差异无统计学意义(

=0.085)。

结论

脑缺血时可能加速皮层细胞外谷氨酸的释放，再灌注后谷氨酸的释放可能有所减弱或处于动态平衡。

Abstract

Objective

To explore the dynamic changes of glutamate in the cortex of cynomolgus monkeys during cerebral ischemia.

Methods

Proximal M1 segment of middle cerebral artery (MCA) was occluded for 1

in 3 young cynomolgus monkeys (7.3±1.5 years old) to induce cerebral ischemia. Magnetic resonance imaging and neurologic deficit scoring were used to evaluate the ischemia and observe the manifestations

respectively. Fast Analytical Sensing Technology (FAST) was applied to record the content of cortex glutamate in the same site of ipsilateral primary motor cortex in the periods of pre-

during

and post-occlusion

and at 1 and 2 weeks after surgery.

Results

Compared with pre-occlusion

the content of glutamate was increased significantly in the process of occluding in the

MCA M1 (

=0.003); No significant difference was observed in the content during occluding and post-occlusion (

=0.877). The content in the first week was decreased obviously as compared with post-occlusion (

=0.004)

but it showed no statistical difference with that in the second week (

=0.085).

Conclusion

Cerebral ischemia may potentially accelerate the extra-cellular glutamate release in the cortex

but reperfusion may ameliorate or balance off the glutamate release.

关键词

Keywords

references

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