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中华妇幼临床医学杂志(电子版) ›› 2007, Vol. 03 ›› Issue (02) : 91 -f11. doi: 10.3877/cma.j.issn.1673-5250.2007.02.110

论著

早期干预对宫内缺氧缺血大鼠脑电波及存活神经元数目的影响
刘玲, 陈燕惠, 陈达光   
  1. 福建医科大学附属协和医院儿科(福州,350001)
  • 出版日期:2007-04-01

Effects of early intervention on electroencephalogram and surviving neurons of infant rats with brain damage

Lin LIU, Yan-hui CHEN, Da-guang CHEN   

  1. Pediatric department, the Union Hospital affiliated with Fujian Medical University, Fuzhou, 350001, China
  • Published:2007-04-01
引用本文:

刘玲, 陈燕惠, 陈达光. 早期干预对宫内缺氧缺血大鼠脑电波及存活神经元数目的影响[J]. 中华妇幼临床医学杂志(电子版), 2007, 03(02): 91-f11.

Lin LIU, Yan-hui CHEN, Da-guang CHEN. Effects of early intervention on electroencephalogram and surviving neurons of infant rats with brain damage[J]. Chinese Journal of Obstetrics & Gynecology and Pediatrics(Electronic Edition), 2007, 03(02): 91-f11.

目的

探讨早期干预对促进宫内缺氧缺血(HIBD)大鼠脑损伤的修复作用。

方法

建立HIBD脑损伤大鼠动物模型,随机分为HIBD干预组、HIBD非干预组,以及正常干预组、正常非干预组。干预组采用早期视、触、听觉刺激和丰富环境的早期干预方法(术后24 h至生后28 d)。而后,采用脑电图检测大鼠脑功能。尼氏染色观察脑组织病理学变化。

结果

经过干预后,检测大鼠脑电图发现,HIBD干预组背景节律紊乱轻于HIBD非干预组,异常波形出现频率也较HIBD非干预组少见;尼氏染色结果显示,HIBD干预组海马存活神经元数目较HIBD非干预组多,正常干预组存活神经元数目较正常非干预组多。

结论

通过脑电波,以及存活神经元数目的比较结果表明,早期干预可能促进宫内HIBD大鼠脑损伤的修复。

Objective

To explore whether early intervention can affect electroencephalogram (EEG) and surviving neurons of infant rats with brain damage or not.

Methods

A rat model with HIBD in uterus was set up. Animals were divided into four groups (the intervention group treated by HIBD, HIBD-IT; the non-intervention group treated by HIBD, HIBD-NIT; the control with intervention group, Control-IT, the control with non-intervention group, Control-NIT) at random. After 24 h of the operation, the rats of the intervention groups received stimuli of handling, hearing and sight for 14 days, and then they were kept in an enriched environment for 14 day. The rats' functional outcome was observed the nerve electricity physiology changes in the central nervous system (CNS) by electroencephalogram. The tapetum histopathology variety was observed in the microscope by the Nissl's staining.

Results

In brain waves of HIBD-IT rats, we observed not only less background rhythm disordered, but also polymorphic slow waves with high amplitude occurred less frequently than that of HIBD-NIT rats, Surviving neurons of the HIBD-IT rats were more than the HIBD-NIT rats by Nissl's staining.

Conclusion

The comparision of EEG and surviving neurons indicated that early intervention might improve the development of infant rats with brain damage.

图1 正常非干预组第29 d大鼠的EEG
图2 正常干预组第29 d大鼠的EEG
图3 HIBD干预组第29 d大鼠的EEG
图4 HIBD非干预组第29 d大鼠的EEG
图5 HIBD非干预组尼氏染色(× 400)
图6 HIBD干预组尼氏染色(× 400)
图7 正常干预组尼氏染色(×400)
图8 正常非干预组尼氏染色(× 400)
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