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匹罗卡品致痫大鼠海马神经肽Y中间神经元数目变化及其轴突出芽 被引量:1

Number changes and axonal sprouting of neuropeptide Y interneurons in the hippocampus of pilocarpine-induced rats
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摘要 目的:探讨神经肽Y(neuropeptide Y,NPY)中间神经元在颞叶癫痫的发生和自我修复中的作用。方法:建立匹罗卡品致痫模型,应用免疫组织化学技术动态观察大鼠海马NPY中间神经元的数目变化及其轴突出芽。结果:实验组大鼠腹腔注射氯化锂-匹罗卡品后,癫痫持续状态(status epilepticus,SE)诱发成功率为92.9%,死亡率19.2%。免疫组织化学结果显示,实验组大鼠海马门区NPY中间神经元数目在SE后下降,至7d时降至最低(P<0.01),慢性期开始恢复,SE后60d时NPY神经元数目与对照组相比仍有减少(P<0.05);CA区域除SE后7dCA3区NPY神经元数目稍减少外(P<0.05),其余时间点均无明显变化(P>0.05);SE后30d齿状回分子层可见增多的NPY阳性纤维。结论:NPY中间神经元在不同部位不同时段对颞叶癫痫所致损伤的敏感性不同,NPY中间神经元的缺失在颞叶癫痫发生中起重要作用,NPY中间神经元的轴突出芽在颞叶癫痫的自我修复中起作用。 Objective To investigate the role of neuropeptide Y(NPY) positive interneurons in the generation and compensation of temporal lobe epilepsy.Methods Pilocarpine-induced rat model was founded.Immunohistochemistry was used to observe the number changes and axonal sprouting of NPY interneurons at different time points in the hippocampus of rats.Results After lithium-chloride and pilocarpine administration,92.9% rats were induced status epilepticus(SE) successfully,and the mortality rate was 19.2%.In the experim...
出处 《中南大学学报(医学版)》 CAS CSCD 北大核心 2009年第2期93-98,共6页 Journal of Central South University :Medical Science
基金 卫生部临床学科重点项目(卫规财函200 -353) 湖南省科技厅一般项目(2007TP4005)~~
关键词 神经肽Y 中间神经元 颞叶癫痫 轴突出芽 neuropeptide Y interneuron temporal lobe epilepsy axonal sprouting
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参考文献2

  • 1Helen E. Scharfman PhD. The neurobiology of epilepsy[J] 2007,Current Neurology and Neuroscience Reports(4):348~354
  • 2E.A. Proper,G.H. Jansen,C.W.M. van Veelen,P.C. van Rijen,W.H. Gispen,P.N.E. de Graan. A grading system for hippocampal sclerosis based on the degree of hippocampal mossy fiber sprouting[J] 2001,Acta Neuropathologica(4):405~409

同被引文献16

  • 1吴逊.癫痫与发作性疾病[M].北京:人民军医出版社,2001.6-22.
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  • 6Racine RJ. Modification of sei.zure activity by electrical stimulation II Motor Seizure[J]. ElectToencephogr Clin Neurophysiol, 1972, 32:781- 794.
  • 7Proper EA, Jansen GH, Van Veelen CW, et al. A grading system for hi- ppoeampal sclerosis based on the degree of hippocampal mossy fiber sprouting[J]. Acta Neuropathol, 2001, 101:405-409.
  • 8Savolainen KM, Hirvonen MR. Second messengers in cholinergic 2 induced convulsions and neuronal injury [J]. Toxicol Lett, 1992,64: 443-445.
  • 9Einet H, Kofman O, Itkin O, et al. Augmentation of lithium's behavio- ral effect by inositol uptake inhibitors [J]. J Neural Transm, 1998, 105:31-38.
  • 10Hogan RE, Bucholz RD, Joshi S. Hippocampal deformation based shape analysis in epilepsy and unilateral mesial temporal sclerosis[J]. Epilepsia, 2003, 44 (6): 8002-8061.

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