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大鼠背根神经节神经元的分离方法及电生理特征探讨
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科技导报 |综述文章 2009 , 27 (0916) : 32 -35
大鼠背根神经节神经元的分离方法及电生理特征探讨
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王腾1,2,黄从新1,2,王高华3
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Isolation Method of Dorsal Root Ganglion Neurons of Rats and Their Electrophysiological Characteristics
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    出版时间: 2009-08-28
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    在获取大鼠背根神经节神经元后,全细胞膜片钳技术记录动作电位和钠电流,探讨大鼠背根神经节细胞的分离方法和细胞形态以及电生理特征。结果显示,本实验能得到完整圆形或椭圆长条形的大鼠背根神经节体。正常的单个背根神经节神经元呈圆形或椭圆形,大小不等,胞膜清晰,折光性好,隐约可见细胞核。在背根神经节细胞上记录的动作电位呈正立锐角三角形,静息电位小,动作电位时程短。背根神经节神经元的钠通道最大电流密度为(-62.04±4.45) pA/pF,几乎能被河豚毒素(TTX)完全抑制。本实验分离方法简单易行,背根神经节神经元容易获得和辨认,电生理特征明确,适用于神经系统疾病的电生理特征研究和治疗药物观察。
    膜片钳技术  /  背根神经节神经元  /  大鼠  /  电生理特征
    To investigate the isolation method of Dorsal Root Ganglion(DRG) neurons in rats and their electrophysiological characteristics, DRGs were obtained by double enzymatic dissociation. The patch clamp technique was used to record Action Potentials (AP) and sodium currents INa. The results show that a body of round and long DRG, and DRG neurons with middle measures and clear membranes and nucleus was obtained with good refraction properties. APs recorded in DRG neurons consist of five phases and in shape of upward acute triangles, with small static potential and short action duration. INa for DRG neurons, as the peak current density, is equal to (-62.04±4.45) pA/pF, and it is almost inhibited by tetrodotoxin and recovered from the inactivated state. It is concluded that the operations on the body of DRG are simple and easy to handle; DRG neurons are obtained quickly and identified; and the electrophysiological characteristics of DRG neurons are typical and clear. The methods and results may be used in investigations on electrophysiological properties and in medical treatments for diseases in nervous system.
    patch-clamp technique  /  dorsal root ganglion neuron  /  rat  /  electrophysiological characteristics
    王腾;黄从新;王高华. 大鼠背根神经节神经元的分离方法及电生理特征探讨. 科技导报, 2009 , 27 (0916) : 32 -35 .
    . Isolation Method of Dorsal Root Ganglion Neurons of Rats and Their Electrophysiological Characteristics[J]. Science & Technology Review, 2009 , 27 (0916) : 32 -35 .

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    鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
    小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
    多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
    红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
    小菇属 Mycena 11 5.26
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