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VX增强牛蛙交感神经节神经元的神经元兴奋性并改变其膜特性。

VX enhances neuronal excitability and alters membrane properties of Rana catesbeiana sympathetic ganglion neurons.

作者信息

Heppner T J, Fiekers J F

机构信息

Department of Anatomy and Neurobiology, University of Vermont College of Medicine, Burlington 05405.

出版信息

Comp Biochem Physiol C Comp Pharmacol Toxicol. 1992 Jun;102(2):335-8. doi: 10.1016/0742-8413(92)90121-m.

DOI:10.1016/0742-8413(92)90121-m
PMID:1358550
Abstract
  1. The effects of VX (10 microM) were examined on sympathetic ganglion neurons from the bullfrog using intracellular recording techniques. 2. VX significantly increased the amplitude of the residual EPSP from 4.8 +/- 0.86 mV (n = 4) to 13.7 +/- 1.23 mV (n = 4). 3. VX significantly decreased the membrane potential 5.2 +/- 0.75 mV (n = 6). The input resistance and the duration of the spike afterhyperpolarization (AHP) were also reduced 69.8% and 69.6% of control, respectively. 4. VX increased neuronal excitability greater than 200% (n = 5) of control. 5. The VX-induced neuronal excitability may result from a reduction in the duration of the AHP and contribute to the CNS toxicity.
摘要
  1. 使用细胞内记录技术,研究了VX(10微摩尔)对牛蛙交感神经节神经元的影响。2. VX使残余兴奋性突触后电位(EPSP)的幅度从4.8±0.86毫伏(n = 4)显著增加到13.7±1.23毫伏(n = 4)。3. VX使膜电位显著降低5.2±0.75毫伏(n = 6)。输入电阻和动作电位后超极化(AHP)的持续时间也分别降低至对照的69.8%和69.6%。4. VX使神经元兴奋性比对照增加超过200%(n = 5)。5. VX诱导的神经元兴奋性可能是由于AHP持续时间缩短所致,并导致中枢神经系统毒性。

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VX enhances neuronal excitability and alters membrane properties of Rana catesbeiana sympathetic ganglion neurons.VX增强牛蛙交感神经节神经元的神经元兴奋性并改变其膜特性。
Comp Biochem Physiol C Comp Pharmacol Toxicol. 1992 Jun;102(2):335-8. doi: 10.1016/0742-8413(92)90121-m.
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Eur J Pharmacol. 1985 Feb 26;109(2):213-8. doi: 10.1016/0014-2999(85)90422-4.
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