K通道和作用潜力在多种动物的背部根
1Pavlov Institute of Physiology, Russian Academy of Sciences, Saint Petersburg, Russia; Almazov Federal Medical Research Centre, Saint Petersburg, 197341, Russia; Institute of Biophysics, Johannes Kepler University, Linz, Austria; Department of Anatomy and Neurobiology, University of California, Irvine, CA 92697, USA.
哺乳动物背部根结节 (DRG) 神经元表现出独特的双相动作潜力 (AP). 这项研究综合了电生理学特性,重点关注K+通道,这对DRG神经元刺激性和疼痛感觉至关重要.
科学领域:
- 神经科学是一个神经科学.
- 电力生理学 电力生理学
- 分子生物学分子生物学
背景情况:
- 背部根结节 (DRG) 神经元产生双相动作潜能 (AP),与中枢神经系统 (CNS) 神经元不同.
- 疼痛感觉和调制涉及DRG神经元中的众多离子通道 (Cav,Kv,Nav,TRP),受体和神经递质.
- TRP通道是机械敏感性的关键,而纯能受体对于ATP介导的敏感性很重要.
研究的目的:
- 提供完整的DRG和孤立神经元的电生理学特性的比较合成.
- 强调K+通道在DRG神经元内产生动作潜力的作用.
- 探索DRG神经元刺激性和机械敏感性的分子基础.
主要方法:
- 从完整的DRG和孤立的DRG神经元进行电生理学记录的比较.
- 对离子通道功能的分析,包括电压关闭的 (Cav), (Kv) 和 (Nav) 通道.
- 过渡受体潜能 (TRP) 通道和纯能受体的研究.
主要成果:
- 与中枢神经系统神经元相比,DRG神经元表现出明显的双相动作潜力.
- Cav,Kv和Nav通道显著影响DRG神经元的刺激性.
- TRP通道对于机械敏感性至关重要,各种各样的α子单元有助于它们的功能.
结论:
- K+通道在塑造DRG神经元的动作潜能表型方面发挥着关键作用.
- 了解DRG神经元电生理学对于开发新型疼痛疗法至关重要.
- 在DRG神经元中的离子通道和受体的多样性突出显示了疼痛信号的复杂性.
更多相关视频
09:34Use of In Vivo Single-fiber Recording and Intact Dorsal Root Ganglion with Attached Sciatic Nerve to Examine the Mechanism of Conduction Failure
Published on: August 27, 2019
11:34Identification of Specific Sensory Neuron Populations for Study of Expressed Ion Channels
Published on: December 24, 2013
相关概念视频
Action Potential
Membrane potential in neurons
Neurons typically have a resting membrane potential of about -70 millivolts (mV). When they receive...
Action Potential
Membrane potential in neurons
Neurons typically have a resting membrane potential of about -70 millivolts (mV). When they receive...
Action Potentials
The Role of Ion Channels in Neuronal Computation
Sometimes a single EPSP is strong enough to induce an action potential in the postsynaptic neuron. However, multiple presynaptic inputs must often create EPSPs around the same time for the postsynaptic neuron to be sufficiently depolarized to fire an action potential....
Voltage-gated Ion Channels
Generally, all voltage-gated ion channels have a 'voltage-sensing domain' that spans the lipid bilayer. The charged residues in the sensor move in response to the membrane potential changes that open the channel allowing ions movement. There are several...
Non-gated Ion Channels
Compared to the gated ion channels, the non-gated channels, also known as leakage or passive channels, have no gating mechanism....
