由Isoeugenol调节传感神经元的电压通道
David Ghim1,2, Jehan Dib1, Luiz Moreira-Junior3
1Arizona College of Osteopathic Medicine, Midwestern University, Glendale, AZ 85308, USA.
International journal of molecular sciences
|August 28, 2025
概括
通过阻断电压通道 (VGSCs) 来抑制神经元刺激性. 通过脱极化增强的这种作用表明一种潜在的止痛机制来控制疼痛.
科学领域:
- 神经科学
- 药理学
- 分子生物学
背景情况:
- 素是精油中的一种素,用于和麻醉.
- 关于异原醇直接调节神经元刺激和疼痛信号的数据有限.
研究的目的:
- 研究异醇对神经元刺激性的抑制作用.
- 要确定异醇是否调节电压激活的电流 (INa).
主要方法:
- 整个细胞电压对大鼠背根神经元的电生理学.
- 电压激活电流 (INa) 的隔离和分析.
主要成果:
- 异素醇显示出剂量依赖的,可逆的INa抑制.
- 通过膜脱极化增强了抑制,表明与电压通道 (VGSC) 的状态依赖相互作用.
结论:
- 素直接抑制VGSCs,这可能解释了它的止痛作用.
- 这种依赖状态的抑制为治疗疼痛提供了一个有前途的途径.
相关概念视频
Ligand-Gated Ion Channel Receptor: Gating Mechanism
2.6K
Ligand-gated ion channels are transmembrane proteins that play a vital role in intercellular communication and functions of the nervous system. They allow the influx of ions across the membrane once the neurotransmitter binds, allowing the subsequent transmission of electrical excitation across the neurons. Other ligand-gated ion channels, like the γ-aminobutyric acid (GABA) receptor, permit anions like chloride into the cells on the binding of the GABA molecule. Their entry into the cell...
2.6K
Voltage-gated Ion Channels
8.6K
Voltage-gated ion channels are transmembrane proteins that open and close in response to changes in the membrane potential. They are present on the membranes of all electrically excitable cells such as neurons, heart, and muscle cells.
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...
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...
8.6K
Mechanically-gated Ion Channels
6.7K
Mechanically-gated ion channels are proteins found in eukaryotic and prokaryotic cell membranes that open in response to mechanical stress. Tension, compression, swelling, and shear stress can alter the conformation of the protein, opening a transmembrane channel that allows the passage of ions for signal transmission. In eukaryotes, mechanically-gated channels are distributed in several regions like the neurons, lungs, skin, bladder, and heart, where they play critical roles in numerous...
6.7K
Local Anesthetics: Differential Sensitivity of Nerve Fibers
929
Local anesthetics (LAs) block the sodium channels of nerve trunks, sensory nerve endings, and neuromuscular junctions. Although LAs can block all kinds of nerves, the sensitivity of nerve fibers differs according to nerve types and structures. LAs are known to block myelinated fibers faster than unmyelinated ones. Also, they block pain or sensory neurons at low concentrations without affecting the motor neurons involved in muscle contractions. This helps relieve labor pain without affecting the...
929
The Role of Ion Channels in Neuronal Computation
3.3K
A postsynaptic neuron usually receives numerous impulses from several other presynaptic neurons. The axon hillock of the postsynaptic neuron integrates all these signals and determines the likelihood of firing an action potential.
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....
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....
3.3K
Antiepileptic Drugs: Modulators of Neurotransmitter Release Mediated by SV2A Protein
445
Antiepileptic drugs, such as levetiracetam (Keppra) and brivaracetam (Briviact), have emerged as crucial tools in managing epilepsy. These medications exert their therapeutic effects by targeting the synaptic vesicle protein SV2A, a transmembrane glycoprotein primarily found in the brain.
SV2A is a transmembrane glycoprotein located predominantly in the brain, modulating the release of neurotransmitters for neuronal communication. Both levetiracetam and brivaracetam exhibit a high affinity for...
SV2A is a transmembrane glycoprotein located predominantly in the brain, modulating the release of neurotransmitters for neuronal communication. Both levetiracetam and brivaracetam exhibit a high affinity for...
445


