相关实验视频
Updated: Jul 1, 2025

07:09
The Sciatic Nerve Cuffing Model of Neuropathic Pain in Mice
Published on: July 16, 2014
48.2K
Nav1.7调制器带有3-氧醇脊柱,具有逆转神经病痛的潜力
Yuwei Wang1, Jirong Shu2, Haoyi Yang1
1School of Pharmaceutical Sciences, Health Science Center, Shenzhen University, Shenzhen 518060, China.
ACS chemical neuroscience
|March 7, 2024
概括
一种新型化合物,3g有效地抑制电压通道 (Navs),特别是Nav1.7,为慢性疼痛管理提供了一个有希望的非阿片类药物方法. 这一发现可能会导致新的止痛药开发.
科学领域:
- 神经科学是一个神经科学.
- 药理学 药理学是指药理学的学科.
- 药用化学 医学化学
背景情况:
- 慢性疼痛影响全球10%以上的人口,目前的治疗方法不足.
- 电压通道 (Navs) 对于疼痛信号传输至关重要,并且是非阿片类止痛药的主要点.
- 在背部根质神经元 (DRG) 中,像Nav1.7这样的特定Nav亚型对缓解疼痛特别感兴趣.
研究的目的:
- 选二二子和3-氧氧二醇混合分子作为潜在的Nav抑制剂.
- 评估已识别的化合物在阻断神经元活动和疼痛信号传递方面的有效性.
- 调查最强效化合物所准的特定Nav亚型及其作用机制.
主要方法:
- 基于维拉特里丁 (VTD) 的成像,以选混合分子对Navs.
- 电压记录以评估化合物3g对DRG神经元中Na+电流的影响.
- 生物物理分析,选择性Nav抑制剂,异合体表达系统和分子对接来确定目标特异性和结合部位.
主要成果:
- 化合物3g显著抑制了VTD诱导的神经元活动和DRG神经元中的度依赖的Na+电流.
- 3g证明了依赖使用的阻断,减缓了Nav激活,并增强了不激活.
- 3g优先抑制TTX敏感 (Nav1.7) 超过TTX抗性Na+电流,与Nav1.7.的VSDIV结合.
- 在神经损伤的老鼠模型中,内注射3g减少了机械疼痛行为.
结论:
- 化合物3g是一种强大的Nav1.7通道抑制剂.
- 3g在慢性疼痛的临床前模型中表现出有希望的止痛作用.
- 这种分子代表了开发新型非阿片类止痛药的潜在治疗候选者.
相关概念视频
Analgesia and Pain Management
618
Pain is critical to various clinical pathologies, provoking an urgent need for effective management. Pain, whether acute or chronic, is a complex neurochemical process. Its alleviation depends on the type, with nonopioid analgesics effective for mild to moderate pain, such as musculoskeletal or inflammatory pain, while neuropathic pain responds best to anticonvulsants, tricyclic antidepressants, or serotonin/norepinephrine reuptake inhibitors. For severe acute or chronic pain, opioids may be...
618
Opioid Analgesics: Synthetic and Semisynthetic Opioids
295
Synthetic and semisynthetic opioids are pivotal in pain management and tackling opioid addiction. Semisynthetic opioids, including morphinans (morphine derivatives), oxycodone, oxymorphone, hydrocodone, and hydromorphone, have improved pharmacokinetic profiles compared to morphine. Additionally, heroin and 6-MAM (6-Monoacetylmorphine) show better CNS penetration than morphine due to heightened lipid solubility. Hydromorphone, a potent opioid, undergoes hepatic metabolism to form the active...
295
Opioid Receptors: Overview
808
Opioid receptors, including the mu (μ, MOR), delta (δ, DOR), and kappa (κ, KOR) types, belong to the rhodopsin family of G protein-coupled receptors. These receptors are located throughout the central and peripheral nervous systems and in non-neuronal tissues such as macrophages and astrocytes. Opioid receptor ligands can be categorized into agonists or antagonists. Highly selective agonists include [d-Ala2, MePhe4, Gly(ol)5]-enkephalin or DAMGO for MOR, [D-Pen2,...
808
Chemotherapy-Induced Nausea and Vomiting: Neurokinin-1 Receptor Antagonists
163
Neurokinin 1 (NK1) receptors are distributed across the GI tract, vagal afferents, and key CNS regions including the central vomiting center and chemoreceptor trigger zone (CTZ) Chemotherapy agents stimulate enterochromaffin cells in the gastrointestinal (GI) tract to release large amounts of substance P (SP). SP is a neuropeptide released by specific sensory nerves in response to many different stressors, including those in the GI mucosa affected by chemotherapy. SP binds and activates...
163
Nondepolarizing (Competitive) Neuromuscular Blockers: Mechanism of Action
1.8K
Nondepolarizing neuromuscular blockers induce paralysis by competitively blocking nicotinic acetylcholine receptors at the muscle end plate. Examples include pancuronium, mivacurium, vecuronium, and rocuronium. These quaternary ammonium derivatives are administered intravenously, are poorly absorbed, and are excreted via the kidneys.
Competitive antagonists prevent acetylcholine from binding to its receptor, inhibiting membrane depolarization. Without conformational changes or intrinsic...
Competitive antagonists prevent acetylcholine from binding to its receptor, inhibiting membrane depolarization. Without conformational changes or intrinsic...
1.8K
Ligand-Gated Ion Channel Receptor: Gating Mechanism
2.2K
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...
2.2K

