黑 mamba 毒可以向酸感应离子通道,以消除疼痛
Sylvie Diochot1, Anne Baron, Miguel Salinas
1CNRS, Institut de Pharmacologie Moléculaire et Cellulaire, UMR 7275, 06560 Valbonne, France.
Nature
|October 5, 2012
概括
新的蛇称为mambalgins强烈阻断酸感应离子通道 (ASICs),提供强大的疼痛缓解没有吗啡.
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.
- 生物化学 生物化学
背景情况:
- 聚类毒素对于理解离子通道功能至关重要,特别是在疼痛途径中.
- 酸感应离子通道 (ASIC) 是人类疼痛信号的关键参与者.
- 之前的蛇毒素激活ASIC已被证明可以诱导疼痛.
研究的目的:
- 为了研究黑 mamba 蛇的一种新类的对疼痛的影响.
- 为了确定这些是否可以抑制ASIC并产生止痛作用.
- 为了比较这些的止痛特性和副作用与吗啡.
主要方法:
- 从黑 mamba 毒液中分离和描述新的三指 (mambalgins).
- 在小鼠模型中,以中央和外围方式给药mambalgins.
- 评估镇痛效果和与吗啡的比较.
- 对纳洛耐药性,耐药性发展和呼吸系统影响的评估.
- 使用mambalgins与针对特定ASIC子单元的淘汰和淘汰动物模型一起进行的药理抑制研究.
主要成果:
- 从黑 mamba 毒中鉴定出了一种新型的类,mambalgins.
- 曼巴尔金在中枢神经元和外围神经元中有效抑制ASIC.
- 曼巴尔金显示出强大的止痛效应,与吗啡相当,但对纳洛耐药.
- 与吗啡相比,mambalgins诱导的耐受性较低,并且没有呼吸困难.
- 止痛效应涉及阻断中枢神经元中的ASIC1a/ASIC2a异构管道和可感受器中的ASIC1b含有管道.
结论:
- 曼巴尔金 (Mambalgins) 是一种来自自然来源的新一类强效止痛药.
- 这些提供了一个有前途的替代方案,以当前的疼痛治疗药物与潜在的改善副作用的档案.
- 用mambalgins针对特定的ASIC通道亚型,为疼痛管理策略开辟了新的途径.
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