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Tetracaine

丁卡因
Mechanism of action:
Tetracaine 是一種對胺基苯甲酸(PABA)衍生物。Tetracaine 為脂溶性分子,可穿過神經細胞膜進入細胞內,結合於電壓門控鈉離子通道(voltage-gated sodium channel)的內腔位點,穩定其失活狀態(inactivated state),導致去極化(depolarization)無法進行,動作電位無法傳播。
Reference(s):
1. Laver DR et al. (2011). Three independent mechanisms contribute to tetracaine inhibition of cardiac calcium release channels. J Mol Cell Cardiol.
2. Lanner JT et al. (2010). Ryanodine receptors: structure, expression, molecular details, and function in calcium release. Cold Spring Harb Perspect Biol.
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