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河豚鱼中含的河豚毒素是什么

更新时间: 2020-11-12 00:00:00     

河豚毒是一种神经毒素,是钠离子通道的阻断剂。阻断钠离子通道使得可兴奋细胞在受到刺激之后不能进行钠离子内流的去极化,从而不能形成动作电位,兴奋也不能传导。所以河豚毒中毒最明显的就是重度肌肉瘫痪,因为呼吸肌麻痹,所以中毒者大多死于呼吸衰竭。

关键词: 河豚 毒素 什么

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