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levodopa
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levodopa
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医学
左旋多巴
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levodopa
左旋多巴
酪氨酸经酪氨酸羟化酶作用生成的多巴胺(DA)的合成前体,易透过血-脑屏障,本身并无显著药理作用,通过在脑内经L-芳香氨基酸脱羧酶作用,代谢生成DA而间接发挥疗效。
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