黑尿症(Alkaptonuria,AKU)是一种罕见的遗传性疾病,和酪氨酸苯丙氨酸的代谢障碍有关,是一种体染色体隐性遗传,具有无法合成尿黑酸氧化酶的缺陷,这种酵素可降解有毒性的尿黑酸,这种酪氨酸副产物,会使软骨区变成黑色,例如耳朵眼睛

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