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Tyrosinemia (or "Tyrosinaemia") is an error of metabolism, usually inborn, in which the body cannot effectively break down the amino acid tyrosine. Symptoms include liver and kidney disturbances and mental retardation. Untreated, tyrosinemia can be fatal. Most inborn forms of tyrosinemia produce hypertyrosinemia (high levels of tyrosine).〔 Charles Scriver, Beaudet, A.L., Valle, D., Sly, W.S., Vogelstein, B., Childs, B., Kinzler, K.W. (Accessed 2007). (The Online Metabolic and Molecular Bases of Inherited Disease. ) Chapter 79. New York: McGraw-Hill.〕 ==Types== There are three types of tyrosinemia, each with distinctive symptoms and caused by the deficiency of a different enzyme. * Type I tyrosinemia * Type II tyrosinemia * Type III tyrosinemia 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「tyrosinemia」の詳細全文を読む スポンサード リンク
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