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・ Tyrosine aminotransferase
・ Tyrosine ammonia-lyase
・ Tyrosine decarboxylase
・ Tyrosine hydroxylase
・ Tyrosine kinase
・ Tyrosine kinase 2
・ Tyrosine N-monooxygenase
・ Tyrosine phenol-lyase
・ Tyrosine phosphorylation
・ Tyrosine sulfation
・ Tyrosine-ester sulfotransferase
・ Tyrosine-kinase inhibitor
・ Tyrosine-protein kinase BLK
・ Tyrosine-protein kinase CSK
・ Tyrosinemia
Tyrosinemia type II
・ Tyrosinemia type III
・ Tyrosine—arginine ligase
・ Tyrosine—tRNA ligase
・ Tyrosol
・ Tyrosylprotein sulfotransferase
・ Tyrothricin
・ Tyrotoxism
・ Tyrowo
・ TYRP1
・ Tyrrau Mawr
・ Tyrraz
・ Tyrrell
・ Tyrrell & Green
・ Tyrrell (surname)


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Tyrosinemia type II : ウィキペディア英語版
Tyrosinemia type II

Tyrosinemia type II (Oculocutaneous tyrosinemia,〔 Richner-Hanhart syndrome〔James, William; Berger, Timothy; Elston, Dirk (2005). ''Andrews' Diseases of the Skin: Clinical Dermatology''. (10th ed.). Saunders. ISBN 0-7216-2921-0.〕) is an autosomal recessive condition with onset between ages 2 and 4 years, when painful circumscribed calluses develop on the pressure points of the palm of the hand and sole of the foot.〔Freedberg, et al. (2003). ''Fitzpatrick's Dermatology in General Medicine''. (6th ed.). McGraw-Hill. ISBN 0-07-138076-0.〕
==Pathophysiology==
Type II tyrosinemia is caused by a deficiency of the enzyme tyrosine aminotransferase (), encoded by the gene ''TAT''. Tyrosine aminotransferase is the first in a series of five enzymes that converts tyrosine to smaller molecules, which are excreted by the kidneys or used in reactions that produce energy. This form of the disorder can affect the eyes, skin, and mental development. Symptoms often begin in early childhood and include excessive tearing, abnormal sensitivity to light (photophobia), eye pain and redness, and painful skin lesions on the palms and soles. About half of individuals with type II tyrosinemia are also mentally challenged. Type II tyrosinemia occurs in fewer than 1 in 250,000 individuals.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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