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Pronunciation: ti'ro-si-no'sis

Definition: A very rare, possibly heritable disorder of tyrosine metabolism that may be caused by defective formation of p-hydroxyphenylpyruvic acid oxidase or of tyrosine transaminase; characterized by enhanced urinary excretion of p-hydroxyphenylpyruvic acid and of other tyrosyl metabolites upon ingestion of tyrosine or proteins containing that amino acid; of autosomal recessive inheritance.

[tyrosine + G. -osis, condition]

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.