title: [Inherited metabolic disorders of the transsulfuration pathway].
abstract: Several inherited metabolic disorders of the transsulfuration pathway are discussed. They are hypermethioninemia, homocystinuria, cystathioninuria, beta-mercaptolactate cysteine disulfideuria and sulfite oxidase deficiency (SOD). Primary coverage is given to homocystinuria and SOD. In the case of homocystinuria, metabolic defects include cystathionine beta-synthase deficiency, methylenetetrahydroforate reductase deficiency, and mutations in cobalamin metabolism. Their main clinical pictures, metabolic abnormalities, and treatment are also described. SOD appears in two cases as an isolated enzyme defect and a combined deficiency of sulfite oxidase and xanthine dehydrogenase that share a common molybdenum cofactor. The clinical, biochemical and neurological features of the two disorders are reviewed.
authors.affiliation: Makiyama Central Hospital, Division of Pediatrics.
authors.forename: H
authors.initials: H
authors.lastname: Haraguchi
mesh_terms: D000592:Amino Acid Metabolism, Inborn Errors / Q000378:metabolism*; D003540:Cystathionine / Q000652:urine; D003541:Cystathionine beta-Synthase / Q000172:deficiency; D006712:Homocystinuria / Q000378:metabolism*; D006801:Humans; D008715:Methionine / Q000097:blood* / Q000378:metabolism; D042965:Methylenetetrahydrofolate Reductase (NADPH2); D000587:Oxidoreductases Acting on CH-NH Group Donors / Q000172:deficiency; D014805:Vitamin B 12 / Q000378:metabolism
chemical_list: D003540:Cystathionine; D008715:Methionine; D000587:Oxidoreductases Acting on CH-NH Group Donors; D042965:Methylenetetrahydrofolate Reductase (NADPH2); D003541:Cystathionine beta-Synthase; D014805:Vitamin B 12