Cystadane is a medicine used to treat homocystinuria, an inherited disease where . Revision. Date of issue of marketing authorisation valid throughout the. It has been reported that homocystinuria due to CBS deficiency is .. All authors critically revised, reviewed and gave final approval of this. Disease name: Homocystinuria. ICD E Synonyms: Homocystinemia, classical homocystinuria, cystathionine b-synthase deficiency . Peer revision 1.
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Diagnosis Guidelines for the diagnosis and management of classic homocystinuria have been developed in Europe [ Morris et al ]. This becomes even more imperative if the mother is considering future pregnancies, as affected women are at increased risk for thromboembolic events during pregnancy. Symptoms The number and severity of symptoms vary. For a detailed summary of gene and protein information, see Table AGene.
Inaugural cerebral sinovenous thrombosis revealing homocystinuria in a 2-year-old boy. Regular ophthalmology assessments can identify eye complications such as progressive myopia and ectopia lentis and homocistinuia for early treatment and prevention of further complications such as retinal detachment.
If both parents carry the faulty gene, there is a: Click here pdf for terms used to describe sulfur amino acids. Definition Homocystinuria is a problem with the metabolism. If the test is positive, blood or urine tests can be done to confirm the diagnosis.
If the initial screening test result exceeds the cut-off level of methionine, follow-up testing is required. Homocystinuria is a genetic problem. Homocysteine and its disulfide derivatives: Careers Need a Physician?
Homocystinuria | Greater Denver Plastic and Hand Surgery
Genes and Databases for chromosome locus and protein. Restricts foods with methionine Consists mainly of fruits and vegetables Allows little, if any, meats, eggs, dairy products, breads, and pastas. GeneReviews is a registered trademark of the University homocistiuria Washington, Seattle.
Adjunctive treatment of homocystinuria, involving deficiencies or defects in: Revisiin causes low levels of a specific enzyme. Infants should be monitored monthly for the first six months of life and bimonthly until age one year, then every three months until age three years. In general, the diet:. To look for potential complications, the following tests may also be done: These tests can detect high levels of methionine, homocysteine, and other sulfur-containing amino acids.
Vitamin B 6 pyridoxine therapy. Both parents must have the defective gene in order for the child to develop the condition. Treatment There is no specific cure for homocystinuria. Early treatment is important. For practical information about using Cystadane, patients should read the package leaflet or contact their doctor or pharmacist.
Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with questions regarding a medical condition.
Prenatal diagnosis of homocystinuria is available. It causes low levels of a specific enzyme.
It causes low levels of revisiln specific enzyme. In some countries e. If 1 above is selected, and if the result confirms hypermethioninemia, plasma total homocysteine analysis and plasma amino acid analysis for methionine concentration should be performed to confirm or exclude the diagnosis of classic homocystinuria Table 1. Even after a homocistniuria of storage without deproteinization, virtually all tHcy can still be recovered by a method of preparation that includes a reducing agent such as dithiothreitol [ Smith et al ].
Surveillance Affected individuals should be monitored at regular intervals to detect any clinical complications that may develop, to assess dietary compliance, and to measure plasma total homocysteine and methionine concentrations.
Virtually all infants with classic homocystinuria detected by newborn screening programs have had pyridoxine vitamin B 6 non-responsive homocystinuria see Clinical Description.
X-rays An eye exam.
Defects of methionine, S-adenosylmethionine, or S-adenosylhomocysteine metabolism, which typically have increased methionine concentration but normal or only slightly increased total homocysteine concentration.
A special diet may help people who don’t respond to or don’t respond fully to vitamin B6 treatment. The cardinal biochemical features, including markedly increased concentrations of plasma total homocysteine tHcy and methionine, are summarized in Table 1.
Publication details Marketing-authorisation holder Orphan Europe S. Treatment of Manifestations Treatment should be managed by a biochemical geneticist and metabolic dietician and aimed at prevention of primary manifestations of homocystinuria.