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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    European journal of pediatrics 110 (1971), S. 46-58 
    ISSN: 1432-1076
    Keywords: Secondary Cystathioninuria ; Cystathionine ; Identification ; Amino Acids ; Liver Diseases
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Es werden Methoden dargestellt, mit denen eine quantitativ geringe Cystathioninausscheidung im Urin festgestellt und bewiesen werden kann. Es wurden 5 Kinder gefunden, die eine mäßige Cystathioninausscheidung aufwiesen (14,5–99,0 μMol/Tag). Die klinischen Befunde dieser Patienten werden dargestellt. Drei von ihnen hatten Leberaffektionen, eines eine nichtketotische Hyperglycinämie, und bei einem Kind handelte es sich um ein Neugeborenes mit multiplen Fehlbildungen. Bei allen Fällen lag eine sekundäre Cystathioninurie vor. Die Ursachen, die zu einer sekundären Cystathioninurie führen, werden besprochen.
    Notes: Abstract A secondary cystathionuria was found in two children with liver disease (cirrhosis of unknown etiology, congenital biliary atresia), in one infant with hypercalcemia due to high doses of vitamin D, in one case of non-ketotic hyperglycinemia, and in one infant with multiple malformations. Methods for the determination of cystathionine, when excreted in only small amounts, are outlined.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    European journal of pediatrics 144 (1986), S. 563-566 
    ISSN: 1432-1076
    Keywords: Rett syndrome ; Hyperammonemia ; Multiple carboxylases ; Holocarboxylase synthetase ; Biotinidase
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A patient with Rett syndrome (cerebral atrophy associated with hyperammonemia) was studied. Primary defects of urea cycle enzymes were excluded as causes of the disorder. The analysis of urinary organic acids showed a moderate increase of lactate, methylcitrate, tiglylglycine and 3-hydroxisovalerate, indicating an abnormality of multiple carboxylases. Biotin supplementation reversed the urinary abnormalities. In fibroblasts grown with a low biotin medium propionylCoA and 3-methylcrotonylCoA carboxylase activities were reduced. Holocarboxylase synthetase activity was normal (V max and Km). Surprisingly the biotinidase in fibroblasts was not decreased. The data indicate that some patients with Rett syndrome might suffer from a biotin-dependent defect of unknown nature.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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