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  • Articles: DFG German National Licenses  (4)
  • 1975-1979  (4)
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  • Articles: DFG German National Licenses  (4)
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Year
  • 1
    ISSN: 1432-1076
    Keywords: Ornithine carbamoyl transferase (OCT) deficiency ; Hyperammonemia ; Protein restriction ; Dietary treatment
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Dietary treatment of a male patient suffering from the delayed-onset type of OCT deficiency was attempted. Control of the hyperammonemia was attempted by restriction of protein intake, guided by monitoring the plasma ammonia and regular checking of the serum amino acid levels. The influence of supplementary citric acid or lactulose therapy on the plasma ammonia level was investigated and found to be negligible. The therapeutic effect of supplying ornithine and arginine (an essential amino acid in urea cycle disorders) is described. Despite intensive dietary treatment over two and a half years, a incorrigible hyperammonemic crisis resulted in the sudden death of our patients.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1573-2665
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A mentally retarded male infant with persistent hyperlysinaemia due to L-lysineα-ketoglutarate reductase deficiency is described. The effect of dietary restriction of lysine on his mental and behavioural development was examined. By restricting daily dietary lysine to 5.5 mg/kg body weight the fasting serum lysine became normal. Urinary lysine also became normal and the secondary metabolites homocitrulline, homoarginine,N α -acetyllysine andN ε -acetyllysine were no longer detected. After control of serum lysine for 2.5y it was felt that the patient's social behaviour, but not his mental development, had improved somewhat.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1573-2665
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A child is described who presented in the neonatal period with feeding difficulties, severe neurological abnormalities, lens dislocation of the eyes and dysmorphic symptoms of the head. Routine laboratory investigations revealed a decreased serum urate and a positive sulphite reaction of the urine. Subsequent chromatographic examinations showed xanthinuria and increased excretion ofS-sulphocysteine and taurine to be present. In addition, high thiosulphate and low sulphate excretions in the urine were observed. Xanthine oxidase deficiency was demonstrated in a jejunal biopsy specimen, whereas the excretion of sulphur containing substances was considered to be characteristic of sulphite oxidase deficiency. This new combination of defects may be the result of malfunctioning of both enzymes, possibly caused by alterations in the essential molybdenum containing active centre of the enzymes, which they share in common.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 319 (1977), S. 259-262 
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On the Structure of the Reaction Products from Phenacyl Thioglycolic Acid and Benzyl Mercaptan and from Phenacyl Benzyl Sulfide and Thioglycolic AcidPhenacyl benzyl sulfide gives with thioglycolic acid the expected mercaptol C6H5C(SCH2COOH)2CH2SCH2C6H5 (5) as the only reaction product, while phenacyl thioglycolic acid and benzyl mercaptan give the mercaptol C6H5C(SCH2C6H5)2CH2SCH2COOH (6) as well as the mercaptal C6H5CH(SCH2C6H5)Ch(SCH2C6H5)2 (4). The reactions took place in presence of hydrochloric acid. On the basis of the synthetic and the n.m.r. spectroscopic studies the reaction mechanisms are discussed.
    Notes: Phenacylbenzylsulfid ergibt mit Thioglykolsäure ausschließlich das erwartete Dithioketal C6H5C(SCH2COOH)2CH2SCH2C6H5 (5), während Phenacylthioglykolsäure mit Benzylmercaptan nicht nur das erwartete Dithioketal C6H5C(SCH2C6H5)2CH2SCH2COOH (6) sondern auch das Dithioacetal C6H5CH(SCH2C6H5)CH (SCH2C6H5)2 (4) ergibt. Die Reaktionen wurden in salzsaurem Medium ausgeführt. Die Reaktionsmechanismen wurden auf Grund von präparativen und NMR-spektroskopischen Untersuchungen diskutiert.
    Type of Medium: Electronic Resource
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