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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 50 (1972), S. 1082-1084 
    ISSN: 1432-1440
    Keywords: Cystinosis diagnosis ofβ-alanine ; cystine ; lymphocytes ; platelets ; heterogyous twins ; Cystinose-Diagnose ; β-Alanin ; Cystin ; Lymphocyten ; Thrombocyten ; Heterozygotc
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung In den Lymphocyten von 6 Cystinose-Kranken konnte Cystin in einer Menge von 2,5 nMol/mg Protein nachgewiesen werden, während es in den Thrombocyten nur in Spuren gefunden wurde. Eine bisher nicht beschriebene Erhöhung wurde für eine andere Aminosäure gefunden, die wir säulenchromatographisch alsβ-Alanin identifiziert haben. Diese erreichte in Lymphocyten von 6 Cystinosen 4,5 nMol/mg Protein, in Thrombocyten 7,5 nNol/mg Protein. Die Bestimmung derβ-Alanin-Konzentration in Lymphocyten und Thrombocyten ist geeignet, für die biochemische Diagnose der Cystinose angewendet zu werden. Voraussetzung ist die Heranziehung einer Ultramikromethode. Heterozygote zeigten in denβ-Alanin-Konzentrationen keine Abweichungen von der Norm. Die Ursache derβ-Alanin-Erhöhung in Lymphocyten und Thrombocyten ist noch nicht geklärt.
    Notes: Summary In 6 patients with cystinosis, the cystine concentration in lymphocytes was 2.5 nMol/mg protein, while only traces of cystine were found in the platelets. A previously undescribed elevation of another amino acid was observed which was identified asβ-alanine by column chromatography in this laboratory. In 6 patients with cystinosis, this amino acid reached a concentration of 4.5 nMol/mg protein and of 7.5 nMol/mg protein in the platelets of 5 patients with cystinosis. The assessment of theβ-alanine concentrations in lymphocytes and platelets is suitable for biochemical diagnosis of cystinosis. Ultra-micromethods must of course be used.β-alanine concentrations in heterozygotes were not different from the norm. The cause of the increase inβ-alanine concentrations in lymphocytes and platelets could not yet be explained.
    Type of Medium: Electronic Resource
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