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  • 1
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Clinica Chimica Acta 71 (1976), S. 331-334 
    ISSN: 0009-8981
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Annals of hematology 40 (1980), S. 107-115 
    ISSN: 1432-0584
    Keywords: Hemolytic anemia ; Enzyme deficiency ; Glucosephosphate isomerase ; Hämolytische Anämie ; Enzymdefekt ; Glucosephosphat-Isomerase
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Bei einem einjährigen deutschen Jungen wurde als Ursache für eine chronische hämolytische Anämie mit rezidivierenden hämolytischen Krisen ein GPI-Defekt der Erythrozyten entdeckt. Bei Konsanguinität der Eltern handelt es sich um einen homozygoten Defektträger. Die Untersuchung der biochemischen Eigenschaften des Defektenzymes ergab ein verändertes elektrophoretisches Muster, eine deutliche Thermolabilität, eine erhöhte Affinität für G6P und für den kompetitiven Inhibitor 6-PG und leicht zum alkalischen verschobene pH-Optima für beide Substrate. Von der Elektrophorese nach Einfrieren und Auftauen des Hämolysates kann geschlossen werden, daß die genetische Modifikation der GPI-Untereinheit hauptsächlich den Mechanismus betrifft, der beim normalen Enzym die Hauptbande in die Sekundärbanden überführt. Die einmaligen Eigenschaften des Defektenzyms sprechen für eine neue Variante, für die nach dem Geburtsort des Patienten der Name GPI Augsburg vorgeschlagen wird.
    Notes: Summary In a 1-year-old German boy a GPI deficiency was found to be the cause of a chronic nonspherocytic hemolytic anemia with recurrent hemolytic crises. Because of consanguinity of the parents, the patient is true homozygote. The investigation of the biochemical properties of the deficient enzyme revealed an altered electrophoretic behavior, pronounced thermolability, an increased affinity for G6P, an increased affinity for the competitive inhibitor 6-PG, and slightly changed pH optima for both substrates. Electrophoresis after freezing and thawing the hemolysate indicates that the genetic modification of the subunit involves the mechanism of transforming the main band into the secondary bands. The properties of the new deficient GPI indicate a new variant designated GPI Augsburg.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary A severe hemolytic crisis was observed in a 5-yearold boy of Italian origin. Analysis of his hemolysate revealed a hemizygous deficiency of glucose-6-phosphate dehydrogenese (G6PD) and a heterozygous deficiency of glucosephosphate isomerase (GPI). According to the literature this is the fourth family with a combined deficiency of these two enzymes located on different chromosomes. Only the G6PD deficiency seems to be responsible for the hemolytic crisis.
    Type of Medium: Electronic Resource
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