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  • 1
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    Mutations in the glucose-6-phosphatase gene that cause glycogen storage disease type 1a (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-10-22
    Description: Glycogen storage disease (GSD) type 1a is caused by the deficiency of D-glucose-6-phosphatase (G6Pase), the key enzyme in glucose homeostasis. Despite both a high incidence and morbidity, the molecular mechanisms underlying this deficiency have eluded characterization. In the present study, the molecular and biochemical characterization of the human G6Pase complementary DNA, its gene, and the expressed protein, which is indistinguishable from human microsomal G6Pase, are reported. Several mutations in the G6Pase gene of affected individuals that completely inactivate the enzyme have been identified. These results establish the molecular basis of this disease and open the way for future gene therapy.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lei, K J -- Shelly, L L -- Pan, C J -- Sidbury, J B -- Chou, J Y -- New York, N.Y. -- Science. 1993 Oct 22;262(5133):580-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Human Genetics Branch, National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8211187" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Cell Line ; DNA, Complementary/genetics ; Exons ; Glucose-6-Phosphatase/*genetics/metabolism ; Glycogen Storage Disease Type I/enzymology/*genetics ; Glycosylation ; Humans ; Liver/enzymology ; Mice ; Molecular Sequence Data ; *Mutation ; Protein Conformation ; Transfection
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
    Electronic Resource
    Electronic Resource
    Calcium Kinetics in Glycogen Storage Disease Type 1a (1996)
    Springer
    Calcified tissue international 59 (1996), S. 449-453 
    Details
    ISSN: 1432-0827
    Keywords: Key words: Glycogen storage disease 1a — Von Gierke's disease — Calcium metabolism — Calcium kinetics — Calcium stable isotopes.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Notes: Abstract. Glycogen storage disease type 1a (Von Gierke's disease) is one of the more common glycogen storage diseases (GSD). GSD 1a patients can have severe idiopathic osteopenia, often beginning at a young age. Since calcium tracer studies offer a sensitive probe of the bone microenvironment and of calcium deposition, kinetics might be disturbed in patients with GSD 1a. Plasma dilution kinetics obtained using the stable isotope 42Ca are shown in this paper to be quite different between GSD 1a patients and age-matched controls. Comparison of kinetic parameters in these two populations is made using a new binding site model for describing calcium dynamics at the plasma-bone interface. This model describes reversible binding of calcium ions to postulated short-term and long-term sites by a retention probability density function ψ (t). Using this analysis, adult GSD subjects exhibited a significant decrease (P= 0.023) in the apparent half-life of a calcium ion on the longer-term site compared with controls. The general theory of calcium tracer dilution kinetics is then discussed in terms of a new model of short-term calcium homeostasis recently proposed by Bronner and Stein [5].
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00369209
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Calcium kinetics in glycogen storage disease type 1a (1996)
    Springer
    Calcified tissue international 59 (1996), S. 449-453 
    Details
    ISSN: 1432-0827
    Keywords: Glycogen storage disease 1a ; Von Gierke's disease ; Calcium metabolism ; Calcium kinetics ; Calcium stable isotopes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Notes: Abstract Glycogen storage disease type 1a (Von Gierke's disease) is one of the more common glycogen storage diseases (GSD). GSD 1a patients can have severe idiopathic osteopenia, often beginning at a young age. Since calcium tracer studies offer a sensitive probe of the bone microenvironment and of calcium deposition, kinetics might be disturbed in patients with GSD 1a. Plasma dilution kinetics obtained using the stable isotope 42Ca are shown in this paper to be quite different between GSD 1a patients and age-matched controls. Comparison of kinetic parameters in these two populations is made using a new binding site model for describing calcium dynamics at the plasma-bone interface. This model describes reversible binding of calcium ions to postulated short-term and long-term sites by a retention probability density function ψ (t). Using this analysis, adult GSD subjects exhibited a significant decrease (P=0.023) in the apparent half-life of a calcium ion on the longer-term site compared with controls. The general theory of calcium tracer dilution kinetics is then discussed in terms of a new model of short-term calcium homeostasis recently proposed by Bronner and Stein [5].
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00369209
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    Paper (German National Licenses)
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