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  1. Artikel ; Konferenzbeitrag: Serum autoantibodies against annexin A11 might weaken the biliary bicarbonate umbrella in IgG4-related cholangitis

    Herta, T. / Kersten, R. / Chang, J.-C. / Hubers, L. / Go, S. / Tolenaars, D. / Paulusma, C. C. / Nathanson, M. / Elferink, R. Oude / van de Graaf, S. F. / Beuers, U.

    Zeitschrift für Gastroenterologie

    2023  Band 61, Heft 08

    Veranstaltung/Kongress Viszeralmedizin 2023 77. Jahrestagung der DGVS mit Sektion Endoskopie Herbsttagung der Deutschen Gesellschaft für Allgemein- und Viszeralchirurgie mit den Arbeitsgemeinschaften der DGAV und Jahrestagung der CACP, Erst online. Dann Hamburg., 2023-09-11
    Sprache Deutsch
    Erscheinungsdatum 2023-08-01
    Verlag Georg Thieme Verlag
    Erscheinungsort Stuttgart ; New York
    Dokumenttyp Artikel ; Konferenzbeitrag
    ZDB-ID 201387-3
    ISSN 1439-7803 ; 0044-2771 ; 0172-8504
    ISSN (online) 1439-7803
    ISSN 0044-2771 ; 0172-8504
    DOI 10.1055/s-0043-1771806
    Datenquelle Thieme Verlag

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  2. Artikel: Cholestasis.

    Elferink, R Oude

    Gut

    2003  Band 52 Suppl 2, Seite(n) ii42–8

    Abstract: In contrast with urine formation, bile flow is not dependent on hydrostatic forces, but driven by osmotic pressure of solutes secreted across the apical membrane of hepatocytes and bile duct epithelial cells. This secretory process is mediated by a set ... ...

    Abstract In contrast with urine formation, bile flow is not dependent on hydrostatic forces, but driven by osmotic pressure of solutes secreted across the apical membrane of hepatocytes and bile duct epithelial cells. This secretory process is mediated by a set of primary active transporters that use ATP hydrolysis to pump solutes against the concentration gradient. The most important solutes in bile are bile salts, lipids, electrolytes, and organic anions. The direct consequence of the osmotic mechanism of bile formation is that impaired function of these pumps leads to impaired bile flow-that is, cholestasis. The function of these pumps is highlighted by a number of inherited cholestatic diseases, which are caused by mutations in these genes. Identification of the molecular defect in these diseases was not only important for diagnostic reasons but also emphasised that impaired transporter function has pathological consequences. Indeed, it is now becoming clear that impaired or downregulated transporter function is also involved in the pathogenesis of acquired cholestatic syndromes.
    Mesh-Begriff(e) Bile/metabolism ; Bile Acids and Salts/metabolism ; Cholestasis/genetics ; Cholestasis/metabolism ; Cholestasis, Intrahepatic/genetics ; Cholestasis, Intrahepatic/metabolism ; Female ; Humans ; Membrane Transport Proteins/genetics ; Membrane Transport Proteins/metabolism ; Mutation ; Pregnancy ; Pregnancy Complications/metabolism
    Chemische Substanzen Bile Acids and Salts ; Membrane Transport Proteins
    Sprache Englisch
    Erscheinungsdatum 2003-03-18
    Erscheinungsland England
    Dokumenttyp Journal Article ; Review
    ZDB-ID 80128-8
    ISSN 1468-3288 ; 0017-5749
    ISSN (online) 1468-3288
    ISSN 0017-5749
    DOI 10.1136/gut.52.suppl_2.ii42
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  3. Artikel: Mammalian ABC transporters in health and disease.

    Borst, P / Elferink, R Oude

    Annual review of biochemistry

    2002  Band 71, Seite(n) 537–592

    Abstract: The ATP-binding cassette (ABC) transporters are a family of large proteins in membranes and are able to transport a variety of compounds through membranes against steep concentration gradients at the cost of ATP hydrolysis. The available outline of the ... ...

    Abstract The ATP-binding cassette (ABC) transporters are a family of large proteins in membranes and are able to transport a variety of compounds through membranes against steep concentration gradients at the cost of ATP hydrolysis. The available outline of the human genome contains 48 ABC genes; 16 of these have a known function and 14 are associated with a defined human disease. Major physiological functions of ABC transporters include the transport of lipids, bile salts, toxic compounds, and peptides for antigen presentation or other purposes. We review the functions of mammalian ABC transporters, emphasizing biochemical mechanisms and genetic defects. Our overview illustrates the importance of ABC transporters in human physiology, toxicology, pharmacology, and disease. We focus on three topics: (a) ABC transporters transporting drugs (xenotoxins) and drug conjugates. (b) Mammalian secretory epithelia using ABC transporters to excrete a large number of substances, sometimes against a steep concentration gradient. Several inborn errors in liver metabolism are due to mutations in one of the genes for these pumps; these are discussed. (c) A rapidly increasing number of ABC transporters are found to play a role in lipid transport. Defects in each of these transporters are involved in human inborn or acquired diseases.
    Mesh-Begriff(e) ATP Binding Cassette Transporter, Sub-Family B/genetics ; ATP Binding Cassette Transporter, Sub-Family B/metabolism ; ATP-Binding Cassette Transporters/chemistry ; ATP-Binding Cassette Transporters/genetics ; ATP-Binding Cassette Transporters/metabolism ; Adenosine Triphosphate/metabolism ; Animals ; Bile/metabolism ; Biological Transport/physiology ; Drug Resistance, Multiple/physiology ; Humans ; Lipid Metabolism ; Metabolism, Inborn Errors/genetics ; Metabolism, Inborn Errors/physiopathology ; Multigene Family ; Nucleotides, Cyclic/chemistry ; Nucleotides, Cyclic/metabolism ; Protein Structure, Secondary ; Receptors, Cytoplasmic and Nuclear/metabolism ; Xenobiotics/metabolism
    Chemische Substanzen ATP Binding Cassette Transporter, Sub-Family B ; Nucleotides, Cyclic ; Receptors, Cytoplasmic and Nuclear ; Xenobiotics ; Adenosine Triphosphate (8L70Q75FXE)
    Sprache Englisch
    Erscheinungsdatum 2002
    Erscheinungsland United States
    Dokumenttyp Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 207924-0
    ISSN 1545-4509 ; 0066-4154
    ISSN (online) 1545-4509
    ISSN 0066-4154
    DOI 10.1146/annurev.biochem.71.102301.093055
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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