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[Bile formation and cholestasis].

P L Jansen1, M Müller, F Kuipers

  • 1Afd. Maag-, Darm- en Leverziekten, Academisch Ziekenhuis, Hanzeplein 1, 9713 GZ Groningen. p.l.m.jansen@int.azg.nl

Nederlands Tijdschrift Voor Geneeskunde
|January 6, 2001
PubMed
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Liver transport proteins are crucial for bile formation and compound secretion. Mutations in these proteins cause genetic liver diseases and affect drug resistance, highlighting their importance in health and disease.

Area of Science:

  • Hepatology
  • Molecular Biology
  • Genetics

Background:

  • Transport proteins in liver cells (hepatocytes) and bile ducts manage cholephilic compound uptake and secretion, essential for bile formation.
  • These proteins, often belonging to large gene families, are also found in various organs like the brain, placenta, kidneys, and intestines, as well as in prokaryotes and yeasts.
  • Dysfunction of these transporters is implicated in multidrug resistance in cancer cells.

Purpose of the Study:

  • To review the role of transport proteins in liver function and disease.
  • To highlight the involvement of these proteins in genetic cholestatic liver diseases.
  • To discuss their implications in drug-induced liver injury and other liver conditions.

Main Methods:

  • Literature review of cloned and characterized transport proteins.

Related Experiment Videos

  • Analysis of genetic data related to transport protein mutations in liver diseases.
  • Examination of the impact of specific compounds on transporter activity.

    • Main Results:

    • Transport proteins are vital for liver-specific functions and are expressed across diverse tissues and organisms.
    • Mutations in transport protein genes are the cause of several genetic cholestatic liver diseases, including progressive familial intrahepatic cholestasis and Dubin-Johnson syndrome.
    • These proteins are involved in drug-induced liver disease, primary biliary cirrhosis, and their function can be inhibited by drugs like cyclosporine and estradiol glucuronide.

    Conclusions:

    • Transport proteins are critical players in liver physiology and pathophysiology.
    • Genetic defects in these transporters lead to significant liver diseases.
    • Understanding these proteins is key for diagnosing and potentially treating various liver conditions and drug toxicities.