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Related Experiment Videos

High-density lipoproteins decrease the biliary concentration of chlordecone in isolated perfused pig liver.

P J Soine, R V Blanke, V M Chinchilli

    Journal of Toxicology and Environmental Health
    |January 1, 1984
    PubMed
    Summary
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    High-density lipoproteins (HDL) influence how the body processes the organochlorine pesticide chlordecone (CD). HDL reduces CD uptake by the liver and its excretion into bile, favoring its distribution toward the liver.

    Area of Science:

    • Environmental Toxicology
    • Pharmacokinetics
    • Hepatobiliary Transport

    Background:

    • Chlordecone (CD) is an organochlorine pesticide known to accumulate in the liver.
    • CD circulates in plasma, primarily bound to albumin and high-density lipoproteins (HDL).
    • Understanding CD's transport and excretion is crucial for assessing its toxicological impact.

    Purpose of the Study:

    • To investigate the influence of plasma high-density lipoproteins (HDL) on the biliary excretion of chlordecone (CD).
    • To determine how HDL affects CD distribution between plasma, liver, and bile.

    Main Methods:

    • Isolated pig liver perfusion system using Krebs-Ringer bicarbonate solution.
    • Administration of radiolabeled [14C]chlordecone ([14C]CD) bound to either albumin or HDL.

    Related Experiment Videos

  • Measurement of [14C]CD concentrations in perfusate, liver, and bile over time.

    • Main Results:

    • Chlordecone (CD) was rapidly taken up by the liver within 5 minutes of administration.
    • Plasma CD concentrations were lower when administered bound to HDL compared to albumin.
    • Biliary CD concentrations were significantly lower when CD was bound to HDL.
    • HDL addition reduced biliary CD concentrations even after albumin-bound CD administration.

    Conclusions:

    • High-density lipoproteins (HDL) significantly alter chlordecone (CD) distribution.
    • HDL promotes CD distribution towards the liver, reducing its excretion into bile.
    • HDL binding influences both plasma-to-liver and liver-to-bile CD transport.