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Related Experiment Videos

Plasma cholesterol levels in eviscerated rats.

J C Penhos, M Montalbert-Smith, A A Meyers

    Acta Physiologica Et Pharmacologica Latinoamericana : Organo De La Asociacion Latinoamericana De Ciencias Fisiologicas Y De La Asociacion Latinoamericana De Farmacologia
    |January 1, 1986
    PubMed
    Summary

    Removal of the gastrointestinal tract in rats significantly elevates plasma cholesterol. The liver and endocrine pancreas are critical regulators of cholesterol metabolism, not the intestines.

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    Area of Science:

    • Metabolic Physiology
    • Cholesterol Homeostasis

    Background:

    • Plasma cholesterol levels are influenced by various organs.
    • The roles of the gastrointestinal tract, liver, pancreas, and kidneys in cholesterol regulation are complex.

    Purpose of the Study:

    • To investigate the impact of evisceration, specifically the removal of the gastrointestinal tract, on plasma cholesterol levels in rats.
    • To determine the roles of the liver, pancreas, and kidneys in regulating cholesterol metabolism in this model.

    Main Methods:

    • Utilized eviscerated rat models with functional livers, where kidneys or pancreas could be removed or left in situ.
    • Assessed plasma cholesterol levels following surgical manipulation of organs.

    Main Results:

    • Removal of the gastrointestinal tract led to a significant increase in plasma cholesterol.
    • The liver was identified as the primary site for cholesterol esterification.
    • Pancreatic function, specifically insulin action, influenced cholesterol levels, mimicking diabetic states.
    • Complete restoration of cholesterol patterns occurred only when the liver, pancreas, and kidneys remained functional.

    Conclusions:

    • The gastrointestinal tract's absence does not significantly alter plasma cholesterol levels.
    • The liver and endocrine pancreas are the critical regulators of cholesterol metabolism in this experimental model.

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