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Metabolic effects of hypothalamic hyperphagia.

R G MacKenzie, R Luboshitzky, J K Goldman

    Metabolism: Clinical and Experimental
    |May 1, 1981
    PubMed
    Summary

    Hypothalamic obesity and gluconeogenesis remain responsive to food intake. Hyperphagia (overeating) partially reduces gluconeogenesis and fully restores liver glycogen in obese models.

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    Area of Science:

    • Metabolism
    • Endocrinology
    • Neuroscience

    Background:

    • Hypothalamic obesity is characterized by altered metabolic processes, including enhanced gluconeogenesis.
    • The responsiveness of this enhanced gluconeogenesis to changes in food intake is not fully understood.

    Purpose of the Study:

    • To investigate whether enhanced gluconeogenesis in hypothalamic obesity is modulated by food intake.
    • To examine gluconeogenesis under hyperphagic and normophagic conditions in different models of hypothalamic obesity.

    Main Methods:

    • Measurement of gluconeogenesis in two distinct models of hypothalamic obesity.
    • Comparison of gluconeogenesis rates under conditions of hyperphagia (increased food intake) and normophagia (normal food intake).

    Main Results:

    • Hyperphagia was found to partially decrease gluconeogenesis in both models of hypothalamic obesity.
    • Liver glycogen levels were fully restored under hyperphagic conditions in both modes.

    Conclusions:

    • Enhanced gluconeogenesis in hypothalamic obesity remains responsive to changes in food intake.
    • Hyperphagia plays a role in modulating glucose metabolism and glycogen restoration in this condition.

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