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Related Experiment Videos

Initial splanchnic extraction of ingested glucose in normal man.

J Radziuk, T J McDonald, D Rubenstein

    Metabolism: Clinical and Experimental
    |June 1, 1978
    PubMed
    Summary
    This summary is machine-generated.

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    This study shows that approximately 90% of ingested glucose is absorbed and enters the bloodstream, while endogenous glucose production is suppressed. This research utilized tracer techniques to measure glucose metabolism in normal volunteers.

    Area of Science:

    • Metabolic Research
    • Human Physiology
    • Endocrinology

    Background:

    • Understanding glucose metabolism is crucial for managing metabolic health.
    • The body regulates blood glucose through absorption and endogenous production.
    • Tracer techniques offer precise methods for studying metabolic pathways.

    Purpose of the Study:

    • To quantify the splanchnic (organ) uptake of ingested glucose.
    • To measure the suppression of endogenous glucose production following oral glucose intake.
    • To determine the fate of ingested glucose in normal human volunteers.

    Main Methods:

    • Utilized validated tracer techniques for non-steady-state turnover measurements.
    • Administered intravenous tracers (3-3H-glucose or 1-14C-glucose) and oral glucose loads (low or high) labeled with alternative tracers.

    Related Experiment Videos

  • Employed a two-compartment model to calculate peripheral appearance rates (Ra) of total and ingested glucose.

    • Main Results:

    • Approximately 90% of ingested glucose was absorbed and appeared in the systemic circulation.
    • Ingested glucose accounted for 90% +/- 4% of the total glucose reaching the systemic pool.
    • Endogenous glucose production was suppressed by 66% +/- 6% relative to basal levels.

    Conclusions:

    • In normal individuals, ingested glucose is efficiently absorbed and processed by the liver.
    • Oral glucose intake significantly suppresses the body's own glucose production.
    • Tracer studies confirm the direct systemic entry of absorbed glucose without significant sequestration and release.