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Studies on transhepatic insulin absorption.

W Zingg, A M Rappaport, B S Leibel

    Canadian Journal of Physiology and Pharmacology
    |March 1, 1986
    PubMed
    Summary
    This summary is machine-generated.

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    Intraperitoneal insulin administration effectively controls plasma glucose. However, absorption via the liver surface did not enhance glucose modulation compared to other routes, suggesting alternative pathways may be involved.

    Area of Science:

    • Endocrinology
    • Metabolism
    • Pharmacology

    Background:

    • Intraperitoneal insulin administration is recommended for plasma glucose control.
    • This route is considered potentially more physiological due to absorption into the portal venous system.
    • Exact absorption pathways for intraperitoneal insulin remain unclear.

    Purpose of the Study:

    • To investigate the absorption of insulin through the liver surface following intraperitoneal administration in rats.
    • To determine the impact of liver surface absorption on glucose modulation.
    • To compare glucose modulation effects with other insulin administration routes.

    Main Methods:

    • Rats were administered insulin intraperitoneally.
    • Insulin absorption via the liver surface was assessed.

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  • Glucose modulation was measured and compared between different administration routes and liver exclusion scenarios.

    • Main Results:

    • Insulin was rapidly absorbed when administered intraperitoneally via the liver surface.
    • Glucose modulation effects were comparable to other insulin administration routes.
    • Delayed glucose modulation was observed when the liver was excluded from the lower peritoneal cavity.

    Conclusions:

    • Insulin absorption through the liver surface following intraperitoneal administration is rapid but does not uniquely enhance glucose modulation.
    • The liver plays a role in the timing of glucose modulation following intraperitoneal insulin.
    • Further research is needed to elucidate the precise pathways of intraperitoneal insulin absorption and their physiological significance.