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Related Experiment Videos

Relation between pancreatic growth and blood flow.

S L Harper, D N Granger, J A Barrowman

    The American Journal of Physiology
    |January 1, 1985
    PubMed
    Summary

    Cholecystokinin octapeptide (CCK-OP) stimulates pancreatic growth in rats, causing increased blood flow and weight gain. This CCK-OP-induced pancreatic hyperemia is linked to tissue proliferation, not direct vascular effects.

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    Area of Science:

    • Gastroenterology
    • Physiology
    • Endocrinology

    Background:

    • Cholecystokinin (CCK) plays a role in regulating pancreatic function and growth.
    • Understanding the physiological effects of CCK analogues is crucial for gastrointestinal research.

    Purpose of the Study:

    • To investigate the effects of cholecystokinin octapeptide (CCK-OP) on pancreatic growth and blood flow in male rats.
    • To determine the relationship between CCK-OP administration and pancreatic tissue proliferation.

    Main Methods:

    • Male rats received daily subcutaneous injections of CCK-OP (3 µg/kg) or saline for 2, 4, 7, and 14 days.
    • Regional blood flows were measured using Sc46-labeled microspheres.
    • Pancreatic and small intestine weights, and pancreatic DNA content were assessed.

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    Main Results:

    • CCK-OP treatment led to significant pancreatic hyperplasia and increased wet weight at 7 and 14 days.
    • A notable pancreatic hyperemia was observed at 2 and 4 days of CCK-OP treatment.
    • No significant changes in small intestine weight or DNA content were found.

    Conclusions:

    • CCK-OP induces pancreatic growth and associated hyperemia in rats.
    • The observed hyperemia is attributed to the growth stimulus and potential vasodilator metabolite accumulation during pancreatic proliferation.
    • CCK-OP's effects are specific to the pancreas, with no impact on small intestine weight or DNA content.