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Related Experiment Videos

Prostaglandin E2 production by rabbit urinary bladder

W W Brown, T V Zenser, B B Davis

    The American Journal of Physiology
    |November 1, 1980
    PubMed
    Summary
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    Rabbit bladders synthesize prostaglandin E2 (PGE2). The study found distinct PGE2 synthesis systems in the bladder

    Area of Science:

    • Biochemistry
    • Physiology

    Background:

    • Prostaglandin E2 (PGE2) is a key inflammatory mediator.
    • Understanding PGE2 synthesis in the bladder is crucial for its physiological roles.

    Purpose of the Study:

    • To investigate the synthesis of prostaglandin E2 (PGE2) in the rabbit bladder.
    • To determine if different layers of the bladder possess distinct PGE2 synthesizing capabilities.

    Main Methods:

    • Utilized [14C]-arachidonic acid conversion to [14C]PGE2 and radioimmunoassay for PGE2 assessment.
    • Examined PGE2 synthesis in intact rabbit bladders and isolated microsomes from different bladder layers.
    • Investigated the localization of arachidonic acid metabolism within bladder tissues.

    Main Results:

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  • Rabbit bladder tissues, including the transitional epithelium and outer vesicular layer, demonstrated PGE2 synthesis.
  • PGE2 synthesis was enhanced by arachidonic acid and inhibited by indomethacin.
  • Arachidonic acid incorporation was localized to the tissue layer exposed to the labeled substrate, suggesting compartmentalized synthesis.

    • Conclusions:

    • The rabbit bladder is capable of synthesizing prostaglandin E2 (PGE2).
    • Evidence suggests that the transitional epithelium and outer layer of the rabbit bladder may possess separate systems for PGE2 synthesis.