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Prostanoid synthesis in peripheral nerve.

S K Goswami, R M Gould

    Biochimica Et Biophysica Acta
    |April 25, 1985
    PubMed
    Summary
    This summary is machine-generated.

    Nerve tissue synthesizes prostaglandins from arachidonic acid. Electrical stimulation and glutathione modulate prostaglandin E2 production in frog nerves, while aspirin and indomethacin inhibit synthesis in both rat and frog nerves.

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    Area of Science:

    • Neuroscience
    • Biochemistry
    • Pharmacology

    Background:

    • Prostanoids, derived from arachidonic acid, play crucial roles in physiological processes.
    • Understanding prostanoid synthesis in nervous tissue is vital for neurological research.

    Purpose of the Study:

    • To investigate the synthesis of radiolabeled prostanoids from [1-14C]arachidonic acid in rat and frog sciatic nerves.
    • To characterize the specific prostanoids produced and identify factors modulating their synthesis.

    Main Methods:

    • Incubation of rat and frog sciatic nerve homogenates and desheathed nerves with [1-14C]arachidonic acid.
    • Thin-layer chromatography was used to separate and identify prostanoid products.
    • Investigated the effects of electrical stimulation, glutathione, indomethacin, and aspirin on prostanoid synthesis.

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    Main Results:

    • Both rat and frog nerve preparations synthesized various prostaglandins, including prostaglandin E2, F2 alpha, D2, 6-ketoprostaglandin F1 alpha, and thromboxane B2.
    • Prostaglandin E2 was the predominant prostanoid in frog nerve preparations.
    • High-frequency electrical stimulation and low-concentration glutathione increased prostaglandin E2 formation in frog nerves.
    • High-concentration glutathione partially inhibited prostaglandin E2 synthesis.
    • Indomethacin and aspirin suppressed prostanoid synthesis in both species.

    Conclusions:

    • Sciatic nerves of rats and frogs are capable of synthesizing a range of prostanoids.
    • Prostaglandin E2 production in frog nerves can be modulated by electrical activity and glutathione levels.
    • Non-steroidal anti-inflammatory drugs (NSAIDs) like indomethacin and aspirin inhibit prostanoid synthesis in nerve tissue.