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  • Title: Direct evidence for ATP release from non-adrenergic, non-cholinergic ("purinergic") nerves in the guinea-pig taenia coli and bladder.
    Author: Burnstock G, Cocks T, Kasakov L, Wong HK.
    Journal: Eur J Pharmacol; 1978 May 15; 49(2):145-9. PubMed ID: 658131.
    Abstract:
    Demonstration of release of ATP from smooth muscle preparations during stimulation of purinergic nerves is complicated by the difficulty in showing whether it comes from nerve or muscle. ATP released during relaxation of the guinea-pig taenia coli and contraction of bladder strips in response to purinergic nerve stimulation was measured in the superfusate using the luciferin-luciferase ATP assay method. The amount of ATP increased 2-6 fold during isometric responses to purinergic nerve stimulation. This release was blocked by tetrodotoxin but not by adrenergic nerve destruction with 6-hydroxydopamine. No significant release of ATP was detected during comparable responses elicited by direct muscle stimulation. These results provide further support for the purinergic nerve hypothesis.
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