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BACKGROUND The involvement of the L-arginine/nitric oxide (NO)/cyclic guanosine monophosphate (cGMP) pathway in antinociception has been implicated as a molecular mechanism of antinociception produced by several antinociceptive agents, including μ-, κ-, or δ-opioid receptor agonists, nonsteroidal analgesics, cholinergic agonist, and α2C adrenoceptor(More)
The effects of neuropeptide Y on the intracellular level of Ca2+ ([Ca2+]i) were studied in cultured rat adrenal chromaffin cells loaded with fura-2. A proportion (16%) of cells exhibited spontaneous rhythmic [Ca2+]i oscillations. In silent cells, oscillations could be induced by forskolin and 1,9-dideoxyforskolin. This action of forskolin was not modified(More)
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