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Recently, the cloning of a novel preprotachykinin gene (PPT-C) has been reported. This gene codes for a novel peptide named hemokinin 1 (HK-1). In contrast with the known tachykinins, which are exclusively expressed in neuronal tissues, PPT-C mRNA was detected primarily in hematopoietic cells. In this study, we pharmacologically characterised the effects of HK-1 using three tachykinin monoreceptor...
Abstract. Two series of nociceptin (NC)-related peptides with or without replacement of the N-terminal Phe by Tyr have been investigated in an attempt to obtain compounds that interact with the NC receptor (ORL1) and classic opioid receptors. When tested for their ability to displace [3H]NCNH2 ([3H]nociceptin amide; ORL1 sites) or the selective opioid receptor ligands [3H]DAMGO (), [3H]deltorphin...
we studied the action of nociceptin (NC) on the atropine-resistant contractions of the guinea pig isolated bronchus evoked by the electrical field stimulation (EFS), an effect that is mediated by the activation of excitatory non adrenergic-non cholinergic (eNANC) nerves and the subsequent release of tachykinins. The functional site by which NC acts in this preparation was investigated using few different...
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