| Literature DB >> 8380559 |
M Yamada1, M Yamada1, M A Watson, E Richelson.
Abstract
Recently, we reported that the rat neurotensin receptor expressed in transfected Chinese hamster ovary cells (CHO-rNTR-10) mediates the hydrolysis of polyphosphoinositides. In this study, we show that neurotensin stimulated cyclic AMP formation in CHO-rNTR-10 cells in a dose-dependent manner (EC50 = 34 nM). Neurotensin also stimulated cyclic AMP formation in membranal preparations under Ca(2+)-free conditions. These results suggest that this cyclic AMP formation occurs from direct coupling of the neurotensin receptor to a type of GTP binding protein, mediating synthesis of cyclic AMP, and not from an increase in intracellular Ca2+ concentration from polyphosphoinositide hydrolysis.Entities:
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Year: 1993 PMID: 8380559 DOI: 10.1016/0922-4106(93)90064-g
Source DB: PubMed Journal: Eur J Pharmacol ISSN: 0014-2999 Impact factor: 4.432