| Literature DB >> 2554125 |
Abstract
Two heart muscarinic responses are compared, the reduction of cyclic AMP concentration and the hydrolysis of phosphoinositides. It is suggested that the former is more important physiologically, since the latter is a slow response requiring much higher agonist concentrations. Inositol trisphosphate released from phosphoinositides is unlikely to produce a positive inotropic effect by releasing calcium from the sarcoplasmic reticulum. However, long term muscarinic effects may involve activation of protein kinase C by diacylglycerol released from phosphoinositides.Entities:
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Year: 1989 PMID: 2554125 DOI: 10.1007/BF00220774
Source DB: PubMed Journal: Mol Cell Biochem ISSN: 0300-8177 Impact factor: 3.396