Summary
The regulation of and the intracellular events following α1-aradrenergic receptor stimulation in the myocardium still remain to be disclosed. The effect of aradrenergic stimulation on phosphoinositide breakdown was studied in cultured neonatal rat ventricular myocytes. Phenylephrine (30 μM) stimulated inositolphosphates formation, but only in the presence of 10 mM LiCl this could be measured. The increase was antagonized by prazosin (1 μM) but not by propranolol (1 μM). The variability in proportional distribution of the three inositolphosphates is discussed.
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Abbreviations
- PIP2 :
-
Phosphatidylinositol 4,5-bisphosphate
- PI:
-
Phosphatidylinositol
- PI3 :
-
Inositol 1,4,5,-trisphosphate
- IP2 :
-
Inositol 1,4-bisphosphate
- IP1 :
-
Inositol 1-monophosphate
- DG:
-
Diacylglycerol
- PKC:
-
Calcium/phospholipid-dependent protein kinase
- PhE:
-
Phenylephrine
References
Brückner R, Mügge A, Scholz H: Existence and functional role of alphaj-adrenoceptors in the mammalian heart. J Mol Cell Cardiol 17: 639–645, 1985
Osnes JB, Aass H, Skomedal T: On adrenergic regulation of heart function: role of myocardial a-adrenoceptors. In: H Refsum and OD Mjös (eds) α-Adrenoceptor Blockers In Cardiovascular Disease. Churchill Livingstone, Edinburgh, London, Melbourne and New York, 1985, pp 69–102
Brown JH, Buxton IL, Brunton LL: α1-aradrenergic and muscarinic cholinergic stimulation of phosphoinositide hydrolysis in adult rat cardiomyocytes. Cir Res 57: 532–537, 1985
Poggioli J, Sulpice JC, Vassort G: Inositol phosphate production following aradrenergic, muscarinic or electrical stimulation in isolated rat heart. FEBS Lett 206: 292–298, 1986
Schmitz W, Scholz H, Scholz J, Steinfath M, Lohse M, Puurunen J, Schwabe U: Pertussis toxin does not inhibit the оц-adrenoceptor-mediated effect on inositol phosphate production in the heart. Eur J Pharmacol 134: 377–378, 1987
Hirata M, Suematsu E, Hashimoto T, Hamachi T, Koga T: Release of Ca2+ from a non-mitochondrial store site in peritoneal macrophages treated with saponin by inositol 1,4,5-trisphosphate. Biochem J 223: 229–236, 1984
Volpe P, Salviati G, DiVirgilio F, Pozzan T: Inositol 1,4,5-triphosphate induces calcium release from sarcoplasmic reticulum of skeletal muscle. Nature 316: 347–349, 1985
Berridge MJ: Inositoltrisphosphate and diacylglycerol as second messengers. Biochem J 220: 345–360, 1984
Yagev S, Heller M, Pinson A: Changes in cytoplasmic and lysosomal enzyme activities in cultured rat heart cells: the relationship to cell differentiation and cell population in culture. In Vitro 20: 893–898, 1984
Berridge MJ, Downes CP, Hanley MR: Lithium amplifies agonist-dependent phosphatidylinositol responses in brain and salivary glands. Biochem J 206: 587–595, 1982
Movsesian MA, Nishikawa M, Adelstein RS: Phosphorylation of phospholamban by calcium-activated, phospholipid-dependent protein kinase. J Biol Chem 259: 8029–8032, 1983
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© 1989 Kluwer Academic Publishers
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Meij, J.T.A., Lamers, J.M.J. (1989). Alpha-1-adrenergic stimulation of phosphoinositide breakdown in cultured neonatal rat ventricular myocytes. In: Van Der Vusse, G.J. (eds) Lipid Metabolism in Normoxic and Ischemic Heart. Developments in Molecular and Cellular Biochemistry, vol 5. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-1611-4_11
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DOI: https://doi.org/10.1007/978-1-4613-1611-4_11
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