Biomaterial Database

Potentiation by lithium of CMP-phosphatidate formation in carbachol-stimulated rat cerebral-cortical slices and its reversal by myo-inositol. 1989

P P Godfrey

M.R.C. Unit, Radcliffe Infirmary, Oxford, U.K.

This paper describes a rapid and simple method for measuring CMP-phosphatidate (CMP-PA; CDP-diacylglycerol), providing a novel assay for inositol phospholipid metabolism. Rat cerebral-cortical slices labelled with [14C]cytidine were incubated with the muscarinic cholinergic agonist carbachol in the presence of various concentrations of LiCl; 10 mM-LiCl greatly enhanced the carbachol-stimulated formation of [14C]CMP-PA over a 60 min incubation period. The potentiation by Li+ was concentration-dependent, with a maximal enhancement at 3 mM and half-maximal enhancement at 0.6 mM-LiCl. The enhancement by Li+ could be reversed by incubation with myo-inositol; a maximal effect was observed with 10 mM-inositol. A similar, though smaller, enhancement of CMP-PA concentrations in the presence of LiCl was observed in slices stimulated with noradrenaline, 5-hydroxytryptamine and K+. The results are discussed in relation to previously observed effects of Li+ on inositol phospholipid metabolism.

UI	MeSH Term	Description	Entries
D007294	Inositol	An isomer of glucose that has traditionally been considered to be a B vitamin although it has an uncertain status as a vitamin and a deficiency syndrome has not been identified in man. (From Martindale, The Extra Pharmacopoeia, 30th ed, p1379) Inositol phospholipids are important in signal transduction.	Myoinositol,Chiro-Inositol,Mesoinositol,Chiro Inositol
D008094	Lithium	An element in the alkali metals family. It has the atomic symbol Li, atomic number 3, and atomic weight [6.938; 6.997]. Salts of lithium are used in treating BIPOLAR DISORDER.	Lithium-7,Lithium 7
D008297	Male		Males
D009702	Nucleoside Diphosphate Sugars		Diphosphate Sugars, Nucleoside,Sugars, Nucleoside Diphosphate
D010716	Phosphatidylinositols	Derivatives of phosphatidic acids in which the phosphoric acid is bound in ester linkage to the hexahydroxy alcohol, myo-inositol. Complete hydrolysis yields 1 mole of glycerol, phosphoric acid, myo-inositol, and 2 moles of fatty acids.	Inositide Phospholipid,Inositol Phosphoglyceride,Inositol Phosphoglycerides,Inositol Phospholipid,Phosphoinositide,Phosphoinositides,PtdIns,Inositide Phospholipids,Inositol Phospholipids,Phosphatidyl Inositol,Phosphatidylinositol,Inositol, Phosphatidyl,Phosphoglyceride, Inositol,Phosphoglycerides, Inositol,Phospholipid, Inositide,Phospholipid, Inositol,Phospholipids, Inositide,Phospholipids, Inositol
D011919	Rats, Inbred Strains	Genetically identical individuals developed from brother and sister matings which have been carried out for twenty or more generations or by parent x offspring matings carried out with certain restrictions. This also includes animals with a long history of closed colony breeding.	August Rats,Inbred Rat Strains,Inbred Strain of Rat,Inbred Strain of Rats,Inbred Strains of Rats,Rat, Inbred Strain,August Rat,Inbred Rat Strain,Inbred Strain Rat,Inbred Strain Rats,Inbred Strains Rat,Inbred Strains Rats,Rat Inbred Strain,Rat Inbred Strains,Rat Strain, Inbred,Rat Strains, Inbred,Rat, August,Rat, Inbred Strains,Rats Inbred Strain,Rats Inbred Strains,Rats, August,Rats, Inbred Strain,Strain Rat, Inbred,Strain Rats, Inbred,Strain, Inbred Rat,Strains, Inbred Rat
D002217	Carbachol	A slowly hydrolyzed CHOLINERGIC AGONIST that acts at both MUSCARINIC RECEPTORS and NICOTINIC RECEPTORS.	Carbamylcholine,Carbacholine,Carbamann,Carbamoylcholine,Carbastat,Carbocholine,Carboptic,Doryl,Isopto Carbachol,Jestryl,Miostat,Carbachol, Isopto
D002540	Cerebral Cortex	The thin layer of GRAY MATTER on the surface of the CEREBRAL HEMISPHERES that develops from the TELENCEPHALON and folds into gyri and sulci. It reaches its highest development in humans and is responsible for intellectual faculties and higher mental functions.	Allocortex,Archipallium,Cortex Cerebri,Cortical Plate,Paleocortex,Periallocortex,Allocortices,Archipalliums,Cerebral Cortices,Cortex Cerebrus,Cortex, Cerebral,Cortical Plates,Paleocortices,Periallocortices,Plate, Cortical
D003567	Cytidine Diphosphate Diglycerides	The ester of diacylglycerol with the terminal phosphate of cytidine diphosphate. It serves as an intermediate in the biosynthesis of phosphatidylethanolamine and phosphatidylserine in bacteria.	CDP Diacylglycerols,CDP Diglycerides,Cytidine Diphosphodiacylglycerols,CDP-Diacylglycerol,CDP Diacylglycerol,Diacylglycerols, CDP,Diglycerides, CDP,Diglycerides, Cytidine Diphosphate,Diphosphate Diglycerides, Cytidine,Diphosphodiacylglycerols, Cytidine
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia