0000000000123248

AUTHOR

Petra Seimetz

showing 1 related works from this author

Modulation of neuronal phospholipase D activity under depolarizing conditions

1999

Neuronal phospholipase D (PLD) activity was hypothesized to be involved in vesicle trafficking and endocytosis and, possibly, transmitter release. We here report that prolonged depolarization of rat hippocampal slices by potassium chloride (KCl) or 4-aminopyridine inhibited PLD activity. Similarly, PLD activity in rat cortical synaptosomes was significantly inhibited by depolarizing agents including veratridine and ouabain. Inhibition of calcium/calmodulin kinase II (CaMKII) which positively modulates synaptosomal PLD activity [Sarri et al. (1998) FEBS Lett. 440, 287-290] by KN-62 caused a further reduction of PLD activity in depolarized synaptosomes. Depolarization-induced inhibition of PL…

Phosphatidylinositol 45-DiphosphateTime FactorsBiophysicschemistry.chemical_elementCalciumHippocampusBiochemistryOuabainMembrane PotentialsPotassium Chloridechemistry.chemical_compoundStructural BiologyCa2+/calmodulin-dependent protein kinaseSynaptosomeElectrochemistryPhospholipase DGeneticsmedicineAnimalsPhospholipase D activityEnzyme InhibitorsRats WistarMolecular BiologyProtein Kinase CProtein Synthesis InhibitorsSynaptosomePhospholipase DCalcium/calmodulin-dependent protein kinase IINeomycinDepolarizationPhosphatidylinositol-45-bisphosphateCell BiologyRatsCell biologyenzymes and coenzymes (carbohydrates)chemistryCalcium-Calmodulin-Dependent Protein KinasesDepolarizationlipids (amino acids peptides and proteins)VeratridineSynaptosomesmedicine.drugFEBS Letters
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