The mechanisms of generation of self-sustained depolarizing plateau potentials (DPs) were studied in intracellular recordings in aminopyridine-induced ictal seizure foci in the motor cortex of the cat. In some experiments single-electrode voltage clamp techniques were used and intracellular pressure
Transsynaptic movement of endogenous zinc may play a key role in selective neuronal death after brain ischemia and prolonged seizures. As to the mechanism, we have reported recently that zinc-induced neuronal death occurs mainly by oxidative stress in cortical cultures. Here we present evidence
Phorbol esters activate protein kinase C and modulate a variety of downstream cell signaling pathways. 12-O-tetradecanoylphorbol-13-acetate (TPA) is a phorbol ester that induces differentiation or apoptosis in a variety of cell lines at low concentrations. A phase I dose escalation trial of TPA was
Synaptosomal-associated protein of 25 kDa (SNAP-25) is thought to play a key role in vesicle exocytosis and in the control of transmitter release. However, the precise mechanisms of action as well as the regulation of SNAP-25 remain unclear. Here we show by immunoprecipitation that activation of
The inhibitory effect of N-methyl-D-aspartate (NMDA) upon carbachol-stimulated phosphoinositide (PI) hydrolysis was studied in transverse hippocampal slices prepared from control and amygdaloid kindled rats. Kindling significantly increased the inhibitory effect of NMDA (10 microM) in slices
Vascular endothelium forms a continuous, semipermeable barrier that regulates the transvascular movement of hormones, macromolecules, and other solutes. Here, we describe a novel immediate early gene that is expressed selectively in vascular endothelial cells, verge (vascular early response gene).
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