Svein Harald Mørkve

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The functional properties of spontaneous, glutamatergic EPSCs and non-NMDA receptors in AII amacrine cells were studied in whole cells and patches from slices of the rat retina using single and dual electrode voltage clamp recording. Pharmacological analysis verified that the EPSCs (Erev approximately 0 mV) were mediated exclusively by AMPA-type receptors.(More)
To extend the usefulness of rod bipolar cells for studies of chemical synaptic transmission, we have performed electrophysiological recordings from rod bipolar axon terminals in an in vitro slice preparation of the rat retina. Whole cell recordings from axon terminals and cell bodies were used to investigate the passive membrane properties of rod bipolar(More)
Whereas glutamate transporters in glial cells and postsynaptic neurons contribute significantly to re-uptake of synaptically released transmitter, the functional role of presynaptic glutamate transporters is poorly understood. Here, we used electrophysiological recording to examine the functional properties of a presynaptic glutamate transporter in rat(More)
The excitability of presynaptic terminals can be controlled by synaptic input that directly targets the terminals. Retinal rod bipolar axon terminals receive presynaptic input from different types of amacrine cells, some of which are glycinergic. Here, we have performed patch-clamp recordings from rod bipolar axon terminals in rat retinal slices. We used(More)
The properties of non-NMDA glutamate receptor channels in AII amacrine cells were studied by patch-clamp recording from rat retinal slices. Application of AMPA or kainate to intact cells evoked currents with no apparent desensitization (EC50 of 118 microM for AMPA and 169 microM for kainate). Application of AMPA to patches evoked desensitizing responses(More)
L-Glutamine (Gln) functions physiologically to balance the carbon and nitrogen requirements of tissues. It has been proposed that in cancer cells undergoing aerobic glycolysis, accelerated anabolism is sustained by Gln-derived carbons, which replenish the tricarboxylic acid (TCA) cycle (anaplerosis). However, it is shown here that in glioblastoma (GBM)(More)
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