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The action of riluzole, a neuroprotective drug, on cloned delayed rectifier K+ channels (Kv1.5 and Kv3.1) was examined using the whole-cell patch-clamp technique. Riluzole reversibly inhibited Kv1.5 currents in a concentration-dependent manner with an IC50 of 39.69+/-2.37 microM. G-protein inhibitors (pertussis toxin and GDPbetaS) did not prevent this(More)
Dopamine-stimulated adenylate cyclase activity in striatum and both dopamine- and histamine-stimulated adenylate cyclase activity in hypothalamus, frontal cortex and anterior limbic cortex declined by about 50% as rabbits aged from 5.5 months to 5.5 years of age. These changes were primarily in maximal response to amine although an additional component(More)
The effects of fluoxetine (Prozac) on the transient A-currents (IA) in primary cultured hippocampal neurons were examined using the whole-cell patch clamp technique. Fluoxetine did not significantly decrease the peak amplitude of whole-cell K+ currents, but it accelerated the decay rate of inactivation, and thus decreased the current amplitude at the end of(More)
The action of fluoxetine, a serotonin reuptake inhibitor, on the cloned neuronal rat Kv3.1 channels stably expressed in Chinese hamster ovary cells was investigated using the whole-cell patch-clamp technique. Fluoxetine reduced Kv3.1 whole-cell currents in a reversible, concentration-dependent manner, with an IC(50) value and a Hill coefficient of 13.4 muM(More)
Inhibitory activities of a series of analogs of SCH 23390 ((R)-(+)-7-chloro-8-hydroxy-3-methyl-1-phenyl-2,3,4,5-tetrahydro-1H-3- benzazepine) in which the 7-chloro group was substituted by bromo, fluoro, methyl and methoxy groups, respectively, were compared in three tests for D1 and DA1 dopamine (DA) receptor antagonism: inhibition of DA-induced renal(More)
The effect of fluoxetine (Prozac) on 5-hydroxytryptamine(3) (5-HT(3))-mediated currents in NCB-20 neuroblastoma cells was examined using the whole-cell patch-clamp technique. Fluoxetine produced a significant reduction of peak amplitude without altering the activation time course of 5-HT(3)-mediated currents. These effects were concentration-dependent, with(More)
The effects of rosiglitazone and troglitazone were examined on cloned Kv1.3 channels stably expressed in Chinese hamster ovary cells using the whole-cell configuration of the patch-clamp technique. Rosiglitazone decreased the Kv1.3 currents and accelerated the decay rate of current inactivation in a concentration-dependent manner with an IC(50) of 18.6(More)
Since the reformation of the National Health Insurance Act in 2000, the Health Insurance Review and Assessment Service (HIRA) in the Republic of Korea has performed quality assessments for healthcare providers. The HIRA Value Incentive Program (VIP), established in July 2007, provides incentives for excellent-quality institutions and disincentives for(More)