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The present study is concerned with the ability of muscarinic actions of acetylcholine (ACh) to modulate glutamate and γ-aminobutyric acid (GABA)-mediated synaptic transmission in the in vitro rat auditory cortex. Whole-cell patch clamp recordings were obtained from layer II-III pyramidal neurons, and the fast-EPSP (AMPA/kainate), fast-IPSP (GABA A ), and slow-IPSP (GABA B ), were...
AbstractThe present study examines the ability of muscarinic receptor activation to modulate glutamatergic responses in the in vitro rat auditory cortex. Whole-cell patch-clamp recordings were obtained from layer II-III pyramidal neurons and responses elicited by either stimulation of deep gray matter or iontophoretic application of glutamate receptor agonists. Iontophoresis of the muscarinic agonist...
In vitro rat hypothalamic slices were used to examine the ability of neuropeptide Y (NPY), and the putative Y 1 and Y 2 receptor agonists [Pro 34 ]NPY and [C 2 ]NPY, to modify spontaneous single-neuron discharge in the paraventricular nucleus (PVN). NPY and [Pro 34 ]NPY, at high concentrations (1500 nM), decreased discharge rates. At intermediate...
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