Characterization of a Novel Tonic γ-Aminobutyric AcidA Receptor-Mediated Inhibition in Magnocellular Neurosecretory Neurons and Its Modulation by Glia
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چکیده
منابع مشابه
Neurosteroid modulation of benzodiazepine-sensitive GABAA tonic inhibition in supraoptic magnocellular neurons.
Interactions between neurosteroids and GABA receptors have attracted particular attention in the supraoptic nucleus (SON). Although GABA(A) receptors (GABA(A)R) mediate a sustained tonic inhibitory current (I(tonic)), as well as conventional phasic inhibitory postsynaptic currents (IPSCs, I(phasic)) in the SON, whether the steroid modulation on I(tonic) is present in SON magnocelluar neurosecre...
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An enhanced glutamate excitatory function within the hypothalamic supraoptic and paraventricluar nuclei is known to contribute to increased neurosecretory and presympathetic neuronal activity, and hence, neurohumoral activation, during heart failure (HF). Still, the precise mechanisms underlying enhanced glutamate-driven neuronal activity in HF remain to be elucidated. Here, we performed simult...
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Background. Many mechanisms are involved in pain transmission in the spinal cord. Therefore, combination of drugs acting on different kinds of mechanisms might be useful for analgesia. We investigated the interaction betweenγ-aminobutyric acid （GABA）B receptor agonist, baclofen, and N-methyl-D-aspartate （NMDA） receptor antagonist, AP-5, orα-amino-3-hydroxy-5-methylisoxazole-4-propionic acid ...
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Tonic GABAA receptor-mediated inhibition is typically generated by delta subunit-containing extrasynaptic receptors. Because the delta subunit is highly expressed in the thalamus, we tested whether thalamocortical (TC) neurons of the dorsal lateral geniculate nucleus (dLGN) and ventrobasal complex exhibit tonic inhibition. Focal application of gabazine (GBZ) (50 microM) revealed the presence of...
متن کاملEnhancement of g-Aminobutyric AcidA Receptor Activity by a-Chloralose
a-Chloralose is widely used as an anesthetic in the laboratory due to its minimal effects on autonomic and cardiovascular systems, yet little is known about its mechanism of action. We examined the effects of a-chloralose on g-aminobutyric acid type A (GABAA) receptor activity because recent studies have shown that several classes of general anesthetics modulate the function of this receptor. G...
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ژورنال
عنوان ژورنال: Endocrinology
سال: 2006
ISSN: 0013-7227,1945-7170
DOI: 10.1210/en.2006-0218