Academic literature on the topic 'GABAergic/glycinergic synaptic transmission'

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Journal articles on the topic "GABAergic/glycinergic synaptic transmission"

1

Donato, Roberta, and Andrea Nistri. "Relative Contribution by GABA or Glycine to Cl−-Mediated Synaptic Transmission on Rat Hypoglossal Motoneurons In Vitro." Journal of Neurophysiology 84, no. 6 (2000): 2715–24. http://dx.doi.org/10.1152/jn.2000.84.6.2715.

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The relative contribution by GABA and glycine to synaptic transmission of motoneurons was investigated using an hypoglossus nucleus slice preparation from neonatal rats. Spontaneous, miniature, or electrically evoked postsynaptic currents (sPSCs, mPSCs, ePSCs, respectively) mediated by glycine or GABA were recorded under whole cell voltage clamp after blocking excitatory glutamatergic transmission with kynurenic acid. The overall majority of Cl−-mediated sPSCs was glycinergic, while only one-third was GABAergic; 70 ± 10% of mPSCs were glycinergic while 22 ± 8% were GABAergic. Tetrodotoxin (TTX
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2

Donato, Roberta, and Andrea Nistri. "Differential Short-Term Changes in GABAergic or Glycinergic Synaptic Efficacy on Rat Hypoglossal Motoneurons." Journal of Neurophysiology 86, no. 2 (2001): 565–74. http://dx.doi.org/10.1152/jn.2001.86.2.565.

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Using whole cell patch-clamp recording from hypoglossal motoneurons of a neonatal rat brain slice preparation, we investigated short-term changes in synaptic transmission mediated by GABA or glycine. In 1.5 mM extracellular Ca2+[Ca2+]o, pharmacologically isolated GABAergic or glycinergic currents were elicited by electrical stimulation of the reticular formation. At low stimulation frequency, glycinergic currents were larger and faster than GABAergic ones. GABAergic currents were strongly facilitated by pulse trains at 5 or 10 Hz without apparent depression. This phenomenon persisted after pha
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3

Awatramani, Gautam B., Rostislav Turecek, and Laurence O. Trussell. "Staggered Development of GABAergic and Glycinergic Transmission in the MNTB." Journal of Neurophysiology 93, no. 2 (2005): 819–28. http://dx.doi.org/10.1152/jn.00798.2004.

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Maturation of some brain stem and spinal inhibitory systems is characterized by a shift from GABAergic to glycinergic transmission. Little is known about how this transition is expressed in terms of individual axonal inputs and synaptic sites. We have explored this issue in the rat medial nucleus of the trapezoid body (MNTB). Synaptic responses at postnatal days 5–7 (P5–P7) were small, slow, and primarily mediated by GABAA receptors. By P8–P12, an additional, faster glycinergic component emerged. At these ages, GABAA, glycine, or both types of receptors mediated transmission, even at single sy
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4

Sebe, Joy Y., Erika D. Eggers, and Albert J. Berger. "Differential Effects of Ethanol on GABAA and Glycine Receptor-Mediated Synaptic Currents in Brain Stem Motoneurons." Journal of Neurophysiology 90, no. 2 (2003): 870–75. http://dx.doi.org/10.1152/jn.00119.2003.

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Ethanol potentiates glycinergic synaptic transmission to hypoglossal motoneurons (HMs). This effect on glycinergic transmission changes with postnatal development in that juvenile HMs (P9–13) are more sensitive to ethanol than neonate HMs (P1–3). We have now extended our previous study to investigate ethanol modulation of synaptic GABAA receptors (GABAARs), because both GABA and glycine mediate inhibitory synaptic transmission to brain stem motoneurons. We tested the effects of ethanol on GABAergic and glycinergic miniature inhibitory postsynaptic currents (mIPSCs) recorded from neonate and ju
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5

Liu, Tao, Tsugumi Fujita, and Eiichi Kumamoto. "Acetylcholine and norepinephrine mediate GABAergic but not glycinergic transmission enhancement by melittin in adult rat substantia gelatinosa neurons." Journal of Neurophysiology 106, no. 1 (2011): 233–46. http://dx.doi.org/10.1152/jn.00838.2010.

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GABAergic and glycinergic inhibitory synaptic transmissions in substantia gelatinosa (SG; lamina II of Rexed) neurons of the spinal dorsal horn play an important role in regulating nociceptive transmission from the periphery. It has not yet been well known whether each of the inhibitory transmissions plays a distinct role in the regulation. We report an involvement of neurotransmitters in GABAergic but not glycinergic transmission enhancement produced by the PLA2 activator melittin, where the whole-cell patch-clamp technique is applied to the SG neurons of adult rat spinal cord slices. Glycine
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6

Schubert, Timm, Daniel Kerschensteiner, Erika D. Eggers, et al. "Development of Presynaptic Inhibition Onto Retinal Bipolar Cell Axon Terminals Is Subclass-Specific." Journal of Neurophysiology 100, no. 1 (2008): 304–16. http://dx.doi.org/10.1152/jn.90202.2008.

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Synaptic integration is modulated by inhibition onto the dendrites of postsynaptic cells. However, presynaptic inhibition at axonal terminals also plays a critical role in the regulation of neurotransmission. In contrast to the development of inhibitory synapses onto dendrites, GABAergic/glycinergic synaptogenesis onto axon terminals has not been widely studied. Because retinal bipolar cells receive subclass-specific patterns of GABAergic and glycinergic presynaptic inhibition, they are a good model for studying the development of inhibition at axon terminals. Here, using whole cell recording
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7

Liu, Tao, Tsugumi Fujita, Terumasa Nakatsuka, and Eiichi Kumamoto. "Phospholipase A2 Activation Enhances Inhibitory Synaptic Transmission in Rat Substantia Gelatinosa Neurons." Journal of Neurophysiology 99, no. 3 (2008): 1274–84. http://dx.doi.org/10.1152/jn.01292.2007.

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Phospholipase A2 (PLA2) activation enhances glutamatergic excitatory synaptic transmission in substantia gelatinosa (SG) neurons, which play a pivotal role in regulating nociceptive transmission in the spinal cord. By using melittin as a tool to activate PLA2, we examined the effect of PLA2 activation on spontaneous inhibitory postsynaptic currents (sIPSCs) recorded at 0 mV in SG neurons of adult rat spinal cord slices by use of the whole cell patch-clamp technique. Melittin enhanced the frequency and amplitude of GABAergic and glycinergic sIPSCs. The enhancement of GABAergic but not glycinerg
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8

Gao, Bao-Xi, Christian Stricker, and Lea Ziskind-Conhaim. "Transition From GABAergic to Glycinergic Synaptic Transmission in Newly Formed Spinal Networks." Journal of Neurophysiology 86, no. 1 (2001): 492–502. http://dx.doi.org/10.1152/jn.2001.86.1.492.

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The role of glycinergic and GABAergic systems in mediating spontaneous synaptic transmission in newly formed neural networks was examined in motoneurons in the developing rat spinal cord. Properties of action potential–independent miniature inhibitory postsynaptic currents (mIPSCs) mediated by glycine and GABAA receptors (GlyR and GABAAR) were studied in spinal cord slices of 17- to 18-day-old embryos ( E17–18) and 1- to 3-day-old postnatal rats ( P1–3). mIPSC frequency and amplitude significantly increased after birth, while their decay time decreased. To determine the contribution of glycine
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9

McMenamin, Caitlin A., Laura Anselmi, R. Alberto Travagli, and Kirsteen N. Browning. "Developmental regulation of inhibitory synaptic currents in the dorsal motor nucleus of the vagus in the rat." Journal of Neurophysiology 116, no. 4 (2016): 1705–14. http://dx.doi.org/10.1152/jn.00249.2016.

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Prior immunohistochemical studies have demonstrated that at early postnatal time points, central vagal neurons receive both glycinergic and GABAergic inhibitory inputs. Functional studies have demonstrated, however, that adult vagal efferent motoneurons receive only inhibitory GABAergic synaptic inputs, suggesting loss of glycinergic inhibitory neurotransmission during postnatal development. The purpose of the present study was to test the hypothesis that the loss of glycinergic inhibitory synapses occurs in the immediate postnatal period. Whole cell patch-clamp recordings were made from dorsa
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10

Shao, Mei, June C. Hirsch, and Kenna D. Peusner. "Emergence of Action Potential Generation and Synaptic Transmission in Vestibular Nucleus Neurons." Journal of Neurophysiology 96, no. 3 (2006): 1215–26. http://dx.doi.org/10.1152/jn.00180.2006.

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Principal cells of the chick tangential nucleus are vestibular nucleus neurons in the hindbrain. Although detailed information is available on the morphogenesis of principal cells and synaptogenesis of primary vestibular fibers, this is the first study of their early functional development, when vestibular terminals emerge at embryonic days 10 and 13 (E10 and E13). At E10, 60% of principal cells generated spikes on depolarization, whereas 50% exhibited excitatory postsynaptic currents (EPSCs) on vestibular-nerve stimulation. The frequency was 0.2 Hz for glutamatergic spontaneous EPSCs (sEPSCs)
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