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Showing 1-30 of 39 results for "G002" within Papers
Dmytro Isaev et al.
Journal of neurophysiology, 94(4), 2987-2992 (2005-07-08)
Previous developmental studies in vitro suggested that the inhibitory neurotransmitter GABA exerts depolarizing and excitatory actions on the immature neurons and that depolarizing GABA is causally linked to ictal activity during the first weeks of postnatal life. However, remarkably little
Frederik Rode et al.
European journal of pharmacology, 516(2), 131-138 (2005-06-07)
Gamma aminobutyric acid (GABA) plays a major role in the central hyperexcitabilty associated with nerve damage. The precise antinociceptive actions mediated by GABA(A) receptor agonists remain unclear as previous studies have shown mixed results in neuropathic pain models. Thus, various
Teng-Fei Ma et al.
PloS one, 7(4), e35001-e35001 (2012-04-27)
The recent history of activity input onto granule cells (GCs) in the main olfactory bulb can affect the strength of lateral inhibition, which functions to generate contrast enhancement. However, at the plasticity level, it is unknown whether and how the
J W Polson et al.
American journal of physiology. Regulatory, integrative and comparative physiology, 293(5), R1954-R1960 (2007-09-07)
Microinjection of angiotensin II into the nucleus tractus solitarii attenuates the baroreceptor reflex-mediated bradycardia by inhibiting both vagal and cardiac sympathetic components. However, it is not known whether the baroreflex modulation of other sympathetic outputs (i.e., noncardiac) also are inhibited
Mansoor Abdul et al.
Acta oncologica (Stockholm, Sweden), 47(8), 1546-1550 (2008-07-09)
In prostate cancer, gamma-aminobutyric acid (GABA) has been previously reported to increase cellular proliferation via the ionotropic GABAa receptor (GABAar) and to promote cellular invasiveness via the metabotropic GABAb receptor. In this study, we have investigated, by immunohistochemistry, GABAar levels
Valerie Voigt et al.
The Journal of pharmacy and pharmacology, 65(4), 582-590 (2013-03-16)
The pyridine alkaloid arecaidine is an ingredient of areca nut preparations. It is responsible for many physiological effects observed during areca nut chewing. However, the mechanism underlying its oral bioavailability has not yet been studied. We investigated whether the Hāŗ-coupled
Mathias Dutschmann et al.
The European journal of neuroscience, 24(4), 1071-1084 (2006-08-26)
Lesion or pharmacological manipulation of the dorsolateral pons can transform the breathing pattern to apneusis (pathological prolonged inspiration). Apneusis reflects a disturbed inspiratory off-switch mechanism (IOS) leading to a delayed phase transition from inspiration to expiration. Under intact conditions the
Roman Tyzio et al.
Annals of neurology, 66(2), 209-218 (2009-09-11)
The mechanisms of epileptogenesis in Sturge-Weber syndrome (SWS) are unknown. We explored the properties of neurons from human pediatric SWS cortex in vitro and tested in particular whether gamma-aminobutyric acid (GABA) excites neurons in SWS cortex, as has been suggested
Linshan Shang et al.
PloS one, 5(4), e10092-e10092 (2010-04-21)
Advanced glycation end-products (AGEs) have been implicated in diverse pathological settings including diabetes, inflammation and acute ischemia/reperfusion injury in the heart. AGEs interact with the receptor for AGEs (RAGE) and transduce signals through activation of MAPKs and proapoptotic pathways. In
N G Bowery et al.
Experientia, 34(9), 1193-1195 (1978-09-15)
The GABA-mimetic activities of 4 analogues muscimol, isonipecotic acid, isoguvacine and N-methyl isoguvacine have been examined at the GABA receptor in the rat isolated superior cervical ganglion. The depolarizing action of all 4 analogues could be selectively antagonized by bicuculline
Biochemical pharmacology of GABAergic agonists.
S J Enna et al.
Life sciences, 24(19), 1727-1737 (1979-05-07)
Structure-activity studies on the inhibition of GABA binding to rat brain membranes by muscimol and related compounds.
P Krogsgaard-Larsen et al.
Journal of neurochemistry, 30(6), 1377-1382 (1978-06-01)
Marta Montero-Crespo et al.
eLife, 9 (2020-07-22)
The hippocampal CA1 field integrates a wide variety of subcortical and cortical inputs, but its synaptic organization in humans is still unknown due to the difficulties involved studying the human brain via electron microscope techniques. However, we have shown that
Richard F G Doepner et al.
Neuroendocrinology, 81(6), 381-390 (2005-11-09)
Gamma-aminobutyric acid (GABA) is an emerging signalling molecule in endocrine organs, since it is produced by endocrine cells and acts via GABA(A) receptors in a paracrine/autocrine fashion. Testicular Leydig cells are producers and targets for GABA. These cells express GABA(A)
Ke-Zhong Shen et al.
The Journal of physiology, 573(Pt 3), 697-709 (2006-04-15)
The subthalamic nucleus (STN) plays an important role in movement control by exerting its excitatory influence on the substantia nigra pars reticulata (SNR), a major output structure of the basal ganglia. Moreover, excessive burst firing of SNR neurons seen in
Tero Viitanen et al.
The Journal of physiology, 588(Pt 9), 1527-1540 (2010-03-10)
GABAergic excitatory [K(+)](o) transients can be readily evoked in the mature rat hippocampus by intense activation of GABA(A) receptors (GABA(A)Rs). Here we show that these [K(+)](o) responses induced by high-frequency stimulation or GABA(A) agonist application are generated by the neuronal
Abdallah Hayar et al.
Journal of neurophysiology, 98(2), 1052-1056 (2007-06-15)
In rat olfactory bulb slices, external tufted (ET) cells spontaneously generate spike bursts. Although ET cell bursting is intrinsically generated, its strength and precise timing may be regulated by synaptic input. We tested this hypothesis by analyzing whether the burst
Roman Tyzio et al.
Epilepsia, 48 Suppl 5, 96-105 (2007-10-04)
The timing of the developmental switch in the GABA(A) mediated responses from excitatory to inhibitory was studied in Wistar rat CA3 hippocampal pyramidal cells using gramicidin perforated patch-clamp and extracellular recordings. Gramicidin perforated patch recordings revealed a gradual developmental shift
Nima Naderi et al.
Neurochemical research, 36(8), 1520-1525 (2011-04-26)
Cannabinoid system plays an important role in controlling neuronal excitability and brain function. On the other hand, modulation of gamma-aminobutyric acid (GABA) transmission is one of the initial strategies for the treatment of seizure. The aim of the present study
Kai Y Fan et al.
The Journal of neuroscience : the official journal of the Society for Neuroscience, 32(40), 13718-13728 (2012-10-05)
The symptoms of Parkinson's disease (PD) are related to changes in the frequency and pattern of activity in the reciprocally connected GABAergic external globus pallidus (GPe) and glutamatergic subthalamic nucleus (STN). In idiopathic and experimental PD, the GPe and STN
Laura Lagostena et al.
The Journal of neuroscience : the official journal of the Society for Neuroscience, 30(3), 885-893 (2010-01-22)
GABA, the main inhibitory transmitter in adulthood, early in postnatal development exerts a depolarizing and excitatory action. This effect, which results from a high intracellular chloride concentration ([Cl(-)](i)), promotes neuronal growth and synaptogenesis. During the second postnatal week, the developmental
Laurence Desrues et al.
Peptides, 29(5), 727-734 (2008-03-22)
Cultured rat cortical astrocytes express two types of urotensin II (UII) binding sites: a high affinity site corresponding to the UT (GPR14) receptor and a low affinity site that has not been fully characterized. Activation of the high affinity site
Simon McMullan et al.
Brain research, 1439, 34-43 (2012-01-24)
The tonic activity of bulbospinal neurones in the rostral ventrolateral medulla (RVLM) is thought to underlie basal sympathetic nerve activity. A key research objective is to delineate the mechanisms that contribute to the firing of these neurones. In the current
Jin Kyung Kim et al.
Nature communications, 9(1), 4184-4184 (2018-10-12)
Gamma-aminobutyric acid (GABA) is the principal inhibitory neurotransmitter in the brain; however, the roles of GABA in antimicrobial host defenses are largely unknown. Here we demonstrate that GABAergic activation enhances antimicrobial responses against intracellular bacterial infection. Intracellular bacterial infection decreases
Emilia Leszkowicz et al.
The European journal of neuroscience, 35(9), 1433-1445 (2012-04-11)
The olfactory bulb differs from other brain regions by its use of bidirectional synaptic transmission at dendrodendritic reciprocal synapses. These reciprocal synapses provide tight coupling of inhibitory feedback from granule cell interneurons to mitral cell projection neurons in the accessory
Yumi Kim et al.
The Korean journal of physiology & pharmacology : official journal of the Korean Physiological Society and the Korean Society of Pharmacology, 22(6), 721-729 (2018-11-08)
GABAergic control over dopamine (DA) neurons in the substantia nigra is crucial for determining firing rates and patterns. Although GABA activates both GABAA and GABAB receptors distributed throughout the somatodendritic tree, it is currently unclear how regional GABA receptors in
Meijun Ye et al.
Sleep, 32(7), 879-887 (2009-07-31)
The pedunculopontine nucleus (PPN) is part of the cholinergic arm of the reticular activating system, which is mostly active during waking and REM sleep. GABAergic modulation of this area appears to regulate sleep-wake cycles. Eszopiclone (ESZ), a nonbenzodiazepine hypnotic agent
Alain Delpy et al.
The Journal of physiology, 586(4), 1059-1075 (2007-12-22)
Early in development, GABA and glycine exert excitatory action that turns to inhibition due to modification of the chloride equilibrium potential (E(Cl)) controlled by the KCC2 and NKCC1 transporters. This switch is thought to be due to a late expression
Mark D Kaji et al.
British journal of pharmacology, 172(15), 3737-3747 (2015-04-09)
Cys-loop GABA receptors represent important targets for human chemotherapeutics and insecticides and are potential targets for novel anthelmintics (nematicides). However, compared with insect and mammalian receptors, little is known regarding the pharmacological characteristics of nematode Cys-loop GABA receptors. Here we
Collin J Lobb et al.
Journal of neurophysiology, 104(1), 403-413 (2010-05-07)
Dopaminergic neurons are subject to a significant background GABAergic input in vivo. The presence of this GABAergic background might be expected to inhibit dopaminergic neuron firing. However, dopaminergic neurons are not all silent but instead fire in single-spiking and burst
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