Results 21 to 30 of about 112,577,777 (211)

GABA-Independent GABAA Receptor Openings Maintain Tonic Currents [PDF]

, 2013
Activation of GABAA receptors (GABAARs) produces two forms of inhibition: ‘phasic’ inhibition generated by the rapid, transient activation of synaptic GABAARs by presynaptic GABA release, and tonic inhibition generated by the persistent activation of ...
Herd, Murray B, Belelli, D., Wlodarczyk, A. I., Sylantyev, S., Linthorst, Astrid C.E., Walker, Matthew C., Walker, M. C., Rusakov, Dmitri A, Lambert, Jeremy J, Wlodarczyk, Agnieszka I., Kersanté, Flavie, Walker, Matthew C, Semyanov, A., Semyanov, Alexey, Rusakov, Dmitri A., Rusakov, D. A., Herd, Murray B., Linthorst, A. C. E., Lambert, Jeremy J., Pavlov, I., Linthorst, Astrid C E, Lambert, J. J., Herd, M. B., Kersante, F., Wlodarczyk, Agnieszka I, Pavlov, Ivan, Sylantyev, Sergiy, Belelli, Delia   +27 more
core   +1 more source

The Mechanism of Enantioselective Neurosteroid Actions on GABA_A Receptors

Biomolecules, 2023
The neurosteroid allopregnanolone (ALLO) and pregnanolone (PREG), are equally effective positive allosteric modulators (PAMs) of GABAA receptors. Interestingly, the PAM effects of ALLO are strongly enantioselective, whereas those of PREG are not.
Hiroki Tateiwa, Satyanarayana M. Chintala, Ziwei Chen, Lei Wang, Fatima Amtashar, John Bracamontes, Allison L. Germann, Spencer R. Pierce, Douglas F. Covey, Gustav Akk, Alex S. Evers   +10 more
doaj   +1 more source

Actions of Agonists, Fipronil and Ivermectin on the Predominant In Vivo Splice and Edit Variant (RDLbd, I/V) of the Drosophila GABA Receptor Expressed in Xenopus laevis Oocytes [PDF]

, 2014
Ionotropic GABA receptors are the targets for several classes of insecticides. One of the most widely-studied insect GABA receptors is RDL (resistance to dieldrin), originally isolated from Drosophila melanogaster.
Philip Biggin, Suwanmanee, S, Musgaard, M, David Sattelle, Steven David Buckingham, Lees, K, Sattelle, D, Maria Musgaard, Siros Suwanmanee, Kristin Lees, Buckingham, SD, Biggin, P   +11 more
core   +2 more sources

Synaptic GABA release prevents GABA transporter type-1 reversal during excessive network activity. [PDF]

, 2015
GABA transporters control extracellular GABA, which regulates the key aspects of neuronal and network behaviour. A prevailing view is that modest neuronal depolarization results in GABA transporter type-1 (GAT-1) reversal causing non-vesicular GABA ...
Rusakov, Dmitri A., Walker, MC, Savtchenko, L, Pavlov, I, Megalogeni, M, Walker, Matthew C., Rusakov, DA, Savtchenko, Leonid, Pavlov, Ivan, Megalogeni, Maria   +9 more
core   +1 more source

Post-synaptic GABAA receptors potentiate transmission by recruiting CaV2 channels to their inputs

Cell Reports, 2023
Summary: We describe a retrograde synaptic signal at the C. elegans GABAergic neuromuscular junction. At this synapse, GABA release is controlled by two voltage-activated calcium channels (UNC-2/CaV2 and EGL-19/CaV1), and muscle responses are mediated by
Jian Zhao, Luna Gao, Stephen Nurrish, Joshua M. Kaplan   +3 more
doaj   +1 more source

Investigating the Role of Loop C Hydrophilic Residue 'T244' in the Binding Site of ρ1 GABAC Receptors via Site Mutation and Partial Agonism. [PDF]

PLoS ONE, 2016
The loop C hydrophilic residue, threonine 244 lines the orthosteric binding site of ρ1 GABAC receptors was studied by point mutation into serine, alanine and cysteine, and tested with GABA, some representative partial agonists and antagonists. Thr244 has
Moawiah M Naffaa, Nathan Absalom, V Raja Solomon, Mary Chebib, David E Hibbs, Jane R Hanrahan   +5 more
doaj   +1 more source

Anaesthetic impairment of immune function is mediated via GABA(A) receptors.

PLoS ONE, 2011
BackgroundGABA(A) receptors are members of the Cys-loop family of neurotransmitter receptors, proteins which are responsible for fast synaptic transmission, and are the site of action of wide range of drugs.
Daniel W Wheeler, Andrew J Thompson, Federico Corletto, Jill Reckless, Justin C T Loke, Nicolas Lapaque, Andrew J Grant, Pietro Mastroeni, David J Grainger, Claire L Padgett, John A O'Brien, Nigel G A Miller, John Trowsdale, Sarah C R Lummis, David K Menon, John S Beech   +15 more
doaj   +1 more source

GABA-A and GABA-B Receptors in Filial Imprinting Linked With Opening and Closing of the Sensitive Period in Domestic Chicks (Gallus gallus domesticus)

Frontiers in Physiology, 2018
Filial imprinting of domestic chicks has a well-defined sensitive (critical) period lasting in the laboratory from hatching to day 3. It is a typical model to investigate the molecular mechanisms underlying memory formation in early learning. We recently
Naoya Aoki, Shinji Yamaguchi, Toshiyuki Fujita, Chihiro Mori, Chihiro Mori, Eiko Fujita, Toshiya Matsushima, Koichi J. Homma   +7 more
doaj   +1 more source

Huntington's disease leads to decrease of GABA-A tonic subunits in the D2 neostriatal pathway and their relocalization into the synaptic cleft

Neurobiology of Disease, 2018
GABA is a widely distributed inhibitory neurotransmitter. GABA-A receptors are hetero-pentameric channels assembled in multiple combinations from 19 available subunits; this diversity mediates phasic and tonic inhibitory synaptic potentials. Whereas GABA-
Abraham Rosas-Arellano, Carlos Tejeda-Guzmán, Enrique Lorca-Ponce, Lourdes Palma-Tirado, Carola A. Mantellero, Patricio Rojas, Fanis Missirlis, Maite A. Castro   +7 more
doaj   +1 more source

Stimulation of TM3 Leydig cell proliferation via GABA_A receptors: A new role for testicular GABA

Reproductive Biology and Endocrinology, 2004
The neurotransmitter gamma-aminobutyric acid (GABA) and subtypes of GABA receptors were recently identified in adult testes. Since adult Leydig cells possess both the GABA biosynthetic enzyme glutamate decarboxylase (GAD), as well as GABAA and GABAB ...
Krieger Annette, Thalhammer Andrea, Doepner Richard FG, Geigerseder Christof, Mayerhofer Artur   +4 more
doaj   +1 more source