CGP 55845 hydrochloride
Chemical Name: (2S)-3-[[(1S)-1-(3,4-Dichlorophenyl)ethyl]amino-2-hydroxypropyl](phenylmethyl)phosphinic acid hydrochloride
Purity: ≥98%
Biological Activity
CGP 55845 hydrochloride is a potent, selective GABAB receptor antagonist (IC50 = 5 nM) that prevents agonist binding (pKi = 8.35) and inhibits GABA and glutamate release (pEC50 values are 8.08 and 7.85 respectively). Inhibits GABAB responses to baclofen (IC50 = 130 nM in an isoproterenol assay) and potentiates the hypoglycemic response to glucose in vitro.Technical Data
The technical data provided above is for guidance only.
For batch specific data refer to the Certificate of Analysis.
Tocris products are intended for laboratory research use only, unless stated otherwise.
Additional Information
Background References
-
High-throughput genotoxicity assay identifies antioxidants as inducers of DNA damage response and cell death.
Fox JT, Sakamuru S, Huang R
Proc. Natl. Acad. Sci. U.S.A., 2012;109(14):5423-8. -
Neurogliaform cells dynamically regulate somatosensory integration via synapse-specific modulation.
Chittajallu, Ramesh, Pelkey, Kenneth, McBain, Chris J
Nat Neurosci, 2013;16(1):13-5. -
Cell type-specific properties of subicular GABAergic currents shape hippocampal output firing mode.
Panuccio, Gabriell, Vicini, Stefano, Avoli, Massimo
PLoS ONE, 2012;7(12):e50241. -
gamma-Aminobutyric Acid Type B (GABAB) Receptor Expression Is Needed for Inhibition of N-type (Cav2.2) Calcium Channels by Analgesic alpha-Conotoxins.
Cuny H, de Faoite A, Huynh TG, Yasuda T, Berecki G, Adams DJ
J. Biol. Chem., 2012;287(28):23948-57. -
Impaired chemosensitivity of mouse dorsal raphe serotonergic neurons overexpressing serotonin 1A (Htr1a) receptors.
Baccini G, Mlinar B, Audero E, Gross C, Corradetti R
PLoS ONE, 2012;7(9):e45072. -
Central amygdala circuits mediate hyperalgesia in alcohol-dependent rats
EM Avegno, TD Lobell, CA Itoga, BB Baynes, AM Whitaker, MM Weera, S Edwards, JW Middleton, NW Gilpin
J. Neurosci., 2018;0(0):. -
Evidence for pharmacologically distinct GABAB receptors associated with cAMP production in rat brain.
Cunninghan and Enna
Brain Res., 1996;720:220 -
The GABAB antagonist CGP 55845A reduces presynaptic GABA1 actions in neurons of the rat in vitro.
Deisz
Neuroscience, 1999;93:1241 -
GABA and glutamate release affected by GABAB receptor antagonists with similar potency: no evidence for pharmacologically different presynaptic receptors.
Waldmeier et al.
Br.J.Pharmacol., 1994;113:1515 -
Neurotransmitter mechanisms mediating low-glucose signalling in cocultures and fresh tissue slices of rat carotid body.
Zhang et al.
J.Physiol., 2007;578:735 -
Effects of subtype-selective group I mGluR antagonists on synchronous activity induced by 4-aminopyridine/CGP 55845 in adult guinea pig hippocampal slices.
Salah and Perkins
Neuropharmacology, 2008;55:47 -
Potent, orally active GABAB receptor antagonists.
Froestl et al.
Pharmacol.Rev.Comm., 1996;8:127 -
Brainstem activation of GABAB receptors in the nucleus tractus solitarius increases gastric motility
L Bellusci, E Kim, S Garcia DuB, RA Gillis, S Vicini, N Sahibzada
Frontiers in Neuroscience, 2022;16(0):961042.
Product Datasheets
Reconstitution Calculator
Molarity Calculator
Citations for CGP 55845 hydrochloride
The citations listed below are publications that use Tocris products. Selected citations for CGP 55845 hydrochloride include:
105 Citations: Showing 1 - 10
-
Oxytocin in the anterior cingulate cortex attenuates neuropathic pain and emotional anxiety by inhibiting presynaptic long-term potentiation
Authors: Li Et al.
Cell Rep 2021;36:109411
-
Axonal mechanisms mediating γ-aminobutyric acid receptor type A (GABA-A) inhibition of striatal dopamine release.
Authors: Kramer Et al.
ELife 2020;9:e55729
-
Functional Dissection of Basal Ganglia Inhibitory Inputs onto Substantia Nigra Dopaminergic Neurons
Authors: Evans Et al.
Cell Rep 2020;32:108156
-
Electrophysiological evaluation of extracellular spermine and alkaline pH on synaptic human GABAA receptors.
Authors: Limó n Et al.
Transl Psychiatry 2019;9:218
-
Synapse-specific opioid modulation of thalamo-cortico-striatal circuits.
Authors: Birdsong Et al.
Elife 2019;8
-
GABARAPs dysfunction by autophagy deficiency in adolescent brain impairs GABAA receptor trafficking and social behavior.
Authors: Hui Et al.
Sci Adv 2019;5:eaau8237
-
Activation of Astrocytic μ-Opioid Receptor Causes Conditioned Place Preference.
Authors: Nam Et al.
Cell Rep 2019;28:1154
-
Secreted Amyloid Precursor Protein-Alpha Promotes Arc Protein Synthesis in Hippocampal Neurons.
Authors: Livingstone Et al.
Front Mol Neurosci 2019;12:198
-
A hippocampal circuit linking dorsal CA2 to ventral CA1 critical for social memory dynamics.
Authors: Meira Et al.
Nat.Commun. 2018;9:4163
-
Salicylate-Induced Suppression of Electrically Driven Activity in Brain Slices from the Auditory Cortex of Aging Mice.
Authors: Namikawa Et al.
Front Aging Neurosci 2018;9:395
-
Potassium channels contribute to activity-dependent regulation of dendritic inhibition.
Authors: Chang and Higley
Physiol Rep 2018;6:e13747
-
A circuit from hippocampal CA2 to lateral septum disinhibits social aggression.
Authors: Leroy Et al.
Nature 2018;564:213
-
JIP1-Mediated JNK Activation Negatively Regulates Synaptic Plasticity and Spatial Memory.
Authors: Morel Et al.
J Neurosci 2018;38:3708
-
DA Cells Differentially Regulate Striatal Cholinergic Transmission across Regions through Corelease of DA and Glutamate.
Authors: Cai and Ford
Cell Rep 2018;25:3148
-
Local GABAA receptor mediated suppression of DA release within the nucleus accumbens.
Authors: Brodnik Et al.
ACS Chem Neurosci 2018;17:1978
-
LTP at Hilar Mossy Cell-Dentate Granule Cell Synapses Modulates Dentate Gyrus Output by Increasing Excitation/Inhibition Balance.
Authors: Hashimotodani Et al.
Neuron 2017;95:928
-
Proximodistal Heterogeneity of Hippocampal CA3 Pyramidal Neuron Intrinsic Properties, Connectivity, and Reactivation during Memory Recall.
Authors: Sun Et al.
Neuron 2017;95:656
-
Input-Timing-Dependent Plasticity in the Hippocampal CA2 Region and Its Potential Role in Social Memory.
Authors: Leroy Et al.
Neuron 2017;95:1089
-
Chronic Loss of CA2 Transmission Leads to Hippocampal Hyperexcitability.
Authors: Boehringer Et al.
Neuron 2017;94:642
-
Monoaminergic modulation of GABAergic transmission onto cerebellar globular cells.
Authors: Hirono
Neuropharmacology 2017;118:79
-
Differential Somatic Ca2+ Channel Profile in Midbrain DArgic Neurons
Authors: Philippart Et al.
The Journal of Neuroscience 2016;6:7234
-
Nicotinic and opioid receptor regulation of striatal DA D2-receptor mediated transmission
Authors: Mamaligas Et al.
Scientific Reports 2016;6:37834
-
The chemokine CXCL16 modulates neurotransmitter release in hippocampal CA1 area
Authors: Di Castro Et al.
Scientific Reports 2016;6:34633
-
Increased GABAB receptor signaling in a rat model for schizophrenia
Authors: Selten Et al.
Scientific Reports 2016;6:34240
-
Layer-specific potentiation of network GABAergic inhibition in the CA1 area of the hippocampus.
Authors: Colavita Et al.
Sci Rep 2016;6:28454
-
Presynaptic GABAB receptors reduce transmission at parabrachial synapses in the lateral central amygdala by inhibiting N-type calcium channels.
Authors: Delaney and Crane
Sci Rep 2016;6:19255
-
Activation of Muscarinic M1 Acetylcholine Receptors Induces Long-Term Potentiation in the Hippocampus.
Authors: Dennis Et al.
J Neurophysiol 2016;26:414
-
Involvement of GABAB Receptor Signaling in Antipsychotic-like Action of the Novel Orthosteric Agonist of the mGlu4 Receptor, LSP4-2022
Authors: Wozniak Et al.
Current Neuropharmacology 2016;14:413
-
Vasculo-neuronal coupling: retrograde vascular communication to brain neurons
Authors: Jung Kim Et al.
The Journal of Neuroscience 2016;14:12624
-
Non-additive modulation of synaptic transmission by serotonin, adenosine, and cholinergic modulators in the sensory thalamus.
Authors: Yang Et al.
Front Cell Neurosci 2015;9:60
-
IL-1 interacts with ethanol effects on GABAergic transmission in the mouse central amygdala.
Authors: Bajo Et al.
Am J Physiol Gastrointest Liver Physiol 2015;6:49
-
Distinct regulation of DA D2S and D2L autoreceptor signaling by calcium.
Authors: Gantz Et al.
PLoS One 2015;4
-
Prototypic and arkypallidal neurons in the DA-intact external globus pallidus.
Authors: Abdi Et al.
Elife 2015;35:6667
-
Absence of plateau potentials in dLGN cells leads to a breakdown in retinogeniculate refinement.
Authors: Dilger Et al.
J Neurosci 2015;35:3652
-
Sex Differences in Molecular Signaling at Inhibitory Synapses in the Hippocampus.
Authors: Tabatadze Et al.
J Neurosci 2015;35:11252
-
Neurotensin Induces Presynaptic Depression of D2 DA Autoreceptor-Mediated Neurotransmission in Midbrain DArgic Neurons.
Authors: Piccart Et al.
J Neurosci 2015;35:11144
-
Asynchronous GABA Release Is a Key Determinant of Tonic Inhibition and Controls Neuronal Excitability: A Study in the Synapsin II-/- Mouse.
Authors: Medrihan Et al.
Cereb Cortex 2015;25:3356
-
Activity-dependent differences in function between proximal and distal Schaffer collaterals.
Authors: Owen and Grover
J Neurophysiol 2015;113:3646
-
Apamin Boosting of Synaptic Potentials in CaV2.3 R-Type Ca2+ Channel Null Mice.
Authors: Wang Et al.
J Neurophysiol 2015;10:e0139332
-
Embryonic GABA(B) receptor blockade alters cell migration, adult hypothalamic structure, and anxiety- and depression-like behaviors sex specifically in mice.
Authors: Stratton Et al.
PLoS One 2014;9:e106015
-
Inhibitory glycinergic neurotransmission in the mammalian auditory brainstem upon prolonged stimulation: short-term plasticity and synaptic reliability.
Authors: Kramer Et al.
Front Neural Circuits 2014;8:14
-
Phasic DA release drives rapid activation of striatal D2-receptors.
Authors: Marcott Et al.
Neuron 2014;84:164
-
Synaptic and cellular organization of layer 1 of the developing rat somatosensory cortex.
Authors: Muralidhar Et al.
Front Neuroanat 2014;7:52
-
Nociceptin/orphanin FQ decreases glutamate transmission and blocks ethanol-induced effects in the central amygdala of naive and ethanol-dependent rats.
Authors: Kallupi Et al.
Neuropsychopharmacology 2014;39:1081
-
Longitudinal testing of hippocampal plasticity reveals the onset and maintenance of endogenous human Aβ-induced synaptic dysfunction in individual freely behaving pre-plaque transgenic rats: rapid reversal by anti-Aβ agents.
Authors: Qi Et al.
Acta Neuropathol Commun 2014;2:175
-
GABAB receptors expressed in human aortic endothelial cells mediate intracellular calcium concentration regulation and endothelial nitric oxide synthase translocation.
Authors: Wang Et al.
J Cereb Blood Flow Metab 2014;2014:871735
-
Impairment of GABA transporter GAT-1 terminates cortical recurrent network activity via enhanced phasic inhibition.
Authors: Razik Et al.
Front Neural Circuits 2013;7:141
-
Dentate gyrus network dysfunctions precede the symptomatic phase in a genetic mouse model of seizures.
Authors: Toader Et al.
Nat Commun 2013;7:138
-
Conservation of 5-HT1A receptor-mediated autoinhibition of serotonin (5-HT) neurons in mice with altered 5-HT homeostasis.
Authors: Araragi Et al.
Front Pharmacol 2013;4:97
-
Synapsin II desynchronizes neurotransmitter release at inhibitory synapses by interacting with presynaptic calcium channels.
Authors: Medrihan Et al.
Proc Natl Acad Sci U S A 2013;4:1512
-
Ghrelin increases GABAergic transmission and interacts with ethanol actions in the rat central nucleus of the amygdala.
Authors: Cruz Et al.
Neuropsychopharmacology 2013;38:364
-
Galanin-induced decreases in nucleus accumbens/striatum excitatory postsynaptic potentials and mor. conditioned place preference require both galanin receptor 1 and galanin receptor 2.
Authors: Einstein Et al.
Eur J Neurosci 2013;37:1541
-
Ovarian hormone loss impairs excitatory synaptic transmission at hippocampal CA3-CA1 synapses.
Authors: Wu Et al.
J Neurosci 2013;33:16158
-
TRPM2 channels are required for NMDA-induced burst firing and contribute to H(2)O(2)-dependent modulation in substantia nigra pars reticulata GABAergic neurons.
Authors: Lee Et al.
J Neurosci 2013;33:1157
-
GABA promotes the competitive selection of dendritic spines by controlling local Ca2+ signaling.
Authors: Hayama Et al.
Nat Neurosci 2013;16:1409
-
Optogenetic stimulation of the corticothalamic pathway affects relay cells and GABAergic neurons differently in the mouse visual thalamus.
Authors: Jurgens Et al.
PLoS One 2012;7:e45717
-
Increased Kv1 channel expression may contribute to decreased sIPSC frequency following chronic inhibition of NR2B-containing NMDAR.
Authors: He Et al.
Neuropsychopharmacology 2012;37:1338
-
Calcium-dependent but action potential-independent BCM-like metaplasticity in the hippocampus.
Authors: Hulme Et al.
J Neurosci 2012;32:6785
-
Adenosine release during seizures attenuates GABAA receptor-mediated depolarization.
Authors: Ilie Et al.
J Neurosci 2012;32:5321
-
Repeated stress dysregulates κ-opioid receptor signaling in the dorsal raphe through a p38α MAPK-dependent mechanism.
Authors: Lemos Et al.
J Neurosci 2012;32:12325
-
Multiple inhibitory G-protein-coupled receptors resist acute desensitization in the presynaptic but not postsynaptic compartments of neurons.
Authors: Pennock Et al.
J Neurosci 2012;32:10192
-
Persistent inflammation increases GABA-induced depolarization of rat cutaneous dorsal root ganglion neurons in vitro.
Authors: Zhu Et al.
Neurobiol Dis 2012;220:330
-
Astrocytes mediate in vivo cholinergic-induced synaptic plasticity.
Authors: Navarrete Et al.
PLoS Biol 2012;10:e1001259
-
Intermediate conductance calcium-activated potassium channels modulate summation of parallel fiber input in cerebellar Purkinje cells.
Authors: Engbers Et al.
J Neurosci 2012;109:2601
-
Inflammation-induced shift in spinal GABA(A) signaling is associated with a tyrosine kinase-dependent increase in GABA(A) current density in nociceptive afferents.
Authors: Zhu Et al.
J Neurophysiol 2012;108:2581
-
Diffuse and specific tectopulvinar terminals in the tree shrew: synapses, synapsins, and synaptic potentials.
Authors: Wei Et al.
PLoS One 2011;6:e23781
-
Aberrant GABA(A) receptor-mediated inhibition in cortico-thalamic networks of succinic semialdehyde dehydrogenase deficient mice.
Authors: Errington Et al.
PLoS One 2011;6:e19021
-
Capsaicin-induced changes in LTP in the lateral amygdala are mediated by TRPV1.
Authors: Zschenderlein Et al.
PLoS One 2011;6:e16116
-
Requirements for synaptically evoked plateau potentials in relay cells of the dorsal lateral geniculate nucleus of the mouse.
Authors: Dilger Et al.
J Physiol 2011;589:919
-
Ovarian hormone deficiency reduces intrinsic excitability and abolishes acute estrogen sensitivity in hippocampal CA1 pyramidal neurons.
Authors: Wu Et al.
J Neurosci 2011;31:2638
-
SK2 channels are neuroprotective for ischemia-induced neuronal cell death.
Authors: Allen Et al.
Neuroscience 2011;31:2302
-
Altered neocortical rhythmic activity states in Fmr1 KO mice are due to enhanced mGluR5 signaling and involve changes in excitatory circuitry.
Authors: Hays Et al.
J Neurosci 2011;31:14223
-
Distinct functions of kainate receptors in the brain are determined by the auxiliary subunit Neto1.
Authors: Straub Et al.
Nat Neurosci 2011;14:866
-
The SK2-long isoform directs synaptic localization and function of SK2-containing channels.
Authors: Allen Et al.
Nat Neurosci 2011;14:744
-
Suppression of PKR promotes network excitability and enhanced cognition by IF.-γ-mediated disinhibition.
Authors: Zhu Et al.
Cell 2011;147:1384
-
Facilitation of long-term potentiation by muscarinic M(1) receptors is mediated by inhibition of SK channels.
Authors: Buchanan Et al.
Neuron 2010;68:948
-
Cannabinoid CB1 receptor facilitation of substance P release in the rat spinal cord, measured as neurokinin 1 receptor internalization.
Authors: Zhang Et al.
Eur J Neurosci 2010;31:225
-
M3 muscarinic acetylcholine receptor expression confers differential cholinergic modulation to neurochemically distinct hippocampal basket cell subtypes.
Authors: Rio Et al.
Front Pharmacol 2010;30:6011
-
Control of cannabinoid CB1 receptor function on glutamate axon terminals by endogenous adenosine acting at A1 receptors.
Authors: Hoffman Et al.
J Neurosci 2010;30:545
-
A dynamic role for GABA receptors on the firing pattern of midbrain DArgic neurons.
Authors: Lobb Et al.
J Neurophysiol 2010;104:403
-
NMDA receptor-mediated long-term alterations in epileptiform activity in experimental chronic epilepsy.
Authors: Hellier Et al.
Neuropharmacology 2009;56:414
-
ACET is a highly potent and specific kainate receptor antagonist: characterisation and effects on hippocampal mossy fibre function.
Authors: Dargan Et al.
Neuropharmacology 2009;56:121
-
Dysfunction of the dentate basket cell circuit in a rat model of temporal lobe epilepsy.
Authors: Zhang and Buckmaster
Neuropharmacology 2009;29:7846
-
Slow glycinergic transmission mediated by transmitter pooling.
Authors: Balakrishnan Et al.
Nat Neurosci 2009;12:286
-
Co-transmission of DA and GABA in periglomerular cells.
Authors: Maher and Westbrook
J Neurosci 2008;99:1559
-
Effects of striatal GABA A-receptor blockade on striatal and cortical activity in monkeys.
Authors: Darbin and Wichmann
J Neurophysiol 2008;99:1294
-
Neuropeptide S-mediated control of fear expression and extinction: role of intercalated GABAergic neurons in the amygdala.
Authors: Jüngling Et al.
Neuron 2008;59:298
-
Autonomous initiation and propagation of action potentials in neurons of the subthalamic nucleus.
Authors: Atherton Et al.
J Physiol 2008;586:5679
-
Input-specific plasticity at excitatory synapses mediated by endocannabinoids in the dentate gyrus.
Authors: Chiu and Castillo
Neuropharmacology 2008;54:68
-
Cholecystokinin inhibits endocannabinoid-sensitive hippocampal IPSPs and stimulates others.
Authors: Karson Et al.
Biomed Res Int 2008;54:117
-
Alpha1-adrenergic receptor-induced heterosynaptic long-term depression in the bed nucleus of the stria terminalis is disrupted in mouse models of affective disorders.
Authors: McElligott
Neuropsychopharmacology 2008;33:2313
-
Dichotomous DArgic control of striatal synaptic plasticity.
Authors: Shen Et al.
Science 2008;321:848
-
Competition between calcium-activated K+ channels determines cholinergic action on firing properties of basolateral amygdala projection neurons.
Authors: Power and Sah
J Neurosci 2008;28:3209
-
Ionic factors governing rebound burst phenotype in rat deep cerebellar neurons.
Authors: Molineux Et al.
J Neurosci 2008;100:2684
-
Coupling of L-type Ca2+ channels to KV7/KCNQ channels creates a novel, activity-dependent, homeostatic intrinsic plasticity.
Authors: Wu Et al.
J Neurophysiol 2008;100:1897
-
Brain injury impairs dentate gyrus inhibitory efficacy.
Authors: Bonislawski Et al.
J Neurophysiol 2007;25:163
-
Potent and specific action of the mGlu1 antagonists YM-298198 and JNJ16259685 on synaptic transmission in rat cerebellar slices.
Authors: Fukunaga Et al.
Br J Pharmacol 2007;151:870
-
Glial glutamate transporters maintain one-to-one relationship at the climbing fiber-Purkinje cell synapse by preventing glutamate spillover.
Authors: Takayasu Et al.
Mol Pain 2006;26:6563
-
GAT-3 transporters regulate inhibition in the neocortex.
Authors: Kinney
Br J Pharmacol 2005;94:4533
-
A parametric assessment of GABA antagonist effects on paired-pulse facilitation in the rat anterior cingulate cortex.
Authors: Sylantyev Et al.
Neurosci Res 2005;52:362
-
Endocannabinoids control the induction of cerebellar LTD.
Authors: Safo and Regehr
Neuron 2005;48:647
-
The wake-promoting peptide orexin-B inhibits glutamatergic transmission to dorsal raphe nucleus serotonin neurons through retrograde endocannabinoid signaling.
Authors: Haj-Dahmane
J Neurosci 2005;25:896
-
PropF. suppresses synaptic responsiveness of somatosensory relay neurons to excitatory input by potentiating GABA(A) receptor chloride channels.
Authors: Ying and Goldstein
Cereb Cortex 2005;1:2
-
Astrocyte glutamate transporters regulate metabotropic glutamate receptor-mediated excitation of hippocampal interneurons.
Authors: Huang Et al.
J Neurosci 2004;24:4551
-
The human GABA(B1b) and GABA(B2) heterodimeric recombinant receptor shows low sensitivity to phaclofen and saclofen.
Authors: Wood Et al.
J Neurosci 2000;131:1050
FAQs
No product specific FAQs exist for this product, however you may
View all Small Molecule FAQsReviews for CGP 55845 hydrochloride
There are currently no reviews for this product. Be the first to review CGP 55845 hydrochloride and earn rewards!
Have you used CGP 55845 hydrochloride?
Submit a review and receive an Amazon gift card.
$25/€18/£15/$25CAN/¥75 Yuan/¥2500 Yen for a review with an image
$10/€7/£6/$10 CAD/¥70 Yuan/¥1110 Yen for a review without an image