Alpha-Asarone is one of the main psychoactive compounds, and possesses an antidepressant-like activity in mice.IC50 value:Target:In vitro: The results indicated that α-asarone significantly attenuated the LPS-stimulated increase in neuroinflammatory responses and suppressed pro-inflammatory cytokine production in BV-2 cells. Mechanistic study revealed that α-asarone?inhibited the LPS-stimulated activation via regulation of nuclear factor kappa-B by blocking degradation of inhibitor kappa B-alpha signaling in BV-2 microglial cells. [2]In vivo: The present results reveal that the acute treatment of α-asarone elicited biphasic responses on immobility such that the duration of the immobility time is significantly reduced at lower doses (15 and 20 mg/kg, i.p.) but increased at higher doses (50 and 100 mg/kg, i.p.) in the TST. Besides, α-asarone at higher doses (50 and 100 mg/kg, i.p.) significantly decreased the spontaneous locomotor activity.[1]
Homocarnosine is a dipeptide of γ-aminobutyric acid (GABA) and histidine unique to brain. Homocarnosine is an inhibitory neuromodulator synthesized in the neuron from GABA and exhibiting anticonvulsant effects[1].Homocarnosine has antioxidant and anti-inflammatory actions, prevention of DNA damage, and inhibition of advanced glycation end-product formation[2].
Humulone (α-Lupulic acid), a prenylated phloroglucinol derivative, is a potent cyclooxygenase-2 (COX-2) inhibitor. Humulone acts as a positive modulator of GABAA receptor at low micromolar concentrations. Humulone is an inhibitor of bone resorption. Humulone possesses antioxidant, anti-angiogenic and apoptosis-inducing properties[1][2][3].
Gidazepam is an agonist of GABA receptor channels (GABA RCs).
Valnoctamide-d5 (Valmethamide-d5) is the deuterium labeled Valnoctamide. Valnoctamide (Valmethamide), a derivative of valproate, suppresses benzodiazepine-refractory status epilepticus. Valnoctamide (Valmethamide) acts directly on GABAA receptors[1][2].
Phaclofen is a selective GABAB receptor antagonist. Phaclofen is a peripheral and central baclofen antagonist. Phaclofen maybe a potential compound in determining the physiological significance of central and peripheral bicuculline-insensitive receptors with which GABA and (-)-baclofen interact[1][2].
DL-Gabaculine hydrochloride is a neurotoxin that irreversibly inhibits bacterial pyridoxal phosphate linked γ-aminobutyric acid-α-ketoglutaric acid transaminase with a Ki of 2.86 μM[1].
CL 218872 is a selective and orally active benzodiazepine of α1 subunit-containing GABAAreceptor with a Ki of 130 nM. CL 218872 exerts anxiolytic and anticonvulsant in vivo[1].
(-)-Securinine is plant-derived alkaloid and also a GABAA receptor antagonist.
NCS-382 is a potent GABA receptor antagonist and also a GHBR receptor antagonist. NCS-382 has anticonvulsant and antisedative activity. NCS-382 is used in the related research of hereditary nervous system diseases[1][4].
6,2'-Dihydroxyflavone is a novel antagonist of GABAA receptor.
SKF89976A hydrochloride is a selective GABA transporter (GAT-1) inhibitor with IC50s of 0.28 μM, 137.34 μM and 202.8 μM for GAT-1, GAT-2 and GAT-3 in CHO cells, respectively.
Etomidate Hcl(R16659 Hcl) is a GABAA receptors agonist, which is a short acting intravenous anaesthetic agent used for the induction of general anaesthesia.Target: GABA ReceptorEtomidate is a potent inhibitor of the adrenal response to surgery. The absence of clinical consequences associated with the blunted response suggests that a major increase in adrenal hormone production may not be necessary during surgery [1]. Etomidate is an intravenous induction agent that is associated with hemodynamic stability during intubation. The agent is therefore attractive for use in critically ill patients who have a high risk of hemodynamic instability during this procedure [2]. Etomidate use was not associated with all cause 28-day mortality or hospital mortality but was associated with significantly higher ICU mortality (91% vs. 64% for etomidate and controls groups, respectively; p = 0.02). Etomidate patients who received subsequent doses of hydrocortisone required lower doses of vasopressors and had more vasopressor-free days but no improvement in mortality [3].Clinical indications: FDA Approved Date: 1983Toxicity: Undesirable side effects of etomidate that may limit its use include pain on injection, myoclonus and adrenocortical suppression lasting 4-6 hours following an induction dose.
SCH 50911, (+)-(S)-5,5-dimethylmorpholinyl-2-acetic acid, a selective, orally-active and competitive γ-Aminobutyric acid B GABA(B) receptor antagonist, binds to GABA(B) receptor with IC50 of 1.1 μM. SCH 50911 antagonizes GABA(B) autoreceptors, increasing the electrically-stimulated 3H overflow with an IC50 of 3 μM[1].
CGP 54626 (hydrochloride) is a selective antagonist of GABAB receptor with an IC50 value of 4 nM. CGP 54626 (hydrochloride) can be used to investigate the role of GABAB receptors in neurological signaling[1].
DL-Borneol is a racemic mixture of D-Borneol and L-Borneol. DL-Borneol is widely used for the treatment of cardiovascular and cerebrovascular diseases in China.
Arecaidine, a pyridine alkaloid, is a potent GABA uptake inhibitor. Arecaidine is a substrate of H+-coupled amino acid transporter 1 (PAT1, SLC36A1) and competitively inhibits L-proline uptake[1][2].
Picrotoxin is a noncompetitive antagonist of GABAA receptor.
Acamprosate D3 calcium is the deuterium labeled Acamprosate calcium. Acamprosate calcium is a GABA receptor agonist and modulator of glutamatergic systems[1][2].
Gabazine is a selective and competitive antagonist of GABAA receptor, with an IC50 of ~0.2 μM for GABA receptor.
Basmisanil is a highly selective GABAAα5 negative allosteric modulator.
Panadiplon (FG 10571; PNU 78875), a benzodiazepine receptor, is a 5GABAA partial agonist. Panadiplon exhibits selectivity for 5GABAA receptors versus 1GABAA receptors[1].
Phenylpiracetam(Phenotropyl; Phenotropil) is a phenylated derivative of the nootropic drug piracetam. It is used as a stimulant nootropic drug that can be up to 30-60 times more potent than piracetam.IC50 Value:Target: AMPA receptor allosteric modulatorin vitro: N/Ain vivo: In the open-field test, a significant increase in locomotor activity was observed after a single administration of R-phenotropil at doses of 10 and 50 mg/kg and S-phenotropil at a dose of 50 mg/kg. In the forced swim test, R-phenotropil induced an antidepressant effect at doses of 100 and 50 mg/kg, and S-phenotropil was active at a dose of 100 mg/kg. R-phenotropil significantly enhanced memory function in a passive avoidance response test at a dose of 1 mg/kg; the S-enantiomer did not show any activity in this test [1].
Dihydroergotoxine mesylate is a complex of closely related alkaloid salts; Binds with high affinity to the GABAA receptor Cl- channel, producing an allosteric interaction with the benzodiazepine site.IC50 value:Target: Dihydroergotoxine mesylate also interacts with central dopaminergic, serotonergic and adrenergic (α1) receptors. Dihydroergotoxine mesylate displays antiproliferative activity in vitro (IC50 = 18 - 38 μM in prostate cancer cells) and exhibits cognition-enhancing, anticonvulsant and sedative activity in vivo.
CP-409092 hydrochloride is a partial agonist of GABAA receptor, with anti-anxiety activity[1].
Xilmenolone is a GABAA receptor positive allosteric modulator[1].
Baclofen is a gamma-amino-butyric acid (GABA) derivative used as a skeletal muscle relaxant.Target: GABA ReceptorBaclofen, a lipophilic analog of gamma-aminobutyric acid, is clinically used to control spasticity. Baclofen pretreatment (3 mg/kg) not only prolonged the time taken for animals to reach a core body temperature of 40 degrees C (P < 0.001), but also reduced the percentage of rats attaining a core body temperature of 40 degrees C [1]. Baclofen overdose may result in coma, apnea, autonomic disturbances, cardiac conduction abnormalities, and seizures. Levels obtained shortly after overdose correlate with length of mechanical ventilation [2].
Flumazenil acid is a metabolite of Flumazenil[1]. Flumazenil is a GABAA receptor antagonist[2].
Propofol potently and directly activates GABAA receptor and inhibits glutamate receptor mediated excitatory synaptic transmission. Propofol has antinociceptive properties and is used for sedation and hypnotic[1].
GABAA receptor modulator-2 (Compound 20) is selective, orally active α5-GABAAR negative allosteric modulator (NAM) with a Ki of 4.1 nM. GABAA receptor modulator-2 shows high-metabolic stability and good CNS safety[1].