DSP-1053 is a novel potent serotonin reuptake (SERT) inhibitor with 5-HT1A partial agonistic activity that binds to human serotonin transporter and 5-HT1A receptor with Ki of 1.02 and 5.05 nM, respectively; inhibits serotonin transporter with IC50 of 2.74 nM and shows an intrinsic activity for 5-HT1A receptors of 70.0%; dose-dependently increases extracellular 5-HT levels in rat microdialysis at 3-10 mg/kg, demonstrates antidepressant-like effect in vivo. Depression Phase 1 Discontinued
TMPPAA is an allosteric agonist and positive allosteric modulator of the 5-HT3 receptor. TMPPAA enhances 5-HT-mediated 5-HT3AR signaling[1].
Acephate-d3 is the deuterium labeled Acephate. Acephate is an anticholinesterase insecticide that produces cholinotoxicity. Acephate displays weak inhibition of rat AChE but potently inhibits cockroach AChE.
AMPA Receptor Modulator is a potent, oral active and selective AMPAR regulatory protein TARP γ-8 negative modulator with a pIC50 of 9.7, more selective over GluA1/γ-2 (pIC50=5)[1].
FK888 is a potent, selective, and high affinity dipeptide NK1 receptor antagonist. FK888 displaces [3H]-SP binding with a Ki value of 0.69 nM and 0.45 microM. FK888 also inhibits SP-induced airway oedema in guinea-pig after both intravenous and oral administration[1].
Sumatriptan succinate (GR 43175) is a serotonin1 (5-HT1) receptor agonist, which is effective in the acute treatment of migraine headache.Target: 5-HT 1d receptor agonistSumatriptan succinate is a serotonin1 (5-HT1) receptor agonist, which is effective in the acute treatment of migraine headache. Its antimigraine activity is believed to derive from selective vasoconstriction of cranial blood vessels which are dilated and distended during migraine headache and/or from inhibition of neurogenically mediated inflammation in the dura mater [1].For sumatriptan succinate 50 mg versus placebo the NNTs were 6.1, 7.5, and 4.0 for pain-free at two hours and headache relief at one and two hours, respectively. NNTs for sustained pain-free and sustained headache relief during the 24 hours postdose were 9.5 and 6.0, respectively [2]. Difference in time-weighted (0-2.5 h) mean arterial pressure MAP (90% confidence interval) was 1.2 mmHg (-0.2, 2.7) between telcagepant and placebo, 4.0 mmHg (2.5, 5.5) between sumatriptan succinate and placebo, and 1.5 mmHg (0.0, 3.0) between telcagepant with sumatriptan succinate vs sumatriptan succinate alone. When coadministered with telcagepant, the AUC0-6h and C(max) of sumatriptan succinate were increased by 23% and 24%, respectively. The small MAP increases observed after coadministration could possibly be associated with the slight elevations in sumatriptan succinate levels [3].Clinical indications: Cluster headache; MigraineToxicity: Symptoms of overdose include convulsions, tremor, paralysis, inactivity, ptosis, erythema of the extremities, abnormal respiration, cyanosis, ataxia, mydriasis, salivation, and lacrimation
Arborine, isolated from Glycosmis arborea, inhibits the peripheral action of acetylcholine and induces a fall in blood pressure[1][1].
A potent and selective α4β2 nAChR agonist with Ki of 16 nM; display selectivity over α7 nAChR (Ki>10 uM) and α1β1 nAChR; displays a similar potency and efficacy to (-)-nicotine to facilitate ACh release (EC50=3 uM), with less potent and less efficacious stimulate dopamine release (ABT-089, EC50=1.1 uM; (-)-nicotine, EC50=0.04 uM); shows effects on cognitive performance in rats and monkeys. Alzheimer Disease Phase 2 Discontinued
Tropisetron(SDZ-ICS 930) is a selective 5-HT3 receptor antagonist and α7-nicotinic receptor agonist with an IC50 of 70.1 ± 0.9 nM for 5-HT3 receptor. IC50 value: 70.1 ± 0.9 nM [1]Target: 5-HT3 receptorin vitro: Tropisetron specifically inhibited both IL-2 gene transcription and IL-2 synthesis in stimulated T cells. tropisetron inhibited both the binding to DNA and the transcriptional activity of NFAT and AP-1. We also observed that tropisetron is a potent inhibitor of PMA plus ionomycin-induced NF-(kappa)B activation but in contrast TNF(alpha)-mediated NF-(kappa)B activation was not affected by this antagonist [2]. Tropisetron prevents the phosphorylation and thus activation of the p38 MAPK, which is involved in post-transcriptional regulation of various cytokines [3].in vivo: Two different doses of tropisetron (5 and 10 mg/kg) or vehicle were administered intraperitoneally 30 min before pMCAO. Neurological deficit scores, mortality rate and infarct volume were determined 24 h after permanent focal cerebral ischemia [4].
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]
Pilocarpine nitrate is a selective M3-type muscarinic acetylcholine receptor (M3 muscarinic receptor) agonist.
Piribedil hydrochloride is a potent and orally active dopamine D2 and dopamine D3 agonist. Piribedil hydrochloride is also a α2-adrenoceptors antagonist. Piribedil hydrochloride can inhibit MLL1 methyltransferase activity (EC50: 0.18 μM). Piribedil hydrochloride has the potential for the research of parkinson's disease, circulatory disorders, cancers[1][2][3][4].
Methapyrilene is a histamine antagonist, a pyridine chemical with anticholinergic activity. Methapyrilene can cause target organ-specific epigenetic alterations, such as a decrease in DNA methylation levels. Methapyrilene induces hepatocellular carcinoma in rats[1][2].
Trap-101 hydrochloride is a potent, selective and competitive antagonist of NOP receptors over classical opioid receptors. Trap-101 stimulates GTPγ35S binding to CHOhNOP membranes with pKi values of 8.65, 6.60, 6.14 and <5 for NOP, μ-, κ-, and δ-opioid receptors, respectively. Trap-101 attenuates motor deficits in a rat model of parkinson's disease and can be used for the research of nervous system diseases[1].
MAO-B-IN-8 is a potent reversible MAO-B inhibitor and an inhibitor of microglial production of neuroinflammatory mediator. MAO-B-IN-8 can be used for neurodegenerative disease research[1].
Bulbocapnine hydrochloride, an aporphine alkaloid, is a dopamine receptor inhibitor. Bulbocapnine hydrochloride inhibits dopamine synthesis. Bulbocapnine hydrochloride also has neuroleptic-like, anticonvulsant and antinociceptive effects[1][2][3].
BF-168, a candidate probe for PET, is found to specifically recognize both neuritic and diffuse plaques, with a Ki of 6.4 nM for Aβ1-42.
Conantokin G, a 17-amino-acid peptide, is a potent, selective and competitive antagonist of N-methyl-D-aspartate (NMDA) receptors. Conantokin G inhibits NMDA-evoked currents in murine cortical neurons with an IC50 of 480 nM. Conantokin G has neuroprotective properties[1][2].
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].
Paroxetine hydrochloride is a potent selective serotonin-reuptake inhibitor, commonly prescribed as an antidepressant and has GRK2 inhibitory ability with IC50 of 14 μM.
Acotiamide monohydrochloride trihydrate is an orally active and first-in-class gastroprokinetic agent for the treatment of functional dyspepsia. Acotiamide monohydrochloride trihydrate enhances acetylcholine released by enteric neurons through muscarinic receptor antagonism and acetylcholinesterase (AChE) inhibition, thereby enhancing gastric emptying and gastric accommodation[1][2].
Geissoschizine methyl ether, a major indole alkaloid found in Uncaria hook, is a major active component of Yokukansan with psychotropic effects. Geissoschizine methyl ether is potent 5-HT1A receptor agonist[1][2].
Perlapine is a potent muscarinic DREADD (Designer Receptors Exclusively Activated by Designer Drugs) agonist Perlapine exhibits >10000-fold selectivity for hM3Dq over hM3 receptors[1].
Benzetimide hydrochloride is a muscarinic acetylcholine receptor antagonist. Target: mAChR
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].
Biperiden (KL 373) lactate is an orally active non-selective muscarinic receptor antagonist that competitively binds to M1 muscarinic receptors. Biperiden (KL 373) lactate inhibits acetylcholine and enhances dopamine signaling in the central nervous system. Biperiden (KL 373) lactate has the potential for the research of Parkinson's disease and other related psychiatric disorders[1][2].
Fesoterodine L-mandelate is an orally active, nonsubtype selective, competitive muscarinic receptor (mAChR) antagonist with pKi values of 8.0, 7.7, 7.4, 7.3, 7.5 for M1, M2, M3, M4, M5 receptors, respectively. Fesoterodine L-mandelate is used for the overactive bladder (OAB)[1][2].
NMDA receptor antagonist 2 is a potent and orally active NR2B subtype-selective NMDA antagonist with an IC50 and a Ki of 1.0 nM and 0.88 nM, respectively. NMDA receptor antagonist 2 is used for the study of neuropathic pain and Parkinson’s disease[1].
Pimavanserin tartrate (ACP-103) is a potent 5-HT 2A receptor inverse agonist with pIC50 and pKi of 8.73 and 9.3, respectively.
NS1219 ((R)-SPD502) is the isomer of NS 1209 HY-15074. NS1209 is a selective AMPA receptor antagonist with neuroprotective activity. NS1209 can be used for the research of stroke, neuropathic pain and epilepsy[1].