PNU-282987 is a selective α7 nicotinic acetylcholine receptor(α7 nAChR) agonist with Ki of 26 nM; no affinity for α1β1γδ and α3β4 nAChRs (IC50 ≥ 60 μM).IC50 value: 26 nM(Ki) [1]Target: α7 nAChR agonistin vitro: Treatment with PNU-282987 resulted in an attenuation of neuroinflammation in the MPTP-lesioned SN. Furthermore, PNU-282987 attenuated MPTP-induced dopaminergic cell loss in the SN and reduced striatal dopamine depletion [3].in vivo: Mice were subjected to 70% partial hepatic I/R for 60 min and pretreated with either vehicle or with PNU-282987, and blood and hepatic tissue samples were collected at 3, 6, and 12 h following reperfusion. pretreatment with PNU-282987 decreased serum transaminase levels and ameliorated liver injury after hepatic I/R. Moreover, pretreatment with PNU-282987 suppressed NF-κB activation, cytokine production (tumor necrosis factor α, interleukin 1β), and HMGB1 expression in liver after hepatic I/R [2]. Mice treated with 2.5 and 10 mg/kg of PNU devoted less time to rearing into open arms. In the HB task, MC mice displayed higher exploratory activity reflected in more head-dips (HD) during the first minute than EE and SE, whereas EE displayed low exploration levels reflected in total HD (5 min) [4].
α-Conotoxin GIC is a potent and selective α3β2 nicotinic antagonist with an IC50 of 1.1 nM[1].
α-Conotoxin BuIA is a paralytic peptide neurotoxin and a competitive nAChR antagonist, with IC50s of 0.258 nM (α6/α3β2), 1.54 nM (α6/α3β4), 5.72 nM (α3β2), respectively. α-Conotoxin BuIA can be used to distinguish nAChRs containing β2- and β4-subunit, respectively. α-Conotoxin BuIA distinguishes among αxβ2 nAChRs with a rank order potency of α6>α3>α2>α4[1].
Sofiniclin (ABT 894) is an agonist of nicotinic acetylcholine receptor (nAChR), used as a potential non-stimulant treatment for attention-deficit/hyperactivity disorder (ADHD).
(-)-Sparteine (sulfate) is a quinolizidine alkaloid that can be extracted from Lupinus. (-)-Sparteine (sulfate) inhibits the release of acetylcholine and has anticonvulsant effects[1].
α-Conotoxin GI has high affinity for nAChR.α-Conotoxin GI is a short peptide toxin that can be isolated from the venom of Conus geographus.α-Conotoxin GI has the similar activity with neuromuscular blocking agent[1][2][3].
Methyllycaconitine citrate is a specific antagonist of α7 neuronal nicotinic acetylcholine receptor (α7nAChR).
(S)-UFR2709 is a competitive nAChR antagonist and displays higher affinity for α4β2 nAChRs than for α7 nAChRs. (S)-UFR2709 decreases anxiety and reduces ethanol consumption and ethanol preference in alcohol-preferring rats. (S)-UFR2709 acts as an anxiolytic agent and can be used for the study of nicotine addiction[1][2].
(+)-Anabasine hydrochloride is an alkaloid found in Nicotiana, and it is a potent nAChR agonist. (+)-Anabasine hydrochloride induces depolarization of TE671 cells endogenously expressing human fetal muscle-type nAChRs with an EC50 of 0.7 µM[1][2].
TC-1698 is a selective α7 nicotinic acetylcholine receptors agonist with EC50 value of 0.16 μM and 0.46 μM for monkey α7 nicotinic receptor and human α7 nicotinic receptor, respectively. TC-1698 improves memory and has neuroprotective effects. TC-1698 can be used for Alzheimer's disease research[1].
Hexamethonium is a non-depolarising ganglionic blocker, a nicotinic nACh (NN) receptor antagonist.Target: nAChRHexamethonium is a non-depolarising ganglionic blocker, a nicotinic nACh receptor antagonist that acts in autonomic ganglia by binding mostly in or on the NN receptor, and not the acetylcholine binding site itself. It does not have any effect on the muscarinic acetylcholine receptors (mAChR) located on target organs of the parasympathetic nervous system but acts as antagonist at the nicotinic acetylcholine receptors located in sympathetic and parasympathetic ganglia (NN). Hexamethonium bromide is a nicotinic acetyl choline receptor antagonist. Induces apoptosis and inhibits the stimulatory effect of nicotine on endothelial cell DNA synthesis and proliferation. Hexamethonium bromide hydrate is an inhibitor of AChR α3 [1-3].
Mecamylamine hydrochloride is an orally active, nonselective, noncompetitive nAChR antagonist that can treat various neuropsychiatric disorders. Mecamylamine hydrochloride is originally used as a ganglionic blocker in treating hypertension. Mecamylamine hydrochloride can easily crosses the blood-brain barrier[1][2].
α-Conotoxin PIA is a nicotinic acetylcholine receptor (nAChR) antagonist isolated from Conus purpurascens that targets nAChR subtypes containing α6 and α3 subunits. α-Conotoxin PIA has the potential for the research of Parkinson’s disease, and schizophrenia[1]。
ABT-418 hydrochloride is a potent and selective agonist of nAChRs with cognitive enhancing and anxiolytic activities. ABT-418 hydrochloride activates cholinergic channel and can be used for research of Alzheimer's disease[1][2].
Flupyradifurone is a systemic nAChR agonist that interferes with signal transduction in the central nervous system of sucking pests. Flupyradifurone can be used as a butenolide insecticide[1].
Cisatracurium Besylate is a nondepolarizing neuromuscular blocking agent, antagonizing the action of acetylcholine by inhibiting neuromuscular transmission.Target: AChR alpha-2Cisatracurium is a neuromuscular-blocking drug or skeletal muscle relaxant in the category of non-depolarizing neuromuscular-blocking drugs, used adjunctively in anesthesia to facilitate endotracheal intubation and to provide skeletal muscle relaxation during surgery or mechanical ventilation. It is a bisbenzyltetrahydroisoquinolinium agent with an intermediate duration of action. Cisatracurium is one of the ten isomers of the parent molecule, atracurium. Moreover, cisatracurium represents approximately 15% of the atracurium mixture [1, 2].
S-(+)-Mecamylamine (hydrochloride) is a neuronal nicotinic receptor modulator with antidepressant activity.
Zolunicant (MM-110) is a potent inhibitor against nicotinic α3β4 receptors with an IC50 of 0.90 μM to combat addiction. Zolunicant can decrease the self-administration of several addictive agents including morphine, cocaine, methamphetamine, nicotine, and ethanol in rat model. Zolunicant can be studied as a potential treatment for multiple forms of drug abuse[1]. Zolunicant also reveals a potent leishmanicide effect against Leishmania amazonensis[2].
TC-2559 fumarate is a potent and selective neuronal acetylcholine receptor agonist. TC-2559 fumarate is potent and efficacious in the activation of CNS receptors and reduces glutamate-induced neurotoxicity in vitro[1].
Dihydro-β-erythroidine (DHβE) hydrobromide is a potent, orally active, and competitive antagonist of neuronal nAChRs. Dihydro-β-erythroidine hydrobromide shows selectivity for α4β4 and α4β2 nAChRs, with IC50s of 0.19 and 0.37 μM, respectively. Antidepressant-like activities[1][2][3].
5-Iodo-A-85380 dihydrochloride is a selective ligand of nAChR. 5-Iodo-A-85380 dihydrochloride binds to α4β2 nAChRs in rat and human brain with Kds of 12 and 14 pM,respectively[1].
Lupanin (D-Lupanine) is a natural ketonic derivative of Sparteine ((+)-Sparteine (HY-W008350)) with a ganglioplegic activity. Lupanine shows binding affinity for nicotinic receptor (nAChR) with a Ki value of 500 nM[1].
tracurium (BW-33A free acid) is a potent, competitive and non-depolarizing neuromuscular blocking agent.Atracurium also is an AChR receptor antagonist. Atracurium induces bronchoconstriction and neuromuscular blockade. Atracurium promotes astroglial differentiation[1][2][3][4][5].
UB-165 is a nAChR agonist, being a full agonist of the α3β2 isoform and a partial agonist of the α4β2* isoform, with a Ki value of 0.27 nM for [3H]-nicotine binding in rat brain[1].
Dicloromezotiaz is a potent insecticide acting on nicotinic acetylcholine receptors (nAChRs). Dicloromezotiaz can be used to control a broad range of lepidoptera[1].
PNU-282987 S enantiomer free base is the S-enantiomer of PNU-282987 free base. PNU-282987 is an α7 nicotinic acetylcholine receptor (α7 nAChR) agonist.
PNU-120596 (NSC 216666 ) is a potent and selective positive allosteric α7 nAChR modulator with an EC50 of 0.2 μM.IC50 value: 0.2 uM (EC50) [1] Target: α7in vitro: PNU-120596 increases agonist (Ach)-evoked calcium flux mediated by an engineered variant of the human α7 nAChR. PNU-120596 increases agonists (choline and ACh)-evoked currents mediated by wild-type receptors and also demonstrates a pronounced prolongation of the evoked response in the continued presence of agonist in Xenopus oocytes. PNU-120596 increases the channel mean open time ofα7 nAChRs but has no effect on ion selectivity and relatively little, if any, effect on unitary conductance. When applied to acute hippocampal slices, PNU-120596 increases the frequency of ACh-evoked GABAergic postsynaptic currents measured in pyramidal neurons; this effect is suppressed by TTX, suggesting that PNU-120596 modulates the function of α7 nAChRs located on the somatodendritic membrane of hippocampal interneurons [1]. Besides the positive modulation to α7 nAChR, PNU-120596 induces a profound retardation of the kinetics of desensitization, raising the potential of Ca2+-induced toxicity through excessive stimulation of α7 nAChR [2]. PNU-120596 causes changes in cysteine accessibility at the inner beta sheet, transition zone and agonist binding site while binding to α7 nAChR. Binding sites for PNU-120596 are not in the agonist-binding sites and PNU-120596 enhances agonist-evoked gating of nicotinic receptors by eliciting conformational effects that are similar but nonidentical to the gating conformations promoted by Ach [3].in vivo: Systemic administration of PNU-120596 (1 mg/kg) to rats improves the auditory gating deficit caused by amphetamine, a model proposed to reflect a circuit level disturbance associated with schizophrenia. [1] When administered prior to Carrageenan, 30 mg/kg PNU-1230596 significantly blunts mechanical hyperalgesia and weight bearing deficits for up to 4 hours. PNU-120596 attenuates the carrageenan-induced increase in levels of TNF-α and IL-6 within the hindpaw oedema, diclofenac only attenuated IL-6 levels. Established mechanical hyperalgesia induced by Carrageenan or CFA is also partially reversed by PNU-120596 [4].
nAChR agonist CMPI hydrochloride is a potent and selective positive allosteric modulator (PAM) of nAChR containing a α4:α4 subunit interface. nAChR agonist CMPI hydrochloride enhances the response of (α4)3(β2)2 nAChR to ACh (10 µM) with an EC50 of 0.26 µM. nAChR agonist CMPI hydrochloride has potential for the research of nicotine dependence and many neuropsychiatric conditions associated with decreased brain cholinergic activity[1][2].
Aniracetam(Ro 13-5057) is a nootropics and neuroprotective drug, which is selectively modulates the AMPA receptor and nAChR.Target: AMPA; nAChRAniracetam is an ampakine and nootropic of the racetam chemical class purported to be considerably more potent than piracetam. It selectively modulates the AMPA receptor. It is lipid soluble and has possible cognition enhancing effects. It has been tested in animals extensively, Alzheimer's patients and temporarily-impaired healthy subjects. It has shown potential as an anxiolytic in three clinical animal models [1].Administration of aniracetam for 10 days (post-natal days (PND) 18-27), at a dose of 50 mg/kg reversed cognitive deficits in both rat genders, indicated by a significant increase in the number of avoidances and the number of 'good learners'. After the termination of the nootropic treatment, a significant increase in both amplitude and frequency of AMPA receptor-mediated mEPSCs in hippocampal CA-1 pyramidal cells was observed [2].Clinical indications: Cognitive disorder; StrokeFDA Approved Date: Toxicity: insomnia; headaches; nausea or rash.
PHA 568487 free base is a selective alpha 7 nicotinic acetylcholine receptor (α-7 nAchR) agonist. PHA 568487 free base reduces neuroinflammation[1][2][3].