selective peripheral

Tolazoline (Benzalolin), a non-selective competitive α-adrenergic receptor antagonist, is used as a vasodilator to treat spasms of peripheral blood vessels. It has also been used successfully as an antidote to reverse the severe peripheral vasoconstriction as a result of overdose with certain 5-HT2A agonist drugs.

Isoprenaline hydrochloride (NCI-c55630) is a potent beta-adrenergic agonist with the peripheral vasodilator, bronchodilator, and cardiac stimulating properties.

Flunarizine dihydrochloride (R14950) is a selective calcium entry blocker with calmodulin binding properties and histamine H1 blocking activity. Flunarizine dihydrochloride (R14950) is effective in the prophylaxis of migraine, occlusive peripheral vascular disease, vertigo of central and peripheral origin, and as an adjuvant in the therapy of epilepsy.

Isradipine (PN 200-110) is a dihydropyridine calcium channel blocker with antihypertensive and vasodilator activities. Isradipine blocks calcium entry through calcium ion channels in coronary and peripheral vascular smooth muscle, dilating coronary arteries and peripheral arterioles. This action increases oxygen delivery by enhancing blood flow and decreases oxygen requirements by reducing total peripheral resistance.

Prazosin hydrochloride (Vasoflex) reduces peripheral resistance and relaxes vascular smooth muscles as a selective adrenergic alpha-1 antagonist by a mechanism not completely known. Prazosin hydrochloride is a synthetic piperazine derivative with hypotensive antiadrenergic properties, It is used in the treatment of heart failure, hypertension, pheochromocytoma, Raynaud's syndrome, prostatic hypertrophy, and urinary retention.

Lys-[Des-Arg9]Bradykinin acetate is an endogenous potent and highly selective bradykinin B1 receptor agonist (Ki values are 0.12 and > 30000 nM at human B1 and B2 receptors respectively). Hypotensive agent that reduces peripheral vascular resistance in vivo. 16-fold more potent than [Des-Arg9]-Bradykinin.

Deriglidole (SL 86-0715) is a peripheral adrenergic receptor antagonist that is a selective inhibitor of alpha2 receptors. Deriglidole inhibits colistin and Idazoxan but does not show activity against prazosin and rat cortical and human platelet α2-adrenergic receptors.

M40 acetate is a potent, non-selective galanin receptor antagonist (Ki values are 1.82 and 5.1 nM at GAL1 and GAL2 respectively) that inhibits galanin (1-29) binding in rat brain in vitro (IC50 = 3 - 15 nM). Attenuates the antidepressant effects of fluoxetine and blocks galanin-induced food intake in vivo. Also exhibits weak partial agonist activity at peripheral GAL2 receptors at doses > 100 nM.

Isoproterenol (Norisodrine) is a non-selective and orally active β-adrenoceptor agonist.Isoproterenol is a potent peripheral vasodilator and bronchodilator.Isoproterenol can be used in the study of bradycardia and bronchial asthma for the treatment of heart block, bradycardia.

Lys-[Des-Arg9]Bradykinin,TFA is Endogenous potent and highly selective bradykinin B1 receptor agonist (Ki values are 0.12 and > 30000 nM at human B1 and B2 receptors respectively). Hypotensive agent that reduces peripheral vascular resistance in vivo. 16-fold more potent than [Des-Arg9]-Bradykinin.

ZD-0892 is a selective and potent inhibitor of neutrophil elastase, targeting human neutrophil elastase and porcine pancreatic elastase with Kis of 6.7 nM and 200 nM, respectively.

ACY-1083 is a selective, brain-penetrating HDAC6 inhibitor (IC50: 3 nM) that effectively reverses chemotherapy-induced peripheral neuropathy.

2-Iodomelatonin is a potent agonist of melatonin receptor 1 (MT1) with a Ki value of 28 pM, exhibiting over 5-fold selectivity for MT1 compared to MT2. It can be used to identify, characterize, and localize melatonin binding sites in the brain and peripheral tissues.

Alosetron hydrochloride (GR 68755) is the hydrochloride salt form of alosetron, a potent and selective 5-HT3 receptor antagonist. Alosetron blocks the actions of serotonin at 5-HT3 sites in the peripheral nervous system, particularly on enteric and nociceptive sensory neurons, thereby affecting the regulation of visceral pain, decreasing gastrointestinal contraction and motility, and decreasing gastrointestinal secretions.

Yangambin is a selective antagonist of the cardiovascular effects of platelet activating factor (PAF); it has hypotensive effect, which is probably due to a peripheral vasodilatation that involves, at least, the inhibition the Ca2+ influx through voltage-gated Ca2+ channels. Yangambin also has central nervous system activity.

Frakefamide is unable to penetrate the blood-brain-barrier and enter the central nervous system. Frakefamide TFA is a potent analgesic that acts as a peripheral active μ-selective receptor agonist.

FI-700 is a novel and potent FLT3 inhibitor with promising antileukemia activity. FI-700 showed a potent IC(50) value against FLT3 kinase at 20 nmol/L in an in vitro kinase assay. FI-700 showed selective growth inhibition against mutant FLT3-expressing leukemia cell lines and primary acute myeloid leukemia cells, whereas it did not affect the FLT3 ligand (FL)-driven growth of Wt-FLT3-expressing cells. Oral administration of FI-700 induced the regression of tumors in a s.c. tumor xenograft model and increased the survival of mice in an i.v. transplanted model. Furthermore, FI-700 treatment eradicated FLT3/ITD-expressing leukemia cells, both in the peripheral blood and in the bone marrow. (Source: Clin Cancer Res. 2007 Aug 1;13(15 Pt 1):4575-82.)

Cav 3.2 Inhibitor 4 (Compound 21) is a selective and potent inhibitor of the T-type calcium channel (Ca v 3.2), demonstrating peripheral restriction with an IC50 value of 0.6 μM. It is utilized in atrial fibrillation research [1].

GSK2245035 is a highly selective intranasal TLR7 agonist with preferential Type-1 interferon (IFN)-stimulating properties (pEC50s: 9.3 and 6.5 for IFNα and TFNα). It effectively suppresses allergen-induced Th2 cytokine production in human peripheral blood

Frakefamide TFA is a potent analgesic acting as a μ-selective receptor agonist with peripheral activity, unable to cross the blood-brain barrier to enter the central nervous system [1] [2].

Frakefamide, a potent analgesic, functions as a peripheral active μ-selective receptor agonist and cannot penetrate the blood-brain barrier to enter the central nervous system.

AZD2906, a selective glucocorticoid receptor (GR) agonist, demonstrates inhibitory concentrations (IC50s) of 2.2 nM in human GR, 0.3 nM in rat peripheral blood mononuclear cells (PBMC), 41.6 nM in human whole blood, and 7.5 nM in rat whole blood, respectively[1]. Additionally, it induces an increase in micronucleated immature erythrocytes within rat bone marrow.

AChE-IN-22 (compound 10q) is a selective acetylcholinesterase (AChE) inhibitor with IC50 values of 0.88 μM for AChE and 10 μM for BuChE. It binds to both the catalytic active site (CAS) and peripheral anionic site (PAS) of AChE and is used in Alzheimer's disease research.

BTK-IN-8 is a potent, selective, peripheral covalent BTK inhibitor with an IC50 value of 0.22 nM and a Kd value of 0.91 nM. BTK-IN-8 exhibits good potency in whole blood CD69 cells with an IC50 value of 0.029 μM.

BI99179 is a potent and selective type I fatty acid synthase (FAS) inhibitor with an IC50 of 79 nM and it exhibits significant exposure (both peripheral and central) upon oral administration in rats[1].

Helianorphin-19 is a high affinity, potent and selective κ-opioid receptor (KOR) agonist (Ki = 25 nM; EC50= 45 nM). Helianorphin-19 exhibits approximately 200-fold selectivity for KOR over μ and δ-opioid receptors.In vivoHelianorphin-19 shows potent peripheral analgesic efficacy in a mouse model of visceral pain without affecting motor coordination/sedation.

Atomoxetine (HSDB 7352) is a selective norepinephrine inhibitor that may cause an increase in blood pressure by increasing norepinephrine concentrations in peripheral sympathetic neurons .Atomoxetine is a highly selective antagonist of presynaptic norepinephrine transporters with little or no affinity for other norepinephrine receptors or other neurotransmitter transporters or receptors, but has little or no affinity for 5- hydroxytryptamine transporter. Atomoxetine selectively inhibits reuptake of norepinephrine and can be used to treat adolescents with ADHD and chronic tics.

Adenosine receptor inhibitor 1 is a highly potent and selective antagonist of adenosine receptor (AR), exhibiting exceptional affinity for A1 AR, A2A AR, A2B AR, and A3 AR, with respective Ki values of >1000, 68.5, >1000, >1000 nM. This compound demonstrates notable antinociceptive, anti-inflammatory, and peripheral analgesic properties, holding great promise for investigating cancer and neurodegenerative diseases [1].

Otenzepad (AF-DX 116) is a selective M2 mAChR antagonist with IC50 values of 386 nM in rat heart and 640 nM in rabbit peripheral lung.

AM6545 is a selective and potent peripheral restricted cannabinoid receptor 1 (CB1) antagonist that inhibits the CB2 receptor, ameliorates hypometabolic obesity and improves adipokine secretion in monosodium glutamate-induced obese mice, and may be useful in the study of obesity and diabetes.

Naldemedine (S 297995) is a peripheral selective μ-opioid receptor antagonist being developed by Shionogi for the treatment of opioid-induced adverse reactions, including constipation, nausea, and vomiting. They are usually well tolerated, mainly with mil

Kurtoxin is a selective Cav3 (T-type) voltage-gated Ca2+ channel gating inhibitor with a dissociation constant (Kd) of 15 nM for the Cav3.1 (α1G T-type) Ca2+ channel. It exhibits high-affinity interactions with native neuronal high-threshold L-type, N-type, and P-type Ca2+ channels in both central and peripheral neurons and displays cross-reactivity with the voltage-gated Na+ channel [1].

Endogenous potent and highly selective bradykinin B1 receptor agonist (Ki values are 0.12 and > 30000 nM at human B1 and B2 receptors respectively). Hypotensive agent that reduces peripheral vascular resistance in vivo. 16-fold more potent than [Des-Arg9]

FB49 is a selective Bcl-2-associated athanogene 3 (BAG3) inhibitor with a Ki of 45 μM. It inhibits the proliferation of human tumoral cells without affecting the viability of human peripheral mononuclear cells. Additionally, FB49 arrests the cell cycle at the G1 phase and induces apoptosis and autophagy in treated medulloblastoma HD-MB03 cells [1].

Biperiden Hydrochloride (KL 373 Hydrochloride) is an antiparkinsonian agent, which is the selective central M1 cholinoreceptors blocker and it is used for the adjunctive treatment of all forms of Parkinson's disease (postencephalitic, idiopathic, and arte

Radiprodil (RGH-896) (RGH-896) is an orally active and selective NMDA NR2B receptors antagonist. It was a potential treatment of neuropathic pain associated with diabetic peripheral neuropathy (DPNP).

Tenofovir diphosphate is an inhibitor of HIV reverse transcriptase (Kis = 0.022 and 1.55 μM for RNA and DNA, respectively) and hepatitis B virus (HBV) polymerase (Ki = 0.18 μM). It is selective for these enzymes over DNA polymerase α and β, as well as mitochondrial DNA polymerase γ (Kis = 5.2, 81.7, and 59.5 μM, respectively). Tenofovir diphosphate is formed intracellularly through phosphorylation of the prodrugs tenofovir and tenofovir disoproxil by nucleotide kinases. Increased levels of tenofovir diphosphate in isolated peripheral blood mononuclear cells (PBMCs) correlate with a decrease in the risk of simian HIV (SHIV) acquisition in a macaque model of rectal SHIV transmission.

PD 140376 is a highly selective antagonist radioligand for the cholecystokinin(B)-gastrin receptor in guinea pig gastric mucosa & cerebral cortex in the peripheral and central nervous systems.

Lesogaberan (AZD-3355) hydrochloride is a potent and selective GABA B receptor agonist with an EC 50 of 8.6 nM for human recombinant GABA B receptor. The affinity ( K i s) of Lesogaberan hydrochloride for rat GABA B and GABA A receptors, as measured by displacement of GABA binding in brain membranes: 5.1 nM and 1.4 μM, respectively. Lesogaberan hydrochloride inhibits transient lower esophageal sphincter relaxation through a peripheral mode of action .

SR 57227A is a highly selective of peripheral and central 5-HT3 receptors and an inhibitor of NMDA receptor-mediated responses in rat cortical pyramidal cells. It exhibits anti-depressant like effects in rats and decreased isolation-induced aggressive beh

KRH-1636 is an orally active, selective and extremely potent CXC chemokine receptor 4 antagonist. KRH-1636 exhibits a potent and selective anti-HIV-1 activity. KRH-1636 efficiently blocked replication of various T cell line-tropic (X4) HIV type 1 (HIV-1) in MT-4 cells and peripheral blood mononuclear cells through the inhibition of viral entry and membrane fusion via the CXC chemokine receptor (CXCR)4 coreceptor but not via CC chemokine receptor 5. KRH-1636 also inhibits binding of the CXC chemokine, stromal cell-derived factor 1alpha, to CXCR4 specifically and subsequent signal transduction. KRH-1636 prevented monoclonal antibodies from binding to CXCR4 without down-modulation of the coreceptor. KRH-1636 seems to be a promising agent for the treatment of HIV-1 infection.

CGP 36742 is a selective antagonist of the GABAB receptor that can penetrate the blood-brain barrier after peripheral administration (IC50: 32 μM). It is useful in the treatment of depression.

KZR-616, a first-in-class inhibitor of the immunoproteasome, selectively targets the LMP7 (IC50: 39/57 nM=hLMP7/mLMP7) and LMP2 (IC50: 131/179 nM=hLMP7/mLMP7) subunits of the immunoproteasome. KZR-616 has the potential for the research of multiple autoimmune diseases[1][2]. KZR-616 also inhibits MECL-1 subunit (IC50=623 nM) and constitutive proteasome β5 subunit (IC50=688 nM). KZR-616 maintains LMP7 and LMP2 selective inhibition in MOLT-4 cells. KZR-616 (250 nM) shows a comparable cytokine inhibition profile peripheral blood mononuclear cells (PBMC)[1].KZR-616 is an immunoproteasome-selective inhibitor identified based on the optimization of ONX-0914 and PR-924 [3]. KZR-616 (5 mg/kg; i.v.; dosing was repeated on days 6, 8, 11, and 13) shows efficacy in the anticollagen antibody induced arthritis (CAIA) model[1]. [1]. Johnson HWB, et al. Required Immunoproteasome Subunit Inhibition Profile for Anti-Inflammatory Efficacy and Clinical Candidate KZR-616 ((2 S,3 R)- N-(( S)-3-(Cyclopent-1-en-1-yl)-1-(( R)-2-methyloxiran-2-yl)-1-oxopropan-2-yl)-3-hydroxy-3-(4-methoxyphenyl)-2-(( S)-2-(2-morpholinoacetamido)propanamido)propenamide). J Med Chem. 2018 Dec 27;61(24):11127-11143. [2]. Muchamuel T, et al. FRI0296 Kzr-616, a selective inhibitor of the immunoproteasome, blocks the disease progression in multiple models of systemic lupus erythematosus (SLE). Annals of the Rheumatic Diseases 2018;77:685. [3]. Xi J, et al. Immunoproteasome-selective inhibitors: An overview of recent developments as potential drugs for hematologic malignancies and autoimmune diseases. Eur J Med Chem. 2019;182:111646.

CR 665 (JNJ 38488502) is a peripherally selective κ-opioid agonist with an EC50 of 10.9 nM for kappa opioid receptor activation, used in peripheral pain research.

Huwentoxin-IV TFA is a potent, selective blocker of sodium channels, specifically inhibiting neuronal Nav1.7, Nav1.2, Nav1.3, and Nav1.4 with IC50 values of 26, 150, 338, and 400 nM, respectively. It preferentially targets the peripheral nerve subtype Nav1.7 by interacting with neurotoxin receptor site 4, demonstrating analgesic effects in animal models of inflammatory and neuropathic pain [1] [2].

BLX3887 is an inhibitor of 15-lipoxygenase type 1 (15-LO-1; IC50 = 32 nM in a cell-free enzyme assay).1 It is selective for 15-LO-1 over 15-LO-2, which it does not inhibit, 5-LO (IC50 = 472 nM), and 12-LO (IC50 = 3,310 nM). BLX3887 inhibits the production of 15-LO metabolites selectively in eosinophils over neutrophils when used at a concentration of 10 μM. It also inhibits endocytosis in, and the migration of, isolated human peripheral blood mononuclear cell-derived dendritic cells in vitro. |1. Archambault, A.-S., Turcotte, C., Martin, C., et al. Comparison of eight 15-lipoxygenase (LO) inhibitors on the biosynthesis of 15-LO metabolites by human neutrophils and eosinophils. PLoS One 13(8), e0202424 (2018).

PNU-282987 (free base) is a potent agonist of α7 nicotinic acetylcholine receptor (nAChR) with an EC50 of 154 nM and a functional antagonist of the 5-HT3 receptor with an IC50 of 4541 nM. It can be used for central and peripheral nervous system studies[1].

C3001a is a selective activator for TREK, against other two-pore domain K+(K2P) channels. C3001a binds to the cryptic binding site formed by P1 and TM4 in TREK-1. C3001a targets TREK channels in the peripheral nervous system to reduce the excitability of nociceptive neurons. In neuropathic pain, C3001a alleviated spontaneous pain and cold hyperalgesia. In a mouse model of acute pancreatitis, C3001a alleviated mechanical allodynia and inflammation. C3001a represents a lead compound which could advance the rational design of peripherally acting analgesics targeting K2P channels without opioid-like adverse effects.

S1P1 agonist 5 is a selective, orally active S1P1 agonist. S1P1 agonist 5 inhibits the drainage of lymphocytes from lymphoid tissue into peripheral blood. S1P1 agonist 5 has potential for studies in multiple sclerosis (MS).

CAY10508 is a potent and selective inverse agonist for the central cannabinoid (CB1) receptor with therapeutic potential for treating obesity and drug dependence, lacking psychotropic effects. It exhibits a Ki value of 243 nM and an EC50 of 195 nM. At a concentration of 10 µM, CAY10508 displaces [3H]-CP-55,940 with 100% efficacy at the CB1 receptor and 35% at the peripheral cannabinoid (CB2) receptor. Its inverse agonist activity at the CB1 receptor was confirmed through a [35S]-GTPγS binding assay.

Maprotiline hydrochloride (Psymion) is a bridged-ring tetracyclic antidepressant that is both mechanistically and functionally similar to the tricyclic antidepressants, including side effects associated with its use.

Maprotiline inhibits cell proliferation and metastasis with anticancer effects. Maprotiline induces apoptosis in cancer cells by targeting ERK signaling pathway and CRABP1. Maprotiline is a highly selective norepinephrine reuptake blocker with potent antidepressant properties. [1][2].