High affinity, orally active non-opioid intracellular receptor sigma-1 (σ1R) selective agonist with in vivo efficacy in experimental mice and rats.
SA4503 is a high affinity, orally active non-opioid intracellular receptor sigma-1 (σ1R) selective agonist (IC50 = 17.4 nM against 200 nM (+)-pentazocine for binding σ1R), exhibiting ~100-fold less affinity for the sigma 2 receptor subtype (σ2R) and little or no affinity toward 36 other receptors, ion channels and second messenger systems. Oral administration is reported to elicit cerebral acetylcholine (ACh) release in rat frontal cortex and hippocampus (5-20 mg/kg p.o.) and reduce immobility time in a mouse forced swimming test (Immobility time = 214.8 s without vs. 111.6 s with 1.0 mg/kg oral dosage).
The Journal of pharmacology and experimental therapeutics, 279(1), 106-113 (1996-10-01)
We found that 1-(3,4-dimethoxyphenethyl)-4-(3-phenylpropyl) piperazine dihydrochloride (SA4503), a potent and selective sigma 1 receptor agonist, significantly enhanced the cerebral acetylcholine (ACh) release in the rat using in vivo brain microdialysis technique. Interestingly, the significant enhancement of ACh release elicited by
Two series of novel ether analogs of the sigma (σ) receptor ligand 1-[2-(3,4-dimethoxyphenyl)ethyl]-4-(3-phenylpropyl)piperazine (SA4503) have been prepared. In one series, the alkyl portion of the 4-methoxy group was replaced with allyl, propyl, bromoethyl, benzyl, phenethyl, and phenylpropyl moieties. In the
Synapse (New York, N.Y.), 69(11), 526-532 (2015-08-04)
Previous studies have shown that ligands of the sigma-1 receptor chaperone (Sig-1R) regulate pain-related behaviors. Clinical use of chemotherapeutics is often compromised due to their adverse side effects, particularly those related to neuropathy. Previous studies have shown that repeated administration
Cardiovascular diseases are risk factors for depression in humans. We recently proposed that σ1 receptor (σ1R) stimulation rescued cardiac hypertrophy and heart failure induced by transverse aortic constriction (TAC) in mice. Importantly, σ1R stimulation reportedly ameliorates depression-like behaviors in rodents.
European journal of pharmacology, 312(3), 267-271 (1996-10-03)
The immobility time in the mouse forced swimming test was dose-dependently reduced by sigma 1 receptor agonists, such as 1-(3,4-dimethoxyphenethyl)-4-(3-phenylpropyl)piperazine dihydrochloride (SA4503) and (+)-pentazocine, and non-specific sigma receptor agonists, such as 1,3-di(2-tolyl)guanidine (DTG) and (+)-N-cyclopropyl-methyl-N-methyl-1,4-diphenyl-1-yl-but-3-en-1-ylamin e hydrochloride (JO-1784). On the
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