SKU : MC524357
CAS Number : 145-13-1
Molecular Formula : C21H32O2 | Molecular Weight : 316.48
Synonyms : 3β-Hydroxy-5-pregnen-20-one
Quote RequestPurity | NLT 98% |
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Storage | at 20ºC 2 years |
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Chemical Name | Pregnenolone |
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CAS Number | 145-13-1 |
MDL Number | MFCD00003628 |
Molecular Formula | C21H32O2 |
Molecular Weight | 316.48 |
Synonyms | 3β-Hydroxy-5-pregnen-20-one |
Pregnenolone (3β-Hydroxy-5-pregnen-20-one) is a powerful neurosteroid, the main precursor of various steroid hormones including steroid ketones. Pregnenolone acts as a signaling-specific inhibitor of cannabinoid CB1 receptor, inhibits the effects of tetrahydrocannabinol (THC) that are mediated by the CB1 receptors. Pregnenolone can protect the brain from cannabis intoxication[1][2]. IC50 & Target: Cannabinoid CB1 receptor[1] In Vitro: CB1 receptor stimulation increases brain Pregnenolone levels, which in turn exerts a negative feedback on the activity of the CB1 receptor antagonizing most of the known behavioral and somatic effects of THC. Pregnenolone likely acts as a signaling-specific negative allosteric modulator binding to a site distinct from that occupied by orthosteric ligands. Pregnenolone does not modify agonist binding but only agonist efficacy[1].
The effect of THC is significantly attenuated when slices are pre-treated with Pregnenolone 100 nM (15.1±1.8 % of inhibition). These effects are likely due to a pre-synaptic action of Pregnenolone. Thus, Pregnenolone blocks the increase in paired-pulse ratio (PPR) induced by THC but does not modify either the amplitude or the decay time of miniature EPSC (mEPSC)[1]. In Vivo: Pregnenolone administration (2-6 mg/kg) blocks THC-induced food-intake in Wistar rats and in C57BL/6N mice, and blunts the memory impairment induced by THC in mice, but it does not modify these behaviors per se. Injections of Pregnenolone (2 and 4mg/kg) before each self-administration session reduce the intake of WIN 55,212-2 and reduce the break-point in a progressive ratio schedule[1].
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