Endomorphin-2 |
| Catalog No.GC10059 |
L'endomorphine-2, un agoniste hautement sélectif et à haute affinité du récepteur μ-opioïde, présente des affinités raisonnables pour les sites de liaison kappa3, avec une valeur Ki comprise entre 20 et 30 nM.
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Cas No.: 141801-26-5
Sample solution is provided at 25 µL, 10mM.
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Endomorphin 2, a high affinity, highly selective agonist of the μ-opioid receptor, displays reasonable affinities for kappa3 binding sites, with Ki value between 20 and 30 nM.
Endomorphin 2 is an endogenous opioid peptide and one of the two Endomorphins. It is a high affinity, highly selective agonist of the μ-opioid receptor, and along with Endomorphin 1 (EM-2). The two Endomorphins display reasonable affinities for kappa3 binding sites, with Ki values between 20 and 30 nM. Endomorphin 1 and Endomorphin 2 compete both μ1 and μ2 receptor sites quite potently. Endomorphins have little appreciable affinity for either delta or kappa1 binding sites, with Ki values greater than 500 nM[1].
Both Endomorphin 1 and Endomorphin 2 are potent analgesics with peak effects seen at 10 and 15 min, respectively. All subsequent studies are performed at peak effect. Both compounds are fully active supraspinally and spinally, with no indication of ceiling effects. Endomorphin 1 is significantly more potent spinally than supraspinally and, at the spinal level, it is significantly more potent than Endomorphin 2. The response of both agents are readily reversed by naloxone. β-FNA, a highly selective μ antagonist, effectively reverses the actions of both Endomorphins. Both Endomorphin 1 and Endomorphin 2 display a profile similar to morphine. Neither compound have analgesic activity in CXBK mice at a dose which produced over 70% analgesia in control CD-1 mice[1].
Reference:
[1]. Goldberg IE, et al. Pharmacological characterization of endomorphin-1 and endomorphin-2 in mouse brain. J Pharmacol Exp Ther. 1998 Aug;286(2):1007-13.
Review for Endomorphin-2
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Review for Endomorphin-2
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