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CAS No. : 680590-49-2
MCE 国际站:EMPA
产品活性:EMPA 是一种高亲和力的,可逆的选择性 orexin OX2 受体拮抗剂。[3H] EMPA 与人和大鼠 OX2-HEK293 膜结合,KD 值分别为 1.1 和 1.4 nM。
研究领域:GPCR/G Protein | Neuronal Signaling
作用靶点:Orexin Receptor (OX Receptor)
In Vitro: EMPA competitively antagonizes orexin-A-and orexin-B-evoked accumulation of [3H]inositol phosphates (IP) at hOX2 receptors with pA2 values of 8.6 and 8.8 respectively.
EMPA displaces the [3H]EMPA binding from cell membranes containing human and rat OX2 receptors, with Ki values of 1.10±0.24 nM and 1.45±0.13 nM, respectively.
EMPA shows an IC50=5.75 µM, Ki=2.63 µM, and IC50=12.8 µM, Ki=5.8 µM in the binding assay at human and mouse V1a receptors, respectively.
In CHO(dHFr-) cells stably expressing hOX2 receptors, EMPA inhibits orexin-A-or orexin-B-evoked [Ca2+]i response with IC50s of 8.8±1.7 nM and 7.9±1.7 nM, respectively.
In Vivo: EMPA (1-300 mg/kg; i.p.) dose-dependently reverses this [Ala11,D-Leu15]orexin-B-induced hyperlocomotion without itself significantly affecting locomotor activity (LMA) in male NMRI mice.
EMPA (3-30 mg/kg; i.p.) induces a significant and dose-dependent reduction in the baseline LMA in france and male Wistar rats. EMPA (3-30 mg/kg; i.p.) demonstrates a clear dose-dependent inhibition of spontaneous activity as compared with vehicle-treated animals.
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