| Bioactivity | PD 102807 is a M4 muscarinic receptor antagonist with an IC50 of 90.7 nM. PD 102807 inhibits M1, M2, M3, M5 muscarinic receptor with IC50s of 6558.7, 3440.7, 950.0, and 7411.7 nM, respectively[1]. Antidyskinetic effect. | ||||||||||||
| Invitro | PD 102807 (example 1) shows selectivity for M4 muscarinic receptor with 72-fold (M1), 38-fold (M2), 10-fold (M3), and 82-fold (M5) more selective compared to the other receptors[1].PD 102807, a novel M4 selective antagonist, counteracts the M4 receptor-induced stimulation of [35S]-GTPγS binding to membrane G proteins with a pKB of 7.40, a value which is 63-, 33- and 10-fold higher than those display at M1 (pKB=5.60), M2 (pKB=5.88) and M3 (pKB=6.39) receptor subtypes, respectively[2].PD-102807 is an M4 mAChR preferring antagonist, with 7-28 nM affinity for M4 mAChRs, a 14-36-fold selectivity for M4 over M3 mAChRs, and 76-2600-fold selectivity for M4 over M1, M2 and M5 mAChRs[3]. | ||||||||||||
| In Vivo | Striatal perfusion of PD-102807 (3 μM) alleviates levodopa-induced dyskinesia (LID) and inhibits nigral GABA and Glu along with striatal Glu release[3]. Animal Model: | ||||||||||||
| Name | PD 102807 | ||||||||||||
| CAS | 23062-91-1 | ||||||||||||
| Formula | C23H24N2O4 | ||||||||||||
| Molar Mass | 392.45 | ||||||||||||
| Appearance | Solid | ||||||||||||
| Transport | Room temperature in continental US; may vary elsewhere. | ||||||||||||
| Storage |
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| Reference | [1]. C E Augelli-Szafran, et al. Identification and characterization of m4 selective muscarinic antagonists. Bioorg Med Chem Lett. 1998 Aug 4;8(15):1991-6. [2]. M C Olianas, et al. PD 102807, a novel muscarinic M4 receptor antagonist, discriminates between striatal and cortical muscarinic receptors coupled to cyclic AMP. Life Sci. 1999;65(21):2233-40. [3]. Alberto Brugnoli, et al. Striatal and nigral muscarinic type 1 and type 4 receptors modulate levodopa-induced dyskinesia and striato-nigral pathway activation in 6-hydroxydopamine hemilesioned rats. Neurobiol Dis. 2020 Oct;144:105044. |