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Linopirdine dihydrochloride

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Chemical Structure| 113168-57-3 同义名 : DuP 996 dihydrochloride
CAS号 : 113168-57-3
货号 : A463680
分子式 : C26H23Cl2N3O
纯度 : 99%+
分子量 : 464.386
MDL号 : MFCD06245587
存储条件:

粉末 Inert atmosphere,Store in freezer, under -20°C

液体 -20°C:3-6个月-80°C:12个月

溶解度 : -
动物实验配方:
生物活性
描述 Linopirdine 2HCl (Linopirdine [DuP 996, 3, 3-bis(4-pyridinylmethyl)-1-phenylindolin-2-one]), a putative cognition enhancing drug, increases acetylcholine release in rat brain tissue and improves performance in animal models of learning and memory. Linopirdine was found to block voltage-gated, calcium-activated and leak K+ currents in a dose-dependent manner. Linopirdine was most selective for IM with an IC50 of 2.4 +/- 0.4 microM, followed by IC (measured as a medium afterhyperpolarization tail current, ImAHP) with an IC50 of 16.3 +/- 2.4 microM. Linopirdine selectively blocks IM at concentrations [3]. In addition, linopirdine blocked responses of recombinant alpha9alpha10 nicotinic cholinergic receptors (nAChRs) in a concentration-dependent manner with an IC(50) of 5.2 microM. Block by linopirdine was readily reversible, voltage independent, and surmountable at high concentrations of ACh, thus suggestive of a competitive type of interaction with the receptor[4]. Linopirdine (0.1 and 1 mg/kg) ameliorated the scopolamine-induced deficit, but at doses ranging from 0.01-1 mg/kg, it did not affect passive avoidance retention in normal (untreated) mice. Linopirdine (0.01 and 0.1, but not 1 mg/kg) ameliorated the atropine deficit. In addition, linopirdine (0.1 mg/kg) ameliorated the deficit in cognition-impaired aged rats (23-24 mo), but did not affect unimpaired aged rats. In terms of neurochemical action, linopirdine (1, 10, and 100 microM) produced a concentration-dependent increase in K(+)-evoked ACh overflow from superfused rat hippocampal slices. Also, linopirdine (10 microM) similarly increased ACh release in young control rats and cognition-impaired and nonimpaired aged rats[5].
实验方案
1mg 5mg 10mg

1 mM

5 mM

10 mM

2.15mL

0.43mL

0.22mL

10.77mL

2.15mL

1.08mL

21.53mL

4.31mL

2.15mL

参考文献

[1]Wickenden AD, Krajewski JL, et al. N-(6-chloro-pyridin-3-yl)-3,4-difluoro-benzamide (ICA-27243): a novel, selective KCNQ2/Q3 potassium channel activator. Mol Pharmacol. 2008 Mar;73(3):977-86.

[2]Kang SW, Ahn JW, Ahn SC. Inhibition of K(+) outward currents by linopirdine in the cochlear outer hair cells of circling mice within the first postnatal week. Korean J Physiol Pharmacol. 2017 Mar;21(2):251-257.

[3]Schnee ME, Brown BS. Selectivity of linopirdine (DuP 996), a neurotransmitter release enhancer, in blocking voltage-dependent and calcium-activated potassium currents in hippocampal neurons. J Pharmacol Exp Ther. 1998 Aug;286(2):709-17

[4]Gomez-Casati ME, Katz E, Glowatzki E, Lioudyno MI, Fuchs P, Elgoyhen AB. Linopirdine blocks alpha9alpha10-containing nicotinic cholinergic receptors of cochlear hair cells. J Assoc Res Otolaryngol. 2004 Sep;5(3):261-9

[5]Fontana DJ, Inouye GT, Johnson RM. Linopirdine (DuP 996) improves performance in several tests of learning and memory by modulation of cholinergic neurotransmission. Pharmacol Biochem Behav. 1994 Dec;49(4):1075-82