CP 96345 - CAS 132746-60-2
Category: Inhibitor
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Neurokinin Receptor
CP 96345 is an effective and selective non-peptide NK1 receptor antagonist and has been found to show activities in restraining neurogenic inflammation in vivo.
≥98% by HPLC
White Solid
CP-96345; CP 96345; CP96345; (2S,3S)-N-(2-Methoxyphenyl)methyl-2-diphenylmethyl-1-azabicyclo[2.2.2]octan-3-amine
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1.Neurokinin-1 receptor antagonists CP-96,345 and L-733,060 protect mice from cytokine-mediated liver injury.
Bang R;Sass G;Kiemer AK;Vollmar AM;Neuhuber WL;Tiegs G J Pharmacol Exp Ther. 2003 Apr;305(1):31-9.
Previously, we have shown that primary afferent sensory neurons are necessary for disease activity in T cell-mediated immune hepatitis in mice. In the present study, we analyzed the possible role of substance P (SP), an important proinflammatory neuropeptide of these nerve fibers, in an in vivo mouse model of liver inflammation. Liver injury was induced by bacterial lipopolysaccharide (LPS) in D-galactosamine (GalN)-sensitized mice. Depletion of primary afferent nerve fibers by neonatal capsaicin treatment down-regulated circulating levels of the proinflammatory cytokines tumor necrosis factor-alpha (TNFalpha) and interferon-gamma (IFNgamma) and protected mice from GalN/LPS-induced liver injury. Likewise, pretreatment of mice with antagonists of the SP-specific neurokinin-1 receptor (NK-1R), i.e., (2S,3S)-cis-2-(diphenylmethyl)-N-((2-methoxyphenyl)-methyl)-1-azabicyclo(2.2.2.)-octan-3-amine (CP-96,345) and (2S,3S)3-([3,5-bis(trifluoromethyl)phenyl]methoxy)-2-phenylpiperidine (L-733,060), dose dependently protected mice from GalN/LPS-induced liver injury. The presence of the NK-1R in the murine liver was demonstrated by reverse transcription-polymerase chain reaction, sequence analysis, and immunocytochemistry.
2.The substance P (NK1) receptor antagonist (+/-)-CP-96,345 causes sedation and motor impairment in Swiss albino mice in the black-and-white box behavioral paradigm.
Zernig G;Dietrich H;Maggi CA;Saria A Neurosci Lett. 1992 Aug 31;143(1-2):169-72.
In order to test the suggested involvement of substance P (NK1) receptors in anxiety, the non-peptide NK1 antagonist (+/-)-CP-96,345 was tested in Swiss albino mice using the black-and-white box behavioral paradigm. Intraperitoneal (+/-)-CP-96,345 dose-dependently decreased the motor activity and the number of exploratory rearings in both the brightly lit and dark compartment as well as the transitions between the compartments, whereas it increased the latency of the initial movement into the dark compartment as well as the time spent in the light section. ED50 or ID50 values ranged from 1.9 to 3.6 mg/kg and Hill slopes from 1.4 to 5.0. (+/-)-CP-96,345 also produced rotatory behavior of no preferred lateralization as well as the Straub phenomenon in some animals. The effects of (+/-)-CP-96,345 (5 mg/kg) were not affected by 2 mg/kg naloxone (i.p.) which was also ineffective when given alone. Thus, (+/-)-CP-96,345 does not display any anxiogenic effect but causes dose-dependent sedation and motor impairment.
3.Neurokinin 1 receptors mediate substance P-induced changes in ion transport in guinea-pig ileum.
Reddix RA;Cooke HJ Regul Pept. 1992 Jun 11;39(2-3):215-25.
Tachykinin receptors mediating substance P-induced secretion were examined in muscle-stripped segments of guinea-pig ileum set up in flux chambers. Changes in the short-circuit current (Isc) served as an index of active, electrogenic ion transport. Substance P evoked a transient increase in Isc which was concentration-dependent. The maximal change in Isc occurred at 1 microM concentration. [Sar9,Met(O2)11]-substance P, a neurokinin 1 (NK-1) receptor agonist, evoked a similar concentration-dependent increase in Isc. [Nle10]NKA(4-10) (1 microM) or [Pro7]NKB (1 microM), selective NK2 and NK3 agonists, respectively, had minimal effects on Isc. CP-96,345 (5 microM), a nonpeptide NK-1 antagonist, and the peptide NK-1 antagonist, GR82334 (1 microM), reduced the secretory response to substance P (50 nM) in the presence and absence of tetrodotoxin (0.2 microM). The NK2 antagonist, [Tyr5,D-Trp6,8,9,Arg10]NKA(4-10) MEN 10207 had no effect on the substance P response. Tetrodotoxin (0.2 microM) significantly reduced, but did not abolish the Isc response to substance P (1 microM) and [Sar9,Met(O2)11]substance P (1 microM). The substance P response was unaltered by 5 microM atropine and 50 microM mecamylamine.
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CAS 132746-60-2 CP 96345

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