Ifenprodil attenuates the acquisition and expression of methamphetamine-induced behavioral sensitization and activation of Ras-ERK1/2 cascade in the caudate putamen

Copyright © 2016 IBRO. Published by Elsevier Ltd. All rights reserved..

Chronic discontinuous use of many psychomotor stimulants leads to behavioral sensitization and, owing to it shares common mechanisms with relapse, most researchers use its animal model to explore the neurobiological mechanisms of addiction. Recent studies have proved that N-methyl-d-aspartate receptors (NMDARs) are implicated in psychomotor stimulant-induced behavioral sensitization. However, the function of GluN2B-containing NMDARs and their potential downstream cascade(s) in the acquisition and expression of behavioral sensitization to methamphetamine (METH) have not been explored. In this study, 2.5, 5, and 10mg/kg ifenprodil, the specific inhibitor of GluN2B, was used to explore the function of these receptors in distinct phases of behavioral sensitization to METH in mice. Then, using western blot, Ras, pERK1/2/ERK1/2, and ΔFosB levels in the prefrontal cortex (PFc), nucleus accumbens (NAc), and caudate putamen (CPu) were detected. Behavioral results showed that low-dose ifenprodil attenuated the acquisition and expression of behavioral sensitization to METH significantly. Western blot analysis revealed that pre-injection of low-dose ifenprodil in the acquisition markedly attenuated METH-induced ascent of Ras, pERK1/2/ERK1/2, and ΔFosB protein levels in the CPu. However, pre-treatment in the expression only affected the alterations of Ras and pERK1/2/ERK1/2 levels in the CPu. Moreover, chronic METH administration increased pERK1/2/ERK1/2 level in the NAc. In conclusion, GluN2B-containing NMDARs contribute to both the acquisition and expression of behavioral sensitization to METH in mice. Furthermore, the acquisition phase might be mediated by the Ras-ERK1/2-ΔFosB cascade in the CPu while the expression phase may be regulated by the Ras-ERK1/2 cascade in the CPu.

Medienart:

E-Artikel

Erscheinungsjahr:

2016

Erschienen:

2016

Enthalten in:

Zur Gesamtaufnahme - volume:335

Enthalten in:

Neuroscience - 335(2016) vom: 29. Okt., Seite 20-9

Sprache:

Englisch

Beteiligte Personen:

Li, Lu [VerfasserIn]
Qiao, Chuchu [VerfasserIn]
Chen, Gang [VerfasserIn]
Qian, Hongyan [VerfasserIn]
Hou, Ying [VerfasserIn]
Li, Tao [VerfasserIn]
Liu, Xinshe [VerfasserIn]

Links:

Volltext

Themen:

44RAL3456C
Behavioral sensitization
Caudate putamen
Central Nervous System Stimulants
Ifenprodil
Journal Article
Methamphetamine
N-methyl-d-aspartate receptor
Nucleus accumbens
Piperidines
R8OE3P6O5S
Receptors, N-Methyl-D-Aspartate

Anmerkungen:

Date Completed 21.12.2017

Date Revised 21.12.2017

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1016/j.neuroscience.2016.08.022

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM263608344