Effects of Naltrexone and Acamprosate on Alcohol-Induced NGFI-A Expression in Mouse Brain

Abstract

In search for the substrate of naltrexone and acamprosate action on alcohol craving, we investigated the effects of ethanol alone and combined with naltrexone or acamprosate on expression of nerve growth factor-inducible clone A (NGFI-A; zif268). In Experiments 1 and 3, alcohol (2 g/kg) alone or in combination with naltrexone (15 mg/kg) or acamprosate (300 mg/kg) was injected intraperitoneally into mice. In Experiment 2, treatment was nor-BNI (0.5 mg/kg) to investigate whether the effect of naltrexone involved blockade of κ-opioid receptors. Both ethanol and naltrexone alone induced NGFI-A in the central amygdala, but not in several other areas; these effects were additive. However, acamprosate alone or in combination with ethanol had no effect on NGFI-A mRNA, while nor-BNI induced NGFI-A mRNA in the basolateral amygdala. The central amygdala appears to be an important target of both alcohol and naltrexone. Acamprosate may not share the site of action with naltrexone despite being used for the same therapeutic purpose.

DOI: 10.1007/s11064-008-9687-8

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Cite this paper

@article{Lindholm2008EffectsON, title={Effects of Naltrexone and Acamprosate on Alcohol-Induced NGFI-A Expression in Mouse Brain}, author={Jeanette Lindholm and Marc Guitart-Masip and Homa Hassankhali and Sara Landgren and Camille Nicoleau and Lydia Gim{\'e}nez-Llort and Lars Terenius and Sven Ove {\"{O}gren and Bj{\"{o}rn Johansson}, journal={Neurochemical Research}, year={2008}, volume={33}, pages={2062-2069} }