Therapeutic potential of nicotine for methamphetamine-induced impairment of sensorimotor gating: Involvement of pallidotegmental neurons

Hiroyuki Mizoguchi, Sawako Arai, Hiroyuki Koike, Daisuke Ibi, Hiroyuki Kamei, Toshitaka Nabeshima, Hyoung Chun Kim, Kazuhiro Takuma, Kiyofumi Yamada

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12 Citations (Scopus)

Abstract

Introduction: We have previously found that a disruption to prepulse inhibiton (PPI) induced by methamphetamine (METH) is associated with impaired functioning of pallidotegmental neurons, which play a crucial role in PPI of the startle reflex, through the activation of gamma-aminobutyric acid type B receptors in pedunculopontine tegmental neurons in mice. Objectives: Here, we examined the effect of nicotine on METH-induced impairment of PPI of the startle reflex focusing on dysfunctional pallidotegmental neurons and the neural system. Results: Nicotine (0.15-0.5 mg/kg) ameliorated the deficit in PPI induced by acute METH, and the ameliorating effect of nicotine was antagonized by nicotinic receptor antagonists such as methyllycaconitine and dihydro-β-erythroidine. The acute METH-induced disruption of PPI was accompanied by suppression of c-Fos expression in the lateral globus pallidus (LGP) as well as its induction in the caudal pontine reticular nucleus (PnC) in mice subjected to the PPI test. Nicotine-induced amelioration of PPI deficits in METH-treated mice was accompanied by a reversal of the changes in c-Fos expression in both the LGP and PnC to the basal level. Conclusions: Nicotine is effective in ameliorating the impairment of PPI caused by METH, which may be associated with normalization of the pallidotegmental neurons.

Original languageEnglish
Pages (from-to)235-243
Number of pages9
JournalPsychopharmacology
Volume207
Issue number2
DOIs
Publication statusPublished - 12-2009

All Science Journal Classification (ASJC) codes

  • Pharmacology

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    Mizoguchi, H., Arai, S., Koike, H., Ibi, D., Kamei, H., Nabeshima, T., Kim, H. C., Takuma, K., & Yamada, K. (2009). Therapeutic potential of nicotine for methamphetamine-induced impairment of sensorimotor gating: Involvement of pallidotegmental neurons. Psychopharmacology, 207(2), 235-243. https://doi.org/10.1007/s00213-009-1651-z