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- W4306412184 abstract "Abstract Previously, bupropion (BUP), a norepinephrine (NE)/dopamine (DA) transporter blocker and nicotinic acetylcholine receptors (nAChRs) antagonist, was found to intensify methamphetamine (METH) craving behaviours in mice. Intense craving causes relapse in drug dependence. This study characterized local field potential (LFP) patterns in the brain regions associated with METH‐conditioned place preference (CPP) enhanced by BUP. Male Swiss albino ICR mice were implanted with LFP electrodes to the ventral tegmental area (VTA), medial prefrontal cortex (mPFC) and the nucleus accumbens core (NAcc). Animals received sessions to learn the association between injection effects (1 mg/kg METH and normal saline) with contextual environments (METH‐ and saline‐paired compartments) during the conditioning phase. A total of 20 mg/kg BUP was given to animals before LFP, and behaviour recording in the CPP apparatus during the post‐conditioning phase. The results showed that increased CPP scores and % number of entries to the METH‐paired zone, as well as changes in VTA, mPFC and NAcc spectral powers and coherence among these areas, were associated with METH‐CPP. Treatment with BUP increased VTA delta and gamma I, decreased mPFC alpha, increased NAcc gamma I and decreased gamma II powers. Coherence analyses revealed that BUP decreased gamma II VTA–mPFC and increased beta and gamma I VTA–NAcc connectivity. Altogether, BUP produced additional effects to that of METH‐CPP alone. These findings demonstrated changes in neural circuit activities associated with METH‐CPP intensified by BUP. Moreover, modulation of NE/DA systems and/or nAChRs actions in the VTA–cortico–accumbens loop might underlie METH craving and dependence." @default.
- W4306412184 created "2022-10-17" @default.
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- W4306412184 date "2022-10-17" @default.
- W4306412184 modified "2023-09-26" @default.
- W4306412184 title "Neural signaling of methamphetamine craving and seeking intensified by bupropion in the ventral tegmental area–cortico–accumbens circuitry in mice" @default.
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- W4306412184 doi "https://doi.org/10.1111/adb.13240" @default.
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