Details

Autor(en) / Beteiligte

• Brandao, N.R.N
• Libarino-Santos, M
• Marinho, E.A.V
• Oliveira, T.S
• Borges, A.L.N
• Oliveira, A.P
• Oliveira-Campos, D
• Azevedo-Souza, N
• Santos, V.F.L
• Berro, L.F
• Oliveira-Lima, A.J

Titel

Treatment with zolpidem after ethanol administration potentiates the expression of ethanol-induced behavioral sensitization in mice

Ist Teil von

• Brazilian journal of medical and biological research, 2020-01, Vol.53 (8), p.1-e10034

Ort / Verlag

Ribeirao Preto: Associacao Brasileira de Divulgacao Cientifica (ABDC)

Erscheinungsjahr

2020

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• Contradictory findings suggest that the behavioral and abuse-related effects of ethanol are mediated by its action at [alpha]1 subunit-containing [GABA.sub.A] ([alpha]1[GABA.sub.A]) receptors. In the present study, we investigated the effects of a sub-chronic post-ethanol administration treatment with zolpidem, an [alpha]1-preferring positive allosteric modulator at [GABA.sub.A] receptors, on the subsequent expression of ethanol-induced behavioral sensitization in mice. Animals received ethanol (1.8 g/kg, ip) or saline treatments every other day for 15 days (8 treatment sessions) and were subsequently treated with zolpidem (0.5 mg/kg, ip) or vehicle 4 times on alternate days. At the end of the treatment phase, animals were challenged with saline or ethanol on separate days for the evaluation of the expression of conditioned locomotion and behavioral sensitization. Eight-day treatment with ethanol did not lead to the development of ethanol-induced behavioral sensitization. Animals treated with ethanol and subsequently administered vehicle showed similar locomotion frequencies during the last ethanol challenge compared to the control group receiving ethanol for the first time. Animals treated with ethanol and subsequently administered zolpidem expressed behavioral sensitization to ethanol during the ethanol challenge. The present study adds to the literature by providing further evidence of a role of [alpha]1[GABA.sub.A] receptors on the behavioral effects of ethanol. Because of the current highly prevalent co-abuse of ethanol and benzodiazepine drugs in humans, the use of zolpidem and other [alpha]1[GABA.sub.A] receptor ligands during ethanol withdrawal should be monitored carefully. Key words: Ethanol; Behavioral sensitization; Zolpidem; Open-field; Mice