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Lebourgeois S, González-Marín MC, Antol J, Naassila M, Vilpoux C. Evaluation of N-acetylcysteine on ethanol self-administration in ethanol-dependent rats. Neuropharmacology 2019; 150:112-120. [DOI: 10.1016/j.neuropharm.2019.03.010] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Revised: 02/15/2019] [Accepted: 03/06/2019] [Indexed: 12/20/2022]
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González-Marín MC, Lebourgeois S, Jeanblanc J, Diouf M, Naassila M. Evaluation of alcohol use disorders pharmacotherapies in a new preclinical model of binge drinking. Neuropharmacology 2018; 140:14-24. [DOI: 10.1016/j.neuropharm.2018.07.015] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Revised: 07/03/2018] [Accepted: 07/11/2018] [Indexed: 12/26/2022]
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Lebourgeois S, González-Marín MC, Jeanblanc J, Naassila M, Vilpoux C. Effect of N-acetylcysteine on motivation, seeking and relapse to ethanol self-administration. Addict Biol 2018; 23:643-652. [PMID: 28557352 DOI: 10.1111/adb.12521] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Revised: 03/10/2017] [Accepted: 04/11/2017] [Indexed: 02/06/2023]
Abstract
Alcohol use disorder is a chronic and highly relapsing disorder, characterized by a loss of control over alcohol consumption and craving. Several studies suggest a key role of glutamate in this disorder. In recent years, the modulation of cystine/glutamate exchange via the xc- system has emerged as a new therapeutic alternative for reducing the excitatory glutamatergic transmission observed after ethanol self-administration in both rats and humans. The objective of this study was to determine whether a treatment with N-acetylcysteine (NAC), a cystine prodrug, could reduce ethanol self-administration, ethanol-seeking behavior and reacquisition of ethanol self-administration. Male Long Evans rats were trained to self-administer 20 percent ethanol in operant cages for several weeks. Once the consumption surpassed 1 g of ethanol/kg body weight/15 minutes, the effect of an acute intraperitoneal injection of NAC (0, 25, 50 or 100 mg/kg) 1 hour before the beginning of each test was evaluated on different aspects of the operant self-administration behavior. We demonstrated antimotivational properties of NAC (100 mg/kg), as ethanol-reinforced responding was reduced in a fixed ratio (-35 percent) and in a progressive ratio schedule (-81 percent). NAC also reduced ethanol-seeking behavior (-77 percent) evaluated as extinction responding in a single extinction session. NAC was able to reduce reacquisition in rats that were abstinent for 17 days, while NAC had no effect on ethanol relapse in rats previously exposed to six extinction sessions. Overall, our results demonstrate that NAC limits motivation, seeking behavior and reacquisition in rats, making it a potential new treatment for the maintenance of abstinence.
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Affiliation(s)
- Sophie Lebourgeois
- INSERM ERI-24 GRAP, Groupe de Recherche sur l'Alcool et les Pharmacodépendances, Centre Universitaire de Recherche en Santé (CURS); Université de Picardie Jules Verne; France
| | - María Carmen González-Marín
- INSERM ERI-24 GRAP, Groupe de Recherche sur l'Alcool et les Pharmacodépendances, Centre Universitaire de Recherche en Santé (CURS); Université de Picardie Jules Verne; France
| | - Jerome Jeanblanc
- INSERM ERI-24 GRAP, Groupe de Recherche sur l'Alcool et les Pharmacodépendances, Centre Universitaire de Recherche en Santé (CURS); Université de Picardie Jules Verne; France
| | - Mickael Naassila
- INSERM ERI-24 GRAP, Groupe de Recherche sur l'Alcool et les Pharmacodépendances, Centre Universitaire de Recherche en Santé (CURS); Université de Picardie Jules Verne; France
| | - Catherine Vilpoux
- INSERM ERI-24 GRAP, Groupe de Recherche sur l'Alcool et les Pharmacodépendances, Centre Universitaire de Recherche en Santé (CURS); Université de Picardie Jules Verne; France
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Coune F, Silvestre de Ferron B, González-Marín MC, Antol J, Naassila M, Pierrefiche O. Resistance to ethanol sensitization is associated with a loss of synaptic plasticity in the hippocampus. Synapse 2016; 71. [PMID: 26898905 DOI: 10.1002/syn.21899] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Revised: 02/11/2016] [Accepted: 02/17/2016] [Indexed: 01/04/2023]
Abstract
Behavioral sensitization to repeated ethanol (EtOH) exposure induces an increase in locomotor activity in mice. However, not all animals express such sensitization. Although the literature indicated that the hippocampus may play a role in EtOH sensitization, it is not known whether behavioral sensitization to EtOH is associated with preferential changes in bidirectional synaptic plasticity, i.e., LTP and LTD, two markers of learning capabilities that have also been shown to be involved in addictive behavior. In the present study, we examined whether the vulnerability to develop and express behavioral sensitization to EtOH is associated with altered bidirectional synaptic plasticity in the CA1 area of the dorsal hippocampus. For this purpose, we analyzed both LTP and LTD in resistant and sensitized mice during the expression phase, i.e., 7 days after 10 days of repeated EtOH i.p. administration. We found that resistant mice showed a lack of LTD without changes in LTP. The lack of LTD was associated with an increase in GluN2A protein level and was not due to an altered level of neuronal activity, since no difference was observed between the number of c-FOS positive neurons in sensitized and resistant mice. Given that both types of synaptic plasticity signals may have distinct roles in specific learning and behaviors, our results suggest that resistant mice could exhibit different phenotypes in terms of learning/memory and addictive behaviors compared to sensitized ones. Synapse 71:e21899, 2017. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- F Coune
- INSERM ERI-24, GRAP, Groupe de Recherche sur l'Alcool et les Pharmacodépendances, Centre Universitaire de Recherche en Santé CHU-Sud, Université Picardie Jules Verne, Chemin du Thil, Amiens, 80025, France
| | - B Silvestre de Ferron
- INSERM ERI-24, GRAP, Groupe de Recherche sur l'Alcool et les Pharmacodépendances, Centre Universitaire de Recherche en Santé CHU-Sud, Université Picardie Jules Verne, Chemin du Thil, Amiens, 80025, France
| | - M C González-Marín
- INSERM ERI-24, GRAP, Groupe de Recherche sur l'Alcool et les Pharmacodépendances, Centre Universitaire de Recherche en Santé CHU-Sud, Université Picardie Jules Verne, Chemin du Thil, Amiens, 80025, France
| | - J Antol
- INSERM ERI-24, GRAP, Groupe de Recherche sur l'Alcool et les Pharmacodépendances, Centre Universitaire de Recherche en Santé CHU-Sud, Université Picardie Jules Verne, Chemin du Thil, Amiens, 80025, France
| | - M Naassila
- INSERM ERI-24, GRAP, Groupe de Recherche sur l'Alcool et les Pharmacodépendances, Centre Universitaire de Recherche en Santé CHU-Sud, Université Picardie Jules Verne, Chemin du Thil, Amiens, 80025, France
| | - O Pierrefiche
- INSERM ERI-24, GRAP, Groupe de Recherche sur l'Alcool et les Pharmacodépendances, Centre Universitaire de Recherche en Santé CHU-Sud, Université Picardie Jules Verne, Chemin du Thil, Amiens, 80025, France
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Zavala-Tecuapetla C, Aguileta MA, Lopez-Guerrero JJ, González-Marín MC, Peña F. Calcium-activated potassium currents differentially modulate respiratory rhythm generation. Eur J Neurosci 2008; 27:2871-84. [PMID: 18445052 DOI: 10.1111/j.1460-9568.2008.06214.x] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
The pre-Bötzinger complex (PBC) generates eupnea and sighs in normoxia and gasping during hypoxia through particular mixtures of intrinsic and synaptic properties. Among intrinsic properties, little is known about the role of Ca(2+)-activated potassium channels in respiratory rhythms generation. To examine this role, we tested the effects of openers and blockers of the large-conductance (BK) and small-conductance (SK) Ca(2+)-activated potassium channels on the respiratory rhythms recorded both in vitro and in vivo, as well as on the discharge pattern of respiratory neurons in the PBC. Activation of SK channels with 1-ethyl-2-benzimidazolinone (1-EBIO) abolished sigh-like activity and inhibited eupneic-like activity, whereas blockade of SK channels with apamine (APA) increased frequency in both rhythms. In hypoxia, APA did not affect the transition to gasping-like activity. At the cellular level, activation of SK channels abolished pacemaker activity and decreased non-pacemaker neurons discharge; opposite effects were observed with SK blockade. In contrast to SK channel modulation, either activation or blockade of BK channels with NS 1619 or iberiotoxin and paxilline, respectively, produced mild effects on eupneic-like and sigh-like bursts during normoxia in vitro. However, BK blockers prevented the changes associated with the transition to gasping-like activity in vitro and perturbed gasping generation and autoresuscitation in vivo. At the cellular level BK channel modulation did not affect respiratory neurons discharge. We conclude that K(Ca) participate in rhythm generation in a state-dependent manner; SK channels are preferentially involved in rhythm generation in normoxia whereas BK channels participate in the transition to gasping generation in hypoxia.
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Affiliation(s)
- C Zavala-Tecuapetla
- Departamento de Farmacobiología, Centro de Investigación y de Estudios Avanzados del I.P.N., México, DF, México
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