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Kale MB, Chandurkar PA, Taksande BG, Aglawe MM, Rahangdale SR, Upaganlawar AB, Kopalli SR, Umekar MJ, Wankhede NL. Agmatine alleviates ethanol withdrawal-associated cognitive impairment and neurochemical imbalance in rats. Neurosci Lett 2024; 832:137804. [PMID: 38692559 DOI: 10.1016/j.neulet.2024.137804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Revised: 04/25/2024] [Accepted: 04/28/2024] [Indexed: 05/03/2024]
Abstract
The present study aimed to investigate the role of agmatine in the neurobiology underlying memory impairment during ethanol withdrawal in rats. Sprague-Dawley rats were subjected to a 21-day chronic ethanol exposure regimen (2.4 % w/v ethanol for 3 days, 4.8 % w/v for the next 4 days, and 7.2 % w/v for the following 14 days), followed by a withdrawal period. Memory impairment was assessed using the passive avoidance test (PAT) at 24, 48, and 72 h post-withdrawal. The ethanol-withdrawn rats displayed a significant decrease in step-through latency in the PAT, indicative of memory impairment at 72 h post-withdrawal. However, administration of agmatine (40 µg/rat) and its modulators (L-arginine, arcaine, and amino-guanidine) significantly increases the latency time in the ethanol-withdrawn rats, demonstrating the attenuation of memory impairment. Further, pretreatment with imidazoline receptor agonists enhances agmatine's effects, while antagonists block them, implicating imidazoline receptors in agmatine's actions. Neurochemical analysis in ethanol-withdrawn rats reveals dysregulated glutamate and GABA levels, which was attenuated by agmatine and its modulators. By examining the effects of agmatine administration and modulators of endogenous agmatine, the study aimed to shed light on the potential therapeutic implications of agmatinergic signaling in alcohol addiction and related cognitive deficits. Thus, the present findings suggest that agmatine administration and modulation of endogenous agmatine levels hold potential as therapeutic strategies for managing alcohol addiction and associated cognitive deficits. Understanding the neurobiology underlying these effects paves the way for the development of novel interventions targeting agmatinergic signaling in addiction treatment.
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Affiliation(s)
- Mayur B Kale
- Division of Neuroscience, Smt. Kishoritai Bhoyar College of Pharmacy, Kamptee, Nagpur, Maharashtra 441002, India; SNJB's Shriman Sureshdada Jain College of Pharmacy, Neminagar, Chandwad, Nashik, Maharashtra 423101, India.
| | - Pranali A Chandurkar
- Division of Neuroscience, Smt. Kishoritai Bhoyar College of Pharmacy, Kamptee, Nagpur, Maharashtra 441002, India.
| | - Brijesh G Taksande
- Division of Neuroscience, Smt. Kishoritai Bhoyar College of Pharmacy, Kamptee, Nagpur, Maharashtra 441002, India.
| | - Manish M Aglawe
- Division of Neuroscience, Smt. Kishoritai Bhoyar College of Pharmacy, Kamptee, Nagpur, Maharashtra 441002, India.
| | - Sandip R Rahangdale
- Division of Neuroscience, Smt. Kishoritai Bhoyar College of Pharmacy, Kamptee, Nagpur, Maharashtra 441002, India.
| | - Aman B Upaganlawar
- SNJB's Shriman Sureshdada Jain College of Pharmacy, Neminagar, Chandwad, Nashik, Maharashtra 423101, India.
| | - Spandana R Kopalli
- Department of Integrated Bioscience and Biotechnology, Sejong University, Gwangjin-gu, Seoul 05006, Republic of Korea.
| | - Milind J Umekar
- Division of Neuroscience, Smt. Kishoritai Bhoyar College of Pharmacy, Kamptee, Nagpur, Maharashtra 441002, India.
| | - Nitu L Wankhede
- Division of Neuroscience, Smt. Kishoritai Bhoyar College of Pharmacy, Kamptee, Nagpur, Maharashtra 441002, India; SNJB's Shriman Sureshdada Jain College of Pharmacy, Neminagar, Chandwad, Nashik, Maharashtra 423101, India.
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De Clerck M, Manguin M, Henkous N, d’Almeida MN, Beracochea D, Mons N. Chronic alcohol-induced long-lasting working memory deficits are associated with altered histone H3K9 dimethylation in the prefrontal cortex. Front Behav Neurosci 2024; 18:1354390. [PMID: 38495426 PMCID: PMC10941761 DOI: 10.3389/fnbeh.2024.1354390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Accepted: 02/19/2024] [Indexed: 03/19/2024] Open
Abstract
Introduction Epigenetic modifications have emerged as key contributors to the enduring behavioral, molecular and epigenetic neuroadaptations during withdrawal from chronic alcohol exposure. The present study investigated the long-term consequences of chronic alcohol exposure on spatial working memory (WM) and associated changes of transcriptionally repressive histone H3 lysine 9 dimethylation (H3K9me2) in the prefrontal cortex (PFC). Methods Male C57BL/6 mice were allowed free access to either 12% (v/v) ethanol for 5 months followed by a 3-week abstinence period or water. Spatial WM was assessed through the spontaneous alternation T-maze test. Alcoholic and water mice received daily injections of GABAB agonist baclofen or saline during alcohol fading and early withdrawal. Global levels of histone modifications were determined by immunohistochemistry. Results Withdrawal mice displayed WM impairments along with reduced prefrontal H3K9me2 levels, compared to water-drinking mice. The withdrawal-induced decrease of H3K9me2 occurred concomitantly with increased level of permissive H3K9 acetylation (H3K9ac) in the PFC. Baclofen treatment rescued withdrawal-related WM deficits and fully restored prefrontal H3K9me2 and H3K9ac. Alcohol withdrawal induced brain region-specific changes of H3K9me2 and H3K9ac after testing, with significant decreases of both histone marks in the dorsal hippocampus and no changes in the amygdala and dorsal striatum. Furthermore, the magnitude of H3K9me2 in the PFC, but not the hippocampus, significantly and positively correlated with individual WM performances. No correlation was observed between H3K9ac and behavioral performance. Results also indicate that pre-testing intraperitoneal injection of UNC0642, a selective inhibitor of histone methyltransferase G9a responsible for H3K9me2, led to WM impairments in water-drinking and withdrawal-baclofen mice. Collectively, our results demonstrate that alcohol withdrawal induced brain-region specific alterations of H3K9me2 and H3K9ac, an effect that persisted for at least three weeks after cessation of chronic alcohol intake. Conclusion The findings suggest a role for long-lasting decreased H3K9me2 specifically in the PFC in the persistent WM impairments related to alcohol withdrawal.
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Charlton AJ, Perry CJ. The Effect of Chronic Alcohol on Cognitive Decline: Do Variations in Methodology Impact Study Outcome? An Overview of Research From the Past 5 Years. Front Neurosci 2022; 16:836827. [PMID: 35360176 PMCID: PMC8960615 DOI: 10.3389/fnins.2022.836827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Accepted: 01/27/2022] [Indexed: 11/24/2022] Open
Abstract
Excessive alcohol use is often associated with accelerated cognitive decline, and extensive research using animal models of human alcohol consumption has been conducted into potential mechanisms for this relationship. Within this literature there is considerable variability in the types of models used. For example, alcohol administration style (voluntary/forced), length and schedule of exposure and abstinence period are often substantially different between studies. In this review, we evaluate recent research into alcohol-induced cognitive decline according to methodology of alcohol access, as well as cognitive behavioral task employed. Our aim was to query whether the nature and severity of deficits observed may be impacted by the schedule and type of alcohol administration. We furthermore examined whether there is any apparent relationship between the amount of alcohol consumed and the severity of the deficit, as well as the potential impact of abstinence length, and other factors such as age of administration, and sex of subject. Over the past five years, researchers have overwhelmingly used non-voluntary methods of intake, however deficits are still found where intake is voluntary. Magnitude of intake and type of task seem most closely related to the likelihood of producing a deficit, however even this did not follow a consistent pattern. We highlight the importance of using systematic and clear reporting styles to facilitate consistency across the literature in this regard. We hope that this analysis will provide important insights into how experimental protocols might influence findings, and how different patterns of consumption are more or less likely to produce an addiction-vulnerable cognitive phenotype in animal models.
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Affiliation(s)
- Annai J. Charlton
- Florey Institute of Neuroscience and Mental Health, Parkville, VIC, Australia
- Florey Department of Neuroscience and Mental Health, University of Melbourne, Parkville, VIC, Australia
| | - Christina J. Perry
- Florey Institute of Neuroscience and Mental Health, Parkville, VIC, Australia
- School of Psychological Sciences, Centre for Emotional Health, Macquarie University, North Ryde, NSW, Australia
- *Correspondence: Christina J. Perry,
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Nadia H, Fabienne M, Pierard C, Nicole M, Daniel B. Preventive Effects of Baclofen but Not Diazepam on Hippocampal Memory and Glucocorticoid Alterations After Prolonged Alcohol Withdrawal in Mice. Front Psychiatry 2022; 13:799225. [PMID: 35686185 PMCID: PMC9171496 DOI: 10.3389/fpsyt.2022.799225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Accepted: 03/22/2022] [Indexed: 11/13/2022] Open
Abstract
Our study aims at comparing in C57/Bl male mice, the impact of repeated injections of baclofen (an agonist of GABAB receptor) or diazepam (a benzodiazepine acting through a positive allosteric modulation of GABAA receptor) administered during the alcohol-withdrawal period on hippocampus-dependent memory impairments and brain regional glucocorticoid dysfunction after a short (1-week) or a long (4-week) abstinence. Hence, mice were submitted to a 6-month alcohol consumption (12%v/v) and were progressively withdrawn to water. Then, after a 1- or 4-weeks abstinence, they were submitted to a contextual memory task followed by measurements of corticosterone concentrations in the dorsal hippocampus (dHPC), the ventral hippocampus (vHPC) and the prefrontal cortex (PFC). Results showed that 1- and 4-week withdrawn mice exhibited a severe memory deficit and a significant abnormal rise of the test-induced increase of corticosterone (TICC) in the dHPC, as compared to water-controls or to mice still under alcohol consumption. Repeated daily systemic administrations of decreasing doses of diazepam (ranged from 0.5 to 0.12 mg/kg) or baclofen (ranged from 1.5 to 0.37 mg/kg) during the last 15 days of the withdrawal period, normalized both memory and TICC scores in the dHPC in 1-week withdrawn animals; in contrast, only baclofen-withdrawn mice showed both normal memory performance and TICC scores in the dHPC after a 4-week withdrawal period. In conclusion, the memory improvement observed in 4-week withdrawn mice administered with baclofen stem from the protracted normalization of glucocorticoid activity in the dHPC, a phenomenon encountered only transitorily in diazepam-treated withdrawn mice.
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Affiliation(s)
- Henkous Nadia
- Institut de Neurosciences Cognitives et Intégratives d'Aquitaine (INCIA), Université de Bordeaux, CNRS UMR 5287, Pessac, France
| | - Martins Fabienne
- Institut de Neurosciences Cognitives et Intégratives d'Aquitaine (INCIA), Université de Bordeaux, CNRS UMR 5287, Pessac, France
| | - Christophe Pierard
- Institut de Recherche Biomédicale des Armées (IRBA), Place Général Valérie André, Brétigny-sur-Orge, France
| | - Mons Nicole
- Institut de Neurosciences Cognitives et Intégratives d'Aquitaine (INCIA), Université de Bordeaux, CNRS UMR 5287, Pessac, France
| | - Beracochea Daniel
- Institut de Neurosciences Cognitives et Intégratives d'Aquitaine (INCIA), Université de Bordeaux, CNRS UMR 5287, Pessac, France
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Bar JK, Lis-Nawara A, Grelewski PG. Dental Pulp Stem Cell-Derived Secretome and Its Regenerative Potential. Int J Mol Sci 2021; 22:ijms222112018. [PMID: 34769446 PMCID: PMC8584775 DOI: 10.3390/ijms222112018] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 11/02/2021] [Accepted: 11/04/2021] [Indexed: 12/11/2022] Open
Abstract
The therapeutic potential of the dental pulp stem (DSC) cell-derived secretome, consisting of various biomolecules, is undergoing intense research. Despite promising in vitro and in vivo studies, most DSC secretome-based therapies have not been implemented in human medicine because the paracrine effect of the bioactive factors secreted by human dental pulp stem cells (hDPSCs) and human exfoliated deciduous teeth (SHEDs) is not completely understood. In this review, we outline the current data on the hDPSC- and SHED-derived secretome as a potential candidate in the regeneration of bone, cartilage, and nerve tissue. Published reports demonstrate that the dental MSC-derived secretome/conditional medium may be effective in treating neurodegenerative diseases, neural injuries, cartilage defects, and repairing bone by regulating neuroprotective, anti-inflammatory, antiapoptotic, and angiogenic processes through secretome paracrine mechanisms. Dental MSC-secretomes, similarly to the bone marrow MSC-secretome activate molecular and cellular mechanisms, which determine the effectiveness of cell-free therapy. Many reports emphasize that dental MSC-derived secretomes have potential application in tissue-regenerating therapy due to their multidirectional paracrine effect observed in the therapy of many different injured tissues.
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Montagud-Romero S, Cantacorps L, Fernández-Gómez FJ, Núñez C, Miñarro J, Rodríguez-Arias M, Milanés MV, Valverde O. Unraveling the molecular mechanisms involved in alcohol intake and withdrawal in adolescent mice exposed to alcohol during early life stages. Prog Neuropsychopharmacol Biol Psychiatry 2021; 104:110025. [PMID: 32599136 DOI: 10.1016/j.pnpbp.2020.110025] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2020] [Revised: 06/19/2020] [Accepted: 06/21/2020] [Indexed: 01/15/2023]
Abstract
Alcohol interferes with foetal development and prenatal alcohol exposure can lead to adverse effects known as foetal alcohol spectrum disorders. We aimed to assess the underlying neurobiological mechanisms involved in alcohol intake and withdrawal in adolescent mice exposed to alcohol during early life stages, in discrete brain areas. Pregnant C57BL/6 female mice were exposed to binge alcohol drinking from gestation to weaning. Subsequently, alcohol seeking and taking behaviour were evaluated in male adolescent offspring, as assessed in the two-bottle choice and oral self-administration paradigms. Brain area samples were analysed to quantify AMPAR subunits GluR1/2 and pCREB/CREB expression following alcohol self-administration. We measured the expression of mu and kappa opioid receptors both during acute alcohol withdrawal (assessing anxiety alterations by the EPM test) and following reinstatement in the two-bottle choice paradigm. In addition, alcohol metabolism was analysed by measuring blood alcohol concentrations under an acute dose of 3 g/kg alcohol. Our findings demonstrate that developmental alcohol exposure enhances alcohol intake during adolescence, which is associated with a decrease in the pCREB/CREB ratio in the hippocampus, prefrontal cortex and striatum, while the GluR1/GluR2 ratio showed a decrease in the hippocampus. Moreover, PLAE mice showed behavioural alterations, such as increased anxiety-like responses during acute alcohol withdrawal, and higher BAC levels. No significant changes were identified for mu and kappa opioid receptors mRNA expression. The current study highlights that early alcohol exposed mice increased alcohol consumption during late adolescence. Furthermore, a diminished CREB signalling and glutamatergic neuroplasticity are proposed as underpinning neurobiological mechanisms involved in the sensitivity to alcohol reinforcing properties.
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Affiliation(s)
- Sandra Montagud-Romero
- Neurobiology of Behaviour Research Group (GReNeC-NeuroBio), Department of Experimental and Health Sciences, Universitat Pompeu Fabra, Barcelona, Spain
| | - Lídia Cantacorps
- Neurobiology of Behaviour Research Group (GReNeC-NeuroBio), Department of Experimental and Health Sciences, Universitat Pompeu Fabra, Barcelona, Spain
| | - Francisco José Fernández-Gómez
- Murcia Research Institute of Health Sciences (IMIB), Department of Pharmacology, Faculty of Medicine, University of Murcia, Murcia, Spain
| | - Cristina Núñez
- Murcia Research Institute of Health Sciences (IMIB), Department of Pharmacology, Faculty of Medicine, University of Murcia, Murcia, Spain
| | - José Miñarro
- Department of Psychobiology, Facultad de Psicología, Universitat de Valencia, Avda. Blasco Ibáñez, 21, 46010 Valencia, Spain; Red Temática de Investigación Cooperativa en Salud (RETICS-Trastornos Adictivos), Instituto de Salud Carlos III, MICINN and FEDER, Madrid, Spain
| | - Marta Rodríguez-Arias
- Department of Psychobiology, Facultad de Psicología, Universitat de Valencia, Avda. Blasco Ibáñez, 21, 46010 Valencia, Spain; Red Temática de Investigación Cooperativa en Salud (RETICS-Trastornos Adictivos), Instituto de Salud Carlos III, MICINN and FEDER, Madrid, Spain
| | - María Victoria Milanés
- Murcia Research Institute of Health Sciences (IMIB), Department of Pharmacology, Faculty of Medicine, University of Murcia, Murcia, Spain
| | - Olga Valverde
- Neurobiology of Behaviour Research Group (GReNeC-NeuroBio), Department of Experimental and Health Sciences, Universitat Pompeu Fabra, Barcelona, Spain; Red Temática de Investigación Cooperativa en Salud (RETICS-Trastornos Adictivos), Instituto de Salud Carlos III, MICINN and FEDER, Madrid, Spain; IMIM-Hospital del Mar Medical Research Institute, Neurosciences Programme, Barcelona, Spain.
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Gatta E, Saudagar V, Auta J, Grayson DR, Guidotti A. Epigenetic landscape of stress surfeit disorders: Key role for DNA methylation dynamics. INTERNATIONAL REVIEW OF NEUROBIOLOGY 2020; 156:127-183. [PMID: 33461662 DOI: 10.1016/bs.irn.2020.08.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Chronic exposure to stress throughout lifespan alters brain structure and function, inducing a maladaptive response to environmental stimuli, that can contribute to the development of a pathological phenotype. Studies have shown that hypothalamic-pituitary-adrenal (HPA) axis dysfunction is associated with various neuropsychiatric disorders, including major depressive, alcohol use and post-traumatic stress disorders. Downstream actors of the HPA axis, glucocorticoids are critical mediators of the stress response and exert their function through specific receptors, i.e., the glucocorticoid receptor (GR), highly expressed in stress/reward-integrative pathways. GRs are ligand-activated transcription factors that recruit epigenetic actors to regulate gene expression via DNA methylation, altering chromatin structure and thus shaping the response to stress. The dynamic interplay between stress response and epigenetic modifiers suggest DNA methylation plays a key role in the development of stress surfeit disorders.
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Affiliation(s)
- Eleonora Gatta
- Center for Alcohol Research in Epigenetics, Department of Psychiatry, Psychiatric Institute, University of Illinois at Chicago, Chicago, IL, United States
| | - Vikram Saudagar
- Center for Alcohol Research in Epigenetics, Department of Psychiatry, Psychiatric Institute, University of Illinois at Chicago, Chicago, IL, United States
| | - James Auta
- Center for Alcohol Research in Epigenetics, Department of Psychiatry, Psychiatric Institute, University of Illinois at Chicago, Chicago, IL, United States
| | - Dennis R Grayson
- Center for Alcohol Research in Epigenetics, Department of Psychiatry, Psychiatric Institute, University of Illinois at Chicago, Chicago, IL, United States
| | - Alessandro Guidotti
- Center for Alcohol Research in Epigenetics, Department of Psychiatry, Psychiatric Institute, University of Illinois at Chicago, Chicago, IL, United States.
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Understanding PDE4's function in Alzheimer's disease; a target for novel therapeutic approaches. Biochem Soc Trans 2020; 47:1557-1565. [PMID: 31642904 PMCID: PMC6824677 DOI: 10.1042/bst20190763] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 09/25/2019] [Accepted: 09/27/2019] [Indexed: 12/22/2022]
Abstract
Phosphodiesterases (PDEs) have long been considered as targets for the treatment of Alzheimer's disease (AD) and a substantial body of evidence suggests that one sub-family from the super-family of PDEs, namely PDE4D, has particular significance in this context. This review discusses the role of PDE4 in the orchestration of cAMP response element binding signaling in AD and outlines the benefits of targeting PDE4D specifically. We examine the limited available literature that suggests PDE4 expression does not change in AD brains together with reports that show PDE4 inhibition as an effective treatment in this age-related neurodegenerative disease. Actually, aging induces changes in PDE4 expression/activity in an isoform and brain-region specific manner that proposes a similar complexity in AD brains. Therefore, a more detailed account of AD-related alterations in cellular/tissue location and the activation status of PDE4 is required before novel therapies can be developed to target cAMP signaling in this disease.
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Mennesson M, Rydgren E, Lipina T, Sokolowska E, Kulesskaya N, Morello F, Ivakine E, Voikar V, Risbrough V, Partanen J, Hovatta I. Kainate receptor auxiliary subunit NETO2 is required for normal fear expression and extinction. Neuropsychopharmacology 2019; 44:1855-1866. [PMID: 30770891 PMCID: PMC6784901 DOI: 10.1038/s41386-019-0344-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 01/23/2019] [Accepted: 02/12/2019] [Indexed: 11/09/2022]
Abstract
NETO1 and NETO2 are auxiliary subunits of kainate receptors (KARs). They interact with native KAR subunits to modulate multiple aspects of receptor function. Variation in KAR genes has been associated with psychiatric disorders in humans, and in mice, knockouts of the Grik1 gene have increased, while Grik2 and Grik4 knockouts have reduced anxiety-like behavior. To determine whether the NETO proteins regulate anxiety and fear through modulation of KARs, we undertook a comprehensive behavioral analysis of adult Neto1-/- and Neto2-/- mice. We observed no differences in anxiety-like behavior. However, in cued fear conditioning, Neto2-/-, but not Neto1-/- mice, showed higher fear expression and delayed extinction compared to wild type mice. We established, by in situ hybridization, that Neto2 was expressed in both excitatory and inhibitory neurons throughout the fear circuit including the medial prefrontal cortex, amygdala, and hippocampus. Finally, we demonstrated that the relative amount of synaptosomal KAR GLUK2/3 subunit was 20.8% lower in the ventral hippocampus and 36.5% lower in the medial prefrontal cortex in Neto2-/- compared to the Neto2+/+ mice. The GLUK5 subunit abundance was reduced 23.8% in the ventral hippocampus and 16.9% in the amygdala. We conclude that Neto2 regulates fear expression and extinction in mice, and that its absence increases conditionability, a phenotype related to post-traumatic stress disorder and propose that this phenotype is mediated by reduced KAR subunit abundance at synapses of fear-associated brain regions.
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Affiliation(s)
- Marie Mennesson
- 0000 0004 0410 2071grid.7737.4Molecular and Integrative Biosciences Research Program, University of Helsinki, Helsinki, Finland ,0000 0004 0410 2071grid.7737.4Department of Psychology and Logopedics, Medicum, University of Helsinki, Helsinki, Finland
| | - Emilie Rydgren
- 0000 0004 0410 2071grid.7737.4Molecular and Integrative Biosciences Research Program, University of Helsinki, Helsinki, Finland
| | - Tatiana Lipina
- 0000 0004 0626 6184grid.250674.2Lunenfeld Tanenbaum Research Institute at Mount Sinai Hospital, Toronto, ON Canada ,grid.473784.bFederal State Budgetary Scientific Institution, Scientific Research Institute of Physiology and Basic Medicine, Novosibirsk, Russia ,0000000121896553grid.4605.7Novosibirsk State University, Novosibirsk, Russia ,0000 0001 2157 2938grid.17063.33Department of Pharmacology and Toxicology, University of Toronto, Toronto, ON, Canada
| | - Ewa Sokolowska
- 0000 0004 0410 2071grid.7737.4Molecular and Integrative Biosciences Research Program, University of Helsinki, Helsinki, Finland
| | - Natalia Kulesskaya
- 0000 0004 0410 2071grid.7737.4Molecular and Integrative Biosciences Research Program, University of Helsinki, Helsinki, Finland
| | - Francesca Morello
- 0000 0004 0410 2071grid.7737.4Molecular and Integrative Biosciences Research Program, University of Helsinki, Helsinki, Finland
| | - Evgueni Ivakine
- 0000 0004 0473 9646grid.42327.30Program of Genetics and Genome biology, Hospital for Sick Children, Toronto, ON, Canada
| | - Vootele Voikar
- 0000 0004 0410 2071grid.7737.4Neuroscience Center, University of Helsinki, Helsinki, Finland
| | - Victoria Risbrough
- Veterans Affairs, La Jolla, CA USA ,0000 0001 2107 4242grid.266100.3Department of Psychiatry, University of California, San Diego, CA USA
| | - Juha Partanen
- 0000 0004 0410 2071grid.7737.4Molecular and Integrative Biosciences Research Program, University of Helsinki, Helsinki, Finland
| | - Iiris Hovatta
- Molecular and Integrative Biosciences Research Program, University of Helsinki, Helsinki, Finland. .,Department of Psychology and Logopedics, Medicum, University of Helsinki, Helsinki, Finland.
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Repeated diazepam administration reversed working memory impairments and glucocorticoid alterations in the prefrontal cortex after short but not long alcohol-withdrawal periods. COGNITIVE AFFECTIVE & BEHAVIORAL NEUROSCIENCE 2019; 18:665-679. [PMID: 29713956 DOI: 10.3758/s13415-018-0595-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The study was designed to assess whether repeated administration of diazepam (Valium®, Roche)-a benzodiazepine exerting an agonist action on GABAA receptors-may alleviate both the short (1 week, 1W) and long-term (6 weeks, 6W) deleterious effects of alcohol withdrawal occurring after chronic alcohol consumption (6 months; 12% v/v) in C57/BL6 male mice. More pointedly, we first evidenced that 1W and 6W alcohol-withdrawn mice exhibited working memory deficits in a sequential alternation task, associated with sustained exaggerated corticosterone rise and decreased pCREB levels in the prefrontal cortex (PFC). In a subsequent experiment, diazepam was administered i.p. for 9 consecutive days (1 injection/day) during the alcohol withdrawal period at decreasing doses ranging from 1.0 mg/kg to 0.25 mg/kg. Diazepam was not detected in the blood of withdrawn mice at the time of memory testing, occurring 24 hours after the last diazepam injection. Repeated diazepam administration significantly improved alternation rates and normalized levels of glucocorticoids and pCREB activity in the PFC in 1W but not in 6W withdrawn mice. Thus, repeated diazepam administration during the alcohol-withdrawal period only transitorily canceled out the working memory impairments and glucocorticoid alterations in the PFC of alcohol-withdrawn animals.
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Dopamine Burden Triggers Cholesterol Overload Following Disruption of Synaptogenesis in Minimal Hepatic Encephalopathy. Neuroscience 2019; 410:1-15. [PMID: 31078686 DOI: 10.1016/j.neuroscience.2019.04.056] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Revised: 04/27/2019] [Accepted: 04/30/2019] [Indexed: 01/05/2023]
Abstract
The contribution of Dopamine (DA) to minimal hepatic encephalopathy (MHE) has been demonstrated. However, recent studies have revealed that cholesterol (CHO) treatment substantially increased the risk of dementia. The objectives of this study were to investigate whether CHO was induced by DA overload and its involvement in DA-induced cognitive impairment in MHE. Our study showed that DA treatment triggered CHO biosynthesis via the activation of JNK3/SREBP2 signaling pathway in primary cultured astrocytes. Conditioned media from DA-treated astrocytes increased CHO uptake by primary cultured neurons and disrupted synaptic formations; at the same time, inhibition of CHO synthesis and transportation from astrocytes diminished the disruption of synaptogenesis, which indicates the involvement of CHO in the perturbation of neural synaptogenesis in vitro. Secondary secretion of DA from primary cultured neurons was stimulated by CHO secreted from astrocytes. DA induced synergistic decreases of PPARγ/pERK/pCREB expressions in the presence of CHO in neurons, leading to synergistic synaptic impairment. Memory impairments were observed in MHE/DA-treated rats, which were partially rescued by atorvastatin (ATVS) treatment, confirming the involvement of CHO burden in vivo. Overall, our study suggests that DA overload triggers obvious CHO production from astrocytes. Excessive CHO in turn triggered neurons to secrete abundant DA and DA burden in combination with CHO overload elicit the cognitive decline and memory loss via PPARγ/ERK/CREB pathway in MHE.
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Dominguez G, Henkous N, Prevot T, David V, Guillou JL, Belzung C, Mons N, Béracochéa D. Sustained corticosterone rise in the prefrontal cortex is a key factor for chronic stress-induced working memory deficits in mice. Neurobiol Stress 2019; 10:100161. [PMID: 31309134 PMCID: PMC6607320 DOI: 10.1016/j.ynstr.2019.100161] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Revised: 04/01/2019] [Accepted: 04/01/2019] [Indexed: 11/25/2022] Open
Abstract
Exposure to prolonged, unpredictable stress leads to glucocorticoids-mediated long-lasting neuroendocrine abnormalities associated with emotional and cognitive impairments. Excessive levels of serum glucocorticoids (cortisol in humans, corticosterone in rodents) contribute notably to deficits in working memory (WM), a task which heavily relies on functional interactions between the medial prefrontal cortex (PFC) and the dorsal hippocampus (dHPC). However, it is unknown whether stress-induced increases in plasma corticosterone mirror corticosterone levels in specific brain regions critical for WM. After a 6 week-UCMS exposure, C57BL/6 J male mice exhibited increased anxiety- and depressive-like behaviors when measured one week later and displayed WM impairments timely associated with increased plasma corticosterone response. In chronically stressed mice, basal phosphorylated/activated CREB (pCREB) was markedly increased in the PFC and the CA1 area of the dHPC and WM testing did not elicit any further increase in pCREB in the two regions. Using microdialysis samples from freely-moving mice, we found that WM testing co-occurred with a rapid and sustained increase in corticosterone response in the PFC while there was a late, non-significant rise of corticosterone in the dHPC. The results also show that non-stressed mice injected with corticosterone (2 mg/kg i.p.) before WM testing displayed behavioral and molecular alterations similar to those observed in stressed animals while a pre-WM testing metyrapone injection (35 mg/kg i.p.), a corticosterone synthesis inhibitor, prevented the effects of UCMS exposure. Overall, the abnormal regional increase of corticosterone concentrations mainly in the PFC emerges as a key factor of enduring WM dysfunctions in UCMS-treated animals.
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Affiliation(s)
- Gaelle Dominguez
- Université de Bordeaux, CNRS UMR 5287, 33615, Pessac, France.,Université François Rabelais, Inserm U930, Parc Grandmont, 37200, Tours, France
| | - Nadia Henkous
- Université de Bordeaux, CNRS UMR 5287, 33615, Pessac, France
| | - Thomas Prevot
- Université de Bordeaux, CNRS UMR 5287, 33615, Pessac, France
| | - Vincent David
- Université de Bordeaux, CNRS UMR 5287, 33615, Pessac, France
| | | | - Catherine Belzung
- Université François Rabelais, Inserm U930, Parc Grandmont, 37200, Tours, France
| | - Nicole Mons
- Université de Bordeaux, CNRS UMR 5287, 33615, Pessac, France
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13
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Nordgren R. What to do with repeated measurements of a continuous response variable. J Mol Cell Cardiol 2019; 133:220-222. [PMID: 30853322 DOI: 10.1016/j.yjmcc.2019.03.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Revised: 02/26/2019] [Accepted: 03/02/2019] [Indexed: 10/27/2022]
Affiliation(s)
- Rachel Nordgren
- Institute for Health and Research Policy, School of Public Health, University of Illinois at Chicago, Chicago, IL, United States of America.
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14
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Ru Q, Xiong Q, Zhou M, Chen L, Tian X, Xiao H, Li C, Li Y. Withdrawal from chronic treatment with methamphetamine induces anxiety and depression-like behavior in mice. Psychiatry Res 2019; 271:476-483. [PMID: 30544074 DOI: 10.1016/j.psychres.2018.11.072] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Revised: 08/20/2018] [Accepted: 11/30/2018] [Indexed: 01/25/2023]
Abstract
Methamphetamine (METH) is an illicit psychostimulant that is widely abused. After producing extreme pleasure, METH abuse leads to negative emotional states during withdrawal in clinical survey. However, the mood behavioral consequences of withdrawal from chronic METH exposure in animal experiments and related mechanisms have not been clarified yet. The aim of this study was to investigate the anxiety and depression-like phenotype in mice induced by withdrawal from chronic METH treatment and the potential molecular mechanism. We found that withdrawal from chronic METH treatment increased the immobility time during the forced swimming test and decreased central activities in open field test, indicating increased anxiety and depression-like behavior. Additional experiments showed that expression of brain-derived neurotrophic factor (BDNF), phosphorylated tropomyosin receptor kinase B (p-TrkB), phosphorylated extracellular signal-related kinase 1/2 (p-ERK1/2) and phosphorylated cAMP-response element binding protein (p-CREB) were decreased in the hippocampus and prefrontal cortex of mice in METH group and the level of mitogen activated protein kinase phosphatase-1 (MKP-1) was increased. Combined, our data show that withdrawal from chronic METH exposure induces anxiety and depression-like behavior associated with aberrant changes of proteins in BDNF-ERK-CREB pathway, providing new evidence for the involvement of BDNF pathway in the negative emotional states induced by withdrawal from METH.
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Affiliation(s)
- Qin Ru
- Wuhan Institutes of Biomedical Sciences, Jianghan University, Wuhan 430056, China.
| | - Qi Xiong
- Wuhan Institutes of Biomedical Sciences, Jianghan University, Wuhan 430056, China
| | - Mei Zhou
- Wuhan Institutes of Biomedical Sciences, Jianghan University, Wuhan 430056, China
| | - Lin Chen
- Wuhan Institutes of Biomedical Sciences, Jianghan University, Wuhan 430056, China
| | - Xiang Tian
- Wuhan Institutes of Biomedical Sciences, Jianghan University, Wuhan 430056, China
| | - Huqiao Xiao
- Wan Ji Psychiatric Hospital, Wuhan 430051, China
| | - Chaoying Li
- Wuhan Institutes of Biomedical Sciences, Jianghan University, Wuhan 430056, China
| | - Yi Li
- Wuhan Mental Health Center, Wuhan 430022, China.
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15
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Rabat Y, Henkous N, Corio M, Nogues X, Beracochea D. Baclofen but Not Diazepam Alleviates Alcohol-Seeking Behavior and Hypothalamic-Pituitary-Adrenal Axis Dysfunction in Stressed Withdrawn Mice. Front Psychiatry 2019; 10:238. [PMID: 31105600 PMCID: PMC6492502 DOI: 10.3389/fpsyt.2019.00238] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Accepted: 03/28/2019] [Indexed: 12/28/2022] Open
Abstract
This study compares the impact of repeated injections of baclofen (an agonist of GABAB receptors) or diazepam (a benzodiazepine having an agonist action on GABAA receptors) given during the alcohol-withdrawal period on the stress-induced restoration of alcohol-seeking behavior and hypothalamic-pituitary-adrenal (HPA) axis dysfunction after a long (4 weeks) abstinence. Thus, C57BL/6 mice were submitted to a 6-month alcohol consumption [12% volume/volume (v/v)] and were progressively withdrawn to water before testing. Diazepam (Valium®, Roche) and baclofen (Baclofen®, Mylan) were administered intraperitoneally for 15 consecutive days (1 injection/day) during the withdrawal period at decreasing doses ranging from 1.0 mg/kg (Day 15) to 0.25 mg/kg (Day 1) for diazepam and from 1.5 mg/kg (Day 15) to 0.37 mg/kg (Day 1) for baclofen. Alcohol-seeking behavior was evaluated by alcohol-place preference in an odor recognition task. In the stress condition, mice received three electric footshocks 45 min before behavioral testing. Blood was sampled immediately after behavioral testing, and plasma corticosterone concentrations were measured by commercial enzyme immunoassay kits. Results showed that non-stressed withdrawn mice did not exhibit alcohol-place preference or alteration of plasma corticosterone concentrations relative to water controls. After stress, however, withdrawn mice exhibited a significant alcohol-place preference and higher circulating corticosterone concentrations as compared to stressed water controls. Interestingly, repeated administration during the withdrawal phase of baclofen but not diazepam suppressed both the alcohol-place preference and normalized corticosterone levels in stressed withdrawn animals. In conclusion, this study evidences that a pre-treatment with baclofen but not with diazepam during the withdrawal phase normalized, even after a long period of abstinence, the HPA axis response to stress, which contributes to the long-term preventing effects of this compound on alcohol-seeking behavior.
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Affiliation(s)
- Yolaine Rabat
- Université de Bordeaux, Institut de Neurosciences Cognitives et Intégratives d'Aquitaine (INCIA), CNRS UMR 5287, Pessac, France
| | - Nadia Henkous
- Université de Bordeaux, Institut de Neurosciences Cognitives et Intégratives d'Aquitaine (INCIA), CNRS UMR 5287, Pessac, France
| | - Marc Corio
- Université de Bordeaux, Institut de Neurosciences Cognitives et Intégratives d'Aquitaine (INCIA), CNRS UMR 5287, Pessac, France
| | | | - Daniel Beracochea
- Université de Bordeaux, Institut de Neurosciences Cognitives et Intégratives d'Aquitaine (INCIA), CNRS UMR 5287, Pessac, France
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16
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Béracochéa D, Mons N, David V. Targeting the Glucocorticoid Receptors During Alcohol Withdrawal to Reduce Protracted Neurocognitive Disorders. Front Psychiatry 2019; 10:580. [PMID: 31620025 PMCID: PMC6759466 DOI: 10.3389/fpsyt.2019.00580] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Accepted: 07/23/2019] [Indexed: 11/13/2022] Open
Abstract
Persistent regional glucocorticoid (GC) dysregulation in alcohol-withdrawn subjects emerges as a key factor responsible for protracted molecular and neural alterations associated with long-term cognitive dysfunction. Regional brain concentrations of corticosterone vary independently from plasma concentrations in alcohol-withdrawn subjects, which may account for the treatment of alcohol withdrawal-induced persistent pathology. Thus, from a pharmacological point of view, a main issue remains to determine the relative efficacy of compounds targeting the GC receptors to attenuate or suppress the long-lasting persistence of brain regional GC dysfunctions in abstinent alcoholics, as well as persistent changes of neural plasticity. Data from animal research show that acting directly on GC receptors during the withdrawal period, via selective antagonists, can significantly counteract the development and persistence of cognitive and neural plasticity disorders during protracted abstinence. A critical remaining issue is to better assess the relative long-term efficacy of GC antagonists and other compounds targeting the corticotropic axis activity such as gamma-aminobutyric acid A (GABAA) and GABAB agonists. Indeed, benzodiazepines (acting indirectly on GABAA receptors) and baclofen (agonist of the GABAB receptor) are the compounds most widely used to reduce alcohol dependence. Clinical and preclinical data suggest that baclofen exerts an effective and more powerful counteracting action on such persistent cognitive and endocrine dysfunctions as compared to diazepam, even though its potential negative effects on memory processes, particularly at high doses, should be better taken into account.
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Affiliation(s)
- Daniel Béracochéa
- Université de Bordeaux, Institut de Neurosciences Cognitives et Intégratives d'Aquitaine, Pessac, France.,CNRS UMR 5287, Institut de Neurosciences Cognitives et Intégratives d'Aquitaine, Pessac, France
| | - Nicole Mons
- Université de Bordeaux, Institut de Neurosciences Cognitives et Intégratives d'Aquitaine, Pessac, France.,CNRS UMR 5287, Institut de Neurosciences Cognitives et Intégratives d'Aquitaine, Pessac, France
| | - Vincent David
- Université de Bordeaux, Institut de Neurosciences Cognitives et Intégratives d'Aquitaine, Pessac, France.,CNRS UMR 5287, Institut de Neurosciences Cognitives et Intégratives d'Aquitaine, Pessac, France
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17
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D'Souza MS. Brain and Cognition for Addiction Medicine: From Prevention to Recovery Neural Substrates for Treatment of Psychostimulant-Induced Cognitive Deficits. Front Psychiatry 2019; 10:509. [PMID: 31396113 PMCID: PMC6667748 DOI: 10.3389/fpsyt.2019.00509] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Accepted: 06/28/2019] [Indexed: 01/10/2023] Open
Abstract
Addiction to psychostimulants like cocaine, methamphetamine, and nicotine poses a continuing medical and social challenge both in the United States and all over the world. Despite a desire to quit drug use, return to drug use after a period of abstinence is a common problem among individuals dependent on psychostimulants. Recovery for psychostimulant drug-dependent individuals is particularly challenging because psychostimulant drugs induce significant changes in brain regions associated with cognitive functions leading to cognitive deficits. These cognitive deficits include impairments in learning/memory, poor decision making, and impaired control of behavioral output. Importantly, these drug-induced cognitive deficits often impact adherence to addiction treatment programs and predispose abstinent addicts to drug use relapse. Additionally, these cognitive deficits impact effective social and professional rehabilitation of abstinent addicts. The goal of this paper is to review neural substrates based on animal studies that could be pharmacologically targeted to reverse psychostimulant-induced cognitive deficits such as impulsivity and impairment in learning and memory. Further, the review will discuss neural substrates that could be used to facilitate extinction learning and thus reduce emotional and behavioral responses to drug-associated cues. Moreover, the review will discuss some non-pharmacological approaches that could be used either alone or in combination with pharmacological compounds to treat the above-mentioned cognitive deficits. Psychostimulant addiction treatment, which includes treatment for cognitive deficits, will help promote abstinence and allow for better rehabilitation and integration of abstinent individuals into society.
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Affiliation(s)
- Manoranjan S D'Souza
- Department of Pharmaceutical and Biomedical Sciences, The Raabe College of Pharmacy, Ohio Northern University, Ada, OH, United States
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18
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Sun W, Li X, Tang C, An L. Acute Low Alcohol Disrupts Hippocampus-Striatum Neural Correlate of Learning Strategy by Inhibition of PKA/CREB Pathway in Rats. Front Pharmacol 2018; 9:1439. [PMID: 30574089 PMCID: PMC6291496 DOI: 10.3389/fphar.2018.01439] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Accepted: 11/22/2018] [Indexed: 11/30/2022] Open
Abstract
The hippocampus and striatum guide place-strategy and response-strategy learning, respectively, and they have dissociable roles in memory systems, which could compensate in case of temporary or permanent damage. Although acute alcohol (AA) treatment had been shown to have adverse effects on hippocampal function, whether it causes the functional compensation and the underlying mechanisms is unknown. In this study, rats treated with a low dose of AA avoided a hippocampus-dependent spatial strategy, instead preferring a striatum-dependent response strategy. Consistently, the learning-induced increase in hippocampal, but not striatal, pCREB was rendered less pronounced due to diminished activity of pPKA, but not pERK or pCaMKII. As rats approached the turn-decision area, Sp-cAMP, a PKA activator, was found to mitigate the inhibitory effect of AA on intra- and cross-structure synchronized neuronal oscillations, and rescue response-strategy bias and spatial learning deficits. Our study provides strong evidence of the critical link between neural couplings and strategy selection. Moreover, the PKA/CREB-signaling pathway is involved in the suppressive effect of AA on neural correlates of place-learning strategy. The novel important evidence provided here shows the functional couplings between the hippocampus and striatum in spatial learning processing and suggests possible avenues for therapeutic intervention.
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Affiliation(s)
- Wei Sun
- Medical College of Acupuncture-Moxibustion and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Xiaoliang Li
- Medical College of Acupuncture-Moxibustion and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Chunzhi Tang
- Medical College of Acupuncture-Moxibustion and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Lei An
- Medical College of Acupuncture-Moxibustion and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, China.,College of Acupuncture-Moxibustion and Orthopedics, Guiyang University of Chinese Medicine, Guiyang, China.,Department of Physiology, University of Saskatchewan, Saskatoon, SK, Canada
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19
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You C, Vandegrift BJ, Zhang H, Lasek AW, Pandey SC, Brodie MS. Histone Deacetylase Inhibitor Suberanilohydroxamic Acid Treatment Reverses Hyposensitivity to γ-Aminobutyric Acid in the Ventral Tegmental Area During Ethanol Withdrawal. Alcohol Clin Exp Res 2018; 42:2160-2171. [PMID: 30103280 PMCID: PMC6214766 DOI: 10.1111/acer.13870] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Accepted: 08/08/2018] [Indexed: 12/24/2022]
Abstract
Background The ventral tegmental area (VTA) is important for alcohol‐related reward and reinforcement. Mouse VTA neurons are hyposensitive to γ‐aminobutyric acid (GABA) during ethanol (EtOH) withdrawal, and GABA responsiveness is normalized by in vitro treatment with histone deacetylase inhibitors (HDACi). The present study examined the effect of a systemically administered HDACi, suberanilohydroxamic acid (SAHA) on GABA sensitivity, and related molecular changes in VTA neurons during withdrawal after chronic EtOH intake in rats. Methods Sprague Dawley male adult rats were fed with Lieber‐DeCarli diet (9% EtOH or control diet) for 16 days. Experimental groups included control diet‐fed and EtOH diet‐fed (0‐ or 24‐hour withdrawal) rats treated with either SAHA or vehicle injection. Single‐unit recordings were used to measure the response of VTA neurons to GABA. Immunohistochemistry was performed to examine levels of HDAC2, acetylated histone H3 lysine 9 (acH3K9), and GABAA receptor α1 and α5 subunits in the VTA; quantitative polymerase chain reaction was performed to examine the mRNA levels of HDAC2 and GABAA receptor subunits. Results VTA neurons from the withdrawal group exhibited GABA hyposensitivity. In vivo SAHA treatment 2 hours before sacrifice normalized the sensitivity of VTA neurons to GABA. EtOH withdrawal was associated with increased HDAC2 and decreased acH3K9 protein levels; SAHA treatment normalized acH3K9 levels. Interestingly, no significant change was observed in the mRNA levels of HDAC2. The mRNA levels, but not protein levels, of GABAA receptor α1 and α5 subunits were increased during withdrawal. Conclusions Withdrawal from chronic EtOH exposure results in a decrease in GABA‐mediated inhibition, and this GABA hyposensitivity is normalized by in vivo SAHA treatment. Disruption of signaling in the VTA produced by alteration of GABA neurotransmission could be 1 neuroadaptive physiological process leading to craving and relapse. These results suggest that HDACi pharmacotherapy with agents like SAHA might be an effective treatment for alcoholism.
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Affiliation(s)
- Chang You
- Department of Physiology and Biophysics , University of Illinois at Chicago, Chicago, Illinois.,Center for Alcohol Research in Epigenetics , Department of Psychiatry, University of Illinois at Chicago, Chicago, Illinois
| | - Bertha J Vandegrift
- Department of Physiology and Biophysics , University of Illinois at Chicago, Chicago, Illinois.,Center for Alcohol Research in Epigenetics , Department of Psychiatry, University of Illinois at Chicago, Chicago, Illinois
| | - Huaibo Zhang
- Center for Alcohol Research in Epigenetics , Department of Psychiatry, University of Illinois at Chicago, Chicago, Illinois.,Jesse Brown VA Medical Center , Chicago, Illinois
| | - Amy W Lasek
- Center for Alcohol Research in Epigenetics , Department of Psychiatry, University of Illinois at Chicago, Chicago, Illinois
| | - Subhash C Pandey
- Center for Alcohol Research in Epigenetics , Department of Psychiatry, University of Illinois at Chicago, Chicago, Illinois.,Jesse Brown VA Medical Center , Chicago, Illinois
| | - Mark S Brodie
- Department of Physiology and Biophysics , University of Illinois at Chicago, Chicago, Illinois.,Center for Alcohol Research in Epigenetics , Department of Psychiatry, University of Illinois at Chicago, Chicago, Illinois
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20
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Qiao X, Gai H, Su R, Deji C, Cui J, Lai J, Zhu Y. PI3K-AKT-GSK3β-CREB signaling pathway regulates anxiety-like behavior in rats following alcohol withdrawal. J Affect Disord 2018; 235:96-104. [PMID: 29655081 DOI: 10.1016/j.jad.2018.04.039] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Revised: 03/22/2018] [Accepted: 04/04/2018] [Indexed: 02/08/2023]
Abstract
BACKGROUND Alcohol abuse and anxiety disorders often occur concurrently, but their underlying cellular mechanisms remain unclear. Neuroadaptation within the medial prefrontal cortex (mPFC) have been implicated in the molecular mechanisms underlying alcohol drinking behavior and withdrawal. METHODS A chronic alcohol exposure rat model (35 consecutive days of 10% alcohol intake and 48 h of withdrawal) was established, then, wortmannin (0.5 µg/side) was injected bilaterally into the mPFC. The elevated plus maze (EPM) and open field test (OFT) were used to assess anxiety-like behavior. Western blot assays were used to assess protein levels. RESULTS We found that anxiety-like behavior peaked approximately 6 h after alcohol withdrawal. However, wortmannin greatly decreased alcohol intake and attenuated anxiety-like behavior in the alcohol exposure rats. Moreover, the PI3K-AKT-GSK3β signaling pathway was activated after alcohol withdrawal, and phosphorylation of the downstream cAMP response element-binding protein (CREB) was increased. Wortmannin uniformly reversed PI3K-AKT-GSK3β-CREB pathway phosphorylation. LIMITATIONS The downstream GSK3β activity was not intervened and a single dose level of wortmannin was used. CONCLUSION Our results suggest that activating the PI3K-AKT-GSK3β-CREB pathway in the mPFC is an important contributor to the molecular mechanisms underlying alcohol withdrawal. PI3K signaling pathway inhibitors are thus potential candidates for treating alcohol abuse.
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Affiliation(s)
- Xiaomeng Qiao
- College of Forensic Science, School of Medicine, Xi'an Jiaotong University, No. 76, Yanta West Road, Xi'an, Shaanxi 710061, China
| | - Haiyun Gai
- Xi'an Hospital of Traditional Chinese Medicine, Xi'an, Shaanxi 710021, China
| | - Rui Su
- College of Forensic Science, School of Medicine, Xi'an Jiaotong University, No. 76, Yanta West Road, Xi'an, Shaanxi 710061, China
| | - Cuola Deji
- College of Forensic Science, School of Medicine, Xi'an Jiaotong University, No. 76, Yanta West Road, Xi'an, Shaanxi 710061, China
| | - Jingjing Cui
- College of Forensic Science, School of Medicine, Xi'an Jiaotong University, No. 76, Yanta West Road, Xi'an, Shaanxi 710061, China
| | - Jianghua Lai
- College of Forensic Science, School of Medicine, Xi'an Jiaotong University, No. 76, Yanta West Road, Xi'an, Shaanxi 710061, China; Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi'an, Shaanxi 710061, China
| | - Yongsheng Zhu
- College of Forensic Science, School of Medicine, Xi'an Jiaotong University, No. 76, Yanta West Road, Xi'an, Shaanxi 710061, China.
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21
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Pradhan G, Melugin PR, Wu F, Fang HM, Weber R, Kroener S. Calcium chloride mimics the effects of acamprosate on cognitive deficits in chronic alcohol-exposed mice. Psychopharmacology (Berl) 2018; 235:2027-2040. [PMID: 29679288 PMCID: PMC10766324 DOI: 10.1007/s00213-018-4900-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Accepted: 04/09/2018] [Indexed: 12/22/2022]
Abstract
RATIONALE Acamprosate (calcium-bis N-acetylhomotaurinate) is the leading medication approved for the maintenance of abstinence, shown to reduce craving and relapse in animal models and human alcoholics. Acamprosate can improve executive functions that are impaired by chronic intermittent ethanol (CIE) exposure. Recent work has suggested that acamprosate's effects on relapse prevention are due to its calcium component, which raises the question whether its pro-cognitive effects are similarly mediated by calcium. OBJECTIVES This study examined the effects of acamprosate on alcohol-induced behavioral deficits and compared them with the effects of the sodium salt version of N-acetylhomotaurinate or calcium chloride, respectively. METHODS We exposed mice to alcohol via three cycles of CIE and measured changes in alcohol consumption in a limited-access paradigm. We then compared the effects of acamprosate and calcium chloride (applied subchronically for 3 days during withdrawal) in a battery of cognitive tasks that have been shown to be affected by chronic alcohol exposure. RESULTS CIE-treated animals showed deficits in attentional set-shifting and deficits in novel object recognition. Alcohol-treated animals showed no impairments in social novelty detection and interaction, or delayed spontaneous alternation. Both acamprosate and calcium chloride ameliorated alcohol-induced cognitive deficits to comparable extents. In contrast, the sodium salt version of N-acetylhomotaurinate did not reverse the cognitive deficits. CONCLUSIONS These results add evidence to the notion that acamprosate produces its anti-relapse effects through its calcium moiety. Our results also suggest that improved regulation of drug intake by acamprosate after withdrawal might at least in part be related to improved cognitive function.
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Affiliation(s)
- Grishma Pradhan
- School of Behavioral and Brain Sciences, The University of Texas at Dallas, 800 West Campbell Rd, BSB14, Richardson, TX, 75080, USA
| | - Patrick R Melugin
- School of Behavioral and Brain Sciences, The University of Texas at Dallas, 800 West Campbell Rd, BSB14, Richardson, TX, 75080, USA
| | - Fei Wu
- School of Behavioral and Brain Sciences, The University of Texas at Dallas, 800 West Campbell Rd, BSB14, Richardson, TX, 75080, USA
- Institute of Neurobiology, Jining Medical University, Jining, China
| | - Hannah M Fang
- School of Behavioral and Brain Sciences, The University of Texas at Dallas, 800 West Campbell Rd, BSB14, Richardson, TX, 75080, USA
| | - Rachel Weber
- School of Behavioral and Brain Sciences, The University of Texas at Dallas, 800 West Campbell Rd, BSB14, Richardson, TX, 75080, USA
| | - Sven Kroener
- School of Behavioral and Brain Sciences, The University of Texas at Dallas, 800 West Campbell Rd, BSB14, Richardson, TX, 75080, USA.
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22
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Ferguson LB, Harris RA, Mayfield RD. From gene networks to drugs: systems pharmacology approaches for AUD. Psychopharmacology (Berl) 2018; 235:1635-1662. [PMID: 29497781 PMCID: PMC6298603 DOI: 10.1007/s00213-018-4855-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Accepted: 02/06/2018] [Indexed: 12/29/2022]
Abstract
The alcohol research field has amassed an impressive number of gene expression datasets spanning key brain areas for addiction, species (humans as well as multiple animal models), and stages in the addiction cycle (binge/intoxication, withdrawal/negative effect, and preoccupation/anticipation). These data have improved our understanding of the molecular adaptations that eventually lead to dysregulation of brain function and the chronic, relapsing disorder of addiction. Identification of new medications to treat alcohol use disorder (AUD) will likely benefit from the integration of genetic, genomic, and behavioral information included in these important datasets. Systems pharmacology considers drug effects as the outcome of the complex network of interactions a drug has rather than a single drug-molecule interaction. Computational strategies based on this principle that integrate gene expression signatures of pharmaceuticals and disease states have shown promise for identifying treatments that ameliorate disease symptoms (called in silico gene mapping or connectivity mapping). In this review, we suggest that gene expression profiling for in silico mapping is critical to improve drug repurposing and discovery for AUD and other psychiatric illnesses. We highlight studies that successfully apply gene mapping computational approaches to identify or repurpose pharmaceutical treatments for psychiatric illnesses. Furthermore, we address important challenges that must be overcome to maximize the potential of these strategies to translate to the clinic and improve healthcare outcomes.
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Affiliation(s)
- Laura B Ferguson
- Waggoner Center for Alcohol and Addiction Research, University of Texas at Austin, 1 University Station A4800, Austin, TX, 78712, USA
- Intitute for Neuroscience, University of Texas at Austin, Austin, TX, 78712, USA
| | - R Adron Harris
- Waggoner Center for Alcohol and Addiction Research, University of Texas at Austin, 1 University Station A4800, Austin, TX, 78712, USA
| | - Roy Dayne Mayfield
- Waggoner Center for Alcohol and Addiction Research, University of Texas at Austin, 1 University Station A4800, Austin, TX, 78712, USA.
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23
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Savarese AM, Lasek AW. Transcriptional Regulators as Targets for Alcohol Pharmacotherapies. Handb Exp Pharmacol 2018; 248:505-533. [PMID: 29594350 PMCID: PMC6242703 DOI: 10.1007/164_2018_101] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Alcohol use disorder (AUD) is a chronic relapsing brain disease that currently afflicts over 15 million adults in the United States. Despite its prevalence, there are only three FDA-approved medications for AUD treatment, all of which show limited efficacy. Because of their ability to alter expression of a large number of genes, often with great cell-type and brain-region specificity, transcription factors and epigenetic modifiers serve as promising new targets for the development of AUD treatments aimed at the neural circuitry that underlies chronic alcohol abuse. In this chapter, we will discuss transcriptional regulators that can be targeted pharmacologically and have shown some efficacy in attenuating alcohol consumption when targeted. Specifically, the transcription factors cyclic AMP-responsive element binding protein (CREB), peroxisome proliferator-activated receptors (PPARs), nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB), and glucocorticoid receptor (GR), as well as the epigenetic enzymes, the DNA methyltransferases (DNMTs) and histone deacetylases (HDACs), will be discussed.
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Affiliation(s)
| | - Amy W. Lasek
- Department of Psychiatry, University of Illinois at Chicago,Corresponding author: 1601 West Taylor Street, MC 912, Chicago, IL 60612, Tel: (312) 355-1593,
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Bretin S, Krazem A, Henkous N, Froger-Colleaux C, Mocaer E, Louis C, Perdaems N, Marighetto A, Beracochea D. Synergistic enhancing-memory effect of donepezil and S 47445, an AMPA positive allosteric modulator, in middle-aged and aged mice. Psychopharmacology (Berl) 2018; 235:771-787. [PMID: 29167913 PMCID: PMC5847048 DOI: 10.1007/s00213-017-4792-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Accepted: 11/14/2017] [Indexed: 11/30/2022]
Abstract
Positive allosteric modulators of AMPA receptors (AMPA-PAMs) are described to facilitate cognitive processes in different memory-based models. Among them, S 47445 is a novel potent and selective AMPA-PAM. In order to assess its efficacy after repeated administration, S 47445 effect was evaluated in two aging-induced memory dysfunction tasks in old mice, one short-term working memory model evaluated in a radial maze task and one assessing contextual memory performance. S 47445 was shown to improve cognition in both models sensitive to aging. In fact, administration of S 47445 at 0.3 mg/kg (s.c.) reversed the age-induced deficits of the working memory model whatever the retention interval. Moreover, in the contextual task, S 47445 also reversed the age-induced deficit at all tested doses (from 0.03 to 0.3 mg/kg, p.o.). Since donepezil, an acetylcholinesterase inhibitor, induces only moderate symptomatic effects on memory in Alzheimer's disease patients, an alternative strategy for treatment of cognitive symptoms could be to act simultaneously on both glutamatergic AMPA receptors and cholinergic pathways by combining pharmacological treatments. The present study further examined such effects by assessing combinations of S 47445 and donepezil given orally during 9 days in aged C57/Bl6J mice using contextual memory task (CSD) and the working memory model of serial alternation task (AT). Interestingly, a significant synergistic memory-enhancing effect was observed with the combination of donepezil at 0.1 mg/kg with S 47445 at 0.1 mg/kg p.o. in the CSD or with S 47445 at 0.1 and 0.3 mg/kg in AT in comparison to compounds given alone and without any pharmacokinetic interaction.
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Affiliation(s)
- S Bretin
- Institut de Recherches Internationales Servier, Pôle d'Innovation Thérapeutique Neuropsychiatrie, Suresnes, France
| | - A Krazem
- Institut de Neurosciences Cognitives et Intégratives d'Aquitaine (INCIA), Université de Bordeaux, UMR CNRS 5287, Allée Geoffroy Saint-Hilaire, Bat B2, 33613, Pessac, France
| | - N Henkous
- Institut de Neurosciences Cognitives et Intégratives d'Aquitaine (INCIA), Université de Bordeaux, UMR CNRS 5287, Allée Geoffroy Saint-Hilaire, Bat B2, 33613, Pessac, France
| | - C Froger-Colleaux
- Froger-Colleaux C, Porsolt Research Laboratory, Z.A de Glatiné, 53940, Le Genest-Saint-Isle, France
| | - E Mocaer
- Institut de Recherches Internationales Servier, Pôle d'Innovation Thérapeutique Neuropsychiatrie, Suresnes, France
| | - C Louis
- Institut de Recherches Servier, Pôle d'Innovation Thérapeutique Neuropsychiatrie, Croissy-Sur-Seine, France
| | - N Perdaems
- Pôle Expertise en Pharmacocinétique, Orléans, France
| | - A Marighetto
- INSERM, Neurocentre Magendie, Physiopathologie de la plasticité neuronale, U1215, 33077, Bordeaux, France
| | - D Beracochea
- Institut de Neurosciences Cognitives et Intégratives d'Aquitaine (INCIA), Université de Bordeaux, UMR CNRS 5287, Allée Geoffroy Saint-Hilaire, Bat B2, 33613, Pessac, France.
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Dominguez G, Belzung C, Pierard C, David V, Henkous N, Decorte L, Mons N, Beracochea D. Alcohol withdrawal induces long-lasting spatial working memory impairments: relationship with changes in corticosterone response in the prefrontal cortex. Addict Biol 2017; 22:898-910. [PMID: 26860616 DOI: 10.1111/adb.12371] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Revised: 12/16/2015] [Accepted: 01/11/2016] [Indexed: 12/22/2022]
Abstract
This study intends to determine whether long-lasting glucocorticoids (GCs) dysregulation in the prefrontal cortex (PFC) or the dorsal hippocampus (dHPC) play a causal role in the maintenance of working memory (WM) deficits observed after alcohol withdrawal. Here, we report that C57/BL6 male mice submitted to 6 months alcohol consumption (12 percent v/v) followed by 1 (1W) or 6 weeks (6W) withdrawal periods exhibit WM deficits in a spatial alternation task and an exaggerated corticosterone rise during and after memory testing in the PFC but not the dHPC. In contrast, emotional reactivity evaluated in a plus-maze is altered only in the 1W group. No behavioral alterations are observed in mice still drinking alcohol. To determine the causal role of corticosterone in the withdrawal-associated long-lasting WM deficits, we further show that a single intraperitoneal injection injection of metyrapone (an inhibitor of corticosterone synthesis) 30 minutes before testing, prevents withdrawal-associated WM deficits and reestablishes PFC activity, as assessed by increased phosphorylated C-AMP Response Element-binding protein (CREB) immunoreactivity in withdrawn mice. Finally, we show that intra-PFC blockade of mineralocorticoid receptors by infusion of spironolactone and, to a lesser extent, of GCs receptors by injection of mifepristone reverses the WM deficits induced by withdrawal whereas the same injections into the dHPC do not. Overall, our study evidences that long-lasting GCs dysfunction selectively in the PFC is responsible for the emergence and maintenance of WM impairments after withdrawal and that blocking prefrontal mineralocorticoid receptors receptors restores WM in withdrawn animals.
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Affiliation(s)
- Gaelle Dominguez
- Université de Bordeaux, INCIA CNRS UMR 5287; France
- Université François Rabelais, Inserm U930; France
| | | | | | | | | | | | - Nicole Mons
- Université de Bordeaux, INCIA CNRS UMR 5287; France
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Pierard C, Dorey R, Henkous N, Mons N, Béracochéa D. Different implications of the dorsal and ventral hippocampus on contextual memory retrieval after stress. Hippocampus 2017; 27:999-1015. [PMID: 28597498 DOI: 10.1002/hipo.22748] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Revised: 05/24/2017] [Accepted: 05/26/2017] [Indexed: 12/26/2022]
Abstract
This study assessed the relative contributions of dorsal (dHPC) and ventral (vHPC) hippocampus regions in mediating the rapid effects of an acute stress on contextual memory retrieval. Indeed, we previously showed that an acute stress (3 electric footschocks; 0.9 mA each) delivered 15 min before the 24 h-test inversed the memory retrieval pattern in a contextual discrimination task. Specifically, mice learned in a four-hole board two successive discriminations (D1 and D2) varying by the color and texture of the floor. Twenty-four hours later, nonstressed animals remembered accurately D1 but not D2 whereas stressed mice showed an opposite memory retrieval pattern, D2 being more accurately remembered than D1. We showed here that, at the time of memory testing in that task, stressed animals exhibited no significant changes neither in pCREB activity nor in the time-course evolution of corticosterone into the vHPC; in contrast, a significant decrease in pCREB activity and a significant increase in corticosterone were observed in the dHPC as compared to nonstressed mice. Moreover, local infusion of the anesthetic lidocaine into the vHPC 15 min before the onset of the stressor did not modify the memory retrieval pattern in nonstress and stress conditions whereas lidocaine infusion into the dHPC induced in nonstressed mice an memory retrieval pattern similar to that observed in stressed animals. The overall set of data shows that memory retrieval in nonstress condition involved primarily the dHPC and that the inversion of memory retrieval pattern after stress is linked to a dHPC but not vHPC dysfunction.
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Affiliation(s)
- C Pierard
- IRBA, 91223 Brétigny sur Orge-Cedex, France
| | - R Dorey
- IRBA, 91223 Brétigny sur Orge-Cedex, France
| | - N Henkous
- Université de Bordeaux, CNRS UMR 5287, Pessac, 33615, France
| | - N Mons
- Université de Bordeaux, CNRS UMR 5287, Pessac, 33615, France
| | - D Béracochéa
- Université de Bordeaux, CNRS UMR 5287, Pessac, 33615, France
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Frischknecht U, Hermann D, Tunc-Skarka N, Wang GY, Sack M, van Eijk J, Demirakca T, Falfan-Melgoza C, Krumm B, Dieter S, Spanagel R, Kiefer F, Mann KF, Sommer WH, Ende G, Weber-Fahr W. Negative Association Between MR-Spectroscopic Glutamate Markers and Gray Matter Volume After Alcohol Withdrawal in the Hippocampus: A Translational Study in Humans and Rats. Alcohol Clin Exp Res 2017; 41:323-333. [DOI: 10.1111/acer.13308] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Accepted: 11/21/2016] [Indexed: 01/03/2023]
Affiliation(s)
- Ulrich Frischknecht
- Department of Addictive Behavior and Addiction Medicine ; Central Institute for Mental Health; Medical Faculty Mannheim, Heidelberg University; Mannheim Germany
| | - Derik Hermann
- Department of Addictive Behavior and Addiction Medicine ; Central Institute for Mental Health; Medical Faculty Mannheim, Heidelberg University; Mannheim Germany
| | - Nuran Tunc-Skarka
- Department of Neuroimaging ; Central Institute for Mental Health; Medical Faculty Mannheim, Heidelberg University; Mannheim Germany
| | - Guo-Ying Wang
- Department of Neuroimaging ; Central Institute for Mental Health; Medical Faculty Mannheim, Heidelberg University; Mannheim Germany
| | - Markus Sack
- Department of Neuroimaging ; Central Institute for Mental Health; Medical Faculty Mannheim, Heidelberg University; Mannheim Germany
| | - Julia van Eijk
- Department of Neuroimaging ; Central Institute for Mental Health; Medical Faculty Mannheim, Heidelberg University; Mannheim Germany
| | - Traute Demirakca
- Department of Neuroimaging ; Central Institute for Mental Health; Medical Faculty Mannheim, Heidelberg University; Mannheim Germany
| | - Claudia Falfan-Melgoza
- Research Group for Translational Imaging ; Central Institute for Mental Health; Medical Faculty Mannheim, Heidelberg University; Mannheim Germany
| | - Bertram Krumm
- Department of Biostatistics ; Central Institute for Mental Health; Medical Faculty Mannheim, Heidelberg University; Mannheim Germany
| | - Sandra Dieter
- Institute of Psychopharmacology ; Central Institute for Mental Health; Medical Faculty Mannheim, Heidelberg University; Mannheim Germany
| | - Rainer Spanagel
- Institute of Psychopharmacology ; Central Institute for Mental Health; Medical Faculty Mannheim, Heidelberg University; Mannheim Germany
| | - Falk Kiefer
- Department of Addictive Behavior and Addiction Medicine ; Central Institute for Mental Health; Medical Faculty Mannheim, Heidelberg University; Mannheim Germany
| | - Karl F. Mann
- Department of Addictive Behavior and Addiction Medicine ; Central Institute for Mental Health; Medical Faculty Mannheim, Heidelberg University; Mannheim Germany
| | - Wolfgang H. Sommer
- Department of Addictive Behavior and Addiction Medicine ; Central Institute for Mental Health; Medical Faculty Mannheim, Heidelberg University; Mannheim Germany
- Institute of Psychopharmacology ; Central Institute for Mental Health; Medical Faculty Mannheim, Heidelberg University; Mannheim Germany
| | - Gabriele Ende
- Department of Neuroimaging ; Central Institute for Mental Health; Medical Faculty Mannheim, Heidelberg University; Mannheim Germany
| | - Wolfgang Weber-Fahr
- Research Group for Translational Imaging ; Central Institute for Mental Health; Medical Faculty Mannheim, Heidelberg University; Mannheim Germany
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Liu Y, Ni C, Li Z, Yang N, Zhou Y, Rong X, Qian M, Chui D, Guo X. Prophylactic Melatonin Attenuates Isoflurane‐Induced Cognitive Impairment in Aged Rats through Hippocampal Melatonin Receptor 2 – cAMP Response Element Binding Signalling. Basic Clin Pharmacol Toxicol 2017; 120:219-226. [PMID: 27515785 DOI: 10.1111/bcpt.12652] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Accepted: 08/03/2016] [Indexed: 11/29/2022]
Affiliation(s)
- Yajie Liu
- Department of Anesthesiology Peking University Third Hospital Beijing China
| | - Cheng Ni
- Department of Anesthesiology Peking University Third Hospital Beijing China
| | - Zhengqian Li
- Department of Anesthesiology Peking University Third Hospital Beijing China
| | - Ning Yang
- Department of Anesthesiology Peking University Third Hospital Beijing China
| | - Yang Zhou
- Department of Anesthesiology Peking University Third Hospital Beijing China
| | - Xiaoying Rong
- Department of Anesthesiology Peking University Third Hospital Beijing China
| | - Min Qian
- Department of Anesthesiology Peking University Third Hospital Beijing China
| | - Dehua Chui
- Neuroscience Research Institute & Department of Neurobiology Peking University Beijing China
| | - Xiangyang Guo
- Department of Anesthesiology Peking University Third Hospital Beijing China
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Sors A, Krazem A, Kehr J, Yoshitake T, Dominguez G, Henkous N, Letondor C, Mocaer E, Béracochéa DJ. The Synergistic Enhancing-Memory Effect of Donepezil and S 38093 (a Histamine H 3 Antagonist) Is Mediated by Increased Neural Activity in the Septo-hippocampal Circuitry in Middle-Aged Mice. Front Pharmacol 2016; 7:492. [PMID: 28066242 PMCID: PMC5177663 DOI: 10.3389/fphar.2016.00492] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2016] [Accepted: 12/01/2016] [Indexed: 01/01/2023] Open
Abstract
Donepezil, an acetylcholinesterase inhibitor, induces only moderate symptomatic effects on memory in Alzheimer’s disease patients. An alternative strategy for treatment of cognitive symptoms could be to act simultaneously on both histaminergic and cholinergic pathways, to create a synergistic effect. To that aim, 14 month old C57/Bl6 mice were administered per oesophagy during nine consecutive days with Donepezil (at 0.1 and 0.3 mg/kg) and S 38093 (at 0.1, 0.3, and 1.0 mg/kg), a H3 histaminergic antagonist developed by Servier, alone or in combination and tested for memory in a contextual memory task that modelized the age-induced memory dysfunction. The present study shows that the combination of Donepezil and S 38093 induced a dose-dependent synergistic memory-enhancing effect in middle-aged mice with a statistically higher size of effect never obtained with compounds alone and without any pharmacokinetic interaction between both compounds. We demonstrated that the memory-enhancing effect of the S 38093 and Donepezil combination is mediated by its action on the septo-hippocampal circuitry, since it canceled out the reduction of CREB phosphorylation (pCREB) observed in these brain areas in vehicle-treated middle-aged animals. Overall, the effects of drug combinations on pCREB in the hippocampus indicate that the synergistic promnesiant effects of the combination on memory performance in middle-aged mice stem primarily from an enhancement of neural activity in the septo-hippocampal system.
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Affiliation(s)
- Aurore Sors
- Pôle d'Innovation Thérapeutique Neuropsychiatrie Servier Suresnes, France
| | - Ali Krazem
- CNRS 5287, Institut de Neurosciences Cognitives et Intégratives d'Aquitaine, Université de Bordeaux UMR, Pessac, France
| | - Jan Kehr
- Pronexus Analytical AB Bromma, Sweden
| | - Takashi Yoshitake
- Section of Pharmacological Neurochemistry, Department of Physiology and Pharmacology, Karolinska Institute Stockholm, Sweden
| | - Gaelle Dominguez
- CNRS 5287, Institut de Neurosciences Cognitives et Intégratives d'Aquitaine, Université de Bordeaux UMR, Pessac, France
| | - Nadia Henkous
- CNRS 5287, Institut de Neurosciences Cognitives et Intégratives d'Aquitaine, Université de Bordeaux UMR, Pessac, France
| | - Claire Letondor
- Pôle d'Innovation Thérapeutique Neuropsychiatrie Servier Suresnes, France
| | - Elisabeth Mocaer
- Pôle d'Innovation Thérapeutique Neuropsychiatrie Servier Suresnes, France
| | - Daniel J Béracochéa
- CNRS 5287, Institut de Neurosciences Cognitives et Intégratives d'Aquitaine, Université de Bordeaux UMR, Pessac, France
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McGinn MA, Paulsen RI, Itoga CA, Farooq MA, Reppel JE, Edwards KN, Whitaker AM, Gilpin NW, Edwards S. Withdrawal from Chronic Nicotine Exposure Produces Region-Specific Tolerance to Alcohol-Stimulated GluA1 Phosphorylation. Alcohol Clin Exp Res 2016; 40:2537-2547. [PMID: 27796078 DOI: 10.1111/acer.13258] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2016] [Accepted: 09/26/2016] [Indexed: 02/04/2023]
Abstract
BACKGROUND Nicotine use increases alcohol drinking, suggesting that the combination of these drugs may produce synergistic effects in activating reward circuitry. Alternatively, use of either of these drugs may facilitate the development of cross-tolerance to the other to promote intake escalation. METHODS In this study, adult male Wistar rats were chronically exposed to room air or chronic, intermittent nicotine vapor, which has been shown to produce symptoms of nicotine dependence as evidenced by elevated nicotine self-administration and a host of somatic and motivational withdrawal symptoms. We examined regional neuroadaptations in nicotine-experienced versus nonexperienced animals, focusing on changes in phosphorylation of the AMPA glutamate channel subunit GluA1 in reward-related brain regions as excitatory neuroadaptations are heavily implicated in both alcohol and nicotine addiction. RESULTS During withdrawal, nicotine exposure and alcohol challenge (1 g/kg) interactively produced neuroadaptations in GluA1 phosphorylation in a brain region-dependent manner. Alcohol robustly increased protein kinase A-mediated phosphorylation of GluA1 at serine 845 in multiple regions. However, this neuroadaptation was largely absent in 3 areas (dorsomedial prefrontal cortex, dorsal striatum, and central amygdala) in nicotine-experienced animals. This interactive effect suggests a molecular tolerance to alcohol-stimulated phosphorylation of GluA1 in the context of nicotine dependence. CONCLUSIONS Nicotine may modify the rewarding or reinforcing effects of alcohol by altering glutamate signaling in a region-specific manner, thereby leading to increased drinking in heavy smokers.
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Affiliation(s)
- M Adrienne McGinn
- Department of Physiology, Alcohol & Drug Abuse Center of Excellence, Neuroscience Center of Excellence, Louisiana State University Health Sciences Center, New Orleans, Louisiana
| | - Rod I Paulsen
- Department of Physiology, Alcohol & Drug Abuse Center of Excellence, Neuroscience Center of Excellence, Louisiana State University Health Sciences Center, New Orleans, Louisiana
| | - Christy A Itoga
- Department of Physiology, Alcohol & Drug Abuse Center of Excellence, Neuroscience Center of Excellence, Louisiana State University Health Sciences Center, New Orleans, Louisiana
| | - Muhammad A Farooq
- Department of Physiology, Alcohol & Drug Abuse Center of Excellence, Neuroscience Center of Excellence, Louisiana State University Health Sciences Center, New Orleans, Louisiana
| | - Jonathan E Reppel
- Department of Physiology, Alcohol & Drug Abuse Center of Excellence, Neuroscience Center of Excellence, Louisiana State University Health Sciences Center, New Orleans, Louisiana
| | - Kimberly N Edwards
- Department of Physiology, Alcohol & Drug Abuse Center of Excellence, Neuroscience Center of Excellence, Louisiana State University Health Sciences Center, New Orleans, Louisiana
| | - Annie M Whitaker
- Department of Physiology, Alcohol & Drug Abuse Center of Excellence, Neuroscience Center of Excellence, Louisiana State University Health Sciences Center, New Orleans, Louisiana
| | - Nicholas W Gilpin
- Department of Physiology, Alcohol & Drug Abuse Center of Excellence, Neuroscience Center of Excellence, Louisiana State University Health Sciences Center, New Orleans, Louisiana
| | - Scott Edwards
- Department of Physiology, Alcohol & Drug Abuse Center of Excellence, Neuroscience Center of Excellence, Louisiana State University Health Sciences Center, New Orleans, Louisiana
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Faucher P, Mons N, Micheau J, Louis C, Beracochea DJ. Hippocampal Injections of Oligomeric Amyloid β-peptide (1-42) Induce Selective Working Memory Deficits and Long-lasting Alterations of ERK Signaling Pathway. Front Aging Neurosci 2016; 7:245. [PMID: 26793098 PMCID: PMC4707555 DOI: 10.3389/fnagi.2015.00245] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Accepted: 12/14/2015] [Indexed: 12/24/2022] Open
Abstract
Increasing evidence suggests that abnormal brain accumulation of soluble rather than aggregated amyloid-β1-42 oligomers (Aβo(1-42)) plays a causal role in Alzheimer's disease (AD). However, as yet, animal's models of AD based on oligomeric amyloid-β1-42 injections in the brain have not investigated their long-lasting impacts on molecular and cognitive functions. In addition, the injections have been most often performed in ventricles, but not in the hippocampus, in spite of the fact that the hippocampus is importantly involved in memory processes and is strongly and precociously affected during the early stages of AD. Thus, in the present study, we investigated the long-lasting impacts of intra-hippocampal injections of oligomeric forms of Aβo(1-42) on working and spatial memory and on the related activation of ERK1/2. Indeed, the extracellular signal-regulated kinase (ERK) which is involved in memory function had been found to be activated by amyloid peptides. We found that repeated bilateral injections (1injection/day over 4 successive days) of oligomeric forms of Aβo(1-42) into the dorsal hippocampus lead to long-lasting impairments in two working memory tasks, these deficits being observed 7 days after the last injection, while spatial memory remained unaffected. Moreover, the working memory deficits were correlated with sustained impairments of ERK1/2 activation in the medial prefrontal cortex (mPFC) and the septum, two brain areas tightly connected with the hippocampus and involved in working memory. Thus, our study is first to evidence that sub-chronic injections of oligomeric forms of Aβo(1-42) into the dorsal hippocampus produces the main sign of cognitive impairments corresponding to the early stages of AD, via long-lasting alterations of an ERK/MAPK pathway in an interconnected brain networks.
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Affiliation(s)
- Pierre Faucher
- Institut de Neurosciences Cognitives et Intégratives d'Aquitaine, Université de Bordeaux, CNRS, UMR 5287 Pessac, France
| | - Nicole Mons
- Institut de Neurosciences Cognitives et Intégratives d'Aquitaine, Université de Bordeaux, CNRS, UMR 5287 Pessac, France
| | - Jacques Micheau
- Institut de Neurosciences Cognitives et Intégratives d'Aquitaine, Université de Bordeaux, CNRS, UMR 5287 Pessac, France
| | - Caroline Louis
- Institut de Recherches Servier Croissy sur Seine, France
| | - Daniel J Beracochea
- Institut de Neurosciences Cognitives et Intégratives d'Aquitaine, Université de Bordeaux, CNRS, UMR 5287 Pessac, France
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32
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Mons N, Beracochea D. Behavioral Neuroadaptation to Alcohol: From Glucocorticoids to Histone Acetylation. Front Psychiatry 2016; 7:165. [PMID: 27766083 PMCID: PMC5052254 DOI: 10.3389/fpsyt.2016.00165] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2016] [Accepted: 09/21/2016] [Indexed: 01/21/2023] Open
Abstract
A prime mechanism that contributes to the development and maintenance of alcoholism is the dysregulation of the hypothalamic-pituitary-adrenal axis activity and the release of glucocorticoids (cortisol in humans and primates, corticosterone in rodents) from the adrenal glands. In the brain, sustained, local elevation of glucocorticoid concentration even long after cessation of chronic alcohol consumption compromises functional integrity of a circuit, including the prefrontal cortex (PFC), the hippocampus (HPC), and the amygdala (AMG). These structures are implicated in learning and memory processes as well as in orchestrating neuroadaptive responses to stress and anxiety responses. Thus, potentiation of anxiety-related neuroadaptation by alcohol is characterized by an abnormally AMG hyperactivity coupled with a hypofunction of the PFC and the HPC. This review describes research on molecular and epigenetic mechanisms by which alcohol causes distinct region-specific adaptive changes in gene expression patterns and ultimately leads to a variety of cognitive and behavioral impairments on prefrontal- and hippocampal-based tasks. Alcohol-induced neuroadaptations involve the dysregulation of numerous signaling cascades, leading to long-term changes in transcriptional profiles of genes, through the actions of transcription factors such as [cAMP response element-binding protein (CREB)] and chromatin remodeling due to posttranslational modifications of histone proteins. We describe the role of prefrontal-HPC-AMG circuit in mediating the effects of acute and chronic alcohol on learning and memory, and region-specific molecular and epigenetic mechanisms involved in this process. This review first discusses the importance of brain region-specific dysregulation of glucocorticoid concentration in the development of alcohol dependence and describes how persistently increased glucocorticoid levels in PFC may be involved in mediating working memory impairments and neuroadaptive changes during withdrawal from chronic alcohol intake. It then highlights the role of cAMP-PKA-CREB signaling cascade and histone acetylation within the PFC and limbic structures in alcohol-induced anxiety and behavioral impairments, and how an understanding of functional alterations of these pathways might lead to better treatments for neuropsychiatric disorders.
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Affiliation(s)
- Nicole Mons
- CNRS UMR 5287, Institut des Neurosciences cognitives et intégratives d'Aquitaine, Nouvelle Université de Bordeaux , Pessac , France
| | - Daniel Beracochea
- CNRS UMR 5287, Institut des Neurosciences cognitives et intégratives d'Aquitaine, Nouvelle Université de Bordeaux , Pessac , France
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Radwan B, Liu H, Chaudhury D. Regulation and Modulation of Depression-Related Behaviours: Role of Dopaminergic Neurons. DOPAMINE AND SLEEP 2016:147-190. [DOI: 10.1007/978-3-319-46437-4_8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/19/2023]
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34
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Staples MC, Mandyam CD. Thinking after Drinking: Impaired Hippocampal-Dependent Cognition in Human Alcoholics and Animal Models of Alcohol Dependence. Front Psychiatry 2016; 7:162. [PMID: 27746746 PMCID: PMC5043052 DOI: 10.3389/fpsyt.2016.00162] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Accepted: 09/13/2016] [Indexed: 12/05/2022] Open
Abstract
Alcohol use disorder currently affects approximately 18 million Americans, with at least half of these individuals having significant cognitive impairments subsequent to their chronic alcohol use. This is most widely apparent as frontal cortex-dependent cognitive dysfunction, where executive function and decision-making are severely compromised, as well as hippocampus-dependent cognitive dysfunction, where contextual and temporal reasoning are negatively impacted. This review discusses the relevant clinical literature to support the theory that cognitive recovery in tasks dependent on the prefrontal cortex and hippocampus is temporally different across extended periods of abstinence from alcohol. Additional studies from preclinical models are discussed to support clinical findings. Finally, the unique cellular composition of the hippocampus and cognitive impairment dependent on the hippocampus is highlighted in the context of alcohol dependence.
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Affiliation(s)
- Miranda C Staples
- Committee on the Neurobiology of Addictive Disorders, The Scripps Research Institute , La Jolla, CA , USA
| | - Chitra D Mandyam
- Committee on the Neurobiology of Addictive Disorders, The Scripps Research Institute , La Jolla, CA , USA
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