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Zhang Z, Xiao T, Hall MR, Crodian JS, Alford AK, Kimbrough A, Shi R. Temporal differential effects of post-injury alcohol consumption in a mouse model of blast-induced traumatic brain injury. Neuroscience 2024:S0306-4522(24)00506-2. [PMID: 39369945 DOI: 10.1016/j.neuroscience.2024.10.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2024] [Revised: 09/22/2024] [Accepted: 10/01/2024] [Indexed: 10/08/2024]
Abstract
Traumatic brain injury is a prevalent condition that affects millions worldwide with no clear understanding or effective therapeutic management available. Military soldiers have a high risk of exposure to blast-induced traumatic brain injury (bTBI). Furthermore, alcohol drinking is common in this population, and studies have shown that post-TBI alcohol exposure can result in memory loss. Hence, it is possible that alcohol could contribute to the overall pathological outcome of brain trauma. However, such a possibility has not been explored in detail. Here, we combined a mild bTBI (mbTBI) model with the drinking-in-the-dark (DID) paradigm to investigate the pathological synergy between mbTBI and alcohol consumption by examining brain oxidative stress levels and behavioral alterations in mice. The results revealed the anxiolytic and short-term memory improvement effects of post-trauma alcohol drinking examined at an early timepoint post mbTBI. However, extended alcohol drinking for up to three weeks post mbTBI impaired long-term memory and was accompanied by intensified oxidative stress in brain regions associated with memory and anxiety. These findings, as well as those from previous in vitro TBI/alcohol studies, suggest a pathological synergy of physical force and post-impact alcohol exposure. This knowledge could potentially aid in establishing guidelines for TBI victims to avoid further injury to their brains as well as to help maximize their recovery following TBI.
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Affiliation(s)
- Zaiyang Zhang
- Department of Basic Medical Sciences, College of Veterinary Medicine Purdue University, West Lafayette, IN, United States; Center for Paralysis Research, Purdue University, West Lafayette, IN, United States
| | - Tiange Xiao
- Department of Basic Medical Sciences, College of Veterinary Medicine Purdue University, West Lafayette, IN, United States
| | - Mekyna R Hall
- Department of Basic Medical Sciences, College of Veterinary Medicine Purdue University, West Lafayette, IN, United States; Center for Paralysis Research, Purdue University, West Lafayette, IN, United States
| | - Jennifer S Crodian
- Department of Basic Medical Sciences, College of Veterinary Medicine Purdue University, West Lafayette, IN, United States; Center for Paralysis Research, Purdue University, West Lafayette, IN, United States
| | - Anna K Alford
- Department of Basic Medical Sciences, College of Veterinary Medicine Purdue University, West Lafayette, IN, United States; Center for Paralysis Research, Purdue University, West Lafayette, IN, United States; Weldon School of Biomedical Engineering, College of Engineering, Purdue University, West Lafayette, IN, United States
| | - Adam Kimbrough
- Department of Basic Medical Sciences, College of Veterinary Medicine Purdue University, West Lafayette, IN, United States; Weldon School of Biomedical Engineering, College of Engineering, Purdue University, West Lafayette, IN, United States; The Purdue Institute of Inflammation, Immunology and Infectious Disease, Purdue University, West Lafayette, IN, United States.
| | - Riyi Shi
- Department of Basic Medical Sciences, College of Veterinary Medicine Purdue University, West Lafayette, IN, United States; Center for Paralysis Research, Purdue University, West Lafayette, IN, United States; Weldon School of Biomedical Engineering, College of Engineering, Purdue University, West Lafayette, IN, United States; Purdue Institute for Integrative Neuroscience, Purdue University, West Lafayette, IN, United States.
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2
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Biggio F, Talani G, Asuni GP, Bassareo V, Boi M, Dazzi L, Pisu MG, Porcu P, Sanna E, Sanna F, Serra M, Serra MP, Siddi C, Acquas E, Follesa P, Quartu M. Mixing energy drinks and alcohol during adolescence impairs brain function: A study of rat hippocampal plasticity. Neuropharmacology 2024; 254:109993. [PMID: 38735368 DOI: 10.1016/j.neuropharm.2024.109993] [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: 01/14/2024] [Revised: 04/20/2024] [Accepted: 05/09/2024] [Indexed: 05/14/2024]
Abstract
In the last decades, the consumption of energy drinks has risen dramatically, especially among young people, adolescents and athletes, driven by the constant search for ergogenic effects, such as the increase in physical and cognitive performance. In parallel, mixed consumption of energy drinks and ethanol, under a binge drinking modality, under a binge drinking modality, has similarly grown among adolescents. However, little is known whether the combined consumption of these drinks, during adolescence, may have long-term effects on central function, raising the question of the risks of this habit on brain maturation. Our study was designed to evaluate, by behavioral, electrophysiological and molecular approaches, the long-term effects on hippocampal plasticity of ethanol (EtOH), energy drinks (EDs), or alcohol mixed with energy drinks (AMED) in a rat model of binge-like drinking adolescent administration. The results show that AMED binge-like administration produces adaptive hippocampal changes at the molecular level, associated with electrophysiological and behavioral alterations, which develop during the adolescence and are still detectable in adult animals. Overall, the study indicates that binge-like drinking AMED adolescent exposure represents a habit that may affect permanently hippocampal plasticity.
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Affiliation(s)
- Francesca Biggio
- Department of Life and Environmental Sciences, University of Cagliari, Cittadella Universitaria di Monserrato, 09042, Monserrato, Cagliari, Italy
| | - Giuseppe Talani
- Institute of Neurosciences, National Research Council (C.N.R.), Cittadella Universitaria, 09042, Monserrato, Cagliari, Italy
| | - Gino Paolo Asuni
- Department of Life and Environmental Sciences, University of Cagliari, Cittadella Universitaria di Monserrato, 09042, Monserrato, Cagliari, Italy
| | - Valentina Bassareo
- Department of Biomedical Sciences, University of Cagliari, Cittadella Universitaria di Monserrato, 09042, Monserrato, Cagliari, Italy
| | - Marianna Boi
- Department of Biomedical Sciences, University of Cagliari, Cittadella Universitaria di Monserrato, 09042, Monserrato, Cagliari, Italy
| | - Laura Dazzi
- Department of Life and Environmental Sciences, University of Cagliari, Cittadella Universitaria di Monserrato, 09042, Monserrato, Cagliari, Italy
| | - Maria Giuseppina Pisu
- Institute of Neurosciences, National Research Council (C.N.R.), Cittadella Universitaria, 09042, Monserrato, Cagliari, Italy
| | - Patrizia Porcu
- Institute of Neurosciences, National Research Council (C.N.R.), Cittadella Universitaria, 09042, Monserrato, Cagliari, Italy
| | - Enrico Sanna
- Department of Life and Environmental Sciences, University of Cagliari, Cittadella Universitaria di Monserrato, 09042, Monserrato, Cagliari, Italy; Institute of Neurosciences, National Research Council (C.N.R.), Cittadella Universitaria, 09042, Monserrato, Cagliari, Italy
| | - Fabrizio Sanna
- Department of Biomedical Sciences, University of Cagliari, Cittadella Universitaria di Monserrato, 09042, Monserrato, Cagliari, Italy
| | - Mariangela Serra
- Department of Life and Environmental Sciences, University of Cagliari, Cittadella Universitaria di Monserrato, 09042, Monserrato, Cagliari, Italy
| | - Maria Pina Serra
- Department of Biomedical Sciences, University of Cagliari, Cittadella Universitaria di Monserrato, 09042, Monserrato, Cagliari, Italy
| | - Carlotta Siddi
- Department of Biomedical Sciences, University of Cagliari, Cittadella Universitaria di Monserrato, 09042, Monserrato, Cagliari, Italy
| | - Elio Acquas
- Department of Life and Environmental Sciences, University of Cagliari, Cittadella Universitaria di Monserrato, 09042, Monserrato, Cagliari, Italy
| | - Paolo Follesa
- Department of Life and Environmental Sciences, University of Cagliari, Cittadella Universitaria di Monserrato, 09042, Monserrato, Cagliari, Italy.
| | - Marina Quartu
- Department of Biomedical Sciences, University of Cagliari, Cittadella Universitaria di Monserrato, 09042, Monserrato, Cagliari, Italy
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3
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Yalcin EB, Tong M, Delikkaya B, Pelit W, Yang Y, de la Monte SM. Differential effects of moderate chronic ethanol consumption on neurobehavior, white matter glial protein expression, and mTOR pathway signaling with adolescent brain maturation. THE AMERICAN JOURNAL OF DRUG AND ALCOHOL ABUSE 2024; 50:492-516. [PMID: 38847790 DOI: 10.1080/00952990.2024.2355540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 05/02/2024] [Accepted: 05/08/2024] [Indexed: 09/06/2024]
Abstract
Background: Adolescent brains are highly vulnerable to heavy alcohol exposure. Increased understanding of how alcohol adversely impacts brain maturation may improve treatment outcomes.Objectives: This study characterizes short-term versus long-term effects of ethanol feeding on behavior, frontal lobe glial proteins, and mTOR signaling.Methods: Adolescent rats (8/group) were fed liquid diets containing 26% or 0% ethanol for 2 or 9 weeks, then subjected to novel object recognition (NOR) and open field (OF) tests. Frontal lobes were used for molecular assays.Results: Significant ethanol effects on OF performance occurred in the 2-week model (p < .0001). Further shifts in OF and NOR performance were unrelated to ethanol exposure in the 9-week models (p < .05 to p < .0001). Ethanol inhibited MAG1 (p < .01) and MBP (p < .0001) after 2 but not 9 weeks. However, both control and ethanol 9-week models had significantly reduced MAG1 (p < .001-0.0001), MBP (p < .0001), PDGFRA (p < .05-0.01), and PLP (p < .001-0.0001) relative to the 2-week models. GFAP was the only glial protein significantly inhibited by ethanol in both 2- (p < .01) and 9-week (p < .05) models. Concerning the mTOR pathway, ethanol reduced IRS-1 (p < .05) and globally inhibited mTOR (p < .01 or p < .001) in the 9- but not the 2-week model.Conclusions: Short-term versus long-term ethanol exposures differentially alter neurobehavioral function, glial protein expression, and signaling through IRS-1 and mTOR, which have known roles in myelination during adolescence. These findings suggest that strategies to prevent chronic alcohol-related brain pathology should consider the increased maturation-related vulnerability of adolescent brains.
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Affiliation(s)
- Emine B Yalcin
- Department of Pathology and Laboratory Medicine, Rhode Island Hospital, Lifespan Academic Institutions, The Providence VA Medical Center, The Warren Alpert Medical School of Brown University, Providence, RI, USA
| | - Ming Tong
- Department of Medicine, Rhode Island Hospital, Lifespan Academic Institutions, The Warren Alpert Medical School of Brown University, Providence, RI, USA
| | - Busra Delikkaya
- Department of Pathology and Laboratory Medicine, Rhode Island Hospital, Lifespan Academic Institutions, The Providence VA Medical Center, The Warren Alpert Medical School of Brown University, Providence, RI, USA
| | - William Pelit
- Department of Chemistry, Brown University, Providence, RI, USA
| | - Yiwen Yang
- Biotechnology Graduate Program, Brown University, Providence, RI, USA
| | - Suzanne M de la Monte
- Department of Pathology and Laboratory Medicine, Rhode Island Hospital, Lifespan Academic Institutions, The Providence VA Medical Center, The Warren Alpert Medical School of Brown University, Providence, RI, USA
- Department of Medicine, Rhode Island Hospital, Lifespan Academic Institutions, The Warren Alpert Medical School of Brown University, Providence, RI, USA
- Departments of Neurology and Neurosurgery, Rhode Island Hospital, The Warren Alpert Medical School of Brown University, Providence, RI, USA
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4
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Asefi MB, Heidari A, Hajikarim-Hamedani A, Mousavi Z, Ashabi G, Sadat-Shirazi MS, Zarrindast MR. Preconception ethanol exposure changes anxiety, depressive and checking-like behavior and alter the expression levels of MAO-B in male offspring. Neurotoxicol Teratol 2024; 104:107367. [PMID: 38866258 DOI: 10.1016/j.ntt.2024.107367] [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: 03/17/2024] [Revised: 05/18/2024] [Accepted: 06/08/2024] [Indexed: 06/14/2024]
Abstract
Alcohol use, which alters the epigenome, increases the probability that it could affect subsequent generations, even if they were never directly exposed to ethanol or even in utero. We explored the effects of parental ethanol exposure before conception on behavioral changes in the offspring. Considering the role of Monoamine oxidase-B (MAO-B) in dopamine turnover in the prefrontal cortex (PFC) and its influence on behavior, and taking into account that ethanol exposure could alter MAO-B, we assessed the protein levels in the offspring. Male and female rats were exposed to ethanol for 30 days and then allowed ten days of abstinence. Afterward, they were mated with either control or ethanol-exposed rats. The F1 and F2 male offspring underwent tests to assess behavioral changes. Additionally, the levels of MAO-B in the PFC were evaluated. Results revealed that in the F1, anxiety increased only in the bi-parental ethanol-exposed male offspring in the elevated plus maze test (p < 0.05), while depressive-like behavior rose only in maternal and bi-parental ethanol-exposed offspring (p < 0.01). However, compulsive-like behavior increased in all ethanol-exposed offspring (p < 0.01). No significant phenotypic changes were observed in the F2. The levels of MAO-B in the PFC increased in the maternal (p < 0.05) and bi-parental ethanol-exposed offspring (p < 0.01). Our study demonstrates that parental ethanol exposure, even in the days preceding mating, adversely affects behaviors and induces molecular changes in the brain. Given these findings, it becomes imperative to monitor children exposed to parental (especially maternal) ethanol for the prevention of mental disorders.
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Affiliation(s)
- Mohammad Basir Asefi
- Faculty of Pharmacy and Pharmaceutical Sciences, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran; Iranian National Center for Addiction Studies, Tehran University of Medical Sciences, Tehran, Iran.
| | - Amirhossein Heidari
- Faculty of Medicine, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran.
| | | | - Zahra Mousavi
- Department of Pharmacology-Toxicology, Faculty of Pharmacy and Pharmaceutical Sciences, Tehran Medical Sciences, Islamic Azad University, Iran
| | - Ghorbangol Ashabi
- Department of Physiology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | | | - Mohammad-Reza Zarrindast
- Iranian National Center for Addiction Studies, Tehran University of Medical Sciences, Tehran, Iran; Department of Pharmacology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran.
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Hilal FF, Jeanblanc J, Deschamps C, Naassila M, Pierrefiche O, Ben Hamida S. Epigenetic drugs and psychedelics as emerging therapies for alcohol use disorder: insights from preclinical studies. J Neural Transm (Vienna) 2024; 131:525-561. [PMID: 38554193 DOI: 10.1007/s00702-024-02757-3] [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: 11/24/2023] [Accepted: 02/22/2024] [Indexed: 04/01/2024]
Abstract
Alcohol use disorder (AUD) is a public health issue that affects millions of people worldwide leading to physical, mental and socio-economic consequences. While current treatments for AUD have provided relief to individuals, their effectiveness on the long term is often limited, leaving a number of affected individuals without sustainable solutions. In this review, we aim to explore two emerging approaches for AUD: psychedelics and epigenetic drugs (i.e., epidrugs). By examining preclinical studies, different animal species and procedures, we delve into the potential benefits of each of these treatments in terms of addictive behaviors (alcohol drinking and seeking, motivation to drink alcohol and prevention of relapse). Because psychedelics and epidrugs may share common and complementary mechanisms of action, there is an exciting opportunity for exploring synergies between these approaches and their parallel effectiveness in treating AUD and the diverse associated psychiatric conditions.
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Affiliation(s)
- Fahd François Hilal
- INSERM UMR 1247-Research Group on Alcohol and Pharmacodependences (GRAP), Université de Picardie Jules Verne, Chemin du Thil - Centre Universitaire de Recherche en Santé, 80025, Amiens, France
| | - Jerome Jeanblanc
- INSERM UMR 1247-Research Group on Alcohol and Pharmacodependences (GRAP), Université de Picardie Jules Verne, Chemin du Thil - Centre Universitaire de Recherche en Santé, 80025, Amiens, France
| | - Chloé Deschamps
- INSERM UMR 1247-Research Group on Alcohol and Pharmacodependences (GRAP), Université de Picardie Jules Verne, Chemin du Thil - Centre Universitaire de Recherche en Santé, 80025, Amiens, France
| | - Mickael Naassila
- INSERM UMR 1247-Research Group on Alcohol and Pharmacodependences (GRAP), Université de Picardie Jules Verne, Chemin du Thil - Centre Universitaire de Recherche en Santé, 80025, Amiens, France.
| | - Olivier Pierrefiche
- INSERM UMR 1247-Research Group on Alcohol and Pharmacodependences (GRAP), Université de Picardie Jules Verne, Chemin du Thil - Centre Universitaire de Recherche en Santé, 80025, Amiens, France
| | - Sami Ben Hamida
- INSERM UMR 1247-Research Group on Alcohol and Pharmacodependences (GRAP), Université de Picardie Jules Verne, Chemin du Thil - Centre Universitaire de Recherche en Santé, 80025, Amiens, France.
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6
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Steiner NL, Purohit DC, Tiefenthaler CM, Mandyam CD. Abstinence and Fear Experienced during This Period Produce Distinct Cortical and Hippocampal Adaptations in Alcohol-Dependent Rats. Brain Sci 2024; 14:431. [PMID: 38790410 PMCID: PMC11118749 DOI: 10.3390/brainsci14050431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Revised: 04/14/2024] [Accepted: 04/20/2024] [Indexed: 05/26/2024] Open
Abstract
Previous studies demonstrate that ethanol dependence induced by repeating cycles of chronic intermittent ethanol vapor exposure (CIE) followed by protracted abstinence produces significant gray matter damage via myelin dysfunction in the rodent medial prefrontal cortex (mPFC) and alterations in neuronal excitability in the mPFC and the dentate gyrus (DG) of the hippocampus. Specifically, abstinence-induced neuroadaptations have been associated with persistent elevated relapse to drinking. The current study evaluated the effects of forced abstinence for 1 day (d), 7 d, 21 d, and 42 d following seven weeks of CIE on synaptic plasticity proteins in the mPFC and DG. Immunoblotting revealed reduced expression of CaMKII in the mPFC and enhanced expression of GABAA and CaMKII in the DG at the 21 d time point, and the expression of the ratio of GluN2A/2B subunits did not change at any of the time points studied. Furthermore, cognitive performance via Pavlovian trace fear conditioning (TFC) was evaluated in 3 d abstinent rats, as this time point is associated with negative affect. In addition, the expression of the ratio of GluN2A/2B subunits and a 3D structural analysis of neurons in the mPFC and DG were evaluated in 3 d abstinent rats. Behavioral analysis revealed faster acquisition of fear responses and reduced retrieval of fear memories in CIE rats compared to controls. TFC produced hyperplasticity of pyramidal neurons in the mPFC under control conditions and this effect was not evident or blunted in abstinent rats. Neurons in the DG were unaltered. TFC enhanced the GluN2A/2B ratio in the mPFC and reduced the ratio in the DG and was not altered by abstinence. These findings indicate that forced abstinence from CIE produces distinct and divergent alterations in plasticity proteins in the mPFC and DG. Fear learning-induced changes in structural plasticity and proteins contributing to it were more profound in the mPFC during forced abstinence.
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Affiliation(s)
- Noah L. Steiner
- VA San Diego Healthcare System, San Diego, CA 92161, USA; (N.L.S.)
| | | | - Casey M. Tiefenthaler
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, San Diego, CA 92093, USA;
| | - Chitra D. Mandyam
- VA San Diego Healthcare System, San Diego, CA 92161, USA; (N.L.S.)
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, San Diego, CA 92093, USA;
- Department of Anesthesiology, University of California San Diego, San Diego, CA 92093, USA
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7
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Tap SC. The potential of 5-methoxy-N,N-dimethyltryptamine in the treatment of alcohol use disorder: A first look at therapeutic mechanisms of action. Addict Biol 2024; 29:e13386. [PMID: 38600715 PMCID: PMC11007263 DOI: 10.1111/adb.13386] [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: 09/27/2023] [Revised: 12/24/2023] [Accepted: 02/13/2024] [Indexed: 04/12/2024]
Abstract
Alcohol use disorder (AUD) remains one of the most prevalent psychiatric disorders worldwide with high economic costs. Current treatment options show modest efficacy and relapse rates are high. Furthermore, there are increases in the treatment gap and few new medications have been approved in the past 20 years. Recently, psychedelic-assisted therapy with psilocybin and lysergic acid diethylamide has garnered significant attention in the treatment of AUD. Yet, they require significant amounts of therapist input due to prolonged subjective effects (~4-12 h) leading to high costs and impeding implementation. Accordingly, there is an increasing interest in the rapid and short-acting psychedelic 5-methoxy-N,N-dimethyltryptamine (5-MeO-DMT). This paper offers a first look at potential therapeutic mechanisms for AUD by reviewing the current literature on 5-MeO-DMT. Primarily, 5-MeO-DMT is able to induce mystical experiences and ego-dissolution together with increases in psychological flexibility and mindfulness. This could decrease AUD symptoms through the alleviation of psychiatric mood-related comorbidities consistent with the negative reinforcement and self-medication paradigms. In addition, preliminary evidence indicates that 5-MeO-DMT modulates neural oscillations that might subserve ego-dissolution (increases in gamma), psychological flexibility and mindfulness (increases in theta), and the reorganization of executive control networks (increases in coherence across frequencies) that could improve emotion regulation and inhibition. Finally, animal studies show that 5-MeO-DMT is characterized by neuroplasticity, anti-inflammation, 5-HT2A receptor agonism, and downregulation of metabotropic glutamate receptor 5 with clinical implications for AUD and psychiatric mood-related comorbidities. The paper concludes with several recommendations for future research to establish the purported therapeutic mechanisms of action.
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Affiliation(s)
- Stephan C. Tap
- Department of PsychiatryGroningen University Medical CenterGroningenThe Netherlands
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8
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Lee HL, Kim JM, Go MJ, Lee HS, Kim JH, Heo HJ. Fermented Protaetia brevitarsis Larvae Improves Neurotoxicity in Chronic Ethanol-Induced-Dementia Mice via Suppressing AKT and NF-κB Signaling Pathway. Int J Mol Sci 2024; 25:2629. [PMID: 38473876 DOI: 10.3390/ijms25052629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Revised: 02/21/2024] [Accepted: 02/22/2024] [Indexed: 03/14/2024] Open
Abstract
This study was investigated to examine the neuroprotective effect of fermented Protaetia brevitarsis larvae (FPB) in ethanol-induced-dementia mice. Consumption of FPB by mice resulted in improved memory dysfunction in the Y-maze, passive avoidance, and Morris water maze tests. FPB significantly decreased oxidative stress by regulating levels of malondialdehyde (MDA), superoxide dismutase (SOD), and reduced glutathione (GSH) in brain tissues. In addition, FPB restored cerebral mitochondrial dysfunction by modulating levels of reactive oxygen species (ROS), mitochondrial membrane potential (MMP), and ATP. In addition, FPB enhanced the cholinergic system via the regulation of acetylcholine (ACh) content, acetylcholinesterase (AChE) activity, and expressions of AChE and choline acetyltransferase (ChAT) in brain tissues. FPB ameliorated neuronal apoptosis through modulation of the protein kinase B (AKT)/B-cell lymphoma (BCL)-2 signaling pathway. Also, FPB improved inflammation response by down-regulating the toll-like receptor (TLR)-4/nuclear factor (NF)-κB pathway. Additionally, FPB ameliorated synaptic plasticity via the increase of the expressions of synaptophysin (SYP), postsynaptic density protein (PSD)-95, and growth-associated protein (GAP)-43. Treatment with FPB also reinforced the blood-brain barrier by increasing tight junctions including zonula occludens (ZO)-1, occludin, and claudin-1. In conclusion, these results show that FPB can improve cognitive impairment via AKT/NF-κB pathways in ethanol-induced-dementia mice.
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Affiliation(s)
- Hyo Lim Lee
- Division of Applied Life Science (BK21), Institute of Agriculture and Life Science, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Jong Min Kim
- Division of Applied Life Science (BK21), Institute of Agriculture and Life Science, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Min Ji Go
- Division of Applied Life Science (BK21), Institute of Agriculture and Life Science, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Han Su Lee
- Division of Applied Life Science (BK21), Institute of Agriculture and Life Science, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Ju Hui Kim
- Division of Applied Life Science (BK21), Institute of Agriculture and Life Science, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Ho Jin Heo
- Division of Applied Life Science (BK21), Institute of Agriculture and Life Science, Gyeongsang National University, Jinju 52828, Republic of Korea
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9
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Sartori BM, Moreira Júnior RE, Paiva IM, Moraes IB, Murgas LDS, Brunialti-Godard AL. Acute ethanol exposure leads to long-term effects on memory, behavior, and transcriptional regulation in the zebrafish brain. Behav Brain Res 2023; 444:114352. [PMID: 36842314 DOI: 10.1016/j.bbr.2023.114352] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 02/02/2023] [Accepted: 02/15/2023] [Indexed: 02/27/2023]
Abstract
Alcohol consumption is associated with alterations in memory and learning processes in humans and animals. In this context, research models such as the zebrafish (Danio rerio) arise as key organisms in behavioral and molecular studies that attempt to clarify alterations in the Central Nervous System (CNS), like those related to alcohol use. Accordingly, we used the zebrafish as a model to evaluate the effects of ethanol on the learning and memory process, as well as its relationship with behavior and transcriptional regulation of lrfn2, lrrk2, grin1a, and bdnf genes in the brain. To this end, for the memory and learning evaluation, we conducted the Novel Object Recognition test (NOR); for behavior, the Novel Tank test; and for gene transcription, qPCR, after 2 h, 24 h, and 8 days of ethanol exposure. As a result, we noticed in the NOR that after 8 days of ethanol exposure, the control group spent more time exploring the novel object than when compared to 2 h post-exposure, indicating that naturally zebrafish remember familiar objects. In animals in the Treatment group, however, no object recognition behavior was observed, suggesting that alcohol affected the learning and memory processes of the animals and stimulated an anxiolytic effect in them. Regarding transcriptional regulation, 24 h after alcohol exposure, we found hyper-regulation of bdnf and, after 8 days, a hypo-regulation of lrfn2 and lrrk2. To conclude, we demonstrated that ethanol exposure may have influenced learning ability and memory formation in zebrafish, as well as behavior and regulation of gene transcription. These data are relevant for further understanding the application of zebrafish in research associated with ethanol consumption and behavior.
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Affiliation(s)
- Barbara Miranda Sartori
- Laboratório de Genética Animal e Humana, Departamento de Genética, Ecologia e Evolução, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil
| | - Renato Elias Moreira Júnior
- Laboratório de Genética Animal e Humana, Departamento de Genética, Ecologia e Evolução, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil
| | - Isadora Marques Paiva
- Laboratório de Genética Animal e Humana, Departamento de Genética, Ecologia e Evolução, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil; Centro de Pesquisas em Doenças Inflamatórias (CRID), Faculdade de Medicina de Ribeirão Preto, Departamento de Farmacologia, Universidade de São Paulo (FMRP), Ribeirão Preto, Brazil
| | - Izabela Barbosa Moraes
- Laboratório de Genética Animal e Humana, Departamento de Genética, Ecologia e Evolução, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil; Centro das Ciências Biológicas e da Saúde, Universidade Federal do Oeste da Bahia (UFOB), Barreiras, Brazil
| | - Luis David Solis Murgas
- Biotério Central, Departamento de Medicina Veterinária, Universidade Federal de Lavras (UFLA), Lavras, Brazil
| | - Ana Lúcia Brunialti-Godard
- Laboratório de Genética Animal e Humana, Departamento de Genética, Ecologia e Evolução, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil.
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10
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Nuñez-delMoral A, Bianchi PC, Brocos-Mosquera I, Anesio A, Palombo P, Camarini R, Cruz FC, Callado LF, Vialou V, Erdozain AM. The Matricellular Protein Hevin Is Involved in Alcohol Use Disorder. Biomolecules 2023; 13:biom13020234. [PMID: 36830603 PMCID: PMC9953008 DOI: 10.3390/biom13020234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 01/16/2023] [Accepted: 01/21/2023] [Indexed: 01/27/2023] Open
Abstract
Astrocytic-secreted matricellular proteins have been shown to influence various aspects of synaptic function. More recently, they have been found altered in animal models of psychiatric disorders such as drug addiction. Hevin (also known as Sparc-like 1) is a matricellular protein highly expressed in the adult brain that has been implicated in resilience to stress, suggesting a role in motivated behaviors. To address the possible role of hevin in drug addiction, we quantified its expression in human postmortem brains and in animal models of alcohol abuse. Hevin mRNA and protein expression were analyzed in the postmortem human brain of subjects with an antemortem diagnosis of alcohol use disorder (AUD, n = 25) and controls (n = 25). All the studied brain regions (prefrontal cortex, hippocampus, caudate nucleus and cerebellum) in AUD subjects showed an increase in hevin levels either at mRNA or/and protein levels. To test if this alteration was the result of alcohol exposure or indicative of a susceptibility factor to alcohol consumption, mice were exposed to different regimens of intraperitoneal alcohol administration. Hevin protein expression was increased in the nucleus accumbens after withdrawal followed by a ethanol challenge. The role of hevin in AUD was determined using an RNA interference strategy to downregulate hevin expression in nucleus accumbens astrocytes, which led to increased ethanol consumption. Additionally, ethanol challenge after withdrawal increased hevin levels in blood plasma. Altogether, these results support a novel role for hevin in the neurobiology of AUD.
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Affiliation(s)
- Amaia Nuñez-delMoral
- Department of Pharmacology, University of the Basque Country, UPV/EHU, 48940 Leioa, Spain
- Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Spain
| | - Paula C. Bianchi
- Department of Pharmacology, Universidade Federal de São Paulo-UNIFESP, São Paulo 04023-062, Brazil
| | - Iria Brocos-Mosquera
- Department of Pharmacology, University of the Basque Country, UPV/EHU, 48940 Leioa, Spain
| | - Augusto Anesio
- Department of Pharmacology, Universidade Federal de São Paulo-UNIFESP, São Paulo 04023-062, Brazil
| | - Paola Palombo
- Department of Pharmacology, Universidade Federal de São Paulo-UNIFESP, São Paulo 04023-062, Brazil
| | - Rosana Camarini
- Department of Pharmacology, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo 05508-000, Brazil
| | - Fabio C. Cruz
- Department of Pharmacology, Universidade Federal de São Paulo-UNIFESP, São Paulo 04023-062, Brazil
| | - Luis F. Callado
- Department of Pharmacology, University of the Basque Country, UPV/EHU, 48940 Leioa, Spain
- Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Spain
- Biocruces-Bizkaia Health Research Institute, 48903 Barakaldo, Spain
| | - Vincent Vialou
- Institute of Biology Paris Seine, Neuroscience Paris Seine, CNRS UMR8246, INSERM U1130, Sorbonne Université, 75005 Paris, France
- Correspondence: (V.V.); (A.M.E.); Tel.: +33-1-44-27-60-98 (V.V.); +34-601-28-48 (A.M.E.)
| | - Amaia M. Erdozain
- Department of Pharmacology, University of the Basque Country, UPV/EHU, 48940 Leioa, Spain
- Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Spain
- Correspondence: (V.V.); (A.M.E.); Tel.: +33-1-44-27-60-98 (V.V.); +34-601-28-48 (A.M.E.)
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11
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Grigsby K, Ledford C, Batish T, Kanadibhotla S, Smith D, Firsick E, Tran A, Townsley K, Reyes KAV, LeBlanc K, Ozburn A. Targeting the Maladaptive Effects of Binge Drinking on Circadian Gene Expression. Int J Mol Sci 2022; 23:11084. [PMID: 36232380 PMCID: PMC9569456 DOI: 10.3390/ijms231911084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 09/16/2022] [Accepted: 09/17/2022] [Indexed: 11/17/2022] Open
Abstract
Previous studies (1) support a role of circadian genes in regulating alcohol intake, and (2) reveal that harmful alcohol use alters circadian rhythms. However, there is minimal knowledge of the effects of chronic alcohol processes on rhythmic circadian gene expression across brain regions important for circadian biology and alcohol intake. Therefore, the present study sought to test the effects of chronic binge-like drinking on diurnal circadian gene expression patterns in the master circadian pacemaker (SCN), the ventral tegmental area (VTA), and the nucleus accumbens (NAc) in High Drinking in the Dark-1 (HDID-1) mice, a unique genetic risk model for drinking to intoxication. Consistent with earlier findings, we found that 8 weeks of binge-like drinking reduced the amplitude of several core circadian clock genes in the NAc and SCN, but not the VTA. To better inform the use of circadian-relevant pharmacotherapies in reducing harmful drinking and ameliorating alcohol's effects on circadian gene expression, we tested whether the casein kinase-1 inhibitor, PF-67046, or the phosphodiesterase type-4 (an upstream regulator of circadian signalling) inhibitor, apremilast, would reduce binge-like intake and mitigate circadian gene suppression. PF-67046 did not reduce intake but did have circadian gene effects. In contrast, apremilast reduced drinking, but had no effect on circadian expression patterns.
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Affiliation(s)
- Kolter Grigsby
- Portland Veterans Affairs Medical Center, Research and Development Service, Portland, OR 97239, USA
- Department of Behavioral Neuroscience, Oregon Health and Science University, Portland, OR 97239, USA
| | - Courtney Ledford
- Portland Veterans Affairs Medical Center, Research and Development Service, Portland, OR 97239, USA
- Department of Behavioral Neuroscience, Oregon Health and Science University, Portland, OR 97239, USA
| | - Tanvi Batish
- Portland Veterans Affairs Medical Center, Research and Development Service, Portland, OR 97239, USA
- Department of Behavioral Neuroscience, Oregon Health and Science University, Portland, OR 97239, USA
| | - Snigdha Kanadibhotla
- Portland Veterans Affairs Medical Center, Research and Development Service, Portland, OR 97239, USA
- Department of Behavioral Neuroscience, Oregon Health and Science University, Portland, OR 97239, USA
| | - Delaney Smith
- Portland Veterans Affairs Medical Center, Research and Development Service, Portland, OR 97239, USA
- Department of Behavioral Neuroscience, Oregon Health and Science University, Portland, OR 97239, USA
| | - Evan Firsick
- Portland Veterans Affairs Medical Center, Research and Development Service, Portland, OR 97239, USA
- Department of Behavioral Neuroscience, Oregon Health and Science University, Portland, OR 97239, USA
| | - Alexander Tran
- Portland Veterans Affairs Medical Center, Research and Development Service, Portland, OR 97239, USA
- Department of Behavioral Neuroscience, Oregon Health and Science University, Portland, OR 97239, USA
| | - Kayla Townsley
- Portland Veterans Affairs Medical Center, Research and Development Service, Portland, OR 97239, USA
- Department of Behavioral Neuroscience, Oregon Health and Science University, Portland, OR 97239, USA
| | - Kaylee-Abril Vasquez Reyes
- Portland Veterans Affairs Medical Center, Research and Development Service, Portland, OR 97239, USA
- Department of Behavioral Neuroscience, Oregon Health and Science University, Portland, OR 97239, USA
| | - Katherine LeBlanc
- Portland Veterans Affairs Medical Center, Research and Development Service, Portland, OR 97239, USA
- Department of Behavioral Neuroscience, Oregon Health and Science University, Portland, OR 97239, USA
| | - Angela Ozburn
- Portland Veterans Affairs Medical Center, Research and Development Service, Portland, OR 97239, USA
- Department of Behavioral Neuroscience, Oregon Health and Science University, Portland, OR 97239, USA
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12
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Liu P, Zhao S, Qiao H, Li T, Mi W, Xu Z, Xue X. Does propofol definitely improve postoperative cognitive dysfunction?-a review of propofol-related cognitive impairment. Acta Biochim Biophys Sin (Shanghai) 2022; 54:875-881. [PMID: 35713318 PMCID: PMC9828335 DOI: 10.3724/abbs.2022067] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Postoperative cognitive dysfunction (POCD) is a common brain function-related complication after surgery. In addition to old age being an independent risk factor, anesthetics are also important predisposing factors. Among them, propofol is the most commonly used intravenous anesthetic in clinical practice. It has a rapid onset, short half-life, and high recovery quality. Many studies report that propofol can attenuate surgery-induced cognitive impairment, however, some other studies reveal that propofol also induces cognitive dysfunction. Therefore, this review summarizes the effects of propofol on the cognition, and discusses possible related mechanisms, which aims to provide some evidence for the follow-up studies.
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Affiliation(s)
- Pengfei Liu
- Department of AnesthesiologyBeijing Shijitan HospitalCapital Medical UniversityBeijing100038China,Anesthesia and Operation Centerthe First Medical CenterChinese PLA General HospitalBeijing100853China
| | - Sheng Zhao
- Department of CardiologyFuwai HospitalNational Center for Cardiovascular DiseaseChinese Academy of Medical Science and Peking Union Medical CollegeBeijing100037China
| | - Hui Qiao
- Department of AnesthesiologyBeijing Shijitan HospitalCapital Medical UniversityBeijing100038China
| | - Tianzuo Li
- Department of AnesthesiologyBeijing Shijitan HospitalCapital Medical UniversityBeijing100038China
| | - Weidong Mi
- Anesthesia and Operation Centerthe First Medical CenterChinese PLA General HospitalBeijing100853China,Correspondence address. Tel: +86-13381082966; E-mail: (W.M.) / Tel: +86-15210319808; E-mail: (Z.X.) /Tel: +86-15210903118; E-mail: (X.X.) @
| | - Zhipeng Xu
- Anesthesia and Operation Centerthe First Medical CenterChinese PLA General HospitalBeijing100853China,Correspondence address. Tel: +86-13381082966; E-mail: (W.M.) / Tel: +86-15210319808; E-mail: (Z.X.) /Tel: +86-15210903118; E-mail: (X.X.) @
| | - Xinying Xue
- Department of Respiratory and Critical CareBeijing Shijitan HospitalCapital Medical UniversityBeijing100038China,Correspondence address. Tel: +86-13381082966; E-mail: (W.M.) / Tel: +86-15210319808; E-mail: (Z.X.) /Tel: +86-15210903118; E-mail: (X.X.) @
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13
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Rose JK, Butterfield M, Liang J, Parvand M, Lin CHS, Rankin CH. Neuroligin Plays a Role in Ethanol-Induced Disruption of Memory and Corresponding Modulation of Glutamate Receptor Expression. Front Behav Neurosci 2022; 16:908630. [PMID: 35722190 PMCID: PMC9204643 DOI: 10.3389/fnbeh.2022.908630] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Accepted: 05/04/2022] [Indexed: 11/13/2022] Open
Abstract
Exposure to alcohol causes deficits in long-term memory formation across species. Using a long-term habituation memory assay in Caenorhabditis elegans, the effects of ethanol on long-term memory (> 24 h) for habituation were investigated. An impairment in long-term memory was observed when animals were trained in the presence of ethanol. Cues of internal state or training context during testing did not restore memory. Ethanol exposure during training also interfered with the downregulation of AMPA/KA-type glutamate receptor subunit (GLR-1) punctal expression previously associated with long-term memory for habituation in C. elegans. Interestingly, ethanol exposure alone had the opposite effect, increasing GLR-1::GFP punctal expression. Worms with a mutation in the C. elegans ortholog of vertebrate neuroligins (nlg-1) were resistant to the effects of ethanol on memory, as they displayed both GLR-1::GFP downregulation and long-term memory for habituation after training in the presence of ethanol. These findings provide insights into the molecular mechanisms through which alcohol consumption impacts memory.
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14
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Chronic exposure of alcohol triggers microglia-mediated synaptic elimination inducing cognitive impairment. Exp Neurol 2022; 353:114061. [DOI: 10.1016/j.expneurol.2022.114061] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 02/10/2022] [Accepted: 03/27/2022] [Indexed: 11/21/2022]
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15
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Non-coding RNA in alcohol use disorder by affecting synaptic plasticity. Exp Brain Res 2022; 240:365-379. [PMID: 35028694 DOI: 10.1007/s00221-022-06305-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2021] [Accepted: 01/04/2022] [Indexed: 12/19/2022]
Abstract
Alcohol use disorder (AUD) is one of the most serious public health problems worldwide. AUD is a complex disorder, and there is ample evidence that genetic predisposition is critical to its development. Recent studies have shown that genetic predisposition leads to the onset of AUD, and alcohol metabolism can affect epigenetic inheritance, which in turn affects synaptic plasticity, alters brain function, and leads to more severe addictive behaviors. Non-coding RNAs (ncRNAs), especially microRNAs (miRNAs) and long non-coding RNAs (lncRNAs), play an important role in alcohol addiction. This paper reviews the regulatory role of ncRNAs. ncRNAs are involved in enzyme and neurotransmitter reaction systems during alcohol use disorder. Alcohol consumption regulates the expression of ncRNAs that mediate epigenetic modification and synaptic plasticity, which play an important role in the development of chronic AUD. ncRNAs may be used not only as predictors of therapeutic responses but also as therapeutic targets of AUD. Chronic alcoholism is more likely to lead to neuroimmune disorders, including permanent brain dysfunction. AUD induced by long-term alcoholism greatly alters the expression of genes in the human genome, especially the expression of ncRNAs. Alcohol can cause a series of pathological changes by interfering with gene expression, such as through disordered miRNA-mRNA expression networks, epigenetic modifications, disordered metabolism, and even synaptic remodeling. ncRNAs are involved in the transition from moderate drinking to alcohol dependence.
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16
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Ge F, Zhu D, Tian M, Shi J. The Role of Thyroid Function in Alzheimer's Disease. J Alzheimers Dis 2021; 83:1553-1562. [PMID: 34420955 DOI: 10.3233/jad-210339] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The thyroid gland is crucial for the regulation of metabolism, growth, and development of various tissues, organs, systems, including the central nervous system. Recent studies have implicated the role of thyroid dysfunction in the etiology of Alzheimer's disease (AD), while AD leads to a significant increase in the prevalence of thyroid dysfunction. In this review, we have analyzed the role of thyroid function in the pathophysiology of AD as well as its biomarkers. The present review aims to provide encouraging targets for early screening of AD risk factors and intervention strategies.
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Affiliation(s)
- Feifei Ge
- Department of Neurology, The Affiliated Brain Hospital of Nanjing Medical University, Nanjing, China
| | - Donglin Zhu
- Department of Neurology, The Affiliated Brain Hospital of Nanjing Medical University, Nanjing, China
| | - Minjie Tian
- Department of Neurology, The Affiliated Brain Hospital of Nanjing Medical University, Nanjing, China
| | - Jingping Shi
- Department of Neurology, The Affiliated Brain Hospital of Nanjing Medical University, Nanjing, China
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17
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Caveolin-1 Expression in the Dorsal Striatum Drives Methamphetamine Addiction-Like Behavior. Int J Mol Sci 2021; 22:ijms22158219. [PMID: 34360984 PMCID: PMC8348638 DOI: 10.3390/ijms22158219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 07/20/2021] [Accepted: 07/22/2021] [Indexed: 11/17/2022] Open
Abstract
Dopamine D1 receptor (D1R) function is regulated by membrane/lipid raft-resident protein caveolin-1 (Cav1). We examined whether altered expression of Cav1 in the dorsal striatum would affect self-administration of methamphetamine, an indirect agonist at the D1Rs. A lentiviral construct expressing Cav1 (LV-Cav1) or containing a short hairpin RNA against Cav1 (LV-shCav1) was used to overexpress or knock down Cav1 expression respectively, in the dorsal striatum. Under a fixed-ratio schedule, LV-Cav1 enhanced and LV-shCav1 reduced responding for methamphetamine in an extended access paradigm compared to LV-GFP controls. LV-Cav1 and LV-shCav1 also produced an upward and downward shift in a dose–response paradigm, generating a drug vulnerable/resistant phenotype. LV-Cav1 and LV-shCav1 did not alter responding for sucrose. Under a progressive-ratio schedule, LV-shCav1 generally reduced positive-reinforcing effects of methamphetamine and sucrose as seen by reduced breakpoints. Western blotting confirmed enhanced Cav1 expression in LV-Cav1 rats and reduced Cav1 expression in LV-shCav1 rats. Electrophysiological findings in LV-GFP rats demonstrated an absence of high-frequency stimulation (HFS)-induced long-term potentiation (LTP) in the dorsal striatum after extended access methamphetamine self-administration, indicating methamphetamine-induced occlusion of plasticity. LV-Cav1 prevented methamphetamine-induced plasticity via increasing phosphorylation of calcium calmodulin kinase II, suggesting a mechanism for addiction vulnerability. LV-shCav1 produced a marked deficit in the ability of HFS to produce LTP and, therefore, extended access methamphetamine was unable to alter striatal plasticity, indicating a mechanism for resistance to addiction-like behavior. Our results demonstrate that Cav1 expression and knockdown driven striatal plasticity assist with modulating addiction to drug and nondrug rewards, and inspire new strategies to reduce psychostimulant addiction.
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18
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Nixon K, Guerin S. Introduction to a Special Issue: Alcohol and Neural Plasticity. Brain Plast 2020. [PMCID: PMC7902981 DOI: 10.3233/bpl-209001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Affiliation(s)
- Kimberly Nixon
- Division of Pharmacology & Toxicology, College of Pharmacy, The University of Texas at Austin, Austin, TX, USA
| | - Steven Guerin
- Division of Pharmacology & Toxicology, College of Pharmacy, The University of Texas at Austin, Austin, TX, USA
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Avchalumov Y, Trenet W, Piña-Crespo J, Mandyam C. SCH23390 Reduces Methamphetamine Self-Administration and Prevents Methamphetamine-Induced Striatal LTD. Int J Mol Sci 2020; 21:E6491. [PMID: 32899459 PMCID: PMC7554976 DOI: 10.3390/ijms21186491] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 09/01/2020] [Accepted: 09/02/2020] [Indexed: 12/21/2022] Open
Abstract
Extended-access methamphetamine self-administration results in unregulated intake of the drug; however, the role of dorsal striatal dopamine D1-like receptors (D1Rs) in the reinforcing properties of methamphetamine under extended-access conditions is unclear. Acute (ex vivo) and chronic (in vivo) methamphetamine exposure induces neuroplastic changes in the dorsal striatum, a critical region implicated in instrumental learning. For example, methamphetamine exposure alters high-frequency stimulation (HFS)-induced long-term depression in the dorsal striatum; however, the effect of methamphetamine on HFS-induced long-term potentiation (LTP) in the dorsal striatum is unknown. In the current study, dorsal striatal infusion of SCH23390, a D1R antagonist, prior to extended-access methamphetamine self-administration reduced methamphetamine addiction-like behavior. Reduced behavior was associated with reduced expression of PSD-95 in the dorsal striatum. Electrophysiological findings demonstrate that superfusion of methamphetamine reduced basal synaptic transmission and HFS-induced LTP in dorsal striatal slices, and SCH23390 prevented this effect. These results suggest that alterations in synaptic transmission and synaptic plasticity induced by acute methamphetamine via D1Rs could assist with methamphetamine-induced modification of corticostriatal circuits underlying the learning of goal-directed instrumental actions and formation of habits, mediating escalation of methamphetamine self-administration and methamphetamine addiction-like behavior.
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Affiliation(s)
- Yosef Avchalumov
- VA San Diego Healthcare System, San Diego, CA 92161, USA; (Y.A.); (W.T.)
| | - Wulfran Trenet
- VA San Diego Healthcare System, San Diego, CA 92161, USA; (Y.A.); (W.T.)
| | - Juan Piña-Crespo
- Department of Molecular Medicine, Scripps Research, La Jolla, CA 92037, USA;
| | - Chitra Mandyam
- VA San Diego Healthcare System, San Diego, CA 92161, USA; (Y.A.); (W.T.)
- Department of Anesthesiology, University of California San Diego, San Diego, CA 92161, USA
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