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Mohanraj PS, Das A, Sen A, Prithviraj M. Brain-Derived Neurotrophic Factor Levels in Cannabis Use Disorders - A Systematic Review and Meta-Analysis. Cureus 2023; 15:e45960. [PMID: 37900486 PMCID: PMC10600331 DOI: 10.7759/cureus.45960] [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] [Accepted: 09/25/2023] [Indexed: 10/31/2023] Open
Abstract
The prevalence of cannabis use disorders has become a noteworthy global public health issue. Understanding the neurobiological factors associated with cannabis use disorder (CUD) is crucial for creating effective interventions. One such factor, the brain-derived neurotrophic factor (BDNF), has been linked to the onset and persistence of addictive behaviors. This systematic review aims to summarize the existing literature on BDNF levels in individuals with CUD to provide a comprehensive overview of the current evidence. A systematic search was conducted using electronic databases (PubMed, Scopus) for relevant studies. The search approach yielded a total of 785 articles, with 559 located in the PubMed database and 226 in Scopus. Studies reporting BDNF levels in individuals with CUD compared to healthy controls were included in this study. Ultimately, eight articles were included in this systematic review. The primary emphasis of these studies was on individuals who were cannabis users or had a dependency on cannabis. There is considerable variation in the estimated effect size among included studies due to heterogeneity; hence, a random effect model was used for meta-analysis. The findings of our study suggest that the effect size of BDNF levels was 0.25 with 95% CI (-0.55; 1.05) in cannabis users, which was not statistically significant (p-value=0.54). Therefore, it is important to interpret the results with caution, and additional research is warranted to investigate the potential factors contributing to this heterogeneity.
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Affiliation(s)
- Palani S Mohanraj
- Biochemistry, All India Institute of Medical Sciences, Gorakhpur, IND
| | - Arani Das
- Physiology, All India Institute of Medical Sciences, Gorakhpur, IND
| | - Aniruddha Sen
- Biochemistry, All India Institute of Medical Sciences, Gorakhpur, IND
| | - Manoj Prithviraj
- Psychiatry, All India Institute of Medical Sciences, Gorakhpur, IND
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Sequeira-Cordero A, Brenes JC. Time course of plasticity-related alterations following the first exposure to amphetamine in juvenile rats. Pharmacol Biochem Behav 2022; 221:173489. [PMID: 36375621 DOI: 10.1016/j.pbb.2022.173489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2022] [Revised: 10/14/2022] [Accepted: 11/08/2022] [Indexed: 11/13/2022]
Abstract
In vulnerable consumers, the first drug exposure induces various neurobehavioral adaptations that may represent the starting point toward addiction. Elucidating the neuroplastic mechanisms underlying that first rewarding experience would contribute to understanding the transition from recreational to compulsive drug use. In a preclinical model with juvenile rats, we analyzed the time-dependent fluctuations in the expression of neuroplasticity-related genes like the brain-derived neurotrophic factor (BDNF), its tropomyosin receptor kinase B (TrkB), the cAMP response element-binding protein (CREB), the microRNA-132, the Rho GTPase-activating protein 32 (p250GAP), the corticotropin-releasing factor (CRF), and the neurotransmitters contents in the nucleus accumbens (NAc) and the dorsal striatum (DS) 45, 90, and 180 min after an amphetamine (AMPH) injection. As expected, AMPH altered the concentration of norepinephrine, dopamine, DOPAC, and serotonin in a region- and time-dependent manner. Regarding gene expression, AMPH at 45 min upregulated BDNF and primiR-132 expression in NAc and downregulated TrkB expression in DS. At 90 min, AMPH upregulated TrkB, CREB, p250GAP, and primiR-132 expression in NAc and BDNF, primiR-132, and CRF in DS. At 180 min, only BNDF in NAc continued to be upregulated by AMPH. Based on the levels of AMPH-induced hyperactivity, we classified the rats as low and high AMPH responders. High AMPH responders characterized by overexpressing BDNF, CREB, p250GAP, and CRF in NAc and by showing lower levels of dopamine and serotonin metabolites and turnovers in both regions. Our findings demonstrated that a single AMPH administration is enough to induce neuroplastic adaptations, especially in the NAc of prone rats.
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Affiliation(s)
- Andrey Sequeira-Cordero
- Instituto de Investigaciones en Salud, Universidad de Costa Rica, Costa Rica; Centro de Investigación en Neurociencias, Universidad de Costa Rica, Costa Rica
| | - Juan C Brenes
- Instituto de Investigaciones Psicológicas, Universidad de Costa Rica, Costa Rica; Centro de Investigación en Neurociencias, Universidad de Costa Rica, Costa Rica.
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Bushen-Tiansui Formula Improves Cognitive Functions in an A β 1-42 Fibril-Infused Rat Model of Alzheimer's Disease. Neural Plast 2020; 2020:8874885. [PMID: 33029123 PMCID: PMC7532368 DOI: 10.1155/2020/8874885] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 08/21/2020] [Accepted: 09/15/2020] [Indexed: 01/24/2023] Open
Abstract
Bushen-Tiansui Formula (BTF) was empirically updated from a classical prescription named Kong-Sheng-Zhen-Zhong pill. It is based on the traditional Chinese medicine theory of the mutual relationship between the brain and the kidney and is intended to treat neurodegenerative diseases. This formulation has been used for several years to treat patients with Alzheimer's disease- (AD-) like symptoms in our clinical department. However, the medicinal ingredients and the mechanisms by which BTF improves cognition and memory functions have not been characterized. In this study, we used UPLC-MS to generate a chromatographic fingerprinting of BTF and identified five possible active ingredients, including stilbene glycoside; epimedin A1, B, and C; and icariin. We also showed that oral administration of BTF reversed the cognitive defects in an Aβ1–42 fibril-infused rat model of AD, protected synaptic ultrastructure in the CA1 region, and restored the expression of BDNF, synaptotagmin (Syt), and PSD95. These effects likely occurred through the BDNF-activated receptor tyrosine kinase B (TrkB)/Akt/CREB signaling pathway. Furthermore, BTF exhibited no short-term or chronic toxicity in rats. Together, these results provided a scientific support for the clinical use of BTF to improve learning and memory in patients with AD.
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Morella I, Hallum H, Brambilla R. Dopamine D1 and Glutamate Receptors Co-operate With Brain-Derived Neurotrophic Factor (BDNF) and TrkB to Modulate ERK Signaling in Adult Striatal Slices. Front Cell Neurosci 2020; 14:564106. [PMID: 33304241 PMCID: PMC7701236 DOI: 10.3389/fncel.2020.564106] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Accepted: 10/19/2020] [Indexed: 11/13/2022] Open
Abstract
In the striatum, the input nucleus of the basal ganglia, the extracellular-signal-regulated kinase (ERK) pathway, necessary for various forms of behavioral plasticity, is triggered by the combined engagement of dopamine D1 and ionotropic glutamate receptors. In this study, we investigated the potential crosstalk between glutamatergic, dopaminergic, and brain-derived neurotrophic factor (BDNF)-TrkB inputs to ERK cascade by using an ex vivo model of mouse striatal slices. Our results confirmed that the concomitant stimulation of D1 and glutamate receptors is necessary to activate ERK in striatal medium spiny neurons (MSNs). Moreover, we found that ERK activation is significantly enhanced when BDNF is co-applied either with glutamate or the D1 agonist SKF38393, supporting the idea of possible integration between BDNF, glutamate, and D1R-mediated signaling. Interestingly, ERK activation via BDNF-TrkB is upregulated upon blockade of either AMPAR/NMDAR or D1 receptors, suggesting a negative regulatory action of these two neurotransmitter systems on BDNF-mediated signaling. However, the observed enhancement of ERK1/2 phosphorylation does not result in corresponding downstream signaling changes at the nuclear level. Conversely, the TrkB antagonist cyclotraxin B partially prevents glutamate- and D1-mediated ERK activation. Altogether, these results suggest a complex and unexpected interaction among dopaminergic, glutamatergic, and BDNF receptor systems to modulate the ERK pathway in striatal neurons.
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Affiliation(s)
- Ilaria Morella
- Neuroscience and Mental Health Research Institute, Cardiff University, Cardiff, United Kingdom.,Division of Neuroscience, School of Biosciences, Cardiff University, Cardiff, United Kingdom
| | - Harriet Hallum
- Neuroscience and Mental Health Research Institute, Cardiff University, Cardiff, United Kingdom.,Division of Neuroscience, School of Biosciences, Cardiff University, Cardiff, United Kingdom
| | - Riccardo Brambilla
- Neuroscience and Mental Health Research Institute, Cardiff University, Cardiff, United Kingdom.,Division of Neuroscience, School of Biosciences, Cardiff University, Cardiff, United Kingdom
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Shahani N, Swarnkar S, Giovinazzo V, Morgenweck J, Bohn LM, Scharager-Tapia C, Pascal B, Martinez-Acedo P, Khare K, Subramaniam S. RasGRP1 promotes amphetamine-induced motor behavior through a Rhes interaction network ("Rhesactome") in the striatum. Sci Signal 2016; 9:ra111. [PMID: 27902448 PMCID: PMC5142824 DOI: 10.1126/scisignal.aaf6670] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The striatum of the brain coordinates motor function. Dopamine-related drugs may be therapeutic to patients with striatal neurodegeneration, such as Huntington's disease (HD) and Parkinson's disease (PD), but these drugs have unwanted side effects. In addition to stimulating the release of norepinephrine, amphetamines, which are used for narcolepsy and attention-deficit/hyperactivity disorder (ADHD), trigger dopamine release in the striatum. The guanosine triphosphatase Ras homolog enriched in the striatum (Rhes) inhibits dopaminergic signaling in the striatum, is implicated in HD and L-dopa-induced dyskinesia, and has a role in striatal motor control. We found that the guanine nucleotide exchange factor RasGRP1 inhibited Rhes-mediated control of striatal motor activity in mice. RasGRP1 stabilized Rhes, increasing its synaptic accumulation in the striatum. Whereas partially Rhes-deficient (Rhes+/-) mice had an enhanced locomotor response to amphetamine, this phenotype was attenuated by coincident depletion of RasGRP1. By proteomic analysis of striatal lysates from Rhes-heterozygous mice with wild-type or partial or complete knockout of Rasgrp1, we identified a diverse set of Rhes-interacting proteins, the "Rhesactome," and determined that RasGRP1 affected the composition of the amphetamine-induced Rhesactome, which included PDE2A (phosphodiesterase 2A; a protein associated with major depressive disorder), LRRC7 (leucine-rich repeat-containing 7; a protein associated with bipolar disorder and ADHD), and DLG2 (discs large homolog 2; a protein associated with chronic pain). Thus, this Rhes network provides insight into striatal effects of amphetamine and may aid the development of strategies to treat various neurological and psychological disorders associated with the striatal dysfunction.
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Affiliation(s)
- Neelam Shahani
- Department of Neuroscience, The Scripps Research Institute, Jupiter, FL 33458, USA
| | - Supriya Swarnkar
- Department of Neuroscience, The Scripps Research Institute, Jupiter, FL 33458, USA
| | - Vincenzo Giovinazzo
- Harriet L. Wilkes Honors College, Florida Atlantic University, Jupiter, FL 33458, USA
| | - Jenny Morgenweck
- Department of Molecular Therapeutics, The Scripps Research Institute, Jupiter, FL 33458, USA
| | - Laura M Bohn
- Department of Molecular Therapeutics, The Scripps Research Institute, Jupiter, FL 33458, USA
| | | | - Bruce Pascal
- Informatics Core, The Scripps Research Institute, Jupiter, FL 33458, USA
| | | | - Kshitij Khare
- Department of Statistics, University of Florida, Gainesville, FL 32611, USA
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Koskela M, Bäck S, Võikar V, Richie CT, Domanskyi A, Harvey BK, Airavaara M. Update of neurotrophic factors in neurobiology of addiction and future directions. Neurobiol Dis 2016; 97:189-200. [PMID: 27189755 DOI: 10.1016/j.nbd.2016.05.010] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Revised: 05/09/2016] [Accepted: 05/13/2016] [Indexed: 02/07/2023] Open
Abstract
Drug addiction is a chronic brain disease and drugs of abuse cause long lasting neuroadaptations. Addiction is characterized by the loss of control over drug use despite harmful consequences, and high rates of relapse even after long periods of abstinence. Neurotrophic factors (NTFs) are well known for their actions on neuronal survival in the peripheral nervous system. Moreover, NTFs have been shown to be involved in synaptic plasticity in the brain. Brain-derived neurotrophic factor (BDNF) and glial cell line-derived neurotrophic factor (GDNF) are two of the most studied NTFs and both of them have been reported to increase craving when administered into the mesocorticolimbic dopaminergic system after drug self-administration. Here we review recent data on BDNF and GDNF functions in addiction-related behavior and discuss them in relation to previous findings. Finally, we give an insight into how new technologies could aid in further elucidating the role of these factors in drug addiction.
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Affiliation(s)
- Maryna Koskela
- Institute of Biotechnology, P.O. Box 56, 00014, University of Helsinki, Finland
| | - Susanne Bäck
- Intramural Research Program, National Institute on Drug Abuse, NIH, Baltimore, MD, USA
| | - Vootele Võikar
- Neuroscience Center, P.O. Box 56, 00014, University of Helsinki, Helsinki, Finland
| | - Christopher T Richie
- Intramural Research Program, National Institute on Drug Abuse, NIH, Baltimore, MD, USA
| | - Andrii Domanskyi
- Institute of Biotechnology, P.O. Box 56, 00014, University of Helsinki, Finland
| | - Brandon K Harvey
- Intramural Research Program, National Institute on Drug Abuse, NIH, Baltimore, MD, USA
| | - Mikko Airavaara
- Institute of Biotechnology, P.O. Box 56, 00014, University of Helsinki, Finland.
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Dias VT, Trevizol F, Barcelos RC, Kunh FT, Roversi K, Roversi K, Schuster AJ, Pase CS, Golombieski R, Emanuelli T, Bürger ME. Lifelong consumption of trans fatty acids promotes striatal impairments on Na + /K + ATPase activity and BDNF mRNA expression in an animal model of mania. Brain Res Bull 2015; 118:78-81. [DOI: 10.1016/j.brainresbull.2015.09.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Revised: 09/14/2015] [Accepted: 09/17/2015] [Indexed: 11/24/2022]
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Cerri S, Greco R, Levandis G, Ghezzi C, Mangione AS, Fuzzati-Armentero MT, Bonizzi A, Avanzini MA, Maccario R, Blandini F. Intracarotid Infusion of Mesenchymal Stem Cells in an Animal Model of Parkinson's Disease, Focusing on Cell Distribution and Neuroprotective and Behavioral Effects. Stem Cells Transl Med 2015. [PMID: 26198165 DOI: 10.5966/sctm.2015-0023] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
UNLABELLED Mesenchymal stem cells (MSCs) have been proposed as a potential therapeutic tool for Parkinson's disease (PD) and systemic administration of these cells has been tested in preclinical and clinical studies. However, no information on survival and actual capacity of MSCs to reach the brain has been provided. In this study, we evaluated homing of intraarterially infused rat MSCs (rMSCs) in the brain of rats bearing a 6-hydroxydopamine (6-OHDA)-induced lesion of the nigrostriatal tract, to establish whether the toxin-induced damage is sufficient to grant MSC passage across the blood-brain barrier (BBB) or if a transient BBB disruption is necessary. The rMSC distribution in peripheral organs and the effects of cell infusion on neurodegenerative process and motor deficits were also investigated. rMSCs were infused 14 days after 6-OHDA injection. A hyperosmolar solution of mannitol was used to transiently permeabilize the BBB. Behavioral impairment was assessed by adjusting step test and response to apomorphine. Animals were sacrificed 7 and 28 days after cell infusion. Our work shows that appreciable delivery of rMSCs to the brain of 6-OHDA-lesioned animals can be obtained only after mannitol pretreatment. A notable percentage of infused cells accumulated in peripheral organs. Infusion of rMSCs did not modify the progression of 6-OHDA-induced damage or the motor impairment at the stepping test, but induced progressive normalization of the pathological response (contralateral turning) to apomorphine administration. These findings suggest that many aspects should be further investigated before considering any translation of MSC systemic administration into the clinical setting for PD treatment. SIGNIFICANCE This study demonstrates that mesenchymal stem cells infused through the carotid artery do not efficiently cross the blood-brain barrier in rats with a Parkinson's disease-like degeneration of nigrostriatal neurons, unless a permeabilizing agent (e.g., mannitol) is used. The infusion did not reduce the neuronal damage and associated motor impairment, but abolished the motor abnormalities these animals typically show when challenged with a dopaminergic agonist. Therefore, although arterially infused mesenchymal stem cells did not show neurorestorative effects in this study's Parkinson's disease model, they appeared to normalize the pathological responsiveness of striatal neurons to dopaminergic stimulation. This capability should be further explored in future studies.
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Affiliation(s)
- Silvia Cerri
- Laboratory of Functional Neurochemistry, Center for Research in Neurodegenerative Diseases, and Laboratory of Neurophysiology of Integrative Autonomic Systems, "C. Mondino" National Neurological Institute, Pavia, Italy; Immunology and Transplantation Laboratory/Cell Factory/Pediatric Hematology/Oncology Department, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Rosaria Greco
- Laboratory of Functional Neurochemistry, Center for Research in Neurodegenerative Diseases, and Laboratory of Neurophysiology of Integrative Autonomic Systems, "C. Mondino" National Neurological Institute, Pavia, Italy; Immunology and Transplantation Laboratory/Cell Factory/Pediatric Hematology/Oncology Department, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Giovanna Levandis
- Laboratory of Functional Neurochemistry, Center for Research in Neurodegenerative Diseases, and Laboratory of Neurophysiology of Integrative Autonomic Systems, "C. Mondino" National Neurological Institute, Pavia, Italy; Immunology and Transplantation Laboratory/Cell Factory/Pediatric Hematology/Oncology Department, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Cristina Ghezzi
- Laboratory of Functional Neurochemistry, Center for Research in Neurodegenerative Diseases, and Laboratory of Neurophysiology of Integrative Autonomic Systems, "C. Mondino" National Neurological Institute, Pavia, Italy; Immunology and Transplantation Laboratory/Cell Factory/Pediatric Hematology/Oncology Department, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Antonina Stefania Mangione
- Laboratory of Functional Neurochemistry, Center for Research in Neurodegenerative Diseases, and Laboratory of Neurophysiology of Integrative Autonomic Systems, "C. Mondino" National Neurological Institute, Pavia, Italy; Immunology and Transplantation Laboratory/Cell Factory/Pediatric Hematology/Oncology Department, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Marie-Therese Fuzzati-Armentero
- Laboratory of Functional Neurochemistry, Center for Research in Neurodegenerative Diseases, and Laboratory of Neurophysiology of Integrative Autonomic Systems, "C. Mondino" National Neurological Institute, Pavia, Italy; Immunology and Transplantation Laboratory/Cell Factory/Pediatric Hematology/Oncology Department, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Arianna Bonizzi
- Laboratory of Functional Neurochemistry, Center for Research in Neurodegenerative Diseases, and Laboratory of Neurophysiology of Integrative Autonomic Systems, "C. Mondino" National Neurological Institute, Pavia, Italy; Immunology and Transplantation Laboratory/Cell Factory/Pediatric Hematology/Oncology Department, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Maria Antonietta Avanzini
- Laboratory of Functional Neurochemistry, Center for Research in Neurodegenerative Diseases, and Laboratory of Neurophysiology of Integrative Autonomic Systems, "C. Mondino" National Neurological Institute, Pavia, Italy; Immunology and Transplantation Laboratory/Cell Factory/Pediatric Hematology/Oncology Department, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Rita Maccario
- Laboratory of Functional Neurochemistry, Center for Research in Neurodegenerative Diseases, and Laboratory of Neurophysiology of Integrative Autonomic Systems, "C. Mondino" National Neurological Institute, Pavia, Italy; Immunology and Transplantation Laboratory/Cell Factory/Pediatric Hematology/Oncology Department, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Fabio Blandini
- Laboratory of Functional Neurochemistry, Center for Research in Neurodegenerative Diseases, and Laboratory of Neurophysiology of Integrative Autonomic Systems, "C. Mondino" National Neurological Institute, Pavia, Italy; Immunology and Transplantation Laboratory/Cell Factory/Pediatric Hematology/Oncology Department, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
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Galinato MH, Orio L, Mandyam CD. Methamphetamine differentially affects BDNF and cell death factors in anatomically defined regions of the hippocampus. Neuroscience 2014; 286:97-108. [PMID: 25463524 DOI: 10.1016/j.neuroscience.2014.11.042] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2014] [Revised: 10/25/2014] [Accepted: 11/08/2014] [Indexed: 01/05/2023]
Abstract
Methamphetamine exposure reduces hippocampal long-term potentiation (LTP) and neurogenesis and these alterations partially contribute to hippocampal maladaptive plasticity. The potential mechanisms underlying methamphetamine-induced maladaptive plasticity were identified in the present study. Expression of brain-derived neurotrophic factor (BDNF; a regulator of LTP and neurogenesis), and its receptor tropomyosin-related kinase B (TrkB) were studied in the dorsal and ventral hippocampal tissue lysates in rats that intravenously self-administered methamphetamine in a limited access (1h/day) or extended access (6h/day) paradigm for 17days post baseline sessions. Extended access methamphetamine enhanced expression of BDNF with significant effects observed in the dorsal and ventral hippocampus. Methamphetamine-induced enhancements in BDNF expression were not associated with TrkB receptor activation as indicated by phospho (p)-TrkB-706 levels. Conversely, methamphetamine produced hypophosphorylation of N-methyl-d-aspartate (NMDA) receptor subunit 2B (GluN2B) at Tyr-1472 in the ventral hippocampus, indicating reduced receptor activation. In addition, methamphetamine enhanced expression of anti-apoptotic protein Bcl-2 and reduced pro-apoptotic protein Bax levels in the ventral hippocampus, suggesting a mechanism for reducing cell death. Analysis of Akt, a pro-survival kinase that suppresses apoptotic pathways and pAkt at Ser-473 demonstrated that extended access methamphetamine reduces Akt expression in the ventral hippocampus. These data reveal that alterations in Bcl-2 and Bax levels by methamphetamine were not associated with enhanced Akt expression. Given that hippocampal function and neurogenesis vary in a subregion-specific fashion, where dorsal hippocampus regulates spatial processing and has higher levels of neurogenesis, whereas ventral hippocampus regulates anxiety-related behaviors, these data suggest that methamphetamine self-administration initiates distinct allostatic changes in hippocampal subregions that may contribute to the altered synaptic activity in the hippocampus, which may underlie enhanced negative affective symptoms and perpetuation of the addiction cycle.
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Affiliation(s)
- M H Galinato
- Committee on the Neurobiology of Addictive Disorders, The Scripps Research Institute, La Jolla, CA 92037, USA; Department of Neurosciences, University of California San Diego, La Jolla, CA 92037, USA
| | - L Orio
- Departamento de Psicobiología, Facultad Psicología, Universidad Complutense de Madrid, Campus Somosaguas, 28223 Pozuelo de Alarcón, Madrid, Spain
| | - C D Mandyam
- Committee on the Neurobiology of Addictive Disorders, The Scripps Research Institute, La Jolla, CA 92037, USA; Department of Neurosciences, University of California San Diego, La Jolla, CA 92037, USA.
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Hutson PH, Tarazi FI, Madhoo M, Slawecki C, Patkar AA. Preclinical pharmacology of amphetamine: Implications for the treatment of neuropsychiatric disorders. Pharmacol Ther 2014; 143:253-64. [DOI: 10.1016/j.pharmthera.2014.03.005] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2013] [Accepted: 03/14/2014] [Indexed: 11/28/2022]
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11
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Ravenelle R, Santolucito HB, Byrnes EM, Byrnes JJ, Donaldson ST. Housing environment modulates physiological and behavioral responses to anxiogenic stimuli in trait anxiety male rats. Neuroscience 2014; 270:76-87. [PMID: 24713371 PMCID: PMC4047719 DOI: 10.1016/j.neuroscience.2014.03.060] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2014] [Revised: 03/12/2014] [Accepted: 03/28/2014] [Indexed: 11/27/2022]
Abstract
Environmental enrichment can modulate mild and chronic stress, responses to anxiogenic stimuli as well as drug vulnerability in a number of animal models. The current study was designed to examine the impact of postnatal environmental enrichment on selectively bred 4th generation high- (HAn) and low-anxiety (LAn) male rats. After weaning, animals were placed in isolated (IE), social (SE) and enriched environments (EE) (e.g., toys, wheels, ropes, changed weekly). We measured anxiety-like behavior (ALB) on the elevated plus maze (EPM; trial 1 at postnatal day (PND) 46, trial 2 at PND 63), amphetamine (AMPH) (0.5mg/kg, IP)-induced locomotor behavior, basal and post anxiogenic stimuli changes in (1) plasma corticosterone, (2) blood pressure and (3) core body temperature. Initially, animals showed consistent trait differences on EPM with HAn showing more ALB but after 40 days in select housing, HAn rats reared in an EE showed less ALB and diminished AMPH-induced activity compared to HAn animals housed in IE and SE. In the physiological tests, animals housed in EE showed elevated adrenocortical responses to forced novel object exposure but decreased body temperature and blood pressure changes after an air puff stressor. All animals reared in EE and SE had elevated brain-derived neurotrophic factor (BDNF)-positive cells in the central amygdala (CeA), CA1 and CA2 hippocampal regions and the caudate putamen, but these differences were most pronounced in HAn rats for CeA, CA1 and CA2. Overall, these findings suggest that environmental enrichment offers benefits for trait anxiety rats including a reduction in behavioral and physiological responses to anxiogenic stimuli and AMPH sensitivity, and these responses correlate with changes in BDNF expression in the central amygdala, hippocampus and the caudate putamen.
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Affiliation(s)
- R Ravenelle
- Department of Biological Sciences, Fordham University, Rose Hill Campus Bronx, NY 10458, United States
| | - H B Santolucito
- Developmental and Brain Sciences, Department of Psychology, University of Massachusetts Boston, Boston, MA 02125, United States
| | - E M Byrnes
- Department of Biomedical Sciences, Tufts Cummings School of Veterinary Medicine, Grafton, MA 01536, United States
| | - J J Byrnes
- Department of Biomedical Sciences, Tufts Cummings School of Veterinary Medicine, Grafton, MA 01536, United States
| | - S T Donaldson
- Developmental and Brain Sciences, Department of Psychology, University of Massachusetts Boston, Boston, MA 02125, United States.
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Ren Q, Zhang JC, Ma M, Fujita Y, Wu J, Hashimoto K. 7,8-Dihydroxyflavone, a TrkB agonist, attenuates behavioral abnormalities and neurotoxicity in mice after administration of methamphetamine. Psychopharmacology (Berl) 2014; 231:159-66. [PMID: 23934209 DOI: 10.1007/s00213-013-3221-7] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2013] [Accepted: 07/18/2013] [Indexed: 01/14/2023]
Abstract
RATIONALE It is widely recognized that methamphetamine (METH) induces behavioral abnormalities and dopaminergic neurotoxicity in the brain. Several lines of evidence suggest a role for brain-derived neurotrophic factor (BDNF) and its specific receptor, tropomyosin-related kinase (TrkB), in METH-induced behavioral abnormalities. OBJECTIVE In this study, we examined whether 7,8-dihydroxyflavone (7,8-DHF), a novel potent TrkB agonist, could attenuate behavioral abnormalities and dopaminergic neurotoxicity in mice after administration of METH. RESULTS Pretreatment with 7,8-DHF (3.0, 10, or 30 mg/kg), but not the inactive TrkB compound, 5,7-dihydroxyflavone (5,7-DHF) (30 mg/kg), attenuated hyperlocomotion in mice after a single administration of METH (3.0 mg/kg), in a dose-dependent manner. The development of behavioral sensitization after repeated administration of METH (3.0 mg/kg/day, once daily for 5 days) was significantly attenuated by pretreatment with 7,8-DHF (10 mg/kg). Furthermore, pretreatment and subsequent administration of 7,8-DHF (10 mg/kg) attenuated the reduction of dopamine transporter (DAT) in the striatum after repeated administration of METH (3.0 mg/kg × 3 at 3-hourly intervals). Treatment with ANA-12 (0.5 mg/kg), a potent TrkB antagonist, blocked the protective effects of 7,8-DHF on the METH-induced reduction of DAT in the striatum. Moreover, 7,8-DHF attenuated microglial activation in the striatum after repeated administration of METH. CONCLUSIONS These findings suggest that 7,8-DHF can ameliorate behavioral abnormalities as well as dopaminergic neurotoxicity in mice after administration of METH. It is likely, therefore, that TrkB agonists such as 7,8-DHF may prove to be potential therapeutic drugs for several symptoms associated with METH abuse in humans.
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Affiliation(s)
- Qian Ren
- Division of Clinical Neuroscience, Chiba University Center for Forensic Mental Health, 1-8-1 Inohana, Chiba, 260-8670, Japan
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Ren Q, Zhang JC, Fujita Y, Ma M, Wu J, Hashimoto K. Effects of TrkB agonist 7,8-dihydroxyflavone on sensory gating deficits in mice after administration of methamphetamine. Pharmacol Biochem Behav 2013; 106:124-7. [PMID: 23567202 DOI: 10.1016/j.pbb.2013.03.016] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/27/2012] [Revised: 03/21/2013] [Accepted: 03/29/2013] [Indexed: 12/31/2022]
Abstract
Several lines of evidence suggest that the brain-derived neurotrophic factor (BDNF)-tropomyosin-related kinase B (TrkB) signaling pathway plays a role in behavioral abnormalities observed after administration of psychostimulants, such as methamphetamine (METH). This study was undertaken to examine whether the potent TrkB agonist, 7,8-dihydroxyflavone (7,8-DHF) could improve prepulse inhibition (PPI) deficits in mice seen after a single dose of METH. Treatment with 7,8-DHF (3.0, 10 or 30 mg/kg) improved PPI deficits in mice associated with exposure to METH (3.0 mg/kg), in a dose dependent manner. Furthermore, co-administration of ANA-12 (0.5 mg/kg), a TrkB antagonist, significantly blocked the effects of 7,8-DHF (30 mg/kg) on METH-induced PPI deficits. In contrast, administration of 5,7-dihydroxyflavone (5,7-DHF: 30 mg/kg), an inactive TrkB ligand, did not affect METH-induced PPI deficits in mice. An in vivo microdialysis study in conscious mice showed that 7,8-DHF (30 mg/kg) significantly attenuated increased dopamine release in the striatum, after METH administration (3 mg/kg). This study suggests that 7,8-DHF can improve PPI deficits in these mice, through the inhibition of METH-induced dopamine release. Therefore, it is likely that TrkB agonists, such as 7,8-DHF, may constitute a novel class of therapeutic drugs for neuropsychiatric diseases such as METH-use disorder and schizophrenia.
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Affiliation(s)
- Qian Ren
- Division of Clinical Neuroscience, Chiba University Center for Forensic Mental Health, Chiba, Japan
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Abstract
This paper is the thirty-fourth consecutive installment of the annual review of research concerning the endogenous opioid system. It summarizes papers published during 2011 that studied the behavioral effects of molecular, pharmacological and genetic manipulation of opioid peptides, opioid receptors, opioid agonists and opioid antagonists. The particular topics that continue to be covered include the molecular-biochemical effects and neurochemical localization studies of endogenous opioids and their receptors related to behavior (Section 2), and the roles of these opioid peptides and receptors in pain and analgesia (Section 3); stress and social status (Section 4); tolerance and dependence (Section 5); learning and memory (Section 6); eating and drinking (Section 7); alcohol and drugs of abuse (Section 8); sexual activity and hormones, pregnancy, development and endocrinology (Section 9); mental illness and mood (Section 10); seizures and neurologic disorders (Section 11); electrical-related activity and neurophysiology (Section 12); general activity and locomotion (Section 13); gastrointestinal, renal and hepatic functions (Section 14); cardiovascular responses (Section 15); respiration (Section 16); and immunological responses (Section 17).
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Affiliation(s)
- Richard J Bodnar
- Department of Psychology and Neuropsychology Doctoral Sub-Program, Queens College, City University of New York, Flushing, NY 11367, United States.
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