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Kamel AS, Wahid A, Abdelkader NF, Ibrahim WW. Boosting amygdaloid GABAergic and neurotrophic machinery via dapagliflozin-enhanced LKB1/AMPK signaling in anxious demented rats. Life Sci 2022; 310:121002. [PMID: 36191679 DOI: 10.1016/j.lfs.2022.121002] [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: 08/11/2022] [Revised: 09/19/2022] [Accepted: 09/22/2022] [Indexed: 11/18/2022]
Abstract
Anxiety is a neuropsychiatric disturbance that is commonly manifested in various dementia forms involving Alzheimer's disease (AD). The mechanisms underlying AD-associated anxiety haven't clearly recognized the role of energy metabolism in anxiety represented by the amygdala's autophagic sensors; liver kinase B1 (LKB1)/adenosine monophosphate kinase (AMPK). Dapagliflozin (DAPA), a SGLT2 inhibitor, acts as an autophagic activator through LKB1 activation in several diseases including AD. Herein, the propitious yet undetected anxiolytic potential of DAPA as an autophagic enhancer was investigated in AD animal model with emphasis on amygdala's GABAergic neurotransmission and brain-derived neurotrophic factor (BDNF). Alzheimer's disease was induced by ovariectomy (OVX) along with seventy-days-D-galactose (D-Gal) administration (150 mg/kg/day, i.p). On the 43rd day of D-Gal injection, OVX/D-Gal-subjected rats received DAPA (1 mg/kg/day, p.o) alone or with dorsomorphin the AMPK inhibitor (DORSO, 25 μg/rat, i.v.). In the amygdala, LKB1/AMPK were activated by DAPA inducing GABAB2 receptor stimulation; an effect that was abrogated by DORSO. Dapagliflozin also replenished the amygdala GABA, NE, and 5-HT levels along with glutamate suppression. Moreover, DAPA triggered BDNF production with consequent activation of its receptor, TrkB through activating GABAB2-related downstream phospholipase C/diacylglycerol/protein kinase C (PLC/DAG/PKC) signaling. This may promote GABAA expression, verifying the crosstalk between GABAA and GABAB2. The DAPA's anxiolytic effect was visualized by improved behavioral traits in elevated plus maze together with amendment of amygdala' histopathological abnormalities. Thus, the present study highlighted DAPA's anxiolytic effect which was attributed to GABAB2 activation and its function to induce BDNF/TrkB and GABAA expression through PLC/DAG/PKC pathway in AMPK-dependent manner.
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Affiliation(s)
- Ahmed S Kamel
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Egypt
| | - Ahmed Wahid
- Department of Pharmaceutical Biochemistry, Faculty of Pharmacy, Alexandria University, Egypt
| | - Noha F Abdelkader
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Egypt.
| | - Weam W Ibrahim
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Egypt
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Ketamine administration ameliorates anesthesia and surgery‑induced cognitive dysfunction via activation of TRPV4 channel opening. Exp Ther Med 2022; 24:478. [PMID: 35761804 PMCID: PMC9214599 DOI: 10.3892/etm.2022.11405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Accepted: 05/16/2022] [Indexed: 11/05/2022] Open
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Targeting NRF2 in Type 2 diabetes mellitus and depression: Efficacy of natural and synthetic compounds. Eur J Pharmacol 2022; 925:174993. [PMID: 35513015 DOI: 10.1016/j.ejphar.2022.174993] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Revised: 03/31/2022] [Accepted: 04/28/2022] [Indexed: 12/18/2022]
Abstract
Evidence supports a strong bidirectional association between depression and Type 2 diabetes mellitus (T2DM). The harmful impact of oxidative stress and chronic inflammation on the development of both disorders is widely accepted. Nuclear factor erythroid 2-related factor 2 (NRF2) is a pertinent target in disease management owing to its reputation as the master regulator of antioxidant responses. NRF2 influences the expression of various cytoprotective phase 2 antioxidant genes, which is hampered in both depression and T2DM. Through interaction and crosstalk with several signaling pathways, NRF2 endeavors to contain the widespread oxidative damage and persistent inflammation involved in the pathophysiology of depression and T2DM. NRF2 promotes the neuroprotective and insulin-sensitizing properties of its upstream and downstream targets, thereby interrupting and preventing disease advancement. Standard antidepressant and antidiabetic drugs may be powerful against these disorders, but unfortunately, they come bearing distressing side effects. Therefore, exploiting the therapeutic potential of NRF2 activators presents an exciting opportunity to manage such bidirectional and comorbid conditions.
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Formolo DA, Cheng T, Yu J, Kranz GS, Yau SY. Central Adiponectin Signaling – A Metabolic Regulator in Support of Brain Plasticity. Brain Plast 2022; 8:79-96. [DOI: 10.3233/bpl-220138] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/22/2022] [Indexed: 12/18/2022] Open
Abstract
Brain plasticity and metabolism are tightly connected by a constant influx of peripheral glucose to the central nervous system in order to meet the high metabolic demands imposed by neuronal activity. Metabolic disturbances highly affect neuronal plasticity, which underlies the prevalent comorbidity between metabolic disorders, cognitive impairment, and mood dysfunction. Effective pro-cognitive and neuropsychiatric interventions, therefore, should consider the metabolic aspect of brain plasticity to achieve high effectiveness. The adipocyte-secreted hormone, adiponectin, is a metabolic regulator that crosses the blood-brain barrier and modulates neuronal activity in several brain regions, where it exerts neurotrophic and neuroprotective properties. Moreover, adiponectin has been shown to improve neuronal metabolism in different animal models, including obesity, diabetes, and Alzheimer’s disease. Here, we aim at linking the adiponectin’s neurotrophic and neuroprotective properties with its main role as a metabolic regulator and to summarize the possible mechanisms of action on improving brain plasticity via its role in regulating the intracellular energetic activity. Such properties suggest adiponectin signaling as a potential target to counteract the central metabolic disturbances and impaired neuronal plasticity underlying many neuropsychiatric disorders.
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Affiliation(s)
- Douglas A. Formolo
- Department of Rehabilitation Sciences, Faculty of Health and Social Sciences, Hong Kong Polytechnic University, Hung Hom, Hong Kong
- Mental Health Research Center (MHRC), Hong Kong Polytechnic University3Institute of future foods
- Research Institute for Smart Ageing (RISA), Hong Kong Polytechnic University
| | - Tong Cheng
- Department of Rehabilitation Sciences, Faculty of Health and Social Sciences, Hong Kong Polytechnic University, Hung Hom, Hong Kong
- Mental Health Research Center (MHRC), Hong Kong Polytechnic University3Institute of future foods
- Research Institute for Smart Ageing (RISA), Hong Kong Polytechnic University
| | - Jiasui Yu
- Department of Rehabilitation Sciences, Faculty of Health and Social Sciences, Hong Kong Polytechnic University, Hung Hom, Hong Kong
- Mental Health Research Center (MHRC), Hong Kong Polytechnic University3Institute of future foods
- Research Institute for Smart Ageing (RISA), Hong Kong Polytechnic University
| | - Georg S. Kranz
- Department of Rehabilitation Sciences, Faculty of Health and Social Sciences, Hong Kong Polytechnic University, Hung Hom, Hong Kong
- Department of Psychiatry and Psychotherapy, Medical University of Vienna, Austria
- The State Key Laboratory of Brain and Cognitive Sciences, The University of Hong Kong, Hong Kong, China
| | - Suk-Yu Yau
- Department of Rehabilitation Sciences, Faculty of Health and Social Sciences, Hong Kong Polytechnic University, Hung Hom, Hong Kong
- Mental Health Research Center (MHRC), Hong Kong Polytechnic University3Institute of future foods
- Research Institute for Smart Ageing (RISA), Hong Kong Polytechnic University
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Miao H, Yu K, Gao D, Lin X, Cao Y, Liu X, Qiao H, Li T. A Bibliometric Analysis of Research on Ketamine From 2001 to 2020. Front Mol Neurosci 2022; 15:839198. [PMID: 35283728 PMCID: PMC8908203 DOI: 10.3389/fnmol.2022.839198] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Accepted: 01/24/2022] [Indexed: 12/12/2022] Open
Abstract
Background Ketamine is an intravenous anesthetic with analgesic effects that has a rapid onset and short duration of action. Many studies have been conducted on the use of ketamine; however, the quantity and quality of such studies have not been reported. Therefore, we aimed to conduct a bibliometric analysis of research on ketamine from 2001 to 2020. Methods We used the Web of Science database to get publications on ketamine from January 2001 to December 2020. Various bibliographic information was collected, including the number of publications, year of publication, country of origin, journal name, research hotspots, citation count, and author information. Results A total of 5,192 articles were included in the analysis. The United States published the highest number of papers on ketamine and the United States participated in publishing the most papers and disclosure funds. The types of articles in clinical trials were cited more frequently. Most articles on ketamine were published in the journal Anesthesia and Analgesia. Furthermore, the antidepressant effect of ketamine has been a research hotspot for the last 20 years. Conclusion This study provided a comprehensive analysis of research on ketamine and highlighted the growing interest in ketamine and its antidepressant effects.
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Eacret D, Noreck J, Blendy J. Adenosine Monophosphate-activated Protein Kinase (AMPK) in serotonin neurons mediates select behaviors during protracted withdrawal from morphine in mice. Behav Brain Res 2022; 419:113688. [PMID: 34843742 PMCID: PMC8688336 DOI: 10.1016/j.bbr.2021.113688] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 11/11/2021] [Accepted: 11/23/2021] [Indexed: 01/02/2023]
Abstract
Serotonin neurotransmission has been implicated in behavior deficits that occur during protracted withdrawal from opioids. In addition, studies have highlighted multiple pathways whereby serotonin (5-HT) modulates energy homeostasis, however the underlying metabolic effects of opioid withdrawal have not been investigated. A key metabolic regulator that senses the energy status of the cell and regulates fuel availability is Adenosine Monophosphate-activated Protein Kinase (AMPK). To investigate the interaction between cellular metabolism and serotonin in modulating protracted abstinence from morphine, we depleted AMPK in serotonin neurons. Morphine exposure via drinking water generates dependence in these mice, and both wildtype and serotonergic AMPK knockout mice consume similar amounts of morphine with no changes in body weight. Serotonergic AMPK contributes to baseline differences in open field and social interaction behaviors and blocks abstinence induced reductions in immobility following morphine withdrawal in the tail suspension test. Lastly, morphine locomotor sensitization is blunted in mice lacking AMPK in serotonin neurons. Taken together, our results suggest serotonergic AMPK mediates both baseline and protracted morphine withdrawal-induced behaviors.
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Affiliation(s)
- D. Eacret
- Department of Systems Pharmacology and Translational Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - J. Noreck
- Department of Systems Pharmacology and Translational Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - J.A. Blendy
- Department of Systems Pharmacology and Translational Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA,Corresponding author , Phone: (215) 898-0730, Fax: (215) 573-2236
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Kang MJY, Hawken E, Vazquez GH. The Mechanisms Behind Rapid Antidepressant Effects of Ketamine: A Systematic Review With a Focus on Molecular Neuroplasticity. Front Psychiatry 2022; 13:860882. [PMID: 35546951 PMCID: PMC9082546 DOI: 10.3389/fpsyt.2022.860882] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2022] [Accepted: 03/18/2022] [Indexed: 12/25/2022] Open
Abstract
The mechanism of action underlying ketamine's rapid antidepressant effects in patients with depression, both suffering from major depressive disorder (MDD) and bipolar disorder (BD), including treatment resistant depression (TRD), remains unclear. Of the many speculated routes that ketamine may act through, restoring deficits in neuroplasticity may be the most parsimonious mechanism in both human patients and preclinical models of depression. Here, we conducted a literature search using PubMed for any reports of ketamine inducing neuroplasticity relevant to depression, to identify cellular and molecular events, relevant to neuroplasticity, immediately observed with rapid mood improvements in humans or antidepressant-like effects in animals. After screening reports using our inclusion/exclusion criteria, 139 publications with data from cell cultures, animal models, and patients with BD or MDD were included (registered on PROSPERO, ID: CRD42019123346). We found accumulating evidence to support that ketamine induces an increase in molecules involved in modulating neuroplasticity, and that these changes are paired with rapid antidepressant effects. Molecules or complexes of high interest include glutamate, AMPA receptors (AMPAR), mTOR, BDNF/TrkB, VGF, eEF2K, p70S6K, GSK-3, IGF2, Erk, and microRNAs. In summary, these studies suggest a robust relationship between improvements in mood, and ketamine-induced increases in molecular neuroplasticity, particularly regarding intracellular signaling molecules.
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Affiliation(s)
- Melody J Y Kang
- Center of Neuroscience Studies (CNS), Queen's University, Kingston, ON, Canada
| | - Emily Hawken
- Department of Psychiatry, Queen's University School of Medicine, Kingston, ON, Canada.,Providence Care Hospital, Kingston, ON, Canada
| | - Gustavo Hector Vazquez
- Center of Neuroscience Studies (CNS), Queen's University, Kingston, ON, Canada.,Department of Psychiatry, Queen's University School of Medicine, Kingston, ON, Canada.,Providence Care Hospital, Kingston, ON, Canada
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8
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Chuang HW, Wei IH, Li CT, Huang CC. Decreased efficacy of the ketamine and scopolamine-induced sustained antidepressant-like effects in rats receiving metformin. Pharmacol Rep 2021; 74:340-352. [PMID: 34850372 DOI: 10.1007/s43440-021-00342-z] [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: 05/02/2021] [Revised: 11/18/2021] [Accepted: 11/20/2021] [Indexed: 11/26/2022]
Abstract
BACKGROUND Metformin is the most widely used drug for treating type 2 diabetes mellitus (DM), which frequently co-occurs with depressive disorders. Thus, patients with depression are likely to receive metformin. Metformin activates AMP-activated kinase (AMPK), which inhibits mechanistic target of rapamycin complex 1 (mTORC1) signaling. mTORC1 activation is essential for the antidepressant effects of ketamine and scopolamine. Thus, we hypothesized that metformin may attenuate ketamine- or scopolamine-induced antidepressant efficacies by blocking their mTORC1 activation. METHODS We assessed the acute and sustained antidepressant-like actions of ketamine and scopolamine in male Sprague-Dawley rats subjected to the forced swim test with or without metformin pretreatment. The expressions of AMPK, mTORC1, and brain-derived neurotrophic factor (BDNF) in their prefrontal cortex were assessed. RESULTS Metformin (50 mg/kg) attenuated the sustained, but not acute, antidepressant-like effects of ketamine (10 mg/kg) and scopolamine (25 μg/kg). Although metformin reduced mTORC1 downstream activated P70S6K, it did not significantly alter mTORser2448 activation and even increased BDNF expression. Notably, ketamine, scopolamine, and metformin all exerted significant antidepressant-like actions, as evidenced by increased AMPK phosphorylation and BDNF expression. CONCLUSIONS Metformin-induced attenuation of sustained antidepressant-like effects are not directly dependent on AMPK-deactivated mTORC1. Our results indicate the complexity of interactions between AMPK, BDNF, and mTORC1. Further research, including mechanistic studies, is warranted to comprehensively evaluate the application of metformin in patients receiving mTORC1-based antidepressants.
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Affiliation(s)
- Han-Wen Chuang
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan
| | - I-Hua Wei
- Department of Anatomy, China Medical University, No.91, Hsueh-Shih Road, Taichung, 404333, Taiwan.
| | - Chun-Te Li
- Department of Medicine, China Medical University, Taichung, Taiwan
| | - Chih-Chia Huang
- Tsaotun Psychiatric Center, Ministry of Health and Welfare, No. 161, Yu-Pin Road Tsaotun Township, Nantou, 54249, Taiwan.
- Department of Psychiatry, China Medical University, Taichung, Taiwan.
- Department of Psychiatry, China Medical University Hospital, Taichung, Taiwan.
- Program in Translational Medicine, National Chung Hsing University, Taichung, Taiwan.
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9
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Peng FZ, Fan J, Ge TT, Liu QQ, Li BJ. Rapid anti-depressant-like effects of ketamine and other candidates: Molecular and cellular mechanisms. Cell Prolif 2020; 53:e12804. [PMID: 32266752 PMCID: PMC7260066 DOI: 10.1111/cpr.12804] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2020] [Revised: 03/10/2020] [Accepted: 03/11/2020] [Indexed: 12/27/2022] Open
Abstract
Major depressive disorder takes at least 3 weeks for clinical anti‐depressants, such as serotonin selective reuptake inhibitors, to take effect, and only one‐third of patients remit. Ketamine, a kind of anaesthetic, can alleviate symptoms of major depressive disorder patients in a short time and is reported to be effective to treatment‐resistant depression patients. The rapid and strong anti‐depressant‐like effects of ketamine cause wide concern. In addition to ketamine, caloric restriction and sleep deprivation also elicit similar rapid anti‐depressant‐like effects. However, mechanisms about the rapid anti‐depressant‐like effects remain unclear. Elucidating the mechanisms of rapid anti‐depressant effects is the key to finding new therapeutic targets and developing therapeutic patterns. Therefore, in this review we summarize potential molecular and cellular mechanisms of rapid anti‐depressant‐like effects based on the pre‐clinical and clinical evidence, trying to provide new insight into future therapy.
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Affiliation(s)
- Fan Zhen Peng
- Jilin Provincial Key Laboratory on Molecular and Chemical Genetics, The Second Hospital of Jilin University, Changchun, China
| | - Jie Fan
- Jilin Provincial Key Laboratory on Molecular and Chemical Genetics, The Second Hospital of Jilin University, Changchun, China
| | - Tong Tong Ge
- Jilin Provincial Key Laboratory on Molecular and Chemical Genetics, The Second Hospital of Jilin University, Changchun, China
| | - Qian Qian Liu
- Jilin Provincial Key Laboratory on Molecular and Chemical Genetics, The Second Hospital of Jilin University, Changchun, China
| | - Bing Jin Li
- Jilin Provincial Key Laboratory on Molecular and Chemical Genetics, The Second Hospital of Jilin University, Changchun, China
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Liang C, Li Y, Bai M, Huang Y, Yang H, Liu L, Wang S, Yu C, Song Z, Bao Y, Yi J, Sun L, Li Y. Hypericin attenuates nonalcoholic fatty liver disease and abnormal lipid metabolism via the PKA-mediated AMPK signaling pathway in vitro and in vivo. Pharmacol Res 2020; 153:104657. [PMID: 31982488 DOI: 10.1016/j.phrs.2020.104657] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 12/12/2019] [Accepted: 01/22/2020] [Indexed: 02/06/2023]
Abstract
Nonalcoholic fatty liver disease (NAFLD) is the most common liver disease worldwide and constitutes a major risk factor for progression to cirrhosis, liver failure and hepatocellular carcinoma (HCC). The occurrence of NAFLD is closely associated with abnormal lipid metabolism and implies a high risk of type 2 diabetes and cardiovascular disease. Therefore, specific and effective drugs for the prevention and treatment of NAFLD are necessary. Hypericin (HP) is one of the main active ingredients of Hypericum perforatum L., and we previously revealed its protective role in islet β-cells and its effects against type 2 diabetes. In this study, we aimed to explore the preventive and therapeutic effects of HP against NAFLD and the underlying mechanisms in vitro and in vivo. Here, we demonstrated that HP improved cell viability by reducing apoptosis and attenuated lipid accumulation in hepatocytes both in vitro and in vivovia attenuating oxidative stress, inhibiting lipogenesis and enhancing lipid oxidization. Thus, HP exhibited significant preventive and therapeutic effects against HFHS-induced NAFLD and dyslipidemia in mice. Furthermore, we demonstrated that HP directly bound to PKACα and activated PKA/AMPK signaling to elicit its effects against NAFLD, suggesting that PKACα is one of the drug targets of HP. In addition, the enhancing effect of HP on lipolysis in adipocytes through the activation of PKACα was also elucidated. Together, the conclusions indicated that HP, of which one of the targets is PKACα, has the potential to be used as a preventive or therapeutic drug against NAFLD or abnormal lipid metabolism in the future.
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Affiliation(s)
- Chen Liang
- National Engineering Laboratory for Druggable Gene and Protein Screening, Northeast Normal University, Changchun, 130024, China; Research Center of Agriculture and Medicine Gene Engineering of Ministry of Education, Northeast Normal University, Changchun, 130024, China
| | - Yan Li
- National Engineering Laboratory for Druggable Gene and Protein Screening, Northeast Normal University, Changchun, 130024, China
| | - Miao Bai
- National Engineering Laboratory for Druggable Gene and Protein Screening, Northeast Normal University, Changchun, 130024, China
| | - Yanxin Huang
- National Engineering Laboratory for Druggable Gene and Protein Screening, Northeast Normal University, Changchun, 130024, China
| | - Hang Yang
- National Engineering Laboratory for Druggable Gene and Protein Screening, Northeast Normal University, Changchun, 130024, China
| | - Lei Liu
- Research Center of Agriculture and Medicine Gene Engineering of Ministry of Education, Northeast Normal University, Changchun, 130024, China
| | - Shuyue Wang
- Research Center of Agriculture and Medicine Gene Engineering of Ministry of Education, Northeast Normal University, Changchun, 130024, China
| | - Chunlei Yu
- National Engineering Laboratory for Druggable Gene and Protein Screening, Northeast Normal University, Changchun, 130024, China
| | - Zhenbo Song
- Research Center of Agriculture and Medicine Gene Engineering of Ministry of Education, Northeast Normal University, Changchun, 130024, China
| | - Yongli Bao
- National Engineering Laboratory for Druggable Gene and Protein Screening, Northeast Normal University, Changchun, 130024, China
| | - Jingwen Yi
- Research Center of Agriculture and Medicine Gene Engineering of Ministry of Education, Northeast Normal University, Changchun, 130024, China
| | - Luguo Sun
- National Engineering Laboratory for Druggable Gene and Protein Screening, Northeast Normal University, Changchun, 130024, China.
| | - Yuxin Li
- Research Center of Agriculture and Medicine Gene Engineering of Ministry of Education, Northeast Normal University, Changchun, 130024, China.
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Robertson OD, Coronado NG, Sethi R, Berk M, Dodd S. Putative neuroprotective pharmacotherapies to target the staged progression of mental illness. Early Interv Psychiatry 2019; 13:1032-1049. [PMID: 30690898 DOI: 10.1111/eip.12775] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Accepted: 12/26/2018] [Indexed: 12/22/2022]
Abstract
AIM Neuropsychiatric disorders including depression, bipolar and schizophrenia frequently exhibit a neuroprogressive course from prodrome to chronicity. There are a range of agents exhibiting capacity to attenuate biological mechanisms associated with neuroprogression. This review will update the evidence for putative neuroprotective agents including clinical efficacy, mechanisms of action and limitations in current assessment tools, and identify novel agents with neuroprotective potential. METHOD Data for this review were sourced from online databases PUBMED, Embase and Web of Science. Only data published since 2012 were included in this review, no data were excluded based on language or publication origin. RESULTS Each of the agents reviewed inhibit one or multiple pathways of neuroprogression including: inflammatory gene expression and cytokine release, oxidative and nitrosative stress, mitochondrial dysfunction, neurotrophin dysregulation and apoptotic signalling. Some demonstrate clinical efficacy in preventing neural damage or loss, relapse or cognitive/functional decline. Agents include: the psychotropic medications lithium, second generation antipsychotics and antidepressants; other pharmacological agents such as minocycline, aspirin, cyclooxygenase-2 inhibitors, statins, ketamine and alpha-2-delta ligands; and others such as erythropoietin, oestrogen, leptin, N-acetylcysteine, curcumin, melatonin and ebselen. CONCLUSIONS Signals of evidence of clinical neuroprotection are evident for a number of candidate agents. Adjunctive use of multiple agents may present a viable avenue to clinical realization of neuroprotection. Definitive prospective studies of neuroprotection with multimodal assessment tools are required.
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Affiliation(s)
- Oliver D Robertson
- IMPACT Strategic Research Centre, School of Medicine, Deakin University, Geelong, Victoria, Australia.,Mental Health, Drugs and Alcohol Services, University Hospital Geelong, Barwon Health, Geelong, Victoria, Australia
| | - Nieves G Coronado
- Unidad de Gestión Clinica Salud Mental, Hospital Universitario Virgen del Rocio, Sevilla, Spain
| | - Rickinder Sethi
- Department of Psychiatry, Western University, London, Ontario, Canada
| | - Michael Berk
- IMPACT Strategic Research Centre, School of Medicine, Deakin University, Geelong, Victoria, Australia.,Mental Health, Drugs and Alcohol Services, University Hospital Geelong, Barwon Health, Geelong, Victoria, Australia.,Department of Psychiatry, The University of Melbourne, Parkville, Victoria, Australia.,Mood Disorders Research Program, Orygen, the National Centre of Excellence in Youth Mental Health, Parkville, Victoria, Australia.,Department of Psychiatry, Florey Institute of Neuroscience and Mental Health, Parkville, Victoria, Australia
| | - Seetal Dodd
- IMPACT Strategic Research Centre, School of Medicine, Deakin University, Geelong, Victoria, Australia.,Mental Health, Drugs and Alcohol Services, University Hospital Geelong, Barwon Health, Geelong, Victoria, Australia.,Department of Psychiatry, The University of Melbourne, Parkville, Victoria, Australia.,Mood Disorders Research Program, Orygen, the National Centre of Excellence in Youth Mental Health, Parkville, Victoria, Australia
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Finley J. Cellular stress and AMPK links metformin and diverse compounds with accelerated emergence from anesthesia and potential recovery from disorders of consciousness. Med Hypotheses 2019; 124:42-52. [PMID: 30798915 DOI: 10.1016/j.mehy.2019.01.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2018] [Accepted: 01/19/2019] [Indexed: 01/23/2023]
Abstract
The neural correlates of consciousness and the mechanisms by which general anesthesia (GA) modulate such correlates to induce loss of consciousness (LOC) has been described as one of the biggest mysteries of modern medicine. Several cellular targets and neural circuits have been identified that play a critical role in LOC induced by GA, including the GABAA receptor and ascending arousal nuclei located in the basal forebrain, hypothalamus, and brain stem. General anesthetics (GAs) including propofol and inhalational agents induce LOC in part by potentiating chloride influx through the GABAA receptor, leading to neural inhibition and LOC. Interestingly, nearly all GAs used clinically may also induce paradoxical excitation, a phenomenon in which GAs promote neuronal excitation at low doses before inducing unconsciousness. Additionally, emergence from GA, a passive process that occurs after anesthetic removal, is associated with lower anesthetic concentrations in the brain compared to doses associated with induction of GA. AMPK, an evolutionarily conserved kinase activated by cellular stress (e.g. increases in calcium [Ca2+] and/or reactive oxygen species [ROS], etc.) increases lifespan and healthspan in several model organisms. AMPK is located throughout the mammalian brain, including in neurons of the thalamus, hypothalamus, and striatum as well as in pyramidal neurons in the hippocampus and cortex. Increases in ROS and Ca2+ play critical roles in neuronal excitation and glutamate, the primary excitatory neurotransmitter in the human brain, activates AMPK in cortical neurons. Nearly every neurotransmitter released from ascending arousal circuits that promote wakefulness, arousal, and consciousness activates AMPK, including acetylcholine, histamine, orexin-A, dopamine, and norepinephrine. Several GAs that are commonly used to induce LOC in human patients also activate AMPK (e.g. propofol, sevoflurane, isoflurane, dexmedetomidine, ketamine, midazolam). Various compounds that accelerate emergence from anesthesia, thus mitigating problematic effects associated with delayed emergence such as delirium, also activate AMPK (e.g. nicotine, caffeine, forskolin, carbachol). GAs and neurotransmitters also act as preconditioning agents and the GABAA receptor inhibitor bicuculline, which reverses propofol anesthesia, also activates AMPK in cortical neurons. We propose the novel hypothesis that cellular stress-induced AMPK activation links wakefulness, arousal, and consciousness with paradoxical excitation and accelerated emergence from anesthesia. Because AMPK activators including metformin and nicotine promote proliferation and differentiation of neural stem cells located in the subventricular zone and the dentate gyrus, AMPK activation may also enhance brain repair and promote potential recovery from disorders of consciousness (i.e. minimally conscious state, vegetative state, coma).
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Østergaard L, Jørgensen MB, Knudsen GM. Low on energy? An energy supply-demand perspective on stress and depression. Neurosci Biobehav Rev 2018; 94:248-270. [DOI: 10.1016/j.neubiorev.2018.08.007] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Revised: 07/09/2018] [Accepted: 08/13/2018] [Indexed: 12/17/2022]
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Acute low-dose ketamine produces a rapid and robust increase in plasma BDNF without altering brain BDNF concentrations. Drug Deliv Transl Res 2018; 8:780-786. [PMID: 29322484 DOI: 10.1007/s13346-017-0476-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Peripheral BDNF changes after ketamine administration have been proposed as a biomarker for brain BDNF changes. However, published data are conflicting and come from studies in paired animal groups. This study determined the time course of plasma BDNF concentrations following the administration of a single 10 mg/kg dose of ketamine by different routes of administration in rats. Brain BDNF concentrations in prefrontal cortex, hippocampus and cortex were measured in the same animals. Ketamine administration resulted in a rapid and robust increase in plasma BDNF concentrations that were sustained for 240 min. In contrast, there were no changes in brain BDNF concentrations in prefrontal cortex, hippocampus or cortex and there were no correlations between peripheral and central BDNF concentrations. These data suggest that peripheral BDNF is unlikely to be a useful biomarker of acute central BDNF changes following ketamine.
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Phillips C, Fahimi A. Immune and Neuroprotective Effects of Physical Activity on the Brain in Depression. Front Neurosci 2018; 12:498. [PMID: 30093853 PMCID: PMC6070639 DOI: 10.3389/fnins.2018.00498] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Accepted: 07/03/2018] [Indexed: 12/13/2022] Open
Abstract
Physical activity-a lifestyle factor that is associated with immune function, neuroprotection, and energy metabolism-modulates the cellular and molecular processes in the brain that are vital for emotional and cognitive health, collective mechanisms that can go awry in depression. Physical activity optimizes the stress response, neurotransmitter level and function (e.g., serotonergic, noradrenergic, dopaminergic, and glutamatergic), myokine production (e.g., interleukin-6), transcription factor levels and correlates [e.g., peroxisome proliferator-activated receptor C coactivator-1α [PGC-1α], mitochondrial density, nitric oxide pathway activity, Ca2+ signaling, reactive oxygen specie production, and AMP-activated protein kinase [AMPK] activity], kynurenine metabolites, glucose regulation, astrocytic health, and growth factors (e.g., brain-derived neurotrophic factor). Dysregulation of these interrelated processes can effectuate depression, a chronic mental illness that affects millions of individuals worldwide. Although the biogenic amine model has provided some clinical utility in understanding chronic depression, a need remains to better understand the interrelated mechanisms that contribute to immune dysfunction and the means by which various therapeutics mitigate them. Fortunately, convergent evidence suggests that physical activity improves emotional and cognitive function in persons with depression, particularly in those with comorbid inflammation. Accordingly, the aims of this review are to (1) underscore the link between inflammatory correlates and depression, (2) explicate immuno-neuroendocrine foundations, (3) elucidate evidence of neurotransmitter and cytokine crosstalk in depressive pathobiology, (4) determine the immunomodulatory effects of physical activity in depression, (5) examine protocols used to effectuate the positive effects of physical activity in depression, and (6) highlight implications for clinicians and scientists. It is our contention that a deeper understanding of the mechanisms by which inflammation contributes to the pathobiology of depression will translate to novel and more effective treatments, particularly by identifying relevant patient populations that can benefit from immune-based therapies within the context of personalized medicine.
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Affiliation(s)
- Cristy Phillips
- Physical Therapy, Arkansas State University, Jonesboro, AR, United States
- Physical Therapy, University of Tennessee Health Science Center, Memphis, TN, United States
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Zong J, Liao X, Ren B, Wang Z. The antidepressant effects of rosiglitazone on rats with depression induced by neuropathic pain. Life Sci 2018; 203:315-322. [DOI: 10.1016/j.lfs.2018.04.057] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Revised: 04/23/2018] [Accepted: 04/30/2018] [Indexed: 12/22/2022]
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Finley J. Transposable elements, placental development, and oocyte activation: Cellular stress and AMPK links jumping genes with the creation of human life. Med Hypotheses 2018; 118:44-54. [PMID: 30037614 DOI: 10.1016/j.mehy.2018.05.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Accepted: 05/18/2018] [Indexed: 12/16/2022]
Abstract
Transposable elements (TEs), also known as "jumping genes", are DNA sequences first described by Nobel laureate Barbara McClintock that comprise nearly half of the human genome and are able to transpose or move from one genomic location to another. As McClintock also noted that a genome "shock" or stress may induce TE activation and transposition, accumulating evidence suggests that cellular stress (e.g. mediated by increases in intracellular reactive oxygen species [ROS] and calcium [Ca2+], etc.) induces TE mobilization in several model organisms and L1s (a member of the retrotransposon class of TEs) are active and capable of retrotransposition in human oocytes, human sperm, and in human neural progenitor cells. Cellular stress also plays a critical role in human placental development, with cytotrophoblast (CTB) differentiation leading to the formation of the syncytiotrophoblast (STB), a cellular layer that facilitates nutrient and gas exchange between the mother and the fetus. Syncytin-1, a protein that promotes fusion of CTB cells and is necessary for STB formation, and its receptor is found in human sperm and human oocytes, respectively, and increases in ROS and Ca2+ promote trophoblast differentiation and syncytin-1 expression. Cellular stress is also essential in promoting human oocyte maturation and activation which, similar to TE mobilization, can be induced by compounds that increase intracellular Ca2+ and ROS levels. AMPK is a master metabolic regulator activated by increases in ROS, Ca2+, and/or an AMP(ADP)/ATP ratio increase, etc. as well as compounds that induce L1 mobilization in human cells. AMPK knockdown inhibits trophoblast differentiation and AMPK-activating compounds that promote L1 mobility also enhance trophoblast differentiation. Cellular stressors that induce TE mobilization (e.g. heat shock) also promote oocyte maturation in an AMPK-dependent manner and the antibiotic ionomycin activates AMPK, promotes TE activation, and induces human oocyte activation, producing normal, healthy children. Metformin promotes AMPK-dependent telomerase activation (critical for telomere maintenance) and induces activation of the endonuclease RAG1 (promotes DNA cleavage and transposition) via AMPK. Both RAG1 and telomerase are derived from TEs. It is our hypothesis that cellular stress and AMPK links TE activation and transposition with placental development and oocyte activation, facilitating both human genome evolution and the creation of all human life. We also propose the novel observation that various cellular stress-inducing compounds (e.g. metformin, resveratrol, etc.) may facilitate beneficial TE activation and transposition and enhance fertilization and embryological development through a common mechanism of AMPK activation.
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Sattar Y, Wilson J, Khan AM, Adnan M, Azzopardi Larios D, Shrestha S, Rahman Q, Mansuri Z, Hassan A, Patel NB, Tariq N, Latchana S, Lopez Pantoja SC, Vargas S, Shaikh NA, Syed F, Mittal D, Rumesa F. A Review of the Mechanism of Antagonism of N-methyl-D-aspartate Receptor by Ketamine in Treatment-resistant Depression. Cureus 2018; 10:e2652. [PMID: 30034974 PMCID: PMC6051558 DOI: 10.7759/cureus.2652] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Accepted: 05/18/2018] [Indexed: 12/19/2022] Open
Abstract
The biochemical processes involved in depression go beyond serotonin, norepinephrine, and dopamine. The N-methyl-D-aspartate (NMDA) receptor has a major role in the neurophysiology of depression. Ketamine, one of the prototypical NMDA antagonists, works rapidly in controlling depressive symptoms, including acutely suicidal behavior, by just a single injection. Ketamine may rapidly increase the glutamate levels and lead to structural neuronal changes. Increased neuronal dendritic growth may contribute to synaptogenesis and an increase in brain-derived neurotrophic factor (BDNF). Activation of the mechanistic target of rapamycin (mTOR), as well as increased levels of BDNF, may increase long-term potentiation and result in an improvement in the symptoms of depression. The mechanisms of ketamine's proposed effect as an off-label treatment for resistant depression are outlined in this paper.
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Affiliation(s)
- Yasar Sattar
- Research Assistant, Kings County Hospital Center, New York, USA
| | - John Wilson
- Adult Psychiatry, SUNY Downstate Medical Center
| | - Ali M Khan
- Psychiatry Resident, University of Texas Rio Grande Valley, Harlingen, Texas, USA
| | - Mahwish Adnan
- Center for Addiction and Mental Health, University of Toronto, toronto, CAN
| | | | | | | | - Zeeshan Mansuri
- Psychiatry, Texas Tech University Health Sciences Center at Odessa/permian Basin
| | - Ali Hassan
- Medical Graduate, American University of Antigua
| | | | | | | | | | - Sadiasept Vargas
- Department of Medicine, Instituto Tecnológico De Santo Domingo, Santo Domingo, DOM
| | | | - Fawaduzzaman Syed
- Internal Medicine, Sindh Medical College, Dow University of Health Sciences, Chicago, USA
| | - Daaman Mittal
- Pediatrics, Punjab Institute of Medical Sciences, ludhiana, IND
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Amare AT, Schubert KO, Klingler-Hoffmann M, Cohen-Woods S, Baune BT. The genetic overlap between mood disorders and cardiometabolic diseases: a systematic review of genome wide and candidate gene studies. Transl Psychiatry 2017; 7:e1007. [PMID: 28117839 PMCID: PMC5545727 DOI: 10.1038/tp.2016.261] [Citation(s) in RCA: 209] [Impact Index Per Article: 29.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Revised: 10/21/2016] [Accepted: 10/31/2016] [Indexed: 12/11/2022] Open
Abstract
Meta-analyses of genome-wide association studies (meta-GWASs) and candidate gene studies have identified genetic variants associated with cardiovascular diseases, metabolic diseases and mood disorders. Although previous efforts were successful for individual disease conditions (single disease), limited information exists on shared genetic risk between these disorders. This article presents a detailed review and analysis of cardiometabolic diseases risk (CMD-R) genes that are also associated with mood disorders. First, we reviewed meta-GWASs published until January 2016, for the diseases 'type 2 diabetes, coronary artery disease, hypertension' and/or for the risk factors 'blood pressure, obesity, plasma lipid levels, insulin and glucose related traits'. We then searched the literature for published associations of these CMD-R genes with mood disorders. We considered studies that reported a significant association of at least one of the CMD-R genes and 'depression' or 'depressive disorder' or 'depressive symptoms' or 'bipolar disorder' or 'lithium treatment response in bipolar disorder', or 'serotonin reuptake inhibitors treatment response in major depression'. Our review revealed 24 potential pleiotropic genes that are likely to be shared between mood disorders and CMD-Rs. These genes include MTHFR, CACNA1D, CACNB2, GNAS, ADRB1, NCAN, REST, FTO, POMC, BDNF, CREB, ITIH4, LEP, GSK3B, SLC18A1, TLR4, PPP1R1B, APOE, CRY2, HTR1A, ADRA2A, TCF7L2, MTNR1B and IGF1. A pathway analysis of these genes revealed significant pathways: corticotrophin-releasing hormone signaling, AMPK signaling, cAMP-mediated or G-protein coupled receptor signaling, axonal guidance signaling, serotonin or dopamine receptors signaling, dopamine-DARPP32 feedback in cAMP signaling, circadian rhythm signaling and leptin signaling. Our review provides insights into the shared biological mechanisms of mood disorders and cardiometabolic diseases.
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Affiliation(s)
- A T Amare
- Discipline of Psychiatry, School of Medicine, The University of Adelaide, Adelaide, SA, Australia
| | - K O Schubert
- Discipline of Psychiatry, School of Medicine, The University of Adelaide, Adelaide, SA, Australia,Northern Adelaide Local Health Network, Mental Health Services, Adelaide, SA, Australia
| | - M Klingler-Hoffmann
- Adelaide Proteomics Centre, School of Biological Sciences, The University of Adelaide, Adelaide, SA, Australia
| | - S Cohen-Woods
- School of Psychology, Faculty of Social and Behavioural Sciences, Flinders University, Adelaide, SA, Australia
| | - B T Baune
- Discipline of Psychiatry, School of Medicine, The University of Adelaide, Adelaide, SA, Australia,Discipline of Psychiatry, School of Medicine, The University of Adelaide, North Terrace, Adelaide, SA 5005, Australia. E-mail:
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Jang S, Kim H, Jeong J, Lee SK, Kim EW, Park M, Kim CH, Lee JE, Namkoong K, Kim E. Blunted response of hippocampal AMPK associated with reduced neurogenesis in older versus younger mice. Prog Neuropsychopharmacol Biol Psychiatry 2016; 71:57-65. [PMID: 27343360 DOI: 10.1016/j.pnpbp.2016.06.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Revised: 06/16/2016] [Accepted: 06/21/2016] [Indexed: 01/17/2023]
Abstract
The rate of hippocampal neurogenesis declines with aging. This is partly explained by decreased neural responsiveness to various cues stimulating metabolism. AMP-activated protein kinase (AMPK), a pivotal enzyme regulating energy homeostasis in response to metabolic demands, showed the diminished sensitivity in peripheral tissues during aging. AMPK is also known to be involved in neurogenesis. We aimed to see whether AMPK reactivity is also blunted in the aged hippocampus, and thus is associated with aging-related change in neurogenesis. Following subchronic (7days) intraperitoneal and acute intracerebroventricular (i.c.v.) administration of either 5-aminoimidazole-4-carboxamide ribonucleoside (AICAR; AMPK activator) or saline (sham) to young (16-week-old) and old (72-week-old) mice, we measured changes in AMPK activity, brain-derived neurotrophic factor (BDNF) expression or neurogenesis in the hippocampus. AICAR-induced changes in AMPK activity were observed in the hippocampus of young mice after acute i.c.v. injection. However, neither subchronic nor acute treatment induced significant changes in AMPK activity in old mice. Intriguingly, directions of AICAR-induced changes in AMPK activity were opposite between the hippocampus (decrease) and skeletal muscle (increase). ATP levels were inversely correlated with hippocampal AMPK activity, suggesting that the higher energy levels achieved by AICAR treatment might deactivate neuronal AMPK in young mice. The blunted response of AMPK to AICAR in old age was also indicated by the observations that the levels of neurogenesis and BDNF expression were significantly changed only in young mice upon AICAR treatment. Our findings suggest that the blunted response of neuronal AMPK in old age might be responsible for aging-associated decline in neurogenesis. Therefore, in addition to activation of AMPK, recovering its sensitivity may be necessary to enhance hippocampal neurogenesis in old age.
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Affiliation(s)
- Sooah Jang
- Department of Psychiatry, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea; Institute of Behavioral Science in Medicine, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea.
| | - Hyunjeong Kim
- Department of Psychiatry, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea; Brain Korea 21 Plus Project for Medical Science, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea.
| | - Jihyeon Jeong
- Department of Psychiatry, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea; Brain Korea 21 Plus Project for Medical Science, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea.
| | - Su Kyoung Lee
- Department of Psychiatry, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea.
| | - Eun Woo Kim
- Department of Psychiatry, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea; Brain Korea 21 Plus Project for Medical Science, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea.
| | - Minsun Park
- Department of Psychiatry, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea.
| | - Chul Hoon Kim
- Department of Psychiatry, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea; Department of Pharmacology,Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea; Brain Korea 21 Plus Project for Medical Science, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea.
| | - Jong Eun Lee
- Department of Anatomy,Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea; Brain Korea 21 Plus Project for Medical Science, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea.
| | - Kee Namkoong
- Department of Psychiatry, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea; Institute of Behavioral Science in Medicine, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea.
| | - Eosu Kim
- Department of Psychiatry, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea; Institute of Behavioral Science in Medicine, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea; Brain Korea 21 Plus Project for Medical Science, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea.
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Lasič E, Rituper B, Jorgačevski J, Kreft M, Stenovec M, Zorec R. Subanesthetic doses of ketamine stabilize the fusion pore in a narrow flickering state in astrocytes. J Neurochem 2016; 138:909-17. [DOI: 10.1111/jnc.13715] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Revised: 06/08/2016] [Accepted: 06/17/2016] [Indexed: 12/27/2022]
Affiliation(s)
- Eva Lasič
- Laboratory of Neuroendocrinology-Molecular Cell Physiology; Institute of Pathophysiology; Faculty of Medicine; University of Ljubljana; Ljubljana Slovenia
| | - Boštjan Rituper
- Laboratory of Neuroendocrinology-Molecular Cell Physiology; Institute of Pathophysiology; Faculty of Medicine; University of Ljubljana; Ljubljana Slovenia
| | - Jernej Jorgačevski
- Laboratory of Neuroendocrinology-Molecular Cell Physiology; Institute of Pathophysiology; Faculty of Medicine; University of Ljubljana; Ljubljana Slovenia
- Celica BIOMEDICAL; Ljubljana Slovenia
| | - Marko Kreft
- Laboratory of Neuroendocrinology-Molecular Cell Physiology; Institute of Pathophysiology; Faculty of Medicine; University of Ljubljana; Ljubljana Slovenia
- Celica BIOMEDICAL; Ljubljana Slovenia
- Biotechnical Faculty; University of Ljubljana; Ljubljana Slovenia
| | - Matjaž Stenovec
- Laboratory of Neuroendocrinology-Molecular Cell Physiology; Institute of Pathophysiology; Faculty of Medicine; University of Ljubljana; Ljubljana Slovenia
- Celica BIOMEDICAL; Ljubljana Slovenia
| | - Robert Zorec
- Laboratory of Neuroendocrinology-Molecular Cell Physiology; Institute of Pathophysiology; Faculty of Medicine; University of Ljubljana; Ljubljana Slovenia
- Celica BIOMEDICAL; Ljubljana Slovenia
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Kim DM, Leem YH. Chronic stress-induced memory deficits are reversed by regular exercise via AMPK-mediated BDNF induction. Neuroscience 2016; 324:271-85. [PMID: 26975895 DOI: 10.1016/j.neuroscience.2016.03.019] [Citation(s) in RCA: 80] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Revised: 03/07/2016] [Accepted: 03/07/2016] [Indexed: 01/30/2023]
Abstract
Chronic stress has a detrimental effect on neurological insults, psychiatric deficits, and cognitive impairment. In the current study, chronic stress was shown to impair learning and memory functions, in addition to reducing in hippocampal Adenosine monophosphate-activated protein kinase (AMPK) activity. Similar reductions were also observed for brain-derived neurotrophic factor (BDNF), synaptophysin, and post-synaptic density-95 (PSD-95) levels, all of which was counter-regulated by a regime of regular and prolonged exercise. A 21-day restraint stress regimen (6 h/day) produced learning and memory deficits, including reduced alternation in the Y-maze and decreased memory retention in the water maze test. These effects were reversed post-administration by a 3-week regime of treadmill running (19 m/min, 1 h/day, 6 days/week). In hippocampal primary culture, phosphorylated-AMPK (phospho-AMPK) and BDNF levels were enhanced in a dose-dependent manner by 5-amimoimidazole-4-carboxamide riboside (AICAR) treatment, and AICAR-treated increase was blocked by Compound C. A 7-day period of AICAR intraperitoneal injections enhanced alternation in the Y-maze test and reduced escape latency in water maze test, along with enhanced phospho-AMPK and BDNF levels in the hippocampus. The intraperitoneal injection of Compound C every 4 days during exercise intervention diminished exercise-induced enhancement of memory improvement during the water maze test in chronically stressed mice. Also, chronic stress reduced hippocampal neurogenesis (lower Ki-67- and doublecortin-positive cells) and mRNA levels of BDNF, synaptophysin, and PSD-95. Our results suggest that regular and prolonged exercise can alleviate chronic stress-induced hippocampal-dependent memory deficits. Hippocampal AMPK-engaged BDNF induction is at least in part required for exercise-induced protection against chronic stress.
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Affiliation(s)
- D-M Kim
- Department of Society of Sports & Leisure Studies, Wonkwang University, 460 Iksandea-ro, Iksan, Jeonbuk, Republic of Korea
| | - Y-H Leem
- Department of Molecular Medicine and TIDRC, School of Medicine, Ewha Women's University, Seoul 158-710, Republic of Korea.
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Linking Mitochondria to Synapses: New Insights for Stress-Related Neuropsychiatric Disorders. Neural Plast 2016; 2016:3985063. [PMID: 26885402 PMCID: PMC4738951 DOI: 10.1155/2016/3985063] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2015] [Accepted: 11/09/2015] [Indexed: 12/31/2022] Open
Abstract
The brain evolved cellular mechanisms for adapting synaptic function to energy supply. This is particularly evident when homeostasis is challenged by stress. Signaling loops between the mitochondria and synapses scale neuronal connectivity with bioenergetics capacity. A biphasic “inverted U shape” response to the stress hormone glucocorticoids is demonstrated in mitochondria and at synapses, modulating neural plasticity and physiological responses. Low dose enhances neurotransmission, synaptic growth, mitochondrial functions, learning, and memory whereas chronic, higher doses produce inhibition of these functions. The range of physiological effects by stress and glucocorticoid depends on the dose, duration, and context at exposure. These criteria are met by neuronal activity and the circadian, stress-sensitive and ultradian, stress-insensitive modes of glucocorticoid secretion. A major hallmark of stress-related neuropsychiatric disorders is the disrupted glucocorticoid rhythms and tissue resistance to signaling with the glucocorticoid receptor (GR). GR resistance could result from the loss of context-dependent glucocorticoid signaling mediated by the downregulation of the activity-dependent neurotrophin BDNF. The coincidence of BDNF and GR signaling changes glucocorticoid signaling output with consequences on mitochondrial respiration efficiency, synaptic plasticity, and adaptive trajectories.
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Jiang M, Wang MH, Wang XB, Liu L, Wu JL, Yang XL, Liu XR, Zhang CX. Effect of intraoperative application of ketamine on postoperative depressed mood in patients undergoing elective orthopedic surgery. J Anesth 2015; 30:232-7. [PMID: 26582047 DOI: 10.1007/s00540-015-2096-7] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Accepted: 10/26/2015] [Indexed: 01/28/2023]
Abstract
PURPOSE A depressed mood frequently occurs in perioperative patients, negatively impacting patient recovery. Recent studies suggested that ketamine has a rapid, obvious, and persistent antidepressant effect. The purpose of this study was to investigate the impact of intraoperative application of ketamine on postoperative depressive mood in patients undergoing elective orthopedic surgery. METHODS This was a randomized, double-blind, controlled study. A total of 120 patients (ASA grade I-II) undergoing elective orthopedic surgery were divided randomly into a ketamine group (group K) and a control group (group C). In the K group, 0.5 mg/kg (0.05 ml/kg) ketamine was given at induction of anesthesia, followed by 0.25 mg/kg/h (0.025 ml/kg/h) continuous infusion for 30 min. In the C group, 0.05 ml/kg 0.9 % saline was used at induction of anesthesia, followed by 0.025 ml/kg/h continuous infusion of saline for 30 min. PHQ-9 score was recorded preoperatively (1 day before surgery) and postoperatively (on day 1 and day 5 following surgery). Blood at these time points was drawn for serum brain-derived neurotrophic factor (BDNF) level analysis. Intraoperative blood loss, surgery time, postoperative visual analog scale pain scores and perioperative complications were also recorded. RESULTS There were no differences in age, sex, surgery time, blood loss, and preoperative PHQ-9 scores between the two groups (P > 0.05). There were no differences in PHQ-9 scores preoperatively and postoperatively for the C group (P > 0.05); however, the PHQ-9 postoperative scores were lower than the preoperative PHQ-9 scores in the K group (P < 0.01). Postoperative PHQ-9 scores of K group were lower than those of C group (P < 0.05). There were no differences in serum BDNF levels in C group pre- to postoperatively (P > 0.05). Compared with the preoperative BDNF levels of K group, postoperative BDNF levels in K group increased significantly (P < 0.01). An inverse correlation between PHQ-9 score and serum BDNF level was shown. CONCLUSION Intraoperative application of ketamine was associated with improved scores for depressed mood and increased serum BDNF levels in patients undergoing elective orthopedic surgery.
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Affiliation(s)
- Min Jiang
- Department of Anesthesiology, The 1st Affiliated Hospital of Sichuan Medical University, Luzhou, 646000, Sichuan Province, China
| | - Mao-Hua Wang
- Department of Anesthesiology, The 1st Affiliated Hospital of Sichuan Medical University, Luzhou, 646000, Sichuan Province, China
| | - Xiao-Bin Wang
- Department of Anesthesiology, The 1st Affiliated Hospital of Sichuan Medical University, Luzhou, 646000, Sichuan Province, China.
| | - Li Liu
- Department of Anesthesiology, The 1st Affiliated Hospital of Sichuan Medical University, Luzhou, 646000, Sichuan Province, China
| | - Jia-Li Wu
- Department of Anesthesiology, The 1st Affiliated Hospital of Sichuan Medical University, Luzhou, 646000, Sichuan Province, China
| | - Xiao-Lin Yang
- Department of Anesthesiology, The 1st Affiliated Hospital of Sichuan Medical University, Luzhou, 646000, Sichuan Province, China
| | - Xue-Ru Liu
- Department of Anesthesiology, The 1st Affiliated Hospital of Sichuan Medical University, Luzhou, 646000, Sichuan Province, China
| | - Chun-Xiang Zhang
- Department of Pharmacology, Rush Medical College, Rush University, Chicago, IL, 60612, USA
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Ramesh M, Vepuri SB, Oosthuizen F, Soliman ME. Adenosine Monophosphate-Activated Protein Kinase (AMPK) as a Diverse Therapeutic Target: A Computational Perspective. Appl Biochem Biotechnol 2015; 178:810-30. [DOI: 10.1007/s12010-015-1911-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2015] [Accepted: 10/26/2015] [Indexed: 12/12/2022]
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Korpi ER, den Hollander B, Farooq U, Vashchinkina E, Rajkumar R, Nutt DJ, Hyytiä P, Dawe GS. Mechanisms of Action and Persistent Neuroplasticity by Drugs of Abuse. Pharmacol Rev 2015; 67:872-1004. [DOI: 10.1124/pr.115.010967] [Citation(s) in RCA: 101] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
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Ketamine and suicidal ideation in depression: Jumping the gun? Pharmacol Res 2015; 99:23-35. [DOI: 10.1016/j.phrs.2015.05.003] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Revised: 05/05/2015] [Accepted: 05/06/2015] [Indexed: 02/07/2023]
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Li Y, Zhu ZR, Ou BC, Wang YQ, Tan ZB, Deng CM, Gao YY, Tang M, So JH, Mu YL, Zhang LQ. Dopamine D2/D3 but not dopamine D1 receptors are involved in the rapid antidepressant-like effects of ketamine in the forced swim test. Behav Brain Res 2015; 279:100-5. [DOI: 10.1016/j.bbr.2014.11.016] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2014] [Revised: 11/03/2014] [Accepted: 11/08/2014] [Indexed: 12/23/2022]
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Early molecular and behavioral response to lipopolysaccharide in the WAG/Rij rat model of absence epilepsy and depressive-like behavior, involves interplay between AMPK, AKT/mTOR pathways and neuroinflammatory cytokine release. Brain Behav Immun 2014; 42:157-68. [PMID: 24998197 DOI: 10.1016/j.bbi.2014.06.016] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2014] [Revised: 06/16/2014] [Accepted: 06/24/2014] [Indexed: 12/20/2022] Open
Abstract
The mammalian target of rapamycin (mTOR) pathway has been recently indicated as a suitable drug target for the prevention of epileptogenesis. The mTOR pathway is known for its involvement in the control of the immune system. Since neuroinflammation is recognized as a major contributor to epileptogenesis, we wished to examine whether the neuroprotective effects of mTOR modulation could involve a suppression of the neuroinflammatory process in epileptic brain. We have investigated the early molecular mechanisms involved in the effects of intracerebral administration of the lipopolysaccharide (LPS) in the WAG/Rij rat model of absence epilepsy, in relation to seizure generation and depressive-like behavior; we also tested whether the effects of LPS could be modulated by treatment with rapamycin (RAP), a specific mTOR inhibitor. We determined, in specific rat brain areas, levels of p-mTOR/p-p70S6K and also p-AKT/p-AMPK as downstream or upstream indicators of mTOR activity and tested the effects of LPS and RAP co-administration. Changes in the brain levels of pro-inflammatory cytokines IL-1β and TNF-α and their relative mRNA expression levels were measured, and the involvement of nuclear factor-κB (NF-κB) was also examined in vitro. We confirmed that RAP inhibits the aggravation of absence seizures and depressive-like/sickness behavior induced by LPS in the WAG/Rij rats through the activation of mTOR and show that this effect is correlated with the ability of RAP to dampen and delay LPS increases in neuroinflammatory cytokines IL-1β and TNF-α, most likely through inhibition of the activation of NF-κB. Our results suggest that such a mechanism could contribute to the antiseizure, antiepileptogenic and behavioral effects of RAP and further highlight the potential therapeutic usefulness of mTOR inhibition in the management of human epilepsy and other neurological disorders. Furthermore, we show that LPS-dependent neuroinflammatory effects are also mediated by a complex interplay between AKT, AMPK and mTOR with specificity to selective brain areas. In conclusion, neuroinflammation appears to be a highly coordinated phenomenon, where timing of intervention may be carefully evaluated in order to identify the best suitable target.
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Zhu S, Wang J, Zhang Y, Li V, Kong J, He J, Li XM. Unpredictable chronic mild stress induces anxiety and depression-like behaviors and inactivates AMP-activated protein kinase in mice. Brain Res 2014; 1576:81-90. [PMID: 24971831 DOI: 10.1016/j.brainres.2014.06.002] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2014] [Revised: 05/30/2014] [Accepted: 06/03/2014] [Indexed: 01/02/2023]
Abstract
The unpredictable chronic mild stress (UCMS) model was developed based upon the stress-diathesis hypothesis of depression. Most effects of UCMS can be reversed by antidepressants, demonstrating a strong predictive validity of this model for depression. However, the mechanisms underlying the effects induced by UCMS remain incompletely understood. Increasing evidence has shown that AMP-activated protein kinase (AMPK) regulates intracellular energy metabolism and is especially important for neurons because neurons are known to have small energy reserves. Abnormalities in the AMPK pathway disturb normal brain functions and synaptic integrity. In the present study, we first investigated the effects of UCMS on a battery of different tests measuring anxiety and depression-like behaviors in female C57BL/6N mice after 4 weeks of UCMS exposure. Stressed mice showed suppressed body weight gain, heightened anxiety, and increased immobility in the forced swim and tail suspension tests. These results are representative of some of the core symptoms of depression. Simultaneously, we observed decrease of synaptic proteins in the cortex of mice subjected to UCMS, which is associated with decreased levels of phosphorylated AMP-activated protein kinase α (AMPKα) and 3-hydroxy-3-methylglutaryl coenzyme A reductase (HMG-CoA reductase). Our findings suggest that AMPKα inactivation might be a mechanism by which UCMS causes anxiety/depression-like behaviors in mice.
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Affiliation(s)
- Shenghua Zhu
- Department of Pharmacology and Therapeutics, Faculty of Medicine, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Junhui Wang
- Mental Health Center, Shantou University, Shantou, Guangdong, China; Department of Psychiatry, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada
| | - Yanbo Zhang
- Department of Psychiatry, College of Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Victor Li
- Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Jiming Kong
- Department of Human Anatomy and Cell Science, Faculty of Medicine, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Jue He
- First Affiliated Hospital, Henan University, Kaifeng, Henan, China
| | - Xin-Min Li
- Department of Psychiatry, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada.
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Yang X, Yang Q, Wang X, Luo C, Wan Y, Li J, Liu K, Zhou M, Zhang C. MicroRNA expression profile and functional analysis reveal that miR-206 is a critical novel gene for the expression of BDNF induced by ketamine. Neuromolecular Med 2014. [PMID: 24839168 DOI: 10.1007/12017-014-8312-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Depression is a major social and health concern, and ketamine exerts a quick, remarkable and persistent anti-depressive effect. microRNAs (miRNAs) show remarkable potential in the treatment of clinical depression. Here, we determined the expression profile of miRNAs in the hippocampus of rats treated with ketamine (15 mg/kg). The results suggest that multiple miRNAs were aberrantly expressed in rat hippocampus after ketamine injection (18 miRNAs were significantly reduced, while 22 miRNAs were significantly increased). Among them, miR-206 was down-regulated in ketamine-treated rats. In both cultured neuronal cells in vitro and hippocampus in vivo, we identified that the brain-derived neurotrophic factor (BDNF) was a direct target gene of miR-206. Via this target gene, miR-206 strongly modulated the expression of BDNF. Moreover, overexpression of miR-206 significantly attenuated ketamine-induced up-regulation of BDNF. The results indicated that miRNA-206 was involved in novel therapeutic targets for the anti-depressive effect of ketamine.
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Affiliation(s)
- Xiaolin Yang
- Department of Anesthesiology, Affiliated Hospital of Luzhou Medical College, Luzhou, 646000, Sichuan Province, China
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Yang X, Yang Q, Wang X, Luo C, Wan Y, Li J, Liu K, Zhou M, Zhang C. MicroRNA expression profile and functional analysis reveal that miR-206 is a critical novel gene for the expression of BDNF induced by ketamine. Neuromolecular Med 2014; 16:594-605. [PMID: 24839168 DOI: 10.1007/s12017-014-8312-z] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2014] [Accepted: 05/06/2014] [Indexed: 01/12/2023]
Abstract
Depression is a major social and health concern, and ketamine exerts a quick, remarkable and persistent anti-depressive effect. microRNAs (miRNAs) show remarkable potential in the treatment of clinical depression. Here, we determined the expression profile of miRNAs in the hippocampus of rats treated with ketamine (15 mg/kg). The results suggest that multiple miRNAs were aberrantly expressed in rat hippocampus after ketamine injection (18 miRNAs were significantly reduced, while 22 miRNAs were significantly increased). Among them, miR-206 was down-regulated in ketamine-treated rats. In both cultured neuronal cells in vitro and hippocampus in vivo, we identified that the brain-derived neurotrophic factor (BDNF) was a direct target gene of miR-206. Via this target gene, miR-206 strongly modulated the expression of BDNF. Moreover, overexpression of miR-206 significantly attenuated ketamine-induced up-regulation of BDNF. The results indicated that miRNA-206 was involved in novel therapeutic targets for the anti-depressive effect of ketamine.
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Affiliation(s)
- Xiaolin Yang
- Department of Anesthesiology, Affiliated Hospital of Luzhou Medical College, Luzhou, 646000, Sichuan Province, China
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