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Talaee N, Azadvar S, Khodadadi S, Abbasi N, Asli-Pashaki ZN, Mirabzadeh Y, Kholghi G, Akhondzadeh S, Vaseghi S. Comparing the effect of fluoxetine, escitalopram, and sertraline, on the level of BDNF and depression in preclinical and clinical studies: a systematic review. Eur J Clin Pharmacol 2024; 80:983-1016. [PMID: 38558317 DOI: 10.1007/s00228-024-03680-y] [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: 02/17/2023] [Accepted: 03/21/2024] [Indexed: 04/04/2024]
Abstract
Brain-derived neurotrophic factor (BDNF) dysfunction is one of the most important mechanisms underlying depression. It seems that selective serotonin reuptake inhibitors (SSRIs) improve depression via affecting BDNF level. In this systematic review, for the first time, we aimed to review the effect of three SSRIs including fluoxetine, escitalopram, and sertraline, on both depression and BDNF level in preclinical and clinical studies. PubMed electronic database was searched, and 193 articles were included in this study. After reviewing all manuscripts, only one important difference was found: subjects. We found that SSRIs induce different effects in animals vs. humans. Preclinical studies showed many controversial effects, while human studies showed only two effects: improvement of depression, with or without the improvement of BDNF. However, most studies used chronic SSRIs treatment, while acute SSRIs were not effectively used and evaluated. In conclusion, it seems that SSRIs are reliable antidepressants, and the improvement effect of SSRIs on depression is not dependent to BDNF level (at least in human studies).
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Affiliation(s)
- Nastaran Talaee
- Department of Psychology, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Shataw Azadvar
- Department of Power Electronic, Faculty of Electrical Engineering, Sahand University of Technology, Tabriz, Iran
| | - Sanaz Khodadadi
- Student Research Committee, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Nahal Abbasi
- Department of Health Psychology, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | | | - Yasaman Mirabzadeh
- Institute of Biochemistry and Biophysics (IBB), University of Tehran, Tehran, Iran
| | - Gita Kholghi
- Department of Psychology, Faculty of Human Sciences, Tonekabon Branch, Islamic Azad University, Tonekabon, Iran
| | - Shahin Akhondzadeh
- Psychiatric Research Center, Department of Psychiatry, Faculty of Medicine, Roozbeh Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Salar Vaseghi
- Cognitive Neuroscience Lab, Medicinal Plants Research Center, Institute of Medicinal Plants, ACECR, Karaj, 1419815477, Iran.
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Akinduko AA, Salawu SO, Akinmoladun AC, Akindahunsi AA, Osemwegie OO. Assessment of the anxiolytic, antidepressant, and antioxidant potential of Parquetina nigrescens (Afzel.) Bullock in Wistar rats. JOURNAL OF ETHNOPHARMACOLOGY 2024; 322:117597. [PMID: 38128891 DOI: 10.1016/j.jep.2023.117597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 12/07/2023] [Accepted: 12/12/2023] [Indexed: 12/23/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The recent growing concerns about the multisystemic nature of mental health conditions in the global population are facilitating a new paradigm involving alternative natural, nutritional, and complementary therapies. Herbal remedies despite accounts in literature of their ethnobotanical as alternative remedies for diverse ailments, remain underexplored for psychiatric disorders like anxiety, depression, and insomnia. AIM OF THE STUDY Hence, the anxiolytic, antidepressant, and antioxidant properties of a hydro-ethanolic leaf extract of Parquetina nigrescens (PN) in male Wistar rats were investigated. MATERIALS AND METHODS The sedative effect was evaluated using the Diazepam sleeping time test while anxiety was induced with a single intraperitoneal injection of 20 mg/kg pentylenetetrazol (PTZ). This was after pre-treatment with 100, 150, and 250 mg/kg of PN or the standard drugs (1 mg/kg diazepam and 30 mg/kg imipramine) for 14 consecutive days. Behavioral tests (Open Field test, Elevated Plus-Maze test, and Forced Swim test) were performed on days 1 and 14, to evaluate the antidepressant and anxiolytic activities of PN. Oxidative stress and neurochemical markers were determined in the brain homogenates of the animals. RESULTS The duration of sleep was significantly (p < 0.001) increased in the PN-administered group compared to the control. The behavioral models showed that PN exhibited antidepressant and anxiolytic properties in PTZ-induced animals. Significant reductions were observed in GSH level and SOD activity while MDA, nitrite, and GPx levels were significantly increased in PTZ-induced rats. However, treatment with PN significantly improved brain antioxidant status by ameliorating the PTZ-induced oxidative stress. Dopamine, cortisol, and acetylcholine esterase activity levels were significantly (p < 0.05) elevated while serotonin and brain-derived neurotrophic factors were reduced in PTZ-induced rats compared with the control. CONCLUSION The PN demonstrated neurotransmitter modulatory ability by ameliorating the PTZ-induced neurochemical dysfunction. Findings from this study showed that PN exhibited sedative, antidepressant, and anxiolytic activities in rats.
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Affiliation(s)
- Ayokunmi Adebukola Akinduko
- Department of Biochemistry, College of Pure and Applied Sciences, Landmark University, Omu-Aran, Kwara State, Nigeria; Department of Biochemistry, School of Life Sciences, Federal University of Technology, Akure, Ondo State, Nigeria.
| | - Sule Ola Salawu
- Department of Biochemistry, School of Life Sciences, Federal University of Technology, Akure, Ondo State, Nigeria.
| | - Afolabi Clement Akinmoladun
- Department of Biochemistry, School of Life Sciences, Federal University of Technology, Akure, Ondo State, Nigeria.
| | | | - Osarenkhoe Omorefosa Osemwegie
- Department of Food Science and Microbiology, College of Pure and Applied Sciences, Landmark University, Omu Aran, Kwara State, Nigeria.
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Qu Y, Zhou N, Zhang X, Li Y, Xu XF. Chromatin Remodeling Factor SMARCA5 is Essential for Hippocampal Memory Maintenance via Metabolic Pathways in Mice. Neurosci Bull 2023; 39:1087-1104. [PMID: 36807260 PMCID: PMC10313638 DOI: 10.1007/s12264-023-01032-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Accepted: 09/27/2022] [Indexed: 02/21/2023] Open
Abstract
Gene transcription and new protein synthesis regulated by epigenetics play integral roles in the formation of new memories. However, as an important part of epigenetics, the function of chromatin remodeling in learning and memory has been less studied. Here, we showed that SMARCA5 (SWI/SNF related, matrix-associated, actin-dependent regulator of chromatin, subfamily A, member 5), a critical chromatin remodeler, was responsible for hippocampus-dependent memory maintenance and neurogenesis. Using proteomics analysis, we found protein expression changes in the hippocampal dentate gyrus (DG) after the knockdown of SMARCA5 during contextual fear conditioning (CFC) memory maintenance in mice. Moreover, SMARCA5 was revealed to participate in CFC memory maintenance via modulating the proteins of metabolic pathways such as nucleoside diphosphate kinase-3 (NME3) and aminoacylase 1 (ACY1). This work is the first to describe the role of SMARCA5 in memory maintenance and to demonstrate the involvement of metabolic pathways regulated by SMARCA5 in learning and memory.
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Affiliation(s)
- Yu Qu
- Institute of Neuropsychiatric Diseases, Qingdao University, Qingdao, 266001, China
| | - Nan Zhou
- Department of Urology, Qilu Hospital of Shandong University, Jinan, 250012, China
| | - Xia Zhang
- Institute of Neuropsychiatric Diseases, Qingdao University, Qingdao, 266001, China
- University of Ottawa Institute of Mental Health Research at the Royal, Ottawa, K1Z7K4, Canada
- Department of Anesthesiology and Perioperative Medicine, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
- Key Laboratory of Modern Teaching Technology & College of Life Sciences, Shaanxi Normal University, Xi'an, 710062, China
| | - Yan Li
- Department of Urology, Qilu Hospital of Shandong University, Jinan, 250012, China.
| | - Xu-Feng Xu
- Institute of Neuropsychiatric Diseases, Qingdao University, Qingdao, 266001, China.
- University of Ottawa Institute of Mental Health Research at the Royal, Ottawa, K1Z7K4, Canada.
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Leschik J, Gentile A, Cicek C, Péron S, Tevosian M, Beer A, Radyushkin K, Bludau A, Ebner K, Neumann I, Singewald N, Berninger B, Lessmann V, Lutz B. Brain-derived neurotrophic factor expression in serotonergic neurons improves stress resilience and promotes adult hippocampal neurogenesis. Prog Neurobiol 2022; 217:102333. [PMID: 35872219 DOI: 10.1016/j.pneurobio.2022.102333] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 06/24/2022] [Accepted: 07/19/2022] [Indexed: 11/19/2022]
Abstract
The neurotrophin brain-derived neurotrophic factor (BDNF) stimulates adult neurogenesis, but also influences structural plasticity and function of serotonergic neurons. Both, BDNF/TrkB signaling and the serotonergic system modulate behavioral responses to stress and can lead to pathological states when dysregulated. The two systems have been shown to mediate the therapeutic effect of antidepressant drugs and to regulate hippocampal neurogenesis. To elucidate the interplay of both systems at cellular and behavioral levels, we generated a transgenic mouse line that overexpresses BDNF in serotonergic neurons in an inducible manner. Besides displaying enhanced hippocampus-dependent contextual learning, transgenic mice were less affected by chronic social defeat stress (CSDS) compared to wild-type animals. In parallel, we observed enhanced serotonergic axonal sprouting in the dentate gyrus and increased neural stem/progenitor cell proliferation, which was uniformly distributed along the dorsoventral axis of the hippocampus. In the forced swim test, BDNF-overexpressing mice behaved similarly as wild-type mice treated with the antidepressant fluoxetine. Our data suggest that BDNF released from serotonergic projections exerts this effect partly by enhancing adult neurogenesis. Furthermore, independently of the genotype, enhanced neurogenesis positively correlated with the social interaction time after the CSDS, a measure for stress resilience.
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Affiliation(s)
- Julia Leschik
- Institute of Physiological Chemistry, University Medical Center of the Johannes Gutenberg University Mainz, Mainz 55128, Germany.
| | - Antonietta Gentile
- Institute of Physiological Chemistry, University Medical Center of the Johannes Gutenberg University Mainz, Mainz 55128, Germany; Department of Systems Medicine, Tor Vergata University, Rome 00183, Italy
| | - Cigdem Cicek
- Institute of Physiological Chemistry, University Medical Center of the Johannes Gutenberg University Mainz, Mainz 55128, Germany; Faculty of Medicine, Department of Medical Biochemistry, Hacettepe University, 06100 Ankara, Turkey; Faculty of Medicine, Department of Medical Biochemistry, Yuksek Ihtisas University, 06520 Ankara, Turkey
| | - Sophie Péron
- Institute of Physiological Chemistry, University Medical Center of the Johannes Gutenberg University Mainz, Mainz 55128, Germany; Institute of Psychiatry, Psychology & Neuroscience, Centre for Developmental Neurobiology, King's College London, London SE11UL, United Kingdom
| | - Margaryta Tevosian
- Institute of Physiological Chemistry, University Medical Center of the Johannes Gutenberg University Mainz, Mainz 55128, Germany; Leibniz Institute for Resilience Research (LIR), Mainz 55122, Germany
| | - Annika Beer
- Institute of Physiological Chemistry, University Medical Center of the Johannes Gutenberg University Mainz, Mainz 55128, Germany; Leibniz Institute for Resilience Research (LIR), Mainz 55122, Germany
| | | | - Anna Bludau
- Department of Behavioural and Molecular Neurobiology, University of Regensburg, Regensburg 93053, Germany
| | - Karl Ebner
- Department of Pharmacology and Toxicology, Institute of Pharmacy and Center for Molecular Biosciences Innsbruck, Leopold Franzens University Innsbruck, Innsbruck 6020, Austria
| | - Inga Neumann
- Department of Behavioural and Molecular Neurobiology, University of Regensburg, Regensburg 93053, Germany
| | - Nicolas Singewald
- Department of Pharmacology and Toxicology, Institute of Pharmacy and Center for Molecular Biosciences Innsbruck, Leopold Franzens University Innsbruck, Innsbruck 6020, Austria
| | - Benedikt Berninger
- Institute of Physiological Chemistry, University Medical Center of the Johannes Gutenberg University Mainz, Mainz 55128, Germany; Institute of Psychiatry, Psychology & Neuroscience, Centre for Developmental Neurobiology, King's College London, London SE11UL, United Kingdom; Focus Program Translational Neuroscience, University Medical Center of the Johannes Gutenberg University Mainz, Mainz 55131, Germany; MRC Centre for Neurodevelopmental Disorders, King's College London, London SE11UL, United Kingdom
| | - Volkmar Lessmann
- Institute of Physiology, Medical Faculty, Otto-von-Guericke-University, Magdeburg 39120, Germany; Center for Behavioral Brain Sciences (CBBS), Magdeburg 39120, Germany
| | - Beat Lutz
- Institute of Physiological Chemistry, University Medical Center of the Johannes Gutenberg University Mainz, Mainz 55128, Germany; Leibniz Institute for Resilience Research (LIR), Mainz 55122, Germany
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Lan T, Wu Y, Zhang Y, Li S, Zhu Z, Wang L, Mao X, Li Y, Fan C, Wang W, Yu SY. Agomelatine rescues lipopolysaccharide-induced neural injury and depression-like behaviors via suppression of the Gαi-2-PKA-ASK1 signaling pathway. J Neuroinflammation 2022; 19:117. [PMID: 35610704 PMCID: PMC9131561 DOI: 10.1186/s12974-022-02479-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Accepted: 05/15/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Agomelatine has been shown to be effective in the treatment of depression, but the molecular mechanisms underlying its antidepressant effects have yet to be elucidated. Identification of these molecular mechanisms would not only offer new insights into the basis for depression but also provide the foundation for the development of novel treatments for this disorder. METHODS Intraperitoneal injection of LPS was used to induce depression-like behaviors in rats. The interactions of the 5-HT2C reporter and Gαi-2 were verified by immunoprecipitation or immunofluorescence assay. Inflammatory related proteins, autophagy related proteins and apoptosis markers were verified by immunoblotting or immunofluorescence assay. Finally, electron microscopy analysis was used to observe the synapse and ultrastructural pathology. RESULTS Here, we found that the capacity for agomelatine to ameliorate depression and anxiety in a lipopolysaccharide (LPS)-induced rat model of depression was associated with an alleviation of neuroinflammation, abnormal autophagy and neuronal apoptosis as well as the promotion of neurogenesis in the hippocampal dentate gyrus (DG) region of these rats. We also found that the 5-HT2C receptor is coupled with G alphai (2) (Gαi-2) protein within hippocampal neurons and, agomelatine, acting as a 5-HT2C receptor antagonist, can up-regulate activity of the Gαi-2-cAMP-PKA pathway. Such events then suppress activation of the apoptosis signal-regulating kinase 1 (ASK1) pathway, a member of the mitogen-activated protein kinase (MAPK) family involved in pathological processes of many diseases. CONCLUSION Taken together, these results suggest that agomelatine plays a neuroprotective role in regulating neuroinflammation, autophagy disorder and apoptosis in this LPS-induced rat model of depression, effects which are associated with the display of antidepressant behaviors. These findings provide evidence for some of the potential mechanisms for the antidepressant effects of agomelatine.
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Affiliation(s)
- Tian Lan
- Department of Physiology, School of Basic Medical Sciences, Shandong University, 44 Wenhuaxilu Road, Jinan, Shandong Province, 250012, People's Republic of China
| | - Yuhan Wu
- Department of Physiology, School of Basic Medical Sciences, Shandong University, 44 Wenhuaxilu Road, Jinan, Shandong Province, 250012, People's Republic of China
| | - Yulei Zhang
- Jinan International Travel Healthcare Center, Wenhuadonglu Road 62#, Jinan, Shandong Province, 250012, People's Republic of China
| | - Shuhan Li
- Department of Physiology, School of Basic Medical Sciences, Shandong University, 44 Wenhuaxilu Road, Jinan, Shandong Province, 250012, People's Republic of China
| | - Zhanpeng Zhu
- Department of Physiology, School of Basic Medical Sciences, Shandong University, 44 Wenhuaxilu Road, Jinan, Shandong Province, 250012, People's Republic of China
| | - Liyan Wang
- Morphological Experimental Center, School of Basic Medical Sciences, Shandong University, 44 Wenhuaxilu Road, Jinan, Shandong Province, 250012, People's Republic of China
| | - Xueqin Mao
- Department of Psychology, Qilu Hospital of Shandong University, 107 Wenhuaxilu Road, Jinan, Shandong Province, 250012, People's Republic of China
| | - Ye Li
- Department of Physiology, School of Basic Medical Sciences, Shandong University, 44 Wenhuaxilu Road, Jinan, Shandong Province, 250012, People's Republic of China
| | - Cuiqin Fan
- Department of Physiology, School of Basic Medical Sciences, Shandong University, 44 Wenhuaxilu Road, Jinan, Shandong Province, 250012, People's Republic of China
| | - Wenjing Wang
- Department of Physiology, School of Basic Medical Sciences, Shandong University, 44 Wenhuaxilu Road, Jinan, Shandong Province, 250012, People's Republic of China
| | - Shu Yan Yu
- Department of Physiology, School of Basic Medical Sciences, Shandong University, 44 Wenhuaxilu Road, Jinan, Shandong Province, 250012, People's Republic of China. .,Shandong Provincial Key Laboratory of Mental Disorders, School of Basic Medical Sciences, 44 Wenhuaxilu Road, Jinan, Shandong Province, 250012, People's Republic of China.
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Won E, Na KS, Kim YK. Associations between Melatonin, Neuroinflammation, and Brain Alterations in Depression. Int J Mol Sci 2021; 23:ijms23010305. [PMID: 35008730 PMCID: PMC8745430 DOI: 10.3390/ijms23010305] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 12/21/2021] [Accepted: 12/26/2021] [Indexed: 12/14/2022] Open
Abstract
Pro-inflammatory systemic conditions that can cause neuroinflammation and subsequent alterations in brain regions involved in emotional regulation have been suggested as an underlying mechanism for the pathophysiology of major depressive disorder (MDD). A prominent feature of MDD is disruption of circadian rhythms, of which melatonin is considered a key moderator, and alterations in the melatonin system have been implicated in MDD. Melatonin is involved in immune system regulation and has been shown to possess anti-inflammatory properties in inflammatory conditions, through both immunological and non-immunological actions. Melatonin has been suggested as a highly cytoprotective and neuroprotective substance and shown to stimulate all stages of neuroplasticity in animal models. The ability of melatonin to suppress inflammatory responses through immunological and non-immunological actions, thus influencing neuroinflammation and neurotoxicity, along with subsequent alterations in brain regions that are implicated in depression, can be demonstrated by the antidepressant-like effects of melatonin. Further studies that investigate the associations between melatonin, immune markers, and alterations in the brain structure and function in patients with depression could identify potential MDD biomarkers.
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Affiliation(s)
- Eunsoo Won
- Department of Psychiatry, Chaum, Seoul 06062, Korea;
- Department of Psychiatry, CHA Bundang Medical Center, CHA University, Seongnam 13496, Korea
| | - Kyoung-Sae Na
- Department of Psychiatry, Gachon University Gil Medical Center, Incheon 21565, Korea;
| | - Yong-Ku Kim
- Department of Psychiatry, Korea University Ansan Hospital, Korea University College of Medicine, Ansan 15355, Korea
- Correspondence:
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Short Daily Exposure to Environmental Enrichment, Fluoxetine, or Their Combination Reverses Deterioration of the Coat and Anhedonia Behaviors with Differential Effects on Hippocampal Neurogenesis in Chronically Stressed Mice. Int J Mol Sci 2021; 22:ijms222010976. [PMID: 34681636 PMCID: PMC8535985 DOI: 10.3390/ijms222010976] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 08/10/2021] [Accepted: 08/10/2021] [Indexed: 11/16/2022] Open
Abstract
Depression is a neuropsychiatric disorder with a high impact on the worldwide population. To overcome depression, antidepressant drugs are the first line of treatment. However, pre-clinical studies have pointed out that antidepressants are not entirely efficacious and that the quality of the living environment after stress cessation may play a relevant role in increasing their efficacy. As it is unknown whether a short daily exposure to environmental enrichment during chronic stress and antidepressant treatment will be more effective than just the pharmacological treatment, this study analyzed the effects of fluoxetine, environmental enrichment, and their combination on depressive-associated behavior. Additionally, we investigated hippocampal neurogenesis in mice exposed to chronic mild stress. Our results indicate that fluoxetine reversed anhedonia. Besides, fluoxetine reversed the decrement of some events of the hippocampal neurogenic process caused by chronic mild stress. Conversely, short daily exposure to environmental enrichment changed the deterioration of the coat and anhedonia. Although, this environmental intervention did not produce significant changes in the neurogenic process affected by chronic mild stress, fluoxetine plus environmental enrichment showed similar effects to those caused by environmental enrichment to reverse depressive-like behaviors. Like fluoxetine, the combination reversed the declining number of Ki67, doublecortin, calretinin cells and mature newborn neurons. Finally, this study suggests that short daily exposure to environmental enrichment improves the effects of fluoxetine to reverse the deterioration of the coat and anhedonia in chronically stressed mice. In addition, the combination of fluoxetine with environmental enrichment produces more significant effects than those caused by fluoxetine alone on some events of the neurogenic process. Thus, environmental enrichment improves the benefits of pharmacological treatment by mechanisms that need to be clarified.
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Neuroprotective effect of agomelatine in rat model of psychosis: Behavioural and histological evidence. JOURNAL OF AFFECTIVE DISORDERS REPORTS 2021. [DOI: 10.1016/j.jadr.2020.100070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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Cohen H, Zohar J, Carmi L. Effects of agomelatine on behaviour, circadian expression of period 1 and period 2 clock genes and neuroplastic markers in the predator scent stress rat model of PTSD. World J Biol Psychiatry 2020; 21:255-273. [PMID: 30230406 DOI: 10.1080/15622975.2018.1523560] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Objectives: The therapeutic value of the antidepressant agomelatine in the aftermath of traumatic experience and early post-reminder has been questioned. Herein, agomelatine, its vehicle or melatonin agonist were administered either acutely 1 h post-stressor or repeatedly (7 days) after early post-reminder in a post-traumatic stress rat model (PSS) using the scent of predator urine.Methods: Behavioural responses, and brain molecular and morphological changes were evaluated after each treatment procedure in PSS-exposed and unexposed rats.Results: When administered immediately after PSS, agomelatine induced a significant reduction of anxiety-like behaviour as assessed in the elevated-plus-maze and acoustic startle response at 8 days post-administration. Concomitantly, agomelatine significantly decreased Per1/Per2 expression in the CA1/CA3 areas, suprachiasmatic nucleus and basolateral amygdala, thereby partially restoring genes expression overregulated by PSS. Agomelatine further significantly increased cell growth and facilitated dendritic growth and arbour in dentate gyrus (DG) granule and apical CA1 cells and upregulated brain-derived neurotrophic factor protein in the DG and cortex III versus vehicle. When administered early post-reminder over 7 days before testing, agomelatine was ineffective on behavioural responses pattern, molecular and morphological changes induced by PSS.Conclusions: These findings suggest that agomelatine may be a potential agent in the acute aftermath of traumatic stress exposure.
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Affiliation(s)
- Hagit Cohen
- Beer-Sheva Mental Health Center, The State of Israel Ministry of Health, Anxiety and Stress Research Unit, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beersheba, Israel
| | - Joseph Zohar
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Lior Carmi
- School of Psychological Sciences, Tel Aviv University, Tel Aviv, Israel
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Lad KA, Maheshwari A, Saxena B. Repositioning of an anti-depressant drug, agomelatine as therapy for brain injury induced by craniotomy. Drug Discov Ther 2020; 13:189-197. [PMID: 31534070 DOI: 10.5582/ddt.2019.01056] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Traumatic brain injury (TBI) leads to the disruption of blood-brain barrier integrity and therefore results in increased brain water content (brain edema). Brain edema is a significant factor for increased intracranial pressure (ICP), which ultimately causes functional disability and death. The decompressive craniotomy (DC) is a surgical procedure widely used for treating increased ICP following TBI. The life-saving craniotomy itself results in brain injury. The objective of this study is to investigate the effect of agomelatine against craniotomy induced brain injury. The craniotomy was performed by a variable speed micro-motor dental driller of 0.8 mm drill bit. The present study, in addition to blood-brain permeability, brain water content (edema) and histological examination of the brain, also estimated locomotor activity, oxidant, and antioxidant parameters. Results show that the craniotomy induced increase in the blood-brain barrier permeability, brain water content (edema), oxidative stress (lipid peroxide and nitric oxide) and impaired antioxidant mechanisms (superoxide dismutase, catalase, and reduced glutathione) in rats. The craniotomy was also found to increase neuronal cell death indicated by augmented chromatolysis and impaired locomotor activity. Administration of agomelatine after the craniotomy ameliorated histopathological, neurochemical and behavioral consequences of craniotomy. Thus agomelatine is effective against brain injury caused by craniotomy.
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Affiliation(s)
- Krishna A Lad
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research-Ahmedabad
| | - Anurag Maheshwari
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research-Ahmedabad
| | - Bhagawati Saxena
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research-Ahmedabad
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Abstract
Selective serotonin reuptake inhibitors are among the most prescribed antidepressants. Fluoxetine is the lead molecule which exerts its therapeutic effects, at least in part, by promoting neuroplasticity through increased brain-derived neurotrophic factor (BDNF)/tropomyosin-related receptor kinase B (TrkB) signalling. It is unclear however, to which extent the neuroplastic effects of fluoxetine are solely mediated by the inhibition of the serotonin transporter (5-HTT). To answer this question, the effects of fluoxetine on neuroplasticity were analysed in both wild type (WT) and 5-Htt knock-out (KO) mice. Using Western blotting and RT-qPCR approaches, we showed that fluoxetine 10 µM activated BDNF/TrkB signalling pathways in both CD1 and C57BL/6J mouse primary cortical neurons. Interestingly, effects on BDNF signalling were observed in primary cortical neurons from both 5-Htt WT and KO mice. In addition, a 3-week in vivo fluoxetine treatment (15 mg/kg/d; i.p.) increased the expression of plasticity genes in brains of both 5-Htt WT and KO mice, and tended to equally enhance hippocampal cell proliferation in both genotypes, without reaching significance. Our results further suggest that fluoxetine-induced neuroplasticity does not solely depend on 5-HTT blockade, but might rely, at least in part, on 5-HTT-independent direct activation of TrkB.
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Srikumar BN, Naidu PS, Kalidindi N, Paschapur M, Adepu B, Subramani S, Nagar J, Srivastava R, Sreedhara MV, Prasad DS, Das ML, Louis JV, Kuchibhotla VK, Dudhgaonkar S, Pieschl RL, Li YW, Bristow LJ, Ramarao M, Vikramadithyan RK. Diminished responses to monoaminergic antidepressants but not ketamine in a mouse model for neuropsychiatric lupus. J Psychopharmacol 2019; 33:25-36. [PMID: 30484737 DOI: 10.1177/0269881118812102] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
BACKGROUND A significant proportion of patients suffering from major depression fail to remit following treatment and develop treatment-resistant depression. Developing novel treatments requires animal models with good predictive validity. MRL/lpr mice, an established model of systemic lupus erythematosus, show depression-like behavior. AIMS We evaluated responses to classical antidepressants, and associated immunological and biochemical changes in MRL/lpr mice. METHODS AND RESULTS MRL/lpr mice showed increased immobility in the forced swim test, decreased wheel running and sucrose preference when compared with the controls, MRL/MpJ mice. In MRL/lpr mice, acute fluoxetine (30 mg/kg, intraperitoneally (i.p.)), imipramine (10 mg/kg, i.p.) or duloxetine (10 mg/kg, i.p.) did not decrease the immobility time in the Forced Swim Test. Interestingly, acute administration of combinations of olanzapine (0.03 mg/kg, subcutaneously)+fluoxetine (30 mg/kg, i.p.) or bupropion (10 mg/kg, i.p.)+fluoxetine (30 mg/kg, i.p.) retained efficacy. A single dose of ketamine but not three weeks of imipramine (10 mg/kg, i.p.) or escitalopram (5 mg/kg, i.p.) treatment in MRL/lpr mice restored sucrose preference. Further, we evaluated inflammatory, immune-mediated and neuronal mechanisms. In MRL/lpr mice, there was an increase in autoantibodies' titers, [3H]PK11195 binding and immune complex deposition. There was a significant infiltration of the brain by macrophages, neutrophils and T-lymphocytes. p11 mRNA expression was decreased in the prefrontal cortex. Further, there was an increase in the 5-HT2aR expression, plasma corticosterone and indoleamine 2,3-dioxygenase activity. CONCLUSION In summary, the MRL/lpr mice could be a useful model for Treatment Resistant Depression associated with immune dysfunction with potential to expedite antidepressant drug discovery.
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Affiliation(s)
- Bettadapura N Srikumar
- 1 Disease Sciences and Technology, Biocon-Bristol-Myers Squibb R&D Center, Bangalore, India
| | - Pattipati S Naidu
- 1 Disease Sciences and Technology, Biocon-Bristol-Myers Squibb R&D Center, Bangalore, India
| | | | - Mahesh Paschapur
- 1 Disease Sciences and Technology, Biocon-Bristol-Myers Squibb R&D Center, Bangalore, India
| | - Bharath Adepu
- 1 Disease Sciences and Technology, Biocon-Bristol-Myers Squibb R&D Center, Bangalore, India
| | - Siva Subramani
- 1 Disease Sciences and Technology, Biocon-Bristol-Myers Squibb R&D Center, Bangalore, India
| | - Jignesh Nagar
- 1 Disease Sciences and Technology, Biocon-Bristol-Myers Squibb R&D Center, Bangalore, India
| | - Ratika Srivastava
- 1 Disease Sciences and Technology, Biocon-Bristol-Myers Squibb R&D Center, Bangalore, India
| | - Muppana V Sreedhara
- 1 Disease Sciences and Technology, Biocon-Bristol-Myers Squibb R&D Center, Bangalore, India
| | - Durga Shiva Prasad
- 1 Disease Sciences and Technology, Biocon-Bristol-Myers Squibb R&D Center, Bangalore, India
| | - Manish Lal Das
- 1 Disease Sciences and Technology, Biocon-Bristol-Myers Squibb R&D Center, Bangalore, India
| | - Justin V Louis
- 1 Disease Sciences and Technology, Biocon-Bristol-Myers Squibb R&D Center, Bangalore, India
| | - Vijaya K Kuchibhotla
- 1 Disease Sciences and Technology, Biocon-Bristol-Myers Squibb R&D Center, Bangalore, India
| | - Shailesh Dudhgaonkar
- 1 Disease Sciences and Technology, Biocon-Bristol-Myers Squibb R&D Center, Bangalore, India
| | - Rick L Pieschl
- 2 Neuroscience Biology, Bristol-Myers Squibb Company, Wallingford, CT, USA
| | - Yu-Wen Li
- 2 Neuroscience Biology, Bristol-Myers Squibb Company, Wallingford, CT, USA
| | - Linda J Bristow
- 2 Neuroscience Biology, Bristol-Myers Squibb Company, Wallingford, CT, USA
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Can ÖD, Üçel Uİ, Demir Özkay Ü, Ulupınar E. The Effect of Agomelatine Treatment on Diabetes-Induced Cognitive Impairments in Rats: Concomitant Alterations in the Hippocampal Neuron Numbers. Int J Mol Sci 2018; 19:ijms19082461. [PMID: 30127276 PMCID: PMC6121488 DOI: 10.3390/ijms19082461] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Revised: 08/05/2018] [Accepted: 08/17/2018] [Indexed: 12/30/2022] Open
Abstract
Researches that are related to the central nervous system complications of diabetes have indicated higher incidence of cognitive disorders in patients. Since the variety of nootropic drugs used in clinics is limited and none of them consistently improves the outcomes, new and effective drug alternatives are needed for the treatment of diabetes-induced cognitive disorders. Based on the nootropic potential of agomelatine, the promising efficacy of this drug on cognitive impairments of diabetic rats was investigated in the current study. Experimental diabetes model was induced by streptozotocin. After development of diabetes-related cognitive impairments in rats, agomelatine (40 and 80 mg/kg) was administrated orally for two weeks. Cognitive performance was assessed by Morris water-maze and passive avoidance tests. Then, the total numbers of neurons in both dentate gyrus and Cornu Ammonis (CA) 1–3 subfields of the hippocampus were estimated by the optical fractionator method. Agomelatine treatment induced notable enhancement in the learning and memory performance of diabetic rats. Moreover, it reversed the neuronal loss in the hippocampal subregions of diabetic animals. Obtained results suggest that agomelatine has a significant potential for the treatment of diabetes-induced cognitive impairments. However, therapeutic efficacy of this drug in diabetic patients suffering from cognitive dysfunctions needs to be confirmed by further clinical trials.
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Affiliation(s)
- Özgür Devrim Can
- Department of Pharmacology, Faculty of Pharmacy, Anadolu University, 26470 Eskişehir, Turkey.
| | - Umut İrfan Üçel
- Department of Pharmacology, Faculty of Pharmacy, Anadolu University, 26470 Eskişehir, Turkey.
| | - Ümide Demir Özkay
- Department of Pharmacology, Faculty of Pharmacy, Anadolu University, 26470 Eskişehir, Turkey.
| | - Emel Ulupınar
- Department of Anatomy, Faculty of Medicine, Eskisehir Osmangazi University, 26480 Eskisehir, Turkey.
- Interdisciplinary Neuroscience Department, Health Science Institute of Eskişehir Osmangazi University, 26480 Eskisehir, Turkey.
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Levy MJF, Boulle F, Steinbusch HW, van den Hove DLA, Kenis G, Lanfumey L. Neurotrophic factors and neuroplasticity pathways in the pathophysiology and treatment of depression. Psychopharmacology (Berl) 2018; 235:2195-2220. [PMID: 29961124 PMCID: PMC6061771 DOI: 10.1007/s00213-018-4950-4] [Citation(s) in RCA: 162] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Accepted: 06/18/2018] [Indexed: 02/06/2023]
Abstract
Depression is a major health problem with a high prevalence and a heavy socioeconomic burden in western societies. It is associated with atrophy and impaired functioning of cortico-limbic regions involved in mood and emotion regulation. It has been suggested that alterations in neurotrophins underlie impaired neuroplasticity, which may be causally related to the development and course of depression. Accordingly, mounting evidence suggests that antidepressant treatment may exert its beneficial effects by enhancing trophic signaling on neuronal and synaptic plasticity. However, current antidepressants still show a delayed onset of action, as well as lack of efficacy. Hence, a deeper understanding of the molecular and cellular mechanisms involved in the pathophysiology of depression, as well as in the action of antidepressants, might provide further insight to drive the development of novel fast-acting and more effective therapies. Here, we summarize the current literature on the involvement of neurotrophic factors in the pathophysiology and treatment of depression. Further, we advocate that future development of antidepressants should be based on the neurotrophin theory.
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Affiliation(s)
- Marion J F Levy
- Centre de Psychiatrie et Neurosciences (Inserm U894), Université Paris Descartes, 102-108 rue de la santé, 75014, Paris, France
- Department of Psychiatry and Neuropsychology, Maastricht University, Maastricht, The Netherlands
- EURON-European Graduate School of Neuroscience, Maastricht, The Netherlands
| | - Fabien Boulle
- Centre de Psychiatrie et Neurosciences (Inserm U894), Université Paris Descartes, 102-108 rue de la santé, 75014, Paris, France
- Department of Psychiatry and Neuropsychology, Maastricht University, Maastricht, The Netherlands
- EURON-European Graduate School of Neuroscience, Maastricht, The Netherlands
| | - Harry W Steinbusch
- Department of Psychiatry and Neuropsychology, Maastricht University, Maastricht, The Netherlands
- EURON-European Graduate School of Neuroscience, Maastricht, The Netherlands
| | - Daniël L A van den Hove
- Department of Psychiatry and Neuropsychology, Maastricht University, Maastricht, The Netherlands
- EURON-European Graduate School of Neuroscience, Maastricht, The Netherlands
- Department of Psychiatry, Psychosomatics and Psychotherapy, University of Wuerzburg, Wuerzburg, Germany
| | - Gunter Kenis
- Department of Psychiatry and Neuropsychology, Maastricht University, Maastricht, The Netherlands
- EURON-European Graduate School of Neuroscience, Maastricht, The Netherlands
| | - Laurence Lanfumey
- Centre de Psychiatrie et Neurosciences (Inserm U894), Université Paris Descartes, 102-108 rue de la santé, 75014, Paris, France.
- EURON-European Graduate School of Neuroscience, Maastricht, The Netherlands.
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Matrov D, Kaart T, Lanfumey L, Maldonado R, Sharp T, Tordera RM, Kelly PA, Deakin B, Harro J. Cerebral oxidative metabolism mapping in four genetic mouse models of anxiety and mood disorders. Behav Brain Res 2018; 356:435-443. [PMID: 29885846 DOI: 10.1016/j.bbr.2018.05.031] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Revised: 05/29/2018] [Accepted: 05/29/2018] [Indexed: 02/06/2023]
Abstract
The psychopathology of depression is highly complex and the outcome of studies on animal models is divergent. In order to find brain regions that could be metabolically distinctively active across a variety of mouse depression models and to compare the interconnectivity of brain regions of wild-type and such genetically modified mice, histochemical mapping of oxidative metabolism was performed by the measurement of cytochrome oxidase activity. We included mice with the heterozygous knockout of the vesicular glutamate transporter (VGLUT1-/+), full knockout of the cannabinoid 1 receptor (CB1-/-), an anti-sense knockdown of the glucocorticoid receptor (GRi) and overexpression of the human 5-hydroxytryptamine transporter (h5-HTT). Altogether 76 mouse brains were studied to measure oxidative metabolism in one hundred brain regions, and the obtained dataset was submitted to a variety of machine learning algorithms and multidimensional scaling. Overall, the top brain regions having the largest contribution to classification into depression model were the lateroanterior hypothalamic nucleus, the anterior part of the basomedial amygdaloid nucleus, claustrum, the suprachiasmatic nucleus, the ventromedial hypothalamic nucleus, and the anterior hypothalamic area. In terms of the patterns of inter-regional relationship between wild-type and genetically modified mice there was little overall difference, while the most deviating brain regions were cortical amygdala and ventrolateral and ventral posteromedial thalamic nuclei. The GRi mice that most clearly differed from their controls exhibited deviation of connectivity for a number of brain regions, such as ventrolateral thalamic nucleus, the intermediate part of the lateral septal nucleus, the anteriodorsal part of the medial amygdaloid nucleus, the medial division of the central amygdaloid nucleus, ventral pallidum, nucleus of the vertical limb of the diagonal band, anteroventral parts of the thalamic nucleus and parts of the bed nucleus of the stria terminalis. Conclusively, the GRi mouse model was characterized by changes in the functional connectivity of the extended amygdala and stress response circuits.
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Affiliation(s)
- Denis Matrov
- Division of Neuropsychopharmacology, Department of Psychology, University of Tartu, Ravila 14A Chemicum, 50411 Tartu, Estonia; Department of Neuroscience, Graduate School of Medicine, Kyoto University, Yoshida-konoe-cho, Sakyo-ku, Kyoto, 606-8501, Japan
| | - Tanel Kaart
- Institute of Veterinary Medicine and Animal Sciences, Estonian University of Life Sciences, Kreutzwaldi 1, 51014 Tartu, Estonia
| | - Laurence Lanfumey
- Centre de Psychiatrie et Neuroscience, INSERM U 894, 2 ter rue d'Alésia, 75014 Paris, France
| | - Rafael Maldonado
- Laboratory of Neuropharmacology, Department of Experimental and Health Sciences, Universitat Pompeu Fabra, Barcelona, Spain
| | - Trevor Sharp
- Department of Pharmacology, University of Oxford, Mansfield Road, Oxford, OX1 3QT, United Kingdom
| | - Rosa M Tordera
- Department of Pharmacology and Toxicology, University of Navarra, Pamplona, Spain
| | - Paul A Kelly
- Centre for Cognitive and Neural Systems, University of Edinburgh, Scotland, United Kingdom
| | - Bill Deakin
- Neuroscience and Psychiatry Unit, Division of Neuroscience and Experimental Psychology, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, United Kingdom
| | - Jaanus Harro
- Division of Neuropsychopharmacology, Department of Psychology, University of Tartu, Ravila 14A Chemicum, 50411 Tartu, Estonia.
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The vagus nerve modulates BDNF expression and neurogenesis in the hippocampus. Eur Neuropsychopharmacol 2018; 28:307-316. [PMID: 29426666 DOI: 10.1016/j.euroneuro.2017.12.004] [Citation(s) in RCA: 76] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Revised: 10/26/2017] [Accepted: 12/02/2017] [Indexed: 12/26/2022]
Abstract
Accumulating evidence suggests that certain gut microbiota have antidepressant-like behavioural effects and that the microbiota can regulate neurogenesis and the expression of brain-derived neurotrophic factor (BDNF) in the hippocampus. The precise mechanisms underlying these effects are not yet clear. However, the vagus nerve is one of the primary bidirectional routes of communication between the gut and the brain and thus may represent a candidate mechanism. Yet, relatively little is known about the direct influence of vagus nerve activity on hippocampal function and plasticity. Thus, the aim of the present study was to determine whether constitutive vagus nerve activity contributes to the regulation of neurogenesis and BDNF mRNA expression in the hippocampus. To this end, we examined the impact of subdiaphragmatic vagotomy in adult mice on these parameters. We found that vagotomy decreased BDNF mRNA in all areas of the hippocampus. Vagotomy also reduced the proliferation and survival of newly born cells and decreased the number of immature neurons, particularly those with a more complex dendritic morphology. Taken together, these findings suggest that vagal nerve activity influences neurogenesis and BDNF mRNA expression in the adult hippocampus.
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Règue-Guyon M, Lanfumey L, Mongeau R. Neuroepigenetics of Neurotrophin Signaling: Neurobiology of Anxiety and Affective Disorders. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2018; 158:159-193. [DOI: 10.1016/bs.pmbts.2018.03.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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18
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Lapmanee S, Charoenphandhu J, Teerapornpuntakit J, Krishnamra N, Charoenphandhu N. Agomelatine, venlafaxine, and running exercise effectively prevent anxiety- and depression-like behaviors and memory impairment in restraint stressed rats. PLoS One 2017; 12:e0187671. [PMID: 29099859 PMCID: PMC5669450 DOI: 10.1371/journal.pone.0187671] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Accepted: 10/24/2017] [Indexed: 12/23/2022] Open
Abstract
Several severe stressful situations, e.g., natural disaster, infectious disease out break, and mass casualty, are known to cause anxiety, depression and cognitive impairment, and preventive intervention for these stress complications is worth exploring. We have previously reported that the serotonin-norepinephrine-dopamine reuptake inhibitor, venlafaxine, as well as voluntary wheel running are effective in the treatment of anxiety- and depression-like behaviors in stressed rats. But whether they are able to prevent deleterious consequences of restraint stress in rats, such as anxiety/depression-like behaviors and memory impairment that occur afterward, was not known. Herein, male Wistar rats were pre-treated for 4 weeks with anti-anxiety/anti-depressive drugs, agomelatine and venlafaxine, or voluntary wheel running, followed by 4 weeks of restraint-induced stress. During the stress period, rats received neither drug nor exercise intervention. Our results showed that restraint stress induced mixed anxiety- and depression-like behaviors, and memory impairment as determined by elevated plus-maze, elevated T-maze, open field test (OFT), forced swimming test (FST), and Morris water maze (MWM). Both pharmacological pre-treatments and running successfully prevented the anxiety-like behavior, especially learned fear, in stressed rats. MWM test suggested that agomelatine, venlafaxine, and running could prevent stress-induced memory impairment, but only pharmacological treatments led to better novel object recognition behavior and positive outcome in FST. Moreover, western blot analysis demonstrated that venlafaxine and running exercise upregulated brain-derived neurotrophic factor (BDNF) expression in the hippocampus. In conclusion, agomelatine, venlafaxine as well as voluntary wheel running had beneficial effects, i.e., preventing the restraint stress-induced anxiety/depression-like behaviors and memory impairment.
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Affiliation(s)
- Sarawut Lapmanee
- Department of Physiology, Faculty of Science, Mahidol University, Bangkok, Thailand
- Center of Calcium and Bone Research (COCAB), Faculty of Science, Mahidol University, Bangkok, Thailand
| | - Jantarima Charoenphandhu
- Physiology Division, Preclinical Sciences, Faculty of Medicine, Thammasat University, Pathumthani, Thailand
- * E-mail:
| | - Jarinthorn Teerapornpuntakit
- Center of Calcium and Bone Research (COCAB), Faculty of Science, Mahidol University, Bangkok, Thailand
- Department of Physiology, Faculty of Medical Science, Naresuan University, Phitsanulok, Thailand
| | - Nateetip Krishnamra
- Department of Physiology, Faculty of Science, Mahidol University, Bangkok, Thailand
- Center of Calcium and Bone Research (COCAB), Faculty of Science, Mahidol University, Bangkok, Thailand
| | - Narattaphol Charoenphandhu
- Department of Physiology, Faculty of Science, Mahidol University, Bangkok, Thailand
- Center of Calcium and Bone Research (COCAB), Faculty of Science, Mahidol University, Bangkok, Thailand
- Institute of Molecular Biosciences, Mahidol University, Nakhon Pathom, Thailand
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Kozareva DA, O'Leary OF, Cryan JF, Nolan YM. Deletion of TLX and social isolation impairs exercise-induced neurogenesis in the adolescent hippocampus. Hippocampus 2017; 28:3-11. [DOI: 10.1002/hipo.22805] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Revised: 09/07/2017] [Accepted: 09/20/2017] [Indexed: 12/19/2022]
Affiliation(s)
- Danka A. Kozareva
- Department of Anatomy and Neuroscience; University College Cork; Ireland
- APC Microbiome Institute; University College Cork; Ireland
| | - Olivia F. O'Leary
- Department of Anatomy and Neuroscience; University College Cork; Ireland
- APC Microbiome Institute; University College Cork; Ireland
| | - John F. Cryan
- Department of Anatomy and Neuroscience; University College Cork; Ireland
- APC Microbiome Institute; University College Cork; Ireland
| | - Yvonne M. Nolan
- Department of Anatomy and Neuroscience; University College Cork; Ireland
- APC Microbiome Institute; University College Cork; Ireland
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Martin V, Allaïli N, Euvrard M, Marday T, Riffaud A, Franc B, Mocaër E, Gabriel C, Fossati P, Lehericy S, Lanfumey L. Effect of agomelatine on memory deficits and hippocampal gene expression induced by chronic social defeat stress in mice. Sci Rep 2017; 8:45907. [PMID: 28374847 PMCID: PMC5379201 DOI: 10.1038/srep45907] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Accepted: 03/06/2017] [Indexed: 01/08/2023] Open
Abstract
Chronic stress is known to induce not only anxiety and depressive-like phenotypes in mice but also cognitive impairments, for which the action of classical antidepressant compounds remains unsatisfactory. In this context, we investigated the effects of chronic social defeat stress (CSDS) on anxiety-, social- and cognitive-related behaviors, as well as hippocampal Bdnf, synaptic plasticity markers (PSD-95, Synaptophysin, Spinophilin, Synapsin I and MAP-2), and epigenetic modifying enzymes (MYST2, HDAC2, HDAC6, MLL3, KDM5B, DNMT3B, GADD45B) gene expression in C57BL/6J mice. CSDS for 10 days provoked long-lasting anxious-like phenotype in the open field and episodic memory deficits in the novel object recognition test. While total Bdnf mRNA level was unchanged, Bdnf exon IV, MAP-2, HDAC2, HDAC6 and MLL3 gene expression was significantly decreased in the CSDS mouse hippocampus. In CSDS mice treated 3 weeks with 50 mg/kg/d agomelatine, an antidepressant with melatonergic receptor agonist and 5-HT2C receptor antagonist properties, the anxious-like phenotype was not reversed, but the treatment successfully prevented the cognitive impairments and hippocampal gene expression modifications. Altogether, these data evidenced that, in mice, agomelatine was effective in alleviating stress-induced altered cognitive functions, possibly through a mechanism involving BDNF signaling, synaptic plasticity and epigenetic remodeling.
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Affiliation(s)
- Vincent Martin
- Centre de Psychiatrie et Neurosciences, INSERM UMR 894, Université Paris Descartes, Paris, France
| | - Najib Allaïli
- Centre de NeuroImagerie de Recherche - CENIR- Inserm UMR1127- CNRS 7225, Institut Cerveau Moelle - ICM, Sorbonne Universités, UPMC UMR S 1127, Paris, France
| | - Marine Euvrard
- Centre de Psychiatrie et Neurosciences, INSERM UMR 894, Université Paris Descartes, Paris, France
| | - Tevrasamy Marday
- Centre de Psychiatrie et Neurosciences, INSERM UMR 894, Université Paris Descartes, Paris, France
| | - Armance Riffaud
- Centre de Psychiatrie et Neurosciences, INSERM UMR 894, Université Paris Descartes, Paris, France
| | - Bernard Franc
- Centre de Psychiatrie et Neurosciences, INSERM UMR 894, Université Paris Descartes, Paris, France
| | - Elisabeth Mocaër
- Institut de Recherches Internationales Servier, IRIS, Suresnes, France
| | - Cecilia Gabriel
- Institut de Recherches Internationales Servier, IRIS, Suresnes, France
| | - Philippe Fossati
- Social and Affective Neuroscience - SAN Laboratory - Inserm U 1127- CNRS UMR 7225- Institut du Cerveau et de la Moelle- ICM - Sorbonne Universités, UPMC UMR S 1127, Paris, France
| | - Stéphane Lehericy
- Centre de NeuroImagerie de Recherche - CENIR- Inserm UMR1127- CNRS 7225, Institut Cerveau Moelle - ICM, Sorbonne Universités, UPMC UMR S 1127, Paris, France
| | - Laurence Lanfumey
- Centre de Psychiatrie et Neurosciences, INSERM UMR 894, Université Paris Descartes, Paris, France
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Laux G, Barthel B, Hajak G, Lemke M, Volz HP. Pooled Analysis of Four Non-Interventional Studies: Effectiveness and Tolerability of the Antidepressant Agomelatine in Daily Practice. Adv Ther 2017; 34:895-914. [PMID: 28214983 DOI: 10.1007/s12325-017-0485-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2016] [Indexed: 02/03/2023]
Abstract
INTRODUCTION Meta-analyses are useful to increase knowledge and strengthen evidence about antidepressant treatment supplementary to individual studies. METHODS A pooled analysis of four multicenter, open-label, prospective, non-interventional studies (2009-2013) was performed to provide further evidence about the antidepressant effectiveness and tolerability of agomelatine (25-50 mg/day) in a large number of non-selected German outpatients with major depressive disorder. The main analysis was performed after 12 weeks (n = 9601) and in subpopulations after 24 and 52 weeks by descriptive statistical methods. RESULTS Overall, 60.1% of patients were pretreated with antidepressants. Concomitant psychiatric diseases (71.9%), co-medication with antidepressants (18.9%) and/or psychotropic medication (31.9%) were observed. Depressive symptoms improved according to the Clinical Global Impression (CGI) in 81% after 12 weeks, a response was observed in 78.7% (CGI-I ≤2), and remission in 34.5% of patients (CGI-S = 1 or 2). In subpopulations, response was documented in 79.3% (W24) and 75.9% (W52) and remission in 38.1% (W24) and 47.5% (W52), respectively. Over 12 weeks, adverse drug reactions (ADRs) were reported for 511 patients (5.32%), most frequently headache (0.92%) and nausea (0.75%), and serious adverse drug reactions (sADR) for 18 patients (0.19%). Between W12-W24 and W24-W52, ADRs were reported for 0.49%/0.99% and sADRs for 0.05%/0%, respectively. Overall, 49 patients (0.5%) showed clinically relevant transaminase elevations (AST/ALT >3 times upper normal value), with 19 patients (0.2%) showing preexisting elevations at the study start. One patient (0.03%) developed hepatitis with reversible symptoms after treatment discontinuation. ADR predominantly occurred within the first weeks of treatment. Mean weight and body mass index (BMI) remained unchanged over 24 weeks. CONCLUSION In this pooled data analysis, 9601 depressed patients of clinical practice were evaluated over 12 weeks and subpopulations were also analyzed over 24 and 52 weeks. Agomelatine effectively reduced depressive symptoms (CGI-response and remission) with good general tolerability.
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HDAC7 Ubiquitination by the E3 Ligase CBX4 Is Involved in Contextual Fear Conditioning Memory Formation. J Neurosci 2017; 37:3848-3863. [PMID: 28283560 DOI: 10.1523/jneurosci.2773-16.2017] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Revised: 02/24/2017] [Accepted: 03/01/2017] [Indexed: 12/18/2022] Open
Abstract
Histone acetylation, an epigenetic modification, plays an important role in long-term memory formation. Recently, histone deacetylase (HDAC) inhibitors were demonstrated to promote memory formation, which raises the intriguing possibility that they may be used to rescue memory deficits. However, additional research is necessary to clarify the roles of individual HDACs in memory. In this study, we demonstrated that HDAC7, within the dorsal hippocampus of C57BL6J mice, had a late and persistent decrease after contextual fear conditioning (CFC) training (4-24 h), which was involved in long-term CFC memory formation. We also showed that HDAC7 decreased via ubiquitin-dependent degradation. CBX4 was one of the HDAC7 E3 ligases involved in this process. Nur77, as one of the target genes of HDAC7, increased 6-24 h after CFC training and, accordingly, modulated the formation of CFC memory. Finally, HDAC7 was involved in the formation of other hippocampal-dependent memories, including the Morris water maze and object location test. The current findings facilitate an understanding of the molecular and cellular mechanisms of HDAC7 in the regulation of hippocampal-dependent memory.SIGNIFICANCE STATEMENT The current findings demonstrated the effects of histone deacetylase 7 (HDAC7) on hippocampal-dependent memories. Moreover, we determined the mechanism of decreased HDAC7 in contextual fear conditioning (CFC) through ubiquitin-dependent protein degradation. We also verified that CBX4 was one of the HDAC7 E3 ligases. Finally, we demonstrated that Nur77, as one of the important targets for HDAC7, was involved in CFC memory formation. All of these proteins, including HDAC7, CBX4, and Nur77, could be potential therapeutic targets for preventing memory deficits in aging and neurological diseases.
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Pazini FL, Cunha MP, Azevedo D, Rosa JM, Colla A, de Oliveira J, Ramos-Hryb AB, Brocardo PS, Gil-Mohapel J, Rodrigues ALS. Creatine Prevents Corticosterone-Induced Reduction in Hippocampal Proliferation and Differentiation: Possible Implication for Its Antidepressant Effect. Mol Neurobiol 2016; 54:6245-6260. [DOI: 10.1007/s12035-016-0148-0] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Accepted: 09/19/2016] [Indexed: 01/13/2023]
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Zhou WJ, Xu N, Kong L, Sun SC, Xu XF, Jia MZ, Wang Y, Chen ZY. The antidepressant roles of Wnt2 and Wnt3 in stress-induced depression-like behaviors. Transl Psychiatry 2016; 6:e892. [PMID: 27622936 PMCID: PMC5048193 DOI: 10.1038/tp.2016.122] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Revised: 04/23/2016] [Accepted: 05/09/2016] [Indexed: 12/14/2022] Open
Abstract
Wnts-related signaling pathways have been reported to play roles in the pathogenesis of stress-induced depression-like behaviors. However, there is relatively few direct evidence to indicate the effect of Wnt ligands on this process. Here, we investigated the role of Wnts in mediating chronic restraint stress (CRS)-induced depression-like behaviors. We found that CRS induced a significant decrease in the expression of Wnt2 and Wnt3 in the ventral hippocampus (VH) but not in the dorsal hippocampus. Knocking down Wnt2 or Wnt3 in the VH led to impaired Wnt/β-catenin signaling, neurogenesis deficits and depression-like behaviors. In contrast, overexpression of Wnt2 or Wnt3 reversed CRS-induced depression-like behaviors. Moreover, Wnt2 and Wnt3 activated cAMP response element-binding protein (CREB) and there was CREB-dependent positive feedback between Wnt2 and Wnt3. Finally, fluoxetine treatment increased Wnt2 and Wnt3 levels in the VH and knocking down Wnt2 or Wnt3 abolished the antidepressant effect of fluoxetine. Taken together, our study indicates essential roles for Wnt2 and Wnt3 in CRS-induced depression-like behaviors and antidepressant.
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Affiliation(s)
- W-J Zhou
- Department of Neurobiology, Shandong Provincial Key Laboratory of Mental Disorders, CAS Center for Excellence in Brain Science and Intelligence Technology, School of Medicine, Shandong University, Jinan, Shandong, China
| | - N Xu
- Department of Neurobiology, Shandong Provincial Key Laboratory of Mental Disorders, CAS Center for Excellence in Brain Science and Intelligence Technology, School of Medicine, Shandong University, Jinan, Shandong, China
- Department of Clinical Laboratory, Second Hospital of Shandong University, Jinan, Shandong, China
| | - L Kong
- Department of Neurobiology, Shandong Provincial Key Laboratory of Mental Disorders, CAS Center for Excellence in Brain Science and Intelligence Technology, School of Medicine, Shandong University, Jinan, Shandong, China
| | - S-C Sun
- Department of Neurobiology, Shandong Provincial Key Laboratory of Mental Disorders, CAS Center for Excellence in Brain Science and Intelligence Technology, School of Medicine, Shandong University, Jinan, Shandong, China
| | - X-F Xu
- Department of Neurobiology, Shandong Provincial Key Laboratory of Mental Disorders, CAS Center for Excellence in Brain Science and Intelligence Technology, School of Medicine, Shandong University, Jinan, Shandong, China
| | - M-Z Jia
- Department of Neurobiology, Shandong Provincial Key Laboratory of Mental Disorders, CAS Center for Excellence in Brain Science and Intelligence Technology, School of Medicine, Shandong University, Jinan, Shandong, China
| | - Y Wang
- Department of Neurobiology, Shandong Provincial Key Laboratory of Mental Disorders, CAS Center for Excellence in Brain Science and Intelligence Technology, School of Medicine, Shandong University, Jinan, Shandong, China
| | - Z-Y Chen
- Department of Neurobiology, Shandong Provincial Key Laboratory of Mental Disorders, CAS Center for Excellence in Brain Science and Intelligence Technology, School of Medicine, Shandong University, Jinan, Shandong, China
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Kasap M, Can ÖD. Opioid system mediated anti-nociceptive effect of agomelatine in mice. Life Sci 2016; 163:55-63. [PMID: 27590609 DOI: 10.1016/j.lfs.2016.08.031] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Revised: 08/18/2016] [Accepted: 08/29/2016] [Indexed: 11/16/2022]
Abstract
AIMS This study was planned to examine the antinociceptive efficacy of agomelatine against acute mechanical, thermal, and chemical nociceptive stimuli, as well as to determine the opioid receptor subtypes mediating these effects. MAIN METHODS Tail-clip, hot-plate, and acetic acid-induced writhing tests were performed to evaluate anti-nociceptive effect. Besides, possible effect of agomelatine on the motor coordination of animals was assessed with a Rota-rod test. KEY FINDINGS Agomelatine (40mg/kg and 60mg/kg) significantly prolonged the reaction time of mice in both the tail-clip and hot-plate tests, suggesting the antinociceptive activity is related to both spinal and supraspinal mechanisms. This drug also reduced the number of writhing behaviors indicating the presence of a peripherally mediated antinociceptive effect. Rota-rod testing displayed no notable effect on the motor activity of the animal supporting the conclusion that the observed antinociceptive effect is specific. The agomelatine-induced antinociceptive activity abrogated following pretreatment with naloxone (a non-selective opioid receptor antagonist, 5.48mg/kg, i.p.), which suggested the participation of opioid mechanisms to the antinociception. The possible contribution of μ, δ and ҡ subtypes of opioid receptors to the anti-nociceptive effect were evaluated using naloxonazine (7mg/kg, s.c.), naltrindole (0.99mg/kg, i.p.), and nor-binaltorphimine (1.03mg/kg, i.p.), respectively. Pretreatments using these antagonists abolished the antinociceptive activity of agomelatine in all of the nociceptive test paradigms used, which pointed out that μ, δ, and ҡ opioid receptors participated to the action of agomelatine on pain. SIGNIFICANCE These results demonstrated the therapeutic potential of agomelatine in the treatment of pain disorders.
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Affiliation(s)
- Merve Kasap
- Anadolu University Graduate School of Health Sciences, Department of Pharmacology, 26470 Eskişehir, Turkey
| | - Özgür Devrim Can
- Anadolu University, Faculty of Pharmacy, Department of Pharmacology, 26470 Eskişehir, Turkey.
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Thomas J, Khanam R, Vohora D. Augmentation of antidepressant effects of venlafaxine by agomelatine in mice are independent of kynurenine pathway. Neurochem Int 2016; 99:103-109. [PMID: 27311540 DOI: 10.1016/j.neuint.2016.06.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2016] [Revised: 05/18/2016] [Accepted: 06/10/2016] [Indexed: 10/24/2022]
Abstract
Agomelatine is a novel antidepressant with agonistic actions at melatonergic (MT1 and MT2 receptors) and antagonistic actions at 5HT-2C receptors. Venlafaxine, a serotonin norepinephrine reuptake inhibitor, is a widely prescribed drug in depression. The present study evaluated the low dose combinations of venlafaxine and agomelatine in chronic forced swim test (chronic FST) and tail suspension test (TST) in mice. Further, the effect of above drugs and their combination was evaluated on serum pro-inflammatory cytokines and hippocampal indole amine 2, 3 dioxygenase (IDO) activity by calculating the ratios of kynurenine/tryptophan (KYN/TRP) and serotonin/tryptophan (5HT/TRP). Treatment of agomelatine (4 mg/kg, i.p.) in combination with venlafaxine (4 mg/kg, i.p.) for 3 weeks showed a significant augmenting effect on both swimming and immobility time in chronic FST and immobility time in TST as compared to animals treated with either drug alone. While venlafaxine (4 mg/kg) reversed the elevated serum levels of IL-1β and IL-6 found in chronically stressed mice, agomelatine (4 and 8 mg/kg) failed to show such a reversal. Agomelatine alone and in combination also failed to reverse the increased activity of IDO as observed by enhanced KYN/TRP and reduced 5HT/TRP seen in chronically stressed mice indicating that the augmented antidepressant effect of venlafaxine by agomelatine is not mediated by pro-inflammatory cytokine-induced activation of IDO and further, kynurenine pathway.
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Affiliation(s)
- Jaya Thomas
- Neurobehavioral Pharmacology Laboratory, Department of Pharmacology, Faculty of Pharmacy, Jamia Hamdard, New Delhi 110062, India
| | - R Khanam
- Neurobehavioral Pharmacology Laboratory, Department of Pharmacology, Faculty of Pharmacy, Jamia Hamdard, New Delhi 110062, India
| | - Divya Vohora
- Neurobehavioral Pharmacology Laboratory, Department of Pharmacology, Faculty of Pharmacy, Jamia Hamdard, New Delhi 110062, India.
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Kazemi M, Shokri S, Ganjkhani M, Ali R, Iraj JA. Modulation of axonal sprouting along rostro-caudal axis of dorsal hippocampus and no neuronal survival in parahippocampal cortices by long-term post-lesion melatonin administration in lithium-pilocarpine model of temporal lobe epilepsy. Anat Cell Biol 2016; 49:21-33. [PMID: 27051565 PMCID: PMC4819075 DOI: 10.5115/acb.2016.49.1.21] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Revised: 12/16/2015] [Accepted: 12/24/2015] [Indexed: 12/15/2022] Open
Abstract
Feature outcome of hippocampus and extra-hippocampal cortices was evaluated in melatonin treated lithium-pilocarpine epileptic rats during early and chronic phases of temporal lobe epilepsy (TLE). After status epilepticus (SE) induction, 5 and 20 mg/kg melatonin were administered for 14 days or 60 days. All animals were killed 60 days post SE induction and the histological features of the rosrto-caudal axis of the dorsal hippocampus, piriform and entorhinal cortices were evaluated utilizing Nissl, Timm, and synapsin I immunoflorescent staining. Melatonin (20 mg/kg) effect on CA1 and CA3 neurons showed a region-specific pattern along the rostro-caudal axis of the dorsal hippocampus. The number of counted granular cells by melatonin (20 mg/kg) treatment increased along the rostro-caudal axis of the dorsal hippocampus in comparison to the untreated epileptic group. The density of Timm granules in the inner molecular layer of the dentate gyrus decreased significantly in all melatonin treated groups in comparison to the untreated epileptic animals. The increased density of synapsin I immunoreactivity in the outer molecular layer of the dentate gyrus of untreated epileptic rats showed a profound decrease following melatonin treatment. There was no neuronal protection in the piriform and entorhinal cortices whatever the melatonin treatment. Long-term melatonin administration as a co-adjuvant probably could reduce the post-lesion histological consequences of TLE in a region-specific pattern along the rostro-caudal axis of the dorsal hippocampus.
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Affiliation(s)
- Mahsa Kazemi
- Department of Physiology, Faculty of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Saeed Shokri
- Department of Anatomical Sciences, Faculty of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Mahin Ganjkhani
- Department of Physiology, Faculty of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Rostami Ali
- Department of Physiology, Faculty of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Jafari Anarkooli Iraj
- Department of Anatomical Sciences, Faculty of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran
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Martinotti G, Pettorruso M, De Berardis D, Varasano PA, Lucidi Pressanti G, De Remigis V, Valchera A, Ricci V, Di Nicola M, Janiri L, Biggio G, Di Giannantonio M. Agomelatine Increases BDNF Serum Levels in Depressed Patients in Correlation with the Improvement of Depressive Symptoms. Int J Neuropsychopharmacol 2016; 19:pyw003. [PMID: 26775293 PMCID: PMC4886672 DOI: 10.1093/ijnp/pyw003] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Accepted: 01/11/2016] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND Agomelatine modulates brain-derived neurotrophic factor expression via its interaction with melatonergic and serotonergic receptors and has shown promising results in terms of brain-derived neurotrophic factor increase in animal models. METHODS Twenty-seven patients were started on agomelatine (25mg/d). Venous blood was collected and brain-derived neurotrophic factor serum levels were measured at baseline and after 2 and 8 weeks along with a clinical assessment, including Hamilton Depression Rating Scale and Snaith-Hamilton Pleasure Scale. RESULTS Brain-derived neurotrophic factor serum concentration increased after agomelatine treatment. Responders showed a significant increase in brain-derived neurotrophic factor levels after 2 weeks of agomelatine treatment; no difference was observed in nonresponders. Linear regression analysis showed that more prominent brain-derived neurotrophic factor level variation was associated with lower baseline BDNF levels and greater anhedonic features at baseline. CONCLUSIONS Patients affected by depressive disorders showed an increase of brain-derived neurotrophic factor serum concentration after a 2-week treatment with agomelatine. The increase of brain-derived neurotrophic factor levels was found to be greater in patients with lower brain-derived neurotrophic factor levels and marked anhedonia at baseline.
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Affiliation(s)
- Giovanni Martinotti
- Department of Neuroscience, Imaging, and Clinical Sciences, University "G.d'Annunzio", Chieti, Italy (Drs Martinotti, De Berardis, and Di Giannantonio); Institute of Psychiatry and Psychology, Catholic University of the Sacred Hearth, Rome, Italy (Drs Pettorruso, Di Nicola, and Janiri); Department of Immunohematology and Transfusional Medicine, "G. Mazzini" Hospital, Teramo, Italy (Drs Varasano, Lucidi Pressanti, and De Remigis); Hermanas Hospitalarias, FoRiPsi, Villa S. Giuseppe Hospital, Ascoli Piceno, Italy (Dr Valchera); Department of Psychiatry, ASL Valle d'Aosta, Italy (Dr Ricci); Department of Life and Environmental Sciences, Institute of Neuroscience, CNR, University of Cagliari, Cagliari, Italy (Dr Biggio).
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Boulle F, Velthuis H, Koedam K, Steinbusch HW, van den Hove DLA, Kenis G, Gabriel C, Mocaer E, Franc B, Rognan D, Mongeau R, Lanfumey L. Behavioral and neurochemical characterization of TrkB-dependent mechanisms of agomelatine in glucocorticoid receptor-impaired mice. Eur Neuropsychopharmacol 2016; 26:65-77. [PMID: 26653128 DOI: 10.1016/j.euroneuro.2015.11.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Revised: 09/30/2015] [Accepted: 11/08/2015] [Indexed: 12/13/2022]
Abstract
Growing evidence indicates that impairment of the stress response, in particular the negative feedback regulation mechanism exerted by the hypothalamo-pituitary-adrenal (HPA) axis, might be responsible for the hippocampal atrophy observed in depressed patients. Antidepressants, possibly through the activation of BDNF signaling, may enhance neuroplasticity and restore normal hippocampal functions. In this context, glucocorticoid receptor-impaired (GR-i) mice-a transgenic mouse model of reduced GR-induced negative feedback regulation of the HPA axis-were used to investigate the role of BDNF/TrkB signaling in the behavioral and neurochemical effects of the new generation antidepressant drug, agomelatine. GR-i mice exhibited marked alterations in depressive-like and anxiety-like behaviors, together with a decreased cell proliferation and altered levels of neuroplastic and epigenetic markers in the hippocampus. GR-i mice and their wild-type littermates were treated for 21 days with vehicle, agomelatine (50mg/kg/day; i.p) or the TrkB inhibitor Ana-12 (0.5mg/kg/day, i.p) alone, or in combination with agomelatine. Chronic treatment with agomelatine resulted in antidepressant-like effects in GR-i mice and reversed the deficit in hippocampal cell proliferation and some of the alterations of mRNA plasticity markers in GR-i mice. Ana-12 blocked the effect of agomelatine on motor activity as well as its ability to restore a normal hippocampal cell proliferation and expression of neurotrophic factors. Altogether, our findings indicate that agomelatine requires TrkB signaling to reverse some of the molecular and behavioral alterations caused by HPA axis impairment.
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Affiliation(s)
- F Boulle
- Centre de Psychiatrie et Neurosciences, Inserm UMR 894, Paris, France; Université Paris Descartes, UMR S894, Paris, France; Department of Psychiatry and Neuropsychology, European Graduate School for Neuroscience (EURON), Maastricht University, Maastricht, The Netherlands
| | - H Velthuis
- Centre de Psychiatrie et Neurosciences, Inserm UMR 894, Paris, France; Université Paris Descartes, UMR S894, Paris, France
| | - K Koedam
- Department of Psychiatry and Neuropsychology, European Graduate School for Neuroscience (EURON), Maastricht University, Maastricht, The Netherlands
| | - H W Steinbusch
- Department of Psychiatry and Neuropsychology, European Graduate School for Neuroscience (EURON), Maastricht University, Maastricht, The Netherlands
| | - D L A van den Hove
- Department of Psychiatry and Neuropsychology, European Graduate School for Neuroscience (EURON), Maastricht University, Maastricht, The Netherlands; Department of Psychiatry, Psychosomatics and Psychotherapy, University of Wuerzburg, Wuerzburg, Germany
| | - G Kenis
- Department of Psychiatry and Neuropsychology, European Graduate School for Neuroscience (EURON), Maastricht University, Maastricht, The Netherlands
| | - C Gabriel
- Institut de Recherche International Servier, Suresnes, France
| | - E Mocaer
- Institut de Recherche International Servier, Suresnes, France
| | - B Franc
- Centre de Psychiatrie et Neurosciences, Inserm UMR 894, Paris, France; Université Paris Descartes, UMR S894, Paris, France
| | - D Rognan
- Laboratoire d'Innovation Thérepeutique, UMR 7200 CNRS, Université de Strasbourg, Illkirch, France
| | - R Mongeau
- Centre de Psychiatrie et Neurosciences, Inserm UMR 894, Paris, France; Université Paris Descartes, UMR S894, Paris, France; EA4475, Pharmacology department, University Paris Descartes, Paris, France
| | - L Lanfumey
- Centre de Psychiatrie et Neurosciences, Inserm UMR 894, Paris, France; Université Paris Descartes, UMR S894, Paris, France.
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Tchekalarova J, Moyanova S, Fusco AD, Ngomba RT. The role of the melatoninergic system in epilepsy and comorbid psychiatric disorders. Brain Res Bull 2015; 119:80-92. [DOI: 10.1016/j.brainresbull.2015.08.006] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2015] [Revised: 08/04/2015] [Accepted: 08/24/2015] [Indexed: 01/01/2023]
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Baranova KA, Rybnikova EA, Samoilov MO. The neurotrophin BDNF is involved in the development and prevention of stress-induced psychopathologies. NEUROCHEM J+ 2015. [DOI: 10.1134/s1819712415020038] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Ethanol-induced epigenetic regulations at the Bdnf gene in C57BL/6J mice. Mol Psychiatry 2015; 20:405-12. [PMID: 24776738 DOI: 10.1038/mp.2014.38] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2013] [Revised: 02/12/2014] [Accepted: 03/17/2014] [Indexed: 02/06/2023]
Abstract
High ethanol intake is well known to induce both anxiolytic and anxiogenic effects, in correlation with chromatin remodeling in the amygdaloid brain region and deficits in cell proliferation and survival in the hippocampus of rodents. Whether only moderate but chronic ethanol intake in C57BL/6J mice could also have an impact on chromatin remodeling and neuroplasticity was addressed here. Chronic ethanol consumption in a free choice paradigm was found to induce marked changes in the expression of genes implicated in neural development and histone post-translational modifications in the mouse hippocampus. Transcripts encoding neural bHLH activators and those from Bdnf exons II, III and VI were upregulated, whereas those from Bdnf exon VIII and Hdacs were downregulated by ethanol compared with water consumption. These ethanol-induced changes were associated with enrichment in both acetylated H3 at Bdnf promoter PVI and trimethylated H3 at PII and PIII. Conversely, acetylated H3 at PIII and PVIII and trimethylated H3 at PVIII were decreased in ethanol-exposed mice. In parallel, hippocampal brain-derived neurotrophic factor (BDNF) levels and TrkB-mediated neurogenesis in the dentate gyrus were significantly enhanced by ethanol consumption. These results suggest that, in C57BL/6J mice, chronic and moderate ethanol intake produces marked epigenetic changes underlying BDNF overexpression and downstream hippocampal neurogenesis.
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Grillo C, Risher M, Macht V, Bumgardner A, Hang A, Gabriel C, Mocaër E, Piroli G, Fadel J, Reagan L. Repeated restraint stress-induced atrophy of glutamatergic pyramidal neurons and decreases in glutamatergic efflux in the rat amygdala are prevented by the antidepressant agomelatine. Neuroscience 2015; 284:430-443. [DOI: 10.1016/j.neuroscience.2014.09.047] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2014] [Revised: 09/18/2014] [Accepted: 09/23/2014] [Indexed: 12/31/2022]
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Laste G, Ripoll Rozisky J, Caumo W, Lucena da Silva Torres I. Short- but not long-term melatonin administration reduces central levels of brain-derived neurotrophic factor in rats with inflammatory pain. Neuroimmunomodulation 2015; 22:358-64. [PMID: 25871298 DOI: 10.1159/000380912] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2014] [Accepted: 02/11/2015] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVE To evaluate the effect of short- and long-term administration of melatonin on central brain-derived neurotrophic factor (BDNF) levels in rats with acute and chronic inflammatory pain. METHODS The animals were allocated to one of two experiments: experiment 1 or experiment 2. In experiment 1, all animals were injected with complete Freund's adjuvant (CFA) to induce inflammation and were randomly allocated to receiving melatonin (60 mg/kg) or vehicle. Injections were administered 1 h after CFA and once daily for 2 more days (for a total of 3 days of melatonin administration). In experiment 2, fifteen days after CFA injection, the animals were treated with melatonin (50 mg/kg) or vehicle for 8 days. The animals were killed by decapitation 24 h after the last melatonin or vehicle administration, and an ELISA assay was performed to detect BDNF expression in the spinal cord, brainstem, and prefrontal cortex of the rats in both groups. Data were analyzed using Student's t test and the results are expressed as means ± SEM. RESULTS In the first experiment, the BDNF levels of the melatonin group were reduced in the prefrontal cortex (Student's t test, p = 0.01) and increased in the spinal cord (Student's t test, p = 0.04). In experiment 2, BDNF levels were similar in both groups for all structures (Student's t test, p > 0.00 for all). A two-way ANOVA reveled a significant effect of structures (p = 0.0001) but not of treatment (p > 0.05). The prefrontal cortex presented higher BDNF levels than other structures (ANOVA/Student-Newman-Keuls test, p = 0.0001). Considering the relationship between BDNF levels in all three structures, we found an effect of central nervous system structures (p = 0.01) and an interaction between treatment and structures (p = 0.04). CONCLUSION The high spinal cord BDNF levels and the low prefrontal cortical BDNF levels observed in rats with acute CFA-induced inflammation following short-term melatonin administration may be related to the pain-modulating and neuroprotective effects of this protein. Long-term melatonin administration did not alter BDNF levels in chronic inflammation.
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Affiliation(s)
- Gabriela Laste
- Pain Pharmacology and Neuromodulation, Animal Models Laboratory, Pharmacology Department, Instituto de Cix00EA;ncias Bx00E1;sicas da Sax00FA;de, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
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Boulle F, Massart R, Stragier E, Païzanis E, Zaidan L, Marday S, Gabriel C, Mocaer E, Mongeau R, Lanfumey L. Hippocampal and behavioral dysfunctions in a mouse model of environmental stress: normalization by agomelatine. Transl Psychiatry 2014; 4:e485. [PMID: 25423137 PMCID: PMC4259995 DOI: 10.1038/tp.2014.125] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Revised: 10/16/2014] [Accepted: 10/19/2014] [Indexed: 12/30/2022] Open
Abstract
Stress-induced alterations in neuronal plasticity and in hippocampal functions have been suggested to be involved in the development of mood disorders. In this context, we investigated in the hippocampus the activation of intracellular signaling cascades, the expression of epigenetic markers and plasticity-related genes in a mouse model of stress-induced hyperactivity and of mixed affective disorders. We also determined whether the antidepressant drug agomelatine, a MT1/MT2 melatonergic receptor agonist/5-HT2C receptor antagonist, could prevent some neurobiological and behavioral alterations produced by stress. C57BL/6J mice, exposed for 3 weeks to daily unpredictable socio-environmental stressors of mild intensity, were treated during the whole procedure with agomelatine (50 mg kg(-1) per day, intraperitoneal). Stressed mice displayed robust increases in emotional arousal, vigilance and motor activity, together with a reward deficit and a reduction in anxiety-like behavior. Neurobiological investigations showed an increased phosphorylation of intracellular signaling proteins, including Atf1, Creb and p38, in the hippocampus of stressed mice. Decreased hippocampal level of the repressive epigenetic marks HDAC2 and H3K9me2, as well as increased level of the permissive mark H3K9/14ac suggested that chronic mild stress was associated with increased gene transcription, and clear-cut evidence was further indicated by changes in neuroplasticity-related genes, including Arc, Bcl2, Bdnf, Gdnf, Igf1 and Neurod1. Together with other findings, the present data suggest that chronic ultra-mild stress can model the hyperactivity or psychomotor agitation, as well as the mixed affective behaviors often observed during the manic state of bipolar disorder patients. Interestingly, agomelatine could normalize both the behavioral and the molecular alterations induced by stress, providing further insights into the mechanism of action of this new generation antidepressant drug.
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Affiliation(s)
- F Boulle
- Centre de Psychiatrie et Neurosciences, INSERM UMR 894, Paris, France,Department of Psychiatry and Neuropsychology, Maastricht University, Maastricht, The Netherlands,European Graduate School for Neuroscience (EURON), Maastricht, The Netherlands,Université Paris Descartes Paris 5, Paris, France
| | - R Massart
- Department of Pharmacology and Therapeutics, McGill University, Montreal, Quebec, Canada
| | - E Stragier
- Centre de Psychiatrie et Neurosciences, INSERM UMR 894, Paris, France,UPMC, Université Paris 6, UMR S677, Paris, France
| | - E Païzanis
- Centre de Psychiatrie et Neurosciences, INSERM UMR 894, Paris, France,UPMC, Université Paris 6, UMR S677, Paris, France
| | - L Zaidan
- Centre de Psychiatrie et Neurosciences, INSERM UMR 894, Paris, France,UPMC, Université Paris 6, UMR S677, Paris, France
| | - S Marday
- Centre de Psychiatrie et Neurosciences, INSERM UMR 894, Paris, France,UPMC, Université Paris 6, UMR S677, Paris, France
| | | | | | - R Mongeau
- Centre de Psychiatrie et Neurosciences, INSERM UMR 894, Paris, France,Université Paris Descartes Paris 5, Paris, France
| | - L Lanfumey
- Centre de Psychiatrie et Neurosciences, INSERM UMR 894, Paris, France,UPMC, Université Paris 6, UMR S677, Paris, France,Faculté de Médecine Pierre et Marie Curie, Site Pitié-Salpêtrière, 91, Boulevard de l'Hôpital, INSERM UMR 894, 75634 Paris, France. E-mail:
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O'Leary OF, Cryan JF. A ventral view on antidepressant action: roles for adult hippocampal neurogenesis along the dorsoventral axis. Trends Pharmacol Sci 2014; 35:675-87. [PMID: 25455365 DOI: 10.1016/j.tips.2014.09.011] [Citation(s) in RCA: 138] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2014] [Revised: 09/29/2014] [Accepted: 09/30/2014] [Indexed: 11/26/2022]
Abstract
Adult hippocampal neurogenesis is implicated in antidepressant action, stress responses, and cognitive functioning. The hippocampus is functionally segregated along its longitudinal axis into dorsal (dHi) and ventral (vHi) regions in rodents, and analogous posterior and anterior regions in primates, whereby the vHi preferentially regulates stress and anxiety, while the dHi preferentially regulates spatial learning and memory. Given the role of neurogenesis in functions preferentially regulated by the dHi or vHi, it is plausible that neurogenesis is preferentially regulated in either the dHi or vHi depending upon the stimulus. We appraise here the literature on the effects of stress and antidepressants on neurogenesis along the hippocampal longitudinal axis and explore whether preferential regulation of neurogenesis in the vHi/anterior hippocampus contributes to stress resilience and antidepressant action.
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Affiliation(s)
- Olivia F O'Leary
- Department of Anatomy and Neuroscience, University College Cork, Cork, Ireland; Alimentary Pharmabiotic Centre, University College Cork, Cork, Ireland.
| | - John F Cryan
- Department of Anatomy and Neuroscience, University College Cork, Cork, Ireland; Alimentary Pharmabiotic Centre, University College Cork, Cork, Ireland
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Musazzi L, Seguini M, Mallei A, Treccani G, Pelizzari M, Tornese P, Racagni G, Tardito D. Time-dependent activation of MAPK/Erk1/2 and Akt/GSK3 cascades: modulation by agomelatine. BMC Neurosci 2014; 15:119. [PMID: 25332063 PMCID: PMC4207903 DOI: 10.1186/s12868-014-0119-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2014] [Accepted: 10/09/2014] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND The novel antidepressant agomelatine, a melatonergic MT1/MT2 agonist combined with 5-HT2c serotonin antagonist properties, showed antidepressant action in preclinical and clinical studies. There is a general agreement that the therapeutic action of antidepressants needs the activation of slow-onset adaptations in downstream signalling pathways finally regulating neuroplasticity. In the last several years, particular attention was given to cAMP-responsive element binding protein (CREB)-related pathways, since it was shown that chronic antidepressants increase CREB phosphorylation and transcriptional activity, through the activation of calcium/calmodulin-dependent (CaM) and mitogen activated protein kinase cascades (MAPK/Erk1/2). Aim of this work was to analyse possible effects of chronic agomelatine on time-dependent changes of different intracellular signalling pathways in hippocampus and prefrontal/frontal cortex of male rats. To this end, measurements were performed 1 h or 16 h after the last agomelatine or vehicle injection. RESULTS We have found that in naïve rats chronic agomelatine, contrary to traditional antidepressants, did not increase CREB phosphorylation, but modulates the time-dependent regulation of MAPK/Erk1/2 and Akt/glycogen synthase kinase-3 (GSK-3) pathways. CONCLUSION Our results suggest that the intracellular molecular mechanisms modulated by chronic agomelatine may be partly different from those of traditional antidepressants and involve the time-dependent regulation of MAPK/Erk1/2 and Akt/GSK-3 signalling pathways. This could exert a role in the antidepressant efficacy of the drug.
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Affiliation(s)
- Laura Musazzi
- Laboratory of Neuropsychopharmacology and Functional Neurogenomics, Dipartimento di Scienze Farmacologiche e Biomolecolari and Center of Excellence on Neurodegenerative Diseases (CEND), Università degli Studi di Milano, Via Balzaretti 9, Milano, 20133, Italy.
| | - Mara Seguini
- Laboratory of Neuropsychopharmacology and Functional Neurogenomics, Dipartimento di Scienze Farmacologiche e Biomolecolari and Center of Excellence on Neurodegenerative Diseases (CEND), Università degli Studi di Milano, Via Balzaretti 9, Milano, 20133, Italy.
| | - Alessandra Mallei
- Laboratory of Neuropsychopharmacology and Functional Neurogenomics, Dipartimento di Scienze Farmacologiche e Biomolecolari and Center of Excellence on Neurodegenerative Diseases (CEND), Università degli Studi di Milano, Via Balzaretti 9, Milano, 20133, Italy.
| | - Giulia Treccani
- Laboratory of Neuropsychopharmacology and Functional Neurogenomics, Dipartimento di Scienze Farmacologiche e Biomolecolari and Center of Excellence on Neurodegenerative Diseases (CEND), Università degli Studi di Milano, Via Balzaretti 9, Milano, 20133, Italy.
| | - Mariagrazia Pelizzari
- Laboratory of Neuropsychopharmacology and Functional Neurogenomics, Dipartimento di Scienze Farmacologiche e Biomolecolari and Center of Excellence on Neurodegenerative Diseases (CEND), Università degli Studi di Milano, Via Balzaretti 9, Milano, 20133, Italy.
| | - Paolo Tornese
- Laboratory of Neuropsychopharmacology and Functional Neurogenomics, Dipartimento di Scienze Farmacologiche e Biomolecolari and Center of Excellence on Neurodegenerative Diseases (CEND), Università degli Studi di Milano, Via Balzaretti 9, Milano, 20133, Italy.
| | - Giorgio Racagni
- Laboratory of Neuropsychopharmacology and Functional Neurogenomics, Dipartimento di Scienze Farmacologiche e Biomolecolari and Center of Excellence on Neurodegenerative Diseases (CEND), Università degli Studi di Milano, Via Balzaretti 9, Milano, 20133, Italy. .,Istituto di Ricovero e Cura a Carattere Scientifico Centro S. Giovanni di Dio-Fatebenefratelli, Brescia, Italy.
| | - Daniela Tardito
- Laboratory of Neuropsychopharmacology and Functional Neurogenomics, Dipartimento di Scienze Farmacologiche e Biomolecolari and Center of Excellence on Neurodegenerative Diseases (CEND), Università degli Studi di Milano, Via Balzaretti 9, Milano, 20133, Italy.
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Abstract
Increasing number of studies has during the last decade linked neurotrophic factors with the pathophysiology of neuropsychiatric disorders and with the mechanisms of action of drugs used for the treatment of these disorders. In particular, brain-derived neurotrophic factor BDNF and its receptor TrkB have been connected with the pathophysiology in mood disorders, and there is strong evidence that BDNF signaling is critically involved in the recovery from depression with both pharmacological and psychological means. Neurotrophins play a central role in neuronal plasticity and network connectivity in developing adult brain, and recent evidence links plasticity and network rewiring with mood disorders and their treatment. Therefore, neurotrophins should not be seen as happiness factors but as critical tools in the process where brain networks are optimally tuned to environment, and it is against this background that the effects of neurotrophins on neuropsychiatric disorders should be looked at.
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Affiliation(s)
- E Castrén
- Neuroscience Center, University of Helsinki, 56, 00014, Helsinki, Finland,
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Guardiola-Lemaitre B, De Bodinat C, Delagrange P, Millan MJ, Munoz C, Mocaër E. Agomelatine: mechanism of action and pharmacological profile in relation to antidepressant properties. Br J Pharmacol 2014; 171:3604-19. [PMID: 24724693 PMCID: PMC4128060 DOI: 10.1111/bph.12720] [Citation(s) in RCA: 110] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2013] [Revised: 03/26/2014] [Accepted: 04/03/2014] [Indexed: 12/12/2022] Open
Abstract
Agomelatine behaves both as a potent agonist at melatonin MT1 and MT2 receptors and as a neutral antagonist at 5-HT2C receptors. Accumulating evidence in a broad range of experimental procedures supports the notion that the psychotropic effects of agomelatine are due to the synergy between its melatonergic and 5-hydroxytryptaminergic effects. The recent demonstration of the existence of heteromeric complexes of MT1 and MT2 with 5-HT2C receptors at the cellular level may explain how these two properties of agomelatine translate into a synergistic action that, for example, leads to increases in hippocampal proliferation, maturation and survival through modulation of multiple cellular pathways (increase in trophic factors, synaptic remodelling, glutamate signalling) and key targets (early genes, kinases). The present review focuses on the pharmacological properties of this novel antidepressant. Its mechanism of action, strikingly different from that of conventional classes of antidepressants, opens perspectives towards a better understanding of the physiopathological bases underlying depression.
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Leger M, Paizanis E, Dzahini K, Quiedeville A, Bouet V, Cassel JC, Freret T, Schumann-Bard P, Boulouard M. Environmental Enrichment Duration Differentially Affects Behavior and Neuroplasticity in Adult Mice. Cereb Cortex 2014; 25:4048-61. [DOI: 10.1093/cercor/bhu119] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
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41
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Klomp A, Václavů L, Meerhoff GF, Reneman L, Lucassen PJ. Effects of chronic fluoxetine treatment on neurogenesis and tryptophan hydroxylase expression in adolescent and adult rats. PLoS One 2014; 9:e97603. [PMID: 24827731 PMCID: PMC4020860 DOI: 10.1371/journal.pone.0097603] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2013] [Accepted: 04/22/2014] [Indexed: 11/18/2022] Open
Abstract
The antidepressant drug fluoxetine (Prozac) has been increasingly prescribed to children and adolescents with depressive disorders despite a lack of thorough understanding of its therapeutic effects in the paediatric population and of its putative neurodevelopmental effects. Within the framework of PRIOMEDCHILD ERA-NET, we investigated; a) effects of chronic fluoxetine treatment on adult hippocampal neurogenesis, a structural readout relevant for antidepressant action and hippocampal development; b) effects on tryptophan hydroxylase (TPH) expression, a measure of serotonin synthesis; c) whether treatment effects during adolescence differed from treatment at an adult age, and d) whether they were subregion-specific. Stereological quantification of the number of proliferating (Ki-67+) cells and of the number of young migratory neurons (doublecortin+), revealed a significant age-by-treatment interaction effect, indicating that fluoxetine affects both proliferation and neurogenesis in adolescent-treated rats differently than it does in adult-treated rats. In terms of subregional differences, fluoxetine enhanced proliferation mainly in the dorsal parts of the hippocampus, and neurogenesis in both the suprapyramidal and infrapyramidal blades of the dentate gyrus in adolescent-treated rats, while no such differences were seen in adult-treated rats. Fluoxetine exerted similar age-by-treatment interaction effects on TPH cells mainly in the ventral portion of the dorsal raphe nucleus. We conclude that fluoxetine exerts divergent effects on structural plasticity and serotonin synthesis in adolescent versus adult-treated rats. These preliminary data indicate a differential sensitivity of the adolescent brain to this drug and thus warrant further research into their behavioural and translational aspects. Together with recent related findings, they further call for caution in prescribing these drugs to the adolescent population.
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Affiliation(s)
- Anne Klomp
- Department of Radiology, Academic Medical Centre, University of Amsterdam, Amsterdam, The Netherlands
| | - Lena Václavů
- Swammerdam Institute of Life Sciences, Centre for Neuroscience, University of Amsterdam, Amsterdam, The Netherlands
| | - Gideon F. Meerhoff
- Swammerdam Institute of Life Sciences, Centre for Neuroscience, University of Amsterdam, Amsterdam, The Netherlands
| | - Liesbeth Reneman
- Department of Radiology, Academic Medical Centre, University of Amsterdam, Amsterdam, The Netherlands
| | - Paul J. Lucassen
- Swammerdam Institute of Life Sciences, Centre for Neuroscience, University of Amsterdam, Amsterdam, The Netherlands
- * E-mail:
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42
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Schaeffer EL, Cerulli FG, Souza HOX, Catanozi S, Gattaz WF. Synergistic and additive effects of enriched environment and lithium on the generation of new cells in adult mouse hippocampus. J Neural Transm (Vienna) 2014; 121:695-706. [DOI: 10.1007/s00702-014-1175-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2013] [Accepted: 02/04/2014] [Indexed: 12/24/2022]
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43
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Lin YL, Wang S. Prenatal lipopolysaccharide exposure increases depression-like behaviors and reduces hippocampal neurogenesis in adult rats. Behav Brain Res 2014; 259:24-34. [DOI: 10.1016/j.bbr.2013.10.034] [Citation(s) in RCA: 85] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2013] [Revised: 10/18/2013] [Accepted: 10/20/2013] [Indexed: 12/11/2022]
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Ge JF, Gao WC, Cheng WM, Lu WL, Tang J, Peng L, Li N, Chen FH. Orcinol glucoside produces antidepressant effects by blocking the behavioural and neuronal deficits caused by chronic stress. Eur Neuropsychopharmacol 2014; 24:172-80. [PMID: 23838013 DOI: 10.1016/j.euroneuro.2013.05.007] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2013] [Revised: 05/18/2013] [Accepted: 05/24/2013] [Indexed: 12/31/2022]
Abstract
This study focused on the antidepressant potential of orcinol glucoside (OG) and its possible mechanisms of action. We established a depressed rat model using 3 consecutive weeks of chronic unpredictable mild stress (CUMS). The antidepressant-like effect of OG was revealed using the sucrose preference test, the open field test, the forced swimming test (FST), and the tail suspension test (TST). The activity of the hypothalamic-pituitary-adrenal (HPA) axis was evaluated by detecting the serum corticosterone (CORT) concentrations and mRNA expression of corticotrophin-releasing hormone (CRH) in the hypothalamus. The protein expression levels of brain-derived neurotrophic factor (BDNF) and total phosphorylated-ERK1/2 were detected by western blot. The results showed that OG treatment (1.5, 3, or 6mg/kg) alleviated the depression-like behaviour of rats under CUMS, as indicated by the increased sucrose preference and the decreased immobility in both the FST and TST, although the rearing frequency in the open field test increased only in the group that received the lowest dose (1.5mg/kg OG). Rats that received OG treatment exhibited reduced serum CORT levels and CRH mRNA expression in the hypothalamus, suggesting that the hyperactivity of the HPA axis in CUMS rats was reversed by OG treatment. Moreover, OG treatment upregulated the protein levels of BDNF and phosphorylated-ERK1/2 in the hippocampus, even above control levels. Our findings suggest that OG improved depressive behaviour in CUMS rats by downregulating HPA axis hyperactivity and increasing BDNF expression and ERK1/2 phosphorylation in the hippocampus.
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Affiliation(s)
- Jin-Fang Ge
- Anhui Key Laboratory of Bioactivity of Natural Products, School of Pharmacy, Anhui Medical University, 81 Meishan Road, Hefei 230032, PR China
| | - Wen-Chao Gao
- Anhui Key Laboratory of Bioactivity of Natural Products, School of Pharmacy, Anhui Medical University, 81 Meishan Road, Hefei 230032, PR China
| | - Wen-Ming Cheng
- Anhui Key Laboratory of Bioactivity of Natural Products, School of Pharmacy, Anhui Medical University, 81 Meishan Road, Hefei 230032, PR China
| | - Wei-Li Lu
- Anhui Key Laboratory of Bioactivity of Natural Products, School of Pharmacy, Anhui Medical University, 81 Meishan Road, Hefei 230032, PR China
| | - Jie Tang
- Anhui Key Laboratory of Bioactivity of Natural Products, School of Pharmacy, Anhui Medical University, 81 Meishan Road, Hefei 230032, PR China
| | - Lei Peng
- Anhui Key Laboratory of Bioactivity of Natural Products, School of Pharmacy, Anhui Medical University, 81 Meishan Road, Hefei 230032, PR China
| | - Ning Li
- Anhui Key Laboratory of Bioactivity of Natural Products, School of Pharmacy, Anhui Medical University, 81 Meishan Road, Hefei 230032, PR China.
| | - Fei-Hu Chen
- Anhui Key Laboratory of Bioactivity of Natural Products, School of Pharmacy, Anhui Medical University, 81 Meishan Road, Hefei 230032, PR China.
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45
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Mahar I, Bambico FR, Mechawar N, Nobrega JN. Stress, serotonin, and hippocampal neurogenesis in relation to depression and antidepressant effects. Neurosci Biobehav Rev 2013; 38:173-92. [PMID: 24300695 DOI: 10.1016/j.neubiorev.2013.11.009] [Citation(s) in RCA: 410] [Impact Index Per Article: 37.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2013] [Revised: 11/19/2013] [Accepted: 11/25/2013] [Indexed: 01/19/2023]
Abstract
Chronic stressful life events are risk factors for developing major depression, the pathophysiology of which is strongly linked to impairments in serotonin (5-HT) neurotransmission. Exposure to chronic unpredictable stress (CUS) has been found to induce depressive-like behaviours, including passive behavioural coping and anhedonia in animal models, along with many other affective, cognitive, and behavioural symptoms. The heterogeneity of these symptoms represents the plurality of corticolimbic structures involved in mood regulation that are adversely affected in the disorder. Chronic stress has also been shown to negatively regulate adult hippocampal neurogenesis, a phenomenon that is involved in antidepressant effects and regulates subsequent stress responses. Although there exists an enormous body of data on stress-induced alterations of 5-HT activity, there has not been extensive exploration of 5-HT adaptations occurring presynaptically or at the level of the raphe nuclei after exposure to CUS. Similarly, although hippocampal neurogenesis is known to be negatively regulated by stress and positively regulated by antidepressant treatment, the role of neurogenesis in mediating affective behaviour in the context of stress remains an active area of investigation. The goal of this review is to link the serotonergic and neurogenic hypotheses of depression and antidepressant effects in the context of stress. Specifically, chronic stress significantly attenuates 5-HT neurotransmission and 5-HT1A autoreceptor sensitivity, and this effect could represent an endophenotypic hallmark for mood disorders. In addition, by decreasing neurogenesis, CUS decreases hippocampal inhibition of the hypothalamic-pituitary-adrenal (HPA) axis, exacerbating stress axis overactivity. Similarly, we discuss the possibility that adult hippocampal neurogenesis mediates antidepressant effects via the ventral (in rodents; anterior in humans) hippocampus' influence on the HPA axis, and mechanisms by which antidepressants may reverse chronic stress-induced 5-HT and neurogenic changes. Although data are as yet equivocal, antidepressant modulation of 5-HT neurotransmission may well serve as one of the factors that could drive neurogenesis-dependent antidepressant effects through these stress regulation-related mechanisms.
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Affiliation(s)
- Ian Mahar
- McGill Group for Suicide Studies, Douglas Mental Health University Institute, Verdun, QC, Canada; Integrated Program in Neuroscience, McGill University, Montreal, QC, Canada.
| | | | - Naguib Mechawar
- McGill Group for Suicide Studies, Douglas Mental Health University Institute, Verdun, QC, Canada; Integrated Program in Neuroscience, McGill University, Montreal, QC, Canada; Department of Psychiatry, McGill University, Montreal, QC, Canada
| | - José N Nobrega
- Behavioural Neurobiology Laboratory, Centre for Addiction and Mental Health, Toronto, ON, Canada; Department of Pharmacology and Toxicology, University of Toronto, Toronto, ON, Canada; Department of Psychiatry, University of Toronto, Toronto, ON, Canada; Department of Psychology, University of Toronto, Toronto, ON, Canada
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46
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Zhang R, Peng Z, Wang H, Xue F, Chen Y, Wang Y, Wang H, Tan Q. Gastrodin ameliorates depressive-like behaviors and up-regulates the expression of BDNF in the hippocampus and hippocampal-derived astrocyte of rats. Neurochem Res 2013; 39:172-9. [PMID: 24293261 DOI: 10.1007/s11064-013-1203-0] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2013] [Revised: 10/30/2013] [Accepted: 11/18/2013] [Indexed: 01/08/2023]
Abstract
Gastrodin (GAS), a main constituent of a Chinese herbal medicine Tian ma, has been shown to be effective in treating various mood disorders. The purpose of the present study was to assess the effects of GAS on alleviating depressive-like behaviors in a rat model of chronic unpredictable stress (CUS) and regulating the expression of BDNF in the hippocampus and hippocampal-derived astrocyte from Sprague-Dawley (SD) rats. Following CUS, rats were intraperitoneally administered gastrodin (50, 100, or 200 mg/kg daily) or vehicle for 2 weeks. Rats were then experienced sucrose preference test and forced swim test. The expressions of GFAP and BDNF in the hippocampus were evaluated. In addition, hippocampal astrocytes were isolated from neonatal SD rats and exposed to different concentrations of GAS (sham, 5, 10, 20, 50 and 100 μg/mL) for 48 and 72 h before the cell viability and the levels of pERK1/2 and BDNF were analyzed. Furthermore, the cell viability was also tested after exposure to serum-free condition that contain different concentrations of GAS for 48 and 72 h. GAS administration (100 and 200 mg/kg daily) reversed depressive-like behaviors in rats exposed to CUS paradigm and restored the expression of GFAP and BDNF in the hippocampus. Moreover, in vitro experiments revealed that GAS did not increase the cell viability of astrocytes but protected it from 72 h's serum-free damage at the dosage 20 μg/mL. Increased levels of ERK1/2 phosphorylation and BDNF protein were also observed after GAS (20 μg/mL) treatment for 72 h. These results indicate that gastrodin possesses antidepressant effect. The changes of the astrocyte activation and the level of BDNF may play a critical role in the pharmacological action of GAS.
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Affiliation(s)
- Ruiguo Zhang
- Department of Psychosomatic Medicine, Xijing Hospital, Fourth Military Medical University, 127 Changle Road, Xi'an, 710032, Shaanxi, China
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47
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Neurogenesis along the septo-temporal axis of the hippocampus: Are depression and the action of antidepressants region-specific? Neuroscience 2013; 252:234-52. [DOI: 10.1016/j.neuroscience.2013.08.017] [Citation(s) in RCA: 166] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2013] [Revised: 07/01/2013] [Accepted: 08/12/2013] [Indexed: 01/25/2023]
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48
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Jin X, Liu P, Yang F, Zhang YH, Miao D. Rosmarinic acid ameliorates depressive-like behaviors in a rat model of CUS and Up-regulates BDNF levels in the hippocampus and hippocampal-derived astrocytes. Neurochem Res 2013; 38:1828-37. [PMID: 23756732 DOI: 10.1007/s11064-013-1088-y] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2013] [Revised: 05/22/2013] [Accepted: 05/25/2013] [Indexed: 12/11/2022]
Abstract
Rosmarinic acid (RA), a primary constituent of a Chinese herbal medicine, has been shown to have some therapeutic effects in an animal model of depression, but its underlying mechanisms are poorly understood. Sprague-Dawley rats were exposed to chronic unpredictable stress (CUS) for 21 days, and received RA for 14 days from the last week of CUS, then the behavioral changes, hippocampal pERK1/2 and BDNF levels were observed. Rats were further treated with U0126 (an ERK1/2 phosphorylation inhibitor) 30 min before RA treatment to assess the effects of RA and ERK1/2 signaling in depressive-like behavior and hippocampal BDNF levels. In addition, brains of newly born Sprague-Dawley rats were used to harvest and expand hippocampal astrocytes. Cells were exposed to different concentrations of RA (sham, 1, 5, 10, 20, and 40 μg/mL) or U0126 (2 μM as a final concentration) + RA (sham, 1, 5, 10, 20, and 40 μg/mL) for 48 h, and the pERK1/2 and BDNF levels were assessed by western and ELISA assays. RA administration (10 mg/kg daily) reversed depressive-like behaviors in rats exposed to a chronic unpredictable stress paradigm and restored pERK1/2 protein expression and hippocampal brain-derived neurotrophic factor (BDNF). Moreover, in vitro experiments revealed that 20 μg/mL RA increased pERK1/2 and BDNF levels in cultured astrocytes. Interestingly, the effects of RA were inhibited by U0126. RA might be a useful treatment for depression and the changes in ERK1/2 signaling and BDNF levels may play a critical role in the pharmacological action of RA.
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Affiliation(s)
- Xiang Jin
- Department of Psychology, School of Aerospace Medicine, Fourth Military Medical University, Xi'an, 710032, China
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49
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Pompili M, Serafini G, Innamorati M, Venturini P, Fusar-Poli P, Sher L, Amore M, Girardi P. Agomelatine, a novel intriguing antidepressant option enhancing neuroplasticity: a critical review. World J Biol Psychiatry 2013; 14:412-31. [PMID: 23530731 DOI: 10.3109/15622975.2013.765593] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
OBJECTIVES The treatment of major affective disorders, commonly associated with high disability and elevated social costs may be still considered unsatisfactory. Among all antidepressant drugs, predominantly acting through monoaminergic mechanisms, agomelatine is of particular interest due to another alternative mechanism of action. Targeting melatonergic receptors, agomelatine play a crucial role in synchronizing circadian rhythms, known to be altered in depressed subjects. METHODS A critical review of the literature focusing on efficacy, safety and tolerability of agomelatine in major affective disorders was performed. Additionally, we focused on the potential of agomelatine in enhancing neuroplasticity mechanisms and promote neurogenesis. A total of 136 articles from peer-reviewed journals were identified, of which 50 were assessed for eligibility and 21 were included. RESULTS Agomelatine, a melatonergic analogue drug acting as MT1/MT2 agonist and 5-HT2C antagonist, has been reported to be effective as antidepressant drug. Studies confirmed not only clinical efficacy but also safety and tolerability of agomelatine. Also, it enhances neuroplasticity mechanisms and adult neurogenesis in brain areas such as hippocampus and prefrontal cortex. CONCLUSIONS Agomelatine actually represents an intriguing option in the treatment of affective disorders.
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Affiliation(s)
- Maurizio Pompili
- Department of Neurosciences, Mental Health and Sensory Organs, Sant'Andrea Hospital, Sapienza University of Rome, Rome, Italy.
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50
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Lee H, Ohno M, Ohta S, Mikami T. Regular moderate or intense exercise prevents depression-like behavior without change of hippocampal tryptophan content in chronically tryptophan-deficient and stressed mice. PLoS One 2013; 8:e66996. [PMID: 23861751 PMCID: PMC3701529 DOI: 10.1371/journal.pone.0066996] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2012] [Accepted: 05/14/2013] [Indexed: 12/20/2022] Open
Abstract
Regular exercise has an antidepressant effect in human subjects. Studies using animals have suggested that the antidepressant effect of exercise is attributable to an increase of brain 5-hydroxytryptamine (5-HT); however, the precise mechanism underlying the antidepressant action via exercise is unclear. In contrast, the effect of 5-HT on antidepressant activity has not been clarified, in part because the therapeutic response to antidepressant drugs has a time lag in spite of the rapid increase of brain 5-HT upon administration of these drugs. This study was designed to investigate the contribution of brain 5-HT to the antidepressant effect of exercise. Mice were fed a tryptophan-deficient diet and stressed using chronic unpredictable stress (CUS) for 4 weeks with or without the performance of either moderate or intense exercise on a treadmill 3 days per week. The findings demonstrated that the onset of depression-like behavior is attributable not to chronic reduction of 5-HT but to chronic stress. Regular exercise, whether moderate or intense, prevents depression-like behavior with an improvement of adult hippocampal cell proliferation and survival and without the recovery of 5-HT. Concomitantly, the mice that exercised showed increased hippocampal noradrenaline. Regular exercise prevents the impairment of not long-term memory but short-term memory in a 5-HT-reduced state. Together, these findings suggest that: (1) chronic reduction of brain 5-HT may not contribute to the onset of depression-like behavior; (2) regular exercise, whether moderate or intense, prevents the onset of chronic stress-induced depression-like behavior independent of brain 5-HT and dependent on brain adrenaline; and (3) regular exercise prevents chronic tryptophan reduction-induced impairment of not long-term but short-term memory.
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Affiliation(s)
- Hosung Lee
- Department of Biochemistry and Cell Biology, Institute of Gerontology, Nippon Medical School, Nakahara-ku, Kawasaki, Japan
| | - Makoto Ohno
- Graduate School of Health and Sport Science, Nippon Sport Science University, Setagaya-ku, Tokyo, Japan
| | - Shigeo Ohta
- Department of Biochemistry and Cell Biology, Institute of Gerontology, Nippon Medical School, Nakahara-ku, Kawasaki, Japan
| | - Toshio Mikami
- Department of Health and Sports Science, Nippon Medical School, Nakahara-ku, Kawasaki, Kanagawa, Japan
- * E-mail:
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