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Mori M, Shizunaga H, Harada H, Tajiri Y, Murata Y, Terada K, Ohe K, Enjoji M. Oxytocin treatment improves dexamethasone‐induced depression‐like symptoms associated with enhancement of hippocampal
CREB‐BDNF
signaling in female mice. Neuropsychopharmacol Rep 2022; 42:356-361. [PMID: 35730145 PMCID: PMC9515699 DOI: 10.1002/npr2.12271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2021] [Revised: 04/18/2022] [Accepted: 05/14/2022] [Indexed: 11/30/2022] Open
Abstract
Aims Chronic stress and glucocorticoid exposure are risk factors for depression. Oxytocin (OT) has been shown to have antistress and antidepressant‐like effects in male rodents. However, depression is twice as common in women than in men, and it remains unclear whether OT exerts antidepressant‐like effects in women with depression. Therefore, in this study, we investigated the therapeutic effect of chronic OT administration in a female mouse model of dexamethasone (DEX)‐induced depression. Methods Female C57BL/6J mice were administered saline (vehicle, s.c.), DEX (s.c.), or OT (i.p.) + DEX (s.c.) daily for 8 weeks, and then assessed for anxiety‐ and depression‐like behaviors. We also examined the hippocampal levels of phosphorylated cAMP response element‐binding protein (p‐CREB) and brain‐derived neurotrophic factor (BDNF), which are important mediators of the response to antidepressants. Results Simultaneous OT treatment blocked the adverse effects of DEX on emotional behaviors. Furthermore, it upregulated p‐CREB and BDNF in the hippocampus. Conclusion OT may exert antidepressant‐like effects by activating hippocampal CREB‐BDNF signaling in a female mouse model of depression.
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Affiliation(s)
- Masayoshi Mori
- Department of Pharmacotherapeutics, Faculty of Pharmaceutical SciencesFukuoka UniversityFukuokaJapan
| | - Hiromi Shizunaga
- Department of Pharmacotherapeutics, Faculty of Pharmaceutical SciencesFukuoka UniversityFukuokaJapan
| | - Hiroyoshi Harada
- Department of Pharmacotherapeutics, Faculty of Pharmaceutical SciencesFukuoka UniversityFukuokaJapan
| | - Yuki Tajiri
- Department of Pharmacotherapeutics, Faculty of Pharmaceutical SciencesFukuoka UniversityFukuokaJapan
| | - Yusuke Murata
- Department of Pharmacotherapeutics, Faculty of Pharmaceutical SciencesFukuoka UniversityFukuokaJapan
| | - Kazuki Terada
- Division of Pharmacotherapeutics, Faculty of Pharmaceutical SciencesHimeji Dokkyo UniversityHimejiJapan
| | - Kenji Ohe
- Department of Pharmacotherapeutics, Faculty of Pharmaceutical SciencesFukuoka UniversityFukuokaJapan
| | - Munechika Enjoji
- Department of Pharmacotherapeutics, Faculty of Pharmaceutical SciencesFukuoka UniversityFukuokaJapan
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Sałaciak K, Pytka K. Revisiting the sigma-1 receptor as a biological target to treat affective and cognitive disorders. Neurosci Biobehav Rev 2022; 132:1114-1136. [PMID: 34736882 PMCID: PMC8559442 DOI: 10.1016/j.neubiorev.2021.10.037] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 10/25/2021] [Accepted: 10/28/2021] [Indexed: 12/21/2022]
Abstract
Depression and cognitive disorders are diseases with complex and not-fully understood etiology. Unfortunately, the COVID-19 pandemic dramatically increased the prevalence of both conditions. Since the current treatments are inadequate in many patients, there is a constant need for discovering new compounds, which will be more effective in ameliorating depressive symptoms and treating cognitive decline. Proteins attracting much attention as potential targets for drugs treating these conditions are sigma-1 receptors. Sigma-1 receptors are multi-functional proteins localized in endoplasmic reticulum membranes, which play a crucial role in cellular signal transduction by interacting with receptors, ion channels, lipids, and kinases. Changes in their functions and expression may lead to various diseases, including depression or memory impairments. Thus, sigma-1 receptor modulation might be useful in treating these central nervous system diseases. Importantly, two sigma-1 receptor ligands entered clinical trials, showing that this compound group possesses therapeutic potential. Therefore, based on preclinical studies, this review discusses whether the sigma-1 receptor could be a promising target for drugs treating affective and cognitive disorders.
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Affiliation(s)
- Kinga Sałaciak
- Department of Pharmacodynamics, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, 30-688 Krakow, Poland
| | - Karolina Pytka
- Department of Pharmacodynamics, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, 30-688 Krakow, Poland.
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Araki T, Ikegaya Y, Koyama R. The effects of microglia‐ and astrocyte‐derived factors on neurogenesis in health and disease. Eur J Neurosci 2020; 54:5880-5901. [PMID: 32920880 PMCID: PMC8451940 DOI: 10.1111/ejn.14969] [Citation(s) in RCA: 82] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 09/01/2020] [Accepted: 09/02/2020] [Indexed: 12/20/2022]
Abstract
Hippocampal neurogenesis continues throughout life and has been suggested to play an essential role in maintaining spatial cognitive function under physiological conditions. An increasing amount of evidence has indicated that adult neurogenesis is tightly controlled by environmental conditions in the neurogenic niche, which consists of multiple types of cells including microglia and astrocytes. Microglia maintain the environment of neurogenic niche through their phagocytic capacity and interaction with neurons via fractalkine‐CX3CR1 signaling. In addition, microglia release growth factors such as brain‐derived neurotrophic factor (BDNF) and cytokines such as tumor necrosis factor (TNF)‐α to support the development of adult born neurons. Astrocytes also manipulate neurogenesis by releasing various soluble factors including adenosine triphosphate and lactate. Whereas, under pathological conditions such as Alzheimer's disease, depression, and epilepsy, microglia and astrocytes play a leading role in inflammation and are involved in attenuating the normal process of neurogenesis. The modulation of glial functions on neurogenesis in these brain diseases are attracting attention as a new therapeutic target. This review describes how these glial cells play a role in adult hippocampal neurogenesis in both health and disease, especially focusing glia‐derived factors.
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Affiliation(s)
- Tasuku Araki
- Laboratory of Chemical Pharmacology Graduate School of Pharmaceutical Sciences The University of Tokyo Tokyo Japan
| | - Yuji Ikegaya
- Laboratory of Chemical Pharmacology Graduate School of Pharmaceutical Sciences The University of Tokyo Tokyo Japan
- Center for Information and Neural Networks Suita City Osaka Japan
| | - Ryuta Koyama
- Laboratory of Chemical Pharmacology Graduate School of Pharmaceutical Sciences The University of Tokyo Tokyo Japan
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Xu D, Wang C, Zhu X, Zhao W, Jiang B, Cui S, Sun Y, Cui Z. The antidepressant-like effects of fluvoxamine in mice involve the mTOR signaling in the hippocampus and prefrontal cortex. Psychiatry Res 2020; 285:112708. [PMID: 31810748 DOI: 10.1016/j.psychres.2019.112708] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 11/24/2019] [Accepted: 11/24/2019] [Indexed: 12/31/2022]
Abstract
Recent studies have suggested that activation of the mammalian target of rapamycin (mTOR) signaling may be related to antidepressant actions. Although thought as a selective serotonin reuptake inhibitor (SSRI), the antidepressant mechanisms of fluvoxamine remain elusive. Therefore, this study aims to evaluate whether mTOR underlies the antidepressant-like effects of fluvoxamine. Male C57BL/6 J mice were subjected to 8 weeks of chronic unpredictable mild stress (CUMS) with fluvoxamine administered during the last 2 weeks. Western blotting analyses were then used to assess the expression of the mTOR signaling cascade in the hippocampus and prefrontal cortex (PFC) among all groups. The selective inhibitor of mTOR, rapamycin, was further used. It was found that fluvoxamine treatment fully reversed the effects of CUMS on the mTOR signaling in the hippocampus and PFC, and the usage of rapamycin significantly prevented the antidepressant-like effects of fluvoxamine in the CUMS model of depression. Taken together, the mTOR system is involved in the antidepressant mechanisms of fluvoxamine.
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Affiliation(s)
- Dawei Xu
- Department of Orthopaedics, Affiliated Hospital 2 of Nantong University, Nantong 226001, People's Republic of China
| | - Chengniu Wang
- Department of Orthopaedics, Affiliated Hospital 2 of Nantong University, Nantong 226001, People's Republic of China; Institute of Reproductive Medicine, Medical College, Nantong University, Nantong 226001, People's Republic of China
| | - Xinhui Zhu
- Department of Orthopaedics, Affiliated Hospital 2 of Nantong University, Nantong 226001, People's Republic of China
| | - Wei Zhao
- Department of Orthopaedics, Affiliated Hospital 2 of Nantong University, Nantong 226001, People's Republic of China
| | - Bo Jiang
- Department of Pharmacology, School of Pharmacy, Nantong University, Nantong 226001, People's Republic of China
| | - Shengyu Cui
- Department of Orthopaedics, Affiliated Hospital 2 of Nantong University, Nantong 226001, People's Republic of China
| | - Yuyu Sun
- Department of Orthopaedics, Affiliated Hospital 2 of Nantong University, Nantong 226001, People's Republic of China.
| | - Zhiming Cui
- Department of Orthopaedics, Affiliated Hospital 2 of Nantong University, Nantong 226001, People's Republic of China.
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Mao J, Hu Y, Ruan L, Ji Y, Lou Z. Role of endoplasmic reticulum stress in depression (Review). Mol Med Rep 2019; 20:4774-4780. [PMID: 31702816 PMCID: PMC6854536 DOI: 10.3892/mmr.2019.10789] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Accepted: 10/10/2019] [Indexed: 12/12/2022] Open
Abstract
Depression is a devastating mood disorder that causes profound disability worldwide. Despite the increasing number of antidepressant medications available, the treatment options for depression are limited. Therefore, understanding the etiology and pathophysiology of depression, and exploiting potential novel agents to treat and prevent this disorder are imperative. Endoplasmic reticulum (ER) stress activates the unfolded protein response and mediates the pathogenesis of psychiatric diseases, including depression. Emerging evidence in human and animal models suggests an intriguing link between ER stress and depression. The ER serves as an important subcellular organelle for the synthesis, folding, modification, and transport of proteins, a process that is highly developed in neuronal cells. Perturbations of ER homeostasis lead to ER stress, and ER stress helps to restore the normal ER function by restoring the protein-folding capacity of the ER. This biological defense mechanism is imperative to prevent the disease. However, excessive or persistent ER stress eventually causes cell death. If the damage occurs in the hippocampus, the amygdala and striatum and other areas of the neurons will be involved in the development of depression. In this review article, we explore how ER stress might have an important role in the pathophysiology of depression and how different drugs affect depression through ER stress.
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Affiliation(s)
- Jiaxin Mao
- Department of Mental Health and Psychiatry, Medical School of Ningbo University, Ningbo, Zhejiang 315211, P.R. China
| | - Yanran Hu
- Department of Mental Health and Psychiatry, Medical School of Ningbo University, Ningbo, Zhejiang 315211, P.R. China
| | - Liemin Ruan
- Department of Psychosomatic Medicine, Ningbo First Hospital, Ningbo Hospital of Zhejiang University, Medical School of Ningbo University, Ningbo, Zhejiang 315010, P.R. China
| | - Yunxin Ji
- Department of Psychosomatic Medicine, Ningbo First Hospital, Ningbo Hospital of Zhejiang University, Medical School of Ningbo University, Ningbo, Zhejiang 315010, P.R. China
| | - Zhongze Lou
- Department of Psychosomatic Medicine, Ningbo First Hospital, Ningbo Hospital of Zhejiang University, Medical School of Ningbo University, Ningbo, Zhejiang 315010, P.R. China
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Wong J, Tran LT, Lynch KA, Wood LJ. Dexamethasone exacerbates cytotoxic chemotherapy induced lethargy and weight loss in female tumor free mice. Cancer Biol Ther 2018; 19:87-96. [PMID: 29231783 PMCID: PMC5790388 DOI: 10.1080/15384047.2017.1394549] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Accepted: 10/15/2017] [Indexed: 02/08/2023] Open
Abstract
Cytotoxic chemotherapy can induce a systemic inflammatory response which has been proposed to be an underlying mechanism of cancer treatment related fatigue. Dexamethasone, a synthetic glucocorticoid that has potent anti-inflammatory effects, is incorporated into chemotherapy regimens to prevent chemotherapy-induced nausea and vomiting (CINV). The purpose of this study was to determine whether by suppressing cytotoxic chemotherapy-induced inflammation, dexamethasone could ameliorate chemotherapy induced fatigue/lethargy in tumor free mice. The effect of dexamethasone (DEX) on Cytoxan-Adriamycin (CA)-induced inflammation was assessed by measuring circulating levels of IL-1β, TNF-α, IL-6, GCSF, KC, and MCP-1 twenty-four-hours post CA injection. Decline in voluntary wheel running activity (VWRA) from baseline (used as a proxy for fatigue/lethargy), body weight and composition, and food intake were monitored in mice administered four cycles of CA every two weeks with or without DEX. CA increased circulating levels of IL-6, GCSF, KC, and MCP-1 and caused a rapid decline in VWRA and body weight immediately following CA-injection. Although the acute CA-induced decline in VWRA and body weight was not evident in mice administered CA + DEX, DEX alone had a suppressive effect on VWRA, and body weight continued to decline in mice administered both CA and DEX while it returned to baseline in CA-treated mice. CA or DEX alone had no long term impact on VWRA but DEX exacerbated lethargy and weight loss in CA-treated mice. Despite dampening the systemic inflammatory response to chemotherapy, dexamethasone failed to ameliorate acute or long term chemotherapy related fatigue/lethargy. Our pre-clinical findings suggest that supportive therapies like dexamethasone used to acutely control nausea and vomiting in cancer patients may actually contribute to overall symptom burden in cancer patients.
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Affiliation(s)
- John Wong
- School of Nursing, MGH Institute of Health Professions, Boston MA, USA
| | - Lisa T. Tran
- School of Nursing, MGH Institute of Health Professions, Boston MA, USA
| | - Kaari A. Lynch
- School of Nursing, MGH Institute of Health Professions, Boston MA, USA
| | - Lisa J. Wood
- School of Nursing, MGH Institute of Health Professions, Boston MA, USA
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Numakawa T, Odaka H, Adachi N. Actions of Brain-Derived Neurotrophic Factor and Glucocorticoid Stress in Neurogenesis. Int J Mol Sci 2017; 18:ijms18112312. [PMID: 29099059 PMCID: PMC5713281 DOI: 10.3390/ijms18112312] [Citation(s) in RCA: 85] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Revised: 10/30/2017] [Accepted: 10/31/2017] [Indexed: 12/12/2022] Open
Abstract
Altered neurogenesis is suggested to be involved in the onset of brain diseases, including mental disorders and neurodegenerative diseases. Neurotrophic factors are well known for their positive effects on the proliferation/differentiation of both embryonic and adult neural stem/progenitor cells (NSCs/NPCs). Especially, brain-derived neurotrophic factor (BDNF) has been extensively investigated because of its roles in the differentiation/maturation of NSCs/NPCs. On the other hand, recent evidence indicates a negative impact of the stress hormone glucocorticoids (GCs) on the cell fate of NSCs/NPCs, which is also related to the pathophysiology of brain diseases, such as depression and autism spectrum disorder. Furthermore, studies including ours have demonstrated functional interactions between neurotrophic factors and GCs in neural events, including neurogenesis. In this review, we show and discuss relationships among the behaviors of NSCs/NPCs, BDNF, and GCs.
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Affiliation(s)
- Tadahiro Numakawa
- Department of Cell Modulation, Institute of Molecular Embryology and Genetics, Kumamoto University, Kumamoto 860-8555, Japan.
- Department of Mental Disorder Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry (NCNP), Tokyo 187-8551, Japan.
| | - Haruki Odaka
- Department of Cell Modulation, Institute of Molecular Embryology and Genetics, Kumamoto University, Kumamoto 860-8555, Japan.
- Department of Life Science and Medical Bioscience, School of Advanced Science and Engineering, Waseda University, Tokyo 169-8050, Japan.
| | - Naoki Adachi
- Department of Biomedical Chemistry, School of Science and Technology, Kwansei Gakuin University, Sanda City, Hyogo 662-8501, Japan.
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Mandelli L, Wang SM, Han C, Lee SJ, Patkar AA, Masand PS, Pae CU, Serretti A. The Impact of a Single Nucleotide Polymorphism in SIGMAR1 on Depressive Symptoms in Major Depressive Disorder and Bipolar Disorder. Adv Ther 2017; 34:713-724. [PMID: 28144920 DOI: 10.1007/s12325-017-0482-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2016] [Indexed: 10/20/2022]
Abstract
INTRODUCTION Ample evidence suggested a role of sigma-1 receptor in affective disorders since the interaction of numerous antidepressants with sigma receptors was discovered. A recent study on Japanese subjects found a genetic variant within the encoding gene SIGMAR1 (rs1800866A>C) associated with major depressive disorder (MDD). We aimed to evaluate the same polymorphism in both MDD and bipolar disorder (BD) as well as its relationship to response to treatment with antidepressants and mood stabilizers. METHODS A total of 238 MDD patients treated for an acute episode of depression, 132 BD patients in treatment with mood stabilizers for a manic or mixed episode, and 324 controls were genotyped for rs1800866. At discharge, response to treatments was evaluated in MDD and BD patients by the Hamilton Rating Scale for Depression (HRSD) and the Young Mania Rating Score (YMRS), respectively. RESULTS In our Korean sample, allele frequencies were different from those reported in other Asian and non-Asian populations. The CC genotype was associated with BD and, as a trend, with MDD. No significant effect was observed on response to antidepressants in MDD or mood stabilizers in BD, although the CC genotype was more frequent among BD patients experiencing a mixed episode. CONCLUSION The present findings are the first to propose the putative role of genetic variants within SIGMAR1 and sigma-1 receptor in BD. Sigma-1 receptor can modulate a number of central neurotransmitter systems as well as some other signaling pathways (e.g., neurotrophin and growth factor signaling) which are seemingly involved in BD and other mood disorders.
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Affiliation(s)
- Laura Mandelli
- Department of Biomedical and NeuroMotor Sciences, Institute of Psychiatry, University of Bologna, Bologna, Italy
| | - Sheng-Min Wang
- Department of Psychiatry, The Catholic University of Korea College of Medicine, Seoul, Republic of Korea
- International Health Care Center, Seoul St. Mary's Hospital, The Catholic University of Korea College of Medicine, Seoul, Korea
| | - Changsu Han
- Department of Psychiatry, Korea University, College of Medicine, Seoul, Republic of Korea
| | - Soo-Jung Lee
- Department of Psychiatry, The Catholic University of Korea College of Medicine, Seoul, Republic of Korea
| | - Ashwin A Patkar
- Department of Psychiatry and Behavioural Sciences, Duke University Medical Center, Durham, NC, USA
| | - Prakash S Masand
- Global Medical Education, New York, NY, USA
- Academic Medicine Education Institute, Duke-NUS Medical School, Singapore, Singapore
| | - Chi-Un Pae
- Department of Psychiatry, The Catholic University of Korea College of Medicine, Seoul, Republic of Korea.
- Department of Psychiatry and Behavioural Sciences, Duke University Medical Center, Durham, NC, USA.
| | - Alessandro Serretti
- Department of Biomedical and NeuroMotor Sciences, Institute of Psychiatry, University of Bologna, Bologna, Italy
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Cissé M, Duplan E, Checler F. The transcription factor XBP1 in memory and cognition: Implications in Alzheimer disease. Mol Med 2017; 22:905-917. [PMID: 28079229 DOI: 10.2119/molmed.2016.00229] [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: 11/21/2016] [Accepted: 12/23/2016] [Indexed: 12/21/2022] Open
Abstract
X-box binding protein 1 (XBP1) is a unique basic region leucine zipper transcription factor isolated two decades ago in a search for regulators of major histocompatibility complex class II gene expression. XBP1 is a very complex protein regulating many physiological functions, including immune system, inflammatory responses, and lipid metabolism. Evidence over the past few years suggests that XBP1 also plays important roles in pathological settings since its activity as transcription factor has profound effects on the prognosis and progression of diseases such as cancer, neurodegeneration, and diabetes. Here we provide an overview on recent advances in our understanding of this multifaceted molecule, particularly in regulating synaptic plasticity and memory function, and the implications in neurodegenerative diseases with emphasis on Alzheimer disease.
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Affiliation(s)
- Moustapha Cissé
- Université Côte d'Azur, INSERM, CNRS, IPMC, team labeled "Fondation pour la Recherche Médicale" and "Laboratory of Excellence (LABEX) Distalz", 660 route des Lucioles, 06560, Sophia-Antipolis, Valbonne, France
| | - Eric Duplan
- Université Côte d'Azur, INSERM, CNRS, IPMC, team labeled "Fondation pour la Recherche Médicale" and "Laboratory of Excellence (LABEX) Distalz", 660 route des Lucioles, 06560, Sophia-Antipolis, Valbonne, France
| | - Frédéric Checler
- Université Côte d'Azur, INSERM, CNRS, IPMC, team labeled "Fondation pour la Recherche Médicale" and "Laboratory of Excellence (LABEX) Distalz", 660 route des Lucioles, 06560, Sophia-Antipolis, Valbonne, France
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Maurice T, Goguadze N. Role of σ 1 Receptors in Learning and Memory and Alzheimer's Disease-Type Dementia. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2017; 964:213-233. [PMID: 28315274 DOI: 10.1007/978-3-319-50174-1_15] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
The present chapter will review the role of σ1 receptor in learning and memory and neuroprotection , against Alzheimer's type dementia. σ1 Receptor agonists have been tested in a variety of pharmacological and pathological models of learning impairments in rodents these last past 20 years. Their anti-amnesic effects have been explained by the wide-range modulatory role of σ1 receptors on Ca2+ mobilizations, neurotransmitter responses, and particularly glutamate and acetylcholine systems, and neurotrophic factors. Recent observations from genetic and pharmacological studies have shown that σ1 receptor can also be targeted in neurodegenerative diseases, and particularly Alzheimer's disease . Several compounds, acting partly through the σ1 receptor, have showed effective neuroprotection in transgenic mouse models of Alzheimer's disease . We will review the data and discuss the possible mechanisms of action, particularly focusing on oxidative stress and mitochondrial integrity, trophic factors and a novel hypothesis suggesting a functional interaction between the σ1 receptor and α7 nicotinic acetylcholine receptor. Finally, we will discuss the pharmacological peculiarities of non-selective σ1 receptor ligands, now developed as neuroprotectants in Alzheimer's disease , and positive modulators, recently described and that showed efficacy against learning and memory deficits.
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Affiliation(s)
- Tangui Maurice
- INSERM U1198, University of Montpellier, 34095, Montpellier, France.
| | - Nino Goguadze
- INSERM U1198, University of Montpellier, 34095, Montpellier, France
- Institute of Chemical Biology, Ilia State University, Tbilisi, 0162, GA, USA
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Strekalova T, Evans M, Chernopiatko A, Couch Y, Costa-Nunes J, Cespuglio R, Chesson L, Vignisse J, Steinbusch HW, Anthony DC, Pomytkin I, Lesch KP. Deuterium content of water increases depression susceptibility: the potential role of a serotonin-related mechanism. Behav Brain Res 2014; 277:237-44. [PMID: 25092571 DOI: 10.1016/j.bbr.2014.07.039] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2014] [Revised: 07/22/2014] [Accepted: 07/23/2014] [Indexed: 12/17/2022]
Abstract
Environmental factors can significantly affect disease prevalence, including neuropsychiatric disorders such as depression. The ratio of deuterium to protium in water shows substantial geographical variation, which could affect disease susceptibility. Thus the link between deuterium content of water and depression was investigated, both epidemiologically, and in a mouse model of chronic mild stress. We performed a correlation analysis between deuterium content of tap water and rates of depression in regions of the USA. Next, we used a 10-day chronic stress paradigm to test whether 2-week deuterium-depleted water treatment (91 ppm) affects depressive-like behavior and hippocampal SERT. The effect of deuterium-depletion on sleep electrophysiology was also evaluated in naïve mice. There was a geographic correlation between a content of deuterium and the prevalence of depression across the USA. In the chronic stress model, depressive-like features were reduced in mice fed with deuterium-depleted water, and SERT expression was decreased in mice treated with deuterium-treated water compared with regular water. Five days of predator stress also suppressed proliferation in the dentate gyrus; this effect was attenuated in mice fed with deuterium-depleted water. Finally, in naïve mice, deuterium-depleted water treatment increased EEG indices of wakefulness, and decreased duration of REM sleep, phenomena that have been shown to result from the administration of selective serotonin reuptake inhibitors (SSRI). Our data suggest that the deuterium content of water may influence the incidence of affective disorder-related pathophysiology and major depression, which might be mediated by the serotoninergic mechanisms.
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Affiliation(s)
- Tatyana Strekalova
- Department of Pharmacology, Oxford University, Oxford, UK; Institute for Hygiene and Tropical Medicine, New University of Lisbon, Portugal; School for Mental Health and Neuroscience, Department of Neuroscience, Maastricht University, Maastricht, Netherlands.
| | - Matthew Evans
- Department of Pharmacology, Oxford University, Oxford, UK
| | - Anton Chernopiatko
- Laboratory of Cognitive Dysfunctions, Institute of General Pathology and Pathophysiology, Moscow, Russia; Timantti AB, Stockholm, Sweden
| | - Yvonne Couch
- Department of Pharmacology, Oxford University, Oxford, UK
| | - João Costa-Nunes
- Institute for Hygiene and Tropical Medicine, New University of Lisbon, Portugal
| | - Raymond Cespuglio
- Claude Bernard University, Faculty of Medicine, EA 4170 Lyon, France
| | | | | | - Harry W Steinbusch
- School for Mental Health and Neuroscience, Department of Neuroscience, Maastricht University, Maastricht, Netherlands
| | | | - Igor Pomytkin
- Laboratory of Cognitive Dysfunctions, Institute of General Pathology and Pathophysiology, Moscow, Russia; Timantti AB, Stockholm, Sweden
| | - Klaus-Peter Lesch
- School for Mental Health and Neuroscience, Department of Neuroscience, Maastricht University, Maastricht, Netherlands; Division of Molecular Psychiatry, Laboratory of Translational Neuroscience, Department of Psychiatry, Psychosomatics and Psychotherapy, University of Wuerzburg, Wuerzburg, Germany.
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