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Tozzi F, Guglielmo S, Paraciani C, van den Oever MC, Mainardi M, Cattaneo A, Origlia N. Involvement of a lateral entorhinal cortex engram in episodic-like memory recall. Cell Rep 2024; 43:114795. [PMID: 39325619 DOI: 10.1016/j.celrep.2024.114795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Revised: 07/16/2024] [Accepted: 09/09/2024] [Indexed: 09/28/2024] Open
Abstract
Episodic memory relies on the entorhinal cortex (EC), a crucial hub connecting the hippocampus and sensory processing regions. This study investigates the role of the lateral EC (LEC) in episodic-like memory in mice. Here, we employ the object-place-context-recognition task (OPCRT), a behavioral test used to study episodic-like memory in rodents. Electrophysiology in brain slices reveals that OPCRT specifically induces a shift in the threshold for the induction of synaptic plasticity in LEC superficial layer II. Additionally, a dual viral system is used to express chemogenetic receptors coupled to the c-Fos promoter in neurons recruited during the learning. We demonstrate that the inhibition of LEC neurons impairs the performance of the mice in the memory task, while their stimulation significantly facilitates memory recall. Our findings provide evidence for an episodic-like memory engram in the LEC and emphasize its role in memory processing within the broader network of episodic memory.
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Affiliation(s)
- Francesca Tozzi
- BIO@SNS Laboratory, Scuola Normale Superiore, Via Moruzzi 1, 56124 Pisa, Italy; Institute of Neuroscience, National Research Council, Via Moruzzi 1, 56124 Pisa, Italy
| | - Stefano Guglielmo
- BIO@SNS Laboratory, Scuola Normale Superiore, Via Moruzzi 1, 56124 Pisa, Italy; Institute of Neuroscience, National Research Council, Via Moruzzi 1, 56124 Pisa, Italy
| | - Camilla Paraciani
- Institute of Neuroscience, National Research Council, Via Moruzzi 1, 56124 Pisa, Italy
| | - Michel C van den Oever
- Department of Molecular and Cellular Neurobiology, Center for Neurogenomics and Cognitive Research (CNCR), Amsterdam Neuroscience, Vrije Universiteit Amsterdam, De Boelelaan 1085, 1081 HV Amsterdam, the Netherlands
| | - Marco Mainardi
- Institute of Neuroscience, National Research Council, Via Moruzzi 1, 56124 Pisa, Italy; Department of Biomedical Sciences University of Padova, 35122 Padova, Italy
| | - Antonino Cattaneo
- BIO@SNS Laboratory, Scuola Normale Superiore, Via Moruzzi 1, 56124 Pisa, Italy; European Brain Research Institute Rita Levi-Montalcini, Via del Fosso di Fiorano 64/65, 00143 Rome, Italy
| | - Nicola Origlia
- Institute of Neuroscience, National Research Council, Via Moruzzi 1, 56124 Pisa, Italy.
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Wang Z, Lai C, Shen B, Li B, Chen J, Shen X, Huang Z, Yang C, Gao Y. Effects of Evodiamine on Behavior and Hippocampal Neurons through Inhibition of Angiotensin-Converting Enzyme and Modulation of the Renin Angiotensin Pathway in a Mouse Model of Post-Traumatic Stress Disorder. Nutrients 2024; 16:1957. [PMID: 38931311 PMCID: PMC11207023 DOI: 10.3390/nu16121957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2024] [Revised: 06/12/2024] [Accepted: 06/14/2024] [Indexed: 06/28/2024] Open
Abstract
Post-traumatic stress disorder (PTSD) is a persistent psychiatric condition that arises following exposure to traumatic events such as warfare, natural disasters, or other catastrophic incidents, typically characterized by heightened anxiety, depressive symptoms, and cognitive dysfunction. In this study, animals subjected to single prolonged stress (SPS) were administered evodiamine (EVO) and compared to a positive control group receiving sertraline. The animals were then assessed for alterations in anxiety, depression, and cognitive function. Histological analysis was conducted to examine neuronal changes in the hippocampus. In order to predict the core targets and related mechanisms of evodiamine intervention in PTSD, network pharmacology was used. The metabolic markers pre- and post-drug administration were identified using nontargeted serum metabolomics techniques, and the intersecting Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways were screened. Finally, the core targets were validated through molecular docking, enzyme-linked immunosorbent assays, and immunofluorescence staining to confirm the anti-PTSD effects and mechanisms of these targets. As well as improving cognitive impairment, evodiamine reversed anxiety- and depression-like behaviors. It also inhibited the reduction in the number of hippocampal neuronal cells and Nissl bodies in SPS mice inhibited angiotensin converting enzyme (ACE) levels in the hippocampus of SPS mice, and modulated the renin angiotensin pathway and its associated serum metabolites in brain tissue. Evodiamine shows promise as a potential candidate for alleviating the symptoms of post-traumatic stress disorder.
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Affiliation(s)
- Zhixing Wang
- Medical College, Qinghai University, Xining 810016, China; (Z.W.); (C.L.)
- Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Beijing 100850, China; (B.S.); (B.L.); (J.C.); (X.S.); (C.Y.)
| | - Chengcai Lai
- Medical College, Qinghai University, Xining 810016, China; (Z.W.); (C.L.)
- Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Beijing 100850, China; (B.S.); (B.L.); (J.C.); (X.S.); (C.Y.)
| | - Baoying Shen
- Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Beijing 100850, China; (B.S.); (B.L.); (J.C.); (X.S.); (C.Y.)
| | - Bowei Li
- Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Beijing 100850, China; (B.S.); (B.L.); (J.C.); (X.S.); (C.Y.)
| | - Junru Chen
- Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Beijing 100850, China; (B.S.); (B.L.); (J.C.); (X.S.); (C.Y.)
| | - Xin Shen
- Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Beijing 100850, China; (B.S.); (B.L.); (J.C.); (X.S.); (C.Y.)
| | - Zhengping Huang
- Department of Neurology, Fujian Medical University, Quanzhou 362000, China;
| | - Chunqi Yang
- Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Beijing 100850, China; (B.S.); (B.L.); (J.C.); (X.S.); (C.Y.)
| | - Yue Gao
- Medical College, Qinghai University, Xining 810016, China; (Z.W.); (C.L.)
- Department of Pharmaceutical Sciences, Beijing Institute of Radiation Medicine, Beijing 100850, China; (B.S.); (B.L.); (J.C.); (X.S.); (C.Y.)
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Spreen A, Alkhoury D, Walter H, Müller S. Optogenetic behavioral studies in depression research: A systematic review. iScience 2024; 27:109776. [PMID: 38726370 PMCID: PMC11079475 DOI: 10.1016/j.isci.2024.109776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 10/21/2023] [Accepted: 04/15/2024] [Indexed: 05/12/2024] Open
Abstract
Optogenetics has made substantial contributions to our understanding of the mechanistic underpinnings of depression. This systematic review employs quantitative analysis to investigate the impact of optogenetic stimulation in mice and rats on behavioral alterations in social interaction, sucrose consumption, and mobility. The review analyses optogenetic behavioral studies using standardized behavioral tests to detect behavioral changes induced via optogenetic stimulation in stressed or stress-naive mice and rats. Behavioral changes were evaluated as either positive, negative, or not effective. The analysis comprises the outcomes of 248 behavioral tests of 168 studies described in 37 articles, including negative and null results. Test outcomes were compared for each behavior, depending on the animal cohort, applied type of stimulation and the stimulated neuronal circuit and cell type. The presented synthesis contributes toward a comprehensive picture of optogenetic behavioral research in the context of depression.
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Affiliation(s)
- Anika Spreen
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Psychiatry and Neurosciences, CCM, Berlin, Germany
- Experimental Biophysics, Institute for Biology, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Dana Alkhoury
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Psychiatry and Neurosciences, CCM, Berlin, Germany
| | - Henrik Walter
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Psychiatry and Neurosciences, CCM, Berlin, Germany
| | - Sabine Müller
- Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Psychiatry and Neurosciences, CCM, Berlin, Germany
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de Meiroz Grilo MLP, de Sousa GM, de Mendonça LAC, Lobão-Soares B, de Sousa MBC, Palhano-Fontes F, de Araujo DB, Perkins D, Hallak JEC, Galvão-Coelho NL. Prophylactic action of ayahuasca in a non-human primate model of depressive-like behavior. Front Behav Neurosci 2022; 16:901425. [PMID: 36408451 PMCID: PMC9672345 DOI: 10.3389/fnbeh.2022.901425] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Accepted: 09/29/2022] [Indexed: 09/13/2023] Open
Abstract
Observational studies of long-term users of ayahuasca, an Amazonian psychedelic brew, suggest an increase in resilience via improvements in emotion and cognition. Ayahuasca has also demonstrated clinical antidepressant effects in human and animal studies; however, its potential prophylactic action in depression has not been previously studied. Therefore, this experimental study sought to evaluate the potential prophylactic effects of repeated and long-term ayahuasca use, via the modulation of resilience, in a non-human primate animal model, Callithrix jacchus, subjected to a protocol for induction of depressive-like behavior. For the formation of the study groups, some juvenile marmosets were kept in their family groups (GF = 7), while for the two experimental groups, the animals were removed from the family and kept socially isolated. Then, part of the isolated animals made up the group in which ayahuasca was administered (AG, n = 6), while for others, no intervention was made (IG, n = 5). AG animals took ayahuasca (1.67 mL/300g body weight) at weeks 4 (before isolation), 8, and 12 (during isolation) of the study. More adaptive stress response was observed for the AG when compared to the IG. The AG showed higher cortisol reactivity and fecal cortisol levels than IG, while both measures were similar to FG. Moreover, AG animals showed no signs of anhedonia and no increase in chronic stress-related behaviors, which were expressed by the IG. Thus, ayahuasca seems to promote the expression of resilient responses, indicating a prophylactic action, buffering the emergence of depressive-like behaviors and cortisol alterations associated with major depression. These results are encouraging for further research on the prophylactic use of psychedelics to prevent psychopathologies associated with chronic stress.
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Affiliation(s)
- Maria Lara Porpino de Meiroz Grilo
- Laboratory of Hormone Measurement, Department of Physiology and Behavior, Federal University of Rio Grande do Norte (UFRN), Natal, RN, Brazil
- Postgraduate Program in Psychobiology, Department of Physiology and Behavior, Federal University of Rio Grande do Norte (UFRN), Natal, RN, Brazil
| | - Geovan Menezes de Sousa
- Laboratory of Hormone Measurement, Department of Physiology and Behavior, Federal University of Rio Grande do Norte (UFRN), Natal, RN, Brazil
- Postgraduate Program in Psychobiology, Department of Physiology and Behavior, Federal University of Rio Grande do Norte (UFRN), Natal, RN, Brazil
| | - Lilían Andrade Carlos de Mendonça
- Laboratory of Hormone Measurement, Department of Physiology and Behavior, Federal University of Rio Grande do Norte (UFRN), Natal, RN, Brazil
| | - Bruno Lobão-Soares
- Postgraduate Program in Psychobiology, Department of Physiology and Behavior, Federal University of Rio Grande do Norte (UFRN), Natal, RN, Brazil
- Department of Biophysics and Pharmacology, UFRN, Natal, RN, Brazil
- National Science and Technology Institute for Translational Medicine (INCT-TM), São Paulo, Brazil
| | - Maria Bernardete Cordeiro de Sousa
- Laboratory of Hormone Measurement, Department of Physiology and Behavior, Federal University of Rio Grande do Norte (UFRN), Natal, RN, Brazil
- Postgraduate Program in Psychobiology, Department of Physiology and Behavior, Federal University of Rio Grande do Norte (UFRN), Natal, RN, Brazil
- Brain Institute, Federal University of Rio Grande do Norte (UFRN), Natal, RN, Brazil
| | | | | | - Daniel Perkins
- School of Social and Political Science, University of Melbourne, Melbourne, VIC, Australia
| | - Jaime Eduardo Cecilio Hallak
- National Science and Technology Institute for Translational Medicine (INCT-TM), São Paulo, Brazil
- Department of Neuroscience and Behavioral Sciences, University of São Paulo, São Paulo, Brazil
| | - Nicole Leite Galvão-Coelho
- Laboratory of Hormone Measurement, Department of Physiology and Behavior, Federal University of Rio Grande do Norte (UFRN), Natal, RN, Brazil
- Postgraduate Program in Psychobiology, Department of Physiology and Behavior, Federal University of Rio Grande do Norte (UFRN), Natal, RN, Brazil
- National Science and Technology Institute for Translational Medicine (INCT-TM), São Paulo, Brazil
- Department of Physiology and Behavior, UFRN, Natal, RN, Brazil
- NICM Health Research Institute, Western Sydney University, Westmead, NSW, Australia
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Xu P, Yue Y, Su J, Sun X, Du H, Liu Z, Simha R, Zhou J, Zeng C, Lu H. Pattern decorrelation in the mouse medial prefrontal cortex enables social preference and requires MeCP2. Nat Commun 2022; 13:3899. [PMID: 35794118 PMCID: PMC9259602 DOI: 10.1038/s41467-022-31578-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Accepted: 06/21/2022] [Indexed: 11/08/2022] Open
Abstract
Sociability is crucial for survival, whereas social avoidance is a feature of disorders such as Rett syndrome, which is caused by loss-of-function mutations in MECP2. To understand how a preference for social interactions is encoded, we used in vivo calcium imaging to compare medial prefrontal cortex (mPFC) activity in female wild-type and Mecp2-heterozygous mice during three-chamber tests. We found that mPFC pyramidal neurons in Mecp2-deficient mice are hypo-responsive to both social and nonsocial stimuli. Hypothesizing that this limited dynamic range restricts the circuit's ability to disambiguate coactivity patterns for different stimuli, we suppressed the mPFC in wild-type mice and found that this eliminated both pattern decorrelation and social preference. Conversely, stimulating the mPFC in MeCP2-deficient mice restored social preference, but only if it was sufficient to restore pattern decorrelation. A loss of social preference could thus indicate impaired pattern decorrelation rather than true social avoidance.
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Affiliation(s)
- Pan Xu
- The GW Institute for Neuroscience, The George Washington University, Washington, DC, 20037, USA
- Department of Pharmacology and Physiology, School of Medicine and Health Sciences, The George Washington University, Washington, DC, 20037, USA
- Institute of Basic Science, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, 250021, China
- Medical Science and Technology Innovation Center, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, Shandong, 250000, China
| | - Yuanlei Yue
- The GW Institute for Neuroscience, The George Washington University, Washington, DC, 20037, USA
- Department of Pharmacology and Physiology, School of Medicine and Health Sciences, The George Washington University, Washington, DC, 20037, USA
| | - Juntao Su
- The GW Institute for Neuroscience, The George Washington University, Washington, DC, 20037, USA
| | - Xiaoqian Sun
- Department of Computer Science, School of Engineering and Applied Science, The George Washington University, Washington, DC, 20037, USA
| | - Hongfei Du
- Department of Statistics, Columbian College of Art and Sciences, The George Washington University, Washington, DC, 20037, USA
| | - Zhichao Liu
- Department of Physics, Columbian College of Art and Sciences, The George Washington University, Washington, DC, 20037, USA
- School of Biological Information, Chongqing University of Posts and Telecommunications, Chongqing, 400065, China
| | - Rahul Simha
- Department of Computer Science, School of Engineering and Applied Science, The George Washington University, Washington, DC, 20037, USA
| | - Jianhui Zhou
- Department of Statistics, School of Arts and Sciences, University of Virginia, Charlottesville, VA, 22904, USA
| | - Chen Zeng
- Department of Statistics, Columbian College of Art and Sciences, The George Washington University, Washington, DC, 20037, USA
| | - Hui Lu
- The GW Institute for Neuroscience, The George Washington University, Washington, DC, 20037, USA.
- Department of Pharmacology and Physiology, School of Medicine and Health Sciences, The George Washington University, Washington, DC, 20037, USA.
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6
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Anxiety-like Behavior and GABAAR/BDZ Binding Site Response to Progesterone Withdrawal in a Stress-Vulnerable Strain, the Wistar Kyoto Rats. Int J Mol Sci 2022; 23:ijms23137259. [PMID: 35806264 PMCID: PMC9266311 DOI: 10.3390/ijms23137259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 06/16/2022] [Accepted: 06/19/2022] [Indexed: 12/10/2022] Open
Abstract
Stress susceptibility could play a role in developing premenstrual anxiety due to abnormalities in the hypothalamus–pituitary–adrenal (HPA) axis and impairments in the GABAA receptors’ benzodiazepine (BDZ) site. Hence, we studied the stress-vulnerable Wistar Kyoto rat strain (WKY) to evaluate progesterone withdrawal (PW) effects on anxiety, HPA axis response, and to explore indicators of GABAA functionality in the BDZ site. For five days, ovariectomized WKY rats were administered 2.0 mg/kg of progesterone. Twenty-four hours after the last administration, rats were tested in the anxiety-like burying behavior test (BBT) or elevated plus maze test (EPM), and corticosterone was determined. [3H]Flunitrazepam binding autoradiography served as the BDZ binding site index of the GABAA receptor in amygdala nuclei and hippocampus’s dentate gyrus (DG). Finally, different doses of diazepam in PW-WKY rats were tested in the BBT. PW induced anxiety-like behaviors in both BBT and EPM compared with No-PW rats. PW increased corticosterone, but was blunted when combined with PW and BBT. PW increased [3H]Flunitrazepam binding in the DG and central amygdala compared with No-PW rats. Diazepam at a low dose induced an anxiogenic-like response in PW rats, suggesting a paradoxical response to benzodiazepines. Overall, PW induced anxiety-like behavior, a blunted HPA axis response, and higher GABAAR/BZD binding site sensitivity in a stress-vulnerable rat strain. These findings demonstrate the role of stress-susceptibility in GABAAR functionality in a preclinical approximation of PMDD.
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Song C, Li S, Duan F, Liu M, Shan S, Ju T, Zhang Y, Lu W. The Therapeutic Effect of Acanthopanax senticosus Components on Radiation-Induced Brain Injury Based on the Pharmacokinetics and Neurotransmitters. Molecules 2022; 27:1106. [PMID: 35164373 PMCID: PMC8839712 DOI: 10.3390/molecules27031106] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 01/30/2022] [Accepted: 02/04/2022] [Indexed: 11/30/2022] Open
Abstract
Acanthopanax senticosus (AS) is a medicinal and food homologous plant with many biological activities. In this research, we generated a brain injury model by 60Co -γ ray radiation at 4 Gy, and gavaged adult mice with the extract with AS, Acanthopanax senticocus polysaccharides (ASPS), flavones, syringin and eleutheroside E (EE) to explore the therapeutic effect and metabolic characteristics of AS on the brain injury. Behavioral tests and pathological experiments showed that the AS prevented the irradiated mice from learning and memory ability impairment and protected the neurons of irradiated mice. Meanwhile, the functional components of AS increased the antioxidant activity of irradiated mice. Furthermore, we found the changes of neurotransmitters, especially in the EE and syringin groups. Finally, distribution and pharmacokinetic analysis of AS showed that the functional components, especially EE, could exert their therapeutic effects in brain of irradiated mice. This lays a theoretical foundation for the further research on the treatment of radiation-induced brain injury by AS.
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Affiliation(s)
- Chen Song
- Department of Food Science and Engineering, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China; (C.S.); (S.L.); (F.D.); (M.L.); (S.S.); (T.J.); (Y.Z.)
- School of Medicine and Health, Harbin Institute of Technology, Harbin 150001, China
- National and Local Joint Engineering Laboratory for Synthesis, Transformation and Separation of Extreme Environmental Nutrients, Harbin Institute of Technology, Harbin 150001, China
| | - Sijia Li
- Department of Food Science and Engineering, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China; (C.S.); (S.L.); (F.D.); (M.L.); (S.S.); (T.J.); (Y.Z.)
- School of Medicine and Health, Harbin Institute of Technology, Harbin 150001, China
- National and Local Joint Engineering Laboratory for Synthesis, Transformation and Separation of Extreme Environmental Nutrients, Harbin Institute of Technology, Harbin 150001, China
| | - Fangyuan Duan
- Department of Food Science and Engineering, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China; (C.S.); (S.L.); (F.D.); (M.L.); (S.S.); (T.J.); (Y.Z.)
- School of Medicine and Health, Harbin Institute of Technology, Harbin 150001, China
- National and Local Joint Engineering Laboratory for Synthesis, Transformation and Separation of Extreme Environmental Nutrients, Harbin Institute of Technology, Harbin 150001, China
| | - Mengyao Liu
- Department of Food Science and Engineering, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China; (C.S.); (S.L.); (F.D.); (M.L.); (S.S.); (T.J.); (Y.Z.)
- School of Medicine and Health, Harbin Institute of Technology, Harbin 150001, China
- National and Local Joint Engineering Laboratory for Synthesis, Transformation and Separation of Extreme Environmental Nutrients, Harbin Institute of Technology, Harbin 150001, China
| | - Shan Shan
- Department of Food Science and Engineering, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China; (C.S.); (S.L.); (F.D.); (M.L.); (S.S.); (T.J.); (Y.Z.)
- School of Medicine and Health, Harbin Institute of Technology, Harbin 150001, China
- National and Local Joint Engineering Laboratory for Synthesis, Transformation and Separation of Extreme Environmental Nutrients, Harbin Institute of Technology, Harbin 150001, China
| | - Ting Ju
- Department of Food Science and Engineering, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China; (C.S.); (S.L.); (F.D.); (M.L.); (S.S.); (T.J.); (Y.Z.)
- School of Medicine and Health, Harbin Institute of Technology, Harbin 150001, China
- National and Local Joint Engineering Laboratory for Synthesis, Transformation and Separation of Extreme Environmental Nutrients, Harbin Institute of Technology, Harbin 150001, China
| | - Yingchun Zhang
- Department of Food Science and Engineering, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China; (C.S.); (S.L.); (F.D.); (M.L.); (S.S.); (T.J.); (Y.Z.)
- School of Medicine and Health, Harbin Institute of Technology, Harbin 150001, China
- National and Local Joint Engineering Laboratory for Synthesis, Transformation and Separation of Extreme Environmental Nutrients, Harbin Institute of Technology, Harbin 150001, China
| | - Weihong Lu
- Department of Food Science and Engineering, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China; (C.S.); (S.L.); (F.D.); (M.L.); (S.S.); (T.J.); (Y.Z.)
- School of Medicine and Health, Harbin Institute of Technology, Harbin 150001, China
- National and Local Joint Engineering Laboratory for Synthesis, Transformation and Separation of Extreme Environmental Nutrients, Harbin Institute of Technology, Harbin 150001, China
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Relationship between infantile mother preference and neural regions activated by maternal contact in C57BL/6 mice. Neurosci Res 2022; 178:69-77. [DOI: 10.1016/j.neures.2022.01.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 01/24/2022] [Accepted: 01/28/2022] [Indexed: 11/19/2022]
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9
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Effect of depression and anxiety on human schedule performance. LEARNING AND MOTIVATION 2021. [DOI: 10.1016/j.lmot.2021.101746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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10
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Exploratory drive, fear, and anxiety are dissociable and independent components in foraging mice. Transl Psychiatry 2021; 11:318. [PMID: 34039953 PMCID: PMC8155035 DOI: 10.1038/s41398-021-01458-9] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Revised: 04/20/2021] [Accepted: 05/12/2021] [Indexed: 02/07/2023] Open
Abstract
Anxiety-like behavior of rodents is frequently accompanied by reduced exploration. Here, we identify dissociable components of anxiety, fear, and exploratory drive of sated and foraging mice. With the help of behavioral assays, including the open field task, elevated plus maze, dark-light transition task, and beetle mania task, we demonstrate a general increase in exploration by food restriction. Food-restricted mice bred for high anxiety behavior (HAB) showed ameliorated anxiety- but not fear-related behavior. By means of principal component analysis, we identified three independent components, which resemble the behavioral dimensions proposed by Gray's Reinforcement Sensitivity Theory (approach behavior, avoidance behavior, and decision making). Taken together, we demonstrate anxiolytic consequences of food restriction in a mouse model of anxiety disorders that can be dissociated from a general increase in foraging behavior.
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Memories are not written in stone: Re-writing fear memories by means of non-invasive brain stimulation and optogenetic manipulations. Neurosci Biobehav Rev 2021; 127:334-352. [PMID: 33964307 DOI: 10.1016/j.neubiorev.2021.04.036] [Citation(s) in RCA: 58] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 03/29/2021] [Accepted: 04/29/2021] [Indexed: 11/21/2022]
Abstract
The acquisition of fear associative memory requires brain processes of coordinated neural activity within the amygdala, prefrontal cortex (PFC), hippocampus, thalamus and brainstem. After fear consolidation, a suppression of fear memory in the absence of danger is crucial to permit adaptive coping behavior. Acquisition and maintenance of fear extinction critically depend on amygdala-PFC projections. The robust correspondence between the brain networks encompassed cortical and subcortical hubs involved into fear processing in humans and in other species underscores the potential utility of comparing the modulation of brain circuitry in humans and animals, as a crucial step to inform the comprehension of fear mechanisms and the development of treatments for fear-related disorders. The present review is aimed at providing a comprehensive description of the literature on recent clinical and experimental researches regarding the noninvasive brain stimulation and optogenetics. These innovative manipulations applied over specific hubs of fear matrix during fear acquisition, consolidation, reconsolidation and extinction allow an accurate characterization of specific brain circuits and their peculiar interaction within the specific fear processing.
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12
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Calarco CA, Lobo MK. Depression and substance use disorders: Clinical comorbidity and shared neurobiology. INTERNATIONAL REVIEW OF NEUROBIOLOGY 2020; 157:245-309. [PMID: 33648671 DOI: 10.1016/bs.irn.2020.09.004] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Mood disorders, including major depressive disorder (MDD), are the most prevalent psychiatric illnesses, and pose an incredible burden to society, both in terms of disability and in terms of costs associated with medical care and lost work time. MDD has extremely high rates of comorbidity with substance use disorders (SUD) as many of the same neurobiological circuits and molecular mechanisms regulate the reward pathways disrupted in both conditions. MDD may induce SUDs, SUD may contribute to MDD development, or underlying vulnerabilities and common life experience may confer risk to developing both conditions. In this chapter we explore theories of MDD and SUD comorbidity, the neurobiological underpinnings of depression, overlapping cellular and molecular pathways for both conditions, and current treatment approaches for these comorbid conditions.
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Affiliation(s)
- Cali A Calarco
- Department of Anatomy and Neurobiology, University of Maryland School of Medicine, Baltimore, MD, United States
| | - Mary Kay Lobo
- Department of Anatomy and Neurobiology, University of Maryland School of Medicine, Baltimore, MD, United States.
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13
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Dygalo NN, Kalinina TS, Shishkina GT. Stress-induced expression pattern of glutamate signaling genes associated with anhedonia. Stress 2020; 23:700-707. [PMID: 32814471 DOI: 10.1080/10253890.2020.1812574] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Chronic stress can predispose vulnerable individuals to mood disorders, including depression. Glutamate, one of the key participants in this process, may exert both pathological and therapeutic psycho-emotional effects. However, the role of expression of genes encoding proteins that provide glutamatergic signal is still unclear. In this study, we attempted to distinguish changes in expression of glutamatergic genes associated with stress-induced anhedonia, a core symptom of depression, from those related to other stress-related effects. For this, expression of genes was compared between rats after a short-term stress, which did not yet cause depressive-like symptoms, and animals exposed chronically to different stressors that produce anhedonia-like responses. The changes in gene expression induced by chronic restraint or forced swimming concomitantly with anhedonia development demonstrated similar for both stressors patterns. Main features of the expression patterns include the decrease in mRNA levels for AMPA and NMDA subunits in the midbrain and hippocampus that is consistent with the hypothesis that "monoamine (serotonin)-Glutamate/GABA long neural circuit" involved in mood regulation. The decrease in expression of these subunits in the midbrain may attenuate glutamatergic drive on the serotonergic neurons promoting a shift of excitation/inhibition balance between glutamate and GABA in the forebrain regions resulting in anhedonia. In general, changes in expression of multiple genes involved in glutamatergic neurotransmission in the forebrain and brainstem regions suggest that stress-induced anhedonia may result from the network dysfunction of this neurotransmitter system.
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Affiliation(s)
- Nikolay N Dygalo
- Laboratory of Functional Neurogenomics, Federal Research Center Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Science, Novosibirsk, Russia
- Novosibirsk State University, Novosibirsk, Russia
| | - Tatyana S Kalinina
- Laboratory of Functional Neurogenomics, Federal Research Center Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Science, Novosibirsk, Russia
| | - Galina T Shishkina
- Laboratory of Functional Neurogenomics, Federal Research Center Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Science, Novosibirsk, Russia
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14
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Tsai AC, Huang ACW, Yu YH, Kuo CS, Hsu CC, Lim YS, Shyu BC. A Wireless Magnetic Resonance Device for Optogenetic Applications in an Animal Model. SENSORS 2020; 20:s20205869. [PMID: 33081369 PMCID: PMC7590226 DOI: 10.3390/s20205869] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Revised: 10/12/2020] [Accepted: 10/13/2020] [Indexed: 12/29/2022]
Abstract
The currents of optical stimulation devices with tethered or untethered systems have various disadvantages, including optical fiber breakage, disrupted animal movements, heavy batteries carried on heads, and high-frequency electromagnetic impacts. Our novel wireless remote control was developed to address these issues. The novel wireless device uses a magnetic resonance technique to modify the deficits of the conventional magnetic induction or radio-frequency power sources. The present device emits a strong and steady electromagnetic power. It is cheaper than previous versions, and the receiver coil on its head is very light (≦ 1 g). For the present wireless remote-controlled device, the electromagnetic field's range (i.e., +5 cm and -5 cm of the outside coil) is larger than the range for the magnetic induction and radio-frequency power sources. The present device controls animals' behavior by the electromagnetic field's effective range via photostimulation. The novel wireless remote-controlled device with a magnetic resonance technique can be applied in many behavioral tasks in mice and rats. To avoid the adverse effects of high radio frequency and to extend the electromagnetic field's range, this novel technique serves as a helpful tool to modulate the neuronal activity of target neurons in specific brain areas for optogenetic experiments.
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Affiliation(s)
- Arthur C. Tsai
- Institute of Statistical Science, Academia Sinica, Taipei 11529, Taiwan; (A.C.T.); (C.-S.K.); (C.-C.H.)
| | - Andrew Chih Wei Huang
- Department of Psychology, Fo Guang University, Yilan County 26247, Taiwan; (A.C.W.H.); (Y.H.Y.); (Y.S.L.)
| | - Ying Hao Yu
- Department of Psychology, Fo Guang University, Yilan County 26247, Taiwan; (A.C.W.H.); (Y.H.Y.); (Y.S.L.)
| | - Chii-Shyang Kuo
- Institute of Statistical Science, Academia Sinica, Taipei 11529, Taiwan; (A.C.T.); (C.-S.K.); (C.-C.H.)
| | - Chih-Chan Hsu
- Institute of Statistical Science, Academia Sinica, Taipei 11529, Taiwan; (A.C.T.); (C.-S.K.); (C.-C.H.)
| | - Yeou San Lim
- Department of Psychology, Fo Guang University, Yilan County 26247, Taiwan; (A.C.W.H.); (Y.H.Y.); (Y.S.L.)
| | - Bai Chuang Shyu
- Institute of Biomedical Sciences, Academia Sinica, Taipei 1529, Taiwan
- Correspondence: ; Tel.: +886-2-2652-3915; Fax: +886-2-2782-9224
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15
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Johnson AC, Louwies T, Ligon CO, Greenwood-Van Meerveld B. Enlightening the frontiers of neurogastroenterology through optogenetics. Am J Physiol Gastrointest Liver Physiol 2020; 319:G391-G399. [PMID: 32755304 PMCID: PMC7717115 DOI: 10.1152/ajpgi.00384.2019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Neurogastroenterology refers to the study of the extrinsic and intrinsic nervous system circuits controlling the gastrointestinal (GI) tract. Over the past 5-10 yr there has been an explosion in novel methodologies, technologies and approaches that offer great promise to advance our understanding of the basic mechanisms underlying GI function in health and disease. This review focuses on the use of optogenetics combined with electrophysiology in the field of neurogastroenterology. We discuss how these technologies and tools are currently being used to explore the brain-gut axis and debate the future research potential and limitations of these techniques. Taken together, we consider that the use of these technologies will enable researchers to answer important questions in neurogastroenterology through fundamental research. The answers to those questions will shorten the path from basic discovery to new treatments for patient populations with disorders of the brain-gut axis affecting the GI tract such as irritable bowel syndrome (IBS), functional dyspepsia, achalasia, and delayed gastric emptying.
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Affiliation(s)
- Anthony C. Johnson
- 1Oklahoma Center for Neuroscience, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma,2Oklahoma City Veterans Affairs Health Care System, Oklahoma City, Oklahoma,3Department of Neurology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Tijs Louwies
- 1Oklahoma Center for Neuroscience, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Casey O. Ligon
- 1Oklahoma Center for Neuroscience, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Beverley Greenwood-Van Meerveld
- 1Oklahoma Center for Neuroscience, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma,2Oklahoma City Veterans Affairs Health Care System, Oklahoma City, Oklahoma,4Department of Physiology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
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16
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Schaffner KF. A Comparison of Two Neurobiological Models of Fear and Anxiety: A "Construct Validity" Application? PERSPECTIVES ON PSYCHOLOGICAL SCIENCE 2020; 15:1214-1227. [PMID: 32598853 DOI: 10.1177/1745691620920860] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The main focus of this article is on an application of "construct validity," although it is better thought of as a construct-progressivity assessment (CPA) for reasons developed in the article and related to the concepts of "truth" and "validity" in science. The specific example presented involves the recent LeDoux and Pine two-system model (TSM) and the more traditional fear-center model (FCM), two important constructs in even broader debates in recent fear research. The focal point of the TSM-FCM dispute is arguably the contrasting interpretation of four empirical "findings" that are summarized in a section on findings of this article and then explored later in depth as "empirical arguments." This notion of an empirical argument is closely related to Kane's "argument-based" analysis of construct validity. In addition, it is essential to describe and then apply what are called "epistemic values" to the TSM-FCM example. The CPA in the present article ultimately tilts in favor of the TSM and against the FCM, on empirical as well as on more general epistemic-value grounds, with the caveat that any CPA is temporally contingent and may reach a different conclusion later, depending on future instruments and advances.
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17
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Medaglia JD, Kuersten A, Hamilton RH. Protecting Decision-Making in the Era of Neuromodulation. JOURNAL OF COGNITIVE ENHANCEMENT 2020. [DOI: 10.1007/s41465-020-00171-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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18
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Happ DF, Wegener G, Tasker RA. Effect of ischemic lesions in medial prefrontal cortex and nucleus accumbens on affective behavior in rats. Behav Brain Res 2020; 378:112234. [PMID: 31521735 DOI: 10.1016/j.bbr.2019.112234] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Revised: 08/13/2019] [Accepted: 09/11/2019] [Indexed: 02/05/2023]
Abstract
Post-stroke depression (PSD) and post-stroke anxiety (PSA) are usually undertreated and many cases may remain undiagnosed, indicating a need for a better understanding of the underlying mechanisms. Current animal models of PSD and PSA using the middle cerebral artery occlusion model may be associated with motor deficits that can interfere with behavioral tests of depression- and anxiety-like behavior. Unilateral lesions of the medial prefrontal cortex (mPFC) have been reported to induce a depression- and anxiety-like phenotype in mice. The aim of this study was to examine the effects of unilateral microinjections of the vasoconstrictor endothelin-1 (ET-1) in the mPFC alone or in combination with the nucleus accumbens (NAc) on the behavior of rats after 2 and 6 weeks. Specifically, we measured anxiety- and depressive-like behavior, locomotion, and cognition. ET-1 injections in the mPFC and NAc resulted in replicable and localized lesions. Lesions to the mPFC and NAc resulted in more time spent in the open arms of the Elevated Plus Maze compared to sham-operated animals at 2 weeks post stroke, indicating decreased anxiety. This effect did not persist until 6 weeks post injection. No differences in locomotion, cognition and depressive-like behavior were found at either time point. In summary, unilateral lesions of mPFC and NAc did not produce a reliable and persistent anxiety and depression phenotype in rats.
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Affiliation(s)
- Denise F Happ
- Translational Neuropsychiatry Unit, Department of Clinical Medicine, Aarhus University, Denmark.
| | - Gregers Wegener
- Translational Neuropsychiatry Unit, Department of Clinical Medicine, Aarhus University, Denmark
| | - R Andrew Tasker
- Translational Neuropsychiatry Unit, Department of Clinical Medicine, Aarhus University, Denmark; Department of Biomedical Sciences, University of Prince Edward Island, Canada
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19
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Biselli T, Lange SS, Sablottny L, Steffen J, Walther A. Optogenetic and chemogenetic insights into the neurocircuitry of depression-like behaviour: A systematic review. Eur J Neurosci 2019; 53:9-38. [PMID: 31633833 DOI: 10.1111/ejn.14603] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Revised: 09/13/2019] [Accepted: 10/14/2019] [Indexed: 12/13/2022]
Abstract
Major depressive disorder (MDD) and its treatment are challenges for global health. Optogenetics and chemogenetics are driving MDD research forward by unveiling causal relations between cell-type-specific control of neurons and depressive-like behaviour in rodents. Using a systematic search process, in this review, a set of 43 original studies applying optogenetic or chemogenetic techniques in rodent models of depression was identified. Our aim was to provide an examination of all available studies elucidating central neuronal mechanisms leading to depressive-like behaviour in rodents and thereby unveiling the most promising routes for future research. A complex interacting network of relevant structures, in which central circuitries causally related to depressive-like behaviour are implicated, has been identified. As most relevant structures emerge: medial prefrontal cortex, anterior cingulate cortex, amygdala, nucleus accumbens, ventral tegmental area, hippocampus and raphe nuclei. Further evidence, though examined by only few studies, emerges for structures like the lateral habenula, or medial dorsal thalamus. Most of the identified brain areas have previously been associated with MDD neuropathology, but now evidence can be provided for causal pathological mechanisms within a complex cortico-limbic reward circuitry. However, the studies also show conflicting results concerning the mechanisms underlying the causal involvement of specific circuitries. Comparability of studies is partly limited since even small deviations in methodological approaches lead to different outcomes. Factors influencing study outcomes were identified and need to be considered in future studies (e.g. frequency used for stimulation, time and duration of stimulation, limitations of applied animal models of MDD).
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Affiliation(s)
- Tom Biselli
- Biological Psychology, TU Dresden, Dresden, Germany
| | | | | | | | - Andreas Walther
- Biological Psychology, TU Dresden, Dresden, Germany.,Clinical Psychology and Psychotherapy, University of Zurich, Zurich, Switzerland
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20
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Tanaka M, Li H, Zhang X, Singh J, Dalgard CL, Wilkerson M, Zhang Y. Region- and time-dependent gene regulation in the amygdala and anterior cingulate cortex of a PTSD-like mouse model. Mol Brain 2019; 12:25. [PMID: 30922409 PMCID: PMC6438009 DOI: 10.1186/s13041-019-0449-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Accepted: 03/15/2019] [Indexed: 01/07/2023] Open
Abstract
Posttraumatic stress disorder is developed by exposure to a threatening and/or a horrifying event and characterized by the presence of anxiety, hyperarousal, avoidance, and sleep abnormality for a prolonged period of time. To elucidate the potential molecular mechanisms, we constructed a mouse model by electric foot shock followed by situational reminders and performed transcriptome analysis in brain tissues. The stressed mice acquired anxiety-like behavior after 2 weeks and exaggerated startle response after 4 weeks. Avoidance latency and freezing behavior were sustained up to 5 weeks post stress and abnormal static behavior was observed during the sleep period. RNA sequencing was performed in two of the emotional regulatory regions, anterior cingulate cortex and amygdala, at 2 and 5 weeks post stress. More than 1000 differentially expressed genes were identified at 2 weeks in both regions. The number of the regulated genes remained constant in amygdala at 5 weeks post stress, whereas those in anterior cingulate cortex were plummeted. Although synaptic remodeling and endocrine system were the most enriched signaling pathways in both anterior cingulate cortex and amygdala, the individual gene expression profile was regulated in a region- and time-dependent manner. In addition, several genes associated with PTSD involved in Hypothalamic-Pituitary-Adrenal axis were differentially regulated. These findings suggested that global gene expression profile was dynamically regulated in accordance with the disease development stage, and therefore targeting the distinct signaling molecules in different region and development stage might be critical for effective treatment to PTSD.
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Affiliation(s)
- Mikiei Tanaka
- Department of Anatomy, Physiology and Genetics, Uniformed Services University of Health Sciences, 4301 Jones Bridge Rd, Bethesda, MD, 20814, USA
| | - Hongyun Li
- Department of Anatomy, Physiology and Genetics, Uniformed Services University of Health Sciences, 4301 Jones Bridge Rd, Bethesda, MD, 20814, USA
| | - Xijun Zhang
- Collaborative Health Initiative Research Program (CHIRP), Uniformed Services University of Health Sciences, 4301 Jones Bridge Rd, Bethesda, MD, 20814, USA
| | - Jatinder Singh
- Collaborative Health Initiative Research Program (CHIRP), Uniformed Services University of Health Sciences, 4301 Jones Bridge Rd, Bethesda, MD, 20814, USA
| | - Clifton L Dalgard
- Department of Anatomy, Physiology and Genetics, Uniformed Services University of Health Sciences, 4301 Jones Bridge Rd, Bethesda, MD, 20814, USA.,Collaborative Health Initiative Research Program (CHIRP), Uniformed Services University of Health Sciences, 4301 Jones Bridge Rd, Bethesda, MD, 20814, USA
| | - Matthew Wilkerson
- Department of Anatomy, Physiology and Genetics, Uniformed Services University of Health Sciences, 4301 Jones Bridge Rd, Bethesda, MD, 20814, USA.,Collaborative Health Initiative Research Program (CHIRP), Uniformed Services University of Health Sciences, 4301 Jones Bridge Rd, Bethesda, MD, 20814, USA
| | - Yumin Zhang
- Department of Anatomy, Physiology and Genetics, Uniformed Services University of Health Sciences, 4301 Jones Bridge Rd, Bethesda, MD, 20814, USA. .,Collaborative Health Initiative Research Program (CHIRP), Uniformed Services University of Health Sciences, 4301 Jones Bridge Rd, Bethesda, MD, 20814, USA.
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21
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Mechanisms of fear learning and extinction: synaptic plasticity-fear memory connection. Psychopharmacology (Berl) 2019; 236:163-182. [PMID: 30415278 PMCID: PMC6374177 DOI: 10.1007/s00213-018-5104-4] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Accepted: 11/02/2018] [Indexed: 12/21/2022]
Abstract
RATIONALE The ability to memorize threat-associated cues and subsequently react to them, exhibiting escape or avoidance responses, is an essential, often life-saving behavioral mechanism that can be experimentally studied using the fear (threat) conditioning training paradigm. Presently, there is substantial evidence supporting the Synaptic Plasticity-Memory (SPM) hypothesis in relation to the mechanisms underlying the acquisition, retention, and extinction of conditioned fear memory. OBJECTIVES The purpose of this review article is to summarize findings supporting the SPM hypothesis in the context of conditioned fear control, applying the set of criteria and tests which were proposed as necessary to causally link lasting changes in synaptic transmission in corresponding neural circuits to fear memory acquisition and extinction with an emphasis on their pharmacological diversity. RESULTS The mechanisms of synaptic plasticity in fear circuits exhibit complex pharmacological profiles and satisfy all four SPM criteria-detectability, anterograde alteration, retrograde alteration, and mimicry. CONCLUSION The reviewed findings, accumulated over the last two decades, provide support for both necessity and sufficiency of synaptic plasticity in fear circuits for fear memory acquisition and retention, and, in part, for fear extinction, with the latter requiring additional experimental work.
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22
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Loss of Adult 5-HT1A Autoreceptors Results in a Paradoxical Anxiogenic Response to Antidepressant Treatment. J Neurosci 2018; 39:1334-1346. [PMID: 30552180 DOI: 10.1523/jneurosci.0352-18.2018] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Revised: 12/06/2018] [Accepted: 12/07/2018] [Indexed: 12/12/2022] Open
Abstract
Selective serotonin (5-HT) reuptake inhibitors (SSRIs) are first-line antidepressants but require several weeks to elicit their actions. Chronic SSRI treatment induces desensitization of 5-HT1A autoreceptors to enhance 5-HT neurotransmission. Mice (both sexes) with gene deletion of 5-HT1A autoreceptors in adult 5-HT neurons (1AcKO) were tested for response to SSRIs. Tamoxifen-induced recombination in adult 1AcKO mice specifically reduced 5-HT1A autoreceptor levels. The 1AcKO mice showed a loss of 5-HT1A autoreceptor-mediated hypothermia and electrophysiological responses, but no changes in anxiety- or depression-like behavior. Subchronic fluoxetine (FLX) treatment induced an unexpected anxiogenic effect in 1AcKO mice in the novelty suppressed feeding and elevated plus maze tests, as did escitalopram in the novelty suppressed feeding test. No effect was seen in wild-type (WT) mice. Subchronic FLX increased 5-HT metabolism in prefrontal cortex, hippocampus, and raphe of 1AcKO but not WT mice, suggesting hyperactivation of 5-HT release. To detect chronic cellular activation, FosB+ cells were quantified. FosB+ cells were reduced in entorhinal cortex and hippocampus (CA2/3) and increased in dorsal raphe 5-HT cells of 1AcKO mice, suggesting increased raphe activation. In WT but not 1AcKO mice, FLX reduced FosB+ cells in the median raphe, hippocampus, entorhinal cortex, and median septum, which receive rich 5-HT projections. Thus, in the absence of 5-HT1A autoreceptors, SSRIs induce a paradoxical anxiogenic response. This may involve imbalance in activation of dorsal and median raphe to regulate septohippocampal or fimbria-fornix pathways. These results suggest that markedly reduced 5-HT1A autoreceptors may provide a marker for aberrant response to SSRI treatment.SIGNIFICANCE STATEMENT Serotonin-selective reuptake inhibitors (SSRIs) are effective in treating anxiety and depression in humans and mouse models. However, in some cases, SSRIs can increase anxiety, but the mechanisms involved are unclear. Here we show that, rather than enhancing SSRI benefits, adulthood knockout (KO) of the 5-HT1A autoreceptor, a critical negative regulator of 5-HT activity, results in an SSRI-induced anxiety effect that appears to involve a hyperactivation of the 5-HT system in certain brain areas. Thus, subjects with very low levels of 5-HT1A autoreceptors, such as during childhood or adolescence, may be at risk for an SSRI-induced anxiety response.
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23
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Gebhardt C, Mosienko V, Alenina N, Albrecht D. Priming of LTP in amygdala and hippocampus by prior paired pulse facilitation paradigm in mice lacking brain serotonin. Hippocampus 2018; 29:610-618. [PMID: 30457189 DOI: 10.1002/hipo.23055] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Revised: 10/08/2018] [Accepted: 11/14/2018] [Indexed: 02/06/2023]
Abstract
This study focuses on analyzing long-term potentiation (LTP) changes in the lateral nucleus of the amygdala (LA) and in the CA1 region of the hippocampus in slices derived from mice deficient in tryptophan hydroxylase 2 (TPH2-/- ), the rate-limiting enzyme for 5-HT synthesis in the brain. We found a reduced LTP in both brain structures in TPH2-/- mice. However, we found no changes in the magnitude of LTP in TPH2-/- mice compared to wildtype mice when it was preceded by a paired pulse protocol. Whereas the magnitude of long-term depression (LTD) did not differ between wildtype and TPH2-/- mice, priming synapses by LTD-induction facilitated subsequent CA1-LTP in wildtype mice to a greater extent than in TPH2-/- mice. In the LA we found no differences between the genotypes in this protocol of metaplasticity. These data show that, unlike exogenous 5-HT application, lack of 5-HT in the brain impairs cellular mechanisms responsible for induction of LTP. It is supposed that suppression of LTP observed in TPH2-/- mice might be compensated by mechanisms of metaplasticity induced by paired pulse stimulation or low frequency stimulation before the induction of LTP.
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Affiliation(s)
- Christine Gebhardt
- Institute of Neurophysiology, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Valentina Mosienko
- Max-Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany
| | - Natalia Alenina
- Max-Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany.,Institute of Translational Biomedicine, St. Petersburg State University, St. Petersburg, Russia
| | - Doris Albrecht
- Institute of Neurophysiology, Charité - Universitätsmedizin Berlin, Berlin, Germany
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24
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Flores Á, Fullana MÀ, Soriano-Mas C, Andero R. Lost in translation: how to upgrade fear memory research. Mol Psychiatry 2018; 23:2122-2132. [PMID: 29298989 DOI: 10.1038/s41380-017-0006-0] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/01/2017] [Revised: 10/30/2017] [Accepted: 11/03/2017] [Indexed: 12/24/2022]
Abstract
We address some of the current limitations of translational research in fear memory and suggest alternatives that might help to overcome them. Appropriate fear responses are adaptive, but disruption of healthy fear memory circuits can lead to anxiety and fear-based disorders. Stress is one of the main environmental factors that can disrupt memory circuits and constitutes as a key factor in the etiopathology of these psychiatric conditions. Current therapies for anxiety and fear-based disorders have limited success rate, revealing a clear need for an improved understanding of their neurobiological basis. Although animal models are excellent for dissecting fear memory circuits and have driven tremendous advances in the field, translation of these findings into the clinic has been limited so far. Animal models of stress-induced pathological fear combined with powerful cutting-edge techniques would help to improve the translational value of preclinical studies. We also encourage combining animal and human research, including psychiatric patients in order to find new pharmacological targets with real therapeutic potential that will improve the extrapolation of the findings. Finally, we highlight novel neuroimaging approaches that improve our understanding of anxiety and fear-based disorders.
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Affiliation(s)
- África Flores
- Institut de Neurociènces, Universitat Autònoma de Barcelona, Bellaterra, Spain
| | - Miquel À Fullana
- FIDMAG Germanes Hospitalàries-CIBERSAM, Sant Boi de Llobregat, Barcelona, Spain.,Department of Psychiatry, Universitat Autònoma de Barcelona, Bellaterra, Spain
| | - Carles Soriano-Mas
- Department of Psychiatry, Bellvitge University Hospital-IDIBELL, Hospitalet de Llobregat, Spain.,CIBERSAM-G17, Barcelona, Spain.,Department of Psychobiology and Methodology in Health Sciences, Universitat Autònoma de Barcelona, Bellaterra, Spain
| | - Raül Andero
- Institut de Neurociènces, Universitat Autònoma de Barcelona, Bellaterra, Spain. .,CIBERSAM, Corporació Sanitaria Parc Taulí, Sabadell, Spain. .,Department of Psychobiology and Methodology in Health Sciences, Universitat Autònoma de Barcelona, Bellaterra, Spain.
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25
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Luchkina NV, Bolshakov VY. Diminishing fear: Optogenetic approach toward understanding neural circuits of fear control. Pharmacol Biochem Behav 2018; 174:64-79. [PMID: 28502746 PMCID: PMC5681900 DOI: 10.1016/j.pbb.2017.05.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2017] [Revised: 04/13/2017] [Accepted: 05/10/2017] [Indexed: 02/05/2023]
Abstract
Understanding complex behavioral processes, both learned and innate, requires detailed characterization of the principles governing signal flow in corresponding neural circuits. Previous studies were hampered by the lack of appropriate tools needed to address the complexities of behavior-driving micro- and macrocircuits. The development and implementation of optogenetic methodologies revolutionized the field of behavioral neuroscience, allowing precise spatiotemporal control of specific, genetically defined neuronal populations and their functional connectivity both in vivo and ex vivo, thus providing unprecedented insights into the cellular and network-level mechanisms contributing to behavior. Here, we review recent pioneering advances in behavioral studies with optogenetic tools, focusing on mechanisms of fear-related behavioral processes with an emphasis on approaches which could be used to suppress fear when it is pathologically expressed. We also discuss limitations of these methodologies as well as review new technological developments which could be used in future mechanistic studies of fear behavior.
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Affiliation(s)
- Natalia V Luchkina
- Department of Psychiatry, McLean Hospital, Harvard Medical School, Belmont, MA 02478, USA.
| | - Vadim Y Bolshakov
- Department of Psychiatry, McLean Hospital, Harvard Medical School, Belmont, MA 02478, USA.
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Viskaitis P, Irvine EE, Smith MA, Choudhury AI, Alvarez-Curto E, Glegola JA, Hardy DG, Pedroni SMA, Paiva Pessoa MR, Fernando ABP, Katsouri L, Sardini A, Ungless MA, Milligan G, Withers DJ. Modulation of SF1 Neuron Activity Coordinately Regulates Both Feeding Behavior and Associated Emotional States. Cell Rep 2018; 21:3559-3572. [PMID: 29262334 PMCID: PMC5746599 DOI: 10.1016/j.celrep.2017.11.089] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Revised: 10/18/2017] [Accepted: 11/27/2017] [Indexed: 12/24/2022] Open
Abstract
Feeding requires the integration of homeostatic drives with emotional states relevant to food procurement in potentially hostile environments. The ventromedial hypothalamus (VMH) regulates feeding and anxiety, but how these are controlled in a concerted manner remains unclear. Using pharmacogenetic, optogenetic, and calcium imaging approaches with a battery of behavioral assays, we demonstrate that VMH steroidogenic factor 1 (SF1) neurons constitute a nutritionally sensitive switch, modulating the competing motivations of feeding and avoidance of potentially dangerous environments. Acute alteration of SF1 neuronal activity alters food intake via changes in appetite and feeding-related behaviors, including locomotion, exploration, anxiety, and valence. In turn, intrinsic SF1 neuron activity is low during feeding and increases with both feeding termination and stress. Our findings identify SF1 neurons as a key part of the neurocircuitry that controls both feeding and related affective states, giving potential insights into the relationship between disordered eating and stress-associated psychological disorders in humans.
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Affiliation(s)
- Paulius Viskaitis
- MRC London Institute of Medical Sciences, Du Cane Road, London W12 0NN, UK; Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, Du Cane Road, London W12 0NN, UK
| | - Elaine E Irvine
- MRC London Institute of Medical Sciences, Du Cane Road, London W12 0NN, UK; Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, Du Cane Road, London W12 0NN, UK
| | - Mark A Smith
- MRC London Institute of Medical Sciences, Du Cane Road, London W12 0NN, UK; Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, Du Cane Road, London W12 0NN, UK
| | - Agharul I Choudhury
- MRC London Institute of Medical Sciences, Du Cane Road, London W12 0NN, UK; Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, Du Cane Road, London W12 0NN, UK
| | - Elisa Alvarez-Curto
- Centre for Translational Pharmacology, Institute of Molecular, Cell and Systems Biology, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow G12 8QQ, UK
| | - Justyna A Glegola
- MRC London Institute of Medical Sciences, Du Cane Road, London W12 0NN, UK; Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, Du Cane Road, London W12 0NN, UK
| | - Darran G Hardy
- MRC London Institute of Medical Sciences, Du Cane Road, London W12 0NN, UK; Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, Du Cane Road, London W12 0NN, UK
| | - Silvia M A Pedroni
- MRC London Institute of Medical Sciences, Du Cane Road, London W12 0NN, UK; Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, Du Cane Road, London W12 0NN, UK
| | - Maria R Paiva Pessoa
- MRC London Institute of Medical Sciences, Du Cane Road, London W12 0NN, UK; Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, Du Cane Road, London W12 0NN, UK
| | - Anushka B P Fernando
- MRC London Institute of Medical Sciences, Du Cane Road, London W12 0NN, UK; Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, Du Cane Road, London W12 0NN, UK
| | - Loukia Katsouri
- MRC London Institute of Medical Sciences, Du Cane Road, London W12 0NN, UK; Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, Du Cane Road, London W12 0NN, UK
| | - Alessandro Sardini
- MRC London Institute of Medical Sciences, Du Cane Road, London W12 0NN, UK; Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, Du Cane Road, London W12 0NN, UK
| | - Mark A Ungless
- MRC London Institute of Medical Sciences, Du Cane Road, London W12 0NN, UK; Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, Du Cane Road, London W12 0NN, UK
| | - Graeme Milligan
- Centre for Translational Pharmacology, Institute of Molecular, Cell and Systems Biology, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow G12 8QQ, UK
| | - Dominic J Withers
- MRC London Institute of Medical Sciences, Du Cane Road, London W12 0NN, UK; Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, Du Cane Road, London W12 0NN, UK.
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Belém-Filho IJA, Ribera PC, Nascimento AL, Gomes ARQ, Lima RR, Crespo-Lopez ME, Monteiro MC, Fontes-Júnior EA, Lima MO, Maia CSF. Low doses of methylmercury intoxication solely or associated to ethanol binge drinking induce psychiatric-like disorders in adolescent female rats. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2018; 60:184-194. [PMID: 29734102 DOI: 10.1016/j.etap.2018.04.021] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Revised: 04/24/2018] [Accepted: 04/27/2018] [Indexed: 06/08/2023]
Abstract
Methylmercury (MeHg) is an environmental contaminant that provokes damage to developing brain. Simultaneously, the consumption of ethanol among adolescents has increased. Evidence concerning the effects of MeHg low doses per se or associated with ethanol during adolescence are scarce. Thus, we investigate behavioral disorders resulted from exposure to MeHg low doses and co-intoxicated with ethanol in adolescent rats. Wistar rats received chronic exposure to low doses of MeHg (40 μg/kg/day for 5 weeks) and/or ethanol binge drinking (3 g/kg/day at 3 days per week for 5 weeks). Animals were submitted to behavioral assays to assess emotionality and cognitive function. Total mercury content was evaluated in the brain and hair. Oxidative parameters were analyzed in blood samples. MeHg at low doses or associated to ethanol binge drinking produced psychiatric-like disorders and cognitive impairment. Peripherally, MeHg altered oxidative parameters when associated to ethanol. Ethanol administration reduced brain mercury deposit. We proposed that ethanol reduces the necessity of mercury tissue levels to display psychiatric-like disorders/cognitive impairment.
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Affiliation(s)
| | - Paula Cardoso Ribera
- Laboratório de Farmacologia da Inflamação e Comportamento, Universidade Federal do Pará, Belém, Pará, Brazil
| | - Aline Lima Nascimento
- Laboratório de Farmacologia da Inflamação e Comportamento, Universidade Federal do Pará, Belém, Pará, Brazil
| | | | - Rafael Rodrigues Lima
- Laboratório de Biologia Funcional e Estrutural, Universidade Federal do Pará, Belém, Pará, Brazil
| | - Maria Elena Crespo-Lopez
- Laboratório de Ensaios In Vitro, Imunologia e Microbiologia, Universidade Federal do Pará, Belém, Pará, Brazil
| | - Marta Chagas Monteiro
- Laboratório de Farmacologia Molecular, Universidade Federal do Pará, Belém, Pará, Brazil
| | - Enéas Andrade Fontes-Júnior
- Laboratório de Farmacologia da Inflamação e Comportamento, Universidade Federal do Pará, Belém, Pará, Brazil
| | - Marcelo Oliveira Lima
- Laboratório de Toxicologia, Seção de Meio Ambiente, Instituto Evandro Chagas, Belém, Pará, Brazil
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Kim H, Beack S, Han S, Shin M, Lee T, Park Y, Kim KS, Yetisen AK, Yun SH, Kwon W, Hahn SK. Multifunctional Photonic Nanomaterials for Diagnostic, Therapeutic, and Theranostic Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30. [PMID: 29363198 DOI: 10.1002/adma.201701460] [Citation(s) in RCA: 90] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Revised: 10/20/2017] [Indexed: 05/08/2023]
Abstract
The last decade has seen dramatic progress in the principle, design, and fabrication of photonic nanomaterials with various optical properties and functionalities. Light-emitting and light-responsive nanomaterials, such as semiconductor quantum dots, plasmonic metal nanoparticles, organic carbon, and polymeric nanomaterials, offer promising approaches to low-cost and effective diagnostic, therapeutic, and theranostic applications. Reasonable endeavors have begun to translate some of the promising photonic nanomaterials to the clinic. Here, current research on the state-of-the-art and emerging photonic nanomaterials for diverse biomedical applications is reviewed, and the remaining challenges and future perspectives are discussed.
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Affiliation(s)
- Hyemin Kim
- PHI BIOMED Co., #613, 12 Gangnam-daero 65-gil, Seocho-gu, Seoul, 06612, South Korea
| | - Songeun Beack
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang, Gyeongbuk, 37673, South Korea
| | - Seulgi Han
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang, Gyeongbuk, 37673, South Korea
| | - Myeonghwan Shin
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang, Gyeongbuk, 37673, South Korea
| | - Taehyung Lee
- Department of Chemical Engineering, POSTECH, 77 Cheongam-ro, Nam-gu, Pohang, Gyeongbuk, 37673, South Korea
| | - Yoonsang Park
- Department of Chemical Engineering, POSTECH, 77 Cheongam-ro, Nam-gu, Pohang, Gyeongbuk, 37673, South Korea
| | - Ki Su Kim
- Wellman Center for Photomedicine, Massachusetts General Hospital, 65 Landsdowne St., UP-5, Cambridge, MA, 02139, USA
| | - Ali K Yetisen
- Wellman Center for Photomedicine, Massachusetts General Hospital, 65 Landsdowne St., UP-5, Cambridge, MA, 02139, USA
| | - Seok Hyun Yun
- Wellman Center for Photomedicine, Massachusetts General Hospital, 65 Landsdowne St., UP-5, Cambridge, MA, 02139, USA
| | - Woosung Kwon
- Department of Chemical and Biological Engineering, Sookmyung Women's University, 100 Cheongpa-ro 47-gil, Seoul, 04310, South Korea
| | - Sei Kwang Hahn
- Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang, Gyeongbuk, 37673, South Korea
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Khan AR, Kroenke CD, Wiborg O, Chuhutin A, Nyengaard JR, Hansen B, Jespersen SN. Differential microstructural alterations in rat cerebral cortex in a model of chronic mild stress depression. PLoS One 2018; 13:e0192329. [PMID: 29432490 PMCID: PMC5809082 DOI: 10.1371/journal.pone.0192329] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Accepted: 01/22/2018] [Indexed: 01/17/2023] Open
Abstract
Chronic mild stress leads to depression in many cases and is linked to several debilitating diseases including mental disorders. Recently, neuronal tracing techniques, stereology, and immunohistochemistry have revealed persistent and significant microstructural alterations in the hippocampus, hypothalamus, prefrontal cortex, and amygdala, which form an interconnected system known as the stress circuit. Most studies have focused only on this circuit, however, some studies indicate that manipulation of sensory and motor systems may impact genesis and therapy of mood disorders and therefore these areas should not be neglected in the study of brain microstructure alterations in response to stress and depression. For this reason, we explore the microstructural alterations in different cortical regions in a chronic mild stress model of depression. The study employs ex-vivo diffusion MRI (d-MRI) to assess cortical microstructure in stressed (anhedonic and resilient) and control animals. MRI is followed by immunohistochemistry to substantiate the d-MRI findings. We find significantly lower extracellular diffusivity in auditory cortex (AC) of stress groups and a significantly higher fractional anisotropy in the resilient group. Neurite density was not found to be significantly higher in any cortical ROIs in the stress group compared to control, although axonal density is higher in the stress groups. We also report significant thinning of motor cortex (MC) in both stress groups. This is in agreement with recent clinical and preclinical studies on depression and similar disorders where significant microstructural and metabolic alterations were found in AC and MC. Our findings provide further evidence that the AC and MC are sensitive towards stress exposure and may extend our understanding of the microstructural effects of stress beyond the stress circuit of the brain. Progress in this field may provide new avenues of research to help in diagnosis and treatment intervention for depression and related disorders.
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Affiliation(s)
- Ahmad Raza Khan
- Center of Functionally Integrative Neuroscience, Aarhus University Hospital, Aarhus, Denmark
| | - Christopher D. Kroenke
- Advanced Imaging Research Center, Oregon Health & Science University, Portland, Oregon, United States of America
| | - Ove Wiborg
- Center of Functionally Integrative Neuroscience, Aarhus University Hospital, Aarhus, Denmark
| | - Andrey Chuhutin
- Center of Functionally Integrative Neuroscience, Aarhus University Hospital, Aarhus, Denmark
| | - Jens R. Nyengaard
- Core Center for Molecular Morphology, Section for Stereology and Microscopy, Centre for Stochastic Geometry and Advanced Bioimaging, Aarhus University, Aarhus, Denmark
| | - Brian Hansen
- Center of Functionally Integrative Neuroscience, Aarhus University Hospital, Aarhus, Denmark
| | - Sune Nørhøj Jespersen
- Center of Functionally Integrative Neuroscience, Aarhus University Hospital, Aarhus, Denmark
- Department of Physics and Astronomy, Aarhus University, Aarhus, Denmark
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30
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Zhang JP, Zhang KY, Guo L, Chen QL, Gao P, Wang T, Li J, Guo GZ, Ding GR. Effects of 1.8 GHz Radiofrequency Fields on the Emotional Behavior and Spatial Memory of Adolescent Mice. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2017; 14:E1344. [PMID: 29113072 PMCID: PMC5707983 DOI: 10.3390/ijerph14111344] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Revised: 10/31/2017] [Accepted: 11/02/2017] [Indexed: 11/16/2022]
Abstract
The increasing use of mobile phones by teenagers has raised concern about the cognitive effects of radiofrequency (RF) fields. In this study, we investigated the effects of 4-week exposure to a 1.8 GHz RF field on the emotional behavior and spatial memory of adolescent male mice. Anxiety-like behavior was evaluated by open field test (OFT) and elevated plus maze (EPM) test, while depression-like behavior was evaluated by sucrose preference test (SPT), tail suspension test (TST) and forced swim test (FST). The spatial learning and memory ability were evaluated by Morris water maze (MWM) experiments. The levels of amino acid neurotransmitters were determined by liquid chromatography-mass spectrometry (LC-MS). The histology of the brain was examined by hematoxylin-eosin (HE) staining. It was found that the depression-like behavior, spatial memory ability and histology of the brain did not change obviously after RF exposure. However, the anxiety-like behavior increased in mice, while, the levels of γ-aminobutyric acid (GABA) and aspartic acid (Asp) in cortex and hippocampus significantly decreased after RF exposure. These data suggested that RF exposure under these conditions do not affect the depression-like behavior, spatial memory and brain histology in adolescent male mice, but it may however increase the level of anxiety, and GABA and Asp were probably involved in this effect.
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Affiliation(s)
- Jun-Ping Zhang
- Department of Radiation Biology, Faculty of Preventive Medicine, Fourth Military Medical University, 169# Chang Le West Road, Xi'an 710032, China.
| | - Ke-Ying Zhang
- Department of Radiation Biology, Faculty of Preventive Medicine, Fourth Military Medical University, 169# Chang Le West Road, Xi'an 710032, China.
| | - Ling Guo
- Department of Radiation Biology, Faculty of Preventive Medicine, Fourth Military Medical University, 169# Chang Le West Road, Xi'an 710032, China.
| | - Qi-Liang Chen
- Department of Radiation Biology, Faculty of Preventive Medicine, Fourth Military Medical University, 169# Chang Le West Road, Xi'an 710032, China.
| | - Peng Gao
- Department of Radiation Medicine, Faculty of Preventive Medicine, Fourth Military Medical University, 169# Chang Le West Road, Xi'an 710032, China.
| | - Tian Wang
- Department of Radiation Biology, Faculty of Preventive Medicine, Fourth Military Medical University, 169# Chang Le West Road, Xi'an 710032, China.
| | - Jing Li
- Department of Radiation Biology, Faculty of Preventive Medicine, Fourth Military Medical University, 169# Chang Le West Road, Xi'an 710032, China.
| | - Guo-Zhen Guo
- Department of Radiation Medicine, Faculty of Preventive Medicine, Fourth Military Medical University, 169# Chang Le West Road, Xi'an 710032, China.
| | - Gui-Rong Ding
- Department of Radiation Biology, Faculty of Preventive Medicine, Fourth Military Medical University, 169# Chang Le West Road, Xi'an 710032, China.
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Goode TD, Maren S. Role of the bed nucleus of the stria terminalis in aversive learning and memory. Learn Mem 2017; 24:480-491. [PMID: 28814474 PMCID: PMC5580527 DOI: 10.1101/lm.044206.116] [Citation(s) in RCA: 85] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2017] [Accepted: 06/30/2017] [Indexed: 02/06/2023]
Abstract
Surviving threats in the environment requires brain circuits for detecting (or anticipating) danger and for coordinating appropriate defensive responses (e.g., increased cardiac output, stress hormone release, and freezing behavior). The bed nucleus of the stria terminalis (BNST) is a critical interface between the "affective forebrain"-including the amygdala, ventral hippocampus, and medial prefrontal cortex-and the hypothalamic and brainstem areas that have been implicated in neuroendocrine, autonomic, and behavioral responses to actual or anticipated threats. However, the precise contribution of the BNST to defensive behavior is unclear, both in terms of the antecedent stimuli that mobilize BNST activity and the consequent defensive reactions. For example, it is well known that the BNST is essential for contextual fear conditioning, but dispensable for fear conditioning to discrete conditioned stimuli (CSs), at least as indexed by freezing behavior. However, recent evidence suggests that there are circumstances in which contextual freezing may persist independent of the BNST. Furthermore, the BNST is involved in the reinstatement (or relapse) of conditioned freezing to extinguished discrete CSs. As such, there are critical gaps in understanding how the BNST contributes to fundamental processes involved in Pavlovian fear conditioning. Here, we attempt to provide an integrative account of BNST function in fear conditioning. We discuss distinctions between unconditioned stress and conditioned fear and the role of BNST circuits in organizing behaviors associated with these states. We propose that the BNST mediates conditioned defensive responses-not based on the modality or duration of the antecedent threat or the duration of the behavioral response to the threat-but rather as consequence the ability of an antecedent stimulus to predict when an aversive outcome will occur (i.e., its temporal predictability). We argue that the BNST is not uniquely mobilized by sustained threats or uniquely involved in organizing sustained fear responses. In contrast, we argue that the BNST is involved in organizing fear responses to stimuli that poorly predict when danger will occur, no matter the duration, modality, or complexity of those stimuli. The concepts discussed in this review are critical to understanding the contribution of the human BNST to fear and anxiety disorders.
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Affiliation(s)
- Travis D Goode
- Institute for Neuroscience and the Department of Psychology, Texas A&M University, College Station, Texas 77843-3474, USA
| | - Stephen Maren
- Institute for Neuroscience and the Department of Psychology, Texas A&M University, College Station, Texas 77843-3474, USA
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Bassetto RM, Wscieklica T, Pouza KCP, Ortolani D, Viana MB, Cespedes IC, Spadari RC. Effects of electroacupuncture on stress and anxiety-related responses in rats. AN ACAD BRAS CIENC 2017; 89:1003-1012. [PMID: 28538815 DOI: 10.1590/0001-3765201720160531] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Accepted: 11/21/2016] [Indexed: 12/20/2022] Open
Abstract
The aim of this work was to investigate if eletroacupuncture at PC6 would modulate the stress-induced anxiety-like behavior and the level of activation of several brain areas. Rats were distributed in groups: control; submitted to immobilization; submitted to immobilization and eletroacupuncture at PC6 or at the tail. Immobilization increased grooming and decreased stretched attend postures and the time spent in the open arms of the ele-vated plus-maze. Eletroacupuncture at PC6 or tail canceled the effect of immobilization on grooming and attenuated the stretched attend posture. Immobilization increased Fos-immunoreactivity in the prefrontal cortex, medial and central amygdala, paraventricular and dorsomedial nuclei of the hypothalamus, lateral hypothalamus, dentate gyrus, CA1, CA2 and CA3 hippocampal areas. The activation of paraventricular, dorsomedial nuclei and prefrontal cortex by immobilization was canceled by electroacupuncture at PC6 and attenuated by electroacupuncture in the tail. The activation of the other areas was canceled by electroacupuncture in PC6 or the tail. It is concluded that immobilization induced anxiety-like behavior that was moderately attenuated by eletroacupuncture with difference between the stimulation in PC6 or the rat tail. Eletroacupuncture showed specificity concerning to the attenuation of the effects of immobilization in the CNS areas related to the stress response, anxiety and cardiovascular system.
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Affiliation(s)
- Ricardo M Bassetto
- Departamento de Biociências, Instituto Saúde e Sociedade, Campus Baixada Santista, Universidade Federal de São Paulo, Rua Silva Jardim, 136, 11015-020 Santos, SP, Brazil
| | - Tatiana Wscieklica
- Departamento de Biociências, Instituto Saúde e Sociedade, Campus Baixada Santista, Universidade Federal de São Paulo, Rua Silva Jardim, 136, 11015-020 Santos, SP, Brazil
| | - Kathlein C P Pouza
- Departamento de Biociências, Instituto Saúde e Sociedade, Campus Baixada Santista, Universidade Federal de São Paulo, Rua Silva Jardim, 136, 11015-020 Santos, SP, Brazil
| | - Daniela Ortolani
- Departamento de Biociências, Instituto Saúde e Sociedade, Campus Baixada Santista, Universidade Federal de São Paulo, Rua Silva Jardim, 136, 11015-020 Santos, SP, Brazil
| | - Milena B Viana
- Departamento de Biociências, Instituto Saúde e Sociedade, Campus Baixada Santista, Universidade Federal de São Paulo, Rua Silva Jardim, 136, 11015-020 Santos, SP, Brazil
| | - Isabel C Cespedes
- Departamento de Biociências, Instituto Saúde e Sociedade, Campus Baixada Santista, Universidade Federal de São Paulo, Rua Silva Jardim, 136, 11015-020 Santos, SP, Brazil
| | - Regina C Spadari
- Departamento de Biociências, Instituto Saúde e Sociedade, Campus Baixada Santista, Universidade Federal de São Paulo, Rua Silva Jardim, 136, 11015-020 Santos, SP, Brazil
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Matsuo S, Matsuda KI, Takanami K, Mori T, Tanaka M, Kawata M, Kitawaki J. Decrease in neuronal spine density in the postpartum period in the amygdala and bed nucleus of the stria terminalis in rat. Neurosci Lett 2017; 641:21-25. [PMID: 28115236 DOI: 10.1016/j.neulet.2017.01.040] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Revised: 12/28/2016] [Accepted: 01/17/2017] [Indexed: 01/21/2023]
Abstract
In pregnancy and the postpartum period, many women have emotional instability and some suffer from depression. The ovarian steroid hormone milieu is markedly changed during these periods, and this hormonal change may be an important cause of peripartum emotional instability. The amygdala is a central region of emotion, and the bed nucleus of the stria terminalis (BNST), which is considered to be the extended amygdala, is also involved in the emotional response. The amygdala and BNST are well characterized as target brain regions for ovarian steroid hormones, and this suggests that the functional response of neurons in these regions to hormonal fluctuation is affected in the peripartum period. In this study, we investigated the neuronal morphology in the central (CeA) and basolateral (BLA) nucleus of the amygdala and BNST on gestational days 15 (G15) (mid-gestation) and 20 (G20) (late gestation) and 4days after delivery (P4) (early postpartum) in rat. Golgi staining showed that the dendritic spine density, and particularly the number of mature mushroom-type spines, in the CeA, BLA and BNST was significantly decreased at P4, compared with G15 and G20 and with virgin females in the estrous phase in the normal estrous cycle (Est). Interestingly, the presence of pups after delivery influenced the spine density in the BNST. The density was significantly decreased with pup presence compared with pup absence at P4, and compared with G15, G20 and Est. These results provide fundamental insights into the neuronal basis underlying emotional instability during pregnancy and postpartum.
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Affiliation(s)
- Seiki Matsuo
- Department of Obstetrics and Gynecology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Ken Ichi Matsuda
- Department of Anatomy and Neurobiology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan.
| | - Keiko Takanami
- Ushimado Marine Institute, Graduate School of Natural Science and Technology, Okayama University, Ushimado, Setouchi, Okayama, Japan
| | - Taisuke Mori
- Department of Obstetrics and Gynecology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Masaki Tanaka
- Department of Anatomy and Neurobiology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | | | - Jo Kitawaki
- Department of Obstetrics and Gynecology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
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35
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Vahid-Ansari F, Lagace DC, Albert PR. Persistent post-stroke depression in mice following unilateral medial prefrontal cortical stroke. Transl Psychiatry 2016; 6:e863. [PMID: 27483381 PMCID: PMC5022078 DOI: 10.1038/tp.2016.124] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2016] [Revised: 04/20/2016] [Accepted: 05/05/2016] [Indexed: 01/10/2023] Open
Abstract
Post-stroke depression (PSD) is a common outcome following stroke that is associated with poor recovery. To develop a preclinical model of PSD, we targeted a key node of the depression-anxiety circuitry by inducing a unilateral ischemic lesion to the medial prefrontal cortex (mPFC) stroke. Microinjection of male C57/BL6 mice with endothelin-1 (ET-1, 1600 pmol) induced a small (1 mm(3)) stroke consistently localized within the left mPFC. Compared with sham control mice, the stroke mice displayed a robust behavioral phenotype in four validated tests of anxiety including the elevated plus maze, light-dark, open-field and novelty-suppressed feeding tests. In addition, the stroke mice displayed depression-like behaviors in both the forced swim and tail suspension test. In contrast, there was no effect on locomotor activity or sensorimotor function in the horizontal ladder, or cylinder and home cage activity tests, indicating a silent stroke due to the absence of motor abnormalities. When re-tested at 6 weeks post stroke, the stroke mice retained both anxiety and depression phenotypes. Surprisingly, at 6 weeks post stroke the lesion site was infiltrated by neurons, suggesting that the ET-1-induced neuronal loss in the mPFC was reversible over time, but was insufficient to promote behavioral recovery. In summary, unilateral ischemic lesion of the mPFC results in a pronounced and persistent anxiety and depression phenotype with no evident sensorimotor deficits. This precise lesion of the depression circuitry provides a reproducible model to study adaptive cellular changes and preclinical efficacy of novel interventions to alleviate PSD symptoms.
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Affiliation(s)
- F Vahid-Ansari
- Ottawa Hospital Research Institute (Neuroscience), University of Ottawa Brain and Mind Research Institute, Ottawa, ON, Canada,Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, ON, Canada
| | - D C Lagace
- Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, ON, Canada,Department of Cellular and Molecular Medicine, University of Ottawa Brain and Mind Research Institute, University of Ottawa, 451 Smyth Road, Ottawa, ON K1H-8M5, Canada E-mail:
| | - P R Albert
- Ottawa Hospital Research Institute (Neuroscience), University of Ottawa Brain and Mind Research Institute, Ottawa, ON, Canada,Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, ON, Canada,Ottawa Hospital Research Institute (Neuroscience), University of Ottawa Brain and Mind Research Institute, 451 Smyth Road, Ottawa, ON K1H-8M5, Canada. E-mail:
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36
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Kao CY, He Z, Zannas AS, Hahn O, Kühne C, Reichel JM, Binder EB, Wotjak CT, Khaitovich P, Turck CW. Fluoxetine treatment prevents the inflammatory response in a mouse model of posttraumatic stress disorder. J Psychiatr Res 2016; 76:74-83. [PMID: 26897419 DOI: 10.1016/j.jpsychires.2016.02.003] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2015] [Revised: 01/29/2016] [Accepted: 02/05/2016] [Indexed: 01/17/2023]
Abstract
Despite intense research efforts the molecular mechanisms affecting stress-vulnerable brain regions in posttraumatic stress disorder (PTSD) remain elusive. In the current study we have applied global transcriptomic profiling to a PTSD mouse model induced by foot shock fear conditioning. We compared the transcriptomes of prelimbic cortex, anterior cingulate cortex (ACC), basolateral amygdala, central nucleus of amygdala, nucleus accumbens (NAc) and CA1 of the dorsal hippocampus between shocked and non-shocked (control) mice, with and without fluoxetine treatment by RNA sequencing. Differentially expressed (DE) genes were identified and clustered for in silico pathway analysis. Findings in relevant brain regions were further validated with immunohistochemistry. DE genes belonging to 11 clusters were identified including increased inflammatory response in ACC in shocked mice. In line with this finding, we noted higher microglial activation in ACC of shocked mice. Chronic fluoxetine treatment initiated in the aftermath of the trauma prevented inflammatory gene expression alterations in ACC and ameliorated PTSD-like symptoms, implying an important role of the immune response in PTSD pathobiology. Our results provide novel insights into molecular mechanisms affected in PTSD and suggest therapeutic applications with anti-inflammatory agents.
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Affiliation(s)
- Chi-Ya Kao
- Max Planck Institute of Psychiatry, Department of Translational Research in Psychiatry, Kraepelinstrasse 2-10, 80804 Munich, Germany; Graduate School of Systemic Neurosciences, Ludwig-Maximilians-University Munich, Grosshadernerstr. 2, 82152 Planegg-Martinsried, Germany
| | - Zhisong He
- CAS-MPG Partner Institute for Computational Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 320 Yue Yang Road Shanghai, People's Republic of China
| | - Anthony S Zannas
- Max Planck Institute of Psychiatry, Department of Translational Research in Psychiatry, Kraepelinstrasse 2-10, 80804 Munich, Germany; Department of Psychiatry and Behavioral Sciences, Duke University Medical Center, 27710 Durham, NC, USA
| | - Oliver Hahn
- CAS-MPG Partner Institute for Computational Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 320 Yue Yang Road Shanghai, People's Republic of China
| | - Claudia Kühne
- Max Planck Institute of Psychiatry, Department of Translational Research in Psychiatry, Kraepelinstrasse 2-10, 80804 Munich, Germany
| | - Judith M Reichel
- Max Planck Institute of Psychiatry, Department of Stress Neurobiology and Neurogenetics, Kraepelinstrasse 2-10, 80804 Munich, Germany
| | - Elisabeth B Binder
- Max Planck Institute of Psychiatry, Department of Translational Research in Psychiatry, Kraepelinstrasse 2-10, 80804 Munich, Germany; Department of Psychiatry and Behavioral Sciences, Emory University Medical School, 30307 Atlanta, GA, USA
| | - Carsten T Wotjak
- Max Planck Institute of Psychiatry, Department of Stress Neurobiology and Neurogenetics, Kraepelinstrasse 2-10, 80804 Munich, Germany
| | - Philipp Khaitovich
- CAS-MPG Partner Institute for Computational Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 320 Yue Yang Road Shanghai, People's Republic of China.
| | - Christoph W Turck
- Max Planck Institute of Psychiatry, Department of Translational Research in Psychiatry, Kraepelinstrasse 2-10, 80804 Munich, Germany.
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Dogbevia GK, Roβmanith M, Sprengel R, Hasan MT. Flexible, AAV-equipped Genetic Modules for Inducible Control of Gene Expression in Mammalian Brain. MOLECULAR THERAPY. NUCLEIC ACIDS 2016; 5:e309. [PMID: 27070301 PMCID: PMC5014524 DOI: 10.1038/mtna.2016.23] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/08/2015] [Accepted: 03/01/2016] [Indexed: 12/17/2022]
Abstract
Controlling gene expression in mammalian brain is of utmost importance to causally link the role of gene function to cell circuit dynamics under normal conditions and disease states. We have developed recombinant adeno-associated viruses equipped with tetracycline-controlled genetic switches for inducible and reversible control of gene expression in a cell type specific and brain subregion selective manner. Here, we characterize a two-virus approach to efficiently and reliably switch gene expression on and off, repetitively, both in vitro and in vivo. Our recombinant adeno-associated virus (rAAV)-Tet approach is highly flexible and it has great potential for application in basic and biomedical neuroscience research and gene therapy.
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Affiliation(s)
- Godwin K Dogbevia
- Department of Neurobiology, Max Planck Institute for Medical Research, Heidelberg, Germany.,Institute of Experimental and Clinical Pharmacology and Toxicology, University of Lübeck, Lübeck, Germany
| | - Martin Roβmanith
- Department of Neurobiology, Max Planck Institute for Medical Research, Heidelberg, Germany
| | - Rolf Sprengel
- Max Planck Research Group at the Institute for Anatomy and Cell Biology, Heidelberg University, Heidelberg, Germany
| | - Mazahir T Hasan
- Department of Neurobiology, Max Planck Institute for Medical Research, Heidelberg, Germany.,Charité-Universitätsmedizin, NeuroCure Cluster of Excellence, Berlin, Germany
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McOmish CE, Pavey G, Gibbons A, Hopper S, Udawela M, Scarr E, Dean B. Lower [3H]LY341495 binding to mGlu2/3 receptors in the anterior cingulate of subjects with major depressive disorder but not bipolar disorder or schizophrenia. J Affect Disord 2016; 190:241-248. [PMID: 26521087 DOI: 10.1016/j.jad.2015.10.004] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Revised: 09/10/2015] [Accepted: 10/02/2015] [Indexed: 01/20/2023]
Abstract
INTRODUCTION The glutamatergic system has recently been implicated in the pathogenesis and treatment of major depressive disorders(MDD) and mGlu2/3 receptors play an important role in regulating glutamatergic tone. We therefore measured cortical levels of mGlu2/3 to determine if they were changed in MDD. METHODS Binding parameters for [(3)H]LY341495 (mGlu2/3 antagonist) were determined to allow optimized in situ binding with autoradiography to be completed using a number of CNS regions. Subsequently, density of [(3)H]LY341495 binding was measured in BA24(anterior cingulate cortex), BA17(visual cortex) and BA46(dorsolateral prefrontal cortex) from subjects with MDD, Bipolar Disorder(BPD), Schizophrenia(SCZ), and controls, as well as rats treated with imipramine (20mg/kg), fluoxetine (10mg/kg), or vehicle. RESULTS mGlu2/3 are widely expressed throughout the brain with high levels observed in cortex. [(3)H]LY341495 binding was significantly lower in BA24 from subjects with MDD (mean ± SEM=141.3 ± 14.65 fmol/ETE) relative to controls (184.9 ± 7.76 fmol/ETE; Cohen's d=1.005, p<0.05). There were no other differences with diagnoses, and chronic antidepressant treatment in rats had minimal effect on binding. LIMITATIONS Using this approach we are unable to determine whether the change represents fluctuations in mGlu2, mGlu3, or both. Moreover, using postmortem tissue we are unable to dissociate the irrevocable confound of suicidality upon binding levels. CONCLUSION We have demonstrated lower [(3)H]LY341495 binding levels in MDD in BA24-a brain region implicated in depression. Moreover we show that the lower levels are unlikely to be the result of antidepressant treatment. These data suggest that levels of either mGlu2 and/or mGlu3 are affected in the aetiology of MDD.
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Affiliation(s)
- Caitlin E McOmish
- The Florey Institute for Neuroscience and Mental Health and the University of Melbourne, Victoria, Australia; Department of Psychiatry, Columbia University, New York, NY, USA.
| | - Geoff Pavey
- The Florey Institute for Neuroscience and Mental Health and the University of Melbourne, Victoria, Australia
| | - Andrew Gibbons
- The Florey Institute for Neuroscience and Mental Health and the University of Melbourne, Victoria, Australia
| | - Shaun Hopper
- The Florey Institute for Neuroscience and Mental Health and the University of Melbourne, Victoria, Australia
| | - Madhara Udawela
- The Florey Institute for Neuroscience and Mental Health and the University of Melbourne, Victoria, Australia
| | - Elizabeth Scarr
- Department of Psychiatry, University of Melbourne, Victoria, Australia
| | - Brian Dean
- The Florey Institute for Neuroscience and Mental Health and the University of Melbourne, Victoria, Australia; Department of Psychiatry, University of Melbourne, Victoria, Australia
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Haim A, Albin-Brooks C, Sherer M, Mills E, Leuner B. The effects of gestational stress and Selective Serotonin reuptake inhibitor antidepressant treatment on structural plasticity in the postpartum brain--A translational model for postpartum depression. Horm Behav 2016; 77:124-31. [PMID: 25997412 PMCID: PMC4651861 DOI: 10.1016/j.yhbeh.2015.05.005] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2015] [Revised: 04/30/2015] [Accepted: 05/11/2015] [Indexed: 12/12/2022]
Abstract
This article is part of a Special Issue "Parental Care". Postpartum depression (PPD) is a common complication following childbirth experienced by one in every five new mothers. Although the neural basis of PPD remains unknown, previous research in rats has shown that gestational stress, a risk factor for PPD, induces depressive-like behavior during the postpartum period. Moreover, the effect of gestational stress on postpartum mood is accompanied by structural modifications within the nucleus accumbens (NAc) and the medial prefrontal cortex (mPFC)-limbic regions that have been linked to PPD. Mothers diagnosed with PPD are often prescribed selective serotonin reuptake inhibitor (SSRI) antidepressant medications and yet little is known about their effects in models of PPD. Thus, here we investigated whether postpartum administration of Citalopram, an SSRI commonly used to treat PPD, would ameliorate the behavioral and morphological consequences of gestational stress. In addition, we examined the effects of gestational stress and postpartum administration of Citalopram on structural plasticity within the basolateral amygdala (BLA) which together with the mPFC and NAc forms a circuit that is sensitive to stress and is involved in mood regulation. Our results show that postpartum rats treated with Citalopram do not exhibit gestational stress-induced depressive-like behavior in the forced swim test. In addition, Citalopram was effective in reversing gestational stress-induced structural alterations in the postpartum NAc shell and mPFC. We also found that gestational stress increased spine density within the postpartum BLA, an effect which was not reversed by Citalopram treatment. Overall, these data highlight the usefulness of gestational stress as a valid and informative translational model for PPD. Furthermore, they suggest that structural alterations in the mPFC-NAc pathway may underlie stress-induced depressive-like behavior during the postpartum period and provide much needed information on how SSRIs may act in the maternal brain to treat PPD.
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Affiliation(s)
- Achikam Haim
- Department of Neuroscience, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA
| | | | - Morgan Sherer
- Department of Psychology, The Ohio State University, Columbus, OH 43210, USA
| | - Emily Mills
- Department of Psychology, The Ohio State University, Columbus, OH 43210, USA
| | - Benedetta Leuner
- Department of Neuroscience, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA; Department of Psychology, The Ohio State University, Columbus, OH 43210, USA; Behavioral Neuroendocrinology Group, The Ohio State University, Columbus, OH 43210, USA.
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40
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Lei Z, Liu B, Wang JH. Reward memory relieves anxiety-related behavior through synaptic strengthening and protein kinase C in dentate gyrus. Hippocampus 2015; 26:502-16. [PMID: 26443682 DOI: 10.1002/hipo.22540] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Revised: 09/12/2015] [Accepted: 10/02/2015] [Indexed: 01/21/2023]
Abstract
Anxiety disorders are presumably associated with negative memory. Psychological therapies are widely used to treat this mental deficit in human beings based on the view that positive memory competes with negative memory and relieves anxiety status. Cellular and molecular processes underlying psychological therapies remain elusive. Therefore, we have investigated its mechanisms based on a mouse model in which food reward at one open-arm of the elevated plus-maze was used for training mice to form reward memory and challenge the open arms. Mice with the reward training showed increased entries and stay time in reward open-arm versus neutral open-arm as well as in open-arms versus closed-arms. Accompanying with reward memory formation and anxiety relief, glutamatergic synaptic transmission in dentate gyrus in vivo and dendritic spines in granule cells became upregulated. This synaptic up-regulation was accompanied by the expression of more protein kinase C (PKC) in the dendritic spines. The inhibition of PKC by chelerythrine impaired the formation of reward memory, the relief of anxiety-related behavior and the up-regulation of glutamate synapses. Our results suggest that reward-induced positive memory relieves mouse anxiety-related behavior by strengthening synaptic efficacy and PKC in the hippocampus, which imply the underlying cellular and molecular processes involved in the beneficial effects of psychological therapies treating anxiety disorders.
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Affiliation(s)
- Zhuofan Lei
- State Key Laboratory, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China.,Qingdao University, Medical College, 38, Dengzhou, Shandong, China
| | - Bei Liu
- State Key Laboratory, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Jin-Hui Wang
- State Key Laboratory, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China
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41
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Sickness: From the focus on cytokines, prostaglandins, and complement factors to the perspectives of neurons. Neurosci Biobehav Rev 2015; 57:30-45. [PMID: 26363665 DOI: 10.1016/j.neubiorev.2015.07.015] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Revised: 07/06/2015] [Accepted: 07/31/2015] [Indexed: 12/29/2022]
Abstract
Systemic inflammation leads to a variety of physiological (e.g. fever) and behavioral (e.g. anorexia, immobility, social withdrawal, depressed mood, disturbed sleep) responses that are collectively known as sickness. While these phenomena have been studied for the past few decades, the neurobiological mechanisms by which sickness occurs remain unclear. In this review, we first revisit how the body senses and responds to infections and injuries by eliciting systemic inflammation. Next, we focus on how peripheral inflammatory molecules such as cytokines, prostaglandins, and activated complement factors communicate with the brain to trigger neuroinflammation and sickness. Since depression also involves inflammation, we further elaborate on the interrelationship between sickness and depression. Finally, we discuss how immune activation can modulate neurons in the brain, and suggest future perspectives to help unravel how changes in neuronal functions relate to sickness responses.
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42
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Chen C, Takahashi T, Nakagawa S, Inoue T, Kusumi I. Reinforcement learning in depression: A review of computational research. Neurosci Biobehav Rev 2015; 55:247-67. [PMID: 25979140 DOI: 10.1016/j.neubiorev.2015.05.005] [Citation(s) in RCA: 116] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2014] [Revised: 04/20/2015] [Accepted: 05/04/2015] [Indexed: 01/05/2023]
Abstract
Despite being considered primarily a mood disorder, major depressive disorder (MDD) is characterized by cognitive and decision making deficits. Recent research has employed computational models of reinforcement learning (RL) to address these deficits. The computational approach has the advantage in making explicit predictions about learning and behavior, specifying the process parameters of RL, differentiating between model-free and model-based RL, and the computational model-based functional magnetic resonance imaging and electroencephalography. With these merits there has been an emerging field of computational psychiatry and here we review specific studies that focused on MDD. Considerable evidence suggests that MDD is associated with impaired brain signals of reward prediction error and expected value ('wanting'), decreased reward sensitivity ('liking') and/or learning (be it model-free or model-based), etc., although the causality remains unclear. These parameters may serve as valuable intermediate phenotypes of MDD, linking general clinical symptoms to underlying molecular dysfunctions. We believe future computational research at clinical, systems, and cellular/molecular/genetic levels will propel us toward a better understanding of the disease.
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Affiliation(s)
- Chong Chen
- Department of Psychiatry, Hokkaido University Graduate School of Medicine, Sapporo 060-8638, Japan.
| | - Taiki Takahashi
- Department of Behavioral Science/Center for Experimental Research in Social Sciences, Hokkaido University, Sapporo 060-0810, Japan
| | - Shin Nakagawa
- Department of Psychiatry, Hokkaido University Graduate School of Medicine, Sapporo 060-8638, Japan
| | - Takeshi Inoue
- Department of Psychiatry, Hokkaido University Graduate School of Medicine, Sapporo 060-8638, Japan
| | - Ichiro Kusumi
- Department of Psychiatry, Hokkaido University Graduate School of Medicine, Sapporo 060-8638, Japan
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Réus GZ, Carlessi AS, Titus SE, Abelaira HM, Ignácio ZM, da Luz JR, Matias BI, Bruchchen L, Florentino D, Vieira A, Petronilho F, Quevedo J. A single dose of S-ketamine induces long-term antidepressant effects and decreases oxidative stress in adulthood rats following maternal deprivation. Dev Neurobiol 2015; 75:1268-81. [DOI: 10.1002/dneu.22283] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Revised: 02/09/2015] [Accepted: 02/25/2015] [Indexed: 01/23/2023]
Affiliation(s)
- Gislaine Z. Réus
- Laboratório de Neurociências, Programa de Pós-Graduação em Ciências da Saúde, Unidade Acadêmica de Ciências da Saúde, Universidade do Extremo Sul Catarinense; Criciúma SC Brazil
- Department of Psychiatry and Behavioral Sciences; Center for Experimental Models in Psychiatry; Medical School, The University of Texas Health Science Center at Houston; Houston Texas
| | - Anelise S. Carlessi
- Laboratório de Neurociências, Programa de Pós-Graduação em Ciências da Saúde, Unidade Acadêmica de Ciências da Saúde, Universidade do Extremo Sul Catarinense; Criciúma SC Brazil
| | - Stephanie E. Titus
- Department of Psychiatry and Behavioral Sciences; Center for Experimental Models in Psychiatry; Medical School, The University of Texas Health Science Center at Houston; Houston Texas
| | - Helena M. Abelaira
- Laboratório de Neurociências, Programa de Pós-Graduação em Ciências da Saúde, Unidade Acadêmica de Ciências da Saúde, Universidade do Extremo Sul Catarinense; Criciúma SC Brazil
| | - Zuleide M. Ignácio
- Laboratório de Neurociências, Programa de Pós-Graduação em Ciências da Saúde, Unidade Acadêmica de Ciências da Saúde, Universidade do Extremo Sul Catarinense; Criciúma SC Brazil
| | - Jaine R. da Luz
- Laboratório de Neurociências, Programa de Pós-Graduação em Ciências da Saúde, Unidade Acadêmica de Ciências da Saúde, Universidade do Extremo Sul Catarinense; Criciúma SC Brazil
| | - Beatriz I. Matias
- Laboratório de Neurociências, Programa de Pós-Graduação em Ciências da Saúde, Unidade Acadêmica de Ciências da Saúde, Universidade do Extremo Sul Catarinense; Criciúma SC Brazil
| | - Livia Bruchchen
- Laboratório de Neurociências, Programa de Pós-Graduação em Ciências da Saúde, Unidade Acadêmica de Ciências da Saúde, Universidade do Extremo Sul Catarinense; Criciúma SC Brazil
| | - Drielly Florentino
- Laboratório de Fisiopatologia Clínica e Experimental, Programa de Pós-graduação em Ciências da Saúde, Universidade do Sul de Santa Catarina; Tubarão SC Brazil
| | - Andriele Vieira
- Laboratório de Fisiopatologia Clínica e Experimental, Programa de Pós-graduação em Ciências da Saúde, Universidade do Sul de Santa Catarina; Tubarão SC Brazil
| | - Fabricia Petronilho
- Department of Psychiatry and Behavioral Sciences; Center for Experimental Models in Psychiatry; Medical School, The University of Texas Health Science Center at Houston; Houston Texas
- Laboratório de Fisiopatologia Clínica e Experimental, Programa de Pós-graduação em Ciências da Saúde, Universidade do Sul de Santa Catarina; Tubarão SC Brazil
| | - João Quevedo
- Laboratório de Neurociências, Programa de Pós-Graduação em Ciências da Saúde, Unidade Acadêmica de Ciências da Saúde, Universidade do Extremo Sul Catarinense; Criciúma SC Brazil
- Department of Psychiatry and Behavioral Sciences; Center for Experimental Models in Psychiatry; Medical School, The University of Texas Health Science Center at Houston; Houston Texas
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Muhie S, Gautam A, Meyerhoff J, Chakraborty N, Hammamieh R, Jett M. Brain transcriptome profiles in mouse model simulating features of post-traumatic stress disorder. Mol Brain 2015; 8:14. [PMID: 25888136 PMCID: PMC4359441 DOI: 10.1186/s13041-015-0104-3] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Accepted: 02/13/2015] [Indexed: 12/12/2022] Open
Abstract
Background Social-stress mouse model, based on the resident-intruder paradigm was used to simulate features of human post-traumatic stress disorder (PTSD). The model involved exposure of an intruder (subject) mouse to a resident aggressor mouse followed by exposure to trauma reminders with rest periods. C57BL/6 mice exposed to SJL aggressor mice exhibited behaviors suggested as PTSD-in-mouse phenotypes: intermittent freezing, reduced locomotion, avoidance of the aggressor-associated cue and apparent startled jumping. Brain tissues (amygdala, hippocampus, medial prefrontal cortex, septal region, corpus striatum and ventral striatum) from subject (aggressor exposed: Agg-E) and control C57BL/6 mice were collected at one, 10 and 42 days post aggressor exposure sessions. Transcripts in these brain regions were assayed using Agilent’s mouse genome-wide arrays. Results Pathways and biological processes associated with differentially regulated genes were mainly those thought to be involved in fear-related behavioral responses and neuronal signaling. Expression-based assessments of activation patterns showed increased activations of pathways related to anxiety disorders (hyperactivity and fear responses), impaired cognition, mood disorders, circadian rhythm disruption, and impaired territorial and aggressive behaviors. In amygdala, activations of these pathways were more pronounced at earlier time-points, with some attenuation after longer rest periods. In hippocampus and medial prefrontal cortex, activation patterns were observed at later time points. Signaling pathways associated with PTSD-comorbid conditions, such as diabetes, metabolic disorder, inflammation and cardiac infarction, were also significantly enriched. In contrast, signaling processes related to neurogenesis and synaptic plasticity were inhibited. Conclusions Our data suggests activations of behavioral responses associated with anxiety disorders as well as inhibition of neuronal signaling pathways important for neurogenesis, cognition and extinction of fear memory. These pathways along with comorbid-related signaling pathways indicate the pervasive and multisystem effects of aggressor exposure in mice, potentially mirroring the pathologic conditions of PTSD patients. Electronic supplementary material The online version of this article (doi:10.1186/s13041-015-0104-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Seid Muhie
- Advanced Biomedical Computing Center, Frederick National Lab for Cancer Research, Fort Detrick, MD, 21702, USA. .,Integrative Systems Biology Program, U.S. Army Center for Environmental Health Research, 568 Doughten Drive, Fort Detrick, MD, 21702-5010, USA.
| | - Aarti Gautam
- Integrative Systems Biology Program, U.S. Army Center for Environmental Health Research, 568 Doughten Drive, Fort Detrick, MD, 21702-5010, USA.
| | - James Meyerhoff
- Integrative Systems Biology Program, U.S. Army Center for Environmental Health Research, 568 Doughten Drive, Fort Detrick, MD, 21702-5010, USA.
| | - Nabarun Chakraborty
- Integrative Systems Biology Program, U.S. Army Center for Environmental Health Research, 568 Doughten Drive, Fort Detrick, MD, 21702-5010, USA.
| | - Rasha Hammamieh
- Integrative Systems Biology Program, U.S. Army Center for Environmental Health Research, 568 Doughten Drive, Fort Detrick, MD, 21702-5010, USA.
| | - Marti Jett
- Integrative Systems Biology Program, U.S. Army Center for Environmental Health Research, 568 Doughten Drive, Fort Detrick, MD, 21702-5010, USA.
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45
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Gomoll BP, Kumar A. Managing anxiety associated with neurodegenerative disorders. F1000PRIME REPORTS 2015; 7:05. [PMID: 25705388 PMCID: PMC4311274 DOI: 10.12703/p7-05] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Anxiety is a common symptom among patients with cognitive impairment. The presence of anxiety is correlated with poorer outcomes; despite this, there is limited research on anxiety related to neurodegenerative disorder. In this article, we discuss the prevalence of anxiety and factors involved in the etiology of anxiety in patients with diagnosed neurodegenerative disorders and related states of cognitive impairment as well as the evidence for currently available methods of evaluating and treating these symptoms. Specific treatments are highlighted in light of current evidence, followed by a discussion of the difficulties inherent in the study and treatment of anxiety in this population.
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46
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Riga D, Matos MR, Glas A, Smit AB, Spijker S, Van den Oever MC. Optogenetic dissection of medial prefrontal cortex circuitry. Front Syst Neurosci 2014; 8:230. [PMID: 25538574 PMCID: PMC4260491 DOI: 10.3389/fnsys.2014.00230] [Citation(s) in RCA: 157] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2014] [Accepted: 11/18/2014] [Indexed: 12/22/2022] Open
Abstract
The medial prefrontal cortex (mPFC) is critically involved in numerous cognitive functions, including attention, inhibitory control, habit formation, working memory and long-term memory. Moreover, through its dense interconnectivity with subcortical regions (e.g., thalamus, striatum, amygdala and hippocampus), the mPFC is thought to exert top-down executive control over the processing of aversive and appetitive stimuli. Because the mPFC has been implicated in the processing of a wide range of cognitive and emotional stimuli, it is thought to function as a central hub in the brain circuitry mediating symptoms of psychiatric disorders. New optogenetics technology enables anatomical and functional dissection of mPFC circuitry with unprecedented spatial and temporal resolution. This provides important novel insights in the contribution of specific neuronal subpopulations and their connectivity to mPFC function in health and disease states. In this review, we present the current knowledge obtained with optogenetic methods concerning mPFC function and dysfunction and integrate this with findings from traditional intervention approaches used to investigate the mPFC circuitry in animal models of cognitive processing and psychiatric disorders.
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Affiliation(s)
- Danai Riga
- Department of Molecular and Cellular Neurobiology, Center for Neurogenomics and Cognitive Research, Neuroscience Campus Amsterdam, Vrije University Amsterdam Amsterdam, Netherlands
| | - Mariana R Matos
- Department of Molecular and Cellular Neurobiology, Center for Neurogenomics and Cognitive Research, Neuroscience Campus Amsterdam, Vrije University Amsterdam Amsterdam, Netherlands
| | - Annet Glas
- Department of Molecular and Cellular Neurobiology, Center for Neurogenomics and Cognitive Research, Neuroscience Campus Amsterdam, Vrije University Amsterdam Amsterdam, Netherlands
| | - August B Smit
- Department of Molecular and Cellular Neurobiology, Center for Neurogenomics and Cognitive Research, Neuroscience Campus Amsterdam, Vrije University Amsterdam Amsterdam, Netherlands
| | - Sabine Spijker
- Department of Molecular and Cellular Neurobiology, Center for Neurogenomics and Cognitive Research, Neuroscience Campus Amsterdam, Vrije University Amsterdam Amsterdam, Netherlands
| | - Michel C Van den Oever
- Department of Molecular and Cellular Neurobiology, Center for Neurogenomics and Cognitive Research, Neuroscience Campus Amsterdam, Vrije University Amsterdam Amsterdam, Netherlands
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