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Yost RT, Scott AM, Kurbaj JM, Walshe-Roussel B, Dukas R, Simon AF. Recovery from social isolation requires dopamine in males, but not the autism-related gene nlg3 in either sex. ROYAL SOCIETY OPEN SCIENCE 2024; 11:240604. [PMID: 39086833 PMCID: PMC11288677 DOI: 10.1098/rsos.240604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 05/31/2024] [Accepted: 05/31/2024] [Indexed: 08/02/2024]
Abstract
Social isolation causes profound changes in social behaviour in a variety of species. However, the genetic and molecular mechanisms modulating behavioural responses to social isolation and social recovery remain to be elucidated. Here, we quantified the behavioural response of vinegar flies to social isolation using two distinct protocols (social space preference and sociability, the spontaneous tendencies to form groups). We found that social isolation increased social space and reduced sociability. These effects of social isolation were reversible and could be reduced after 3 days of group housing. Flies with a loss of function of neuroligin3 (orthologue of autism-related neuroligin genes) with known increased social space in a socially enriched environment were still able to recover from social isolation. We also show that dopamine (DA) is needed for a response to social isolation and recovery in males but not in females. Furthermore, only in males, DA levels are reduced after isolation and are not recovered after group housing. Finally, in socially enriched flies mutant for neuroligin3, DA levels are reduced in males, but not in females. We propose a model to explain how DA and neuroligin3 are involved in the behavioural response to social isolation and its recovery in a dynamic and sex-specific manner.
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Affiliation(s)
- Ryley T. Yost
- Department of Biology, Western University, London, Ontario, Canada
| | | | - Judy M. Kurbaj
- Department of Biology, Western University, London, Ontario, Canada
| | | | - Reuven Dukas
- Department of Psychology, Neuroscience and Behaviour, Animal Behaviour Group, McMaster University, Hamilton, Ontario, Canada
| | - Anne F. Simon
- Department of Biology, Western University, London, Ontario, Canada
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2
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Magalhães DM, Mampay M, Sebastião AM, Sheridan GK, Valente CA. Age-related impact of social isolation in mice: Young vs middle-aged. Neurochem Int 2024; 174:105678. [PMID: 38266657 DOI: 10.1016/j.neuint.2024.105678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 01/14/2024] [Accepted: 01/14/2024] [Indexed: 01/26/2024]
Abstract
Social isolation is a chronic mild stressor and a significant risk factor for mental health disorders. Herein we explored the impact of social isolation on depression- and anxiety-like behaviours, as well as spatial memory impairments, in middle-aged male mice compared to post-weaning mice. We aimed to quantify and correlate social isolation-induced behaviour discrepancies with changes in hippocampal glial cell reactivity and pro-inflammatory cytokine levels. Post-weaning and middle-aged C57BL7/J6 male mice were socially isolated for a 3-week period and behavioural tests were performed on the last five days of isolation. We found that 3 weeks of social isolation led to depressive-like behaviour in the forced swim test, anxiety-like behaviour in the open field test, and spatial memory impairment in the Morris water maze paradigm in middle-aged male mice. These behavioural alterations were not observed in male mice after post-weaning social isolation, indicating resilience to isolation-mediated stress. Increased Iba-1 expression and NLRP3 priming were both observed in the hippocampus of socially isolated middle-aged mice, suggesting a role for microglia and NLRP3 pathway in the detrimental effects of social isolation on cognition and behaviour. Young socially isolated mice also demonstrated elevated NLRP3 priming compared to controls, but no differences in Iba-1 levels and no significant changes in behaviour. Ageing-induced microglia activation and enhancement of IL-1β, TNF-α and IL-6 proinflammatory cytokines, known signs of a chronic low-grade inflammatory state, were also detected. Altogether, data suggest that social isolation, in addition to inflammaging, contributes to stress-related cognitive impairment in middle-aged mice.
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Affiliation(s)
- Daniela M Magalhães
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal; Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal; School of Applied Sciences, University of Brighton, Brighton, UK
| | - Myrthe Mampay
- School of Applied Sciences, University of Brighton, Brighton, UK
| | - Ana M Sebastião
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal; Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
| | | | - Cláudia A Valente
- Instituto de Farmacologia e Neurociências, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal; Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal.
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3
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Demos-Davies K, Lawrence J, Ferreira C, Seelig D. The Distant Molecular Effects on the Brain by Cancer Treatment. Brain Sci 2023; 14:22. [PMID: 38248237 PMCID: PMC10813787 DOI: 10.3390/brainsci14010022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 12/16/2023] [Accepted: 12/22/2023] [Indexed: 01/23/2024] Open
Abstract
Cancer survivors experience cancer-related cognitive impairment (CRCI) secondary to treatment. Chemotherapy and radiation therapy independently contribute to cognitive dysfunction; however, the underlying mechanisms leading to dysfunction remain unclear. We characterized brain gene expression changes in a mouse model of CRCI to identify the mechanistic underpinnings. Eleven-to-twelve-week-old SKH1 mice were treated with doxorubicin (DOX), hindlimb radiation (RT), concurrent hindlimb radiation and doxorubicin (DOX-RT), or no treatment (control). Sixteen days following treatment, gene expression was measured from murine brains using the NanoString nCounter® glial profiling panel. Gene expression was normalized and compared between groups. No two groups shared the same expression pattern, and only Gnb1 and Srpr were upregulated in multiple treatment groups. Brains from DOX-treated mice had upregulated Atf2, Atp5b, Gnb1, Rad23b, and Srpr and downregulated Sirt5 expression compared to control brains. Brains from RT-treated mice demonstrated increased Abcg2 and Fgf2 and decreased C1qa and C1qb expression compared to control brains. Brains from DOX-RT-treated mice had upregulated Adar, E2f3, Erlec1, Gnb1, Srpr, Vim, and Pdgfra expression and downregulated Rock2 and Inpp5f expression compared to control brains. The gene expression changes demonstrated here highlight roles for neuronal transmission and oxidative stress in the pathogenesis of doxorubicin-related CRCI and inflammation in RT-related CRCI.
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Affiliation(s)
- Kimberly Demos-Davies
- Department of Veterinary Clinical Sciences, University of Minnesota College of Veterinary Medicine, Saint Paul, MN 55108, USA; (J.L.); (D.S.)
| | - Jessica Lawrence
- Department of Veterinary Clinical Sciences, University of Minnesota College of Veterinary Medicine, Saint Paul, MN 55108, USA; (J.L.); (D.S.)
- Masonic Cancer Center, University of Minnesota, Minneapolis, MN 55455,USA
| | - Clara Ferreira
- Department of Radiation Oncology, University of Minnesota Medical School, Minneapolis, MN 55455, USA;
| | - Davis Seelig
- Department of Veterinary Clinical Sciences, University of Minnesota College of Veterinary Medicine, Saint Paul, MN 55108, USA; (J.L.); (D.S.)
- Masonic Cancer Center, University of Minnesota, Minneapolis, MN 55455,USA
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4
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Asraf K, Zaidan H, Natoor B, Gaisler-Salomon I. Synergistic, long-term effects of glutamate dehydrogenase 1 deficiency and mild stress on cognitive function and mPFC gene and miRNA expression. Transl Psychiatry 2023; 13:248. [PMID: 37419882 DOI: 10.1038/s41398-023-02534-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/11/2022] [Revised: 06/15/2023] [Accepted: 06/21/2023] [Indexed: 07/09/2023] Open
Abstract
Glutamate abnormalities in the medial prefrontal cortex (mPFC) are associated with cognitive deficits. We previously showed that homozygous deletion of CNS glutamate dehydrogenase 1 (Glud1), a metabolic enzyme critical for glutamate metabolism, leads to schizophrenia-like behavioral abnormalities and increased mPFC glutamate; mice heterozygous for CNS Glud1 deletion (C-Glud1+/- mice) showed no cognitive or molecular abnormalities. Here, we examined the protracted behavioral and molecular effects of mild injection stress on C-Glud1+/- mice. We found spatial and reversal learning deficits, as well as large-scale mPFC transcriptional changes in pathways associated with glutamate and GABA signaling, in stress-exposed C-Glud1+/- mice, but not in their stress-naïve or C-Glud1+/+ littermates. These effects were observed several weeks following stress exposure, and the expression levels of specific glutamatergic and GABAergic genes differentiated between high and low reversal learning performance. An increase in miR203-5p expression immediately following stress may provide a translational regulatory mechanism to account for the delayed effect of stress exposure on cognitive function. Our findings show that chronic glutamate abnormalities interact with acute stress to induce cognitive deficits, and resonate with gene x environment theories of schizophrenia. Stress-exposed C-Glud1+/- mice may model a schizophrenia high-risk population, which is uniquely sensitive to stress-related 'trigger' events.
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Affiliation(s)
- Kfir Asraf
- School of Psychological Sciences, Department of Psychology, University of Haifa, Haifa, 3498838, Israel
- The Integrated Brain and Behavior Research Center (IBBRC), University of Haifa, Haifa, 3498838, Israel
| | - Hiba Zaidan
- School of Psychological Sciences, Department of Psychology, University of Haifa, Haifa, 3498838, Israel
- The Integrated Brain and Behavior Research Center (IBBRC), University of Haifa, Haifa, 3498838, Israel
| | - Baylasan Natoor
- School of Psychological Sciences, Department of Psychology, University of Haifa, Haifa, 3498838, Israel
- The Integrated Brain and Behavior Research Center (IBBRC), University of Haifa, Haifa, 3498838, Israel
| | - Inna Gaisler-Salomon
- School of Psychological Sciences, Department of Psychology, University of Haifa, Haifa, 3498838, Israel.
- The Integrated Brain and Behavior Research Center (IBBRC), University of Haifa, Haifa, 3498838, Israel.
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Wang Y, Liu Y, Zhao Z, Wu X, Lin J, Li Y, Yan W, Wu Y, Shi Y, Wu X, Xue Y, He J, Liu S, Zhang X, Xu H, Tang Y, Yin S. The involvement of ADAR1 in chronic unpredictable stress-induced cognitive impairment by targeting DARPP-32 with miR-874-3p in BALB/c mice. Front Cell Dev Biol 2023; 11:919297. [PMID: 37123418 PMCID: PMC10132208 DOI: 10.3389/fcell.2023.919297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 03/07/2023] [Indexed: 05/02/2023] Open
Abstract
Introduction: Chronic stress exposure is the main environmental factor leading to cognitive impairment, but the detailed molecular mechanism is still unclear. Adenosine Deaminase acting on double-stranded RNA1(ADAR1) is involved in the occurrence of chronic stress-induced cognitive impairment. In addition, dopamine and Adenosine 3'5'-monophosphate-regulated phospho-protein (DARPP-32) gene variation affects cognitive function. Therefore, we hypothesized that ADAR1 plays a key role in chronic stress-induced cognitive impairment by acting on DARPP-32. Methods: In this study, postnatal 21-day-old male BALB/c mice were exposed to chronic unpredictable stressors. After that, the mice were treated with ADAR1 inducer/inhibitor. The cognitive ability and cerebral DARPP-32 protein expression of BALB/c mice were evaluated. In order to explore the link between ADAR1 and DARPP-32, the effects of ADAR1 high/low expression on DARPP-32 protein expression in vitro were detected. Results: ADAR1 inducer alleviates cognitive impairment and recovers decreased DARPP-32 protein expression of the hippocampus and prefrontal cortex in BALB/c mice with chronic unpredictable stress exposure. In vivo and in vitro studies confirm the results predicted by bio-informatics; that is, ADAR1 affects DARPP-32 expression via miR-874-3p. Discussion: The results in this study demonstrate that ADAR1 affects the expression of DARPP-32 via miR-874-3p, which is involved in the molecular mechanism of pathogenesis in chronic unpredictable stress-induced cognitive impairment. The new findings of this study provide a new therapeutic strategy for the prevention and treatment of stress cognitive impairment from epigenetics.
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Affiliation(s)
- Yanfang Wang
- College of Basic Medical Sciences, Dalian Medical University, Dalian, China
| | - Yingxin Liu
- College of Basic Medical Sciences, Dalian Medical University, Dalian, China
| | - Ziwei Zhao
- College of Basic Medical Sciences, Dalian Medical University, Dalian, China
| | - Xinyu Wu
- College of Basic Medical Sciences, Dalian Medical University, Dalian, China
| | - Jiabin Lin
- College of Basic Medical Sciences, Dalian Medical University, Dalian, China
| | - Yufei Li
- National and Local Joint Engineering Research Center for Drug Research and Development of Neurodegenerative Diseases, Dalian, China
| | - Wei Yan
- College of Basic Medical Sciences, Dalian Medical University, Dalian, China
| | - Yi Wu
- College of Basic Medical Sciences, Dalian Medical University, Dalian, China
| | - Yanfei Shi
- College of Basic Medical Sciences, Dalian Medical University, Dalian, China
| | - Xindi Wu
- College of Basic Medical Sciences, Dalian Medical University, Dalian, China
| | - Ying Xue
- College of Basic Medical Sciences, Dalian Medical University, Dalian, China
| | - Jiaqian He
- College of Basic Medical Sciences, Dalian Medical University, Dalian, China
| | - Shuqi Liu
- College of Basic Medical Sciences, Dalian Medical University, Dalian, China
| | - Xiaonan Zhang
- College of Basic Medical Sciences, Dalian Medical University, Dalian, China
| | - Hong Xu
- College of Basic Medical Sciences, Dalian Medical University, Dalian, China
| | - Yiyuan Tang
- College of Health Solutions, Phoenix, AZ, United States
| | - Shengming Yin
- College of Basic Medical Sciences, Dalian Medical University, Dalian, China
- *Correspondence: Shengming Yin,
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Lee S, Ryu H, Yi Y, Jang SA, Gye H, Choi A, Cho H, Lee BK, Choe JC. The effects of visitors and social isolation from a peer on the behavior of a mixed-species pair of captive gibbons. Sci Rep 2022; 12:19706. [PMID: 36385625 PMCID: PMC9668933 DOI: 10.1038/s41598-022-23196-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Accepted: 10/26/2022] [Indexed: 11/17/2022] Open
Abstract
Human visitors affect the behavior of captive animals, which is the so-called visitor effect. The number and behavior of visitors may influence stress-related behaviors in captive animals, such as self-scratching, yawning, and visitor-directed vigilance. A social group setting can be applied to alleviate such negative visitor effects and facilitate social behavior and interactions between individuals. In this study, we examined how the number and behavior of visitors are related to stress-related behaviors of a captive mixed-species gibbon pair comprising a yellow-cheek gibbon (Nomascus gabriellae) and a white-handed gibbon (Hylobates lar). The two gibbons were separated during the study period, and we examined whether the social isolation stimulated the visitor effect. The frequency of stress-related behaviors of the gibbons increased and the social playing between them decreased proportionally to visitor number. In the indoor enclosure, the gibbons increased their visitor-directed vigilance when visitors shouted or struck the glass partition. Our findings indicate that the number and behavior of visitors negatively affect captive gibbons and that a mixed-species social setting can help gibbons reduce visitor-induced stress. Future studies with larger sample sizes will improve the understanding of the visitor effect and the social setting in the captivity.
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Affiliation(s)
- Saein Lee
- grid.255649.90000 0001 2171 7754Laboratory of Behaviour and Ecology, Interdisciplinary Program of EcoCreative, Ewha Womans University, Seoul, 03760 Republic of Korea
| | - Heungjin Ryu
- grid.42687.3f0000 0004 0381 814XSchool of Life Sciences, Ulsan National Institute of Science and Technology, Ulsan, Republic of Korea ,grid.496435.9Department of Basic Research, National Institute of Ecology, Seocheon-Gun, Republic of Korea
| | - Yoonjung Yi
- grid.410625.40000 0001 2293 4910Laboratory of Animal Behaviour and Conservation, College of Biology and the Environment, Nanjing Forestry University, Nanjing, 210037 Jiangsu China ,grid.255649.90000 0001 2171 7754Division of EcoScience, Ewha Womans University, Seoul, 03760 Republic of Korea
| | - Seon-a Jang
- grid.262229.f0000 0001 0719 8572Department of Biological Sciences, Pusan National University, Busan, Republic of Korea
| | - Haeun Gye
- grid.496435.9Department of Zoological Management, National Institute of Ecology, Seocheon-Gun, Republic of Korea
| | - Ahyun Choi
- grid.255649.90000 0001 2171 7754Laboratory of Behaviour and Ecology, Interdisciplinary Program of EcoCreative, Ewha Womans University, Seoul, 03760 Republic of Korea
| | - Haeun Cho
- grid.255649.90000 0001 2171 7754Laboratory of Behaviour and Ecology, Interdisciplinary Program of EcoCreative, Ewha Womans University, Seoul, 03760 Republic of Korea
| | - Bae-keun Lee
- grid.496435.9Administration Bureau, Division of Social Responsibility Support, National Institute of Ecology, Seocheon-Gun, Republic of Korea
| | - Jae C. Choe
- grid.255649.90000 0001 2171 7754Division of EcoScience, Ewha Womans University, Seoul, 03760 Republic of Korea
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7
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Wu X, Ding Z, Fan T, Wang K, Li S, Zhao J, Zhu W. Childhood social isolation causes anxiety-like behaviors via the damage of blood-brain barrier in amygdala in female mice. Front Cell Dev Biol 2022; 10:943067. [PMID: 36051441 PMCID: PMC9424755 DOI: 10.3389/fcell.2022.943067] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Accepted: 07/05/2022] [Indexed: 12/04/2022] Open
Abstract
Social interaction plays an essential role in species survival for socialized animals. Previous studies have shown that a lack of social interaction such as social isolation, especially in the early-life phase, increases the risk of developing mental diseases in adulthood. Chronic social stress alters blood-brain barrier (BBB) integrity and increases peripheral cytokines to infiltrate the brain, which is linked to the development of depressive-like behaviors in mice, suggesting that BBB function is crucial in environmental stimuli-driven mood disorders via increased neuroinflammation in the brain. However, the precise mechanisms of inflammation and BBB integrity underlying the behavioral profiles induced by social isolation remain poorly understood. Here we showed that chronic childhood social isolation from post-weaning for consecutive 8 weeks in female but not male C57BL/6J mice induces anxiety-like behaviors. The levels of peripheral inflammatory cytokines including interleukin (IL)-1β, IL-6, and tumor necrosis factor (TNF)-α in the plasma of socially isolated female mice were increased. Importantly, we found decreased expression of the endothelial cell tight junction protein Claudin-5, increased BBB breakdown and microglial activation in the amygdala of isolated but not group-housed female mice. Moreover, the neuronal activity in the amygdala was increased as evidenced by c-fos positive cells, and the levels of IL-1β in the amygdala, a critical brain region for regulating social processing and interaction, were also higher in female mice exposed to social isolation. Finally, down-regulation of Claudin-5 induced anxiety-like behaviors in group-housed females and overexpression of Claudin-5 with adeno-associated virus in the amygdala to restore BBB integrity decreased subsequent anxiety-like behaviors. Together, these findings suggest that chronic childhood social isolation impaired BBB permeability and caused neuroinflammation in the amygdala by recruiting peripheral cytokines into the brain and activating microglia, consequently triggering the development of anxiety-like behaviors in female mice.
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Affiliation(s)
- Xiao Wu
- School of Basic Medical Sciences, Peking University, Beijing, China
- National Institute on Drug Dependence and Beijing Key Laboratory of Drug Dependence, Peking University, Beijing, China
| | - Zengbo Ding
- National Institute on Drug Dependence and Beijing Key Laboratory of Drug Dependence, Peking University, Beijing, China
| | - Tengteng Fan
- Peking University Sixth Hospital, Peking University Institute of Mental Health, NHC Key Laboratory of Mental Health (Peking University), National Clinical Research Center for Mental Disorders (Peking University Sixth Hospital), Beijing, China
| | - Ke Wang
- National Institute on Drug Dependence and Beijing Key Laboratory of Drug Dependence, Peking University, Beijing, China
| | - Suxia Li
- National Institute on Drug Dependence and Beijing Key Laboratory of Drug Dependence, Peking University, Beijing, China
| | - Jing Zhao
- Department of Neurology, Minhang Hospital, Fudan University, Shanghai, China
- *Correspondence: Jing Zhao, ; Weili Zhu,
| | - Weili Zhu
- School of Basic Medical Sciences, Peking University, Beijing, China
- National Institute on Drug Dependence and Beijing Key Laboratory of Drug Dependence, Peking University, Beijing, China
- *Correspondence: Jing Zhao, ; Weili Zhu,
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Min C, Ling R, Chen M, Xia D, Chen R, Li X. Enriched environment rescues neonatal pain induced cognitive deficits and the impaired hippocampal synaptic plasticity later in life. Dev Neurobiol 2022; 82:545-561. [PMID: 35945168 DOI: 10.1002/dneu.22898] [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: 12/14/2021] [Revised: 05/04/2022] [Accepted: 07/27/2022] [Indexed: 11/06/2022]
Abstract
Although extensive and untreated pain that occurs during a critical developmental window may impair cognition later in life, environmental interventions at early might promote. However, the underlying mechanism is poorly understood. Our current study utilized a rat model of "repetitive needle pricks" from the day of birth (P0) to postnatal day 7 (P7) to mimic the painful experience of preterm neonates in the Neonatal intensive care unit (NICU). Enriched environment (EE) during development period (from P15 to P70) was implemented as a nonpharmacological intervention approach. Electrophysiological recording, behavioral tests and biochemical analysis were performed after the end of EE (between P71 and P80). Results showed neonatal repetitive pain resulted in a reduction in mechanical withdrawal thresholds by the von Frey test in P70 (P < 0.001). Furthermore, neonatal repetitive pain impaired spatial learning and memory (P < 0.05) and even led to dysfunction in fear memory (P < 0.01). In contrast, EE rescued neonatal pain induced cognitive deficits and normalized hippocampal long-term potentiation in rats exposed to neonatal pain (P < 0.05). The beneficial effect of EE might be the improvements in hippocampal synaptic plasticity via up-regulating neurotrophic factors and N-methyl-D-aspartate (NMDA) receptors in the hippocampus. Our findings provide evidence that early environmental intervention might be a safe strategy to overcome neurodevelopmental abnormalities in preterm infants who experienced multiple procedural painful events during the early critical period. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Cuiting Min
- Department of Child Health Care, Children's Hospital of Nanjing Medical University, No.72 Guangzhou Road, Nanjing, Jiangsu Province, 210008, P.R. China
| | - Ru Ling
- Department of Child Health Care, Children's Hospital of Nanjing Medical University, No.72 Guangzhou Road, Nanjing, Jiangsu Province, 210008, P.R. China
| | - Mengying Chen
- Department of Child Health Care, Children's Hospital of Nanjing Medical University, No.72 Guangzhou Road, Nanjing, Jiangsu Province, 210008, P.R. China
| | - Dongqing Xia
- Department of Child Health Care, Children's Hospital of Nanjing Medical University, No.72 Guangzhou Road, Nanjing, Jiangsu Province, 210008, P.R. China
| | - Ran Chen
- Department of Child Health Care, Children's Hospital of Nanjing Medical University, No.72 Guangzhou Road, Nanjing, Jiangsu Province, 210008, P.R. China
| | - Xiaonan Li
- Department of Child Health Care, Children's Hospital of Nanjing Medical University, No.72 Guangzhou Road, Nanjing, Jiangsu Province, 210008, P.R. China
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9
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Guven EB, Pranic NM, Unal G. The differential effects of brief environmental enrichment following social isolation in rats. COGNITIVE, AFFECTIVE & BEHAVIORAL NEUROSCIENCE 2022; 22:818-832. [PMID: 35199313 PMCID: PMC8865499 DOI: 10.3758/s13415-022-00989-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Accepted: 02/07/2022] [Indexed: 11/08/2022]
Abstract
Environmental enrichment (EE) in rodents is associated with a wide range of physiological, affective, and cognitive benefits. A seemingly opposite housing condition, social isolation (SI), is used as a rodent model of stress, negatively affecting several neurobiological mechanisms and hampering cognitive performance. Experimental designs that involve switching between these housing conditions produced mixed results. We evaluated different behavioral and cognitive effects of brief EE following long-term, SI-induced stress. We revealed the influence of enrichment after 30 days of isolation on behavioral despair, anxiety-like behavior, and spatial working memory in adult male Wistar rats and found a substantial anxiolytic effect in the experimental (SI to EE) group. Interestingly, rats exposed to EE also showed increased behavioral despair compared with the control (continuous SI) group. There was no difference in spatial working memory performance at the end of a 5-day water Y-maze (WYM) test. However, the SI to EE animals displayed better memory performance in the first 2 days of the WYM, indicating faster learning. In line with this difference, we recorded significantly more c-Fos-immunopositive (c-Fos+) cells in the retrosplenial and perirhinal cortices of the SI to EE animals. The lateral and basolateral nuclei of the amygdala showed no such difference. These results suggest that brief enrichment following isolation stress leads to differential results in affective and cognitive systems.
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Affiliation(s)
- Elif Beyza Guven
- Department of Psychology, Behavioral Neuroscience Laboratory, Boğaziçi University, 34342, Istanbul, Turkey
- Center for Molecular and Behavioral Neuroscience, Rutgers University, Newark, NJ, USA
| | - Nicole Melisa Pranic
- Department of Psychology, Behavioral Neuroscience Laboratory, Boğaziçi University, 34342, Istanbul, Turkey
- Department of Psychology, Cornell University, Ithaca, NY, USA
| | - Gunes Unal
- Department of Psychology, Behavioral Neuroscience Laboratory, Boğaziçi University, 34342, Istanbul, Turkey.
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10
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Altered dorsal functional connectivity after post-weaning social isolation and resocialization in mice. Neuroimage 2021; 245:118740. [PMID: 34808365 DOI: 10.1016/j.neuroimage.2021.118740] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 10/27/2021] [Accepted: 11/16/2021] [Indexed: 01/15/2023] Open
Abstract
BACKGROUND Social isolation (SI) leads to various mental health disorders. Despite abundant studies on behavioral and neurobiological changes induced by post-weaning SI, the characterization of its imaging correlates, such as resting-state functional connectivity (RSFC), is critically lacking. In addition, the effects of resocialization after isolation remain unclear. Therefore, this study aimed to explore the effects of 1) SI on cortical functional connectivity and 2) subsequent resocialization on behavior and functional connectivity. METHODS Behavioral tests were conducted to validate the post-weaning SI mouse model, which is isolated during the juvenile period. Wide-field optical mapping was performed to observe both neuronal and hemodynamic signals in the cortex under anesthesia. Using seed-based and graph theoretical analyses, RSFC was analyzed. SI mice were then resocialized and the array of behavior and imaging tests was conducted. RESULTS Behaviorally, SI mice showed elevated anxiety, social preference, and aggression. RSFC analyses using the seed-based approach revealed decreased cortical functional connectivity in SI mice, especially in the frontal region. Graph network analyses demonstrated significant reduction in network segregation measures. After resocialization, mice exhibited recovered anxiogenic and aggressive behavior, but RSFC data did not show significant changes. CONCLUSIONS We observed an overall decrease in functional connectivity in SI mice. Moreover, resocialization restored the disruptions in behavioral patterns but functional connectivity was not recovered. To our knowledge, this is the first study to report that, despite the recovering tendencies of behavior in resocialized mice, similar changes in RSFC were not observed. This suggests that disruptions in functional connectivity caused by social isolation remain as long-term sequelae.
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Zhang X, Yan W, Xue Y, Xu H, Li J, Zhao Z, Sun Y, Wang Y, He J, Huang Y, Yu D, Xiao Z, Yin S. Roles of miR-432 and circ_0000418 in mediating the anti-depressant action of ADAR1. Neurobiol Stress 2021; 15:100396. [PMID: 34568523 PMCID: PMC8449188 DOI: 10.1016/j.ynstr.2021.100396] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 09/07/2021] [Accepted: 09/11/2021] [Indexed: 12/27/2022] Open
Abstract
Adenosine deaminase acting on RNA1 (ADAR1) is a newly discovered epigenetic molecule marker that is sensitive to environmental stressors. A recent study has demonstrated that ADAR1 affects BDNF expression via miR-432 and is involved in antidepressant action. However, the detailed molecular mechanism is still unclear. We have uncovered a new molecular mechanism showing the involvement of miR-432 and circ_0000418 in mediating the antidepressant action of ADAR1. We demonstrate that the ADAR1 inducer (IFN-γ) alleviates the depressive-like behaviors of BALB/c mice treated with chronic unpredictable stress (CUS) exposure. Moreover, both in vivo and in vitro studies show that ADAR1 differently impacts miR-432 and circ_0000418 expressions. Furthermore, the in vitro results demonstrate that circ_0000418 oppositely affects BDNF expression. Together, our results indicate that ADAR1 affects CUS-induced depressive-like behavior and BDNF expression by acting on miR-432 and circ_0000418. Elucidation of this new molecular mechanism will not only provide insights into further understanding the important role of ADAR1 in stress-induced depressive-like behavior but also suggest a potential therapeutic strategy for developing novel anti-depressive drugs. MiR-432 and circ_0000418 mediates the antidepressant action of ADAR1. MiR-432 and circ_0000418 interactively affect BDNF expression. LIN28B is involved in the interaction among ADAR1, miR-432, and circ_0000418. HNRNPC is involved in the regulatory role of circ_0000418 on BDNF.
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Affiliation(s)
- Xiaonan Zhang
- College of Basic Medical Sciences, Dalian Medical University, Dalian, Liaoning, China.,National and Local Joint Engineering Research Center for Drug Research and Development of Neurodegenerative Diseases, Dalian, Liaoning, China
| | - Wei Yan
- College of Basic Medical Sciences, Dalian Medical University, Dalian, Liaoning, China.,National and Local Joint Engineering Research Center for Drug Research and Development of Neurodegenerative Diseases, Dalian, Liaoning, China
| | - Ying Xue
- College of Basic Medical Sciences, Dalian Medical University, Dalian, Liaoning, China.,National and Local Joint Engineering Research Center for Drug Research and Development of Neurodegenerative Diseases, Dalian, Liaoning, China
| | - Hong Xu
- College of Basic Medical Sciences, Dalian Medical University, Dalian, Liaoning, China
| | - Jinying Li
- The 2nd Affiliated Hospital, Dalian Medical University, Dalian, Liaoning, China
| | - Ziwei Zhao
- College of Basic Medical Sciences, Dalian Medical University, Dalian, Liaoning, China.,National and Local Joint Engineering Research Center for Drug Research and Development of Neurodegenerative Diseases, Dalian, Liaoning, China
| | - Ye Sun
- The 2nd Affiliated Hospital, Dalian Medical University, Dalian, Liaoning, China
| | - Yanfang Wang
- College of Basic Medical Sciences, Dalian Medical University, Dalian, Liaoning, China.,National and Local Joint Engineering Research Center for Drug Research and Development of Neurodegenerative Diseases, Dalian, Liaoning, China
| | - Jiaqian He
- College of Basic Medical Sciences, Dalian Medical University, Dalian, Liaoning, China
| | - Yuyue Huang
- College of Basic Medical Sciences, Dalian Medical University, Dalian, Liaoning, China
| | - Deqin Yu
- College of Basic Medical Sciences, Dalian Medical University, Dalian, Liaoning, China.,National and Local Joint Engineering Research Center for Drug Research and Development of Neurodegenerative Diseases, Dalian, Liaoning, China
| | - Zhaoyang Xiao
- The 2nd Affiliated Hospital, Dalian Medical University, Dalian, Liaoning, China
| | - Shengming Yin
- College of Basic Medical Sciences, Dalian Medical University, Dalian, Liaoning, China.,National and Local Joint Engineering Research Center for Drug Research and Development of Neurodegenerative Diseases, Dalian, Liaoning, China
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12
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Acero-Castillo MC, Ardila-Figueroa MC, Botelho de Oliveira S. Anhedonic Type Behavior and Anxiety Profile of Wistar-UIS Rats Subjected to Chronic Social Isolation. Front Behav Neurosci 2021; 15:663761. [PMID: 34122025 PMCID: PMC8192826 DOI: 10.3389/fnbeh.2021.663761] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Accepted: 04/26/2021] [Indexed: 01/17/2023] Open
Abstract
Chronic Social Isolation (CSI) is a model of prolonged stress employed in a variety of studies to induce depression and anxious behavior in rats. The present study aims to evaluate the effect of CSI on male Wistar rats in terms of "anhedonic-type" behavior in the Sucrose Preference Test (SPT) and anxiogenic profile in the elevated-plus-maze (EPM) test, as well as evaluating the effect of resocialization upon sucrose consumption. A total of 24 adolescent male Wistar rats were evaluated. The animals were housed either together (communally) or socially isolated for 21 days, and then exposed for four consecutive days to the SPT test [water vs. a 32% sucrose solution (SS)]. Four days later, they were again subjected to the SPT test (32% vs. 0.7% SS), and then tested on the EPM apparatus 3 days later. Following the completion of the anxiogenic profile of the model, the animals were resocialized for 72 h and then re-tested once again using the SPT (32% vs. 0.7% SS). Twenty-four hours after this final consumption, the animals were euthanized to record the weight of their adrenal glands (AG). It was found that exposure to CSI produces anhedonic-type behavior and an anxiogenic profile in adolescent male rats, as evidenced in both the SPT and EPM tests, as well as in the animals' physiological stress response. It was also demonstrated that resocialization does not reverse the anhedonic-type behavior, nor the physiological response to stress.
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Affiliation(s)
- María Camila Acero-Castillo
- Psychology, Universidad Pontificia Bolivariana Sectional Bucaramanga, Santander, Colombia.,Neurosciences and Behavior, Universidad Pontificia Bolivariana Sectional Bucaramanga, Santander, Colombia.,Health Sciences, Universidade de Brasilia, Brasilia, Brazil
| | - María Camila Ardila-Figueroa
- Psychology, Universidad Pontificia Bolivariana Sectional Bucaramanga, Santander, Colombia.,Neurosciences and Behavior, Universidad Pontificia Bolivariana Sectional Bucaramanga, Santander, Colombia
| | - Silvia Botelho de Oliveira
- Neurosciences and Behavior, Universidad Pontificia Bolivariana Sectional Bucaramanga, Santander, Colombia.,Psychology, Universidade Estadual Paulista, São Paulo, Brazil.,Psychobiology, Universidade de São Paulo, São Paulo, Brazil.,Faculty of Psychology, Universidad Pontificia Bolivariana Sectional Bucaramanga, Santander, Colombia.,Laboratory of Neurosciences and Behavior, Universidad Pontificia Bolivariana Sectional Bucaramanga, Santander, Colombia
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13
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Rivera DS, Lindsay CB, Oliva CA, Bozinovic F, Inestrosa NC. "Live together, die alone": The effect of re-socialization on behavioural performance and social-affective brain-related proteins after a long-term chronic social isolation stress. Neurobiol Stress 2021; 14:100289. [PMID: 33426200 PMCID: PMC7785960 DOI: 10.1016/j.ynstr.2020.100289] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 12/18/2020] [Accepted: 12/21/2020] [Indexed: 01/02/2023] Open
Abstract
Loneliness affects group-living mammals triggering a cascade of stress-dependent physiological disorders. Indeed, social isolation stress is a major risk factor for several neuropsychiatric disorders including anxiety and depression. Furthermore, social isolation has a negative impact on health and fitness. However, the neurobiological consequences of long-term chronic social isolation stress (LTCSIS) manifested during the adulthood of affected individuals are not fully understood. Our study assessed the impact of LTCSIS and social buffering (re-socialization) on the behavioural performance and social-affective brain-related proteins in diurnal, social, and long-lived Octodon degus (degus). Thereby, anxiety-like and social behaviour, and social recognition memory were assessed in male and female animals subjected to a variety of stress-inducing treatments applied from post-natal and post-weaning until their adulthood. Additionally, we evaluated the relationship among LTCSIS, Oxytocin levels (OXT), and OXT-Ca2+-signalling proteins in the hypothalamus, the hippocampus, and the prefrontal cortex. Our findings suggest that LTCSIS induces anxiety like-behaviour and impairs social novelty preference whereas sociability is unaffected. On the other hand, re-socialization can revert both isolation-induced anxiety and social memory impairment. However, OXT and its signalling remained reduced in the abovementioned brain areas, suggesting that the observed changes in OXT-Ca2+ pathway proteins were permanent in male and female degus. Based on these findings, we conclude degus experience social stress differently, suggesting the existence of sex-related mechanisms to cope with specific adaptive challenges.
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Affiliation(s)
- Daniela S. Rivera
- GEMA Center for Genomics, Ecology & Environment, Facultad de Estudios Interdisciplinarios, Universidad Mayor, Santiago, Chile
| | - Carolina B. Lindsay
- Center of Aging and Regeneration UC (CARE-UC), Departamento de Biología Celular y Molecular, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Carolina A. Oliva
- Center of Aging and Regeneration UC (CARE-UC), Departamento de Biología Celular y Molecular, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Francisco Bozinovic
- Center for Applied Ecology and Sustainability (CAPES), Departamento de Ecología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Nibaldo C. Inestrosa
- Center of Aging and Regeneration UC (CARE-UC), Departamento de Biología Celular y Molecular, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
- Centro de Excelencia en Biomedicina de Magallanes (CEBIMA), Universidad de Magallanes, Punta Arenas, Chile
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14
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Rosado AF, Rosa PB, Platt N, Pierone BC, Neis VB, Severo Rodrigues AL, Kaster MP, Kaufmann FN. Glibenclamide treatment prevents depressive-like behavior and memory impairment induced by chronic unpredictable stress in female mice. Behav Pharmacol 2021; 32:170-181. [PMID: 33079735 DOI: 10.1097/fbp.0000000000000599] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Glibenclamide is a second-generation sulfonylurea used in the treatment of Type 2 Diabetes Mellitus. The primary target of glibenclamide is ATP-sensitive potassium channels inhibition; however, other possible targets include the control of inflammation and blood-brain barrier permeability, which makes this compound potentially interesting for the management of brain-related disorders. Here, we showed that systemic treatment with glibenclamide (5 mg/kg, p.o., for 21 days) could prevent the behavioral despair and the cognitive dysfunction induced by chronic unpredictable stress (CUS) in mice. In nonhypoglycemic doses, glibenclamide attenuated the stress-induced weight loss, decreased adrenal weight, and prevented the increase in glucocorticoid receptors in the prefrontal cortex, suggesting an impact in hypothalamic-pituitary-adrenal (HPA) axis function. Additionally, we did not observe changes in Iba-1, NLRP3 and caspase-1 levels in the prefrontal cortex or hippocampus after CUS or glibenclamide treatment. Thus, this study suggests that chronic treatment with glibenclamide prevents the emotional and cognitive effects of chronic stress in female mice. On the other hand, the control of neuroinflammation and NLRP3 inflammasome pathway is not the major mechanism mediating these effects. The behavioral effects might be mediated, in part, by the normalization of glucocorticoid receptors and HPA axis.
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Affiliation(s)
- Axel Fogaça Rosado
- Department of Biochemistry, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Priscila Batista Rosa
- Department of Biochemistry, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Nicolle Platt
- Department of Biochemistry, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Bruna Caroline Pierone
- Department of Biochemistry, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Vivian Binder Neis
- Department of Biochemistry, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | | | - Manuella Pinto Kaster
- Department of Biochemistry, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | - Fernanda Neutzling Kaufmann
- Department of Biochemistry, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
- Department of Psychiatry and Neuroscience, Faculty of Medicine and CERVO Brain Research Center, Université Laval, Quebec City, Canada
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15
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Amanollahi M, Amanollahi S, Anjomshoa A, Dolatshahi M. Mitigating the negative impacts of aging on cognitive function; modifiable factors associated with increasing cognitive reserve. Eur J Neurosci 2021; 53:3109-3124. [PMID: 33715252 DOI: 10.1111/ejn.15183] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 02/28/2021] [Accepted: 03/03/2021] [Indexed: 12/21/2022]
Abstract
Research suggests that social, physical, and cognitively challenging activities during lifetime, could mitigate the negative effects of aging on cognitive function. This effect is explained by the increased cognitive reserve (CR) resulting from such factors; in fact, such activities, by altering structural and functional properties of the human brain, equip one with more effective compensatory mechanisms to resist brain damage before the presentation of severe clinical symptoms. Therefore, applying appropriate modifications in one's lifestyle and activities may be effective in lowering the risk of developing dementia and cognitive dysfunction in old age, especially in brain areas that are susceptible to aging. In this paper, we are going to review relevant studies discussing the association between important modifiable factors, known as CR proxies (i.e., educational attainment, occupational complexity, physical activity, social engagement, bilingualism, leisure activities, and Mediterranean diet), and different domains of cognitive function, which are affected either in the process of healthy aging or neurodegenerative diseases.
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Affiliation(s)
- Mobina Amanollahi
- School of Medicine, Tehran University of Medical Sciences, Tehran, Iran.,NeuroImaging Network (NIN), Universal Scientific Education and Research Network (USERN), Tehran, Iran
| | - Saba Amanollahi
- School of Electrical and Computer Engineering, University of Tehran, Tehran, Iran
| | - Ali Anjomshoa
- Students' Scientific Research Center (SSRC), Tehran University of Medical Sciences, Tehran, Iran
| | - Mahsa Dolatshahi
- School of Medicine, Tehran University of Medical Sciences, Tehran, Iran.,NeuroImaging Network (NIN), Universal Scientific Education and Research Network (USERN), Tehran, Iran
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16
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The involvement of ADAR1 in antidepressant action by regulating BDNF via miR-432. Behav Brain Res 2021; 402:113087. [PMID: 33412228 DOI: 10.1016/j.bbr.2020.113087] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 11/16/2020] [Accepted: 12/16/2020] [Indexed: 12/26/2022]
Abstract
Brain-derived neurotrophic factor (BDNF) is a biomarker of depression. Recent studies have found adenosine deaminase acting on RNA1 (ADAR1) is a novel target being sensitive to stress at epigenetic level. The epigenetic regulation mechanism of stress-related depression is still unclear so far. To explore the potential regulating mechanism of ADAR1 on BDNF, over and low expression of ADAR1 in PC12 and SH-SY5Y cell lines are prepared. In the meanwhile, chronic unpredictable stress (CUS) mice are treated with ADAR1 inducer (interferon-γ, IFN-γ). ADAR1 regulates BDNF expression, which is proven by that over and low expressions of ADAR1 increase and decrease BDNF mRNA and protein respectively in vitro. Additionally, ADAR1 inducer alleviates the depressive-like behavior of CUS mice by recovering the decreased BDNF protein in brain and serum. Moreover, over and low expressions of ADAR1 reduce and enhance microRNA-432 (miR-432) expression respectively in vitro. Furtherly, over and low miR-432 expressions lead to decreased and increased BDNF and ADAR1 mRNA, protein and immunoreactivity respectively in vitro. The above results demonstrate that ADAR1 is involved in antidepressant action by regulating BDNF via miR-432. Those novel findings can provide a new idea for the study of epigenetic regulation mechanism, early diagnosis, and effective treatment of stress-related depression.
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17
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Effects of age and social isolation on murine hippocampal biochemistry and behavior. Mech Ageing Dev 2020; 191:111337. [PMID: 32866520 DOI: 10.1016/j.mad.2020.111337] [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] [Received: 02/11/2020] [Revised: 07/29/2020] [Accepted: 08/19/2020] [Indexed: 12/20/2022]
Abstract
Social isolation (SI) is a major health risk in older people leading to cognitive decline. This study examined how SI and age influence performance in the novel object recognition (NOR) and elevated plus maze (EPM) tasks in C57BL/6 mice aged 3 or 24 months. Mice were group-housed (groups of 2-3) or isolated for 2 weeks prior to experimentation. Following NOR and EPM testing hippocampal norepinephrine (NE), 5, hydroxytryptamine (5-HT), 5, hydroxyindole acetic acid (5-HIAA), corticosterone (CORT) and interleukin-6 (IL-6) were determined and serum collected for basal CORT analysis. A separate set of mice were exposed to the forced swim test (FST), sacrificed immediately and serum CORT determined. SI impaired performance in the NOR and the FST, reduced hippocampal 5-HT, increased hippocampal IL-6 and increased serum CORT post-FST in young mice. Aged mice either failed to respond significantly to SI (NOR, FST, hippocampal 5-HT, serum CORT post FST) or SI had synergistic effects with age (hippocampal NE, 5-HIAA:5-HT). In conclusion, the lack of response to SI in the aged mice may affect health by preventing them adapting to new stressors, while the synergistic effects of SI with age would increase allostatic load and enhance the deleterious effects of the ageing process.
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18
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Liu Y, Lv L, Wang L, Zhong Y. Social Isolation Induces Rac1-Dependent Forgetting of Social Memory. Cell Rep 2019; 25:288-295.e3. [PMID: 30304669 DOI: 10.1016/j.celrep.2018.09.033] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Revised: 08/20/2018] [Accepted: 09/11/2018] [Indexed: 11/18/2022] Open
Abstract
Social isolation (SI) has detrimental effects on human and animal cognitive functions. In particular, acute isolation in adult mice impairs social recognition memory (SRM). Previous accounts of this impairment have focused primarily on memory consolidation. However, the current study suggests that impaired SRM results from enhanced forgetting. SI accelerates SRM decay without affecting memory formation. The impairment is caused by elevated Rac1 activity in the hippocampus. Using adeno-associated-virus-based genetic manipulation, we found that inhibition of Rac1 activity blocked forgetting of SRM in isolated adult mice, whereas activation of Rac1 accelerated forgetting in group-housed mice. Moreover, resocialization reversed the accelerated forgetting following isolation in correlation with suppression of Rac1 activity. In addition, accelerated long-term potentiation (LTP) decay in isolated mice brain slices was rescued by inhibition of Rac1 activity. Taken together, the findings lead us to conclude that social memory deficits in isolated mice are mediated by enhanced Rac1-dependent forgetting.
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Affiliation(s)
- Yunlong Liu
- Tsinghua-Peking Center for Life Sciences, IDG/McGovern Institute for Brain Research, MOE Key Laboratory of Protein Sciences, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Li Lv
- Tsinghua-Peking Center for Life Sciences, IDG/McGovern Institute for Brain Research, MOE Key Laboratory of Protein Sciences, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Lianzhang Wang
- Tsinghua-Peking Center for Life Sciences, IDG/McGovern Institute for Brain Research, MOE Key Laboratory of Protein Sciences, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Yi Zhong
- Tsinghua-Peking Center for Life Sciences, IDG/McGovern Institute for Brain Research, MOE Key Laboratory of Protein Sciences, School of Life Sciences, Tsinghua University, Beijing 100084, China.
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19
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Yang L, Dong Y, Wu C, Li Y, Guo Y, Yang B, Zong X, Hamblin MR, Cheng-Yi Liu T, Zhang Q. Photobiomodulation preconditioning prevents cognitive impairment in a neonatal rat model of hypoxia-ischemia. JOURNAL OF BIOPHOTONICS 2019; 12:e201800359. [PMID: 30652418 PMCID: PMC6546525 DOI: 10.1002/jbio.201800359] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Revised: 12/02/2018] [Accepted: 01/12/2019] [Indexed: 05/13/2023]
Abstract
Neonatal hypoxia-ischemia (HI) injury caused by oxygen deprivation is the most common cause of mortality and severe neurologic deficits in neonates. The present work evaluated the preventative effect of photobiomodulation (PBM) preconditioning, and its underlying mechanism of action on brain damage in an HI model in neonatal rats. According to the optimal time response of ATP levels in brain samples removed from normal rats, a PBM preconditioning (PBM-P) regimen (808 nm CW laser, 1 cm2 spot, 100 mW/cm2 , 12 J/cm2 ) was delivered to the scalp 6 hours before HI. PBM-P significantly attenuated cognitive impairment, volume shrinkage in the brain, neuron loss, dendritic and synaptic injury after HI. Further mechanistic investigation found that PBM-P could restore HI-induced mitochondrial dynamics and inhibit mitochondrial fragmentation, followed by a robust suppression of cytochrome c release, and prevention of neuronal apoptosis by inhibition of caspase activation. Our work suggests that PBM-P can attenuate HI-induced brain injury by maintaining mitochondrial dynamics and inhibiting the mitochondrial apoptotic pathway.
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Affiliation(s)
- Luodan Yang
- Laboratory of Laser Sports Medicine, College of Physical Education and Sports Science, South China Normal University, University Town, Guangzhou, GD 510006, China
- Department of Neuroscience & Regenerative Medicine, Medical College of Georgia, Augusta University, Augusta, GA 30912
| | - Yan Dong
- Department of Neuroscience & Regenerative Medicine, Medical College of Georgia, Augusta University, Augusta, GA 30912
| | - Chongyun Wu
- Laboratory of Laser Sports Medicine, College of Physical Education and Sports Science, South China Normal University, University Town, Guangzhou, GD 510006, China
| | - Yong Li
- Department of Neuroscience & Regenerative Medicine, Medical College of Georgia, Augusta University, Augusta, GA 30912
| | - Yichen Guo
- Department of Neuroscience & Regenerative Medicine, Medical College of Georgia, Augusta University, Augusta, GA 30912
| | - Baocheng Yang
- Department of Neuroscience & Regenerative Medicine, Medical College of Georgia, Augusta University, Augusta, GA 30912
| | - Xuemei Zong
- Department of Neuroscience & Regenerative Medicine, Medical College of Georgia, Augusta University, Augusta, GA 30912
| | - Michael R. Hamblin
- Wellman Center for Photomedicine, Massachusetts General Hospital, Boston, MA 02114, USA
- Department of Dermatology, Harvard Medical School, Boston, MA 02115, USA
- Harvard-MIT Division of Health Sciences and Technology, Cambridge, MA 02139, USA
| | - Timon Cheng-Yi Liu
- Laboratory of Laser Sports Medicine, College of Physical Education and Sports Science, South China Normal University, University Town, Guangzhou, GD 510006, China
| | - Quanguang Zhang
- Laboratory of Laser Sports Medicine, College of Physical Education and Sports Science, South China Normal University, University Town, Guangzhou, GD 510006, China
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20
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Peveler JL, Swan MP, Wheeler RR, Boehm CA, Hickman DL. Effects of Various Commercially Available Enrichment Options on Handling and Chronic Stress Markers in Female ICR Mice. JOURNAL OF THE AMERICAN ASSOCIATION FOR LABORATORY ANIMAL SCIENCE : JAALAS 2019; 58:119-125. [PMID: 30696520 PMCID: PMC6433358 DOI: 10.30802/aalas-jaalas-17-000103] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Revised: 10/13/2017] [Accepted: 04/09/2018] [Indexed: 06/07/2023]
Abstract
Although social housing of mice generally is preferred, mice must be individually housed in some situations. In these cases, enhanced attention to environmental enrichment is encouraged, but few studies assess the wellbeing of mice provided various enrichments. In this study, we used female ICR mice to evaluate enrichment strategies that encouraged natural behaviors including foraging, exercise, sheltering, and socialization. After 3 mo of exposure to the assigned enrichment strategy, wellbeing was assessed by evaluating behavioral and physiologic differences between groups. The results suggested that the use of red-tinted igloos may decrease markers of mouse wellbeing. However, none of the selected strategies yielded measures of wellbeing indicating improvement as compared to individually housed mice with no enrichment (negative control). Furthermore, measures were not significantly different between paired mice and individually housed mice with no enrichment.
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Affiliation(s)
- Jessica L Peveler
- Laboratory Animal Resource Center, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Melissa P Swan
- Laboratory Animal Resource Center, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - R'nld R Wheeler
- Laboratory Animal Resource Center, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Christine A Boehm
- Laboratory Animal Resource Center, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Debra L Hickman
- Laboratory Animal Resource Center, Indiana University School of Medicine, Indianapolis, Indiana, USA.
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21
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Pereda-Pérez I, Valencia A, Baliyan S, Núñez Á, Sanz-García A, Zamora B, Rodríguez-Fernández R, Esteban JA, Venero C. Systemic administration of a fibroblast growth factor receptor 1 agonist rescues the cognitive deficit in aged socially isolated rats. Neurobiol Aging 2019; 78:155-165. [PMID: 30928883 DOI: 10.1016/j.neurobiolaging.2019.02.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2018] [Revised: 01/22/2019] [Accepted: 02/09/2019] [Indexed: 11/20/2022]
Abstract
Social isolation predominantly occurs in elderly people and it is strongly associated with cognitive decline. However, the mechanisms that produce isolation-related cognitive dysfunction during aging remain unclear. Here, we evaluated the cognitive, electrophysiological, and morphological effects of short- (4 weeks) and long-term (12 weeks) social isolation in aged male Wistar rats. Long-term but not short-term social isolation increased the plasma corticosterone levels and impaired spatial memory in the Morris water maze. Moreover, isolated animals displayed dampened hippocampal long-term potentiation in vivo, both in the dentate gyrus (DG) and CA1, as well as a specific reduction in the volume of the stratum oriens and spine density in CA1. Interestingly, social isolation induced a transient increase in hippocampal basic fibroblast growth factor (FGF2), whereas fibroblast growth factor receptor 1 (FGFR1) levels only increased after long-term isolation. Importantly, subchronic systemic administration of FGL, a synthetic peptide that activates FGFR1, rescued spatial memory in long-term isolated rats. These findings provide new insights into the neurobiological mechanisms underlying the detrimental effects on memory of chronic social isolation in the aged.
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Affiliation(s)
- Inmaculada Pereda-Pérez
- Department of Psychobiology, Universidad Nacional de Educación a Distancia (UNED), Madrid, Spain; Faculty of Experimental Sciences, Universidad Francisco de Vitoria, UFV, Madrid, Spain
| | - Azucena Valencia
- Department of Psychobiology, Universidad Nacional de Educación a Distancia (UNED), Madrid, Spain
| | - Shishir Baliyan
- Department of Psychobiology, Universidad Nacional de Educación a Distancia (UNED), Madrid, Spain
| | - Ángel Núñez
- School of Medicine, Autonoma University of Madrid, Madrid, Spain
| | - Ancor Sanz-García
- Unidad de Análisis de datos, Instituto de Investigación Sanitaria Hospital de la Princesa, Madrid, Spain
| | - Berta Zamora
- Department of Psychobiology, Universidad Nacional de Educación a Distancia (UNED), Madrid, Spain; Fetal Medicine Unit-SAMID, Department of Obstetrics and Gynecology, Hospital Universitario, Madrid, Spain
| | - Raquel Rodríguez-Fernández
- Department of Behavioural Sciences Methodology, Universidad Nacional de Educación a Distancia, Madrid, Spain
| | - José Antonio Esteban
- Department of Molecular Neurobiology, Centro de Biología Molecular "Severo Ochoa", Consejo Superior de Investigaciones Científicas (CSIC) / Universidad Autónoma de Madrid, Madrid, Spain
| | - César Venero
- Department of Psychobiology, Universidad Nacional de Educación a Distancia (UNED), Madrid, Spain.
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Wang B, Wu Q, Lei L, Sun H, Michael N, Zhang X, Wang Y, Zhang Y, Ge B, Wu X, Wang Y, Xin Y, Zhao J, Li S. Long-term social isolation inhibits autophagy activation, induces postsynaptic dysfunctions and impairs spatial memory. Exp Neurol 2018; 311:213-224. [PMID: 30219732 DOI: 10.1016/j.expneurol.2018.09.009] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Revised: 08/14/2018] [Accepted: 09/12/2018] [Indexed: 12/23/2022]
Abstract
. Moreover, we found that L-PWSI increased the protein expression of p-AKT/AKT, p-mTOR/mTOR and p62, whereas the protein levels of LC3B and Beclin1 were decreased indicating an inhibition in autophagy activity. Intraperitoneal injection of rapamycin significantly potentiated fEPSP slope and cognition-related proteins expression in the L-PWSI mice. These results therefore suggest that L-PWSI induces postsynaptic dysfunction by disrupting the interaction between AMPAR, NMDAR and PSD-95, and inhibit the autophagy activity which led to impaired spatial memory and cognitive function.
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Affiliation(s)
- Bin Wang
- Liaoning Provincial Key Laboratory of Cerebral Diseases, Department of Physiology, Dalian Medical University, Dalian, Liaoning, China.
| | - Qiong Wu
- Liaoning Provincial Key Laboratory of Cerebral Diseases, Department of Physiology, Dalian Medical University, Dalian, Liaoning, China
| | - Lei Lei
- Technology Centre of Target-based Nature Products for Prevention and Treatment of Ageing-related Neurodegeneration, Dalian Medical University, Dalian, Liaoning, China
| | - Hailun Sun
- Liaoning Provincial Key Laboratory of Cerebral Diseases, Department of Physiology, Dalian Medical University, Dalian, Liaoning, China
| | - Ntim Michael
- Liaoning Provincial Key Laboratory of Cerebral Diseases, Department of Physiology, Dalian Medical University, Dalian, Liaoning, China
| | - Xuan Zhang
- Technology Centre of Target-based Nature Products for Prevention and Treatment of Ageing-related Neurodegeneration, Dalian Medical University, Dalian, Liaoning, China
| | - Ying Wang
- Department of Cardiology, Institute of Heart and Vessel Diseases of Dalian Medical University, the Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning, China; Department of Biochemistry and Molecular Biology, Dalian Medical University, Dalian, Liaoning, China
| | - Yue Zhang
- Liaoning Provincial Key Laboratory of Cerebral Diseases, Department of Physiology, Dalian Medical University, Dalian, Liaoning, China
| | - Biying Ge
- Technology Centre of Target-based Nature Products for Prevention and Treatment of Ageing-related Neurodegeneration, Dalian Medical University, Dalian, Liaoning, China
| | - Xuefei Wu
- Liaoning Provincial Key Laboratory of Cerebral Diseases, Department of Physiology, Dalian Medical University, Dalian, Liaoning, China
| | - Yue Wang
- Department of Biochemistry and Molecular Biology, Dalian Medical University, Dalian, Liaoning, China
| | - Yi Xin
- Department of Biochemistry and Molecular Biology, Dalian Medical University, Dalian, Liaoning, China.
| | - Jie Zhao
- Technology Centre of Target-based Nature Products for Prevention and Treatment of Ageing-related Neurodegeneration, Dalian Medical University, Dalian, Liaoning, China.
| | - Shao Li
- Liaoning Provincial Key Laboratory of Cerebral Diseases, Department of Physiology, Dalian Medical University, Dalian, Liaoning, China.
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Yu W, Xu H, Xue Y, An D, Li H, Chen W, Yu D, Sun Y, Ma J, Tang Y, Xiao Z, Yin S. 5-HT 2CR antagonist/5-HT 2CR inverse agonist recovered the increased isolation-induced aggressive behavior of BALB/c mice mediated by ADAR1 (p110) expression and Htr2c RNA editing. Brain Behav 2018; 8:e00929. [PMID: 29541541 PMCID: PMC5840448 DOI: 10.1002/brb3.929] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
INTRODUCTION Social isolation enhances the aggressive behavior of animals, but the detailed mechanism remains unclear. Epigenetic studies have suggested that Htr2c RNA editing is closely related to aggressive behavior. This study aims to obtain a fundamental understanding of how social isolation impacts adenosine deaminase acting on RNA 1 (ADAR1, RNA editing enzyme) and Htr2c RNA editing, leading to aggressive behavior, and explore the effective solutions for the recovery of this behavior. METHODS We evaluated 21-day-old BALB/c mice with and without isolation for aggressive behavior using a resident-intruder test. Immune-reactivity and protein expression of ADAR1 (p110) were measured using immunohistochemistry and Western blotting. Htr2c RNA editing was evaluated using pyrosequencing. In addition, the 5-HT 2C R antagonist SB243213/5-HT 2C R inverse agonist SB206553 was used to treat the isolated mice, and the performance of both treatments on the behavior, ADAR1 (p110) expression, and Htr2c RNA editing in isolated mice was examined. RESULTS Both the protein expression and immune-reactivity of ADAR1 (p110) in the amygdala decreased, but the percentage of Htr2c RNA editing at A and B sites of amygdala only showed a moderate increase in isolated BALB/c mice with enhanced aggressive behavior compared to the age-matched group-housed BALB/c mice. Additionally, treatment with the 5-HT 2C R antagonist SB243213/5-HT 2C R inverse agonist SB206553 recovered the enhanced aggressive behavior of isolated mice and returned the protein expression and immune-reactivity of ADAR1 (p110) back to the normal level. Moreover, compared to the age-matched isolated mice treated with physiological saline, isolated mice treated with 5-HT 2C R inverse agonist SB206553 showed a lower percentage of Htr2c RNA editing at both A and B sites, and the same result occurred in isolated mice treated with 5-HT 2C R antagonist SB243213 at B site of Htr2c RNA editing. CONCLUSIONS The 5-HT 2C R antagonist SB243213/5-HT 2C R inverse agonist SB206553 recovered increased aggressive behavior of isolated BALB/c mice mediated by ADAR1 (p110) expression and Htr2c RNA editing.
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Affiliation(s)
- Weizhi Yu
- College of Basic Medical Sciences Dalian Medical University Dalian China
| | - Hong Xu
- College of Basic Medical Sciences Dalian Medical University Dalian China
| | - Ying Xue
- College of Basic Medical Sciences Dalian Medical University Dalian China
| | - Dong An
- College of Basic Medical Sciences Dalian Medical University Dalian China
| | - Huairui Li
- The 2nd Affiliated Hospital Dalian Medical University Dalian China
| | - Wei Chen
- College of Basic Medical Sciences Dalian Medical University Dalian China
| | - Deqin Yu
- College of Basic Medical Sciences Dalian Medical University Dalian China
| | - Yiping Sun
- College of Basic Medical Sciences Dalian Medical University Dalian China
| | - Jianmei Ma
- College of Basic Medical Sciences Dalian Medical University Dalian China
| | - Yiyuan Tang
- Texas Tech Neuroimaging Institute Texas Tech University Lubbock TX USA
| | - Zhaoyang Xiao
- The 2nd Affiliated Hospital Dalian Medical University Dalian China
| | - Shengming Yin
- College of Basic Medical Sciences Dalian Medical University Dalian China
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24
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Poletti S, Aggio V, Brioschi S, Dallaspezia S, Colombo C, Benedetti F. Multidimensional cognitive impairment in unipolar and bipolar depression and the moderator effect of adverse childhood experiences. Psychiatry Clin Neurosci 2017; 71:309-317. [PMID: 28004481 DOI: 10.1111/pcn.12497] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Revised: 11/29/2016] [Accepted: 12/15/2016] [Indexed: 12/15/2022]
Abstract
AIM Studies have demonstrated neuropsychological deficits across a variety of cognitive domains in depression. These deficits are observable both in major depressive disorder (MDD) and in bipolar disorder (BD) and are present in each phase of the illness, including euthymia. Adverse childhood experiences (ACE) have been associated with an increased risk of developing psychiatric disorders and cognitive deficits. The aim of this study was to assess neuropsychological performances in a sample of MDD and BD patients during a depressive episode compared to healthy controls (HC) and, to investigate if ACE affect the cognitive profiles in the three groups. METHODS Seventy-six BD patients, 57 MDD patients, and 57 HC underwent neuropsychological assessment for cognitive performances through the Brief Assessment of Cognition in Schizophrenia and Wisconsin Card Sorting Test. RESULTS Both BD and MDD patients obtained significantly lower domain scores across the entire battery compared to HC. Splitting the sample according to exposure to ACE (high and low), the differences observed in the whole sample persisted only in the subsample of those patients exposed to high ACE. CONCLUSION This study confirms that cognitive impairment is present both in MDD and BD, albeit in different degrees of severity, and highlights the importance of early stress as a moderator factor when investigating cognitive functions in mood disorders.
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Affiliation(s)
- Sara Poletti
- Division of Clinical Neurosciences, Scientific Institute and University Vita-Salute San Raffaele, Milan, Italy.,C.E.R.M.A.C. (Centro di Eccellenza Risonanza Magnetica ad Alto Campo), University Vita-Salute San Raffaele, Milan, Italy
| | - Veronica Aggio
- Division of Clinical Neurosciences, Scientific Institute and University Vita-Salute San Raffaele, Milan, Italy.,C.E.R.M.A.C. (Centro di Eccellenza Risonanza Magnetica ad Alto Campo), University Vita-Salute San Raffaele, Milan, Italy
| | - Silvia Brioschi
- Division of Clinical Neurosciences, Scientific Institute and University Vita-Salute San Raffaele, Milan, Italy
| | - Sara Dallaspezia
- Division of Clinical Neurosciences, Scientific Institute and University Vita-Salute San Raffaele, Milan, Italy
| | - Cristina Colombo
- Division of Clinical Neurosciences, Scientific Institute and University Vita-Salute San Raffaele, Milan, Italy
| | - Francesco Benedetti
- Division of Clinical Neurosciences, Scientific Institute and University Vita-Salute San Raffaele, Milan, Italy.,C.E.R.M.A.C. (Centro di Eccellenza Risonanza Magnetica ad Alto Campo), University Vita-Salute San Raffaele, Milan, Italy
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