101
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Boutin A, Doyon J. A sleep spindle framework for motor memory consolidation. Philos Trans R Soc Lond B Biol Sci 2020; 375:20190232. [PMID: 32248783 DOI: 10.1098/rstb.2019.0232] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Sleep spindle activity has repeatedly been found to contribute to brain plasticity and consolidation of both declarative and procedural memories. Here we propose a framework for motor memory consolidation that outlines the essential contribution of the hierarchical and multi-scale periodicity of spindle activity, as well as of the synchronization and interaction of brain oscillations during this sleep-dependent process. We posit that the clustering of sleep spindles in 'trains', together with the temporally organized alternation between spindles and associated refractory periods, is critical for efficient reprocessing and consolidation of motor memories. We further argue that the long-term retention of procedural memories relies on the synchronized (functional connectivity) local reprocessing of new information across segregated, but inter-connected brain regions that are involved in the initial learning process. Finally, we propose that oscillatory synchrony in the spindle frequency band may reflect the cross-structural reactivation, reorganization and consolidation of motor, and potentially declarative, memory traces within broader subcortical-cortical networks during sleep. This article is part of the Theo Murphy meeting issue 'Memory reactivation: replaying events past, present and future'.
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Affiliation(s)
- Arnaud Boutin
- Université Paris-Saclay, CIAMS, 91405, Orsay, France.,Université d'Orléans, CIAMS, 45067, Orléans, France
| | - Julien Doyon
- McConnell Brain Imaging Centre, Montreal Neurological Institute, McGill University, Montreal, Canada.,Department of Neurology and Neurosurgery, Montreal Neurological Institute, McGill University, Montreal, Canada
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102
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Robertson EM, Genzel L. Memories replayed: reactivating past successes and new dilemmas. Philos Trans R Soc Lond B Biol Sci 2020; 375:20190226. [PMID: 32248775 DOI: 10.1098/rstb.2019.0226] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Our experiences continue to be processed 'offline' in the ensuing hours of both wakefulness and sleep. During these different brain states, the memory formed during our experience is replayed or reactivated. Here, we discuss the unique challenges in studying offline reactivation, the growth in both the experimental and analytical techniques available across different animals from rodents to humans to capture these offline events, the important challenges this innovation has brought, our still modest understanding of how reactivation drives diverse synaptic changes across circuits, and how these changes differ (if at all), and perhaps complement, those at memory formation. Together, these discussions highlight critical emerging issues vital for identifying how reactivation affects circuits, and, in turn, behaviour, and provides a broader context for the contributions in this special issue. This article is part of the Theo Murphy meeting issue 'Memory reactivation: replaying events past, present and future'.
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Affiliation(s)
- Edwin M Robertson
- Institute of Neuroscience & Psychology, University of Glasgow, Glasgow, UK
| | - Lisa Genzel
- Donders Institute for Brain, Cognition and Behaviour, Radboud University, Nijmegen, The Netherlands
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103
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104
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Izawa S, Chowdhury S, Miyazaki T, Mukai Y, Ono D, Inoue R, Ohmura Y, Mizoguchi H, Kimura K, Yoshioka M, Terao A, Kilduff TS, Yamanaka A. REM sleep-active MCH neurons are involved in forgetting hippocampus-dependent memories. Science 2020; 365:1308-1313. [PMID: 31604241 DOI: 10.1126/science.aax9238] [Citation(s) in RCA: 120] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2019] [Accepted: 08/15/2019] [Indexed: 12/21/2022]
Abstract
The neural mechanisms underlying memory regulation during sleep are not yet fully understood. We found that melanin concentrating hormone-producing neurons (MCH neurons) in the hypothalamus actively contribute to forgetting in rapid eye movement (REM) sleep. Hypothalamic MCH neurons densely innervated the dorsal hippocampus. Activation or inhibition of MCH neurons impaired or improved hippocampus-dependent memory, respectively. Activation of MCH nerve terminals in vitro reduced firing of hippocampal pyramidal neurons by increasing inhibitory inputs. Wake- and REM sleep-active MCH neurons were distinct populations that were randomly distributed in the hypothalamus. REM sleep state-dependent inhibition of MCH neurons impaired hippocampus-dependent memory without affecting sleep architecture or quality. REM sleep-active MCH neurons in the hypothalamus are thus involved in active forgetting in the hippocampus.
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Affiliation(s)
- Shuntaro Izawa
- Department of Neuroscience II, Research Institute of Environmental Medicine, Nagoya University, Nagoya 464-8601, Japan.,Department of Neural Regulation, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan.,CREST, JST, Honcho Kawaguchi, Saitama 332-0012, Japan.,JSPS Research Fellowship for Young Scientists, Tokyo 102-0083, Japan
| | - Srikanta Chowdhury
- Department of Neuroscience II, Research Institute of Environmental Medicine, Nagoya University, Nagoya 464-8601, Japan.,Department of Neural Regulation, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan.,CREST, JST, Honcho Kawaguchi, Saitama 332-0012, Japan
| | - Toh Miyazaki
- Department of Neuroscience II, Research Institute of Environmental Medicine, Nagoya University, Nagoya 464-8601, Japan.,Department of Neural Regulation, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan.,CREST, JST, Honcho Kawaguchi, Saitama 332-0012, Japan.,JSPS Research Fellowship for Young Scientists, Tokyo 102-0083, Japan
| | - Yasutaka Mukai
- Department of Neuroscience II, Research Institute of Environmental Medicine, Nagoya University, Nagoya 464-8601, Japan.,Department of Neural Regulation, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan.,CREST, JST, Honcho Kawaguchi, Saitama 332-0012, Japan.,JSPS Research Fellowship for Young Scientists, Tokyo 102-0083, Japan
| | - Daisuke Ono
- Department of Neuroscience II, Research Institute of Environmental Medicine, Nagoya University, Nagoya 464-8601, Japan.,Department of Neural Regulation, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan.,CREST, JST, Honcho Kawaguchi, Saitama 332-0012, Japan
| | - Ryo Inoue
- Department of Neuroscience II, Research Institute of Environmental Medicine, Nagoya University, Nagoya 464-8601, Japan.,Department of Neural Regulation, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan
| | - Yu Ohmura
- Department of Neuropharmacology, Graduate School of Medicine, Hokkaido University, Sapporo 060-8638, Japan
| | - Hiroyuki Mizoguchi
- Research Center for Next-Generation Drug Development, Research Institute of Environmental Medicine, Nagoya University, Nagoya 464-8601, Japan
| | - Kazuhiro Kimura
- Laboratory of Biochemistry, Department of Biomedical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo 060-0818, Japan
| | - Mitsuhiro Yoshioka
- Department of Neuropharmacology, Graduate School of Medicine, Hokkaido University, Sapporo 060-8638, Japan
| | - Akira Terao
- Laboratory of Biochemistry, Department of Biomedical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo 060-0818, Japan.,School of Biological Sciences, Tokai University, Sapporo 005-8601, Japan
| | - Thomas S Kilduff
- Center for Neuroscience, Biosciences Division, SRI International, Menlo Park, CA, USA
| | - Akihiro Yamanaka
- Department of Neuroscience II, Research Institute of Environmental Medicine, Nagoya University, Nagoya 464-8601, Japan. .,Department of Neural Regulation, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan.,CREST, JST, Honcho Kawaguchi, Saitama 332-0012, Japan
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105
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Li Y, Bao H, Luo Y, Yoan C, Sullivan HA, Quintanilla L, Wickersham I, Lazarus M, Shih YYI, Song J. Supramammillary nucleus synchronizes with dentate gyrus to regulate spatial memory retrieval through glutamate release. eLife 2020; 9:53129. [PMID: 32167473 PMCID: PMC7069722 DOI: 10.7554/elife.53129] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Accepted: 02/24/2020] [Indexed: 12/29/2022] Open
Abstract
The supramammillary nucleus (SuM) provides substantial innervation to the dentate gyrus (DG). It remains unknown how the SuM and DG coordinate their activities at the circuit level to regulate spatial memory. Additionally, SuM co-releases GABA and glutamate to the DG, but the relative role of GABA versus glutamate in regulating spatial memory remains unknown. Here we report that SuM-DG Ca2+ activities are highly correlated during spatial memory retrieval as compared to the moderate correlation during memory encoding when mice are performing a location discrimination task. Supporting this evidence, we demonstrate that the activity of SuM neurons or SuM-DG projections is required for spatial memory retrieval. Furthermore, we show that SuM glutamate transmission is necessary for both spatial memory retrieval and highly-correlated SuM-DG activities during spatial memory retrieval. Our studies identify a long-range SuM-DG circuit linking two highly correlated subcortical regions to regulate spatial memory retrieval through SuM glutamate release.
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Affiliation(s)
- Yadong Li
- Department of Pharmacology, University of North Carolina, Chapel Hill, United States.,Neuroscience Center, University of North Carolina, Chapel Hill, United States
| | - Hechen Bao
- Department of Pharmacology, University of North Carolina, Chapel Hill, United States.,Neuroscience Center, University of North Carolina, Chapel Hill, United States
| | - Yanjia Luo
- Department of Pharmacology, University of North Carolina, Chapel Hill, United States.,Neuroscience Center, University of North Carolina, Chapel Hill, United States
| | - Cherasse Yoan
- International Institute for Integrative Sleep Medicine (WPI-IIIS), University of Tsukuba, Tsukuba, Japan
| | - Heather Anne Sullivan
- The McGovern Institute for Brain Research, Massachusetts Institute of Technology, Cambridge, United States
| | - Luis Quintanilla
- Department of Pharmacology, University of North Carolina, Chapel Hill, United States.,Neuroscience Center, University of North Carolina, Chapel Hill, United States.,Neurobiology Curriculum, University of North Carolina, Chapel Hill, United States
| | - Ian Wickersham
- The McGovern Institute for Brain Research, Massachusetts Institute of Technology, Cambridge, United States
| | - Michael Lazarus
- International Institute for Integrative Sleep Medicine (WPI-IIIS), University of Tsukuba, Tsukuba, Japan
| | - Yen-Yu Ian Shih
- Department of Neurology and Biomedical Research Imaging Center, University of North Carolina, Chapel Hill, United States
| | - Juan Song
- Department of Pharmacology, University of North Carolina, Chapel Hill, United States.,Neuroscience Center, University of North Carolina, Chapel Hill, United States
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106
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da Luz MHM, Pino JMV, Santos TG, Antunes HKM, Martins VR, de Souza AAL, Torquato RJS, Lee KS. Sleep deprivation regulates availability of PrP C and Aβ peptides which can impair interaction between PrP C and laminin and neuronal plasticity. J Neurochem 2020; 153:377-389. [PMID: 31950499 PMCID: PMC7383904 DOI: 10.1111/jnc.14960] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 12/17/2019] [Accepted: 01/07/2020] [Indexed: 11/30/2022]
Abstract
PrPC is a glycoprotein capable to interact with several molecules and mediates diverse signaling pathways. Among numerous ligands, laminin (LN) is known to promote neurite outgrowth and memory consolidation, while amyloid‐beta oligomers (Aβo) trigger synaptic dysfunction. In both pathways, mGluR1 is recruited as co‐receptor. The involvement of PrPC/mGluR1 in these opposite functions suggests that this complex is a key element in the regulation of synaptic activity. Considering that sleep‐wake cycle is important for synaptic homeostasis, we aimed to investigate how sleep deprivation affects the expression of PrPC and its ligands, laminin, Aβo, and mGluR1, a multicomplex that can interfere with neuronal plasticity. To address this question, hippocampi of control (CT) and sleep deprived (SD) C57BL/6 mice were collected at two time points of circadian period (13 hr and 21 hr). We observed that sleep deprivation reduced PrPC and mGluR1 levels with higher effect in active state (21 hr). Sleep deprivation also caused accumulation of Aβ peptides in rest period (13 hr), while laminin levels were not affected. In vitro binding assay showed that Aβo can compete with LN for PrPC binding. The influence of Aβo was also observed in neuritogenesis. LN alone promoted longer neurite outgrowth than non‐treated cells in both Prnp+/+ and Prnp0/0 genotypes. Aβo alone did not show any effects, but when added together with LN, it attenuated the effects of LN only in Prnp+/+ cells. Altogether, our findings indicate that sleep deprivation regulates the availability of PrPC and Aβ peptides, and based on our in vitro assays, these alterations induced by sleep deprivation can negatively affect LN–PrPC interaction, which is known to play roles in neuronal plasticity. ![]()
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Affiliation(s)
- Marcio H M da Luz
- Department of Biochemistry, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Jessica M V Pino
- Department of Biochemistry, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Tiago G Santos
- International Research Center. A.C.Camargo Cancer Center, São Paulo, Brazil
| | - Hanna K M Antunes
- Department of Psychobiology, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Vilma R Martins
- International Research Center. A.C.Camargo Cancer Center, São Paulo, Brazil
| | - Altay A L de Souza
- Department of Psychobiology, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Ricardo J S Torquato
- Department of Biochemistry, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Kil S Lee
- Department of Biochemistry, Universidade Federal de São Paulo, São Paulo, Brazil
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107
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Gottfried T, Kamer I, Salant I, Urban D, Lawrence YR, Onn A, Bar J. Self-reported sleep quality as prognostic for survival in lung cancer patients. Cancer Manag Res 2020; 12:313-321. [PMID: 32021445 PMCID: PMC6970259 DOI: 10.2147/cmar.s234523] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Accepted: 12/04/2019] [Indexed: 12/28/2022] Open
Abstract
Purpose Sleep is essential for life, as well as having a major impact on quality of life. Not much attention has been given to this important factor in the care of lung cancer patients. Patients and Methods We retrospectively analyzed a cohort of 404 lung cancer patients treated in our institute between 2010 and 2018. Data about sleep quality, distress and pain were self-reported by questionnaires administered to patients at their first clinic visit to the Institute of Oncology. Sex, age, histology, stage, smoking and marital status were extracted from the patients’ charts. Uni- and multi-variate analyses were carried out to evaluate the correlation of these factors with survival. Results Most patients reported some level of distress and pain. Sleep abnormalities were reported by 58.7% of patients. Distress, pain and bad sleep were correlated with shorter survival in univariate analyses; however, only sleep remained associated with survival in multivariate analysis. Patients reporting bad sleep had a median survival of 16 months, compared to 27 months for patients reporting good sleep (hazard ratio 1.83, 95% C.I. 1.27–2.65). Frequent arousals at night were more tightly correlated with survival than difficulty falling asleep. Conclusion Sleep quality, as reported by lung cancer patients, is highly correlated with survival. Further studies are required to comprehend whether poor sleep quality is directly impacting survival or is a result of the cancer aggressiveness and patients’ conditions.
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Affiliation(s)
- Teodor Gottfried
- Chaim Sheba Medical Center, Institute of Oncology, Ramat Gan 5262000, Israel
| | - Iris Kamer
- Chaim Sheba Medical Center, Institute of Oncology, Ramat Gan 5262000, Israel
| | - Iris Salant
- Chaim Sheba Medical Center, Institute of Oncology, Ramat Gan 5262000, Israel
| | - Damien Urban
- Chaim Sheba Medical Center, Institute of Oncology, Ramat Gan 5262000, Israel
| | - Yaacov R Lawrence
- Department of Radiation Oncology, Chaim Sheba Medical Center, Ramat Gan 5262000, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Ramat Aviv, Israel
| | - Amir Onn
- Chaim Sheba Medical Center, Pulmonology Institute, Ramat Gan 5262000, Israel
| | - Jair Bar
- Chaim Sheba Medical Center, Institute of Oncology, Ramat Gan 5262000, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Ramat Aviv, Israel
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108
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Feld GB, Born J. Neurochemical mechanisms for memory processing during sleep: basic findings in humans and neuropsychiatric implications. Neuropsychopharmacology 2020; 45:31-44. [PMID: 31443105 PMCID: PMC6879745 DOI: 10.1038/s41386-019-0490-9] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Revised: 07/17/2019] [Accepted: 07/22/2019] [Indexed: 12/14/2022]
Abstract
Sleep is essential for memory formation. Active systems consolidation maintains that memory traces that are initially stored in a transient store such as the hippocampus are gradually redistributed towards more permanent storage sites such as the cortex during sleep replay. The complementary synaptic homeostasis theory posits that weak memory traces are erased during sleep through a competitive down-selection mechanism, ensuring the brain's capability to learn new information. We discuss evidence from neuropharmacological experiments in humans to show how major neurotransmitters and neuromodulators are implicated in these memory processes. As to the major excitatory neurotransmitter glutamate that plays a prominent role in inducing synaptic consolidation, we show that these processes, while strengthening cortical memory traces during sleep, are insufficient to explain the consolidation of hippocampus-dependent declarative memories. In the inhibitory GABAergic system, we will offer insights how drugs may alter the intricate interplay of sleep oscillations that have been identified to be crucial for strengthening memories during sleep. Regarding the dopaminergic reward system, we will show how it is engaged during sleep replay, but that dopaminergic neuromodulation likely plays a side role for enhancing relevant memories during sleep. Also, we briefly go into basic evidence on acetylcholine and cortisol whose low tone during slow wave sleep (SWS) is crucial in supporting hippocampal-to-neocortical memory transmission. Finally, we will outline how these insights can be used to improve treatment of neuropsychiatric disorders focusing mainly on anxiety disorders, depression, and addiction that are strongly related to memory processing.
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Affiliation(s)
- Gordon B Feld
- Department of Clinical Psychology, Central Institute of Mental Health, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany.
- Department of Addiction Behavior and Addiction Medicine, Central Institute of Mental Health, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany.
- Department of Psychiatry and Psychotherapy, Central Institute of Mental Health, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany.
| | - Jan Born
- Institute of Medical Psychology and Behavioral Neurobiology, University of Tübingen, Tübingen, Germany
- Centre for Integrative Neuroscience, University of Tübingen, Tübingen, Germany
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109
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Marshall L, Cross N, Binder S, Dang-Vu TT. Brain Rhythms During Sleep and Memory Consolidation: Neurobiological Insights. Physiology (Bethesda) 2020; 35:4-15. [DOI: 10.1152/physiol.00004.2019] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Sleep can benefit memory consolidation. The characterization of brain regions underlying memory consolidation during sleep, as well as their temporal interplay, reflected by specific patterns of brain electric activity, is surfacing. Here, we provide an overview of recent concepts and results on the mechanisms of sleep-related memory consolidation. The latest studies strongly impacting future directions of research in this field are highlighted.
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Affiliation(s)
- Lisa Marshall
- Institute for Experimental and Clinical Pharmacology and Toxicology, University of Luebeck, Luebeck, Germany
- Center for Brain, Behavior and Metabolism, University of Luebeck, Luebeck, Germany
| | - Nathan Cross
- Perform Center, Center for Studies in Behavioral Neurobiology, and Department of Health, Kinesiology and Applied Physiology, Concordia University, Montreal, Quebec, Canada
- Centre de Recherche de l’Institut Universitaire de Gériatrie de Montréal, CIUSSS Centre-Sud-de-l’Ile-de-Montréal, Montreal, Quebec, Canada
| | - Sonja Binder
- Institute for Experimental and Clinical Pharmacology and Toxicology, University of Luebeck, Luebeck, Germany
- Center for Brain, Behavior and Metabolism, University of Luebeck, Luebeck, Germany
| | - Thien Thanh Dang-Vu
- Perform Center, Center for Studies in Behavioral Neurobiology, and Department of Health, Kinesiology and Applied Physiology, Concordia University, Montreal, Quebec, Canada
- Centre de Recherche de l’Institut Universitaire de Gériatrie de Montréal, CIUSSS Centre-Sud-de-l’Ile-de-Montréal, Montreal, Quebec, Canada
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110
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Dahal P, Ghani N, Flinker A, Dugan P, Friedman D, Doyle W, Devinsky O, Khodagholy D, Gelinas JN. Interictal epileptiform discharges shape large-scale intercortical communication. Brain 2019; 142:3502-3513. [PMID: 31501850 PMCID: PMC6821283 DOI: 10.1093/brain/awz269] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 06/28/2019] [Accepted: 07/11/2019] [Indexed: 01/07/2023] Open
Abstract
Dynamic interactions between remote but functionally specialized brain regions enable complex information processing. This intercortical communication is disrupted in the neural networks of patients with focal epilepsy, and epileptic activity can exert widespread effects within the brain. Using large-scale human intracranial electroencephalography recordings, we show that interictal epileptiform discharges (IEDs) are significantly coupled with spindles in discrete, individualized brain regions outside of the epileptic network. We found that a substantial proportion of these localized spindles travel across the cortical surface. Brain regions that participate in this IED-driven oscillatory coupling express spindles that have a broader spatial extent and higher tendency to propagate than spindles occurring in uncoupled regions. These altered spatiotemporal oscillatory properties identify areas that are shaped by epileptic activity independent of IED or seizure detection. Our findings suggest that IED-spindle coupling may be an important mechanism of interictal global network dysfunction that could be targeted to prevent disruption of normal neural activity.
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Affiliation(s)
- Prawesh Dahal
- Department of Electrical Engineering, Columbia University, New York, NY, USA
| | - Naureen Ghani
- Institute for Genomic Medicine, Columbia University Medical Center, New York, NY, USA
| | - Adeen Flinker
- Department of Neurology, NYU Langone, New York, NY, USA
- Comprehensive Epilepsy Center, NYU Langone, New York, NY, USA
| | - Patricia Dugan
- Department of Neurology, NYU Langone, New York, NY, USA
- Comprehensive Epilepsy Center, NYU Langone, New York, NY, USA
| | - Daniel Friedman
- Department of Neurology, NYU Langone, New York, NY, USA
- Comprehensive Epilepsy Center, NYU Langone, New York, NY, USA
| | - Werner Doyle
- Comprehensive Epilepsy Center, NYU Langone, New York, NY, USA
- Department of Neurosurgery, NYU Langone, New York, NY, USA
| | - Orrin Devinsky
- Department of Neurology, NYU Langone, New York, NY, USA
- Comprehensive Epilepsy Center, NYU Langone, New York, NY, USA
| | - Dion Khodagholy
- Department of Electrical Engineering, Columbia University, New York, NY, USA
| | - Jennifer N Gelinas
- Institute for Genomic Medicine, Columbia University Medical Center, New York, NY, USA
- Department of Neurology, Columbia University Medical Center, New York, NY, USA
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111
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Cui Y, Li X, Zeljic K, Shan S, Qiu Z, Wang Z. Effect of PEGylated Magnetic PLGA-PEI Nanoparticles on Primary Hippocampal Neurons: Reduced Nanoneurotoxicity and Enhanced Transfection Efficiency with Magnetofection. ACS APPLIED MATERIALS & INTERFACES 2019; 11:38190-38204. [PMID: 31550131 DOI: 10.1021/acsami.9b15014] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Despite broad application of nanotechnology in neuroscience, the nanoneurotoxicity of magnetic nanoparticles in primary hippocampal neurons remains poorly characterized. In particular, understanding how magnetic nanoparticles perturb neuronal calcium homeostasis is critical when considering magnetic nanoparticles as a nonviral vector for effective gene therapy in neuronal diseases. Here, we address the pressing need to systematically investigate the neurotoxicity of magnetic nanoparticles with different surface charges in primary hippocampal neurons. We found that unlike negative and neutral nanoparticles, positively charged magnetic nanoparticles (magnetic poly(lactic-co-glycolic acid) (PLGA)-polyethylenimine (PEI) nanoparticles, MNP-PLGA-PEI NPs) rapidly elevated cytoplasmic calcium levels in primary hippocampal neurons, mainly via extracellular calcium influx regulated by voltage-gated calcium channels. We went on to show that this perturbation of intracellular calcium homeostasis elicited serious cytotoxicity in primary hippocampal neurons. However, our next experiment demonstrated that PEGylation on the surface of MNP-PLGA-PEI NPs shielded the surface charge, thereby preventing the perturbation of intracellular calcium homeostasis. That is, PEGylated MNP-PLGA-PEI NPs reduced nanoneurotoxicity. Importantly, biocompatible PEGylated MNP-PLGA-PEI NPs under an external magnetic field enhanced transfection efficiency (>7%) of plasmid DNA encoding GFP in primary hippocampal neurons compared to NPs without external magnetic field mediation. Moreover, under an external magnetic field, this system achieved gene transfection in the hippocampus of the C57 mouse. Overall, this study is the first to successfully employ biocompatible PEGylated MNP-PLGA-PEI NPs for transfection using a magnetofection strategy in primary hippocampal neurons, thereby providing a nanoplatform as a new perspective for treating neuronal diseases or modulating neuron activities.
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Affiliation(s)
- Yanna Cui
- Institute of Neuroscience, CAS Center for Excellence in Brain Science and Intelligence Technology, State Key Laboratory of Neuroscience , CAS Key Laboratory of Primate Neurobiology, Chinese Academy of Sciences , 320 Yueyang Road , Shanghai 200031 , China
| | - Xiao Li
- Institute of Neuroscience, CAS Center for Excellence in Brain Science and Intelligence Technology, State Key Laboratory of Neuroscience , CAS Key Laboratory of Primate Neurobiology, Chinese Academy of Sciences , 320 Yueyang Road , Shanghai 200031 , China
- School of Basic Medical Science , Fudan University , 138 Yixueyuan Road , Shanghai 200032 , China
| | - Kristina Zeljic
- Institute of Neuroscience, CAS Center for Excellence in Brain Science and Intelligence Technology, State Key Laboratory of Neuroscience , CAS Key Laboratory of Primate Neurobiology, Chinese Academy of Sciences , 320 Yueyang Road , Shanghai 200031 , China
- University of Chinese Academy of Sciences , 19 Yuquan Road , Beijing 100049 , China
| | - Shifang Shan
- Institute of Neuroscience, CAS Center for Excellence in Brain Science and Intelligence Technology, State Key Laboratory of Neuroscience , CAS Key Laboratory of Primate Neurobiology, Chinese Academy of Sciences , 320 Yueyang Road , Shanghai 200031 , China
| | - Zilong Qiu
- Institute of Neuroscience, CAS Center for Excellence in Brain Science and Intelligence Technology, State Key Laboratory of Neuroscience , CAS Key Laboratory of Primate Neurobiology, Chinese Academy of Sciences , 320 Yueyang Road , Shanghai 200031 , China
- University of Chinese Academy of Sciences , 19 Yuquan Road , Beijing 100049 , China
| | - Zheng Wang
- Institute of Neuroscience, CAS Center for Excellence in Brain Science and Intelligence Technology, State Key Laboratory of Neuroscience , CAS Key Laboratory of Primate Neurobiology, Chinese Academy of Sciences , 320 Yueyang Road , Shanghai 200031 , China
- University of Chinese Academy of Sciences , 19 Yuquan Road , Beijing 100049 , China
- Kunming Institute of Zoology, Chinese Academy of Sciences , 32 Jiaochang East Road , Kunming , Yunnan 650223 , China
- Shanghai Research Center for Brain Science and Brain-inspired Intelligence Technology , 100 Haike Road , Shanghai 201210 , China
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112
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Zion DB, Nevat M, Prior A, Bitan T. Prior Knowledge Predicts Early Consolidation in Second Language Learning. Front Psychol 2019; 10:2312. [PMID: 31681106 PMCID: PMC6802599 DOI: 10.3389/fpsyg.2019.02312] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2019] [Accepted: 09/27/2019] [Indexed: 11/27/2022] Open
Abstract
Language learning occurs in distinct phases. Whereas some improvement is evident during training, offline memory consolidation processes that take place after the end of training play an important role in learning of linguistic information. The timing of offline consolidation is thought to depend on the type of task, with generalization of implicit knowledge suggested to take more time and sleep to consolidate. The current study aims to investigate individual differences in the timing of consolidation following learning of morphological inflections in a novel language in typical adults. Participants learned to make plural inflections in an artificial language, where inflection was based on morpho-phonological regularities. Participants were trained in the evening, and consolidation was measured after two intervals: 12 h (one night) and 36 h (two nights) post training. We measured both inflection of trained items, which may rely on item-specific learning, and generalization to new untrained items, which requires extraction of morpho-phonological regularities. The results for both trained and un-trained items showed two patterns of consolidation: early versus late, that is while some participants improved during the first night, others, who deteriorated in performance during the first night, improved in the later consolidation interval. Importantly, phonological awareness in L1 predicted early consolidation for trained items. Furthermore, there was no association between participants' consolidation trajectory in trained and untrained items. Our results suggest that consolidation timing depends on the interaction between task characteristics and individual abilities. Moreover, the results show that prior meta-linguistic knowledge predicts the quality of early consolidation processes. These results are consistent with studies in rodents and humans, showing that prior knowledge accelerates consolidation of newly learnt episodic memory. Finally, the rate of consolidation across exposures to the language might explain some of the variability found in the attained level of second language proficiency.
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Affiliation(s)
- Dafna Ben Zion
- Department of Learning Disabilities, University of Haifa, Haifa, Israel
- Edmond J. Safra Brain Research Center for the Study of Learning Disabilities, University of Haifa, Haifa, Israel
- The Language and Brain Plasticity Lab, Institute of Information Processing and Decision Making, University of Haifa, Haifa, Israel
| | - Michael Nevat
- The Language and Brain Plasticity Lab, Institute of Information Processing and Decision Making, University of Haifa, Haifa, Israel
| | - Anat Prior
- Department of Learning Disabilities, University of Haifa, Haifa, Israel
- Edmond J. Safra Brain Research Center for the Study of Learning Disabilities, University of Haifa, Haifa, Israel
| | - Tali Bitan
- The Language and Brain Plasticity Lab, Institute of Information Processing and Decision Making, University of Haifa, Haifa, Israel
- Department of Psychology, University of Haifa, Haifa, Israel
- Department of Speech Language Pathology, University of Toronto, Toronto, ON, Canada
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113
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Kobayashi R, Maruoka J, Norimoto H, Ikegaya Y, Kume K, Ohsawa M. Involvement of l-lactate in hippocampal dysfunction of type I diabetes. J Pharmacol Sci 2019; 141:79-82. [PMID: 31586517 DOI: 10.1016/j.jphs.2019.09.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Revised: 08/26/2019] [Accepted: 09/03/2019] [Indexed: 11/27/2022] Open
Abstract
Hippocampal neurons play a crucial role in memory formation. Accumulating evidence raises the possibility that hippocampal sharp-wave ripples (SW-Rs) are involved in memory consolidation. Here, we examined in an animal model of diabetes and found the amplitude of SW-Rs in diabetic mice were smaller than control group and were rescued by acute application of l-lactate, a major neural energy source. The cognitive impairment in diabetic mice was alleviated by intracerebroventricular l-lactate treatment. Our results suggested that l-lactate is important for hippocampal dysfunction in diabetes.
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Affiliation(s)
- Riho Kobayashi
- Department of Neuropharmacology, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya, Japan
| | - Junya Maruoka
- Department of Neuropharmacology, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya, Japan
| | - Hiroaki Norimoto
- Laboratory of Chemical Pharmacology, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo, Japan
| | - Yuji Ikegaya
- Laboratory of Chemical Pharmacology, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo, Japan
| | - Kazuhiko Kume
- Department of Neuropharmacology, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya, Japan
| | - Masahiro Ohsawa
- Department of Neuropharmacology, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya, Japan.
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114
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Klinzing JG, Niethard N, Born J. Mechanisms of systems memory consolidation during sleep. Nat Neurosci 2019; 22:1598-1610. [PMID: 31451802 DOI: 10.1038/s41593-019-0467-3] [Citation(s) in RCA: 462] [Impact Index Per Article: 92.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Accepted: 07/12/2019] [Indexed: 02/06/2023]
Abstract
Long-term memory formation is a major function of sleep. Based on evidence from neurophysiological and behavioral studies mainly in humans and rodents, we consider the formation of long-term memory during sleep as an active systems consolidation process that is embedded in a process of global synaptic downscaling. Repeated neuronal replay of representations originating from the hippocampus during slow-wave sleep leads to a gradual transformation and integration of representations in neocortical networks. We highlight three features of this process: (i) hippocampal replay that, by capturing episodic memory aspects, drives consolidation of both hippocampus-dependent and non-hippocampus-dependent memory; (ii) brain oscillations hallmarking slow-wave and rapid-eye movement sleep that provide mechanisms for regulating both information flow across distant brain networks and local synaptic plasticity; and (iii) qualitative transformations of memories during systems consolidation resulting in abstracted, gist-like representations.
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Affiliation(s)
- Jens G Klinzing
- Institute of Medical Psychology and Behavioral Neurobiology, University of Tübingen, Tübingen, Germany.,Center for Integrative Neuroscience, University of Tübingen, Tübingen, Germany
| | - Niels Niethard
- Institute of Medical Psychology and Behavioral Neurobiology, University of Tübingen, Tübingen, Germany
| | - Jan Born
- Institute of Medical Psychology and Behavioral Neurobiology, University of Tübingen, Tübingen, Germany. .,Center for Integrative Neuroscience, University of Tübingen, Tübingen, Germany.
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115
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Xia E, Xu F, Hu C, Kumal JPP, Tang X, Mao D, Li Y, Wu D, Zhang R, Wu S, Sun L. Young Blood Rescues the Cognition of Alzheimer's Model Mice by Restoring the Hippocampal Cholinergic Circuit. Neuroscience 2019; 417:57-69. [PMID: 31404586 DOI: 10.1016/j.neuroscience.2019.08.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 08/01/2019] [Accepted: 08/05/2019] [Indexed: 01/10/2023]
Abstract
An increasing number of studies have demonstrated the benefits of young individual-derived blood for aging-related diseases. However, the effects of young blood on the cognitive and cholinergic transmission defects in aging-associated Alzheimer's disease (AD) remain elusive. In the current study, we showed that young blood serum delivered intravenously attenuated deficits in hippocampal-dependent learning and memory, alleviated hippocampal Aβ plaque pathology, restored synapse formation and synaptic plasticity, repaired the hippocampal cholinergic circuit, and triggered several canonical neuroprotective mechanisms [including repressor element 1-silencing transcription factor (REST)/Forkhead box protein O1 (FOXO1) signaling] in aged AD model mice. However, pharmacological blockage of hippocampal cholinergic activity nearly abrogated the neuroprotective actions of young blood serum in AD mice. Thus, our findings suggest that exogenous young blood serum exerts therapeutic effects on AD-associated cognitive disorders and pathology by promoting hippocampal cholinergic input and simultaneously activating other neuroprotective mechanisms.
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Affiliation(s)
- Endi Xia
- Department of Thoracic Surgery, Fourth Affiliated Hospital of Harbin Medical University, Harbin 150001, Heilongjiang, China
| | - Fengyan Xu
- Department of Human Anatomy, Harbin Medical University, Harbin 150081, Heilongjiang, China; Key Laboratory of Preservation of Human Genetic Resources and Disease Control in China (Harbin Medical University), Ministry of Education, China
| | - Changbin Hu
- Department of Neurology, Second Affiliated Hospital of Harbin Medical University, Harbin 150001, Heilongjiang, China
| | - Jay Prakash Prasad Kumal
- Department of Human Anatomy, Harbin Medical University, Harbin 150081, Heilongjiang, China; Key Laboratory of Preservation of Human Genetic Resources and Disease Control in China (Harbin Medical University), Ministry of Education, China
| | - Xudong Tang
- Department of Human Anatomy, Harbin Medical University, Harbin 150081, Heilongjiang, China; Key Laboratory of Preservation of Human Genetic Resources and Disease Control in China (Harbin Medical University), Ministry of Education, China
| | - Dongsheng Mao
- Department of Human Anatomy, Harbin Medical University, Harbin 150081, Heilongjiang, China; Key Laboratory of Preservation of Human Genetic Resources and Disease Control in China (Harbin Medical University), Ministry of Education, China
| | - Yixuan Li
- Department of Human Anatomy, Harbin Medical University, Harbin 150081, Heilongjiang, China; Key Laboratory of Preservation of Human Genetic Resources and Disease Control in China (Harbin Medical University), Ministry of Education, China
| | - Di Wu
- Department of Neurology, Fourth Affiliated Hospital of Harbin Medical University, Harbin 150001, Heilongjiang, China
| | - Rui Zhang
- Department of Andrology, Second Affiliated Hospital of Heilongjiang University of Chinese Medicine, Harbin 150001, Heilongjiang, China.
| | - Shuliang Wu
- Department of Human Anatomy, Harbin Medical University, Harbin 150081, Heilongjiang, China; Key Laboratory of Preservation of Human Genetic Resources and Disease Control in China (Harbin Medical University), Ministry of Education, China.
| | - Liang Sun
- Department of Human Anatomy, Harbin Medical University, Harbin 150081, Heilongjiang, China; Key Laboratory of Preservation of Human Genetic Resources and Disease Control in China (Harbin Medical University), Ministry of Education, China.
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116
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Lutz ND, Born J. Sleep to make more of your memories: Decoding hidden rules from encoded information. Sleep Med Rev 2019; 47:122-124. [PMID: 31447252 DOI: 10.1016/j.smrv.2019.07.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Accepted: 07/31/2019] [Indexed: 11/24/2022]
Affiliation(s)
- Nicolas D Lutz
- Institute of Medical Psychology and Behavioral Neurobiology, University of Tübingen, Otfried-Müller-Straße 25, 72076, Tübingen, Germany.
| | - Jan Born
- Institute of Medical Psychology and Behavioral Neurobiology, University of Tübingen, Otfried-Müller-Straße 25, 72076, Tübingen, Germany.
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117
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Sleep Matters: CD4 + T Cell Memory Formation and the Central Nervous System. Trends Immunol 2019; 40:674-686. [PMID: 31262652 DOI: 10.1016/j.it.2019.06.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Revised: 06/05/2019] [Accepted: 06/05/2019] [Indexed: 11/23/2022]
Abstract
The mechanisms of CD4+ T-cell memory formation in the immune system are debated. With the well-established concept of memory formation in the central nervous system (CNS), we propose that formation of CD4+ T-cell memory depends on the interaction of two different cell systems handling two types of stored information. First, information about antigen (event) and challenge (context) is taken up by antigen-presenting cells, as initial storage. Second, event and context information is transferred to CD4+ T cells. During activation, two categories of CD4+ T cell develop: effector CD4+ T cells, carrying event and context information, enabling them to efficiently focus their response to tissues under attack; and persisting CD4+ T cells, providing context-independent antigen-specific memories and long-term storage. This novel hypothesis is supported by the observation that mammalian sleep can improve both CNS and CD4+ T-cell memory.
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118
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Schapiro AC, Reid AG, Morgan A, Manoach DS, Verfaellie M, Stickgold R. The hippocampus is necessary for the consolidation of a task that does not require the hippocampus for initial learning. Hippocampus 2019; 29:1091-1100. [PMID: 31157946 DOI: 10.1002/hipo.23101] [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: 02/08/2019] [Revised: 04/02/2019] [Accepted: 04/29/2019] [Indexed: 11/09/2022]
Abstract
During sleep, the hippocampus plays an active role in consolidating memories that depend on it for initial encoding. There are hints in the literature that the hippocampus may have a broader influence, contributing to the consolidation of memories that may not initially require the area. We tested this possibility by evaluating learning and consolidation of the motor sequence task (MST) in hippocampal amnesics and demographically matched control participants. While the groups showed similar initial learning, only controls exhibited evidence of overnight consolidation. These results demonstrate that the hippocampus can be required for normal consolidation of a task without being required for its acquisition, suggesting that the area plays a broader role in coordinating memory consolidation than has previously been assumed.
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Affiliation(s)
- Anna C Schapiro
- Department of Psychiatry, Beth Israel Deaconess Medical Center, Boston, Massachusetts.,Harvard Medical School, Boston, Massachusetts.,Department of Psychology, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Allison G Reid
- Memory Disorders Research Center, VA Boston Healthcare System, Boston, Massachusetts
| | - Alexandra Morgan
- Department of Psychiatry, Beth Israel Deaconess Medical Center, Boston, Massachusetts
| | - Dara S Manoach
- Harvard Medical School, Boston, Massachusetts.,Department of Psychiatry, Massachusetts General Hospital, Charlestown, Massachusetts.,Athinoula A. Martinos Center for Biomedical Imaging, Charlestown, Massachusetts
| | - Mieke Verfaellie
- Memory Disorders Research Center, VA Boston Healthcare System, Boston, Massachusetts.,Department of Psychiatry, Boston University School of Medicine, Boston, Massachusetts
| | - Robert Stickgold
- Department of Psychiatry, Beth Israel Deaconess Medical Center, Boston, Massachusetts.,Harvard Medical School, Boston, Massachusetts
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119
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Yonelinas AP, Ranganath C, Ekstrom AD, Wiltgen BJ. A contextual binding theory of episodic memory: systems consolidation reconsidered. Nat Rev Neurosci 2019; 20:364-375. [PMID: 30872808 PMCID: PMC7233541 DOI: 10.1038/s41583-019-0150-4] [Citation(s) in RCA: 198] [Impact Index Per Article: 39.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Episodic memory reflects the ability to recollect the temporal and spatial context of past experiences. Episodic memories depend on the hippocampus but have been proposed to undergo rapid forgetting unless consolidated during offline periods such as sleep to neocortical areas for long-term storage. Here, we propose an alternative to this standard systems consolidation theory (SSCT) - a contextual binding account - in which the hippocampus binds item-related and context-related information. We compare these accounts in light of behavioural, lesion, neuroimaging and sleep studies of episodic memory and contend that forgetting is largely due to contextual interference, episodic memory remains dependent on the hippocampus across time, contextual drift produces post-encoding activity and sleep benefits memory by reducing contextual interference.
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Affiliation(s)
| | - Charan Ranganath
- Center for Neuroscience, University of California, Davis, CA, USA
| | - Arne D Ekstrom
- Department of Psychology, University of Arizona, Tucson, AZ, USA
| | - Brian J Wiltgen
- Center for Neuroscience, University of California, Davis, CA, USA
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120
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Csongová M, Renczés E, Šarayová V, Mihalovičová L, Janko J, Gurecká R, Troise AD, Vitaglione P, Šebeková K. Maternal Consumption of a Diet Rich in Maillard Reaction Products Accelerates Neurodevelopment in F1 and Sex-Dependently Affects Behavioral Phenotype in F2 Rat Offspring. Foods 2019; 8:foods8050168. [PMID: 31108957 PMCID: PMC6560437 DOI: 10.3390/foods8050168] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2019] [Revised: 05/13/2019] [Accepted: 05/14/2019] [Indexed: 12/21/2022] Open
Abstract
Thermal processing of foods at temperatures > 100 °C introduces considerable amounts of advanced glycation end-products (AGEs) into the diet. Maternal dietary exposure might affect the offspring early development and behavioral phenotype in later life. In a rat model, we examined the influence of maternal (F0) dietary challenge with AGEs-rich diet (AGE-RD) during puberty, pregnancy and lactation on early development, a manifestation of physiological reflexes, and behavioral phenotype of F1 and F2 offspring. Mean postnatal day of auditory conduit and eye opening, or incisor eruption was not affected by F0 diet significantly. F1 AGE-RD offspring outperformed their control counterparts in hind limb placing, in grasp tests and surface righting; grandsons of AGE-RD dams outperformed their control counterparts in hind limb placing and granddaughters in surface righting. In a Morris water maze, female AGE-RD F1 and F2 offspring presented better working memory compared with a control group of female offspring. Furthermore, male F2 AGE-RD offspring manifested anxiolysis-like behavior in a light dark test. Mean grooming time in response to sucrose splash did not differ between dietary groups. Our findings indicate that long-term maternal intake of AGE-RD intergenerationally and sex-specifically affects development and behavioral traits of offspring which have never come into direct contact with AGE-RD.
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Affiliation(s)
- Melinda Csongová
- Institute of Molecular Biomedicine, Medical Faculty, Comenius University, 81108 Bratislava, Slovakia.
| | - Emese Renczés
- Institute of Molecular Biomedicine, Medical Faculty, Comenius University, 81108 Bratislava, Slovakia.
| | - Veronika Šarayová
- Institute of Molecular Biomedicine, Medical Faculty, Comenius University, 81108 Bratislava, Slovakia.
- Department of Biology, Faculty of Medicine, Slovak Medical University, 83303 Bratislava, Slovakia.
| | - Lucia Mihalovičová
- Institute of Molecular Biomedicine, Medical Faculty, Comenius University, 81108 Bratislava, Slovakia.
| | - Jakub Janko
- Institute of Molecular Biomedicine, Medical Faculty, Comenius University, 81108 Bratislava, Slovakia.
| | - Radana Gurecká
- Institute of Molecular Biomedicine, Medical Faculty, Comenius University, 81108 Bratislava, Slovakia.
- Institute of Medical Physics, Biophysics, Informatics and Telemedicine, Faculty of Medicine, Comenius University, 81108 Bratislava, Slovakia.
| | - Antonio Dario Troise
- Department of Agricultural Sciences, University of Naples Federico II, 80055 Portici, Italy.
| | - Paola Vitaglione
- Department of Agricultural Sciences, University of Naples Federico II, 80055 Portici, Italy.
| | - Katarína Šebeková
- Institute of Molecular Biomedicine, Medical Faculty, Comenius University, 81108 Bratislava, Slovakia.
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121
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Van Zandt M, Weiss E, Almyasheva A, Lipior S, Maisel S, Naegele JR. Adeno-associated viral overexpression of neuroligin 2 in the mouse hippocampus enhances GABAergic synapses and impairs hippocampal-dependent behaviors. Behav Brain Res 2018; 362:7-20. [PMID: 30605713 DOI: 10.1016/j.bbr.2018.12.052] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Revised: 12/14/2018] [Accepted: 12/29/2018] [Indexed: 10/27/2022]
Abstract
The cell adhesion molecule neuroligin2 (NLGN2) regulates GABAergic synapse development, but its role in neural circuit function in the adult hippocampus is unclear. We investigated GABAergic synapses and hippocampus-dependent behaviors following viral-vector-mediated overexpression of NLGN2. Transducing hippocampal neurons with AAV-NLGN2 increased neuronal expression of NLGN2 and membrane localization of GABAergic postsynaptic proteins gephyrin and GABAARγ2, and presynaptic vesicular GABA transporter protein (VGAT) suggesting trans-synaptic enhancement of GABAergic synapses. In contrast, glutamatergic postsynaptic density protein-95 (PSD-95) and presynaptic vesicular glutamate transporter (VGLUT) protein were unaltered. Moreover, AAV-NLGN2 significantly increased parvalbumin immunoreactive (PV+) synaptic boutons co-localized with postsynaptic gephyrin+ puncta. Furthermore, these changes were demonstrated to lead to cognitive impairments as shown in a battery of hippocampal-dependent mnemonic tasks and social behaviors.
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Affiliation(s)
- M Van Zandt
- Wesleyan University, Department of Biology, Program in Neuroscience and Behavior, Middletown, CT, United States
| | - E Weiss
- Wesleyan University, Department of Biology, Program in Neuroscience and Behavior, Middletown, CT, United States
| | - A Almyasheva
- Wesleyan University, Department of Biology, Program in Neuroscience and Behavior, Middletown, CT, United States
| | - S Lipior
- Wesleyan University, Department of Biology, Program in Neuroscience and Behavior, Middletown, CT, United States
| | - S Maisel
- Wesleyan University, Department of Biology, Program in Neuroscience and Behavior, Middletown, CT, United States
| | - J R Naegele
- Wesleyan University, Department of Biology, Program in Neuroscience and Behavior, Middletown, CT, United States.
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122
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Lewis S. To sleep, to remember. Nat Rev Neurosci 2018; 20:3. [PMID: 30518963 DOI: 10.1038/s41583-018-0108-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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