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Wang X, Ren P, Baran TM, Raizada RDS, Mapstone M, Lin F. Longitudinal Functional Brain Mapping in Supernormals. Cereb Cortex 2020; 29:242-252. [PMID: 29186360 DOI: 10.1093/cercor/bhx322] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Accepted: 11/03/2017] [Indexed: 12/20/2022] Open
Abstract
Prevention of age-related cognitive decline is an increasingly important topic. Recently, increased attention is being directed at understanding biological models of successful cognitive aging. Here, we examined resting-state brain regional low-frequency oscillations using functional magnetic resonance imaging in 19 older adults with excellent cognitive abilities (Supernormals), 28 older adults with normative cognition, 57 older adults with amnestic mild cognitive impairment, and 26 with Alzheimer's disease. We identified a "Supernormal map", a set of regions whose oscillations were resistant to the aging-associated neurodegenerative process, including the right fusiform gyrus, right middle frontal gyrus, right anterior cingulate cortex, left middle temporal gyrus, left precentral gyrus, and left orbitofrontal cortex. The map was unique to the Supernormals, differentiated this group from cognitive average-ager comparisons, and predicted a 1-year change in global cognition (indexed by the Montreal Cognitive Assessment scores, adjusted R2 = 0.68). The map was also correlated to Alzheimer's pathophysiological features (beta-amyloid/pTau ratio, adjusted R2 = 0.66) in participants with and without cognitive impairment. These findings in phenotypically successful cognitive agers suggest a divergent pattern of brain regions that may either reflect inherent neural integrity that contributes to Supernormals' cognitive success, or alternatively indicate adaptive reorganization to the demands of aging.
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Affiliation(s)
- Xixi Wang
- Department of Biomedical Engineering, University of Rochester, Rochester, NY, USA
| | - Ping Ren
- School of Nursing, University of Rochester Medical Center, Rochester, NY, USA
| | - Timothy M Baran
- Department of Biomedical Engineering, University of Rochester, Rochester, NY, USA.,Department of Imaging Sciences, University of Rochester, Rochester, NY, USA
| | - Rajeev D S Raizada
- Department of Brain and Cognitive Sciences, University of Rochester, Rochester, NY, USA
| | - Mark Mapstone
- Department of Neurology, University of California-Irvine, Irvine, CA, USA
| | - Feng Lin
- School of Nursing, University of Rochester Medical Center, Rochester, NY, USA.,Department of Brain and Cognitive Sciences, University of Rochester, Rochester, NY, USA.,Department of Neuroscience, University of Rochester Medical Center, Rochester, NY, USA.,Department of Psychiatry, University of Rochester Medical Center, Rochester, NY, USA
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Morè L, Lauterborn JC, Papaleo F, Brambilla R. Enhancing cognition through pharmacological and environmental interventions: Examples from preclinical models of neurodevelopmental disorders. Neurosci Biobehav Rev 2020; 110:28-45. [PMID: 30981451 DOI: 10.1016/j.neubiorev.2019.02.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 02/04/2019] [Accepted: 02/05/2019] [Indexed: 12/29/2022]
Abstract
In this review we discuss the role of environmental and pharmacological treatments to enhance cognition with special regards to neurodevelopmental related disorders and aging. How the environment influences brain structure and function, and the interactions between rearing conditions and gene expression, are fundamental questions that are still poorly understood. We propose a model that can explain some of the discrepancies in findings for effects of environmental enrichment on outcome measures. Evidence of a direct causal correlation of nootropics and treatments that enhanced cognition also will be presented, and possible molecular mechanisms that include neurotrophin signaling and downstream pathways underlying these processes are discussed. Finally we review recent findings achieved with a wide set of behavioral and cognitive tasks that have translational validity to humans, and should be useful for future work on devising appropriate therapies. As will be discussed, the collective findings suggest that a combinational therapeutic approach of environmental enrichment and nootropics could be particularly successful for improving learning and memory in both developmental disorders and normal aging.
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Affiliation(s)
- Lorenzo Morè
- School of Pharmacy and Biomedical Sciences, University of Central Lancashire, PR1 2XT, Preston, UK.
| | - Julie C Lauterborn
- Department of Anatomy & Neurobiology, School of Medicine, University of California, Irvine, CA, 92617, USA.
| | - Francesco Papaleo
- Genetics of Cognition Laboratory, Istituto Italiano di Tecnologia, Via Morego, 30, 16163, Genova, Italy.
| | - Riccardo Brambilla
- Neuroscience and Mental Health Research Institute (NMHRI), Division of Neuroscience, School of Biosciences, Cardiff University, CF24 4HQ, Cardiff, UK.
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REN Y, XU Z, WANG T, YANG W. AGE-RELATED ALTERATIONS IN AUDIOVISUAL INTEGRATION: A BRIEF OVERVIEW. PSYCHOLOGIA 2020. [DOI: 10.2117/psysoc.2020-a002] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
- Yanna REN
- Guizhou University of Chinese Medicine
| | - Zhihan XU
- Okayama University
- Ningbo University of Technology
| | - Tao WANG
- Guizhou Light Industry Technical College
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Couth S, Poole D, Gowen E, Champion RA, Warren PA, Poliakoff E. The Effect of Ageing on Optimal Integration of Conflicting and Non-Conflicting Visual–Haptic Stimuli. Multisens Res 2019; 32:771-796. [DOI: 10.1163/22134808-20191409] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Accepted: 06/06/2019] [Indexed: 11/19/2022]
Abstract
Abstract
Multisensory integration typically follows the predictions of a statistically optimal model whereby the contribution of each sensory modality is weighted according to its reliability. Previous research has shown that multisensory integration is affected by ageing, however it is less certain whether older adults follow this statistically optimal model. Additionally, previous studies often present multisensory cues which are conflicting in size, shape or location, yet naturally occurring multisensory cues are usually non-conflicting. Therefore, the mechanisms of integration in older adults might differ depending on whether the multisensory cues are consistent or conflicting. In the current experiment, young () and older () adults were asked to make judgements regarding the height of wooden blocks using visual, haptic or combined visual–haptic information. Dual modality visual–haptic blocks could be presented as equal or conflicting in size. Young and older adults’ size discrimination thresholds (i.e., precision) were not significantly different for visual, haptic or visual–haptic cues. In addition, both young and older adults’ discrimination thresholds and points of subjective equality did not follow model predictions of optimal integration, for both conflicting and non-conflicting cues. Instead, there was considerable between subject variability as to how visual and haptic cues were processed when presented simultaneously. This finding has implications for the development of multisensory therapeutic aids and interventions to assist older adults with everyday activities, where these should be tailored to the needs of each individual.
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Affiliation(s)
- Samuel Couth
- 1Division of Human Communication, Development and Hearing, Faculty of Biology, Medicine and Health, University of Manchester, UK
| | - Daniel Poole
- 2Division of Neuroscience and Experimental Psychology, Faculty of Biology, Medicine and Health, University of Manchester, UK
| | - Emma Gowen
- 2Division of Neuroscience and Experimental Psychology, Faculty of Biology, Medicine and Health, University of Manchester, UK
| | - Rebecca A. Champion
- 2Division of Neuroscience and Experimental Psychology, Faculty of Biology, Medicine and Health, University of Manchester, UK
| | - Paul A. Warren
- 2Division of Neuroscience and Experimental Psychology, Faculty of Biology, Medicine and Health, University of Manchester, UK
| | - Ellen Poliakoff
- 2Division of Neuroscience and Experimental Psychology, Faculty of Biology, Medicine and Health, University of Manchester, UK
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Craighead DH, Heinbockel TC, Hamilton MN, Bailey EF, MacDonald MJ, Gibala MJ, Seals DR. Time-efficient physical training for enhancing cardiovascular function in midlife and older adults: promise and current research gaps. J Appl Physiol (1985) 2019; 127:1427-1440. [PMID: 31556835 PMCID: PMC10205162 DOI: 10.1152/japplphysiol.00381.2019] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Revised: 08/28/2019] [Accepted: 09/18/2019] [Indexed: 12/11/2022] Open
Abstract
Cardiovascular diseases (CVD) remain the leading cause of death in developed societies, and "midlife" (50-64 yr) and older (65+) men and women bear the great majority of the burden of CVD. Much of the increased risk of CVD in this population is attributable to CV dysfunction, including adverse changes in the structure and function of the heart, increased systolic blood pressure, and arterial dysfunction. The latter is characterized by increased arterial stiffness and vascular endothelial dysfunction. Conventional aerobic exercise training, as generally recommended in public health guidelines, is an effective strategy to preserve or improve CV function with aging. However, <40% of midlife and older adults meet aerobic exercise guidelines, due in part to time availability-related barriers. As such, there is a need to develop evidence-based time-efficient exercise interventions that promote adherence and optimize CV function in these groups. Two promising interventions that may meet these criteria are interval training and inspiratory muscle strength training (IMST). Limited research suggests these modes of training may improve CV function with time commitments of ≤60 min/wk. This review will summarize the current evidence for interval training and IMST to improve CV function in midlife/older adults and identify key research gaps and future directions.
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Affiliation(s)
- Daniel H Craighead
- Department of Integrative Physiology, University of Colorado Boulder, Boulder, Colorado
| | - Thomas C Heinbockel
- Department of Integrative Physiology, University of Colorado Boulder, Boulder, Colorado
| | - Makinzie N Hamilton
- Department of Integrative Physiology, University of Colorado Boulder, Boulder, Colorado
| | - E Fiona Bailey
- Department of Physiology, University of Arizona College of Medicine, Tucson, Arizona
| | | | - Martin J Gibala
- Department of Kinesiology, McMaster University, Ontario, Canada
| | - Douglas R Seals
- Department of Integrative Physiology, University of Colorado Boulder, Boulder, Colorado
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Tanaka N, Tsutsumi R, Shirota Y, Shimizu T, Ohminami S, Terao Y, Ugawa Y, Tsuji S, Hanajima R. Effects of L-DOPA on quadripulse magnetic stimulation-induced long-term potentiation in older adults. Neurobiol Aging 2019; 84:217-224. [PMID: 31570179 DOI: 10.1016/j.neurobiolaging.2019.08.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2018] [Revised: 07/03/2019] [Accepted: 08/06/2019] [Indexed: 11/18/2022]
Abstract
Reduced cortical plasticity has been previously reported in older adult as compared with young adults. However, the effects of dopamine on this plasticity reduction remain unknown. Here, we assessed the effects of high-dose (200 mg) and medium-dose (100 mg) L-3,4-dihydroxyphenylalanine (L-DOPA) intake on the long-term potentiation (LTP)-like effect induced by quadripulse magnetic stimulation (QPS) in older adults (aged ∼65 years). The subjects were 32 (200 mg) and 20 (100 mg) healthy older adult volunteers. This study was designed as a double-blind, crossover and placebo-controlled trial on one dose of L-dopa. Two hours after taking L-DOPA or placebo-drug, QPS was applied over the motor cortex. Motor evoked potentials were recorded to evaluate the motor cortical excitability changes. We found that both doses of L-DOPA enhanced LTP after QPS in older adults as one group. We classified subjects into QPS responders and QPS nonresponders. Both L-DOPA doses produced significant LTP enhancement in QPS nonresponders, whereas either of doses did not produce significant LTP enhancement in QPS responders. Collectively, our findings suggest that the neural plasticity reductions observed in older adults could be partly improved by dopamine.
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Affiliation(s)
- Nobuyuki Tanaka
- Department of Neurology, University of Tokyo Hospital, Bunkyo-ku, Tokyo, Japan
| | - Ryosuke Tsutsumi
- Department of Neurology, University of Tokyo Hospital, Bunkyo-ku, Tokyo, Japan
| | - Yuichiro Shirota
- Department of Neurology, University of Tokyo Hospital, Bunkyo-ku, Tokyo, Japan
| | - Takahiro Shimizu
- Department of Neurology, University of Tokyo Hospital, Bunkyo-ku, Tokyo, Japan
| | - Shinya Ohminami
- Department of Neurology, University of Tokyo Hospital, Bunkyo-ku, Tokyo, Japan
| | - Yasuo Terao
- Department of Neurology, University of Tokyo Hospital, Bunkyo-ku, Tokyo, Japan
| | - Yoshikazu Ugawa
- Department of Neurology, University of Tokyo Hospital, Bunkyo-ku, Tokyo, Japan
| | - Shoji Tsuji
- Department of Neurology, University of Tokyo Hospital, Bunkyo-ku, Tokyo, Japan
| | - Ritsuko Hanajima
- Department of Neurology, University of Tokyo Hospital, Bunkyo-ku, Tokyo, Japan.
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Estraneo A, De Bellis F, Masotta O, Loreto V, Fiorenza S, Lo Sapio M, Trojano L. Demographical and clinical indices for long-term evolution of patients in vegetative or in minimally conscious state. Brain Inj 2019; 33:1633-1639. [DOI: 10.1080/02699052.2019.1658220] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- A Estraneo
- Disorders of Consciousness Laboratory, Institute of Telese Terme, Maugeri Scientific and Clinical Institutes, IRCCS, Telese Terme (BN), Italy
- Department of Neurology, Santa Maria della Pietà General Hospital, Nola, Italy
| | - F De Bellis
- Disorders of Consciousness Laboratory, Institute of Telese Terme, Maugeri Scientific and Clinical Institutes, IRCCS, Telese Terme (BN), Italy
| | - O Masotta
- Disorders of Consciousness Laboratory, Institute of Telese Terme, Maugeri Scientific and Clinical Institutes, IRCCS, Telese Terme (BN), Italy
| | - V Loreto
- Disorders of Consciousness Laboratory, Institute of Telese Terme, Maugeri Scientific and Clinical Institutes, IRCCS, Telese Terme (BN), Italy
- Department of Neurology, Santa Maria della Pietà General Hospital, Nola, Italy
| | - S Fiorenza
- Disorders of Consciousness Laboratory, Institute of Telese Terme, Maugeri Scientific and Clinical Institutes, IRCCS, Telese Terme (BN), Italy
| | - M Lo Sapio
- Disorders of Consciousness Laboratory, Institute of Telese Terme, Maugeri Scientific and Clinical Institutes, IRCCS, Telese Terme (BN), Italy
| | - L Trojano
- Neuropsychology Lab., Department of Psychology, University of Campania 'Luigi Vanvitelli', Caserta, Italy
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D'Antonio J, Simon-Pearson L, Goldberg T, Sneed JR, Rushia S, Kerner N, Andrews H, Hellegers C, Tolbert S, Perea E, Petrella J, Doraiswamy PM, Devanand D. Cognitive training and neuroplasticity in mild cognitive impairment (COG-IT): protocol for a two-site, blinded, randomised, controlled treatment trial. BMJ Open 2019; 9:e028536. [PMID: 31471436 PMCID: PMC6720324 DOI: 10.1136/bmjopen-2018-028536] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Revised: 06/17/2019] [Accepted: 07/10/2019] [Indexed: 01/22/2023] Open
Abstract
INTRODUCTION Mild cognitive impairment (MCI) is common in older adults and represents a high-risk group for progression to Alzheimer's disease (AD). Medication trials in MCI have generally failed, but new discoveries with brain plasticity in ageing have led to the study of cognitive training as a potential treatment to improve cognitive abilities. Computerised cognitive training (CCT) involves computerised cognitive exercises that target specific cognitive abilities and neural networks to potentially improve cognitive functioning through neuroplasticity. METHODS AND ANALYSIS In a two-site study (New York State Psychiatric Institute/Columbia University Medical Center and Duke University Medical Center), we will randomise 100 patients with MCI (Wechsler Memory Scale-III Logical Memory II score 0-11; Folstein Mini Mental State Examination ≥23) to home-based CCT (suite of exercises: memory, matching, spatial recognition, processing speed) or a home-based active control condition (computerised crossword puzzle training (CPT)) with 12 weeks of intensive training followed by regular booster sessions up to 78 weeks. All patients will receive standard neuropsychological and functional assessments in clinic as well as structural/functional brain MRI scans at study entry and endpoint. We will test if CCT, versus CPT, leads to improved cognitive functioning, transfers to functional ability and tasks of everyday life and impacts hippocampal volume changes and changes in the default mode network of the brain measured by resting-state functional MRI. ETHICS AND DISSEMINATION The study will be conducted following ethics approval and written informed consent will be obtained from all subjects. Study results will be disseminated via publication, clinicaltrials.gov, media and conference presentations. This will be the first controlled long-term trial to evaluate the effects of home-based CCT versus computerised CPT on cognitive abilities and functional measures and neural outcomes as determined by MRI indices in patients with MCI. Positive results from trial may support further development of home-based CCT. TRIAL REGISTRATION NUMBER ClinicalTrials.gov identifier (NCT03205709).
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Affiliation(s)
- Jessica D'Antonio
- Division of Geriatric Psychiatry, New York State Psychiatric Institute, New York, New York, USA
| | - Laura Simon-Pearson
- Division of Geriatric Psychiatry, New York State Psychiatric Institute, New York, New York, USA
| | - Terry Goldberg
- Division of Geriatric Psychiatry, New York State Psychiatric Institute, New York, New York, USA
- Department of Psychiatry, Columbia University Medical Center, New York, New York, USA
| | - Joel R Sneed
- Division of Geriatric Psychiatry, New York State Psychiatric Institute, New York, New York, USA
- Department of Psychology, Queens College, City University of New York, Flushing, New York, USA
| | - Sara Rushia
- Department of Psychology, Queens College, City University of New York, Flushing, New York, USA
- Department of Psychology, The Graduate Center, City University of New York, New York, New York, USA
| | - Nancy Kerner
- Department of Psychiatry, Columbia University Medical Center, New York, New York, USA
| | - Howard Andrews
- Department of Biostatistics, Mailman School of Public Health, Columbia University Medical Center, New York, New York, USA
| | - Caroline Hellegers
- Department of Psychiatry, Duke University Medical Center, Durham, North Carolina, USA
| | - Sierra Tolbert
- Department of Psychiatry, Duke University Medical Center, Durham, North Carolina, USA
| | - Elena Perea
- Department of Psychiatry, Duke University Medical Center, Durham, North Carolina, USA
| | - Jeffrey Petrella
- Department of Radiology, Duke University Medical Center, Durham, North Carolina, USA
| | - P Murali Doraiswamy
- Department of Psychiatry, Duke University Medical Center, Durham, North Carolina, USA
| | - Davangere Devanand
- Division of Geriatric Psychiatry, New York State Psychiatric Institute, New York, New York, USA
- Department of Psychiatry, Columbia University Medical Center, New York, New York, USA
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Posttraining Alpha Transcranial Alternating Current Stimulation Impairs Motor Consolidation in Elderly People. Neural Plast 2019; 2019:2689790. [PMID: 31428143 PMCID: PMC6681583 DOI: 10.1155/2019/2689790] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Revised: 05/27/2019] [Accepted: 06/13/2019] [Indexed: 11/23/2022] Open
Abstract
The retention of a new sequential motor skill relies on repeated practice and subsequent consolidation in the absence of active skill practice. While the early phase of skill acquisition remains relatively unaffected in older adults, posttraining consolidation appears to be selectively impaired by advancing age. Motor learning is associated with posttraining changes of oscillatory alpha and beta neuronal activities in the motor cortex. However, whether or not these oscillatory dynamics relate to posttraining consolidation and how they relate to the age-specific impairment of motor consolidation in older adults remains elusive. Transcranial alternating current stimulation (tACS) is a noninvasive brain stimulation technique capable of modulating such neuronal oscillations. Here, we examined whether tACS targeting M1 immediately following explicit motor sequence training is capable of modulating motor skill consolidation in older adults. In two sets of double-blind, sham-controlled experiments, tACS targeting left M1 was applied at either 10 Hz (alpha-tACS) or 20 Hz (beta-tACS) immediately after termination of a motor sequence training with the right (dominant) hand. Task performance was retested after an interval of 6 hours to assess consolidation of the training-acquired skill. EEG was recorded over left M1 to be able to detect local after-effects on oscillatory activity induced by tACS. Relative to the sham intervention, consolidation was selectively disrupted by posttraining alpha-tACS of M1, while posttraining beta-tACS of M1 had no effect on delayed retest performance compared to the sham intervention. No significant postinterventional changes of oscillatory activity in M1 were detected following alpha-tACS or beta-tACS. Our findings point to a frequency-specific interaction of tACS with posttraining motor memory processing and may suggest an inhibitory role of immediate posttraining alpha oscillations in M1 with respect to motor consolidation in healthy older adults.
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van den Noort M, Vermeire K, Bosch P, Staudte H, Krajenbrink T, Jaswetz L, Struys E, Yeo S, Barisch P, Perriard B, Lee SH, Lim S. A Systematic Review on the Possible Relationship Between Bilingualism, Cognitive Decline, and the Onset of Dementia. Behav Sci (Basel) 2019; 9:E81. [PMID: 31340609 PMCID: PMC6680432 DOI: 10.3390/bs9070081] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Revised: 07/17/2019] [Accepted: 07/18/2019] [Indexed: 12/20/2022] Open
Abstract
A systematic review was conducted to investigate whether bilingualism has a protective effect against cognitive decline in aging and can protect against dementia. We searched the Medline, ScienceDirect, Scopus, and ERIC databases with a cut-off date of 31 March, 2019, thereby following the guidelines of the Preferred Reporting Items for Systematic Reviews and Meta-analysis (PRISMA) protocol. Our search resulted in 34 eligible studies. Mixed results were found with respect to the protective effect of bilingualism against cognitive decline. Several studies showed a protective effect whereas other studies failed to find it. Moreover, evidence for a delay of the onset of dementia of between 4 and 5.5 years in bilingual individuals compared to monolinguals was found in several studies, but not in all. Methodological differences in the set-up of the studies seem to explain these mixed results. Lifelong bilingualism is a complex individual process, and many factors seem to influence this and need to be further investigated. This can be best achieved through large longitudinal studies with objective behavioral and neuroimaging measurements. In conclusion, although some evidence was found for a cognitive reserve-enhancing effect of lifelong bilingualism and protection against dementia, to date, no firm conclusions can be drawn.
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Affiliation(s)
- Maurits van den Noort
- Research Group of Pain and Neuroscience, Kyung Hee University, Seoul 130-701, Korea.
- Brussels Institute for Applied Linguistics, Vrije Universiteit Brussel, Brussels 1050, Belgium.
| | - Katrien Vermeire
- Department of Communication Sciences and Disorders, Long Island University (LIU) Brooklyn, Brooklyn, NY 11201, USA
| | - Peggy Bosch
- Psychiatric Research Group, LVR-Klinik Bedburg-Hau, 47511 Bedburg-Hau, Germany
- Donders Institute for Brain, Cognition, and Behaviour, Radboud University, 6525 Nijmegen, The Netherlands
| | - Heike Staudte
- Psychiatric Research Group, LVR-Klinik Bedburg-Hau, 47511 Bedburg-Hau, Germany
| | - Trudy Krajenbrink
- Department of Medicine, Neurology, University of Fribourg, 1700 Fribourg, Switzerland
| | - Lars Jaswetz
- Behavioural Science Institute, Radboud University, 6525 Nijmegen, The Netherlands
| | - Esli Struys
- Brussels Institute for Applied Linguistics, Vrije Universiteit Brussel, Brussels 1050, Belgium
| | - Sujung Yeo
- College of Oriental Medicine, Sang Ji University, Wonju 26339, Korea
| | - Pia Barisch
- Department of Psychology, Ruhr University Bochum, 44801 Bochum, Germany
| | - Benoît Perriard
- Department of Medicine, Neurology, University of Fribourg, 1700 Fribourg, Switzerland
| | - Sook-Hyun Lee
- Research Group of Pain and Neuroscience, Kyung Hee University, Seoul 130-701, Korea
| | - Sabina Lim
- Research Group of Pain and Neuroscience, Kyung Hee University, Seoul 130-701, Korea.
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Effects of Anserine/Carnosine Supplementation on Mild Cognitive Impairment with APOE4. Nutrients 2019; 11:nu11071626. [PMID: 31319510 PMCID: PMC6683059 DOI: 10.3390/nu11071626] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Revised: 07/12/2019] [Accepted: 07/15/2019] [Indexed: 11/30/2022] Open
Abstract
Background: Oral supplementation of anserine/carnosine helps preserve cognitive functions in healthy older adults. Mild cognitive impairment (MCI) is a transition between cognitive-normal and dementia. Therefore, it needs to investigate whether anserine/carnosine supplementation (ACS) has effects on subjects with MCI. Methods: A randomized, double-blind, placebo-controlled 12-week trial was performed. Fifty-four subjects with MCI were randomized to an active group ingesting 750 mg of anserine and 250 mg of carnosine per day or a placebo (1:1). Evaluation of cognitive change was conducted utilizing a psychometric test battery. Results: The score improvement in the global Clinical Dementia Rating (gloCDR) was superior in the active group than placebo (p = 0.023). No beneficial effect in the active group was detected in the other psychometric tests including the Mini-Mental State Examination (MMSE), the Wechsler Memory Scale, and the Alzheimer’s Disease Assessment Scale (ADAS). When APOE4 positive (APOE4 (+)) or negative (APOE4 (-)) subjects were separately analyzed, beneficial change in the APOE4 (+) subjects was observed in MMSE (p = 0.025) as well as in gloCDR (p = 0.026). Conclusions: The present study might suggest that protective effects against cognitive decline in APOE4 (+) MCI subjects exist.
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Transcranial direct current stimulation applied after encoding facilitates episodic memory consolidation in older adults. Neurobiol Learn Mem 2019; 163:107037. [PMID: 31202902 DOI: 10.1016/j.nlm.2019.107037] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Revised: 06/03/2019] [Accepted: 06/12/2019] [Indexed: 02/04/2023]
Abstract
Episodic memory shows the largest degree of age-related memory decline. There is evidence that consolidation, the process that stabilizes memories after encoding, is reduced in older adults. Previous studies have shown that transcranial direct current stimulation (tDCS) applied during intentional encoding or immediately after a contextual reminder enhanced delayed episodic memory performance, suggesting a potential interaction between tDCS and consolidation or reconsolidation processes. The present randomized, double-blind, sham-controlled study addressed the question whether tDCS applied immediately after verbal encoding enhances episodic memory recall through consolidation in healthy older adults. Twenty-eight participants received tDCS (Active or Sham) over the prefrontal cortex (anode over the left dorsolateral prefrontal cortex and cathode over the contralateral supraorbital region), a brain region contributing to episodic memory function. Verbal recall was tested two days and one month later. The results showed that recall performance at one month was enhanced in the Active tDCS group relative to the Sham group. These findings suggest that tDCS applied off-line immediately after encoding over the prefrontal cortex interacts with the processes promoting consolidation of episodic memories in healthy older adults. Targeting consolidation by means of tDCS might be a novel strategy for reducing episodic memory decline.
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Exel J, Mateus N, Gonçalves B, Abrantes C, Calleja-González J, Sampaio J. Entropy Measures Can Add Novel Information to Reveal How Runners' Heart Rate and Speed Are Regulated by Different Environments. Front Psychol 2019; 10:1278. [PMID: 31214084 PMCID: PMC6558111 DOI: 10.3389/fpsyg.2019.01278] [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: 02/21/2019] [Accepted: 05/15/2019] [Indexed: 11/13/2022] Open
Abstract
Ecological psychology suggests performer-environment relationship is the appropriate scale for examining the relationship between perception, action and cognition. Developing performance requires variation in practice in order to design the attractor-fluctuation landscape. The present study aimed to identify the effects of varying levels of familiarity and sensorimotor stimuli within the environment in runners' speed and heart rate (HR) regularity degree, and short-term memory Twelve amateur runners accomplished three 45-min running trials in their usual route, in an unusual route, and an athletics 400-m track, wearing a GPS and an HR monitor. Sample entropy (SampEn) and complexity index (CI), over speed and HR, were calculated. Pre and post-trial, participants performed the Backward Digit Span task for cognitive assessment. Higher entropies were found for the 400-m track, compared to the usual and unusual routes. Usual routes increased speed SampEn (63% of chances), but decreased HR CI when compared to unusual routes (60% of chances). Runners showed higher overall short-term memory performance after unusual routes, when compared to usual routes (85% of chances), indicating positive relation to attentional control. The contexts of practice may contribute to change predictability from single to multiple timescales. Thus, by considering that time structuring issues can help diagnosing habituation of training routes, this study brings novel information to the long-term process of training.
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Affiliation(s)
- Juliana Exel
- Creative Lab Research Community, Research Center in Sports Sciences, Health Sciences and Human Development, CIDESD, University of Trás-os-Montes and Alto Douro, Vila Real, Portugal
| | - Nuno Mateus
- Creative Lab Research Community, Research Center in Sports Sciences, Health Sciences and Human Development, CIDESD, University of Trás-os-Montes and Alto Douro, Vila Real, Portugal
| | - Bruno Gonçalves
- Creative Lab Research Community, Research Center in Sports Sciences, Health Sciences and Human Development, CIDESD, University of Trás-os-Montes and Alto Douro, Vila Real, Portugal
| | - Catarina Abrantes
- Geron Research Community, Research Center in Sports Sciences, Health Sciences and Human Development, CIDESD, University of Trás-os-Montes and Alto Douro, Vila Real, Portugal
| | - Julio Calleja-González
- Department of Physical Education and Sports, University of the Basque Country (UPV-EHU), Bilbao, Spain
| | - Jaime Sampaio
- Creative Lab Research Community, Research Center in Sports Sciences, Health Sciences and Human Development, CIDESD, University of Trás-os-Montes and Alto Douro, Vila Real, Portugal
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64
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Tang Y, Xing Y, Zhu Z, He Y, Li F, Yang J, Liu Q, Li F, Teipel SJ, Zhao G, Jia J. The effects of 7‐week cognitive training in patients with vascular cognitive impairment, no dementia (the Cog‐VACCINE study): A randomized controlled trial. Alzheimers Dement 2019; 15:605-614. [DOI: 10.1016/j.jalz.2019.01.009] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2018] [Revised: 12/26/2018] [Accepted: 01/09/2019] [Indexed: 10/27/2022]
Affiliation(s)
- Yi Tang
- Department of NeurologyXuanwu HospitalCapital Medical UniversityBeijingChina
- Innovation Center for Neurological DisordersXuanwu HospitalCapital Medical UniversityBeijingChina
- Key Laboratory of Neurodegenerative DiseasesMinistry of Education of the People's Republic of ChinaBeijingChina
| | - Yi Xing
- Department of NeurologyXuanwu HospitalCapital Medical UniversityBeijingChina
- Innovation Center for Neurological DisordersXuanwu HospitalCapital Medical UniversityBeijingChina
- Key Laboratory of Neurodegenerative DiseasesMinistry of Education of the People's Republic of ChinaBeijingChina
| | - Zude Zhu
- Collaborative Innovation Center for Language AbilityJiangsu Normal UniversityXuzhouChina
| | - Yong He
- State Key Laboratory of Cognitive Neuroscience and LearningBeijingChina
- Beijing Key Laboratory of Brain Imaging and ConnectomicsBeijingChina
- IDG/McGovern Institute for Brain ResearchBeijing Normal UniversityBeijingChina
| | - Fang Li
- Department of GeriatricFu Xing HospitalCapital Medical UniversityBeijingChina
| | - Jianwei Yang
- Department of NeurologyXuanwu HospitalCapital Medical UniversityBeijingChina
- Innovation Center for Neurological DisordersXuanwu HospitalCapital Medical UniversityBeijingChina
- Key Laboratory of Neurodegenerative DiseasesMinistry of Education of the People's Republic of ChinaBeijingChina
| | - Qing Liu
- Department of NeurologyXuanwu HospitalCapital Medical UniversityBeijingChina
- Innovation Center for Neurological DisordersXuanwu HospitalCapital Medical UniversityBeijingChina
| | - Fangyu Li
- Department of NeurologyXuanwu HospitalCapital Medical UniversityBeijingChina
- Innovation Center for Neurological DisordersXuanwu HospitalCapital Medical UniversityBeijingChina
- Key Laboratory of Neurodegenerative DiseasesMinistry of Education of the People's Republic of ChinaBeijingChina
| | - Stefan J. Teipel
- Department of Psychosomatic MedicineUniversity Medicine RostockRostockGermany
- DZNEGerman Center for Neurodegenerative DiseasesRostockGermany
| | - Guoguang Zhao
- Department of NeurosurgeryXuanwu HospitalCapital Medical UniversityBeijingChina
| | - Jianping Jia
- Department of NeurologyXuanwu HospitalCapital Medical UniversityBeijingChina
- Innovation Center for Neurological DisordersXuanwu HospitalCapital Medical UniversityBeijingChina
- Key Laboratory of Neurodegenerative DiseasesMinistry of Education of the People's Republic of ChinaBeijingChina
- Center of Alzheimer's DiseaseBeijing Institute for Brain DisordersBeijingChina
- Beijing Key Laboratory of Geriatric Cognitive DisordersBeijingChina
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65
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Zhang H, Wang Z, Wang J, Lyu X, Wang X, Liu Y, Zeng X, Yuan H, Wang H, Yu X. Computerized multi-domain cognitive training reduces brain atrophy in patients with amnestic mild cognitive impairment. Transl Psychiatry 2019; 9:48. [PMID: 30705261 PMCID: PMC6355814 DOI: 10.1038/s41398-019-0385-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Revised: 10/26/2018] [Accepted: 01/01/2019] [Indexed: 01/23/2023] Open
Abstract
The present study aimed to explore the effect of computerized multi-domain cognitive training (MDCT) on brain gray matter volume and neuropsychological performance in patients with amnestic mild cognitive impairment (amnestic MCI). Twenty-one patients with amnestic MCI participated in a computerized MDCT program. The program targeted a broad set of cognitive domains via programs focused on reasoning, memory, visuospatial, language, calculation, and attention. Seventeen Participants completed the intervention and all completed a battery of neuropsychological tests to evaluate cognitive function while 12 out of 17 underwent 3 T MRI scanning before and after the intervention to measure gray matter (GM) volume. We examined correlations between the changes in neuropsychological scores and GM volumes across participants after the intervention. After training, we observed significant increases in GM volume in the right angular gyrus (AG) and other parietal subareas near the intraparietal sulcus (p < 0.05, FWE-corrected, 10000 permutations). However, we found no significant changes in neuropsychological test scores (p > 0.05). A correlation analysis revealed positive correlations between the changes in GM volume in the right AG and scores in the immediate recall component of the Hopkins Verbal Learning Test-Revised (HVLT-R) (r = 0.64, p = 0.024) and the Brief Visuospatial Memory Test-Revised (BVMT-R) (r = 0.67, p = 0.016). Our findings indicate that a computerized MDCT program may protect patients with amnestic MCI against brain GM volume loss and has potential in preserving general cognition. Thus, our non-pharmacological intervention may slow the rate of disease progression.
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Affiliation(s)
- Haifeng Zhang
- 0000 0001 2256 9319grid.11135.37Peking University Institute of Mental Health (Sixth Hospital), Beijing, 100191 China ,0000 0001 2256 9319grid.11135.37National Clinical Research Center for Mental Disorders & Key Laboratory of Mental Health, Ministry of Health, Peking University, Beijing, 100191 China ,Beijing Municipal Key Laboratory for Translational Research on Diagnosis and Treatment of Dementia, Beijing, 100191 China
| | - Zhijiang Wang
- Peking University Institute of Mental Health (Sixth Hospital), Beijing, 100191, China. .,National Clinical Research Center for Mental Disorders & Key Laboratory of Mental Health, Ministry of Health, Peking University, Beijing, 100191, China. .,Beijing Municipal Key Laboratory for Translational Research on Diagnosis and Treatment of Dementia, Beijing, 100191, China.
| | - Jing Wang
- 0000 0001 2256 9319grid.11135.37Peking University Institute of Mental Health (Sixth Hospital), Beijing, 100191 China ,0000 0001 2256 9319grid.11135.37National Clinical Research Center for Mental Disorders & Key Laboratory of Mental Health, Ministry of Health, Peking University, Beijing, 100191 China ,Beijing Municipal Key Laboratory for Translational Research on Diagnosis and Treatment of Dementia, Beijing, 100191 China
| | - Xiaozhen Lyu
- 0000 0001 2256 9319grid.11135.37Peking University Institute of Mental Health (Sixth Hospital), Beijing, 100191 China ,0000 0001 2256 9319grid.11135.37National Clinical Research Center for Mental Disorders & Key Laboratory of Mental Health, Ministry of Health, Peking University, Beijing, 100191 China ,Beijing Municipal Key Laboratory for Translational Research on Diagnosis and Treatment of Dementia, Beijing, 100191 China
| | - Xiao Wang
- 0000 0001 2256 9319grid.11135.37Peking University Institute of Mental Health (Sixth Hospital), Beijing, 100191 China ,0000 0001 2256 9319grid.11135.37National Clinical Research Center for Mental Disorders & Key Laboratory of Mental Health, Ministry of Health, Peking University, Beijing, 100191 China ,Beijing Municipal Key Laboratory for Translational Research on Diagnosis and Treatment of Dementia, Beijing, 100191 China
| | - Ying Liu
- 0000 0004 0605 3760grid.411642.4Peking University Third Hospital, Beijing, 100191 China
| | - Xiangzhu Zeng
- 0000 0004 0605 3760grid.411642.4Peking University Third Hospital, Beijing, 100191 China
| | - Huishu Yuan
- 0000 0004 0605 3760grid.411642.4Peking University Third Hospital, Beijing, 100191 China
| | - Huali Wang
- Peking University Institute of Mental Health (Sixth Hospital), Beijing, 100191, China. .,National Clinical Research Center for Mental Disorders & Key Laboratory of Mental Health, Ministry of Health, Peking University, Beijing, 100191, China. .,Beijing Municipal Key Laboratory for Translational Research on Diagnosis and Treatment of Dementia, Beijing, 100191, China.
| | - Xin Yu
- 0000 0001 2256 9319grid.11135.37Peking University Institute of Mental Health (Sixth Hospital), Beijing, 100191 China ,0000 0001 2256 9319grid.11135.37National Clinical Research Center for Mental Disorders & Key Laboratory of Mental Health, Ministry of Health, Peking University, Beijing, 100191 China ,Beijing Municipal Key Laboratory for Translational Research on Diagnosis and Treatment of Dementia, Beijing, 100191 China
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66
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Zhang K, Wang J, Peng G, Liu P, He F, Zhu Z, Luo B. Effect of cognitive training on episodic memory retrieval in amnestic mild cognitive impairment patients: study protocol for a clinical randomized controlled trial. Trials 2019; 20:26. [PMID: 30621794 PMCID: PMC6323840 DOI: 10.1186/s13063-018-3143-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Accepted: 12/17/2018] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND Mild cognitive impairment (MCI) is a transition state between asymptomatic stage and dementia. Amnestic MCI (aMCI) patients who mainly present with memory deficits are highly likely to progress to Alzheimer's disease (AD). At present, no broadly effective drug therapy is available to prevent the progression from memory deficit to dementia. Cognitive control training, which has transfer effects on multiple cognitive capacities including memory function in healthy old adults, has not yet been applied to aMCI. METHODS/DESIGN In this single-center, randomized double-blind placebo-controlled study, 70 aMCI patients will be recruited and randomly assigned to the training and control groups. The intervention is an Internet-based cognitive control training program performed for 30 min daily, five days per week, for 12 consecutive weeks. Neuropsychological assessment and structural and functional magnetic resonance imaging (MRI) will be performed at baseline and outcome. Primary outcomes are changes of episodic memory retrieval function. Secondary outcome measures are neuroplasticity changes measured by functional and structural MRI. DISCUSSION In this study, an Internet-based cognitive control training program is adopted to investigate whether cognitive control training can enhance the retrieval of episodic memory in aMCI patients. The combination of multi-modal MRI and neuropsychological tests could have a good sensitivity in evaluating the effects of cognitive control training and could also uncover the underlying neural underpinning. TRIAL REGISTRATION ClinicalTrials.gov, NCT03133052 . Registered on 21 April 2017.
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Affiliation(s)
- Kan Zhang
- Department of Neurology, The First Affiliated Hospital of Medical School of Zhejiang University, No.79 Qingchun Road, Hangzhou, 310003, China
| | - Junyang Wang
- Department of Neurology, The First Affiliated Hospital of Medical School of Zhejiang University, No.79 Qingchun Road, Hangzhou, 310003, China
| | - Guoping Peng
- Department of Neurology, The First Affiliated Hospital of Medical School of Zhejiang University, No.79 Qingchun Road, Hangzhou, 310003, China
| | - Ping Liu
- Department of Neurology, The First Affiliated Hospital of Medical School of Zhejiang University, No.79 Qingchun Road, Hangzhou, 310003, China
| | - Fangping He
- Department of Neurology, The First Affiliated Hospital of Medical School of Zhejiang University, No.79 Qingchun Road, Hangzhou, 310003, China
| | - Zude Zhu
- Collaborative Innovation Center for Language Competence, School of Linguistics and Arts, Jiangsu Normal University, Xuzhou, 221116, China.
| | - Benyan Luo
- Department of Neurology, The First Affiliated Hospital of Medical School of Zhejiang University, No.79 Qingchun Road, Hangzhou, 310003, China. .,Collaborative Innovation Center for Brain Science, Hangzhou, 310003, China.
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67
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Vieten C, Wahbeh H, Cahn BR, MacLean K, Estrada M, Mills P, Murphy M, Shapiro S, Radin D, Josipovic Z, Presti DE, Sapiro M, Chozen Bays J, Russell P, Vago D, Travis F, Walsh R, Delorme A. Future directions in meditation research: Recommendations for expanding the field of contemplative science. PLoS One 2018; 13:e0205740. [PMID: 30403693 PMCID: PMC6221271 DOI: 10.1371/journal.pone.0205740] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Accepted: 10/01/2018] [Indexed: 02/07/2023] Open
Abstract
The science of meditation has grown tremendously in the last two decades. Most studies have focused on evaluating the clinical effectiveness of mindfulness-based interventions, neural and other physiological correlates of meditation, and individual cognitive and emotional aspects of meditation. Far less research has been conducted on more challenging domains to measure, such as group and relational, transpersonal and mystical, and difficult aspects of meditation; anomalous or extraordinary phenomena related to meditation; and post-conventional stages of development associated with meditation. However, these components of meditation may be crucial to people's psychological and spiritual development, could represent important mediators and/or mechanisms by which meditation confers benefits, and could themselves be important outcomes of meditation practices. In addition, since large numbers of novices are being introduced to meditation, it is helpful to investigate experiences they may encounter that are not well understood. Over the last four years, a task force of meditation researchers and teachers met regularly to develop recommendations for expanding the current meditation research field to include these important yet often neglected topics. These meetings led to a cross-sectional online survey to investigate the prevalence of a wide range of experiences in 1120 meditators. Results show that the majority of respondents report having had many of these anomalous and extraordinary experiences. While some of the topics are potentially controversial, they can be subjected to rigorous scientific investigation. These arenas represent largely uncharted scientific terrain and provide excellent opportunities for both new and experienced researchers. We provide suggestions for future directions, with accompanying online materials to encourage such research.
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Affiliation(s)
- Cassandra Vieten
- Research Department, Institute of Noetic Sciences, Petaluma, California, United States of America
| | - Helané Wahbeh
- Research Department, Institute of Noetic Sciences, Petaluma, California, United States of America
- Department of Neurology, Oregon Health & Science University, Portland, Oregon, United States of America
| | - B. Rael Cahn
- Department of Psychiatry, University of Southern California, Los Angeles, California, United States of America
| | - Katherine MacLean
- Center for Optimal Living, New York, New York, United States of America
| | - Mica Estrada
- Institute for Health and Aging, School of Nursing, University of California, San Francisco, San Francisco, California, United States of America
| | - Paul Mills
- Department of Family Medicine and Public Health, University of California, San Diego, San Diego, California, United States of America
| | - Michael Murphy
- Center for Theory and Research, Esalen Institute, Big Sur, California, United States of America
| | - Shauna Shapiro
- Department of Counseling Psychology, Santa Clara University, Santa Clara, California, United States of America
| | - Dean Radin
- Research Department, Institute of Noetic Sciences, Petaluma, California, United States of America
| | - Zoran Josipovic
- Department of Psychology, New York University and Nonduality Institute, New York, New York, United States of America
| | - David E. Presti
- Department of Molecular and Cell Biology, University of California, Berkeley, California, United States of America
| | - Michael Sapiro
- Research Department, Institute of Noetic Sciences, Petaluma, California, United States of America
| | - Jan Chozen Bays
- Randall Children’s Hospital, Portland, Oregon, United States of America
| | - Peter Russell
- Research Department, Institute of Noetic Sciences, Petaluma, California, United States of America
| | - David Vago
- Osher Center for Integrative Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, United States of America
| | - Fred Travis
- Center for Brain, Consciousness and Cognition, Maharishi University of Management, Fairfield, Iowa, United States of America
| | - Roger Walsh
- School of Medicine, University of California, Irvine, California, United States of America
| | - Arnaud Delorme
- Research Department, Institute of Noetic Sciences, Petaluma, California, United States of America
- Department of Family Medicine and Public Health, University of California, San Diego, San Diego, California, United States of America
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68
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Lou W, Wang D, Wong A, Chu WCW, Mok VCT, Shi L. Frequency-specific age-related decreased brain network diversity in cognitively healthy elderly: A whole-brain data-driven analysis. Hum Brain Mapp 2018; 40:340-351. [PMID: 30240493 DOI: 10.1002/hbm.24376] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Revised: 08/16/2018] [Accepted: 08/17/2018] [Indexed: 12/14/2022] Open
Abstract
Age-related changes in functional brain network have been well documented. However, recent studies have suggested the nonstationary properties of the functional connectivity of the brain, and little is known about the changes of functional connectivity dynamics during aging. In this study, a two-step singular value decomposition was introduced to capture the dynamic patterns of the time-varying functional connectivity in different frequency intervals, and the whole-brain and regional brain diversity were quantified by using Shannon entropy. The relationships between age and functional connectivity dynamics were investigated in a relatively large sample cohort of cognitively healthy elderly (N = 188, ages 65-80). The results showed an age-related decreased diversity in the whole brain as well as in the right inferior frontal gyrus, right amygdala, right hippocampus, left parahippocampal, and left inferior parietal gyrus in the frequency interval of 0.06-0.12 Hz. In addition, the whole-brain diversity during resting state could also reflect the general mental flexibility. This study provided the first evidence of frequency-specific age effects on the functional connectivity dynamics in cognitively healthy elderly, and may shed new light on the dynamic functional connectivity analysis of aging and neurodegenerative diseases.
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Affiliation(s)
- Wutao Lou
- Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Hong Kong, China
| | - Defeng Wang
- Beijing Advanced Innovation Center for Big Data-Based Precision Medicine, Beihang University, Beijing, China.,School of Instrumentation Science and Opto-electronics Engineering, Beihang University, Beijing, China.,Department of Imaging and Interventional Radiology, The Chinese University of Hong Kong, Hong Kong, China.,Research Center for Medical Image Computing, The Chinese University of Hong Kong, Hong Kong, China
| | - Adrian Wong
- Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Hong Kong, China
| | - Winnie C W Chu
- Department of Imaging and Interventional Radiology, The Chinese University of Hong Kong, Hong Kong, China
| | - Vincent C T Mok
- Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Hong Kong, China.,Chow Yuk Ho Technology Centre for Innovative Medicine, The Chinese University of Hong Kong, Hong Kong, China
| | - Lin Shi
- Department of Imaging and Interventional Radiology, The Chinese University of Hong Kong, Hong Kong, China.,Research Center for Medical Image Computing, The Chinese University of Hong Kong, Hong Kong, China.,Chow Yuk Ho Technology Centre for Innovative Medicine, The Chinese University of Hong Kong, Hong Kong, China
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Tang Y, Lutz MW, Xing Y. A systems-based model of Alzheimer's disease. Alzheimers Dement 2018; 15:168-171. [PMID: 30102884 DOI: 10.1016/j.jalz.2018.06.3058] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Accepted: 06/15/2018] [Indexed: 12/21/2022]
Abstract
The new National Institute on Aging and the Alzheimer's Association Research Framework for Alzheimer's disease has been developed to accelerate drug discovery and offer a common structure and language to construct new Alzheimer's disease conceptual models. However, as a "complex" disease, a model based on systems-level understanding is needed to accommodate the complex, interacting etiologic pathways and the system-level changes associated with Alzheimer's disease pathogenesis and interventions that are currently known and which will be identified in the future. To accomplish this, the evolution of the structure of the research framework itself should be encouraged.
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Affiliation(s)
- Yi Tang
- Innovation Center for Neurological Disorders, Department of Neurology, Xuan Wu Hospital, Capital Medical University, Beijing, China.
| | - Michael W Lutz
- Department of Neurology, Duke University School of Medicine, Durham, NC, USA
| | - Yi Xing
- Innovation Center for Neurological Disorders, Department of Neurology, Xuan Wu Hospital, Capital Medical University, Beijing, China
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70
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Hartwigsen G. Flexible Redistribution in Cognitive Networks. Trends Cogn Sci 2018; 22:687-698. [DOI: 10.1016/j.tics.2018.05.008] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Revised: 05/26/2018] [Accepted: 05/26/2018] [Indexed: 10/14/2022]
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71
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Madden DL, Sale MV, Robinson GA. Improved conceptual generation and selection with transcranial direct current stimulation in older adults. J Clin Exp Neuropsychol 2018; 41:43-57. [DOI: 10.1080/13803395.2018.1491529] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Daniel L. Madden
- Neuropsychology Research Unit, School of Psychology, The University of Queensland, St. Lucia, Brisbane, QLD,Australia
| | - Martin V. Sale
- School of Health and Rehabilitation Sciences, and Queensland Brain Institute, The University of Queensland, St. Lucia, Brisbane, QLD,Australia
| | - Gail A. Robinson
- Neuropsychology Research Unit, School of Psychology, The University of Queensland, St. Lucia, Brisbane, QLD,Australia
- Neurology Department, Royal Brisbane and Women’s Hospital, Herston, Brisbane, QLD, Australia
- Systems Neuroscience, Queensland Institute of Medical Research Berghofer, Brisbane, QLD, Australia
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72
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Gheysen F, Poppe L, DeSmet A, Swinnen S, Cardon G, De Bourdeaudhuij I, Chastin S, Fias W. Physical activity to improve cognition in older adults: can physical activity programs enriched with cognitive challenges enhance the effects? A systematic review and meta-analysis. Int J Behav Nutr Phys Act 2018; 15:63. [PMID: 29973193 PMCID: PMC6032764 DOI: 10.1186/s12966-018-0697-x] [Citation(s) in RCA: 143] [Impact Index Per Article: 23.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Accepted: 06/25/2018] [Indexed: 01/21/2023] Open
Abstract
BACKGROUND Aging-related cognitive decline and cognitive impairment greatly impacts older adults' daily life. The worldwide ageing of the population and associated wave of dementia urgently calls for prevention strategies to reduce the risk of cognitive decline. Physical activity (PA) is known to improve cognitive function at older age through processes of neuroplasticity. Yet, emerging studies suggest that larger cognitive gains may be induced when PA interventions are combined with cognitive activity (CA). This meta-analysis evaluates these potential synergistic effects by comparing cognitive effects following combined PA + CA interventions to PA interventions (PA only), CA interventions (CA only) and control groups. METHODS Pubmed, Embase, PsycInfo, CINAHL and Sportdiscus were searched for English peer-reviewed papers until April 2018. Data were extracted on cognition and factors potentially influencing the cognitive effects: mode of PA + CA combination (sequential or simultaneous), session frequency and duration, intervention length and study quality. Differences between older adults with and without mild cognitive impairments were also explored. RESULTS Forty-one studies were included. Relative to the control group, combined PA + CA intervention showed significantly larger gains in cognition (g = 0.316; 95% CI 0.188-0.443; p < .001). Studies that compared combined PA + CA with PA only, showed small but significantly greater cognitive improvement in favor of combined interventions (g = 0.160; 95% CI 0.041-0.279; p = .008). No significant difference was found between combined PA + CA and CA only interventions. Furthermore, cognitive effects tended to be more pronounced for studies using simultaneous designs (g = 0.385; 95%CI 0.214-0.555; p < .001) versus sequential designs (g = 0.114; 95%CI -0.102- 0.331, p = .301). Effects were not moderated by session frequency, session duration, intervention length or study quality. Also, no differences in effects were found between older adults with and without mild cognitive impairments. CONCLUSION Findings of the current meta-analysis suggest that PA programs for older adults could integrate challenging cognitive exercises to improve cognitive health. Combined PA + CA programs should be promoted as a modality for preventing as well as treating cognitive decline in older adults. Sufficient cognitive challenge seems more important to obtain cognitive effects than high doses of intervention sessions.
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Affiliation(s)
- Freja Gheysen
- Department of Movement and Sports Sciences, Ghent University, Ghent, Belgium
| | - Louise Poppe
- Department of Movement and Sports Sciences, Ghent University, Ghent, Belgium
| | - Ann DeSmet
- Department of Movement and Sports Sciences, Ghent University, Ghent, Belgium
| | - Stephan Swinnen
- Movement Control and Neuroplasticity Research Group, KU Leuven, Leuven, Belgium
| | - Greet Cardon
- Department of Movement and Sports Sciences, Ghent University, Ghent, Belgium
| | | | - Sebastien Chastin
- Department of Movement and Sports Sciences, Ghent University, Ghent, Belgium
- Institute of Applied Health Research, School of Health and Life Science, Glasgow Caledonian University, Glasgow, UK
| | - Wim Fias
- Department of Experimental Psychology, Ghent University, Ghent, Belgium
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73
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Eguchi Y, Tasato K, Nakajima S, Noda Y, Tsugawa S, Shinagawa S, Niimura H, Hirose N, Arai Y, Mimura M. Relationships between socio-clinico-demographic factors and global cognitive function in the oldest old living in the Tokyo Metropolitan area: Reanalysis of the Tokyo Oldest Old Survey on Total Health (TOOTH). Int J Geriatr Psychiatry 2018. [PMID: 29514399 DOI: 10.1002/gps.4873] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
BACKGROUND Despite a steady increase in life expectancy, a few studies have investigated cross-sectional correlates and longitudinal predictors of cognitive function, a core domain of the successful aging, among socio-clinico-demographic factors in the oldest-old exclusively. OBJECTIVES The aims of this study were to examine socio-clinico-demographic characteristics associated with global cognition and its changes in the oldest-old. METHODS We reanalyzed a dataset of cognitively preserved community-dwelling subjects aged 85 years and older in the Tokyo Oldest Old Survey on Total Health, a 6-year longitudinal observational study. This study consisted of (1) baseline cross-sectional analyses examining correlates of global cognition (n = 248) among socio-clinico-demographic factors and (2) longitudinal analyses examining baseline predictors for changes of global cognition in 3-year follow-up (n = 195). The Mini-Mental State Examination was used as a screening test to assess global cognition. RESULTS At baseline, higher weights were related to higher cognitive function in the oldest-old. The baseline predictors of global cognitive decline in 3-year follow-up were higher global cognition, shorter education period, and lower sociocultural activities and lower instrumental activity of daily living, in this order. CONCLUSIONS The present study suggests that it is crucial to attain higher education during early life and avoid leanness or obesity, participate in sociocultural cognitive activities during late life, and maintain instrumental activity of daily living to preserve optimal cognitive function in the oldest-old, which will facilitate developing prevention strategies for cognitive decline and promoting successful aging in this increasing population.
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Affiliation(s)
- Yoko Eguchi
- Department of Neuropsychiatry, Keio University School of Medicine, Tokyo, Japan
| | - Kumiko Tasato
- Department of Neuropsychiatry, Keio University School of Medicine, Tokyo, Japan
| | - Shinichiro Nakajima
- Department of Neuropsychiatry, Keio University School of Medicine, Tokyo, Japan.,Multimodal Imaging Group, Research Imaging Centre, Centre for Addiction and Mental Health, University of Toronto, Toronto, Canada
| | - Yoshihiro Noda
- Department of Neuropsychiatry, Keio University School of Medicine, Tokyo, Japan
| | | | | | - Hidehito Niimura
- Department of Neuropsychiatry, Keio University School of Medicine, Tokyo, Japan
| | - Nobuyoshi Hirose
- Center for Supercentenarian Medical Research, Keio University School of Medicine, Tokyo, Japan
| | - Yasumichi Arai
- Center for Supercentenarian Medical Research, Keio University School of Medicine, Tokyo, Japan
| | - Masaru Mimura
- Department of Neuropsychiatry, Keio University School of Medicine, Tokyo, Japan
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74
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Nativio R, Donahue G, Berson A, Lan Y, Amlie-Wolf A, Tuzer F, Toledo JB, Gosai SJ, Gregory BD, Torres C, Trojanowski JQ, Wang LS, Johnson FB, Bonini NM, Berger SL. Dysregulation of the epigenetic landscape of normal aging in Alzheimer's disease. Nat Neurosci 2018; 21:497-505. [PMID: 29507413 PMCID: PMC6124498 DOI: 10.1038/s41593-018-0101-9] [Citation(s) in RCA: 196] [Impact Index Per Article: 32.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Accepted: 12/11/2017] [Indexed: 12/21/2022]
Abstract
Aging is the strongest risk factor for Alzheimer's disease (AD), although the underlying mechanisms remain unclear. The chromatin state, in particular through the mark H4K16ac, has been implicated in aging and thus may play a pivotal role in age-associated neurodegeneration. Here we compare the genome-wide enrichment of H4K16ac in the lateral temporal lobe of AD individuals against both younger and elderly cognitively normal controls. We found that while normal aging leads to H4K16ac enrichment, AD entails dramatic losses of H4K16ac in the proximity of genes linked to aging and AD. Our analysis highlights the presence of three classes of AD-related changes with distinctive functional roles. Furthermore, we discovered an association between the genomic locations of significant H4K16ac changes with genetic variants identified in prior AD genome-wide association studies and with expression quantitative trait loci. Our results establish the basis for an epigenetic link between aging and AD.
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Affiliation(s)
- Raffaella Nativio
- Epigenetics Program, Department of Cell and Developmental Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Greg Donahue
- Epigenetics Program, Department of Cell and Developmental Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Amit Berson
- Department of Biology, University of Pennsylvania, Philadelphia, PA, USA
| | - Yemin Lan
- Epigenetics Program, Department of Cell and Developmental Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Alexandre Amlie-Wolf
- Department of Pathology & Laboratory Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Ferit Tuzer
- Department of Pathology, Drexel University College of Medicine, Philadelphia, PA, USA
| | - Jon B Toledo
- Department of Pathology & Laboratory Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Sager J Gosai
- Department of Biology, University of Pennsylvania, Philadelphia, PA, USA
| | - Brian D Gregory
- Department of Biology, University of Pennsylvania, Philadelphia, PA, USA
| | - Claudio Torres
- Department of Pathology, Drexel University College of Medicine, Philadelphia, PA, USA
| | - John Q Trojanowski
- Department of Pathology & Laboratory Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Li-San Wang
- Department of Pathology & Laboratory Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - F Brad Johnson
- Department of Pathology & Laboratory Medicine, University of Pennsylvania, Philadelphia, PA, USA.
| | - Nancy M Bonini
- Department of Biology, University of Pennsylvania, Philadelphia, PA, USA.
| | - Shelley L Berger
- Epigenetics Program, Department of Cell and Developmental Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
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75
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Ji L, Pearlson GD, Hawkins KA, Steffens DC, Guo H, Wang L. A New Measure for Neural Compensation Is Positively Correlated With Working Memory and Gait Speed. Front Aging Neurosci 2018; 10:71. [PMID: 29615893 PMCID: PMC5868123 DOI: 10.3389/fnagi.2018.00071] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Accepted: 03/02/2018] [Indexed: 11/13/2022] Open
Abstract
Neuroimaging studies suggest that older adults may compensate for declines in brain function and cognition through reorganization of neural resources. A limitation of prior research is reliance on between-group comparisons of neural activation (e.g., younger vs. older), which cannot be used to assess compensatory ability quantitatively. It is also unclear about the relationship between compensatory ability with cognitive function or how other factors such as physical exercise modulates compensatory ability. Here, we proposed a data-driven method to semi-quantitatively measure neural compensation under a challenging cognitive task, and we then explored connections between neural compensation to cognitive engagement and cognitive reserve (CR). Functional and structural magnetic resonance imaging scans were acquired for 26 healthy older adults during a face-name memory task. Spatial independent component analysis (ICA) identified visual, attentional and left executive as core networks. Results show that the smaller the volumes of the gray matter (GM) structures within core networks, the more networks were needed to conduct the task (r = -0.408, p = 0.035). Therefore, the number of task-activated networks controlling for the GM volume within core networks was defined as a measure of neural compensatory ability. We found that compensatory ability correlated with working memory performance (r = 0.528, p = 0.035). Among subjects with good memory task performance, those with higher CR used fewer networks than subjects with lower CR. Among poor-performance subjects, those using more networks had higher CR. Our results indicated that using a high cognitive-demanding task to measure the number of activated neural networks could be a useful and sensitive measure of neural compensation in older adults.
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Affiliation(s)
- Lanxin Ji
- Center for Biomedical Imaging Research, Department of Biomedical Engineering, Tsinghua University, Beijing, China.,Olin Neuropsychiatry Research Center, Institute of Living, Hartford Hospital, Hartford, CT, United States.,Department of Psychiatry, Yale School of Medicine, Yale University, New Haven, CT, United States
| | - Godfrey D Pearlson
- Olin Neuropsychiatry Research Center, Institute of Living, Hartford Hospital, Hartford, CT, United States.,Department of Psychiatry, Yale School of Medicine, Yale University, New Haven, CT, United States.,Department of Neuroscience, Yale School of Medicine, Yale University, New Haven, CT, United States
| | - Keith A Hawkins
- Olin Neuropsychiatry Research Center, Institute of Living, Hartford Hospital, Hartford, CT, United States.,Department of Psychiatry, Yale School of Medicine, Yale University, New Haven, CT, United States
| | - David C Steffens
- Department of Psychiatry, University of Connecticut Health Center, Farmington, CT, United States
| | - Hua Guo
- Center for Biomedical Imaging Research, Department of Biomedical Engineering, Tsinghua University, Beijing, China
| | - Lihong Wang
- Department of Psychiatry, University of Connecticut Health Center, Farmington, CT, United States
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76
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Targeted Right Medial Temporal Lobe tDCS and Associative Spatial and Non-Spatial Memory. JOURNAL OF COGNITIVE ENHANCEMENT 2018. [DOI: 10.1007/s41465-018-0072-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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77
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Dario MFR, Sara T, Estela CO, Margarita PM, Guillermo ET, Fernando RDF, Javier SL, Carmen P. Stress, Depression, Resilience and Ageing: A Role for the LPA-LPA1 Pathway. Curr Neuropharmacol 2018; 16:271-283. [PMID: 28699486 PMCID: PMC5843979 DOI: 10.2174/1570159x15666170710200352] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Revised: 05/26/2017] [Accepted: 06/30/2017] [Indexed: 01/12/2023] Open
Abstract
BACKGROUND Chronic stress affects health and the quality of life, with its effects being particularly relevant in ageing due to the psychobiological characteristics of this population. However, while some people develop psychiatric disorders, especially depression, others seem very capable of dealing with adversity. There is no doubt that along with the identification of neurobiological mechanisms involved in developing depression, discovering which factors are involved in positive adaptation under circumstances of extreme difficulty will be crucial for promoting resilience. METHODS Here, we review recent work in our laboratory, using an animal model lacking the LPA1 receptor, together with pharmacological studies and clinical evidence for the possible participation of the LPA1 receptor in mood and resilience to stress. RESULTS Substantial evidence has shown that the LPA1 receptor is involved in emotional regulation and in coping responses to chronic stress, which, if dysfunctional, may induce vulnerability to stress and predisposition to the development of depression. Given that there is commonality of mechanisms between those involved in negative consequences of stress and in ageing, this is not surprising, considering that the LPA1 receptor may be involved in coping with adversity during ageing. CONCLUSION Alterations in this receptor may be a susceptibility factor for the presence of depression and cognitive deficits in the elderly population. However, because this is only a promising hypothesis based on previous data, future studies should focus on the involvement of the LPA-LPA1 pathway in coping with stress and resilience in ageing.
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Affiliation(s)
- Moreno-Fernández Román Dario
- Departamento de Psicobiología y Metodología de las CC, Instituto de Investigación Biomédica de Málaga (IBIMA), Universidad de Málaga; Málaga 29071, Spain
| | - Tabbai Sara
- Departamento de Psicobiología y Metodología de las CC, Instituto de Investigación Biomédica de Málaga (IBIMA), Universidad de Málaga; Málaga 29071, Spain
| | - Castilla-Ortega Estela
- Unidad de Gestión Clínica de Salud Mental, Instituto de Investigación Biomédica de Málaga (IBIMA), Hospital Regional Universitario de Málaga; Málaga 29010, Spain
| | - Pérez-Martín Margarita
- Departamento de Biología Celular, Genética y Fisiología, Instituto de Investigación Biomédica de Málaga (IBIMA), Universidad de
Málaga; Málaga 29071, Spain
| | - Estivill-Torrús Guillermo
- Unidad de Gestión Clínica de Neurociencias, Instituto de Investigación Biomédica de Málaga (IBIMA), Hospital Regional Universitarios de Málaga, Málaga, Spain
| | - Rodríguez de Fonseca Fernando
- Unidad de Gestión Clínica de Salud Mental, Instituto de Investigación Biomédica de Málaga (IBIMA), Hospital Regional Universitario de Málaga; Málaga 29010, Spain
| | - Santin Luis Javier
- Departamento de Psicobiología y Metodología de las CC, Instituto de Investigación Biomédica de Málaga (IBIMA), Universidad de Málaga; Málaga 29071, Spain
| | - Pedraza Carmen
- Departamento de Psicobiología y Metodología de las CC, Instituto de Investigación Biomédica de Málaga (IBIMA), Universidad de Málaga; Málaga 29071, Spain
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78
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Age-dependent changes in brain hydration and synaptic plasticity. Brain Res 2017; 1680:46-53. [PMID: 29246764 DOI: 10.1016/j.brainres.2017.12.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Revised: 12/04/2017] [Accepted: 12/08/2017] [Indexed: 11/21/2022]
Abstract
Aging in humans and animals is associated with gradual and variable changes in some cognitive functions, but what causes them and explains individual variations remains unclear. Hydration decreases with aging but whether dehydration contributes to cognitive dysfunction is not known. The brain hydration of aging mice was determined by colloidosmotic-pressure titration. Dehydration increased with age from ∼76 mmHg at 6 weeks to ∼105 mmHg at 40 weeks, or a progressive ∼10 percent loss of brain water but seemed to level off afterward. When we adjusted dehydration in hippocampal slices of <8-week-old mice to the levels seen in mice 40 weeks and older, their basal synaptic responses were amplified at all stimulus voltages tested, but induction of late-phase long-term potentiation was impaired. Our results document progressive brain dehydration with age in inbred mice to levels at which in vitro synaptic plasticity appears dysregulated. They also suggest that dehydration contributes to some of the changes in synaptic plasticity observed with aging, possibly due to adjustments in neuronal excitation mechanisms.
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79
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Díaz F, Pereiro AX. [Cognitive neuroscience of aging. Contributions and challenges]. Rev Esp Geriatr Gerontol 2017; 53:100-104. [PMID: 29217330 DOI: 10.1016/j.regg.2017.07.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Accepted: 07/06/2017] [Indexed: 12/11/2022]
Abstract
The cognitive neuroscience of aging is a young discipline that has emerged as a result of the combination of: A) the theoretical and explanatory frameworks proposed by the cognitive psychology perspective throughout the second half of the twentieth century; B) the designs and methodological procedures arising from experimental psychology and the need to test the hypotheses proposed from the cognitive psychology perspective; C) the contributions of the computer sciences to the explanation of brain functions; and D) the development and use of neuroimaging techniques that have enabled the recording of brain activity in humans while tasks that test some cognitive process or function are performed. An analysis on the impact of research conducted from this perspective over the last 3decades has been carried out, including its shortcomings, as well as the potential directions and usefulness that will advantageously continue to drive this discipline in its description and explanation of the process es of cerebral and cognitive aging.
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Affiliation(s)
- Fernando Díaz
- Departamento de Psicoloxía Clínica e Psicobioloxía. Grupo GI-1807-USC. Facultade de Psicoloxía, Universidade de Santiago de Compostela, Santiago de Compostela (Galicia), España
| | - Arturo X Pereiro
- Departamento de Psicoloxía Evolutiva e da Educación. Grupo GI-1807-USC. Facultade de Psicoloxía, Universidade de Santiago de Compostela, Santiago de Compostela (Galicia) España.
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80
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Katakura Y, Totsuka M, Imabayashi E, Matsuda H, Hisatsune T. Anserine/Carnosine Supplementation Suppresses the Expression of the Inflammatory Chemokine CCL24 in Peripheral Blood Mononuclear Cells from Elderly People. Nutrients 2017; 9:nu9111199. [PMID: 29088099 PMCID: PMC5707671 DOI: 10.3390/nu9111199] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Revised: 10/16/2017] [Accepted: 10/27/2017] [Indexed: 11/16/2022] Open
Abstract
Our goal was to determine whether anserine/carnosine supplementation (ACS) suppresses chemokine levels in elderly people. In a double-blind randomized controlled trial, volunteers were assigned to the ACS or placebo group (1:1). Sixty healthy elderly volunteers (active, n = 30; placebo, n = 30) completed the study. The ACS group was administered 1.0 g of anserine/carnosine (3:1) for 3 months. A microarray analysis and subsequent quantitative real-time polymerase chain reaction (qRT-PCR) analysis of peripheral blood mononuclear cells (PBMCs) showed decreased expression of CCL24, an inflammatory chemokine (p < 0.05). Verbal memory, assessed using the Wechsler memory scale-logical memory, was preserved in the ACS group. An age-restricted sub-analysis showed significant verbal memory preservation by ACS in participants who were in their 60s (active, n = 12; placebo, n = 9; p = 0.048) and 70s (active, n = 7; placebo, n = 11; p = 0.017). The suppression of CCL24 expression was greatest in people who were in their 70s (p < 0.01). There was a significant correlation between the preservation of verbal memory and suppression of CCL24 expression in the group that was in the 70s (Poisson correlation, r = 0.46, p < 0.05). These results suggest that ACS may preserve verbal episodic memory, probably owing to CCL24 suppression in the blood, especially in elderly participants.
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Affiliation(s)
- Yoshinori Katakura
- Faculty of Agriculture, Kyushu University, Higashi-ku, Fukuoka 812-8581, Japan.
| | - Mamoru Totsuka
- Department of Applied Biochemistry, Graduate School of Agriculture and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan.
| | - Etsuko Imabayashi
- Integrative Brain Imaging Center (IBIC), National Center of Neurology and Psychiatry, Tokyo 187-8551, Japan.
| | - Hiroshi Matsuda
- Integrative Brain Imaging Center (IBIC), National Center of Neurology and Psychiatry, Tokyo 187-8551, Japan.
| | - Tatsuhiro Hisatsune
- Department of Integrated Biosciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa 277-8562, Japan.
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81
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The Reduction of Ventrolateral Prefrontal Cortex Gray Matter Volume Correlates with Loss of Economic Rationality in Aging. J Neurosci 2017; 37:12068-12077. [PMID: 28982708 DOI: 10.1523/jneurosci.1171-17.2017] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Revised: 09/27/2017] [Accepted: 09/28/2017] [Indexed: 12/21/2022] Open
Abstract
The population of people above 65 years old continues to grow, and there is mounting evidence that as humans age they are more likely to make errors. However, the specific effect of neuroanatomical aging on the efficiency of economic decision-making is poorly understood. We used whole-brain voxel-based morphometry analysis to determine where reduction of gray matter volume in healthy female and male adults over the age of 65 years correlates with a classic measure of economic irrationality: violations of the Generalized Axiom of Revealed Preference. All participants were functionally normal with Mini-Mental State Examination scores ranging between 26 and 30. While our elders showed the previously reported decline in rationality compared with younger subjects, chronological age per se did not correlate with rationality measures within our population of elders. Instead, reduction of gray matter density in ventrolateral prefrontal cortex correlates tightly with irrational behavior. Interestingly, using a large fMRI sample and meta-analytic tool with Neurosynth, we found that this brain area shows strong coactivation patterns with nearly all of the value-associated regions identified in previous studies. These findings point toward a neuroanatomic locus for economic rationality in the aging brain and highlight the importance of understanding both anatomy and function in the study of aging, cognition, and decision-making.SIGNIFICANCE STATEMENT Age is a crucial factor in decision-making, with older individuals making more errors in choices. Using whole-brain voxel-based morphometry analysis, we found that reduction of gray matter density in ventrolateral prefrontal cortex correlates with economic irrationality: reduced gray matter volume in this area correlates with the frequency and severity of violations of the Generalized Axiom of Revealed Preference. Furthermore, this brain area strongly coactivates with other reward-associated regions identified with Neurosynth. These findings point toward a role for neuroscientific discoveries in shaping long-standing economic views of decision-making.
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82
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Cognitive behavioral therapy (CBT) for preventing Alzheimer's disease. Behav Brain Res 2017; 334:163-177. [PMID: 28743599 DOI: 10.1016/j.bbr.2017.07.024] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Revised: 07/15/2017] [Accepted: 07/18/2017] [Indexed: 12/13/2022]
Abstract
This review provides the rationale for implementing cognitive behavioral therapy (CBT) for the prevention of Alzheimer's disease (AD). There are known risk factors associated with the development of AD, some of which may be ameliorated with CBT. We posit that treating the risk factors of inactivity, poor diet, hyposmia and anosmia, sleep disorders and lack of regularly engaged challenging cognitive activity will modify the physiology of the brain sufficiently to avoid the accumulation of excess proteins, including amyloid beta, causal events in the development of AD. Further, the successful treatment of the listed risk factors is well within our technology to do so and, even further, it is cost effective. Also, there is considerable scientific literature to support the proposition that, if implemented by well-established practices, CBT will be effective and will be engaged by those of retirement age. That is, we present a biologically informed CBT for the prevention of the development of AD, i.e., an aspect of applied behavioral neuroscience.
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83
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Modulating perceptual complexity and load reveals degradation of the visual working memory network in ageing. Neuroimage 2017. [DOI: 10.1016/j.neuroimage.2017.06.019] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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84
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Martin AK, Meinzer M, Lindenberg R, Sieg MM, Nachtigall L, Flöel A. Effects of Transcranial Direct Current Stimulation on Neural Networks in Young and Older Adults. J Cogn Neurosci 2017; 29:1817-1828. [PMID: 28707568 DOI: 10.1162/jocn_a_01166] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Transcranial direct current stimulation (tDCS) may be a viable tool to improve motor and cognitive function in advanced age. However, although a number of studies have demonstrated improved cognitive performance in older adults, other studies have failed to show restorative effects. The neural effects of beneficial stimulation response in both age groups is lacking. In the current study, tDCS was administered during simultaneous fMRI in 42 healthy young and older participants. Semantic word generation and motor speech baseline tasks were used to investigate behavioral and neural effects of uni- and bihemispheric motor cortex tDCS in a three-way, crossover, sham tDCS controlled design. Independent components analysis assessed differences in task-related activity between the two age groups and tDCS effects at the network level. We also explored whether laterality of language network organization was effected by tDCS. Behaviorally, both active tDCS conditions significantly improved semantic word retrieval performance in young and older adults and were comparable between groups and stimulation conditions. Network-level tDCS effects were identified in the ventral and dorsal anterior cingulate networks in the combined sample during semantic fluency and motor speech tasks. In addition, a shift toward enhanced left laterality was identified in the older adults for both active stimulation conditions. Thus, tDCS results in common network-level modulations and behavioral improvements for both age groups, with an additional effect of increasing left laterality in older adults.
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Affiliation(s)
| | | | | | - Mira M Sieg
- Charité University Medicine, Berlin, Germany
| | | | - Agnes Flöel
- Charité University Medicine, Berlin, Germany.,University of Greifswald
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85
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Zhao H, Qiao L, Fan D, Zhang S, Turel O, Li Y, Li J, Xue G, Chen A, He Q. Modulation of Brain Activity with Noninvasive Transcranial Direct Current Stimulation (tDCS): Clinical Applications and Safety Concerns. Front Psychol 2017; 8:685. [PMID: 28539894 PMCID: PMC5423956 DOI: 10.3389/fpsyg.2017.00685] [Citation(s) in RCA: 75] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2017] [Accepted: 04/19/2017] [Indexed: 11/13/2022] Open
Abstract
Transcranial direct current stimulation (tDCS) is a widely-used tool to induce neuroplasticity and modulate cortical function by applying weak direct current over the scalp. In this review, we first introduce the underlying mechanism of action, the brief history from discovery to clinical scientific research, electrode positioning and montages, and parameter setup of tDCS. Then, we review tDCS application in clinical samples including people with drug addiction, major depression disorder, Alzheimer's disease, as well as in children. This review covers the typical characteristics and the underlying neural mechanisms of tDCS treatment in such studies. This is followed by a discussion of safety, especially when the current intensity is increased or the stimulation duration is prolonged. Given such concerns, we provide detailed suggestions regarding safety procedures for tDCS operation. Lastly, future research directions are discussed. They include foci on the development of multi-tech combination with tDCS such as with TMS and fMRI; long-term behavioral and morphological changes; possible applications in other research domains, and more animal research to deepen the understanding of the biological and physiological mechanisms of tDCS stimulation.
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Affiliation(s)
- Haichao Zhao
- Faculty of Psychology, Southwest UniversityChongqing, China
| | - Lei Qiao
- Faculty of Psychology, Southwest UniversityChongqing, China
| | - Dongqiong Fan
- Faculty of Psychology, Southwest UniversityChongqing, China
| | - Shuyue Zhang
- School of Education, Guangxi UniversityNanning, China
| | - Ofir Turel
- Department of Information systems and Decision Sciences, College of Business and Economics, California State University, FullertonFullerton, CA, USA
| | - Yonghui Li
- Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of SciencesBeijing, China
| | - Jun Li
- National Key Laboratory of Cognitive Neuroscience and Learning, IDG/McGovern Institute for Brain Research, Beijing Normal UniversityBeijing, China
| | - Gui Xue
- National Key Laboratory of Cognitive Neuroscience and Learning, IDG/McGovern Institute for Brain Research, Beijing Normal UniversityBeijing, China
| | - Antao Chen
- Faculty of Psychology, Southwest UniversityChongqing, China
| | - Qinghua He
- Faculty of Psychology, Southwest UniversityChongqing, China.,Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of SciencesBeijing, China.,Southwest University Branch, Collaborative Innovation Center of Assessment toward Basic Education Quality at Beijing Normal UniversityChongqing, China
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86
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Hanajima R, Tanaka N, Tsutsumi R, Enomoto H, Abe M, Nakamura K, Kobayashi S, Hamada M, Shimizu T, Terao Y, Ugawa Y. The effect of age on the homotopic motor cortical long-term potentiation-like effect induced by quadripulse stimulation. Exp Brain Res 2017; 235:2103-2108. [PMID: 28386713 DOI: 10.1007/s00221-017-4953-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Accepted: 04/01/2017] [Indexed: 12/22/2022]
Abstract
The reduction of plasticity with age has been shown by many previous papers in animal experiments. This issue can be studied in humans because several non-invasive brain stimulation techniques induce synaptic plasticity in the human brain. We investigated the influence of individuals' age on the responder rate of the long-term potentiation (LTP)-like effect induced by quadripulse magnetic stimulation (QPS). The participants were 107 healthy volunteers: 53 older participants (Mean ± SD 65.0 ± 1.5 years) and 54 younger participants (37.2 ± 8.7). The quadripulse stimulation with 5-ms inter-pulse interval (QPS5) was applied over the primary motor cortex (M1). We measured motor evoked potentials (MEPs) before QPS, and at five time points after QPS for up to 25 min. In each participant, average MEP amplitude (size) ratios were quantified. We first classified participants as responders and non-responders simply by comparing the size ratio with 1.0 for consistency with previous studies, then as "significant responders", "non-responders", and "opposite responders" for more detailed analysis by comparing the size ratio with the mean and standard deviation of the MEP size ratios of the sham condition. The degree of LTP-like effects induced by QPS5 was significantly smaller in the older group compared to the younger group. Also, the rates of responders and significant responders were lower in the older group (58 and 47%, respectively) compared to the younger group (80 and 76%, respectively). The age of the participants significantly affected the LTP-like effect induced by QPS5, which suggests that brain plasticity decreases with age.
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Affiliation(s)
- Ritsuko Hanajima
- Department of Neurology, Kitasato University School of Medicine, 2-1-1 Asamizodai, Minami-ku, Sagamihara, Kanagawa, 252-0380, Japan.
- Department of Neurology, The University of Tokyo, Tokyo, Japan.
- Division of Neurology, Department of Brain and Neurosciences, Faculty of Medicine, Tottori University, Yonago, Japan.
| | - Nobuyuki Tanaka
- Department of Neurology, The University of Tokyo, Tokyo, Japan
| | - Ryosuke Tsutsumi
- Department of Neurology, Kitasato University School of Medicine, 2-1-1 Asamizodai, Minami-ku, Sagamihara, Kanagawa, 252-0380, Japan
- Department of Neurology, The University of Tokyo, Tokyo, Japan
| | - Hiroyuki Enomoto
- Department of Neurology, Fukushima Medical University, Fukushima, Japan
| | - Mitsunari Abe
- Department of Neurology, Fukushima Medical University, Fukushima, Japan
| | - Koichiro Nakamura
- Department of Neurology, Fukushima Medical University, Fukushima, Japan
| | | | - Masashi Hamada
- Department of Neurology, The University of Tokyo, Tokyo, Japan
| | - Takahiro Shimizu
- Department of Neurology, Kitasato University School of Medicine, 2-1-1 Asamizodai, Minami-ku, Sagamihara, Kanagawa, 252-0380, Japan
- Department of Neurology, The University of Tokyo, Tokyo, Japan
| | - Yasuo Terao
- Department of Neurology, The University of Tokyo, Tokyo, Japan
| | - Yoshikazu Ugawa
- Department of Neurology, Fukushima Medical University, Fukushima, Japan
- Advanced Clinical Research Center, Fukushima Global Medical Science Center, Fukushima Medical University, Fukushima, Japan
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87
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tDCS-Induced Modulation of GABA Levels and Resting-State Functional Connectivity in Older Adults. J Neurosci 2017; 37:4065-4073. [PMID: 28314813 DOI: 10.1523/jneurosci.0079-17.2017] [Citation(s) in RCA: 95] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Revised: 02/17/2017] [Accepted: 03/01/2017] [Indexed: 12/15/2022] Open
Abstract
Transcranial direct current stimulation (tDCS) modulates human behavior, neuronal patterns, and metabolite concentrations, with exciting potential for neurorehabilitation. However, the understanding of tDCS-induced alterations on the neuronal level is incomplete, and conclusions from young adults, in whom the majority of studies have been conducted, cannot be easily transferred to older populations. Here, we investigated tDCS-induced effects in older adults (N = 48; age range, 50-79 years) using magnetic resonance spectroscopy to quantify GABA levels as well as resting-state functional magnetic resonance imaging to assess sensorimotor network strength and interhemispheric connectivity. In a randomized, counterbalanced, crossover design, we applied anodal tDCS (atDCS), cathodal tDCS (ctDCS), and sham tDCS (stDCS) over the left sensorimotor region. We observed a significant reduction of GABA levels after atDCS compared with stDCS, reflecting the preserved neuromodulatory effect of atDCS in older adults. Moreover, resting-state functional coupling was decreased during atDCS compared with stDCS, most likely indicating augmented efficiency in brain network functioning. Increased levels of interhemispheric connectivity with age were diminished by atDCS, suggesting stimulation-induced functional decoupling. Further, the magnitude of atDCS-induced local plasticity was related to baseline functional network strength. Our findings provide novel insight into the neuronal correlates underlying tDCS-induced neuronal plasticity in older adults and thus might help to develop tDCS interventions tailored to the aging brain.SIGNIFICANCE STATEMENT Transcranial direct current stimulation (tDCS) modulates human behavior, neuronal patterns, and metabolite concentrations, with exciting potential for neurorehabilitation. However, the understanding of tDCS-induced alterations on the neuronal level is incomplete, and conclusions from young adults cannot be easily transferred to older populations. We used a systematic multimodal imaging approach to investigate the neurophysiological effects of tDCS in older adults and found stimulation-induced effects on GABA levels, reflecting augmented local plasticity and functional connectivity, suggesting modulation of network efficiency. Our findings may help to reconcile some of the recent reports on the variability of tDCS-induced effects, not only implicating age as a crucial modulating factor, but detailing its specific impact on the functionality of neural networks.
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88
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Rutherford BR, Taylor WD, Brown PJ, Sneed JR, Roose SP. Biological Aging and the Future of Geriatric Psychiatry. J Gerontol A Biol Sci Med Sci 2017; 72:343-352. [PMID: 27994004 PMCID: PMC6433424 DOI: 10.1093/gerona/glw241] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Accepted: 11/08/2016] [Indexed: 01/21/2023] Open
Abstract
Advances in understanding the biological bases of aging have intellectually revitalized the field of geriatric psychiatry and broadened its scope to include promoting successful aging and studying resilience factors in older adults. To describe the process by which this paradigm shift has occurred and illustrate its implications for treatment and research of late-life brain disorders, late-life depression is discussed as a prototype case. Prior phases of geriatric psychiatry research were focused on achieving depressive symptom relief, outlining pharmacokinetic and pharmacodynamic differences between older and younger adults, and identifying moderators of treatment response. Building on this work, current geriatric psychiatry researchers have begun to disentangle the etiologic complexity in late-life depression by focusing on the causative aging-related processes involved, identifying both neurobiological and behavioral intermediates, and finally delineating depression subtypes that are distinguishable by their underlying biology and the treatment approach required. In this review, we discuss several age-related processes that are critical to the development of late-life mood disorders, outline implications of these processes for the clinical evaluation and management of later-life psychiatric disorders, and finally put forth suggestions for better integrating aging and developmental processes into the National Institute of Mental Health's Research Domain Criteria.
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Affiliation(s)
- Bret R Rutherford
- Columbia University College of Physicians and Surgeons, New York State Psychiatric Institute
| | - Warren D Taylor
- Vanderbilt University Medical Center, Geriatric Research, Education, and Clinical Center, Department of Veterans Affairs, Tennessee Valley Health Care Center
| | - Patrick J Brown
- Columbia University College of Physicians and Surgeons, New York State Psychiatric Institute
| | - Joel R Sneed
- Queens College of the City University of New York
| | - Steven P Roose
- Columbia University College of Physicians and Surgeons, New York State Psychiatric Institute
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89
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Fiori V, Nitsche M, Iasevoli L, Cucuzza G, Caltagirone C, Marangolo P. Differential effects of bihemispheric and unihemispheric transcranial direct current stimulation in young and elderly adults in verbal learning. Behav Brain Res 2017; 321:170-175. [DOI: 10.1016/j.bbr.2016.12.044] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Revised: 12/29/2016] [Accepted: 12/31/2016] [Indexed: 12/19/2022]
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90
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Enhancement of motor consolidation by post-training transcranial direct current stimulation in older people. Neurobiol Aging 2017; 49:1-8. [DOI: 10.1016/j.neurobiolaging.2016.09.003] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Revised: 08/26/2016] [Accepted: 09/07/2016] [Indexed: 11/22/2022]
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91
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Trumbo MC, Matzen LE, Coffman BA, Hunter MA, Jones AP, Robinson CS, Clark VP. Enhanced working memory performance via transcranial direct current stimulation: The possibility of near and far transfer. Neuropsychologia 2016; 93:85-96. [DOI: 10.1016/j.neuropsychologia.2016.10.011] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2016] [Revised: 09/16/2016] [Accepted: 10/14/2016] [Indexed: 10/20/2022]
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92
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What success can teach us about failure: the plasma metabolome of older adults with superior memory and lessons for Alzheimer's disease. Neurobiol Aging 2016; 51:148-155. [PMID: 27939698 DOI: 10.1016/j.neurobiolaging.2016.11.007] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Revised: 11/12/2016] [Accepted: 11/13/2016] [Indexed: 11/22/2022]
Abstract
As the world population ages, primary prevention of age-related cognitive decline and disability will become increasingly important. Prevention strategies are often developed from an understanding of disease pathobiology, but models of biological success may provide additional useful insights. Here, we studied 224 older adults, some with superior memory performance (n = 41), some with normal memory performance (n = 109), and some with mild cognitive impairment or Alzheimer's disease (AD; n = 74) to understand metabolomic differences which might inform future interventions to promote cognitive health. Plasma metabolomics revealed significant differential abundance of 12 metabolites in those with superior memory relative to controls (receiver operating characteristic area under the curve [AUC] = 0.89) and the inverse abundance pattern in the mild cognitive impairment, AD (AUC = 1.0) and even preclinical AD groups relative to controls (AUC = 0.97). The 12 metabolites are components of key metabolic pathways regulating oxidative stress, inflammation, and nitric oxide bioavailability. These findings from opposite ends of the cognitive continuum highlight the role of these pathways in superior memory abilities and whose failure may contribute to age-related memory impairment. These pathways may be targeted to promote successful cognitive aging.
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93
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Chiao JY. Cultural Neuroscience of the Developing Brain in Childhood. MINNESOTA SYMPOSIA ON CHILD PSYCHOLOGY 2016. [DOI: 10.1002/9781119301981.ch1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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94
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Hisatsune T, Kaneko J, Kurashige H, Cao Y, Satsu H, Totsuka M, Katakura Y, Imabayashi E, Matsuda H. Effect of Anserine/Carnosine Supplementation on Verbal Episodic Memory in Elderly People. J Alzheimers Dis 2016; 50:149-59. [PMID: 26682691 PMCID: PMC4927867 DOI: 10.3233/jad-150767] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Our goal in this study was to determine whether or not anserine/carnosine supplementation (ACS) is capable of preserving cognitive function of elderly people. In a double-blind randomized controlled trial, volunteers were randomly assigned to an ACS or placebo group at a 1:1 ratio. The ACS group took 1.0 g of an anserine/carnosine (3:1) formula daily for 3 months. Participants were evaluated by psychological tests before and after the 3-month supplementation period. Thirty-nine healthy elderly volunteers (60–78 years old) completed the follow-up tests. Among the tests, delayed recall verbal memory assessed by the Wechsler Memory Scale-Logical Memory showed significant preservation in the ACS group, compared to the placebo group (p = 0.0128). Blood analysis revealed a decreased secretion of inflammatory cytokines, including CCL-2 and IL-8, in the ACS group. MRI analysis using arterial spin labeling showed a suppression in the age-related decline in brain blood flow in the posterior cingulate cortex area in the ACS group, compared to the placebo group (p = 0.0248). In another randomized controlled trial, delayed recall verbal memory showed significant preservation in the ACS group, compared to the placebo group (p = 0.0202). These results collectively suggest that ACS may preserve verbal episodic memory and brain perfusion in elderly people, although further study is needed.
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Affiliation(s)
- Tatsuhiro Hisatsune
- Department of Integrated Biosciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Japan
| | - Jun Kaneko
- Department of Integrated Biosciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Japan
| | - Hiroki Kurashige
- Department of Integrated Biosciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Japan
| | - Yuan Cao
- Department of Applied Biochemistry, Graduate School of Agriculture and Life Sciences, The University of Tokyo, Kashiwa, Japan
| | - Hideo Satsu
- Department of Applied Biochemistry, Graduate School of Agriculture and Life Sciences, The University of Tokyo, Kashiwa, Japan
| | - Mamoru Totsuka
- Department of Applied Biochemistry, Graduate School of Agriculture and Life Sciences, The University of Tokyo, Kashiwa, Japan
| | - Yoshinori Katakura
- Graduate School of Systems Life Sciences, Kyushu University, Higashi-ku, Fukuoka, Japan
| | - Etsuko Imabayashi
- Integrative Brain Imaging Center (IBIC), National Center of Neurology and Psychiatry, Tokyo, Japan
| | - Hiroshi Matsuda
- Integrative Brain Imaging Center (IBIC), National Center of Neurology and Psychiatry, Tokyo, Japan
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95
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Toda S, Iguchi Y, Lin Z, Nishikawa H, Nagasawa T, Watanabe H, Minabe Y. Reconsidering Animal Models of Major Depressive Disorder in the Elderly. Front Aging Neurosci 2016; 8:188. [PMID: 27551264 PMCID: PMC4976092 DOI: 10.3389/fnagi.2016.00188] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2015] [Accepted: 07/20/2016] [Indexed: 11/15/2022] Open
Affiliation(s)
- Shigenobu Toda
- Department of Psychiatry and Neurobiology, Kanazawa UniversityKanazawa, Japan; Research Center for Child Mental Development, Kanazawa UniversityKanazawa, Japan; Hokuriku Dementia Professional Physician Training PlanKanazawa, Japan
| | - Yoshio Iguchi
- Department of Molecular Genetics, Institute of Biomedical Sciences, Fukushima Medical University Fukushima, Japan
| | - Ziqiao Lin
- Department of Psychiatry and Neurobiology, Kanazawa University Kanazawa, Japan
| | - Hiromi Nishikawa
- Department of Psychiatry and Neurobiology, Kanazawa University Kanazawa, Japan
| | - Tatsuya Nagasawa
- Department of Psychiatry and Neurobiology, Kanazawa UniversityKanazawa, Japan; Hokuriku Dementia Professional Physician Training PlanKanazawa, Japan
| | - Hirotaka Watanabe
- Department of Physiology, Keio University School of Medicine Tokyo, Japan
| | - Yoshio Minabe
- Department of Psychiatry and Neurobiology, Kanazawa UniversityKanazawa, Japan; Research Center for Child Mental Development, Kanazawa UniversityKanazawa, Japan; Hokuriku Dementia Professional Physician Training PlanKanazawa, Japan
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96
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Tang Y, Zhu Z, Liu Q, Li F, Yang J, Li F, Xing Y, Jia J. The efficacy of Cognitive training in patients with VAsCular Cognitive Impairment, No dEmentia (the Cog-VACCINE study): study protocol for a randomized controlled trial. Trials 2016; 17:392. [PMID: 27496126 PMCID: PMC4974771 DOI: 10.1186/s13063-016-1523-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2016] [Accepted: 07/14/2016] [Indexed: 01/04/2023] Open
Abstract
BACKGROUND Vascular cognitive impairment, no dementia (VCIND) refers to cognitive deficits associated with underlying vascular causes that fall short of a dementia diagnosis. There is currently no treatment for VCIND. Computerized cognitive training, which has significantly improved cognitive function in healthy older adults and patients with cognitive impairment has not yet been applied to VCIND. METHODS/DESIGN The proposed study is a three-center, double-blinded, randomized controlled trial that will include 60 patients with VCIND. The patients will be randomized to either a training or a control group. The intervention is internet-based cognitive training performed for 30 min over 35 sessions. Neuropsychological assessment and functional and structural MRI will be performed before and after 7 weeks training. Primary outcomes are global cognitive function and executive function. Secondary outcome measures are neuroplasticity changes measured by functional and structural MRI. DISCUSSION Applying an internet-based, multi-domain, adaptive program, this study aims to assess whether cognitive training improves cognitive abilities and neural plasticity in patients with subcortical VCIND. In addition to the comprehensive assessment of the participants by neuropsychological tests, cerebrovascular risk factors and apolipoprotein E genotyping, neuroplasticity will be used as an evaluation outcome in this study for, to our knowledge, the first time. The combination of functional and structural MRI and neuropsychological tests will have strong sensitivity in evaluating the effects of cognitive training and will also reveal the underlying mechanisms at work. TRIAL REGISTRATION ClinicalTrials.gov NCT02640716 . Retrospectively registered on 21 December 2015.
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Affiliation(s)
- Yi Tang
- Department of Neurology, Xuan Wu Hospital, Capital Medical University, 45 Changchun Street, Beijing, 100053, China.
| | - Zude Zhu
- Collaborative Innovation Center for Language Competence, Jiangsu Normal University, Xuzhou, Jiangsu, China
| | - Qing Liu
- Department of Neurology, Xuan Wu Hospital, Capital Medical University, 45 Changchun Street, Beijing, 100053, China
| | - Fang Li
- Department of Geriatric Medicine, Fu Xing Hospital, Capital Medical University, Beijing, China
| | - Jianwei Yang
- Department of Neurology, Xuan Wu Hospital, Capital Medical University, 45 Changchun Street, Beijing, 100053, China
| | - Fangyu Li
- Department of Neurology, Xuan Wu Hospital, Capital Medical University, 45 Changchun Street, Beijing, 100053, China
| | - Yi Xing
- Department of Neurology, Xuan Wu Hospital, Capital Medical University, 45 Changchun Street, Beijing, 100053, China
| | - Jianping Jia
- Department of Neurology, Xuan Wu Hospital, Capital Medical University, 45 Changchun Street, Beijing, 100053, China. .,Department of Neurology, Beijing Friendship Hospital, Capital Medical University, Beijing, China.
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97
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Schättin A, Baur K, Stutz J, Wolf P, de Bruin ED. Effects of Physical Exercise Combined with Nutritional Supplements on Aging Brain Related Structures and Functions: A Systematic Review. Front Aging Neurosci 2016; 8:161. [PMID: 27458371 PMCID: PMC4933713 DOI: 10.3389/fnagi.2016.00161] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Accepted: 06/20/2016] [Indexed: 01/12/2023] Open
Abstract
Age-related decline in gray and white brain matter goes together with cognitive depletion. To influence cognitive functioning in elderly, several types of physical exercise and nutritional intervention have been performed. This paper systematically reviews the potential additive and complementary effects of nutrition/nutritional supplements and physical exercise on cognition. The search strategy was developed for EMBASE, Medline, PubMed, Cochrane, CINAHL, and PsycInfo databases and focused on the research question: “Is the combination of physical exercise with nutrition/nutritional supplementation more effective than nutrition/nutritional supplementation or physical exercise alone in effecting on brain structure, metabolism, and/or function?” Both mammalian and human studies were included. In humans, randomized controlled trials that evaluated the effects of nutrition/nutritional supplements and physical exercise on cognitive functioning and associated parameters in healthy elderly (>65 years) were included. The systematic search included English and German language literature without any limitation of publication date. The search strategy yielded a total of 3129 references of which 67 studies met the inclusion criteria; 43 human and 24 mammalian, mainly rodent, studies. Three out of 43 human studies investigated a nutrition/physical exercise combination and reported no additive effects. In rodent studies, additive effects were found for docosahexaenoic acid supplementation when combined with physical exercise. Although feasible combinations of physical exercise/nutritional supplements are available for influencing the brain, only a few studies evaluated which possible combinations of nutrition/nutritional supplementation and physical exercise might have an effect on brain structure, metabolism and/or function. The reason for no clear effects of combinatory approaches in humans might be explained by the misfit between the combinations of nutritional methods with the physical interventions in the sense that they were not selected on sharing of similar neuronal mechanisms. Based on the results from this systematic review, future human studies should focus on the combined effect of docosahexaenoic acid supplementation and physical exercise that contains elements of (motor) learning.
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Affiliation(s)
- Alexandra Schättin
- Department of Health Sciences and Technology, Institute of Human Movement Sciences and Sport, Swiss Federal Institute of Technology (ETH Zurich) Zurich, Switzerland
| | - Kilian Baur
- Sensory-Motor Systems Lab, Department of Health Sciences and Technology, Swiss Federal Institute of Technology (ETH Zurich) Zurich, Switzerland
| | - Jan Stutz
- Department of Health Sciences and Technology, Institute of Human Movement Sciences and Sport, Swiss Federal Institute of Technology (ETH Zurich) Zurich, Switzerland
| | - Peter Wolf
- Sensory-Motor Systems Lab, Department of Health Sciences and Technology, Swiss Federal Institute of Technology (ETH Zurich) Zurich, Switzerland
| | - Eling D de Bruin
- Department of Health Sciences and Technology, Institute of Human Movement Sciences and Sport, Swiss Federal Institute of Technology (ETH Zurich) Zurich, Switzerland
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98
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Perceval G, Flöel A, Meinzer M. Can transcranial direct current stimulation counteract age-associated functional impairment? Neurosci Biobehav Rev 2016; 65:157-72. [DOI: 10.1016/j.neubiorev.2016.03.028] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Revised: 02/05/2016] [Accepted: 03/14/2016] [Indexed: 12/21/2022]
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99
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Accelerated Transcranial Direct Current Stimulation in Alzheimer's Disease: A Case Study. Brain Stimul 2016; 9:634-5. [PMID: 27247262 DOI: 10.1016/j.brs.2016.04.018] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2016] [Revised: 04/24/2016] [Accepted: 04/26/2016] [Indexed: 11/22/2022] Open
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100
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Are morphological changes necessary to mediate the therapeutic effects of electroconvulsive therapy? Eur Arch Psychiatry Clin Neurosci 2016; 266:261-7. [PMID: 26260901 DOI: 10.1007/s00406-015-0631-z] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Accepted: 08/03/2015] [Indexed: 12/14/2022]
Abstract
The neurotrophic hypothesis has become the favorite model to explain the antidepressant properties of electroconvulsive therapy (ECT). It is based on the assumption that a restoration of previously defective neural networks drives therapeutic effects. Recent data in rather young patients suggest that neurotrophic effects of ECT might be detectable by diffusion tensor imaging. We here aimed to investigate whether the therapeutic response to ECT necessarily goes along with mesoscopic effects in gray matter (GM) or white matter (WM) in our patients in advanced age. Patients (n = 21, 15 males and 7 females) suffering from major depressive disorder were treated with ECT. Before the start of treatment and after the completion of the index series, they underwent magnetic resonance imaging, including a diffusion-weighed sequence. We used voxel-based morphometry to assess GM changes and tract-based spatial statistics and an SPM-based whole-brain analysis to detect WM changes in the course of treatment. Patients significantly improved clinically during the course of ECT. This was, however, not accompanied by GM or WM changes. This result challenges the notion that mesoscopic brain structure changes are an obligatory prerequisite for the antidepressant effects of ECT.
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