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Kelly ME, McHugh Power J, Parra MA, Hannigan C. Editorial: Brain health: risk, resilience and reserve. Front Psychol 2024; 15:1386516. [PMID: 38601823 PMCID: PMC11005790 DOI: 10.3389/fpsyg.2024.1386516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Accepted: 03/15/2024] [Indexed: 04/12/2024] Open
Affiliation(s)
- Michelle E. Kelly
- Department of Psychology, National College of Ireland, Dublin, Ireland
| | - Joanna McHugh Power
- Department of Psychology, Maynooth University, Maynooth, County Kildare, Ireland
| | - Mario A. Parra
- Psychological Sciences and Health, University of Strathclyde, Glasgow, United Kingdom
| | - Caoimhe Hannigan
- Department of Psychology, National College of Ireland, Dublin, Ireland
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Roy O, Moshfeghi Y, Ibanez A, Lopera F, Parra MA, Smith KM. FAST functional connectivity implicates P300 connectivity in working memory deficits in Alzheimer's disease. ArXiv 2024:arXiv:2402.18489v1. [PMID: 38463502 PMCID: PMC10925378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 03/12/2024]
Abstract
Measuring transient functional connectivity is an important challenge in Electroencephalogram (EEG) research. Here, the rich potential for insightful, discriminative information of brain activity offered by high temporal resolution is confounded by the inherent noise of the medium and the spurious nature of correlations computed over short temporal windows. We propose a novel methodology to overcome these problems called Filter Average Short-Term (FAST) functional connectivity. First, long-term, stable, functional connectivity is averaged across an entire study cohort for a given pair of Visual Short Term Memory (VSTM) tasks. The resulting average connectivity matrix, containing information on the strongest general connections for the tasks, is used as a filter to analyse the transient high temporal resolution functional connectivity of individual subjects. In simulations, we show that this method accurately discriminates differences in noisy Event-Related Potentials (ERPs) between two conditions where standard connectivity and other comparable methods fail. We then apply this to analyse activity related to visual short-term memory binding deficits in two cohorts of familial and sporadic Alzheimer's disease. Reproducible significant differences were found in the binding task with no significant difference in the shape task in the P300 ERP range. This allows new sensitive measurements of transient functional connectivity, which can be implemented to obtain results of clinical significance.
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Prado P, Medel V, Gonzalez-Gomez R, Sainz-Ballesteros A, Vidal V, Santamaría-García H, Moguilner S, Mejia J, Slachevsky A, Behrens MI, Aguillon D, Lopera F, Parra MA, Matallana D, Maito MA, Garcia AM, Custodio N, Funes AÁ, Piña-Escudero S, Birba A, Fittipaldi S, Legaz A, Ibañez A. Author Correction: The BrainLat project, a multimodal neuroimaging dataset of neurodegeneration from underrepresented backgrounds. Sci Data 2024; 11:19. [PMID: 38168123 PMCID: PMC10761837 DOI: 10.1038/s41597-023-02870-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2024] Open
Affiliation(s)
- Pavel Prado
- Latin American Brain Health Institute (BrainLat), Universidad Adolfo Ibáñez, Santiago, Chile
- Escuela de Fonoaudiología, Facultad de Odontología y Ciencias de la Rehabilitación, Universidad San Sebastián, Santiago, Chile
| | - Vicente Medel
- Latin American Brain Health Institute (BrainLat), Universidad Adolfo Ibáñez, Santiago, Chile
| | - Raul Gonzalez-Gomez
- Latin American Brain Health Institute (BrainLat), Universidad Adolfo Ibáñez, Santiago, Chile
| | | | - Victor Vidal
- Latin American Brain Health Institute (BrainLat), Universidad Adolfo Ibáñez, Santiago, Chile
| | - Hernando Santamaría-García
- PhD Neuroscience Program, Physiology and Psychiatry Departments, Pontificia Universidad Javeriana, Bogotá, Colombia
- Memory and Cognition Center Intellectus, Hospital Universitario San Ignacio, Bogotá, Colombia
- Global Brain Health Institute, University of California San Francisco, San Francisco, USA
- Global Brain Health Institute, Trinity College Dublin, Dublin, Ireland
| | - Sebastian Moguilner
- Latin American Brain Health Institute (BrainLat), Universidad Adolfo Ibáñez, Santiago, Chile
- Cognitive Neuroscience Center (CNC), Universidad de San Andrés & CONICET, Buenos Aires, Argentina
- Department of Neurology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - Jhony Mejia
- Latin American Brain Health Institute (BrainLat), Universidad Adolfo Ibáñez, Santiago, Chile
- Departamento de Ingeniería Biomédica, Universidad de Los Andes, Bogotá, Colombia
- Memory and Aging Clinic, University of California San Francisco, San Francisco, USA
| | - Andrea Slachevsky
- Neuropsychology and Clinical Neuroscience Laboratory (LANNEC), Physiopathology Department - Institute of Biomedical Sciences (ICBM), Neurocience and East Neuroscience Departments, Faculty of Medicine, University of Chile, Santiago de Chile, Chile
- Geroscience Center for Brain Health and Metabolism, (GERO), Santiago de Chile, Chile
- Memory and Neuropsychiatric Center (CMYN), Memory Unit - Neurology Department, Hospital del Salvador and Faculty of Medicine, University of Chile, Santiago de Chile, Chile
- Servicio de Neurología, Departamento de Medicina, Clínica Alemana-Universidad del Desarrollo, Santiago de Chile, Chile
| | - Maria Isabel Behrens
- Centro de Investigación Clínica Avanzada (CICA), Facultad de Medicina-Hospital Clínico, Universidad de Chile, Independencia, Santiago, 8380453, Chile
- Departamento de Neurología y Neurocirugía, Hospital Clínico Universidad de Chile, Independencia, Santiago, 8380430, Chile
- Departamento de Neurociencia, Facultad de Medicina, Universidad de Chile, Independencia, Santiago, 8380453, Chile
- Departamento de Neurología y Psiquiatría, Clínica Alemana-Universidad del Desarrollo, Santiago, 8370065, Chile
| | - David Aguillon
- Grupo de Neurociencias de Antioquia de la Universidad de Antioquia, Medellín, Colombia
| | - Francisco Lopera
- Grupo de Neurociencias de Antioquia de la Universidad de Antioquia, Medellín, Colombia
| | - Mario A Parra
- School of Psychological Sciences and Health, University of Strathclyde, Glasgow, United Kingdom
| | - Diana Matallana
- PhD Neuroscience Program, Physiology and Psychiatry Departments, Pontificia Universidad Javeriana, Bogotá, Colombia
- Memory and Cognition Center Intellectus, Hospital Universitario San Ignacio, Bogotá, Colombia
- Mental Health Department, Hospital Universitario Fundación Santa Fe de Bogotá, Memory Clinic, Bogotá, Colombia
| | - Marcelo Adrián Maito
- Latin American Brain Health Institute (BrainLat), Universidad Adolfo Ibáñez, Santiago, Chile
- Cognitive Neuroscience Center (CNC), Universidad de San Andrés & CONICET, Buenos Aires, Argentina
| | - Adolfo M Garcia
- Global Brain Health Institute, University of California San Francisco, San Francisco, USA
- Cognitive Neuroscience Center (CNC), Universidad de San Andrés & CONICET, Buenos Aires, Argentina
- Departamento de Lingüística y Literatura, Facultad de Humanidades, Universidad de Santiago de Chile, Santiago, Chile
| | - Nilton Custodio
- Unit Cognitive Impairment and Dementia Prevention, Peruvian Institute of Neurosciences, Lima, Peru
| | - Alberto Ávila Funes
- Geriatrics Department, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | - Stefanie Piña-Escudero
- Global Brain Health Institute, University of California San Francisco, San Francisco, USA
- Memory and Aging Clinic, University of California San Francisco, San Francisco, USA
| | - Agustina Birba
- Latin American Brain Health Institute (BrainLat), Universidad Adolfo Ibáñez, Santiago, Chile
- Cognitive Neuroscience Center (CNC), Universidad de San Andrés & CONICET, Buenos Aires, Argentina
- Instituto Universitario de Neurociencia, Universidad de La Laguna, Tenerife, Spain
- Facultad de Psicología, Universidad de La Laguna, Tenerife, Spain
| | - Sol Fittipaldi
- Latin American Brain Health Institute (BrainLat), Universidad Adolfo Ibáñez, Santiago, Chile
- Global Brain Health Institute, Trinity College Dublin, Dublin, Ireland
- Cognitive Neuroscience Center (CNC), Universidad de San Andrés & CONICET, Buenos Aires, Argentina
| | - Agustina Legaz
- Latin American Brain Health Institute (BrainLat), Universidad Adolfo Ibáñez, Santiago, Chile
- Cognitive Neuroscience Center (CNC), Universidad de San Andrés & CONICET, Buenos Aires, Argentina
| | - Agustín Ibañez
- Latin American Brain Health Institute (BrainLat), Universidad Adolfo Ibáñez, Santiago, Chile.
- Global Brain Health Institute, University of California San Francisco, San Francisco, USA.
- Global Brain Health Institute, Trinity College Dublin, Dublin, Ireland.
- Cognitive Neuroscience Center (CNC), Universidad de San Andrés & CONICET, Buenos Aires, Argentina.
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Parra MA, Gazes Y, Habeck C, Stern Y. Exploring the Association between Amyloid-β and Memory Markers for Alzheimer's Disease in Cognitively Unimpaired Older Adults. J Prev Alzheimers Dis 2024; 11:339-347. [PMID: 38374740 PMCID: PMC11007669 DOI: 10.14283/jpad.2024.11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2024]
Abstract
BACKGROUND Memory tests vary in their sensitivity for detection of pre-symptomatic Alzheimer's disease (AD). The Visual Short-Term Memory Binding Test (VSTMBT) identifies AD-related performance deficits in older adults who are otherwise cognitively unimpaired. OBJECTIVE We investigated the association of this psychometric measure with brain amyloidosis and atrophy. DESIGN Cross-sectional mixed and correlational. SETTING Cognitive Reserve Study from Columbia University. PARTICIPANTS a sample of 39 cognitively unimpaired older adults (Age: M=65.3, SD=3.07) was obtained from the above study. MEASUREMENTS Extensive neuropsychological and neuroimaging (MRI and amyloid-β PET) assessments were carried out. RESULTS Performance on the VSTMBT allowed us to split the sample into Low Binding Cost (LBC, N=21) and High Binding Cost (HBC, N=18). Groups were matched according to age [p=0.702], years of education [0.071], and sex [p=0.291]. HBC's performance was comparable to that seen in symptomatic AD. Groups only differed in their amyloid-β deposition on PET in regions of the right ventral stream linked to visual cognition and affected early in AD pathogenesis (lateral-occipital cortex, p = 0.008; fusiform gyrus, p = 0.017; and entorhinal cortex, p = 0.046). Other regions known to be linked to low-level visual integration function also revealed increased amyloid-β deposition in HBC. CONCLUSIONS VSTMB deficits are associated with neuropathogenesis (i.e., amyloid-β deposition) in the earliest affected regions in pre-symptomatic AD. The VSTMB test holds potential for the identification of cognitively unimpaired older adults with very early AD pathogenesis and may thus be a useful tool for early intervention trials or other forms of clinical research.
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Affiliation(s)
- M A Parra
- Dr Mario A Parra, Department of Psychological Sciences and Health, University of Strathclyde, Graham Hills Building, 40 George Street, Glasgow, G1 1QE, Room GH521, Tel.+44 (0) 141 548 4362,
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Prado P, Medel V, Gonzalez-Gomez R, Sainz-Ballesteros A, Vidal V, Santamaría-García H, Moguilner S, Mejia J, Slachevsky A, Behrens MI, Aguillon D, Lopera F, Parra MA, Matallana D, Maito MA, Garcia AM, Custodio N, Funes AÁ, Piña-Escudero S, Birba A, Fittipaldi S, Legaz A, Ibañez A. The BrainLat project, a multimodal neuroimaging dataset of neurodegeneration from underrepresented backgrounds. Sci Data 2023; 10:889. [PMID: 38071313 PMCID: PMC10710425 DOI: 10.1038/s41597-023-02806-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Accepted: 11/30/2023] [Indexed: 12/18/2023] Open
Abstract
The Latin American Brain Health Institute (BrainLat) has released a unique multimodal neuroimaging dataset of 780 participants from Latin American. The dataset includes 530 patients with neurodegenerative diseases such as Alzheimer's disease (AD), behavioral variant frontotemporal dementia (bvFTD), multiple sclerosis (MS), Parkinson's disease (PD), and 250 healthy controls (HCs). This dataset (62.7 ± 9.5 years, age range 21-89 years) was collected through a multicentric effort across five Latin American countries to address the need for affordable, scalable, and available biomarkers in regions with larger inequities. The BrainLat is the first regional collection of clinical and cognitive assessments, anatomical magnetic resonance imaging (MRI), resting-state functional MRI (fMRI), diffusion-weighted MRI (DWI), and high density resting-state electroencephalography (EEG) in dementia patients. In addition, it includes demographic information about harmonized recruitment and assessment protocols. The dataset is publicly available to encourage further research and development of tools and health applications for neurodegeneration based on multimodal neuroimaging, promoting the assessment of regional variability and inclusion of underrepresented participants in research.
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Affiliation(s)
- Pavel Prado
- Latin American Brain Health Institute (BrainLat), Universidad Adolfo Ibáñez, Santiago, Chile
- Escuela de Fonoaudiología, Facultad de Odontología y Ciencias de la Rehabilitación, Universidad San Sebastián, Santiago, Chile
| | - Vicente Medel
- Latin American Brain Health Institute (BrainLat), Universidad Adolfo Ibáñez, Santiago, Chile
| | - Raul Gonzalez-Gomez
- Latin American Brain Health Institute (BrainLat), Universidad Adolfo Ibáñez, Santiago, Chile
| | | | - Victor Vidal
- Latin American Brain Health Institute (BrainLat), Universidad Adolfo Ibáñez, Santiago, Chile
| | - Hernando Santamaría-García
- PhD Neuroscience Program, Physiology and Psychiatry Departments, Pontificia Universidad Javeriana, Bogotá, Colombia
- Memory and Cognition Center Intellectus, Hospital Universitario San Ignacio, Bogotá, Colombia
- Global Brain Health Institute, University of California San Francisco, San Francisco, USA
- Global Brain Health Institute, Trinity College Dublin, Dublin, Ireland
| | - Sebastian Moguilner
- Latin American Brain Health Institute (BrainLat), Universidad Adolfo Ibáñez, Santiago, Chile
- Cognitive Neuroscience Center (CNC), Universidad de San Andrés & CONICET, Buenos Aires, Argentina
- Department of Neurology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - Jhony Mejia
- Latin American Brain Health Institute (BrainLat), Universidad Adolfo Ibáñez, Santiago, Chile
- Departamento de Ingeniería Biomédica, Universidad de Los Andes, Bogotá, Colombia
- Memory and Aging Clinic, University of California San Francisco, San Francisco, USA
| | - Andrea Slachevsky
- Neuropsychology and Clinical Neuroscience Laboratory (LANNEC), Physiopathology Department - Institute of Biomedical Sciences (ICBM), Neurocience and East Neuroscience Departments, Faculty of Medicine, University of Chile, Santiago de Chile, Chile
- Geroscience Center for Brain Health and Metabolism, (GERO), Santiago de Chile, Chile
- Memory and Neuropsychiatric Center (CMYN), Memory Unit - Neurology Department, Hospital del Salvador and Faculty of Medicine, University of Chile, Santiago de Chile, Chile
- Servicio de Neurología, Departamento de Medicina, Clínica Alemana-Universidad del Desarrollo, Santiago de Chile, Chile
| | - Maria Isabel Behrens
- Centro de Investigación Clínica Avanzada (CICA), Facultad de Medicina-Hospital Clínico, Universidad de Chile, Independencia, Santiago, 8380453, Chile
- Departamento de Neurología y Neurocirugía, Hospital Clínico Universidad de Chile, Independencia, Santiago, 8380430, Chile
- Departamento de Neurociencia, Facultad de Medicina, Universidad de Chile, Independencia, Santiago, 8380453, Chile
- Departamento de Neurología y Psiquiatría, Clínica Alemana-Universidad del Desarrollo, Santiago, 8370065, Chile
| | - David Aguillon
- Grupo de Neurociencias de Antioquia de la Universidad de Antioquia, Medellín, Colombia
| | - Francisco Lopera
- Grupo de Neurociencias de Antioquia de la Universidad de Antioquia, Medellín, Colombia
| | - Mario A Parra
- School of Psychological Sciences and Health, University of Strathclyde, Glasgow, United Kingdom
| | - Diana Matallana
- PhD Neuroscience Program, Physiology and Psychiatry Departments, Pontificia Universidad Javeriana, Bogotá, Colombia
- Memory and Cognition Center Intellectus, Hospital Universitario San Ignacio, Bogotá, Colombia
- Mental Health Department, Hospital Universitario Fundación Santa Fe de Bogotá, Memory Clinic, Bogotá, Colombia
| | - Marcelo Adrián Maito
- Latin American Brain Health Institute (BrainLat), Universidad Adolfo Ibáñez, Santiago, Chile
- Cognitive Neuroscience Center (CNC), Universidad de San Andrés & CONICET, Buenos Aires, Argentina
| | - Adolfo M Garcia
- Global Brain Health Institute, University of California San Francisco, San Francisco, USA
- Cognitive Neuroscience Center (CNC), Universidad de San Andrés & CONICET, Buenos Aires, Argentina
- Departamento de Lingüística y Literatura, Facultad de Humanidades, Universidad de Santiago de Chile, Santiago, Chile
| | - Nilton Custodio
- Unit Cognitive Impairment and Dementia Prevention, Peruvian Institute of Neurosciences, Lima, Peru
| | - Alberto Ávila Funes
- Geriatrics Department, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | - Stefanie Piña-Escudero
- Global Brain Health Institute, University of California San Francisco, San Francisco, USA
- Memory and Aging Clinic, University of California San Francisco, San Francisco, USA
| | - Agustina Birba
- Latin American Brain Health Institute (BrainLat), Universidad Adolfo Ibáñez, Santiago, Chile
- Cognitive Neuroscience Center (CNC), Universidad de San Andrés & CONICET, Buenos Aires, Argentina
- Instituto Universitario de Neurociencia, Universidad de La Laguna, Tenerife, Spain
- Facultad de Psicología, Universidad de La Laguna, Tenerife, Spain
| | - Sol Fittipaldi
- Latin American Brain Health Institute (BrainLat), Universidad Adolfo Ibáñez, Santiago, Chile
- Global Brain Health Institute, Trinity College Dublin, Dublin, Ireland
- Cognitive Neuroscience Center (CNC), Universidad de San Andrés & CONICET, Buenos Aires, Argentina
| | - Agustina Legaz
- Latin American Brain Health Institute (BrainLat), Universidad Adolfo Ibáñez, Santiago, Chile
- Cognitive Neuroscience Center (CNC), Universidad de San Andrés & CONICET, Buenos Aires, Argentina
| | - Agustín Ibañez
- Latin American Brain Health Institute (BrainLat), Universidad Adolfo Ibáñez, Santiago, Chile.
- Global Brain Health Institute, University of California San Francisco, San Francisco, USA.
- Global Brain Health Institute, Trinity College Dublin, Dublin, Ireland.
- Cognitive Neuroscience Center (CNC), Universidad de San Andrés & CONICET, Buenos Aires, Argentina.
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Loughrey DG, Jordan C, Ibanez A, Parra MA, Lawlor BA, Reilly RB. Age-related hearing loss associated with differences in the neural correlates of feature binding in visual working memory. Neurobiol Aging 2023; 132:233-245. [PMID: 37866083 DOI: 10.1016/j.neurobiolaging.2023.09.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 08/09/2023] [Accepted: 09/25/2023] [Indexed: 10/24/2023]
Abstract
The underlying neural mechanisms underpinning the association between age-related hearing loss (ARHL) and dementia remain unclear. A limitation has been the lack of functional neuroimaging studies in ARHL cohorts to help clarify this relationship. In the present study, we investigated the neural correlates of feature binding in visual working memory with ARHL (controls = 14, mild HL = 21, and moderate or greater HL = 23). Participants completed a visual change detection task assessing feature binding while their neural activity was synchronously recorded via high-density electroencephalography. There was no difference in accuracy scores for ARHL groups compared to controls. There was increased electrophysiological activity in those with ARHL, particularly in components indexing the earlier stages of visual cognitive processing. This activity was more pronounced with more severe ARHL and was associated with maintained feature binding. Source space (sLORETA) analyses indicated greater activity in networks modulated by frontoparietal and temporal regions. Our results demonstrate there may be increased involvement of neurocognitive control networks to maintain lower-order neurocognitive processing disrupted by ARHL.
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Affiliation(s)
- David G Loughrey
- Global Brain Health Institute, Trinity College, The University of Dublin, Ireland; Global Brain Health Institute, University of California San Francisco, San Francisco, CA, USA; Trinity College Institute of Neuroscience, Trinity College, The University of Dublin, Ireland.
| | - Catherine Jordan
- Global Brain Health Institute, Trinity College, The University of Dublin, Ireland; Global Brain Health Institute, University of California San Francisco, San Francisco, CA, USA
| | - Agustin Ibanez
- Global Brain Health Institute, Trinity College, The University of Dublin, Ireland; Global Brain Health Institute, University of California San Francisco, San Francisco, CA, USA; Cognitive Neuroscience Center, University of San Andrés, Buenos Aires, Argentina; Latin American Brain Health Institute (BrainLat), Universidad Adolfo Ibáñez, Santiago, Chile
| | - Mario A Parra
- School of Psychological Sciences and Health, University of Strathclyde, Glasgow, UK
| | - Brian A Lawlor
- Global Brain Health Institute, Trinity College, The University of Dublin, Ireland; Global Brain Health Institute, University of California San Francisco, San Francisco, CA, USA
| | - Richard B Reilly
- Trinity College Institute of Neuroscience, Trinity College, The University of Dublin, Ireland; Trinity Centre for Biomedical Engineering, Trinity College, The University of Dublin, Ireland; School of Engineering, Trinity College, The University of Dublin, Ireland; School of Medicine, Trinity College, The University of Dublin, Ireland
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Forno G, Parra MA, Thumala D, Villagra R, Cerda M, Zitko P, Ibañez A, Lillo P, Slachevsky A. The "when" matters: Evidence from memory markers in the clinical continuum of Alzheimer's disease. Neuropsychology 2023; 37:753-768. [PMID: 37227845 PMCID: PMC10522796 DOI: 10.1037/neu0000891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023] Open
Abstract
OBJECTIVE Cognitive assessment able to detect impairments in the early neuropathological stages of Alzheimer's disease (AD) is urgently needed. The visual short-term memory binding task (VSTMBT) and the Free and Cued Selective Reminding Test (FCSRT) have been recommended by the neurodegenerative disease working group as promising tests to aid in the early detection of AD. In this study, we investigated their complementary value across the clinical stages of the AD continuum. METHOD One hundred and seventeen older adults with subjective cognitive complaint (SCC), 79 with mild cognitive impairment (MCI), 31 patients with AD dementia (ADD), and 37 cognitively unimpaired (CU) subjects, underwent assessment with the VSTMBT and the picture version of the Spanish FCSRT. RESULTS After controlling for multiple comparisons, significant differences were found across groups. The VSTMBT was the only test that "marginally" differentiated between CU and SCC (d = 0.47, p = .052). Moreover, whereas the FCSRT showed a gradient (CU = SCC) > MCI > ADD, the VSTMBT gradient was CU > SCC > (MCI = ADD) suggesting that conjunctive binding deficits assessed by the latter may be sensitive to the very early stages of the disease. CONCLUSIONS Our results suggest that the VSTMBT and the FCSRT are sensitive to the clinical continuum of AD. Whereas the former detects changes in the early prodromal stages, the latter is more sensitive to the advanced prodromal stages of AD. These novel tests can aid in the early detection, monitor disease progression and response to treatment, and thus support drug development programs. (PsycInfo Database Record (c) 2023 APA, all rights reserved).
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Affiliation(s)
- Gonzalo Forno
- School of Psychology, Universidad de los Andes, Santiago, Chile
- Center for Brain Health and Metabolism (GERO), Santiago, Chile
| | - Mario A. Parra
- School of Psychological Sciences and Health, University of Strathclyde, Glasgow, UK
| | - Daniela Thumala
- Center for Brain Health and Metabolism (GERO), Santiago, Chile
- Psychology Department, Faculty of Social Sciences, University of Chile, Santiago, Chile
- Interuniversity Center on Healthy Aging (Plan to Strengthen State Universities, Chilean Ministry of Education RED21993). Santiago, Chile
| | - Roque Villagra
- Center for Brain Health and Metabolism (GERO), Santiago, Chile
- Centro de Parkinson (CENPAR), Santiago, Chile
| | - Mauricio Cerda
- Programa de Biología Integrativa, Instituto de Ciencias Biomédicas y Centro de Informática Médica y Telemedicina, Facultad de Medicina, Universidad de Chile
| | - Pedro Zitko
- Center for Brain Health and Metabolism (GERO), Santiago, Chile
- Departamento de Salud Global, Escuela de Salud Pública, Universidad de Chile
- Department of Health Services & Population Research, IoPPN, King’s College London
| | - Agustín Ibañez
- Latin American Brain Health Institute (BrainLat), Universidad Adolfo Ibáñez, Santiago, Chile
- Cognitive Neuroscience Center (CNC), Universidad de San Andrés, Buenos Aires, and National Scientific and Technical Research Council (CONICET), Buenos Aires, Argentina
- Global Brain Health Institute (GBHI), University of California San Francisco (UCSF), California, US; & Trinity College Dublin (TCD), Dublin, Ireland
| | - Patricia Lillo
- Center for Brain Health and Metabolism (GERO), Santiago, Chile
- Departamento de Neurología Sur, Facultad de Medicina, Universidad de Chile
- Unidad de Neurología, Hospital San José, Santiago, Chile
| | - Andrea Slachevsky
- Center for Brain Health and Metabolism (GERO), Santiago, Chile
- Neuropsychology and Clinical Neuroscience Laboratory (LANNEC), Physiopathology Department, Institute of Biomedical Science (ICBM), Neuroscience and East Neuroscience Department, Faculty of Medicine, University of Chile, Santiago, Chile
- Memory and Neuropsychiatric Clinic, Neurology Department, Hospital del Salvador, SSMO & Faculty of Medicine, University of Chile, Santiago, Chile
- Servicio de Neurología, Departamento de Medicina, Clínica Alemana-Universidad del Desarrollo, Santiago, Chile
- East Neuroscience Department, Faculty of Medicine, University of Chile, Santiago, Chile
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Cecchini MA, Parra MA, Brazzelli M, Logie RH, Della Sala S. Short-term memory conjunctive binding in Alzheimer's disease: A systematic review and meta-analysis. Neuropsychology 2023; 37:769-789. [PMID: 35617251 DOI: 10.1037/neu0000825] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
OBJECTIVE Short-term memory (STM) binding tests assess the ability to temporarily hold conjunctions between surface features, such as objects and their colors (i.e., feature binding condition), relative to the ability to hold the individual features (i.e., single feature condition). Impairments in performance of these tests have been considered cognitive markers of Alzheimer's disease (AD). The objective of the present study was to conduct a meta-analysis of results from STM binding tests used in the assessment of samples mapped along the AD clinical continuum. METHOD We searched PubMed, Scopus, and Web of Science for articles that assessed patients with AD (from preclinical to dementia) using the STM binding tests and compared their results with those of controls. From each relevant article, we extracted the number of participants, the mean and standard deviations from single feature and of feature binding conditions. Results across studies were combined using standardized mean differences (effect sizes) to produce overall estimates of effect. RESULTS The feature binding condition of the STM binding showed large effects in all stages of AD. However, small sample sizes across studies, the presence of moderate to high heterogeneity and cross-sectional, case-controls designs decreased our confidence in the current evidence. CONCLUSIONS To be considered as a cognitive marker for AD, properly powered longitudinal designs and studies that clearly relate conjunctive memory tests with biomarkers (amyloid and tau) are still needed. (PsycInfo Database Record (c) 2023 APA, all rights reserved).
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Affiliation(s)
| | - Mario A Parra
- School of Psychological Sciences and Health, University of Strathclyde
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Martínez-Pernía D, Olavarría L, Fernández-Manjón B, Cabello V, Henríquez F, Robert P, Alvarado L, Barría S, Antivilo A, Velasquez J, Cerda M, Farías G, Torralva T, Ibáñez A, Parra MA, Gilbert S, Slachevsky A. The limitations and challenges in the assessment of executive dysfunction associated with real-world functioning: The opportunity of serious games. Appl Neuropsychol Adult 2023:1-17. [PMID: 36827177 DOI: 10.1080/23279095.2023.2174438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
Abstract
Nowadays, there is a broad range of methods for detecting and evaluating executive dysfunction ranging from clinical interview to neuropsychological evaluation. Nevertheless, a critical issue of these assessments is the lack of correspondence of the neuropsychological test's results with real-world functioning. This paper proposes serious games as a new framework to improve the neuropsychological assessment of real-world functioning. We briefly discuss the contribution and limitations of current methods of evaluation of executive dysfunction (paper-and-pencil tests, naturalistic observation methods, and Information and Communications Technologies) to inform on daily life functioning. Then, we analyze what are the limitations of these methods to predict real-world performance: (1) A lack of appropriate instruments to investigate the complexity of real-world functioning, (2) the vast majority of neuropsychological tests assess well-structured tasks, and (3) measurement of behaviors are based on simplistic data collection and statistical analysis. This work shows how serious games offer an opportunity to develop more efficient tools to detect executive dysfunction in everyday life contexts. Serious games provide meaningful narrative stories and virtual or real environments that immerse the user in natural and social environments with social interactions. In those highly interactive game environments, the player needs to adapt his/her behavioral performance to novel and ill-structured tasks which are suited for collecting user interaction evidence. Serious games offer a novel opportunity to develop better tools to improve diagnosis of the executive dysfunction in everyday life contexts. However, more research is still needed to implement serious games in everyday clinical practice.
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Affiliation(s)
- David Martínez-Pernía
- Center for Social and Cognitive Neuroscience (CSCN), School of Psychology, Universidad Adolfo Ibáñez, Santiago, Chile
- Geroscience Center for Brain Health and Metabolism (GERO), Santiago, Chile
- Memory and Neuropsychiatric Center (CMYN), Memory Unit - Neurology Department, Hospital del Salvador and Faculty of Medicine, University of Chile, Santiago, Chile
| | - Loreto Olavarría
- Memory and Neuropsychiatric Center (CMYN), Memory Unit - Neurology Department, Hospital del Salvador and Faculty of Medicine, University of Chile, Santiago, Chile
| | | | - Victoria Cabello
- Neuropsychology and Clinical Neuroscience Laboratory (LANNEC), Physiopathology Department - Biomedical Science Institute, Neuroscience and East Neuroscience Departments, Faculty of Medicine, University of Chile, Santiago, Chile
| | - Fernando Henríquez
- Geroscience Center for Brain Health and Metabolism (GERO), Santiago, Chile
- Memory and Neuropsychiatric Center (CMYN), Memory Unit - Neurology Department, Hospital del Salvador and Faculty of Medicine, University of Chile, Santiago, Chile
- Neuropsychology and Clinical Neuroscience Laboratory (LANNEC), Physiopathology Department - Biomedical Science Institute, Neuroscience and East Neuroscience Departments, Faculty of Medicine, University of Chile, Santiago, Chile
- Laboratory for Cognitive and Evolutionary Neuroscience (LaNCE), Department of Psychiatry, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Philippe Robert
- Cognition Behavior Technology (CoBTeK) Lab, FRIS-Université Côte d'Azur, Nice, France
| | - Luís Alvarado
- Departamento de Psiquiatría y Salud Mental Norte, Universidad de Chile, Santiago, Chile
| | - Silvia Barría
- Departamento de Ciencias Neurologicas Oriente, Facultad de Medicina, Universidad de Chile, and Servicio de Neurología, Hospital del Salvador, Santiago, Chile
| | - Andrés Antivilo
- Departamento de Ciencias Neurologicas Oriente, Facultad de Medicina, Universidad de Chile, and Servicio de Neurología, Hospital del Salvador, Santiago, Chile
| | - Juan Velasquez
- Facultad de Ciencias Físicas y Matemáticas, Web Intelligence Center, Universidad de Chile, Santiago, Chile
- Department of Industrial Engineering, Faculty of Physical and Mathematical Sciences, Instituto Sistemas Complejos de Ingeniería (ISCI), University of Chile, Santiago, Chile
| | - Mauricio Cerda
- Integrative Biology Program, Institute of Biomedical Sciences, and Center for Medical Informatics and Telemedicine, Faculty of Medicine, and Biomedical Neuroscience Institute, Facultad de Medicina, Universidad de Chile, Santiago, Chile
| | - Gonzalo Farías
- Department of Neurology North, Faculty of Medicine, University of Chile, Santiago, Chile
- Center for advanced clinical research (CICA), Hospital Clínico Universidad de Chile, Chile
| | - Teresa Torralva
- Institute of Cognitive and Translational Neuroscience (INCYT), Instituto de Neurología Cognitiva Foundation, Favaloro University, Buenos Aires, Argentina
| | - Agustín Ibáñez
- Latin American Brain Health Institute (BrainLat), Universidad Adolfo Ibáñez, Santiago, Chile
- Cognitive Neuroscience Center (CNC), Universidad de San Andrés, National Scientific and Technical Research Council (CONICET), Buenos Aires, Argentina
- Global Brain Health Institute, University of California, San Francisco, San Francisco, CA, USA
- Trinity College Dublin (TCD), Dublin, Ireland
| | - Mario A Parra
- School of Psychological Sciences and Health, University of Strathclyde, Glasgow, UK
| | - Sam Gilbert
- Institute of Cognitive Neuroscience, University College London, London, UK
| | - Andrea Slachevsky
- Geroscience Center for Brain Health and Metabolism (GERO), Santiago, Chile
- Memory and Neuropsychiatric Center (CMYN), Memory Unit - Neurology Department, Hospital del Salvador and Faculty of Medicine, University of Chile, Santiago, Chile
- Neuropsychology and Clinical Neuroscience Laboratory (LANNEC), Physiopathology Department - Biomedical Science Institute, Neuroscience and East Neuroscience Departments, Faculty of Medicine, University of Chile, Santiago, Chile
- Department of Neurology and Psychiatry, Clínica Alemana-Universidad del Desarrollo, Santiago, Chile
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10
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Parra MA, Orellana P, Leon T, Victoria CG, Henriquez F, Gomez R, Avalos C, Damian A, Slachevsky A, Ibañez A, Zetterberg H, Tijms BM, Yokoyama JS, Piña-Escudero SD, Cochran JN, Matallana DL, Acosta D, Allegri R, Arias-Suárez BP, Barra B, Behrens MI, Brucki SMD, Busatto G, Caramelli P, Castro-Suarez S, Contreras V, Custodio N, Dansilio S, De la Cruz-Puebla M, de Souza LC, Diaz MM, Duque L, Farías GA, Ferreira ST, Guimet NM, Kmaid A, Lira D, Lopera F, Meza BM, Miotto EC, Nitrini R, Nuñez A, O'neill S, Ochoa J, Pintado-Caipa M, de Paula França Resende E, Risacher S, Rojas LA, Sabaj V, Schilling L, Sellek AF, Sosa A, Takada LT, Teixeira AL, Unaucho-Pilalumbo M, Duran-Aniotz C. Biomarkers for dementia in Latin American countries: Gaps and opportunities. Alzheimers Dement 2023; 19:721-735. [PMID: 36098676 PMCID: PMC10906502 DOI: 10.1002/alz.12757] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2022] [Revised: 05/29/2022] [Accepted: 06/14/2022] [Indexed: 12/13/2022]
Abstract
Limited knowledge on dementia biomarkers in Latin American and Caribbean (LAC) countries remains a serious barrier. Here, we reported a survey to explore the ongoing work, needs, interests, potential barriers, and opportunities for future studies related to biomarkers. The results show that neuroimaging is the most used biomarker (73%), followed by genetic studies (40%), peripheral fluids biomarkers (31%), and cerebrospinal fluid biomarkers (29%). Regarding barriers in LAC, lack of funding appears to undermine the implementation of biomarkers in clinical or research settings, followed by insufficient infrastructure and training. The survey revealed that despite the above barriers, the region holds a great potential to advance dementia biomarkers research. Considering the unique contributions that LAC could make to this growing field, we highlight the urgent need to expand biomarker research. These insights allowed us to propose an action plan that addresses the recommendations for a biomarker framework recently proposed by regional experts.
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Affiliation(s)
- Mario A. Parra
- School of Psychological Sciences and Health, University of Strathclyde. Glasgow, United Kingdom
| | - Paulina Orellana
- Latin American Institute for Brain Health (BrainLat), Universidad Adolfo Ibanez. Santiago, Chile
- Center for Social and Cognitive Neuroscience (CSCN), School of Psychology, Universidad Adolfo Ibanez. Santiago, Chile
| | - Tomas Leon
- Global Brain Health Institute, Trinity College. Dublin, Ireland
- Memory and Neuropsychiatric Clinic (CMYN) Neurology Department, Hospital del Salvador y Facultad de Medicina, Universidad de Chile. Santiago, Chile
| | - Cabello G. Victoria
- Latin American Institute for Brain Health (BrainLat), Universidad Adolfo Ibanez. Santiago, Chile
- Neuropsychology and Clinical Neuroscience Laboratory (LANNEC), Physiopathology Department - Institute of Biomedical Sciences (ICBM), Neuroscience and East Neuroscience Departments, Faculty of Medicine, Universidad de Chile. Santiago, Chile
- Unit of Brain Health, Department of Neurology and Neurosurgery, Faculty of Medicine, Universidad de Chile. Santiago, Chile
| | - Fernando Henriquez
- Neuropsychology and Clinical Neuroscience Laboratory (LANNEC), Physiopathology Department - Institute of Biomedical Sciences (ICBM), Neuroscience and East Neuroscience Departments, Faculty of Medicine, Universidad de Chile. Santiago, Chile
- Geroscience Center for Brain Health and Metabolism (GERO). Santiago, Chile
- Laboratory for Cognitive and Evolutionary Neuroscience (LaNCE), Department of Psychiatry, Faculty of Medicine, Pontificia Universidad Católica de Chile. Santiago, Chile
| | - Rodrigo Gomez
- Memory and Neuropsychiatric Clinic (CMYN) Neurology Department, Hospital del Salvador y Facultad de Medicina, Universidad de Chile. Santiago, Chile
- Graduate School, Faculty of Medicine, Universidad Mayor, Chile - Centro de Apoyo Comunitario a personas con Demencia Kintun. Santiago, Chile
| | - Constanza Avalos
- Latin American Institute for Brain Health (BrainLat), Universidad Adolfo Ibanez. Santiago, Chile
- Center for Social and Cognitive Neuroscience (CSCN), School of Psychology, Universidad Adolfo Ibanez. Santiago, Chile
| | - Andres Damian
- Centro Uruguayo de Imagenología Molecular (CUDIM) - Centro de Medicina Nuclear e Imagenología Molecular, Hospital de Clínicas, Universidad de la República. Montevideo, Uruguay
| | - Andrea Slachevsky
- Memory and Neuropsychiatric Clinic (CMYN) Neurology Department, Hospital del Salvador y Facultad de Medicina, Universidad de Chile. Santiago, Chile
- Neuropsychology and Clinical Neuroscience Laboratory (LANNEC), Physiopathology Department - Institute of Biomedical Sciences (ICBM), Neuroscience and East Neuroscience Departments, Faculty of Medicine, Universidad de Chile. Santiago, Chile
- Geroscience Center for Brain Health and Metabolism (GERO). Santiago, Chile
- Department of Neurology and Psyquiatry, Clínica Alemana-Universidad del Desarrollo. Santiago, Chile
| | - Agustin Ibañez
- Latin American Institute for Brain Health (BrainLat), Universidad Adolfo Ibanez. Santiago, Chile
- Center for Social and Cognitive Neuroscience (CSCN), School of Psychology, Universidad Adolfo Ibanez. Santiago, Chile
- Global Brain Health Institute, Trinity College. Dublin, Ireland
- Global Brain Health Institute and the Memory and Aging Center, Weill Institute for Neurosciences, Departments of Neurology and Radiology & Biomedical Imaging, University of California, San Francisco (UCSF). San Francisco, USA
- Cognitive Neuroscience Center (CNC), Universidad de San Andrés, & National Scientific and Technical Research Council (CONICET). Buenos Aires, Argentina
| | - Henrik Zetterberg
- Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, the Sahlgrenska Academy at the University of Gothenburg. Mölndal, Sweden
- Clinical Neurochemistry Laboratory, Sahlgrenska University Hospital. Mölndal, Sweden
- Department of Neurodegenerative Disease, UCL Institute of Neurology. Queen Square, London, UK
- UK Dementia Research Institute at UCL. London, UK
- Hong Kong Center for Neurodegenerative Diseases. Clear Water Bay, Hong Kong, China
| | - Betty M. Tijms
- Alzheimer Center Amsterdam, Department of Neurology, Amsterdam Neuroscience. Amsterdam UMC, The Netherlands
| | - Jennifer S. Yokoyama
- Global Brain Health Institute and the Memory and Aging Center, Weill Institute for Neurosciences, Departments of Neurology and Radiology & Biomedical Imaging, University of California, San Francisco (UCSF). San Francisco, USA
- Department of Neurology, Memory and Aging Center, UCSF. San Francisco, USA
| | - Stefanie D. Piña-Escudero
- Atlantic Fellow for Equity in Brain Health at the Global Brain Health Institute (GBHI), University of California San Francisco. San Francisco, USA
| | | | - Diana L Matallana
- Medical School, Aging Institute and Psychiatry Department, Neuroscience PhD Program, Pontificia Universidad Javeriana. Bogotá,Colombia
- Memory and Cognition Center, Intellectus, Hospital Universitario San Ignacio. Bogotá, Colombia
- Psychiatry Department, Hospital Universitario Santa Fe de Bogotá. Bogotá, Colombia
| | - Daisy Acosta
- Universidad Nacional Pedro Henriquez Urena (UNPHU). Santo Domingo, República Dominicana
| | - Ricardo Allegri
- Department of Cognitive Neurology, Neuropsychiatry and Neuropsychology, Instituto Neurológico Fleni. Buenos Aires, Argentina
- Department of Neurosciences, Universidad de la Costa. Barranquilla, Colombia
| | - Bianca P. Arias-Suárez
- Faculty of Human Medicine, Postgraduate Section, National University of San Marcos. Lima, Perú
| | - Bernardo Barra
- Mental Health Service, Clínica Universidad de los Andes. Santiago, Chile
- Department of Psychiatry, Medicine School, Andrés Bello University of Santiago (UNAB). Santiago, Chile
| | - Maria Isabel Behrens
- Department of Neurology and Psyquiatry, Clínica Alemana-Universidad del Desarrollo. Santiago, Chile
- Center for Advanced Clinical Research (CICA). Department of Neurology & Neurosurgery and Neuroscience Department, Faculty of Medicine, Universidad de Chile. Santiago, Chile
- Department of Neurology and Neurosurgery, Hospital Clínico Universidad de Chile. Santiago, Chile
- Department of Neurocience, Faculty of Medicine, Universidad de Chile. Santiago, Chile
| | - Sonia M. D. Brucki
- Cognitive and Behavioral Neurology Unit, Department of Neurology, University of São Paulo Medical School, University of São Paulo. São Paulo, Brazil
| | - Geraldo Busatto
- Departamento e Instituto de Psiquiatria, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo HCFMUSP. São Paulo, Brazil
| | - Paulo Caramelli
- Behavioral and Cognitive Neurology Unit, Faculdade de Medicina, Universidade Federal de Minas Gerais. Belo Horizonte, Brazil
| | - Sheila Castro-Suarez
- Atlantic Fellow for Equity in Brain Health at the Global Brain Health Institute (GBHI), University of California San Francisco. San Francisco, USA
- Instituto Nacional de Ciencias Neurológicas. Lima, Perú
| | | | - Nilton Custodio
- Unit of diagnosis of cognitive impairment and dementia prevention, Instituto Peruano de Neurociencias.Lima, Perú
| | - Sergio Dansilio
- Department of Neuropsychology, Institut of Neurology, Hospital de Clínicas, Faculty of Medicine,Universidad de la República. Montevideo, Uruguay
| | - Myriam De la Cruz-Puebla
- Global Brain Health Institute and the Memory and Aging Center, Weill Institute for Neurosciences, Departments of Neurology and Radiology & Biomedical Imaging, University of California, San Francisco (UCSF). San Francisco, USA
- Cognition and Brain Plasticity Unit, Bellvitge Biomedical Research Institute. Barcelona, Spain
- Department of Cellular Biology, Physiology and Immunology, Neuroscience Institute, Autonomous University of Barcelona. Barcelona, Spain
- Department of Internal Medicine, Health Sciences Faculty, Technical University of Ambato. Tungurahua, Ecuador
| | - Leonardo Cruz de Souza
- Departamento e Instituto de Psiquiatria, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo HCFMUSP. São Paulo, Brazil
- Neurology Service, School of Medicine, Pontifical University of Rio Grande do Sul (PUCRS). Porto Alegre, Brazil
| | - Monica M. Diaz
- Department of Neurology, University of North Carolina at Chapel Hill. North Carolina, USA
- School of Public Health, Universidad Peruana Cayetano Heredia. Lima, Peru
| | - Lissette Duque
- Unit of Cognitive diseases, Neuromedicenter. Quito, Ecuador
| | - Gonzalo A. Farías
- Center for Advanced Clinical Research (CICA). Department of Neurology & Neurosurgery and Neuroscience Department, Faculty of Medicine, Universidad de Chile. Santiago, Chile
| | - Sergio T. Ferreira
- Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de Janeiro. Rio de Janeiro, Brazil
| | - Nahuel Magrath Guimet
- Atlantic Fellow for Equity in Brain Health at the Global Brain Health Institute (GBHI), University of California San Francisco. San Francisco, USA
- Department of Cognitive Neurology, Neuropsychiatry and Neuropsychology, Instituto Neurológico Fleni. Buenos Aires, Argentina
| | - Ana Kmaid
- Unit of Cognitive evaluation. Department of Geriatry ang Gerentology. Hospital de Clínicas. Faculty of Medicine. Universidad de la República. Montevideo, Uruguay
| | - David Lira
- Unit of diagnosis of cognitive impairment and dementia prevention, Instituto Peruano de Neurociencias.Lima, Perú
| | - Francisco Lopera
- Grupo de Neurociencias de Antioquia, Universidad de Antioquia, School of Medicine. Medellín, Colombia
| | - Beatriz Mar Meza
- Atlantic Fellow for Equity in Brain Health at the Global Brain Health Institute (GBHI), University of California San Francisco. San Francisco, USA
- Department of Geriatry ang Gerentology, Hospital Central de la Fuerza Aérea del Perú. Lima, Perú
| | - Eliane C Miotto
- Cognitive and Behavioral Neurology Unit, Department of Neurology, University of São Paulo Medical School, University of São Paulo. São Paulo, Brazil
| | - Ricardo Nitrini
- Cognitive and Behavioral Neurology Unit, Department of Neurology, University of São Paulo Medical School, University of São Paulo. São Paulo, Brazil
| | - Alberto Nuñez
- Unit of Cognitive diseases, Neuromedicenter. Quito, Ecuador
| | - Santiago O'neill
- Neurosciences Institute, Favaloro Foundation University Hospital. Buenos Aires, Argentina
| | - John Ochoa
- Group of Neuropsychology and behavior, Universidad de Antioquia, School of Medicine. Medellín, Colombia
| | - Maritza Pintado-Caipa
- Atlantic Fellow for Equity in Brain Health at the Global Brain Health Institute (GBHI), University of California San Francisco. San Francisco, USA
- Unit of diagnosis of cognitive impairment and dementia prevention, Instituto Peruano de Neurociencias.Lima, Perú
| | - Elisa de Paula França Resende
- Global Brain Health Institute and the Memory and Aging Center, Weill Institute for Neurosciences, Departments of Neurology and Radiology & Biomedical Imaging, University of California, San Francisco (UCSF). San Francisco, USA
- Behavioral and Cognitive Neurology Unit, Faculdade de Medicina, Universidade Federal de Minas Gerais. Belo Horizonte, Brazil
- Neurology Service, School of Medicine, Pontifical University of Rio Grande do Sul (PUCRS). Porto Alegre, Brazil
- Brain Institute of Rio Grande do Sul, Pontifical University of Rio Grande do Sul (PUCRS). Porto Alegre, Brazil
- Faculdade de Ciências Médicas de Minas Gerais. Belo Horizonte, Brazil
| | - Shannon Risacher
- Center for Neuroimaging, Department of Radiology and Imaging Sciences, Indiana Alzheimer’s Disease Research Center, Department of Neurology, Indiana University School of Medicine. Indianapolis, USA
| | - Luz Angela Rojas
- Research Group, MI Dneuropsy, Universidad Surcolombiana. Neiva, Colombia
| | - Valentina Sabaj
- Unit of Neuropsychogeriatry, Instituto Nacional de Geriatría. Santiago, Chile
| | - Lucas Schilling
- Neurology Service, School of Medicine, Pontifical University of Rio Grande do Sul (PUCRS). Porto Alegre, Brazil
- Brain Institute of Rio Grande do Sul, Pontifical University of Rio Grande do Sul (PUCRS). Porto Alegre, Brazil
- Graduate Program in Biomedical Gerontology, Pontifical University of Rio Grande do Sul (PUCRS). Porto Alegre, Brazil
| | | | - Ana Sosa
- Instituto Nacional de Neurología y Neurocirugía (INNN), Manuel Velasco Suarez. Ciudad de México, México
| | - Leonel T. Takada
- Cognitive and Behavioral Neurology Unit, Department of Neurology, University of São Paulo Medical School, University of São Paulo. São Paulo, Brazil
| | - Antonio L. Teixeira
- Faculdade Santa Casa BH. Belo Horizonte, Brazil
- Neuropsychiatry Program, University of Texas Health Science Center at Houston. Houston, USA
| | - Martha Unaucho-Pilalumbo
- Atlantic Fellow for Equity in Brain Health at the Global Brain Health Institute (GBHI), University of California San Francisco. San Francisco, USA
- Departamento de Neurología, Hospital Universidad Técnica Particular de Loja. Loja, Ecuador
| | - Claudia Duran-Aniotz
- Latin American Institute for Brain Health (BrainLat), Universidad Adolfo Ibanez. Santiago, Chile
- Center for Social and Cognitive Neuroscience (CSCN), School of Psychology, Universidad Adolfo Ibanez. Santiago, Chile
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Parra MA, Granada J, Fernández G. Memory-driven eye movements prospectively predict dementia in people at risk of Alzheimer's disease. Alzheimers Dement (Amst) 2022; 14:e12386. [PMID: 36579131 PMCID: PMC9780510 DOI: 10.1002/dad2.12386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 09/29/2022] [Accepted: 10/21/2022] [Indexed: 12/24/2022]
Abstract
Introduction Oculomotor behaviors linked to cognitive performance revealed neurocognitive features of Alzheimer's disease (AD) that can enhance the accuracy of its assessment and diagnosis. Methods A sample of 107 participants (i.e., 65 mild cognitive impairment [MCI] and 42 controls) were recruited and followed up for 40 months. At baseline, they underwent assessment with the ViewMind digital biomarker, which draws cognitive-related patterns of eye movement while people perform the visual short-term memory binding task. Results Baseline data predicted that 36 patients with MCI would progress to the AD clinical syndrome (ADS Progressing). The remaining 29 MCI patients were predicted to remain as MCI or progress to other forms of dementia. After 40 months of follow-up, 94% of ADS Progressing patients had received a diagnosis of dementia, whereas none of the non-ADS Progressing had. Discussion The analysis of eye movement behavior combined with cognitive markers for AD can effectively predict progression to ADS among patients with MCI.
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Affiliation(s)
- Mario A Parra
- School of Psychological Sciences and HealthUniversity of StrathclydeGlasgowUK,ViewMind IncDelawareUSA
| | | | - Gerardo Fernández
- ViewMind IncDelawareUSA,Laboratorio de Desarrollo en Neurociencias Cognitivas, Instituto de Investigaciones en Ingeniería Eléctrica (IIIE) (UNS‐CONICET)Bahía BlancaBuenos AiresArgentina,Axis NeurocienciasBahía BlancaArgentina
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12
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Parra MA, Calia C, Pattan V, Della Sala S. Memory markers in the continuum of the Alzheimer's clinical syndrome. Alzheimers Res Ther 2022; 14:142. [PMID: 36180965 PMCID: PMC9526252 DOI: 10.1186/s13195-022-01082-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Accepted: 09/14/2022] [Indexed: 11/16/2022]
Abstract
BACKGROUND The individual and complementary value of the Visual Short-Term Memory Binding Test (VSTMBT) and the Free and Cued Selective Reminding Test (FCSRT) as markers to trace the AD continuum was investigated. It was hypothesised that the VSTMBT would be an early indicator while the FCSRT would inform on imminent progression. METHODS Healthy older adults (n=70) and patients with mild cognitive impairment (MCI) (n=80) were recruited and followed up between 2012 and 2017. Participants with at least two assessment points entered the study. Using baseline and follow-up assessments four groups were defined: Older adults who were healthy (HOA), with very mild cognitive but not functional impairment (eMCI), and with MCI who did and did not convert to dementia (MCI converters and non-converters). RESULTS Only the VSTMBT predicted group membership in the very early stages (HOA vs eMCI). As the disease progressed, the FCSRT became a strong predictor excluding the VSTMB from the models. Their complementary value was high during the mid-prodromal stages and decreased in stages closer to dementia. DISCUSSION The study supports the notion that neuropsychological assessment for AD needs to abandon the notion of one-size-fits-all. A memory toolkit for AD needs to consider tools that are early indicators and tools that suggest imminent progression. The VSTMBT and the FSCRT are such tools.
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Affiliation(s)
- Mario A Parra
- School of Psychological Sciences and Health, University of Strathclyde, Graham Hills Building, 40 George Street, Glasgow, G1 1QE, UK.
| | - Clara Calia
- School of Health in Social Science, University of Edinburgh, Edinburgh, UK
| | - Vivek Pattan
- NHS Forth Valley, Stirling Community Hospital, Stirling, UK
| | - Sergio Della Sala
- Human Cognitive Neuroscience, Psychology Department, University of Edinburgh, Edinburgh, UK
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Moguilner S, Birba A, Fittipaldi S, Gonzalez-Campo C, Tagliazucchi E, Reyes P, Matallana D, Parra MA, Slachevsky A, Farias G, Cruzat J, Garcia A, Eyre HA, La Joie R, Rabinovici G, Whelan R, Ibanez A. Multi-feature computational framework for combined signatures of dementia in underrepresented settings. J Neural Eng 2022; 19. [PMID: 35940105 DOI: 10.1088/1741-2552/ac87d0] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Accepted: 08/08/2022] [Indexed: 11/11/2022]
Abstract
OBJECTIVE The differential diagnosis of behavioral variant frontotemporal dementia (bvFTD) and Alzheimer's disease (AD) remains challenging in underrepresented, underdiagnosed groups, including Latinos, as advanced biomarkers are rarely available. Recent guidelines for the study of dementia highlight the critical role of biomarkers. Thus, novel cost-effective complementary approaches are required in clinical settings. APPROACH We developed a novel framework based on a gradient boosting machine learning classifier, tuned by Bayesian optimization, on a multi-feature multimodal approach (combining demographic, neuropsychological, MRI, and EEG/fMRI connectivity data) to characterize neurodegeneration using site harmonization and sequential feature selection. We assessed 54 bvFTD and 76 AD patients and 152 healthy controls (HCs) from a Latin American consortium (ReDLat). MAIN RESULTS The multimodal model yielded high AUC classification values (bvFTD patients vs. HCs: 0.93 (±0.01); AD patients vs. HCs: 0.95 (±0.01); bvFTD vs. AD patients: 0.92 (±0.01)). The feature selection approach successfully filtered non-informative multimodal markers (from thousands to dozens). Results proved robust against multimodal heterogeneity, sociodemographic variability, and missing data. SIGNIFICANCE The model accurately identified dementia subtypes using measures readily available in underrepresented settings, with a similar performance than advanced biomarkers. This approach, if confirmed and replicated, may potentially complement clinical assessments in developing countries.
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Affiliation(s)
| | - Agustina Birba
- University of San Andres, Vito Dumas 284, Buenos Aires, B1644BID, ARGENTINA
| | - Sol Fittipaldi
- University of San Andres, Vito Dumas 284, Buenos Aires, B1644BID, ARGENTINA
| | | | - Enzo Tagliazucchi
- Fachhochschule Kiel, Sokratespl. 1, 24149 Kiel, Kiel, 24149, GERMANY
| | - Pablo Reyes
- Pontificia Universidad Javeriana, Calle 18 No. 118-250, Cali, Bogota, 118, COLOMBIA
| | - Diana Matallana
- Pontificia Universidad Javeriana, Calle 18 No. 118-250, Bogota, 118, COLOMBIA
| | - Mario A Parra
- University of Strathclyde, School of Psychological Sciences and Health, Glasgow, Glasgow, G1 1XQ, UNITED KINGDOM OF GREAT BRITAIN AND NORTHERN IRELAND
| | - Andrea Slachevsky
- University of Chile, Av Libertador Bernardo O'Higgins 1058, Santiago de Chile, 1025000, CHILE
| | - Gonzalo Farias
- University of Chile, Av Libertador Bernardo O'Higgins 1058, Santiago de Chile, 1025000, CHILE
| | - Josephine Cruzat
- Adolfo Ibanez University, Diag. Las Torres 2640, Penalolen, 2580335, CHILE
| | - Adolfo Garcia
- University of San Andres, Vito Dumas 284, Buenos Aires, B1644BID, ARGENTINA
| | - Harris A Eyre
- Trinity College Dublin, College Green, Dublin, 2, IRELAND
| | - Renaud La Joie
- UCSF, 505 Parnassus Ave, San Francisco, California, 94143, UNITED STATES
| | - Gil Rabinovici
- UCSF, 505 Parnassus Ave, San Francisco, California, 94143, UNITED STATES
| | - Robert Whelan
- Trinity College Dublin School of Psychology, College Green, Dublin, 2, IRELAND
| | - Agustin Ibanez
- Trinity College Dublin, College Green, Dublin, 2, IRELAND
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Clark RA, Smith K, Escudero J, Ibáñez A, Parra MA. Robust Assessment of EEG Connectivity Patterns in Mild Cognitive Impairment and Alzheimer's Disease. Front Neuroimaging 2022; 1:924811. [PMID: 37555186 PMCID: PMC10406240 DOI: 10.3389/fnimg.2022.924811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Accepted: 06/21/2022] [Indexed: 08/10/2023]
Abstract
The prevalence of dementia, including Alzheimer's disease (AD), is on the rise globally with screening and intervention of particular importance and benefit to those with limited access to healthcare. Electroencephalogram (EEG) is an inexpensive, scalable, and portable brain imaging technology that could deliver AD screening to those without local tertiary healthcare infrastructure. We study EEG recordings of subjects with sporadic mild cognitive impairment (MCI) and prodromal familial, early-onset, AD for the same working memory tasks using high- and low-density EEG, respectively. A challenge in detecting electrophysiological changes from EEG recordings is that noise and volume conduction effects are common and disruptive. It is known that the imaginary part of coherency (iCOH) can generate functional connectivity networks that mitigate against volume conduction, while also erasing true instantaneous activity (zero or π-phase). We aim to expose topological differences in these iCOH connectivity networks using a global network measure, eigenvector alignment (EA), shown to be robust to network alterations that emulate the erasure of connectivities by iCOH. Alignments assessed by EA capture the relationship between a pair of EEG channels from the similarity of their connectivity patterns. Significant alignments-from comparison with random null models-are seen to be consistent across frequency ranges (delta, theta, alpha, and beta) for the working memory tasks, where consistency of iCOH connectivities is also noted. For high-density EEG recordings, stark differences in the control and sporadic MCI results are observed with the control group demonstrating far more consistent alignments. Differences between the control and pre-dementia groupings are detected for significant correlation and iCOH connectivities, but only EA suggests a notable difference in network topology when comparing between subjects with sporadic MCI and prodromal familial AD. The consistency of alignments, across frequency ranges, provides a measure of confidence in EA's detection of topological structure, an important aspect that marks this approach as a promising direction for developing a reliable test for early onset AD.
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Affiliation(s)
- Ruaridh A. Clark
- Centre for Signal and Image Processing, University of Strathclyde, Glasgow, United Kingdom
| | - Keith Smith
- Department of Physics and Mathematics, Nottingham Trent University, Nottingham, United Kingdom
| | - Javier Escudero
- School of Engineering, Institute for Digital Communications, University of Edinburgh, Edinburgh, United Kingdom
| | - Agustín Ibáñez
- Latin American Brain Health Institute, Universidad Adolfo Ibáñez, Santiago, Chile
- Cognitive Neuroscience Center, Universidad de San Andrés & Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
- Global Brain Health Institute (GBHI), University of California, San Francisco, CA, United States
- Global Brain Health Institute (GBHI), Trinity College, Dublin, Ireland
- Trinity College Institute of Neuroscience, Trinity College Dublin, Dublin, Ireland
| | - Mario A. Parra
- School of Psychological Sciences and Health, University of Strathclyde, Glasgow, United Kingdom
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Drage R, Escudero J, Parra MA, Scally B, Anghinah R, De Araujo AVL, Basile LF, Abasolo D. A novel deep learning approach using AlexNet for the classification of electroencephalograms in Alzheimer's Disease and Mild Cognitive Impairment. Annu Int Conf IEEE Eng Med Biol Soc 2022; 2022:3175-3178. [PMID: 36085668 DOI: 10.1109/embc48229.2022.9871497] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Alzheimer's Disease (AD) is the most common form of dementia. Mild Cognitive Impairment (MCI) is the term given to the stage describing prodromal AD and represents a 'risk factor' in early-stage AD diagnosis from normal cognitive decline due to ageing. The electroencephalogram (EEG) has been studied extensively for AD characterization, but reliable early-stage diagnosis continues to present a challenge. The aim of this study was to introduce a novel way of classifying between AD patients, MCI subjects, and age-matched healthy control (HC) subjects using EEG-derived feature images and deep learning techniques. The EEG recordings of 141 age-matched subjects (52 AD, 37 MCI, 52 HC) were converted into 2D greyscale images representing the Pearson correlation coefficients and the distance Lempel-Ziv Complexity (dLZC) between the 21 EEG channels. Each feature type was computed from EEG epochs of 1s, 2s, 5s and 10s segmented from the original recording. The CNN architecture AlexNet was modified and employed for this three-way classification task and a 70/30 split was used for training and validation with each of the different epoch lengths and EEG-derived images. Whilst a maximum classification accuracy of 73.49% was obtained using dLZC-derived images from 10s epochs as input to the model, the classification accuracy reached 98.13% using the images obtained from Pearson correlation coefficients and 5s epochs. Clinical Relevance- The preliminary findings from this study show that deep learning applied to the analysis of the EEG can classify subjects with accuracies close to 100.
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16
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Smith KM, Starr JM, Escudero J, Ibañez A, Parra MA. Abnormal Functional Hierarchies of EEG Networks in Familial and Sporadic Prodromal Alzheimer's Disease During Visual Short-Term Memory Binding. Front Neuroimaging 2022; 1:883968. [PMID: 37555153 PMCID: PMC10406202 DOI: 10.3389/fnimg.2022.883968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 05/16/2022] [Indexed: 08/10/2023]
Abstract
Alzheimer's Disease (AD) shows both complex alterations of functional dependencies between brain regions and a decreased ability to perform Visual Short-Term Memory Binding (VSTMB) tasks. Recent advances in network neuroscience toward understanding the complexity of hierarchical brain function here enables us to establish a link between these two phenomena. Here, we study data on two types of dementia at Mild Cognitive Impairment (MCI) stage-familial AD patients (E280A mutation of the presenilin-1 gene) and elderly MCI patients at high risk of sporadic AD, both with age-matched controls. We analyzed Electroencephalogram (EEG) signals recorded during the performance of Visual Short-Term Memory (VSTM) tasks by these participants. Functional connectivity was computed using the phase-lag index in Alpha and Beta; and network analysis was employed using network indices of hierarchical spread (degree variance) and complexity. Hierarchical characteristics of EEG functional connectivity networks revealed abnormal patterns in familial MCI VSTMB function and sporadic MCI VSTMB function. The middle-aged familial MCI binding network displayed a larger degree variance in lower Beta compared to healthy controls (p = 0.0051, Cohen's d = 1.0124), while the elderly sporadic MCI binding network displayed greater hierarchical complexity in Alpha (p = 0.0140, Cohen's d = 1.1627). Characteristics in healthy aging were not shown to differ. These results indicate that activity in MCI exhibits cross-frequency network reorganization characterized by increased heterogeneity of node roles in the functional hierarchy. Aging itself is not found to cause VSTM functional hierarchy differences.
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Affiliation(s)
- Keith M. Smith
- Department of Physics and Mathematics, School of Science and Technology, Nottingham Trent University, Nottingham, United Kingdom
| | - John M. Starr
- Alzheimer Scotland Dementia Research Centre, School of Philosophy, Psychology and Language Sciences, University of Edinburgh, Edinburgh, United Kingdom
| | - Javier Escudero
- School of Engineering, Institute for Digital Communications, University of Edinburgh, Edinburgh, United Kingdom
| | - Agustin Ibañez
- Latin American Brain Health Institute (BrainLat), Universidad Adolfo Ibañez, Santiago, Chile
- National Scientific and Technical Research Council (CONICET), Buenos Aires, Argentina
- Center for Social and Cognitive Neuroscience, School of Psychology, Universidad Adolfo Ibáñez, Santiago, Chile
- Global Brain Health Institute, UCSF, San Francisco, CA, United States
- Trinity College Institute of Neuroscience, Trintity College Dublin, Dublin, Ireland
| | - Mario A. Parra
- Trinity College Institute of Neuroscience, Trintity College Dublin, Dublin, Ireland
- School of Psychological Sciences and Health, University of Strathclyde, Glasgow, United Kingdom
- Neuroprogressive and Dementia Network, NHS Scotland, Glasgow, United Kingdom
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17
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Abstract
Recently, Alzheimer's Disease International (ADI) stressed that around 75% of people living with dementia globally are still not receiving a diagnosis. In this commentary, I reflect on how efforts towards better cognitive assessments, particularly of memory, can be aligned and harmonized to contribute to such needs. I highlight some barriers that ongoing collaborations and trials are facing and their potential drivers. I suggest some strategies that can help overcome them and in so doing, integrate research agendas. We need to ignite the debate towards strategies that can help level the playfield to tackle Alzheimer's disease with true global solutions.
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Affiliation(s)
- Mario A Parra
- School of Psychological Sciences and Health, University of Strathclyde, Glasgow, Scotland, UK
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18
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Parra MA, Garcia AM, Ibanez A. Addressing dementia challenges through international networks: Evidence from the Latin American and Caribbean Consortium on Dementia (LAC-CD). Alzheimers Dement 2022; 17 Suppl 8:e055106. [PMID: 34971293 DOI: 10.1002/alz.055106] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
BACKGROUND LAC-CD has recently reported that challenges faced by LAC countries are very similar to those experienced by HIC, and that regional networks will be needed to bridge gaps. ReDLat is a US-LAC multi-partner consortium aimed at expanding dementia research in LAC. The UK-Latin America Brain Connectivity Research Network (UL-BCRN) focuses on developing new affordable EEG-based biomarkers for dementia. The Language and Brain Health Network (LBHN) integrate international multidisciplinary efforts to reveal linguistic markers of neurodegenerative diseases. METHODS ReDLat is collecting genomic, neuroimaging, clinical, cognitive, and socioeconomic data from a first-in-class cohort anchored in six LAC (Argentina, Chile, Colombia, Brazil, Mexico, and Peru) and will compare these to US data (> 4200 participants, including 2100 controls, 1050 AD patients, and 1050 FTD patients). The 5-year project will develop innovative, harmonized, and cross-nation approaches on two of the most prevalent neurodegenerative diseases, Alzheimer's disease (AD) and Frontotemporal Dementia (FTD). The UL-BCRN currently links seven EEG labs from Colombia, Argentina, Chile, Brazil and the UK. The network's vision is to forge strong relationships between labs through which new methodologies, EEG plus multidimensional datasets, and experience will be developed and shared. The LBHN will analyze speech samples from massive AD, FTD, and control cohorts across LAC, Spain, and the US. This effort aims to identify low-cost disease-specific markers in diverse Latino and English-speaking patients. RESULTS ReDLat will aims to reveal unique risk factors for AD and FTD in LAC compared to US populations. Data collection strategies have been adapted to face the challenges brought by the COVID-19 pandemic. The UL-BCRN has now standardised recording protocols across LAC and UK labs and is collecting data from longitudinal cohorts of patients at risk of dementia relying on novel culture-free cognitive paradigms. Preliminary LBHN data shows that, automated speech analyses can identify Latinos with AD and FTD, with good generalization across socio-biological profiles, dialects, and languages. CONCLUSION By broadening our understanding of dementia phenotypes, risk factors, and affordable diagnostic approaches in LAC, adding new evidence on variability across HIC and LMIC, the above networks will contribute unique knowledge that will help enhance future global dementia strategies.
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Affiliation(s)
| | - Adolfo M Garcia
- Instituto de Neurociencia Cognitiva y Traslacional (INCyT), Buenos Aires, Argentina.,Global Brain Health Institute, University of California, San Francisco, CA, USA.,Universidad de San Andrés, Buenos Aires, Argentina
| | - Agustin Ibanez
- Instituto de Neurociencia Cognitiva y Traslacional (INCyT), Buenos Aires, Argentina.,Global Brain Health Institute, University of California, San Francisco, CA, USA.,Universidad de San Andrés, Buenos Aires, Argentina.,Universidad Adolfo Ibanez, Santiago de Chile, Chile.,Universidad Autónoma de Caribe, Barranquilla, Colombia
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- Lantin American and Caribbean Consortium on Dementia, LAC, Argentina
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19
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Fernández G, Schumacher M, Orozco D, Sgrilli G, Echeverria G, Linares R, Parra MA. A novel digital cognitive biomarker for mild cognitive impairment and Alzheimer’s disease. Alzheimers Dement 2021. [DOI: 10.1002/alz.055018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Gerardo Fernández
- Instituto de Investigaciones en Ingeniería Eléctrica "Alfredo Desages", Bahía Blanca Argentina
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20
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Forno G, Parra MA, Lillo P, Villagra R, Parrao T, Thumala D, Slachevsky A. Memory markers can help trace the Alzheimer’s disease continuum: Evidence from the GERO Cohort. Alzheimers Dement 2021. [DOI: 10.1002/alz.054261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Gonzalo Forno
- School of Psychology, Universidad de los Andes Santiago Chile
- Geroscience Center for Brain Health and Metabolism (GERO), Faculty of Medicine, University of Chile Santiago Chile
- Neuropsychology and Clinical Neuroscience Laboratory (LANNEC), Physiopathology Department ‐ ICBM, Neuroscience and East Neuroscience Departments, Faculty of Medicine, University of Chile Santiago Chile
| | | | - Patricia Lillo
- Geroscience Center for Brain Health and Metabolism (GERO), Chile Santiago Chile
- East Neuroscience Departments, Faculty of Medicine, University of Chile Santiago Chile
| | - Roque Villagra
- Geroscience Center for Brain Health and Metabolism (GERO), Chile Santiago Chile
| | - Teresa Parrao
- Universidad Alberto Hurtado Santiago Chile
- Laboratory of Neuropsychology and Clinical Neuroscience (LANNEC), Physiopathology Program‐ICBM, East Neurologic and Neurosciences Departments, Faculty of Medicine, University of Chile Santiago Chile
- Geroscience Center for Brain Health and Metabolism (GERO) Santiago Chile
| | - Daniela Thumala
- Geroscience Center for Brain Health and Metabolism (GERO), Chile Santiago Chile
| | - Andrea Slachevsky
- Geroscience Center for Brain Health and Metabolism (GERO), Chile Santiago Chile
- Servicio de Neurología, Departamento de Medicina, Clínica Alemana‐Universidad del Desarrollo Santiago Chile
- Memory and Neuropsychiatric Clinic (CMYN) Neurology Department, Hospital del Salvador and Faculty of Medicine, Universidad de Chile Santiago Chile
- Physiopathology Department, ICBM East Neuroscience Department, Faculty of Medicine, Universidad de Chile Santiago Chile
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21
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Whear SA, Wilson G, Kourtesis PA, Parra MA. Factors influencing acceptance of technology across age: Amid the COVID‐19 pandemic. Alzheimers Dement 2021. [PMCID: PMC9011713 DOI: 10.1002/alz.055102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Background Digital technologies are creating unprecedented opportunities to improve and increase support to older people with cognitive and mental health problems, and to their family and carers. However, barriers that preclude the implementation of technology driven programs for the assessment and intervention of adults at risk of cognitive decline need to be better understood. This study investigated these outstanding issues, as well as considering the impact that the COVID‐19 Pandemic has had on such barriers. Methods A sample of 105 participants completed an online survey. Their ages ranged from 18 to 92 years. Of these, 72% were female, 83% had higher education and beyond, 42% were working, 42% were retired, and 14% were unemployed. The questionnaires assessed IT experience alongside awareness, attitudes, and stigmas regarding the use of technologies, particularly those used to support cognitive and mental health. Questionnaires also explored the impact of the COVID‐19 pandemic on these technology‐related factors. We compared these across groups of young (n=45), middle age (n=12) and older adults (n=48). Results Relative to younger participants, older participants were less aware of, and held stronger stigmas against healthcare technologies, even though they reported more IT experience. IT awareness was associated to more positive (r=0.619, p<0.001) and less negative IT Attitudes (r=‐0.271, p=0.015), more acceptability (r=‐0.374, p=0.001) and receptiveness towards technologies (r=‐0.610, p<0.001). Male participants appeared to be more aware of such technologies than female participants. However, relative to men, women had increased the number of ways and frequency with which they used technologies since the COVID‐19 pandemic started, and older people in general felt more inclined to endorse the need to learn more about healthcare technologies. Conclusions Having more accumulated IT experience throughout our lives may not necessarily lead to better acceptance of healthcare technologies. More awareness about such specific technologies will help overcome stigmas, and challenging environments such as those imposed by the COVID‐19 pandemic may lead to positive changes in perception and acceptance of such technologies. These are necessary steps towards the personalisation of healthcare technologies to support vulnerable adults at risk of dementia.
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Affiliation(s)
| | | | - Panagiotis A Kourtesis
- National Research Institute of Computer Science and Automation Rennes France
- Research Institute of Computer Science and Random Systems Rennes France
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22
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Soto M, Camlla R, Vilca BC, Parra MA. Brain functional connectivity during visual short‐term memory binding after cognitive training in preclinical phases of dementia. Alzheimers Dement 2021. [DOI: 10.1002/alz.054735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Marcio Soto
- Universidad Nacional de San Agustin de Arequipa Arequipa Peru
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23
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Parra MA, Muniz‐Terrera G, Danso SO, Ritchie K, Ritchie CW. Memory assessment and dementia risk in the PREVENT Study. Alzheimers Dement 2021. [DOI: 10.1002/alz.055104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | - Graciela Muniz‐Terrera
- Centre for Dementia Prevention at the University of Edinburgh Edinburgh United Kingdom
- University of Edinburgh Edinburgh United Kingdom
| | | | - Karen Ritchie
- University of Edinburgh Edinburgh United Kingdom
- INSERM, Montpellier University, Neuropsychiatry: Epidemiological and Clinical Research Montpellier France
| | - Craig W. Ritchie
- Centre for Dementia Prevention at the University of Edinburgh Edinburgh United Kingdom
- Centre for Clinical Brain Sciences, The University of Edinburgh Edinburgh United Kingdom
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24
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Abstract
BACKGROUND Biological information drawn from eye-tracking metrics is providing evidence regarding drivers of cognitive decline in Alzheimer's disease. In particular, pupil size has proved useful to investigate cognitive performance during online activities. OBJECTIVE To investigate the oculomotor correlates of impaired performance of patients with mild Alzheimer's Clinical Syndrome (ACS) on a recently developed memory paradigm, namely the Short-Term Memory Binding Test (STMBT). METHODS We assessed a sample of eighteen healthy controls (HC) and eighteen patients with a diagnosis of mild ACS with the STMBT while we recorded their oculomotor behaviors using pupillometry and eye-tracking. RESULTS As expected, a group (healthy controls versus ACS) by condition (Unbound Colours versus Bound Colours) interaction was found whereby behavioral group differences were paramount in the Bound Colours condition. Healthy controls' pupils dilated significantly more in the Bound Colours than in the Unbound Colours condition, a discrepancy not observed in ACS patients. Furthermore, ROC analysis revealed the abnormal pupil behaviors distinguished ACS patients from healthy controls with values of sensitivity and specify of 100%, thus outperforming both recognition scores and gaze duration. CONCLUSION The biological correlates of Short-Term Memory Binding impairments appear to involve a network much wider than we have thought to date, which expands across cortical and subcortical structures. We discuss these findings focusing on their implications for our understanding of neurocognitive phenotypes in the preclinical stages of Alzheimer's disease and potential development of cognitive biomarkers that can support ongoing initiatives to prevent dementia.
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Affiliation(s)
- Gerardo Fernández
- Chief Scientific Officer, ViewMind Inc., New York, NY, USA.,Axis Neurociencias, Bahía Blanca, Argentina.,Instituto de Investigaciones en Ingeniería Eléctrica (IIIE) (UNS-CONICET), Bahía Blanca, Buenos Aires, Argentina
| | - Mario A Parra
- School of Psychological Sciences and Health, University of Strathclyde, Glasgow, UK
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25
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Ibanez A, Parra MA, Butler C. The Latin America and the Caribbean Consortium on Dementia (LAC-CD): From Networking to Research to Implementation Science. J Alzheimers Dis 2021; 82:S379-S394. [PMID: 33492297 PMCID: PMC8293660 DOI: 10.3233/jad-201384] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
In comparison with other regions, dementia prevalence in Latin America is growing rapidly, along with the consequent clinical, social, and economic burden upon patients and their families. The combination of fragile health care systems, large social inequalities, and isolated clinical and research initiatives makes the coordination of efforts imperative. The Latin America and the Caribbean Consortium on Dementia (LAC-CD) is a regional organization overseeing and promoting clinical and research activities on dementia. Here, we first provide an overview of the consortium, highlighting the antecedents and current mission. Then, we present the consortium’s regional research, including the multi-partner consortium to expand dementia research in Latin America (ReDLat), which aims to identify the unique genetic, social, and economic factors that drive Alzheimer’s and frontotemporal dementia presentation in LAC relative to the US. We describe an extension of ReDLat which aims to develop affordable markers of disease subtype and severity using high density EEG. We introduce current initiatives promoting regional diagnosis, visibility, and capacity, including the forthcoming launch of the Latin American Brain Health Institute (BrainLat). We discuss LAC-CD-led advances in brain health diplomacy, including an assessment of responses to the impact of COVID-19 on people with dementia and examining the knowledge of public policies among experts in the region. Finally, we present the current knowledge-to-action framework, which paves the way for a future regional action plan. Coordinated actions are crucial to forging strong regional bonds, supporting the implementation of regional dementia plans, improving health systems, and expanding research collaborations across Latin America.
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Affiliation(s)
- Agustin Ibanez
- Global Brain Health Institute (GBHI), University of California San Francisco (UCSF), San Francisco, CA, USA.,Cognitive Neuroscience Center (CNC), Universidad de San Andrés, Buenos Aires, Argentina.,National Scientific and Technical Research Council (CONICET), Buenos Aires, Argentina.,Universidad Autónoma del Caribe, Barranquilla, Barranquilla, Colombia.,Latin American Institute for Brain Health (BrainLat), Center for Social and Cognitive Neuroscience (CSCN), Universidad Adolfo Ibanez, Santiago de Chile, Chile
| | - Mario A Parra
- Universidad Autónoma del Caribe, Barranquilla, Barranquilla, Colombia.,School of Psychological Sciences and Health, University of Strathclyde, Glasgow, UK
| | - Christopher Butler
- Department of Brain Sciences, Imperial College London, UK.,Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, UK.,Instituto de Neurología Cognitiva, Buenos Aires, Argentina.,Departamento de Neurología, Pontificia Universidad de Chile, Santiago, Chile
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26
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Brambilla M, Parra MA, Della Sala S, Alemanno F, Pomati S. Challenges to recruitment of participants with MCI in a multicentric neuropsychological study. Aging Clin Exp Res 2021; 33:2007-2010. [PMID: 33052589 DOI: 10.1007/s40520-020-01729-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Accepted: 09/26/2020] [Indexed: 11/30/2022]
Abstract
BACKGROUND Data on recruitment of Mild Cognitive Impairment (MCI) samples are seldom reported and this issue can be an important source of research waste. AIM To describe the recruitment challenges and reasons for non-eligibility faced during a bi-centre clinical study assessing the predictive value of a neuropsychological battery of the progression to dementia. METHODS Potential MCI participants were identified from databases of the two memory clinics based in Milan (Italy) and invited to the screening assessment. RESULTS About 50% of the cases initially identified were ineligible according to inclusion/exclusion criteria and the two sites took 22 months to recruit the planned 150 people. The main reasons for non-eligibility were the MMSE score (41%), age (14%), presence of cerebrovascular disorders (9%), perceptual deficits (6%), neurological (6%) or psychiatric (4%) comorbidities and low education (5%). CONCLUSION Awareness of the reasons for exclusion and of the time needed to recruit the planned sample would provide hints for the planning of future studies on MCI.
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Affiliation(s)
- Michela Brambilla
- Neurology Unit, Centre for the Treatment and Study of Cognitive Disorders, Luigi Sacco Hospital, Via Giovanni Battista Grassi 74, 20157, Milan, Italy
| | - Mario A Parra
- School of Psychological Sciences and Health, University of Strathclyde, Glasgow, UK
| | - Sergio Della Sala
- Human Cognitive Neuroscience, Psychology, University of Edinburgh, Edinburgh, UK
| | - Federica Alemanno
- Department of Clinical Neuroscience, Specialistic Neurorehabilitation of Neurological, Cognitive and Motor Disorders, San Raffaele Scientific Institute, Milan, Italy
| | - Simone Pomati
- Neurology Unit, Centre for the Treatment and Study of Cognitive Disorders, Luigi Sacco Hospital, Via Giovanni Battista Grassi 74, 20157, Milan, Italy.
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27
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Duran-Aniotz C, Orellana P, Leon Rodriguez T, Henriquez F, Cabello V, Aguirre-Pinto MF, Escobedo T, Takada LT, Pina-Escudero SD, Lopez O, Yokoyama JS, Ibanez A, Parra MA, Slachevsky A. Systematic Review: Genetic, Neuroimaging, and Fluids Biomarkers for Frontotemporal Dementia Across Latin America Countries. Front Neurol 2021; 12:663407. [PMID: 34248820 PMCID: PMC8263937 DOI: 10.3389/fneur.2021.663407] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Accepted: 05/27/2021] [Indexed: 11/13/2022] Open
Abstract
Frontotemporal dementia (FTD) includes a group of clinically, genetically, and pathologically heterogeneous neurodegenerative disorders, affecting the fronto-insular-temporal regions of the brain. Clinically, FTD is characterized by progressive deficits in behavior, executive function, and language and its diagnosis relies mainly on the clinical expertise of the physician/consensus group and the use of neuropsychological tests and/or structural/functional neuroimaging, depending on local availability. The modest correlation between clinical findings and FTD neuropathology makes the diagnosis difficult using clinical criteria and often leads to underdiagnosis or misdiagnosis, primarily due to lack of recognition or awareness of FTD as a disease and symptom overlap with psychiatric disorders. Despite advances in understanding the underlying neuropathology of FTD, accurate and sensitive diagnosis for this disease is still lacking. One of the major challenges is to improve diagnosis in FTD patients as early as possible. In this context, biomarkers have emerged as useful methods to provide and/or complement clinical diagnosis for this complex syndrome, although more evidence is needed to incorporate most of them into clinical practice. However, most biomarker studies have been performed using North American or European populations, with little representation of the Latin American and the Caribbean (LAC) region. In the LAC region, there are additional challenges, particularly the lack of awareness and knowledge about FTD, even in specialists. Also, LAC genetic heritage and cultures are complex, and both likely influence clinical presentations and may modify baseline biomarker levels. Even more, due to diagnostic delay, the clinical presentation might be further complicated by both neurological and psychiatric comorbidity, such as vascular brain damage, substance abuse, mood disorders, among others. This systematic review provides a brief update and an overview of the current knowledge on genetic, neuroimaging, and fluid biomarkers for FTD in LAC countries. Our review highlights the need for extensive research on biomarkers in FTD in LAC to contribute to a more comprehensive understanding of the disease and its associated biomarkers. Dementia research is certainly reduced in the LAC region, highlighting an urgent need for harmonized, innovative, and cross-regional studies with a global perspective across multiple areas of dementia knowledge.
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Affiliation(s)
- Claudia Duran-Aniotz
- Latin American Institute for Brain Health (BrainLat), Universidad Adolfo Ibanez, Santiago, Chile
- Center for Social and Cognitive Neuroscience (CSCN), School of Psychology, Universidad Adolfo Ibanez, Santiago, Chile
| | - Paulina Orellana
- Latin American Institute for Brain Health (BrainLat), Universidad Adolfo Ibanez, Santiago, Chile
- Center for Social and Cognitive Neuroscience (CSCN), School of Psychology, Universidad Adolfo Ibanez, Santiago, Chile
| | - Tomas Leon Rodriguez
- Trinity College, Global Brain Health Institute, Dublin, Ireland
- Memory and Neuropsychiatric Clinic (CMYN) Neurology Department, Hospital del Salvador and Faculty of Medicine, University of Chile, Santiago, Chile
| | - Fernando Henriquez
- Neuropsychology and Clinical Neuroscience Laboratory (LANNEC), Physiopathology Department - Institute of Biomedical Sciences (ICBM), Neuroscience and East Neuroscience Departments, Faculty of Medicine, University of Chile, Santiago, Chile
- Geroscience Center for Brain Health and Metabolism (GERO), Santiago, Chile
| | - Victoria Cabello
- Neuropsychology and Clinical Neuroscience Laboratory (LANNEC), Physiopathology Department - Institute of Biomedical Sciences (ICBM), Neuroscience and East Neuroscience Departments, Faculty of Medicine, University of Chile, Santiago, Chile
- Geroscience Center for Brain Health and Metabolism (GERO), Santiago, Chile
| | | | - Tamara Escobedo
- Latin American Institute for Brain Health (BrainLat), Universidad Adolfo Ibanez, Santiago, Chile
- Center for Social and Cognitive Neuroscience (CSCN), School of Psychology, Universidad Adolfo Ibanez, Santiago, Chile
| | - Leonel T. Takada
- Cognitive and Behavioral Neurology Unit - Department of Neurology, University of São Paulo, São Paulo, Brazil
| | - Stefanie D. Pina-Escudero
- Global Brain Health Institute (GBHI), University of California San Francisco (UCSF), San Francisco, CA, United States
- UCSF Department of Neurology, Memory and Aging Center, UCSF, San Francisco, CA, United States
| | - Oscar Lopez
- Department of Neurology, School of Medicine, University of Pittsburgh, Pittsburgh, PA, United States
- Department of Psychiatry, School of Medicine, University of Pittsburgh, Pittsburgh, PA, United States
| | - Jennifer S. Yokoyama
- Global Brain Health Institute (GBHI), University of California San Francisco (UCSF), San Francisco, CA, United States
- UCSF Department of Neurology, Memory and Aging Center, UCSF, San Francisco, CA, United States
| | - Agustin Ibanez
- Latin American Institute for Brain Health (BrainLat), Universidad Adolfo Ibanez, Santiago, Chile
- Center for Social and Cognitive Neuroscience (CSCN), School of Psychology, Universidad Adolfo Ibanez, Santiago, Chile
- Trinity College, Global Brain Health Institute, Dublin, Ireland
- Global Brain Health Institute (GBHI), University of California San Francisco (UCSF), San Francisco, CA, United States
- Cognitive Neuroscience Center (CNC), Universidad de San Andrés, & National Scientific and Technical Research Council (CONICET), Buenos Aires, Argentina
| | - Mario A. Parra
- School of Psychological Sciences and Health, University of Strathclyde, Glasgow, United Kingdom
| | - Andrea Slachevsky
- Memory and Neuropsychiatric Clinic (CMYN) Neurology Department, Hospital del Salvador and Faculty of Medicine, University of Chile, Santiago, Chile
- Neuropsychology and Clinical Neuroscience Laboratory (LANNEC), Physiopathology Department - Institute of Biomedical Sciences (ICBM), Neuroscience and East Neuroscience Departments, Faculty of Medicine, University of Chile, Santiago, Chile
- Geroscience Center for Brain Health and Metabolism (GERO), Santiago, Chile
- Cognitive and Behavioral Neurology Unit - Department of Neurology, University of São Paulo, São Paulo, Brazil
- Department of Neurology and Psychiatry, Clínica Alemana-Universidad del Desarrollo, Santiago, Chile
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Huggins CJ, Escudero J, Parra MA, Scally B, Anghinah R, Vitória Lacerda De Araújo A, Basile LF, Abasolo D. Deep learning of resting-state electroencephalogram signals for three-class classification of Alzheimer's disease, mild cognitive impairment and healthy ageing. J Neural Eng 2021; 18. [PMID: 34044374 DOI: 10.1088/1741-2552/ac05d8] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Accepted: 05/27/2021] [Indexed: 11/12/2022]
Abstract
Objective.This study aimed to produce a novel deep learning (DL) model for the classification of subjects with Alzheimer's disease (AD), mild cognitive impairment (MCI) subjects and healthy ageing (HA) subjects using resting-state scalp electroencephalogram (EEG) signals.Approach.The raw EEG data were pre-processed to remove unwanted artefacts and sources of noise. The data were then processed with the continuous wavelet transform, using the Morse mother wavelet, to create time-frequency graphs with a wavelet coefficient scale range of 0-600. The graphs were combined into tiled topographical maps governed by the 10-20 system orientation for scalp electrodes. The application of this processing pipeline was used on a data set of resting-state EEG samples from age-matched groups of 52 AD subjects (82.3 ± 4.7 years of age), 37 MCI subjects (78.4 ± 5.1 years of age) and 52 HA subjects (79.6 ± 6.0 years of age). This resulted in the formation of a data set of 16197 topographical images. This image data set was then split into training, validation and test images and used as input to an AlexNet DL model. This model was comprised of five hidden convolutional layers and optimised for various parameters such as learning rate, learning rate schedule, optimiser, and batch size.Main results.The performance was assessed by a tenfold cross-validation strategy, which produced an average accuracy result of 98.9 ± 0.4% for the three-class classification of AD vs MCI vs HA. The results showed minimal overfitting and bias between classes, further indicating the strength of the model produced.Significance.These results provide significant improvement for this classification task compared to previous studies in this field and suggest that DL could contribute to the diagnosis of AD from EEG recordings.
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Affiliation(s)
- Cameron J Huggins
- Centre for Biomedical Engineering, Department of Mechanical Engineering Sciences, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford, United Kingdom
| | - Javier Escudero
- School of Engineering, Institute for Digital Communications, University of Edinburgh, Edinburgh, United Kingdom
| | - Mario A Parra
- School of Psychological Sciences and Health, University of Strathclyde, Glasgow, United Kingdom
| | - Brian Scally
- Institute of Psychological Sciences, University of Leeds, Leeds, United Kingdom
| | - Renato Anghinah
- Reference Center of Behavioural Disturbances and Dementia, School of Medicine, University of São Paulo, São Paulo, Brazil.,Traumatic Brain Injury Cognitive Rehabilitation Out-Patient Center, University of São Paulo, São Paulo, Brazil
| | | | - Luis F Basile
- Division of Neurosurgery, University of São Paulo Medical School, University of São Paulo, São Paulo, Brazil
| | - Daniel Abasolo
- Centre for Biomedical Engineering, Department of Mechanical Engineering Sciences, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford, United Kingdom
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Cecchini MA, Yassuda MS, Squarzoni P, Coutinho AM, de Paula Faria D, Duran FLDS, Costa NAD, Porto FHDG, Nitrini R, Forlenza OV, Brucki SMD, Buchpiguel CA, Parra MA, Busatto GF. Deficits in short-term memory binding are detectable in individuals with brain amyloid deposition in the absence of overt neurodegeneration in the Alzheimer's disease continuum. Brain Cogn 2021; 152:105749. [PMID: 34022637 DOI: 10.1016/j.bandc.2021.105749] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 04/24/2021] [Accepted: 05/03/2021] [Indexed: 10/21/2022]
Abstract
The short-term memory binding (STMB) test involves the ability to hold in memory the integration between surface features, such as shapes and colours. The STMB test has been used to detect Alzheimer's disease (AD) at different stages, from preclinical to dementia, showing promising results. The objective of the present study was to verify whether the STMB test could differentiate patients with distinct biomarker profiles in the AD continuum. The sample comprised 18 cognitively unimpaired (CU) participants, 30 mild cognitive impairment (MCI) and 23 AD patients. All participants underwent positron emission tomography (PET) with Pittsburgh compound-B labelled with carbon-11 ([11C]PIB) assessing amyloid beta (Aβ) aggregation (A) and 18fluorine-fluorodeoxyglucose ([18F]FDG)-PET assessing neurodegeneration (N) (A-N- [n = 35]); A+N- [n = 11]; A+ N+ [n = 19]). Participants who were negative and positive for amyloid deposition were compared in the absence (A-N- vs. A+N-) of neurodegeneration. When compared with the RAVLT and SKT memory tests, the STMB was the only cognitive task that differentiated these groups, predicting the group outcome in logistic regression analyses. The STMB test showed to be sensitive to the signs of AD pathology and may represent a cognitive marker within the AD continuum.
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Affiliation(s)
- Mario Amore Cecchini
- Human Cognitive Neuroscience, Psychology, University of Edinburgh, Edinburgh, United Kingdom
| | - Mônica Sanches Yassuda
- Neurology, School of Medicine, University of São Paulo, São Paulo, Brazil; Gerontology, School of Arts, Sciences and Humanities, University of São Paulo, São Paulo, Brazil.
| | - Paula Squarzoni
- Laboratory of Psychiatric Neuroimaging (LIM-21), Departamento e Instituto de Psiquiatria, Hospital das Clínicas, School of Medicine, University of São Paulo, São Paulo, Brazil
| | - Artur Martins Coutinho
- Laboratory of Psychiatric Neuroimaging (LIM-21), Departamento e Instituto de Psiquiatria, Hospital das Clínicas, School of Medicine, University of São Paulo, São Paulo, Brazil; Laboratory of Nuclear Medicine (LIM43), Centro de Medicina Nuclear, Department of Radiology and Oncology, School of Medicine, University of São Paulo, São Paulo, Brazil
| | - Daniele de Paula Faria
- Laboratory of Neuroscience (LIM 27), Department of Psychiatry, School of Medicine, University of São Paulo, São Paulo, Brazil; Núcleo de Apoio a Pesquisa em Neurociência Aplicada (NAPNA), University of São Paulo, São Paulo, Brazil
| | - Fábio Luiz de Souza Duran
- Laboratory of Psychiatric Neuroimaging (LIM-21), Departamento e Instituto de Psiquiatria, Hospital das Clínicas, School of Medicine, University of São Paulo, São Paulo, Brazil
| | - Naomi Antunes da Costa
- Laboratory of Psychiatric Neuroimaging (LIM-21), Departamento e Instituto de Psiquiatria, Hospital das Clínicas, School of Medicine, University of São Paulo, São Paulo, Brazil
| | - Fábio Henrique de Gobbi Porto
- Laboratory of Psychiatric Neuroimaging (LIM-21), Departamento e Instituto de Psiquiatria, Hospital das Clínicas, School of Medicine, University of São Paulo, São Paulo, Brazil
| | - Ricardo Nitrini
- Neurology, School of Medicine, University of São Paulo, São Paulo, Brazil
| | - Orestes Vicente Forlenza
- Laboratory of Neuroscience (LIM 27), Department of Psychiatry, School of Medicine, University of São Paulo, São Paulo, Brazil
| | | | - Carlos Alberto Buchpiguel
- Laboratory of Nuclear Medicine (LIM43), Centro de Medicina Nuclear, Department of Radiology and Oncology, School of Medicine, University of São Paulo, São Paulo, Brazil
| | - Mario A Parra
- School of Psychological Sciences and Health, University of Strathclyde, Glasgow, United Kingdom
| | - Geraldo F Busatto
- Laboratory of Psychiatric Neuroimaging (LIM-21), Departamento e Instituto de Psiquiatria, Hospital das Clínicas, School of Medicine, University of São Paulo, São Paulo, Brazil; Núcleo de Apoio a Pesquisa em Neurociência Aplicada (NAPNA), University of São Paulo, São Paulo, Brazil
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Kozlova I, Parra MA, Titova N, Gantman M, Sala SD. Alzheimer's Disease and Parkinson Dementia Distinguished by Cognitive Marker. Arch Clin Neuropsychol 2021; 36:307-315. [PMID: 32101280 DOI: 10.1093/arclin/acz082] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Revised: 12/09/2019] [Accepted: 12/12/2019] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Temporary memory binding (TMB) has been shown to be specifically affected by Alzheimer's disease (AD) when it is assessed via free recall and titrating the task demands to equate baseline performance across patients. METHODS Patients with Parkinson's disease (PD) were subdivided into patients with and without cognitive impairment and compared with AD and amnestic mild cognitive impairment (aMCI) patients on their performance on the TMB. RESULTS The results show that only patients with AD dementia present with impaired TMB performance. Receiver operating characteristic curve analyses showed that TMB holds high sensitivity and specificity for aMCI and AD relative to PD groups and healthy controls. CONCLUSION The TMB is sensitive to the neurodegenerative mechanisms leading to AD dementia but not to those underpinning PD dementia. As such, TMB task can aid the differential diagnosis of these common forms of dementia.
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Affiliation(s)
- Irina Kozlova
- Human Cognitive Neuroscience, Psychology Department, University of Edinburgh, UK
| | - Mario A Parra
- School of Psychological Sciences and Health, University of Strathclyde, Glasgow, UK
- Centre for Cognitive Ageing and Cognitive Epidemiology, University of Edinburgh, UK
- Alzheimer's Scotland Dementia Research Centre, Edinburgh University, UK
- Autonomous University of the Caribbean, Barranquilla, Colombia
| | - Nataliya Titova
- Neurology and Neurosurgery Department, Pirogov Russian National Research Medical University, Moscow, Russia
| | - Maria Gantman
- Department of Alzheimer's Diseases and Related Disorders, Mental Health Research Centre, Moscow, Russia
| | - Sergio Della Sala
- Human Cognitive Neuroscience, Psychology Department, University of Edinburgh, UK
- Centre for Cognitive Ageing and Cognitive Epidemiology, University of Edinburgh, UK
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Trujillo N, Gómez D, Trujillo S, López JD, Ibáñez A, Parra MA. Attentional bias during emotional processing: Behavioral and electrophysiological evidence from an Emotional Flanker Task. PLoS One 2021; 16:e0249407. [PMID: 33798215 PMCID: PMC8018632 DOI: 10.1371/journal.pone.0249407] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Accepted: 03/18/2021] [Indexed: 11/19/2022] Open
Abstract
Threatening stimuli seem to capture attention more swiftly than neutral stimuli. This attention bias has been observed under different experimental conditions and with different types of stimuli. It remains unclear whether this adaptive behaviour reflects the function of automatic or controlled attention mechanisms. Additionally, the spatiotemporal dynamics of its neural correlates are largely unknown. The present study investigates these issues using an Emotional Flanker Task synchronized with EEG recordings. A group of 32 healthy participants saw response-relevant images (emotional scenes from IAPS or line drawings of objects) flanked by response-irrelevant distracters (i.e., emotional scenes flanked by line drawings or vice versa). We assessed behavioural and ERP responses drawn from four task conditions (Threat-Central, Neutral-Central, Threat-Peripheral, and Neutral-Peripheral) and subjected these responses to repeated-measures ANOVA models. When presented as response-relevant targets, threatening images attracted faster and more accurate responses. They did not affect response accuracy to targets when presented as response-irrelevant flankers. However, response times were significantly slower when threatening images flanked objects than when neutral images were shown as flankers. This result replicated the well-known Emotional Flanker Effect. Behavioural responses to response-relevant threatening targets were accompanied by significant modulations of ERP activity across all time-windows and regions of interest and displayed some meaningful correlations. The Emotional Flanker Effect was accompanied by a modulation over parietal and central-parietal regions within a time-window between 550-690ms. Such a modulation suggests that the attentional disruption to targets caused by response-irrelevant threatening flankers appears to reflect less neural resources available, which are seemingly drawn away by distracting threatening flankers. The observed spatiotemporal dynamics seem to concur with understanding of the important adaptive role attributed to threat-related attention bias.
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Affiliation(s)
- Natalia Trujillo
- Neuroscience Group, University of Antioquia UdeA, Medellín, Colombia
- GISAME, Facultad Nacional de Salud Pública, Universidad de Antioquia UdeA Medellín, Medellín, Colombia
| | - Diana Gómez
- GISAME, Facultad Nacional de Salud Pública, Universidad de Antioquia UdeA Medellín, Medellín, Colombia
- SISTEMIC, Facultad de Ingeniería, Universidad de Antioquia UdeA, Medellín, Colombia
| | - Sandra Trujillo
- Neuroscience Group, University of Antioquia UdeA, Medellín, Colombia
- GISAME, Facultad Nacional de Salud Pública, Universidad de Antioquia UdeA Medellín, Medellín, Colombia
| | - José David López
- SISTEMIC, Facultad de Ingeniería, Universidad de Antioquia UdeA, Medellín, Colombia
| | - Agustín Ibáñez
- Global Brain Health Institute (GBHI), University of California San Francisco (UCSF), San Francisco, California, United States of America
- Trinity College Dublin (TCD), Dublin, Ireland
- Cognitive Neuroscience Center (CNC), Universidad de San Andrés, Buenos Aires, Argentina
- National Scientific and Technical Research Council (CONICET), Buenos Aires, Argentina
- Latin American Institute for Brain Health (BrainLat), Universidad Adolfo Ibanez, Santiago, Chile
| | - Mario A. Parra
- Neuroscience Group, University of Antioquia UdeA, Medellín, Colombia
- School of Psychological Sciences & Health, University of Strathclyde, Glasgow, United Kingdom
- Universidad Autónoma del Caribe, Barranquilla, Colombia
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Guinea SF, Zurita M, Mucientes J, García E, Marqués JG, Parra MA, Vaquero J. Impact of intrathecal cell therapy with autologous stromal cells on short‐term memory binding in early Alzheimer’s disease: One‐year follow‐up assessment. Alzheimers Dement 2020. [DOI: 10.1002/alz.044959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | - Mercedes Zurita
- Neurosurgery Service, Puerta de Hierro‐Majadahonda Hospital Autonomous University Madrid Spain
| | - Jorge Mucientes
- Neurosurgery Service, Puerta de Hierro‐Majadahonda Hospital Autonomous University Madrid Spain
| | | | | | - Mario A. Parra
- Universidad Autónoma de Caribe Barranquilla Colombia
- University of Strathclyde Glasgow United Kingdom
| | - Jesús Vaquero
- Neurosurgery Service, Puerta de Hierro‐Majadahonda Hospital Autonomous University Madrid Spain
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Parra MA, Chan KY, Ibanez A. Global networks to address inequities and disparities in dementia: The case of LAC‐CD and GLoDePP. Alzheimers Dement 2020. [DOI: 10.1002/alz.044953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Mario A Parra
- Universidad Autónoma de Caribe Barranquilla Colombia
- University of Strathclyde Glasgow United Kingdom
| | - Kit Yee Chan
- Nossal Institute for Global Health Melbourne School of Population and Global Health Melbourne Australia
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Soto M, Vilca BNC, Camlla R, Dengri L, Fernández RB, Maestú F, Parra MA. Effects of cognitive training program on brain connectivity in older adults with subjective cognitive complaints and mild cognitive impairment. Alzheimers Dement 2020. [DOI: 10.1002/alz.046034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Marcio Soto
- Universidad Nacional de San Agustin de Arequipa Arequipa Peru
| | - Brenda Nadia Chino Vilca
- Universidad Nacional de San Agustín Arequipa Peru
- Centro de Tecnología Biomédica Madrid Spain
- Autonomous University of Barcelona Barcelona Spain
| | | | - Lucia Dengri
- Universidad Nacional de San Agustin de Arequipa Arequipa Peru
| | | | - Fernando Maestú
- Complutense University of Madrid Madrid Spain
- Center for Biomedical Technology Universidad Complutense and Universidad Politécnica de Madrid Madrid Spain
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Parra MA, Schumacher M, Fernández G. A novel peripheral biomarker for mild cognitive impairment and Alzheimer’s disease. Alzheimers Dement 2020. [DOI: 10.1002/alz.044956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Mario A Parra
- Universidad Autónoma de Caribe Barranquilla Colombia
- University of Strathclyde Glasgow United Kingdom
| | | | - Gerardo Fernández
- Instituto de Investigaciones en Ingeniería Eléctrica “Alfredo Desages” Bahía Blanca Argentina
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Calia C, Pickett E, O'Donal F, Parra MA. Functional assessment of cognitively impaired older adults: Are we asking the right questions? Alzheimers Dement 2020. [DOI: 10.1002/alz.044948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Clara Calia
- Heriot Watt University Edinburgh United Kingdom
| | | | | | - Mario A. Parra
- Universidad Autónoma de Caribe Barranquilla Colombia
- University of Strathclyde Glasgow United Kingdom
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Calia C, O'Donal F, Pickett E, Parra MA. Does feature binding account for functional decline in patients with mild cognitive impairment? Evidence from the Details of Function of Everyday Life Questionnaire (DoFEL). Alzheimers Dement 2020. [DOI: 10.1002/alz.044921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Clara Calia
- University of Edinburgh Edinburgh United Kingdom
| | | | | | - Mario A. Parra
- Universidad Autónoma de Caribe Barranquilla Colombia
- University of Strathclyde Glasgow United Kingdom
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Parra MA, Custodio N, Montesinos R, Pintado Caipa M, Reynoso‐Guzman W, Slachevsky A. Cultural validity of cognitive markers for Alzheimer’s disease (AD): Evidence for global strategies. Alzheimers Dement 2020. [DOI: 10.1002/alz.045356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Mario A. Parra
- Universidad Autónoma de Caribe Barranquilla Colombia
- University of Strathclyde Glasgow United Kingdom
| | | | | | - Maritza Pintado Caipa
- Global Brain Health Institute at University of California of San Francisco San Francisco CA USA
| | - Wylliams Reynoso‐Guzman
- Research Unity, Instituto Peruano de Neurociencias Lima Peru
- Cognitive Decline and Dementia Diagnostic and Prevention Services Unit, Instituto Peruano de Neurociencias Lima Peru
| | - Andrea Slachevsky
- Memory and Neuropsychiatric Clinic (CMYN) Neurology Department‐ Hospital del Salvador & University of Chile Santiago Chile
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Junquera Fernández A, García E, Parra MA, Fernández Guinea S. Patterns of brain atrophy in dysexecutive amnestic mild cognitive impairment raise confidence about prodromal AD dementia. Alzheimers Dement 2020. [DOI: 10.1002/alz.046365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Slachevsky A, Zitko P, Martínez-Pernía D, Forno G, Court FA, Lillo P, Villagra R, Duran-Aniotz C, Parrao T, Assar R, Orellana P, Toledo C, Rivera R, Ibañez A, Parra MA, González-Billault C, Amieva H, Thumala D. GERO Cohort Protocol, Chile, 2017-2022: Community-based Cohort of Functional Decline in Subjective Cognitive Complaint elderly. BMC Geriatr 2020; 20:505. [PMID: 33238908 PMCID: PMC7690082 DOI: 10.1186/s12877-020-01866-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 11/03/2020] [Indexed: 11/03/2022] Open
Abstract
BACKGROUND With the global population aging and life expectancy increasing, dementia has turned a priority in the health care system. In Chile, dementia is one of the most important causes of disability in the elderly and the most rapidly growing cause of death in the last 20 years. Cognitive complaint is considered a predictor for cognitive and functional decline, incident mild cognitive impairment, and incident dementia. The GERO cohort is the Chilean core clinical project of the Geroscience Center for Brain Health and Metabolism (GERO). The objective of the GERO cohort is to analyze the rate of functional decline and progression to clinical dementia and their associated risk factors in a community-dwelling elderly with subjective cognitive complaint, through a population-based study. We also aim to undertake clinical research on brain ageing and dementia disorders, to create data and biobanks with the appropriate infrastructure to conduct other studies and facilitate to the national and international scientific community access to the data and samples for research. METHODS The GERO cohort aims the recruitment of 300 elderly subjects (> 70 years) from Santiago (Chile), following them up for at least 3 years. Eligible people are adults not diagnosed with dementia with subjective cognitive complaint, which are reported either by the participant, a proxy or both. Participants are identified through a household census. The protocol for evaluation is based on a multidimensional approach including socio-demographic, biomedical, psychosocial, neuropsychological, neuropsychiatric and motor assessments. Neuroimaging, blood and stool samples are also obtained. This multidimensional evaluation is carried out in a baseline and 2 follow-ups assessments, at 18 and 36 months. In addition, in months 6, 12, 24, and 30, a telephone interview is performed in order to keep contact with the participants and to assess general well-being. DISCUSSION Our work will allow us to determine multidimensional risks factors associated with functional decline and conversion to dementia in elderly with subjective cognitive complain. The aim of our GERO group is to establish the capacity to foster cutting edge and multidisciplinary research on aging in Chile including basic and clinical research. TRIAL REGISTRATION NCT04265482 in ClinicalTrials.gov. Registration Date: February 11, 2020. Retrospectively Registered.
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Affiliation(s)
- Andrea Slachevsky
- Geroscience Center for Brain Health and Metabolism (GERO), Santiago, Chile.
- Neuropsychology and Clinical Neuroscience Laboratory (LANNEC), Physiopathology Department - Institute of Biomedical Sciences (ICBM), Neuroscience and East Neuroscience Departments, Faculty of Medicine, University of Chile, Santiago, Chile.
- Memory and Neuropsychiatric Clinic (CMYN) Neurology Department, Hospital del Salvador and Faculty of Medicine, University of Chile, Santiago, Chile.
- Department of Neurology and Psychiatry, Clínica Alemana-Universidad del Desarrollo, Santiago, Chile.
- Department of Neurosciences, Faculty of Medicine, Universidad de Chile, Santiago, Chile.
| | - Pedro Zitko
- Geroscience Center for Brain Health and Metabolism (GERO), Santiago, Chile
- Health Service & Population Research Department, IoPPN, King's College London, London, UK
- Escuela de Salud Pública, Universidad de Chile, Santiago, Chile
| | - David Martínez-Pernía
- Geroscience Center for Brain Health and Metabolism (GERO), Santiago, Chile
- Memory and Neuropsychiatric Clinic (CMYN) Neurology Department, Hospital del Salvador and Faculty of Medicine, University of Chile, Santiago, Chile
- Center for Social and Cognitive Neuroscience (CSCN), School of Psychology, Universidad Adolfo Ibáñez, Santiago, Chile
| | - Gonzalo Forno
- Geroscience Center for Brain Health and Metabolism (GERO), Santiago, Chile
- Neuropsychology and Clinical Neuroscience Laboratory (LANNEC), Physiopathology Department - Institute of Biomedical Sciences (ICBM), Neuroscience and East Neuroscience Departments, Faculty of Medicine, University of Chile, Santiago, Chile
- Memory and Neuropsychiatric Clinic (CMYN) Neurology Department, Hospital del Salvador and Faculty of Medicine, University of Chile, Santiago, Chile
| | - Felipe A Court
- Geroscience Center for Brain Health and Metabolism (GERO), Santiago, Chile
- Center for Integrative Biology, Faculty of Sciences, Universidad Mayor, Santiago, Chile
- The Buck Institute for Research on Aging, Novato, USA
| | - Patricia Lillo
- Geroscience Center for Brain Health and Metabolism (GERO), Santiago, Chile
- South Neurology Department, Faculty of Medicine, University of Chile, Santiago, Chile
- Unidad de Neurología, Hospital San José, Santiago, Chile
| | - Roque Villagra
- Geroscience Center for Brain Health and Metabolism (GERO), Santiago, Chile
- East Neurology Department, Faculty of Medicine, University of Chile, Santiago, Chile
| | - Claudia Duran-Aniotz
- Center for Social and Cognitive Neuroscience (CSCN), School of Psychology, Universidad Adolfo Ibáñez, Santiago, Chile
| | - Teresa Parrao
- Geroscience Center for Brain Health and Metabolism (GERO), Santiago, Chile
- Facultad de Psicología, Universidad Alberto Hurtado, Santiago, Chile
| | - Rodrigo Assar
- Geroscience Center for Brain Health and Metabolism (GERO), Santiago, Chile
- Institute of Biomedical Sciences (ICBM), Faculty of Medicine, University of Chile, Santiago, Chile
| | - Paulina Orellana
- Geroscience Center for Brain Health and Metabolism (GERO), Santiago, Chile
| | - Carolina Toledo
- Geroscience Center for Brain Health and Metabolism (GERO), Santiago, Chile
| | - Rodrigo Rivera
- Neuroradiologic Department, Instituto de Neurocirugia Asenjo, SSMO, Santiago, Chile
| | - Agustín Ibañez
- Center for Social and Cognitive Neuroscience (CSCN), School of Psychology, Universidad Adolfo Ibáñez, Santiago, Chile
- Cognitive Neuroscience Center (CNC), Universidad de San Andrés, Buenos Aires, Argentina
- National Scientific and Technical Research Council (CONICET), Buenos Aires, Argentina
- Universidad Autónoma del Caribe, Barranquilla, Colombia
- Global Brain Health Institute (GBHI), University of California San Francisco (UCSF), California, USA
| | - Mario A Parra
- Universidad Autónoma del Caribe, Barranquilla, Colombia
- Psychology Department, School of Psychological Sciences & Health, University of Strathclyde, Glasgow, UK
| | - Christian González-Billault
- Geroscience Center for Brain Health and Metabolism (GERO), Santiago, Chile
- Department of Neurosciences, Faculty of Medicine, Universidad de Chile, Santiago, Chile
- The Buck Institute for Research on Aging, Novato, USA
- Department of Biology, Faculty of Sciences, Universidad de Chile, Santiago, Chile
| | - Helena Amieva
- INSERM, Bordeaux Population Health Research Center, UMR 1219, Univ. Bordeaux, F-33000, Bordeaux, France
| | - Daniela Thumala
- Geroscience Center for Brain Health and Metabolism (GERO), Santiago, Chile
- Escuela de Psicologia, Facultad de Ciencias Sociales, University of Chile, Santiago, Chile
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41
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Cecchini MA, Foss MP, Tumas V, Patrocinio FAP, Chiari-Correia RD, Novaretti N, Brozinga TR, Bahia VS, de Souza LC, Cerqueira Guimarães H, Caramelli P, Lima-Silva TB, Cassimiro L, Brucki SMD, Nitrini R, Della Sala S, Parra MA, Yassuda MS. Profiles of cognitive impairment in the continuum from normal cognition to Alzheimer's clinical syndrome: Contributions of the short-term memory binding tests. Int J Geriatr Psychiatry 2020; 35:1331-1340. [PMID: 32584463 DOI: 10.1002/gps.5370] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Accepted: 06/21/2020] [Indexed: 11/12/2022]
Abstract
BACKGROUND Short-term memory binding (STMB) tests assess conjunctive binding, in which participants should remember the integration of features, such as shapes (or objects) and colors, forming a unique representation in memory. In this study, we investigated two STMB paradigms: change detection (CD) and free recall (FR). OBJECTIVE To investigate the cognitive profile in the CD and FR tasks of three diagnostic groups: cognitively unimpaired (CU), mild cognitive impairment (MCI), and Alzheimer's clinical syndrome (ACS). In addition, we aimed to calculate and compare the accuracy of the CD and FR tasks to identify MCI and ACS. METHODS Participants were 24 CU, 24 MCI, and 37 ACS. The cognitive scores of the clinical groups were compared using analysis of variance (ANOVA) and receiver-operating characteristic (ROC) analyses were carried out to verify the accuracy of the STMB tasks. RESULTS In the CD task, CU was different from MCI and ACS (CU > MCI = ACS), while in the FR task all groups were different (CU > MCI > ACS). The ROC analyses showed an area under the curve (AUC) of 0.855 comparing CU with MCI for the CD task and 0.975 for the FR. The AUC comparing CU and ACS was 0.924 for the CD and 0.973 for the FR task. The FR task showed better accuracy to identify MCI patients, and the same accuracy to detect ACS. CONCLUSION The present findings indicate that impairments in CD and FR of bound representations are features of the cognitive profiles of MCI and ACS patients.
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Affiliation(s)
- Mario Amore Cecchini
- Neurology, School of Medicine, University of São Paulo, Sao Paulo, Brazil.,Human Cognitive Neuroscience, Psychology, University of Edinburgh, Edinburgh, UK
| | - Maria Paula Foss
- Neurology, School of Medicine, University of São Paulo Ribeirão Preto, Sao Paulo, Brazil
| | - Vitor Tumas
- Neurology, School of Medicine, University of São Paulo Ribeirão Preto, Sao Paulo, Brazil
| | - Flávia A P Patrocinio
- Neurology, School of Medicine, University of São Paulo Ribeirão Preto, Sao Paulo, Brazil
| | - Rodolfo D Chiari-Correia
- Center of Image Sciences and Medical Physics, University of Sao Paulo Ribeirão Preto, Sao Paulo, Brazil
| | - Nathalia Novaretti
- Neurology, School of Medicine, University of São Paulo Ribeirão Preto, Sao Paulo, Brazil
| | - Tamara R Brozinga
- Neurology, School of Medicine, University of São Paulo Ribeirão Preto, Sao Paulo, Brazil
| | | | - Leonardo Cruz de Souza
- Grupo de Pesquisa em Neurologia Cognitiva e do Comportamento, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Henrique Cerqueira Guimarães
- Grupo de Pesquisa em Neurologia Cognitiva e do Comportamento, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Paulo Caramelli
- Grupo de Pesquisa em Neurologia Cognitiva e do Comportamento, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | | | - Luciana Cassimiro
- Neurology, School of Medicine, University of São Paulo, Sao Paulo, Brazil
| | | | - Ricardo Nitrini
- Neurology, School of Medicine, University of São Paulo, Sao Paulo, Brazil
| | - Sergio Della Sala
- Human Cognitive Neuroscience, Psychology, University of Edinburgh, Edinburgh, UK
| | - Mario A Parra
- School of Psychological Sciences and Health, University of Strathclyde, Glasgow, UK.,Department of Psychology, Universidad Autónoma del Caribe, Barranquilla, Colombia
| | - Mônica Sanches Yassuda
- Neurology, School of Medicine, University of São Paulo, Sao Paulo, Brazil.,Gerontology, School of Arts, Sciences and Humanities, University of São Paulo, Sao Paulo, Brazil
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42
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Junquera A, García-Zamora E, Olazarán J, Parra MA, Fernández-Guinea S. Role of Executive Functions in the Conversion from Mild Cognitive Impairment to Dementia. J Alzheimers Dis 2020; 77:641-653. [DOI: 10.3233/jad-200586] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Background: Recent research pointed to executive dysfunction as a potential early predictor of the progression of mild cognitive impairment (MCI) to dementia in Alzheimer’s clinical syndrome (ACS). Such cognitive impairments account for functional impairments in instrumental activities of daily living (IADL). Objective: The present study analyzes the contributions of executive functions to predict MCI–dementia progression in ACS. Methods: We assessed 145 participants, 51 cognitively unimpaired and 94 MCI. The latter were divided using the traditional, memory-based MCI classification (single domain amnestic, multidomain amnestic, and non-amnestic). Eight tests assessing executive functions were administered at baseline and at 1-year follow-up, together with cognitive screening tools and IADL measures. MCI patients were reclassified based on the outcomes from a K-mean cluster analysis which identified three groups. A simple lineal regression model was used to examine whether the classification based on executive functioning could more accurately predict progression to dementia a year later. Results: Clusters based on executive function deficits explained a significant proportion of the variance linked to MCI–dementia conversion, even after controlling for the severity of MCI at baseline (F(1, 68) = 116.25, p = 0.000, R2 = 0.63). Classical memory-based MCI classification failed to predict such a conversion (F(1, 68) = 5.09, p = 0.955, R2 = 0.07). Switching, categories generation, and planning were the executive functions that best distinguished between MCI converters and stable. Conclusion: MCI with a dysexecutive phenotype significantly predicts conversion to dementia in ACS a year later. Switching abilities and verbal fluency (categories) must be evaluated in MCI patients to assess risk of future dementia.
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Affiliation(s)
- Almudena Junquera
- Departamento de Psicología Experimental, Procesos Cognitivos y Logopedia, Facultad de Psicología, Universidad Complutense de Madrid, España
| | - Estefanía García-Zamora
- Departamento de Psicología Experimental, Procesos Cognitivos y Logopedia, Facultad de Psicología, Universidad Complutense de Madrid, España
| | - Javier Olazarán
- Hospital General Universitario Gregorio Marañón, Madrid, España
| | - Mario A. Parra
- School of Psychological Sciences and Health, University of Strathclyde, Glasgow, UK
- Neuroprogressive and Dementia Network, NHS Scotland, UK
- Universidad Autónoma del Caribe, Barranquilla, Colombia
| | - Sara Fernández-Guinea
- Departamento de Psicología Experimental, Procesos Cognitivos y Logopedia, Facultad de Psicología, Universidad Complutense de Madrid, España
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43
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Norton DJ, Parra MA, Sperling RA, Baena A, Guzman-Velez E, Jin DS, Andrea N, Khang J, Schultz A, Rentz DM, Pardilla-Delgado E, Fuller J, Johnson K, Reiman EM, Lopera F, Quiroz YT. Visual short-term memory relates to tau and amyloid burdens in preclinical autosomal dominant Alzheimer's disease. Alzheimers Res Ther 2020; 12:99. [PMID: 32825838 PMCID: PMC7442980 DOI: 10.1186/s13195-020-00660-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Accepted: 07/28/2020] [Indexed: 11/15/2022]
Abstract
Background Over the past decade, visual short-term memory (VSTM) binding tests have been shown to be one of the most sensitive behavioral indicators of Alzheimer’s disease (AD), especially when they require the binding of multiple features (e.g., color and shape). Recently, it has become possible to directly measure amyloid and tau levels in vivo via positron emission tomography (PET). To this point, these behavioral and neurochemical markers have not been compared in humans with AD or at risk for it. Methods In a cross-sectional study, we compared VSTM performance to tau and amyloid concentrations, measured by PET, in individuals certain to develop AD by virtue of their inheritance of the presenilin-1 E280A mutation. These included 21 clinically unimpaired subjects and 7 subjects with early mild cognitive impairment (MCI), as well as 30 family members who were not carriers of the mutation. Results We found that VSTM performance correlated strongly with tau in entorhinal cortex and inferior temporal lobe, and also with amyloid when examining asymptomatic carriers only. The condition requiring binding was not preferentially linked to tau—in fact, the non-binding “shape only” condition showed a stronger relationship. Conclusions The results confirm VSTM’s status as an early marker of AD pathology and raise interesting questions as to the course of binding-specific versus non-binding aspects of VSTM in early AD.
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Affiliation(s)
- Daniel J Norton
- Department of Psychiatry, Massachusetts General Hospital, Harvard Medical School, 149 13th Street, Rm 10.014, Boston, MA, 02129, USA.,Gordon College, Wenham, MA, USA
| | - Mario A Parra
- School of Psychological Sciences and Health, University of Strathclyde, Glasgow, UK.,Autonomous University of the Caribbean, Barranquilla, Colombia
| | - Reisa A Sperling
- Department of Psychiatry, Massachusetts General Hospital, Harvard Medical School, 149 13th Street, Rm 10.014, Boston, MA, 02129, USA.,Athinoula A. Martinos Center for Biomedical Imaging, Charlestown, MA, USA.,Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Ana Baena
- Grupo de Neurociencias, Universidad de Antioquia, Medellin, Antioquia, Colombia
| | - Edmarie Guzman-Velez
- Department of Psychiatry, Massachusetts General Hospital, Harvard Medical School, 149 13th Street, Rm 10.014, Boston, MA, 02129, USA
| | - David S Jin
- Department of Psychiatry, Massachusetts General Hospital, Harvard Medical School, 149 13th Street, Rm 10.014, Boston, MA, 02129, USA
| | - Nicholas Andrea
- Department of Psychiatry, Massachusetts General Hospital, Harvard Medical School, 149 13th Street, Rm 10.014, Boston, MA, 02129, USA
| | | | - Aaron Schultz
- Department of Psychiatry, Massachusetts General Hospital, Harvard Medical School, 149 13th Street, Rm 10.014, Boston, MA, 02129, USA.,Athinoula A. Martinos Center for Biomedical Imaging, Charlestown, MA, USA
| | - Dorene M Rentz
- Department of Psychiatry, Massachusetts General Hospital, Harvard Medical School, 149 13th Street, Rm 10.014, Boston, MA, 02129, USA
| | - Enmanuelle Pardilla-Delgado
- Department of Psychiatry, Massachusetts General Hospital, Harvard Medical School, 149 13th Street, Rm 10.014, Boston, MA, 02129, USA
| | - Joshua Fuller
- Department of Psychiatry, Massachusetts General Hospital, Harvard Medical School, 149 13th Street, Rm 10.014, Boston, MA, 02129, USA
| | - Keith Johnson
- Department of Psychiatry, Massachusetts General Hospital, Harvard Medical School, 149 13th Street, Rm 10.014, Boston, MA, 02129, USA.,Athinoula A. Martinos Center for Biomedical Imaging, Charlestown, MA, USA
| | | | - Francisco Lopera
- Grupo de Neurociencias, Universidad de Antioquia, Medellin, Antioquia, Colombia
| | - Yakeel T Quiroz
- Department of Psychiatry, Massachusetts General Hospital, Harvard Medical School, 149 13th Street, Rm 10.014, Boston, MA, 02129, USA. .,Athinoula A. Martinos Center for Biomedical Imaging, Charlestown, MA, USA. .,Grupo de Neurociencias, Universidad de Antioquia, Medellin, Antioquia, Colombia. .,Departments of Psychiatry and Neurology, Massachusetts General Hospital, Harvard Medical School, 149 13th Street, Rm 10.014, Boston, MA, 02129, USA.
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44
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Ortega R, López V, Carrasco X, Escobar MJ, García AM, Parra MA, Aboitiz F. Neurocognitive mechanisms underlying working memory encoding and retrieval in Attention-Deficit/Hyperactivity Disorder. Sci Rep 2020; 10:7771. [PMID: 32385310 PMCID: PMC7210977 DOI: 10.1038/s41598-020-64678-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Accepted: 04/14/2020] [Indexed: 11/09/2022] Open
Abstract
Working memory (WM) impairments in ADHD have been consistently reported along with deficits in attentional control. Yet, it is not clear which specific WM processes are affected in this condition. A deficient coupling between attention and WM has been reported. Nevertheless, most studies focus on the capacity to retain information rather than on the attention-dependent stages of encoding and retrieval. The current study uses a visual short-term memory binding task, measuring both behavioral and electrophysiological responses to characterize WM encoding, binding and retrieval comparing ADHD and non-ADHD matched adolescents. ADHD exhibited poorer accuracy and larger reaction times than non-ADHD on all conditions but especially when a change across encoding and test displays occurred. Binding manipulation affected equally both groups. Encoding P3 was larger in the non-ADHD group. Retrieval P3 discriminated change only in the non-ADHD group. Binding-dependent ERP modulations did not reveal group differences. Encoding and retrieval P3 were significantly correlated only in non-ADHD. These results suggest that while binding processes seem to be intact in ADHD, attention-related encoding and retrieval processes are compromised, resulting in a failure in the prioritization of relevant information. This new evidence can also inform recent theories of binding in visual WM.
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Affiliation(s)
- Rodrigo Ortega
- Departamento de Psicología, Facultad de Ciencias Sociales, Universidad de Chile, Santiago, Chile.,Center for Social and Cognitive Neuroscience (CSCN), Escuela de Psicología, Universidad Adolfo Ibáñez, Santiago, Chile
| | - Vladimir López
- Escuela de Psicología, Facultad de Ciencias Sociales, Pontificia Universidad Católica de Chile, Santiago, Chile.,Laboratorio de Neurociencias Cognitivas, Departamento de Psiquiatría, Centro Interdisciplinario de Neurociencias, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Ximena Carrasco
- Servicio de Neurología y Psiquiatría, Hospital de Niños Dr. Luis Calvo Mackenna, Facultad de Medicina, Universidad de Chile, Santiago, Chile
| | - María Josefina Escobar
- Center for Social and Cognitive Neuroscience (CSCN), Escuela de Psicología, Universidad Adolfo Ibáñez, Santiago, Chile
| | - Adolfo M García
- Universidad de San Andrés, Buenos Aires, Argentina.,National Scientific and Technical Research Council (CONICET), Buenos Aires, Argentina.,Faculty of Education, National University of Cuyo, Mendoza, Argentina.,Departamento de Lingüística y Literatura, Facultad de Humanidades, Universidad de Santiago de Chile, Santiago, Chile
| | - Mario A Parra
- School of Psychological Sciences and Health, University of Strathclyde, Glasgow, UK.,Facultad de psicología, Universidad Autónoma del Caribe, Barranquilla, Colombia
| | - Francisco Aboitiz
- Laboratorio de Neurociencias Cognitivas, Departamento de Psiquiatría, Centro Interdisciplinario de Neurociencias, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile.
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45
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Parra MA, Butler S, McGeown WJ, Brown Nicholls LA, Robertson DJ. Globalising strategies to meet global challenges: the case of ageing and dementia. J Glob Health 2020; 9:020310. [PMID: 31777656 PMCID: PMC6858988 DOI: 10.7189/jogh.09.020310] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Affiliation(s)
- Mario A Parra
- School of Psychological Sciences and Health, University of Strathclyde, Glasgow, UK.,Alzheimer's Scotland Dementia Research Centre, Edinburgh University, UK.,Autonomous University of the Caribbean, Barranquilla, Colombia
| | - Stephen Butler
- School of Psychological Sciences and Health, University of Strathclyde, Glasgow, UK.,Equal contribution, sorted alphabetically by surname
| | - William J McGeown
- School of Psychological Sciences and Health, University of Strathclyde, Glasgow, UK.,Equal contribution, sorted alphabetically by surname
| | - Louise A Brown Nicholls
- School of Psychological Sciences and Health, University of Strathclyde, Glasgow, UK.,Equal contribution, sorted alphabetically by surname
| | - David J Robertson
- School of Psychological Sciences and Health, University of Strathclyde, Glasgow, UK.,Equal contribution, sorted alphabetically by surname
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46
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Valencia S, Trujillo N, Trujillo S, Acosta A, Rodríguez M, Ugarriza JE, López JD, García AM, Parra MA. Neurocognitive reorganization of emotional processing following a socio-cognitive intervention in Colombian ex-combatants. Soc Neurosci 2020; 15:398-407. [PMID: 32107978 DOI: 10.1080/17470919.2020.1735511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Ex-combatants often exhibit atypical Emotional Processing (EP) such as reduced emphatic levels and higher aggressive attitudes. Social Cognitive Training (SCT) addressing socio-emotional components powerfully improve social interaction among Colombian ex-combatants. However, with narrow neural evidence, this study offers a new testimony. A sample of 28 ex-combatants from Colombian illegal armed groups took part in this study, split into 15 for SCT and 13 for the conventional program offered by the Governmental Reintegration Route. All of them were assessed before and after the intervention with a protocol that included an EP task synchronized with electroencephalographic recordings. We drew behavioral scores and brain connectivity (Coherency) metrics from task performance. Behavioral scores yielded no significant effects. Increased post-intervention connectivity in the delta band was observed during negative emotional processing only SCT group. Positive emotions exposed distinctive gamma band connectivity that differentiate groups. These results suggest that SCT can trigger covert neurofunctional reorganization in ex-combatants embarked on the reintegration process even when overt behavioral improvements are not yet apparent. Such covert functional changes may be the neural signature of compensatory mechanisms necessary to reshape behaviors adaptively. This novel framework may inspire cutting-edge translational research at the crossing of neuroscience, sociology, and public policy-making.
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Affiliation(s)
- S Valencia
- Grupo De Investigación En Salud Mental, Facultad Nacional De Salud Pública, Universidad De Antioquia UdeA , Medellín, Colombia.,Corporación Académica De Ciencias Básicas Biomédicas, Universidad De Antioquia UdeA , Medellín, Colombia
| | - N Trujillo
- Grupo De Investigación En Salud Mental, Facultad Nacional De Salud Pública, Universidad De Antioquia UdeA , Medellín, Colombia
| | - S Trujillo
- Doctoral Program in Psychology, Department of Experimental Psychology, University of Granada , Granada, Spain
| | - A Acosta
- Department of Experimental Psychology and Physiology of Behavior, University of Granada , Granada, Spain
| | - M Rodríguez
- SISTEMIC, Facultad De Ingeniería, Universidad De Antioquia UdeA , Medellín, Colombia
| | - J E Ugarriza
- Facultad De Jurisprudencia, Universidad Del Rosario , Bogotá, Colombia
| | - J D López
- SISTEMIC, Facultad De Ingeniería, Universidad De Antioquia UdeA , Medellín, Colombia
| | - A M García
- Laboratory of Experimental Psychology and Neuroscience (LPEN), Institute of Cognitive and Translational Neuroscience (INCYT), INECO Foundation, Favaloro University , Buenos Aires, Argentina.,National Scientific and Technical Research Council CONICET , Buenos Aires, Argentina.,Faculty of Education, National University of Cuyo UNCuyo , Mendoza, Argentina.,Departamento de Lingüística y Literatura, Universidad de Santiago de Chile , Santiago, Chile
| | - M A Parra
- School of Psychological Sciences and Health, University of Strathclyde , Glasgow, UK
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47
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Loughrey DG, Parra MA, Lawlor BA. Visual short-term memory binding deficit with age-related hearing loss in cognitively normal older adults. Sci Rep 2019; 9:12600. [PMID: 31467387 PMCID: PMC6715732 DOI: 10.1038/s41598-019-49023-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Accepted: 08/19/2019] [Indexed: 01/12/2023] Open
Abstract
Age-related hearing loss (ARHL) has been posited as a possible modifiable risk factor for neurocognitive impairment and dementia. Measures sensitive to early neurocognitive changes associated with ARHL would help to elucidate the mechanisms underpinning this relationship. We hypothesized that ARHL might be associated with decline in visual short-term memory binding (VSTMB), a potential biomarker for preclinical dementia due to Alzheimer’s disease (AD). We examined differences in accuracy between older adults with hearing loss and a control group on the VSTMB task from a single feature (shapes) condition to a feature binding (shapes-colors) condition. Hearing loss was associated with a weaker capacity to process bound features which appeared to be accounted for by a weaker sensitivity for change detection (A’). Our findings give insight into the neural mechanisms underpinning neurocognitive decline with ARHL and its temporal sequence.
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Affiliation(s)
- David G Loughrey
- Global Brain Health Institute, Trinity College Dublin, Dublin, Ireland/University of California, San Francisco, USA. .,Trinity College Institute of Neuroscience, Trinity College Dublin, Dublin, Ireland.
| | - Mario A Parra
- School of Psychological Sciences and Health, University of Strathclyde, Glasgow, UK.,Programa de Psicología, Universidad Autónoma del Caribe, Barranquilla, Colombia
| | - Brian A Lawlor
- Global Brain Health Institute, Trinity College Dublin, Dublin, Ireland/University of California, San Francisco, USA.,Trinity College Institute of Neuroscience, Trinity College Dublin, Dublin, Ireland.,School of Medicine, Trinity College Dublin, Dublin, Ireland.,Mercer's Institute for Successful Ageing, St James Hospital, Dublin, Ireland
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48
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Parra MA, Calia C, García AF, Olazarán-Rodríguez J, Hernandez-Tamames JA, Alvarez-Linera J, Della Sala S, Fernandez Guinea S. Refining memory assessment of elderly people with cognitive impairment: Insights from the short-term memory binding test. Arch Gerontol Geriatr 2019; 83:114-120. [DOI: 10.1016/j.archger.2019.03.025] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2018] [Revised: 03/24/2019] [Accepted: 03/26/2019] [Indexed: 12/17/2022]
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49
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Abstract
BACKGROUND Virtual reality applications to assist older adult with cognitive and functional decline are fast growing. However, such technological developments face limitations such as due to limited constructs and ecological validity. This study was aimed at investigating age-related changes in functional abilities and their associated cognitive underpinnings during task performance in virtual and real environments. METHOD Twenty-two younger adults (university students) and 22 older adults (aged 58-74) performed a multiple errands task twice, once in the "Discoveries" section of the National Museum of Scotland and once in the same room as a virtual environment. Accuracy and distance traveled were measured in both groups. Cognitive and daily living abilities were recorded in older adults using standard and novel questionnaires. RESULTS The testing environment had a significant effect on how efficient individuals performed the task. Older and younger adults' performance was alike but older adults relied on more cognitive resources. Older adults struggled in the virtual but not in the real environment. Younger but not older adults could transfer knowledge between environments. CONCLUSION The use of technology to assist frail older adults and those affected by dementia is growing rapidly. For these novel tools to be theoretically valid, they need to incorporate knowledge of the challenges they pose to these vulnerable groups. Here we present evidence of such challenges and their cognitive underpinnings. This theory may be considered by future applications aimed at enhancing functional abilities in these populations.
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Affiliation(s)
- Mario A Parra
- a School of Social Sciences, Psychology , University Heriot-Watt , Edinburgh , UK.,b Human Cognitive Neuroscience , Edinburgh University , Edinburgh , UK.,c Alzheimer's Scotland Dementia Research Centre, University of Edinburgh , Edinburgh , UK.,d Neuroprogressive and Dementia Network , NHS Scotland , UK.,e Universidad Autónoma del Caribe, Programa de Psicología, Barranquilla , Colombia
| | - Rini I Kaplan
- b Human Cognitive Neuroscience , Edinburgh University , Edinburgh , UK
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50
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Babulal GM, Quiroz YT, Albensi BC, Arenaza-Urquijo E, Astell AJ, Babiloni C, Bahar-Fuchs A, Bell J, Bowman GL, Brickman AM, Chételat G, Ciro C, Cohen AD, Dilworth-Anderson P, Dodge HH, Dreux S, Edland S, Esbensen A, Evered L, Ewers M, Fargo KN, Fortea J, Gonzalez H, Gustafson DR, Head E, Hendrix JA, Hofer SM, Johnson LA, Jutten R, Kilborn K, Lanctôt KL, Manly JJ, Martins RN, Mielke MM, Morris MC, Murray ME, Oh ES, Parra MA, Rissman RA, Roe CM, Santos OA, Scarmeas N, Schneider LS, Schupf N, Sikkes S, Snyder HM, Sohrabi HR, Stern Y, Strydom A, Tang Y, Terrera GM, Teunissen C, Melo van Lent D, Weinborn M, Wesselman L, Wilcock DM, Zetterberg H, O'Bryant SE. Perspectives on ethnic and racial disparities in Alzheimer's disease and related dementias: Update and areas of immediate need. Alzheimers Dement 2019; 15:292-312. [PMID: 30555031 PMCID: PMC6368893 DOI: 10.1016/j.jalz.2018.09.009] [Citation(s) in RCA: 291] [Impact Index Per Article: 58.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Revised: 07/12/2018] [Accepted: 09/13/2018] [Indexed: 02/07/2023]
Abstract
Alzheimer's disease and related dementias (ADRDs) are a global crisis facing the aging population and society as a whole. With the numbers of people with ADRDs predicted to rise dramatically across the world, the scientific community can no longer neglect the need for research focusing on ADRDs among underrepresented ethnoracial diverse groups. The Alzheimer's Association International Society to Advance Alzheimer's Research and Treatment (ISTAART; alz.org/ISTAART) comprises a number of professional interest areas (PIAs), each focusing on a major scientific area associated with ADRDs. We leverage the expertise of the existing international cadre of ISTAART scientists and experts to synthesize a cross-PIA white paper that provides both a concise "state-of-the-science" report of ethnoracial factors across PIA foci and updated recommendations to address immediate needs to advance ADRD science across ethnoracial populations.
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Affiliation(s)
- Ganesh M Babulal
- Department of Neurology and Knight Alzheimer's Disease Research Center, Washington University School of Medicine, St. Louis, MO, USA
| | - Yakeel T Quiroz
- Department of Psychiatry, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA; Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Benedict C Albensi
- Division of Neurodegenerative Disorders, St. Boniface Hospital Albrechtsen Research Centre, Winnipeg, Manitoba, Canada; Department of Pharmacology & Therapeutics, University of Manitoba, Winnipeg, Manitoba, Canada
| | | | - Arlene J Astell
- Department of Occupational Sciences & Occupational Therapy, University of Toronto, CA; School of Psychology and Clinical Language Sciences, University of Reading, UK
| | - Claudio Babiloni
- Department of Physiology and Pharmacology "V. Erspamer", Sapienza University of Rome, Rome, Italy; Department of Neuroscience, IRCCS-Hospital San Raffaele Pisana of Rome and Cassino, Rome and Cassino, Italy
| | - Alex Bahar-Fuchs
- Academic Unit for Psychiatry of Old Age, Department of Psychiatry, the University of Melbourne, Australia
| | | | - Gene L Bowman
- Nutrition and Brain Health Laboratory, Nestlé Institute of Health Sciences, Lausanne, Switzerland; Department of Neurology, Layton Aging & Alzheimer's Disease Center, Oregon Health & Science University, Portland, OR, USA
| | - Adam M Brickman
- Taub Institute for Research in Alzheimer's Disease and the Aging Brain, The Gertrude H. Sergievsky Center, Department of Neurology, Columbia University, New York, NY, USA
| | - Gaël Chételat
- Inserm, Inserm UMR-S U1237, Université de Caen-Normandie, GIP Cyceron, Caen, France
| | - Carrie Ciro
- Department of Occupational Therapy Education, University of Kansas Medical Center, Kansas City, KS, USA
| | - Ann D Cohen
- Department of Psychiatry, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | | | - Hiroko H Dodge
- Department of Neurology, Layton Aging and Alzheimer's Disease Center, Oregon Health & Science University, Portland, OR, USA
| | - Simone Dreux
- Undergraduate Program of History and Science, Harvard College, Cambridge, MA, USA
| | - Steven Edland
- Department of Family Medicine and Public Health, University of California, San Diego, CA, USA
| | - Anna Esbensen
- Department of Pediatrics, University of Cincinnati College of Medicine & Division of Developmental and Behavioral Pediatrics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Lisbeth Evered
- Melbourne Medical School, University of Melbourne, Australia
| | - Michael Ewers
- Institute for Stroke and Dementia Research, Klinikum der Universität München, Munich, Germany
| | - Keith N Fargo
- Medical & Scientific Relations, Alzheimer's Association, Chicago, IL, USA
| | - Juan Fortea
- Memory Unit, Department of Neurology, Hospital de la Santa Creu i Sant Pau, Biomedical Research Institute Sant Pau, Universitat Autònoma de Barcelona, Barcelona, Spain; Barcelona Down Medical Center, Fundació Catalana de Síndrome de Down, Barcelona, Spain
| | - Hector Gonzalez
- Department of Neurosciences and Shiley-Marcos Alzheimer's Disease Research Center, University of San Diego, CA, USA
| | - Deborah R Gustafson
- Department of Neurology, Section for NeuroEpidemiology, State University of New York - Downstate Medical Center, Brooklyn, NY, USA
| | - Elizabeth Head
- Sanders Brown Center on Aging, University of Kentucky, Lexington, KY, USA
| | - James A Hendrix
- Medical & Scientific Relations, Alzheimer's Association, Chicago, IL, USA
| | - Scott M Hofer
- Adult Development and Aging, University of Victoria, British Columbia, CA, USA
| | - Leigh A Johnson
- Department of Pharmacology & Neuroscience, University of North Texas Health Science Center, Fort Worth, TX, USA
| | - Roos Jutten
- VU University Medical Center, Department of Neurology, Amsterdam Neuroscience, Amsterdam, the Netherlands
| | - Kerry Kilborn
- Department of Psychology, University of Glasgow, Glasgow, Scotland, UK
| | - Krista L Lanctôt
- Sunnybrook Research Institute of Psychiatry and Pharmacology, University of Toronto, Toronto, ON, Canada
| | - Jennifer J Manly
- Taub Institute for Research in Alzheimer's Disease and the Aging Brain, The Gertrude H. Sergievsky Center, Department of Neurology, Columbia University, New York, NY, USA
| | - Ralph N Martins
- Aging and Alzheimer's Disease, School of Medical and Health Sciences, Edith Cowan University, Joondalup, Australia
| | - Michelle M Mielke
- Department of Epidemiology, Mayo Clinic, Rochester, MN, USA; Department of Neurology, Mayo Clinic, Rochester, MN, USA
| | | | | | - Esther S Oh
- Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Mario A Parra
- School of Social Sciences, Department of Psychology, Heriot-Watt University, UK; Universidad Autónoma del Caribe, Barranquilla, Colombia; Neuroprogressive and Dementia Network, UK
| | - Robert A Rissman
- Department of Neurosciences, University of California San Diego School of Medicine, CA, USA
| | - Catherine M Roe
- Department of Neurology and Knight Alzheimer's Disease Research Center, Washington University School of Medicine, St. Louis, MO, USA
| | - Octavio A Santos
- Department of Psychiatry and Psychology, Mayo Clinic, Jacksonville, FL, USA
| | - Nikolaos Scarmeas
- Taub Institute for Research in Alzheimer's Disease and the Aging Brain, The Gertrude H. Sergievsky Center, Department of Neurology, Columbia University, New York, NY, USA; Aiginition Hospital, 1st Neurology Clinic, Department of Social Medicine, Psychiatry and Neurology, National and Kapodistrian University of Athens, Athens, Greece
| | - Lon S Schneider
- Department of Psychiatry and The Behavioral Sciences, University of Southern California, CA, USA
| | - Nicole Schupf
- Department of Epidemiology, Mailman School of Public Health Columbia University, New York, NY, USA
| | - Sietske Sikkes
- Massachusetts General Hospital, Department of Neurology, Boston, MA, USA
| | - Heather M Snyder
- Medical & Scientific Relations, Alzheimer's Association, Chicago, IL, USA
| | - Hamid R Sohrabi
- Aging and Alzheimer's Disease, School of Medical and Health Sciences, Edith Cowan University, Joondalup, Australia
| | - Yaakov Stern
- Department of Neurology, Columbia University, New York, NY, USA; Department of Psychiatry, Columbia University, New York, NY, USA
| | - Andre Strydom
- Department of Forensic and Neurodevelopmental Science, Institute of Psychiatry Psychology and Neuroscience, King's College London, London, UK
| | - Yi Tang
- Department of Neurology, Xuan Wu Hospital, Capital Medical University, Beijing, China
| | - Graciela Muniz Terrera
- Centers for Clinical Brain Sciences and Dementia Prevention, University in Edinburgh, Scotland, UK
| | - Charlotte Teunissen
- Neurochemistry Laboratory and Biobank, Department of Clinical Chemistry, Amsterdam Neuroscience, Vrije Universiteit University Medical Center, Amsterdam, the Netherlands
| | - Debora Melo van Lent
- Department of Clinical Research, German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
| | - Michael Weinborn
- Aging and Alzheimer's Disease, School of Medical and Health Sciences, Edith Cowan University, Joondalup, Australia
| | | | - Donna M Wilcock
- Neurochemistry Laboratory and Biobank, Department of Clinical Chemistry, Amsterdam Neuroscience, Vrije Universiteit University Medical Center, Amsterdam, the Netherlands
| | - Henrik Zetterberg
- UK Dementia Research Institute at UCL, London, UK; Department of Molecular Neuroscience, UCL Institute of Neurology, Queen Square, London, UK; Clinical Neurochemistry Laboratory, Sahlgrenska University Hospital, Mölndal, Sweden; Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, the Sahlgrenska Academy at the University of Gothenburg, Mölndal, Sweden
| | - Sid E O'Bryant
- Department of Pharmacology & Neuroscience, University of North Texas Health Science Center, Fort Worth, TX, USA.
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