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Jiménez‐Huete A, Villino‐Rodríguez R, Ríos‐Rivera MM, Rognoni T, Montoya‐Murillo G, Arrondo C, Zapata C, Rodríguez‐Oroz MC, Riverol M. Clusters of cognitive performance predict long-term cognitive impairment in elderly patients with subjective memory complaints and healthy controls. Alzheimers Dement 2024; 20:4702-4716. [PMID: 38779851 PMCID: PMC11247668 DOI: 10.1002/alz.13903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Accepted: 04/24/2024] [Indexed: 05/25/2024]
Abstract
INTRODUCTION Patients with subjective memory complaints (SMC) may include subgroups with different neuropsychological profiles and risks of cognitive impairment. METHODS Cluster analysis was performed on two datasets (n: 630 and 734) comprising demographic and neuropsychological data from SMC and healthy controls (HC). Survival analyses were conducted on clusters. Bayesian model averaging assessed the predictive utility of clusters and other biomarkers. RESULTS Two clusters with higher and lower than average cognitive performance were detected in SMC and HC. Assignment to the lower performance cluster increased the risk of cognitive impairment in both datasets (hazard ratios: 1.78 and 2.96; Plog-rank: 0.04 and <0.001) and was associated with lower hippocampal volumes and higher tau/amyloid beta 42 ratios in cerebrospinal fluid. The effect of SMC was small and confounded by mood. DISCUSSION This study provides evidence of the presence of cognitive clusters that hold biological significance and predictive value for cognitive decline in SMC and HC. HIGHLIGHTS Patients with subjective memory complaints include two cognitive clusters. Assignment to the lower performance cluster increases risk of cognitive impairment. This cluster shows a pattern of biomarkers consistent with incipient Alzheimer's disease pathology. The same cognitive cluster structure is found in healthy controls. The effect of memory complaints on risk of cognitive decline is small and confounded.
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Grants
- Biogen
- Alzheimer's Drug Discovery Foundation
- GE Healthcare
- AbbVie
- Transition Therapeutics
- Cogstate
- NIBIB NIH HHS
- Eli Lilly and Company
- Eisai Inc.
- W81XWH-12-2-0012 Department of Defense
- CIHR
- Alzheimer's Disease Neuroimaging Initiative
- Bristol-Myers Squibb Company
- U01 AG024904 NIA NIH HHS
- Piramal Imaging
- Takeda Pharmaceutical Company
- Johnson & Johnson Pharmaceutical Research & Development LLC; Lumosity
- Genentech, Inc.
- Araclon Biotech
- U01 AG024904 NIH HHS
- Meso Scale Diagnostics, LLC
- Novartis Pharmaceuticals Corporation
- CereSpir, Inc.
- BioClinica, Inc.
- Pfizer Inc.
- Elan Pharmaceuticals, Inc.
- IXICO Ltd.
- EuroImmun; F. Hoffmann-La Roche Ltd
- NeuroRx Research
- Merck & Co., Inc.
- Janssen Alzheimer Immunotherapy Research & Development, LLC
- Fujirebio
- Neurotrack Technologies
- U01 AG024904 NIH HHS
- NIA NIH HHS
- NIBIB NIH HHS
- Alzheimer's Association
- CIHR
- Alzheimer's Disease Neuroimaging Initiative
- National Institutes of Health
- Department of Defense
- National Institute on Aging
- National Institute of Biomedical Imaging and Bioengineering
- AbbVie
- Alzheimer's Association
- Alzheimer's Drug Discovery Foundation
- BioClinica, Inc.
- Biogen
- Bristol‐Myers Squibb Company
- Eli Lilly and Company
- Genentech, Inc.
- Fujirebio
- GE Healthcare
- Merck & Co., Inc.
- Novartis Pharmaceuticals Corporation
- Pfizer Inc.
- Takeda Pharmaceutical Company
- Canadian Institutes of Health Research
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Affiliation(s)
| | | | | | - Teresa Rognoni
- Department of NeurologyClínica Universidad de NavarraMadridSpain
| | | | - Carlota Arrondo
- Department of NeurologyClínica Universidad de NavarraMadridSpain
| | - Carolina Zapata
- Department of NeurologyClínica Universidad de NavarraMadridSpain
- Departament of Psychiatry and Forensic MedicineUniversitat Autònoma de BarcelonaFacultad de Medicina, Avinguda de Can DomènechBarcelonaSpain
| | | | - Mario Riverol
- Department of NeurologyClínica Universidad de NavarraMadridSpain
- Instituto de Investigación Sanitaria de Navarra (IdiSNA)Recinto del Hospital Universitario de NavarraPamplonaSpain
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Chang KH, Wang C, Nester CO, Katz MJ, Byrd DA, Lipton RB, Rabin LA. Examining the role of participant and study partner report in widely-used classification approaches of mild cognitive impairment in demographically-diverse community dwelling individuals: results from the Einstein aging study. Front Aging Neurosci 2023; 15:1221768. [PMID: 38076542 PMCID: PMC10702963 DOI: 10.3389/fnagi.2023.1221768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Accepted: 09/29/2023] [Indexed: 01/28/2024] Open
Abstract
Objective The role of subjective cognitive concerns (SCC) as a diagnostic criterion for MCI remains uncertain and limits the development of a universally (or widely)-accepted MCI definition. The optimal MCI definition should define an at-risk state and accurately predict the development of incident dementia. Questions remain about operationalization of definitions of self- and informant-reported SCCs and their individual and joint associations with incident dementia. Methods The present study included Einstein Aging Study participants who were non-Hispanic White or Black, free of dementia at enrollment, had follow-up, and completed neuropsychological tests and self-reported SCC at enrollment to determine MCI status. Informant-reported SCC at baseline were assessed via the CERAD clinical history questionnaire. Self-reported SCC were measured using the CERAD, items from the EAS Health Self-Assessment, and the single memory item from the Geriatric Depression Scale. Cox proportional hazards models examined the association of different operationalizations of SCC with Petersen and Jak/Bondi MCI definitions on the risk of dementia, further controlling for age, sex, education, and race/ethnicity. Time-dependent sensitivity and specificity at specific time points for each definition, and Youden's index were calculated as an accuracy measure. Cox proportional hazards models were also used to evaluate the associations of combinations of self- and informant-reported SCC with the risk of incident dementia. Results 91% of the sample endorsed at least one SCC. Youden's index showed that not including SCC in either Jak/Bondi or Petersen classifications had the best balance between sensitivity and specificity across follow-up. A subset of individuals with informants, on average, had a lower proportion of non-Hispanic Blacks and 94% endorsed at least one self-reported SCC. Both informant-reported and self-reported SCC were significantly associated with incident dementia. Conclusion Our findings suggest that the SCC criterion may not improve the predictive validity for dementia when included in widely-employed definitions of MCI. Consistent with some prior research, informant-reported SCC was more related to risk of incident dementia than self-reported SCC. Given that requiring informant report as a diagnostic criterion may unintentionally exclude health disparate groups, additional consideration is needed to determine how best to utilize informant-report in MCI diagnosis.
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Affiliation(s)
- Katherine H. Chang
- Department of Psychology, Queens College, City University of New York (CUNY), Queens, NY, United States
- Department of Psychology, The Graduate Center, City University of New York (CUNY), New York, NY, United States
| | - Cuiling Wang
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, NY, United States
- Saul R. Korey Department of Neurology, Albert Einstein College of Medicine, Bronx, NY, United States
| | - Caroline O. Nester
- Department of Psychology, Queens College, City University of New York (CUNY), Queens, NY, United States
- Department of Psychology, The Graduate Center, City University of New York (CUNY), New York, NY, United States
| | - Mindy J. Katz
- Saul R. Korey Department of Neurology, Albert Einstein College of Medicine, Bronx, NY, United States
| | - Desiree A. Byrd
- Department of Psychology, Queens College, City University of New York (CUNY), Queens, NY, United States
- Department of Psychology, The Graduate Center, City University of New York (CUNY), New York, NY, United States
| | - Richard B. Lipton
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, NY, United States
- Saul R. Korey Department of Neurology, Albert Einstein College of Medicine, Bronx, NY, United States
- Department of Psychiatry and Behavioral Medicine, Albert Einstein College of Medicine, Bronx, NY, United States
| | - Laura A. Rabin
- Department of Psychology, Queens College, City University of New York (CUNY), Queens, NY, United States
- Department of Psychology, The Graduate Center, City University of New York (CUNY), New York, NY, United States
- Saul R. Korey Department of Neurology, Albert Einstein College of Medicine, Bronx, NY, United States
- Department of Psychology, Brooklyn College, City University of New York (CUNY), Brooklyn, NY, United States
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Tang Y, Cao M, Li Y, Lin Y, Wu X, Chen M. Altered structural covariance of locus coeruleus in individuals with significant memory concern and patients with mild cognitive impairment. Cereb Cortex 2023; 33:8523-8533. [PMID: 37130822 PMCID: PMC10321106 DOI: 10.1093/cercor/bhad137] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2022] [Revised: 03/31/2023] [Accepted: 04/02/2023] [Indexed: 05/04/2023] Open
Abstract
The locus coeruleus (LC) is the site where tau accumulation is preferentially observed pathologically in Alzheimer's disease (AD) patients, but the changes in gray matter co-alteration patterns between the LC and the whole brain in the predementia phase of AD remain unclear. In this study, we estimated and compared the gray matter volume of the LC and its structural covariance (SC) with the whole brain among 161 normal healthy controls (HCs), 99 individuals with significant memory concern (SMC) and 131 patients with mild cognitive impairment (MCI). We found that SC decreased in MCI groups, which mainly involved the salience network and default mode network. These results imply that seeding from LC, the gray matter network disruption and disconnection appears early in the MCI group. The altered SC network seeding from the LC can serve as an imaging biomarker for discriminating the patients in the potential predementia phase of AD from the normal subjects.
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Affiliation(s)
- Yingmei Tang
- Department of Radiology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, No.107 Yanjiang Road West, Guangzhou 510120, Guangdong, China
| | - Minghui Cao
- Department of Radiology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, No.107 Yanjiang Road West, Guangzhou 510120, Guangdong, China
| | - Yunhua Li
- Department of Radiology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, No.107 Yanjiang Road West, Guangzhou 510120, Guangdong, China
| | - Yuting Lin
- School of Psychology, Key Laboratory of Brain, Cognition and Education Sciences (South China Normal University), Ministry of Education, Center for Studies of Psychological Application, and Guangdong Key Laboratory of Mental Health and Cognitive Science, South China Normal University, No.55 Zhongshan Avenue West, Guangzhou 510631, Guangdong, China
| | - Xiaoyan Wu
- School of Psychology, Key Laboratory of Brain, Cognition and Education Sciences (South China Normal University), Ministry of Education, Center for Studies of Psychological Application, and Guangdong Key Laboratory of Mental Health and Cognitive Science, South China Normal University, No.55 Zhongshan Avenue West, Guangzhou 510631, Guangdong, China
| | - Meiwei Chen
- Department of Radiology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, No.107 Yanjiang Road West, Guangzhou 510120, Guangdong, China
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Nosheny RL, Amariglio R, Sikkes SA, Van Hulle C, Bicalho MAC, Dowling NM, Brucki SMD, Ismail Z, Kasuga K, Kuhn E, Numbers K, Aaronson A, Moretti DV, Pereiro AX, Sánchez‐Benavides G, Sellek Rodríguez AF, Urwyler P, Zawaly K. The role of dyadic cognitive report and subjective cognitive decline in early ADRD clinical research and trials: Current knowledge, gaps, and recommendations. ALZHEIMER'S & DEMENTIA (NEW YORK, N. Y.) 2022; 8:e12357. [PMID: 36226046 PMCID: PMC9530696 DOI: 10.1002/trc2.12357] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 08/05/2022] [Accepted: 08/22/2022] [Indexed: 11/05/2022]
Abstract
Efficient identification of cognitive decline and Alzheimer's disease (AD) risk in early stages of the AD disease continuum is a critical unmet need. Subjective cognitive decline is increasingly recognized as an early symptomatic stage of AD. Dyadic cognitive report, including subjective cognitive complaints (SCC) from a participant and an informant/study partner who knows the participant well, represents an accurate, reliable, and efficient source of data for assessing risk. However, the separate and combined contributions of self- and study partner report, and the dynamic relationship between the two, remains unclear. The Subjective Cognitive Decline Professional Interest Area within the Alzheimer's Association International Society to Advance Alzheimer's Research and Treatment convened a working group focused on dyadic patterns of subjective report. Group members identified aspects of dyadic-report information important to the AD research field, gaps in knowledge, and recommendations. By reviewing existing data on this topic, we found evidence that dyadic measures are associated with objective measures of cognition and provide unique information in preclinical and prodromal AD about disease stage and progression and AD biomarker status. External factors including dyad (participant-study partner pair) relationship and sociocultural factors contribute to these associations. We recommend greater dyad report use in research settings to identify AD risk. Priority areas for future research include (1) elucidation of the contributions of demographic and sociocultural factors, dyad type, and dyad relationship to dyad report; (2) exploration of agreement and discordance between self- and study partner report across the AD syndromic and disease continuum; (3) identification of domains (e.g., memory, executive function, neuropsychiatric) that predict AD risk outcomes and differentiate cognitive impairment due to AD from other impairment; (4) development of best practices for study partner engagement; (5) exploration of study partner report as AD clinical trial endpoints; (6) continued development, validation, and optimization, of study partner report instruments tailored to the goals of the research and population.
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Affiliation(s)
- Rachel L. Nosheny
- University of California San FranciscoDepartment of PsychiatrySan FranciscoCaliforniaUSA
- Veteran's Administration Advanced Research CenterSan FranciscoCaliforniaUSA
| | - Rebecca Amariglio
- Center for Alzheimer Research and TreatmentDepartment of NeurologyBrigham and Women's HospitalDepartment of Neurology Massachusetts General HospitalHarvard Medical SchoolBostonMassachusettsUSA
| | - Sietske A.M. Sikkes
- Amsterdam University Medical CentersDepartment of NeurologyAlzheimer Center AmsterdamNorth Hollandthe Netherlands/VU UniversityDepartment of ClinicalNeuro & Development PsychologyNorth Hollandthe Netherlands
| | - Carol Van Hulle
- Wisconsin Alzheimer's Disease Research CenterUniversity of Wisconsin‐MadisonMadisonWisconsinUSA
| | - Maria Aparecida Camargos Bicalho
- UFMG: Federal University of Minas GeraisDepartment of Clinical MedicineJenny de Andrade Faria – Center for Geriatrics and Gerontology of UFMGBelo HorizonteBrazil
| | - N. Maritza Dowling
- George Washington UniversityDepartment of Acute & Chronic CareSchool of NursingDepartment of Epidemiology & BiostatisticsMilken Institute School of Public HealthWashingtonDistrict of ColumbiaUSA
| | | | - Zahinoor Ismail
- Hotchkiss Brain Institute and O'Brien Institute for Public HealthCumming School of MedicineUniversity of CalgaryCalgaryAlbertaCanada
| | - Kensaku Kasuga
- Department of Molecular GeneticsBrain Research InstituteNiigata UniversityNiigataJapan
| | - Elizabeth Kuhn
- UNICAEN, INSERM, PhIND “Physiopathology and Imaging of Neurological Disorders,”Institut Blood and Brain @ Caen‐NormandieNormandie UniversityCaenFrance
| | - Katya Numbers
- Centre for Healthy Brain Ageing (CHeBA)Department of PsychiatryUniversity of New South WalesSydneyNew South WalesAustralia
| | - Anna Aaronson
- Veteran's Administration Advanced Research CenterSan FranciscoCaliforniaUSA
| | - Davide Vito Moretti
- IRCCS Istituto Centro San Giovanni di Dio FatebenefratelliAlzheimer Rehabilitation Operative UnitBresciaItaly
| | - Arturo X. Pereiro
- Faculty of PsychologyDepartment of Developmental PsychologyUniversity of Santiago de CompostelaGaliciaSpain
| | | | - Allis F. Sellek Rodríguez
- Costa Rican Foundation for the Care of Older Adults with Alzheimer's and Other Dementias (FundAlzheimer Costa Rica)CartagoCosta Rica
| | - Prabitha Urwyler
- ARTORG Center for Biomedical EngineeringUniversity of BernUniversity Neurorehabilitation UnitDepartment of NeurologyInselspitalBernSwitzerland
| | - Kristina Zawaly
- University of AucklandDepartment of General Practice and Primary Health CareSchool of Population HealthFaculty of Medical and Health SciencesAucklandNew Zealand
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Perez V, Garrido-Chaves R, Zapater-Fajarí M, Pulopulos MM, Hidalgo V, Salvador A. EEG markers and subjective memory complaints in young and older people. Int J Psychophysiol 2022; 182:23-31. [PMID: 36150529 DOI: 10.1016/j.ijpsycho.2022.09.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Revised: 09/11/2022] [Accepted: 09/19/2022] [Indexed: 11/26/2022]
Abstract
Subjective memory complaints (SMCs) have been related to subtle cognitive deficits and neural changes. In this study, we investigated whether EEG rhythms, usually altered in mild cognitive impairment and Alzheimer's disease, are also affected in SMCs compared to people without SMCs. Seventy-one older adults (55-74 years old) and 75 young people (18-34 years old) underwent 3 min of EEG recording in a resting-state condition with their eyes open (EO) and eyes closed (EC) and a comprehensive neuropsychological evaluation. The EEG measures included were power spectral delta (0.5-4 Hz), theta (4-8 Hz), alpha (8-12 Hz), beta (13-30 Hz), and EEG reactivity to EO. Compared to controls, older people with SMCs showed increased theta power and a loss of alpha reactivity to EO. Additionally, in older participants with SMCs, the theta power spectral was related to deficits in verbal memory. In contrast, we failed to find differences in the young people with SMCs, compared to the control group, in the power spectral or the EEG reactivity to EO. Our findings suggest that neurophysiological markers of brain dysfunction may identify cognitive changes even before they are observed on objective neuropsychological tests, at least in older people.
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Affiliation(s)
- Vanesa Perez
- Laboratory of Social Cognitive Neuroscience, IDOCAL, Department of Psychobiology, University of Valencia, Valencia, Spain; Valencian International University, Valencia, Spain
| | - Ruth Garrido-Chaves
- Laboratory of Social Cognitive Neuroscience, IDOCAL, Department of Psychobiology, University of Valencia, Valencia, Spain
| | - Mariola Zapater-Fajarí
- Laboratory of Social Cognitive Neuroscience, IDOCAL, Department of Psychobiology, University of Valencia, Valencia, Spain
| | - Matias M Pulopulos
- Department of Experimental Clinical and Health Psychology, Ghent University, Ghent, Belgium
| | - Vanesa Hidalgo
- Laboratory of Social Cognitive Neuroscience, IDOCAL, Department of Psychobiology, University of Valencia, Valencia, Spain; Department of Psychology and Sociology, Area of Psychobiology, University of Zaragoza, IIS Aragón, Teruel, Spain.
| | - Alicia Salvador
- Laboratory of Social Cognitive Neuroscience, IDOCAL, Department of Psychobiology, University of Valencia, Valencia, Spain; Spanish National Network for Research in Mental Health CIBERSAM, 28029, Spain
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Dzierzewski JM. Insomnia and subjective cognitive decline in older adults: avenues for continued investigation and potential intervention. Sleep 2022; 45:6696320. [DOI: 10.1093/sleep/zsac216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Joseph M Dzierzewski
- National Sleep Foundation , Washington, DC , USA
- Department of Psychology, Virginia Commonwealth University , Richmond, VA , USA
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Song L, Chen J, Lo CYZ, Guo Q, Feng J, Zhao XM. Impaired type I interferon signaling activity implicated in the peripheral blood transcriptome of preclinical Alzheimer's disease. EBioMedicine 2022; 82:104175. [PMID: 35863293 PMCID: PMC9304603 DOI: 10.1016/j.ebiom.2022.104175] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2022] [Revised: 07/04/2022] [Accepted: 07/04/2022] [Indexed: 11/16/2022] Open
Abstract
Background Subjective or objective subtle cognitive decline (SCD) is considered the preclinical manifestation of Alzheimer's disease (AD), which is a potentially crucial window for preventing or delaying the progression of the disease. Methods To explore the potential mechanism of disease progression and identify relevant biomarkers, we comprehensively assessed the peripheral blood transcriptomic alterations in SCD, covering lncRNA, mRNA, and miRNA. Findings Dysregulated protein-coding mRNA at both gene and isoform levels implicated impairment in the type I interferon signaling pathway in SCD. Specifically, this pathway was regulated by the transcription factor STAT1 and ncRNAs NRIR and has-miR-146a-5p. The miRNA-mRNA-lncRNA co-expression network revealed hub genes for the interferon module. Individuals with lower interferon signaling activity and lower expression of a hub gene STAT1 exhibited a higher conversion rate to mild cognitive impairment (MCI). Interpretation Our findings illustrated the down-regulation of interferon signaling activity would potentially increase the risk of disease progression and thus serve as a pre-disease biomarker. Funding This work was partly supported by National Key R&D Program of China (2020YFA0712403), National Natural Science Foundation of China (61932008), Shanghai Municipal Science and Technology Major Project (2018SHZDZX01), the 111 Project (No. B18015) of China, Greater Bay Area Institute of Precision Medicine (Guangzhou) (Grand No. IPM21C008), Natural Science Foundation of Shanghai (21ZR1403200), and Shanghai Center for Brain Science and Brain-Inspired Technology.
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Robertson FE, Jacova C. A systematic review of subjective cognitive characteristics predictive of longitudinal outcomes in older adults. THE GERONTOLOGIST 2022; 63:700-716. [PMID: 35908232 DOI: 10.1093/geront/gnac109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND AND OBJECTIVES Subjective cognitive decline (SCD) is a common experience of self-perceived decline without objective cognitive impairment among older adults. SCD has been conceptualized as very early Alzheimer's disease (AD), but the specific SCD features predictive of clinical or cognitive decline remain unclear. This systematic review is the first to characterize specific SCD features and their relation to longitudinal outcomes. RESEARCH DESIGN AND METHODS Multiple electronic databases were searched from inception until August 2021 for longitudinal studies of adults aged >50 (mean>60) and free of dementia, with baseline SCD measurement and clinical or cognitive follow-up. Studies were screened for inclusion criteria and assessed for risk of bias using weight-of-evidence ratings. RESULTS 570 potentially relevant studies were identified, and 52 studies evaluated for eligibility after initial screening. Thirty-three studies with medium to high weight-of-evidence ratings were included and results narratively synthesized. Measurement methods varied substantially across studies: the majority (n=27) assessed SCD symptom types and intensity, and consistently reported that higher symptom burden increased the risk for MCI and dementia. The evidence was less compelling for cognitive outcomes. A handful of studies (n=5) suggested a predictive role for SCD symptom consistency and informant corroboration. DISCUSSION AND IMPLICATIONS SCD symptom intensity emerged from our review as the most reliable predictor of future clinical outcomes. Combinations of SCD-Plus symptoms also had predictive utility. No single symptom was uniquely prognostic. Our findings support the quantitative evaluation of SCD symptoms in the assessment of risk for progression to MCI or dementia.
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Affiliation(s)
| | - Claudia Jacova
- School of Graduate Psychology, Pacific University, Hillsboro, Oregon, USA
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Bao YW, Shea YF, Chiu PKC, Kwan JSK, Chan FHW, Chow WS, Chan KH, Mak HKF. The fractional amplitude of low-frequency fluctuations signals related to amyloid uptake in high-risk populations—A pilot fMRI study. Front Aging Neurosci 2022; 14:956222. [PMID: 35966783 PMCID: PMC9372772 DOI: 10.3389/fnagi.2022.956222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Accepted: 07/04/2022] [Indexed: 11/13/2022] Open
Abstract
BackgroundPatients with type 2 diabetes mellitus (T2DM) and subjective cognitive decline (SCD) have a higher risk to develop Alzheimer's Disease (AD). Resting-state-functional magnetic resonance imaging (rs-fMRI) was used to document neurological involvement in the two groups from the aspect of brain dysfunction. Accumulation of amyloid-β (Aβ) starts decades ago before the onset of clinical symptoms and may already have been associated with brain function in high-risk populations. However, this study aims to compare the patterns of fractional amplitude of low-frequency fluctuations (fALFF) maps between cognitively normal high-risk groups (SCD and T2DM) and healthy elderly and evaluate the association between regional amyloid deposition and local fALFF signals in certain cortical regions.Materials and methodsA total of 18 T2DM, 11 SCD, and 18 healthy elderlies were included in this study. The differences in the fALFF maps were compared between HC and high-risk groups. Regional amyloid deposition and local fALFF signals were obtained and further correlated in two high-risk groups.ResultsCompared to HC, the altered fALFF signals of regions were shown in SCD such as the left posterior cerebellum, left putamen, and cingulate gyrus. The T2DM group illustrated altered neural activity in the superior temporal gyrus, supplementary motor area, and precentral gyrus. The correlation between fALFF signals and amyloid deposition was negative in the left anterior cingulate cortex for both groups. In the T2DM group, a positive correlation was shown in the right occipital lobe and left mesial temporal lobe.ConclusionThe altered fALFF signals were demonstrated in high-risk groups compared to HC. Very early amyloid deposition in SCD and T2DM groups was observed to affect the neural activity mainly involved in the default mode network (DMN).
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Affiliation(s)
- Yi-Wen Bao
- Department of Diagnostic Radiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Yat-Fung Shea
- Department of Medicine, Queen Mary Hospital, Hong Kong, Hong Kong SAR, China
| | | | - Joseph S. K. Kwan
- Department of Medicine, Queen Mary Hospital, Hong Kong, Hong Kong SAR, China
| | - Felix Hon-Wai Chan
- Department of Medicine, Queen Mary Hospital, Hong Kong, Hong Kong SAR, China
| | - Wing-Sun Chow
- Department of Medicine, Queen Mary Hospital, Hong Kong, Hong Kong SAR, China
| | - Koon-Ho Chan
- Department of Medicine, Queen Mary Hospital, Hong Kong, Hong Kong SAR, China
| | - Henry Ka-Fung Mak
- Department of Diagnostic Radiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
- *Correspondence: Henry Ka-Fung Mak
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Kim S, Lee K. A Network Analysis of Depressive Symptoms in the Elderly with Subjective Memory Complaints. J Pers Med 2022; 12:jpm12050821. [PMID: 35629243 PMCID: PMC9145813 DOI: 10.3390/jpm12050821] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Revised: 05/16/2022] [Accepted: 05/17/2022] [Indexed: 11/16/2022] Open
Abstract
(1) Background: Subjective memory complaints (SMCs) are common among the elderly and are important because they can indicate early cognitive impairment. The factor with the greatest correlation with SMCs is depression. The purpose of this study is to examine depressive symptoms among elderly individuals with SMCs through a network analysis that can analyze disease models between symptoms; (2) Methods: A total of 3489 data collected from elderly individuals in the community were analyzed. The Subjective Memory Complaints Questionnaire and Patient Health Questionnaire-9 were evaluated. For statistical analysis, we investigated the features of the depressive symptoms network, including centrality and clustering; (3) Results: Network analysis of the SMC group showed strong associations in the order of Q1–Q2 (r = 0.499), Q7–Q8 (r = 0.330), and Q1–Q6 (r = 0.239). In terms of centrality index, Q2 was highest in strength and expected influence, followed by Q1 in all of betweenness, strength, and expected influence; (4) Conclusions: The network analysis confirmed that the most important factors in the subjective cognitive decline group were depressed mood and anhedonia, which also had a strong correlation in the network pattern.
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Krikorian R, Skelton MR, Summer SS, Shidler MD, Sullivan PG. Blueberry Supplementation in Midlife for Dementia Risk Reduction. Nutrients 2022; 14:1619. [PMID: 35458181 PMCID: PMC9031005 DOI: 10.3390/nu14081619] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 04/08/2022] [Accepted: 04/10/2022] [Indexed: 02/04/2023] Open
Abstract
Late-life dementia typically develops over a period of many years beginning in midlife. Prevalence of metabolic disturbance also accelerates in middle age and is a prominent risk factor for dementia. Preliminary studies indicate that blueberry supplementation can improve cognitive performance and influence metabolism and brain function and therefore may have a role in early intervention to prevent neurodegeneration. In a randomized controlled trial, we investigated the effects of daily blueberry supplementation in a middle-aged sample of insulin-resistant participants with elevated risk for future dementia. We enrolled overweight men and women, aged 50 to 65 years, with subjective cognitive decline (SCD) and performed pre- and post-intervention assessments of cognition and metabolism and exploratory measures of peripheral mitochondrial function. We observed improved performances for the blueberry group on measures of lexical access, p = 0.003, and memory interference, p = 0.04, and blueberry-treated participants reported reduced memory encoding difficulty in daily life activities, p = 0.03. The blueberry-treated group also exhibited correction of peripheral hyperinsulinemia, p = 0.04, and a modest trend for increased mitochondrial uncoupling, p = 0.11. The cognitive findings indicated improved executive ability in this middle-aged sample. In addition, the changes in metabolic and bioenergetic measures imply potential mechanistic factors associated with anthocyanin and proanthocyanidin actions. The demonstration of these benefits in middle-aged individuals with insulin resistance and SCD suggests that ongoing blueberry supplementation may contribute to protection against cognitive decline when implemented early in at-risk individuals.
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Affiliation(s)
- Robert Krikorian
- Department of Psychiatry & Behavioral Neuroscience, University of Cincinnati Academic Health Center, Cincinnati, OH 45267, USA;
| | - Matthew R. Skelton
- Division of Neurology, Cincinnati Children’s Research Foundation, Cincinnati, OH 45229, USA;
| | - Suzanne S. Summer
- Bionutrition Core, Clinical Translational Research Center, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH 45229, USA;
| | - Marcelle D. Shidler
- Department of Psychiatry & Behavioral Neuroscience, University of Cincinnati Academic Health Center, Cincinnati, OH 45267, USA;
| | - Patrick G. Sullivan
- Spinal Cord & Brain Injury Research Center, Chandler College of Medicine, University of Kentucky, Lexington, KY 40506, USA;
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12
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Youn H, Choi M, Lee S, Kim D, Suh S, Han CE, Jeong HG. Decreased Cortical Thickness and Local Gyrification in Individuals with Subjective Cognitive Impairment. CLINICAL PSYCHOPHARMACOLOGY AND NEUROSCIENCE 2021; 19:640-652. [PMID: 34690119 PMCID: PMC8553542 DOI: 10.9758/cpn.2021.19.4.640] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/22/2020] [Revised: 10/19/2020] [Accepted: 10/26/2020] [Indexed: 12/02/2022]
Abstract
Objective Subjective cognitive impairment (SCI) is associated with future cognitive decline. This study aimed to compare cortical thickness and local gyrification index (LGI) between individuals with SCI and normal control (NC) subjects. Methods Forty-seven participants (27 SCI and 20 NC) were recruited. All participants underwent brain magnetic resonance imaging scanning and were clinically assessed using the Consortium to Establish a Registry for Alzheimer’s Disease (CERAD) battery of tests. We compared cortical thickness and LGI between the two groups and analyzed correlations between cortical thickness/LGI and scores on CERAD protocol subtests in the SCI group for region of interests with significant between-group differences. Results Cortical thickness reduction in the left entorhinal, superior temporal, insular, rostral middle frontal, precentral, superior frontal, and supramarginal regions, and right supramarginal, precentral, insular, postcentral, and posterior cingulate regions was observed in the SCI compared to the NC group. Cortical thickness in these regions correlated with scores of constructional praxis, word list memory, word list recall, constructional recall, trail making test A, and verbal fluency under the CERAD protocol. Significantly decreased gyrification was observed in the left lingual gyrus of the SCI group. In addition, gyrification of this region was positively associated with scores of constructional praxis. Conclusion Our results may provide an additional reference to the notion that SCI may be associated with future cognitive impairment. This study may help clinicians to assess individuals with SCI who may progress to mild cognitive impairment and Alzheimer’s dementia.
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Affiliation(s)
- HyunChul Youn
- Department of Psychiatry, Soonchunhyang University Bucheon Hospital, Bucheon, Korea
| | - Myungwon Choi
- Department of Electronics and Information Engineering, Korea University, Sejong, Korea
| | - Suji Lee
- Department of Biomedical Sciences, Korea University Graduate School, Seoul, Korea
| | - Daegyeom Kim
- Department of Electronics and Information Engineering, Korea University, Sejong, Korea
| | - Sangil Suh
- Departments of Radiology, Korea University Guro Hospital, Korea University College of Medicine, Seoul, Korea
| | - Cheol E Han
- Department of Electronics and Information Engineering, Korea University, Sejong, Korea
| | - Hyun-Ghang Jeong
- Departments of Psychiatry, Korea University Guro Hospital, Korea University College of Medicine, Seoul, Korea.,Korea University Research Institute of Mental Health, Seoul, Korea
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13
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Wang X, Wang M, Wang X, Zhou F, Jiang J, Liu H, Han Y. Subjective cognitive decline-related worries modulate the relationship between global amyloid load and gray matter volume in preclinical Alzheimer's disease. Brain Imaging Behav 2021; 16:1088-1097. [PMID: 34743296 DOI: 10.1007/s11682-021-00558-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Accepted: 09/06/2021] [Indexed: 12/31/2022]
Abstract
Subjective cognitive decline (SCD)-related worries are indicative of an increased risk for developing Alzheimer's disease (AD) dementia. However, the influence of SCD-related worries on the relationship between amyloid and gray matter (GM) atrophy remains unknown. A total of 93 SCD participants underwent 18F-florbetapir PET and T1-weighted MRI scans. SCD individuals were classified into amyloid-positive or amyloid-negative groups based on global amyloid uptake. Three-step statistical analyses were performed: (1) partial correlation analysis was conducted to determine whether global amyloid relates to GM volume in amyloid-positive and amyloid-negative groups; (2) linear regression analysis was conducted to determine whether the interaction term (worries × global amyloid) predicts GM volume; and (3) post hoc subgroup linear regression analysis was conducted to determine the association between amyloid and GM volume in the subgroups with and without worries. Age, sex, education and total intracranial volume were adjusted in all models. We found a negative relationship between global amyloid load and GM volume in the right hemisphere (r = 0.441, p = 0.012) and right temporal cortex (r = 0.506, p = 0.003) in the amyloid-positive group. Moreover, in the amyloid-positive group, a significant worries × amyloid interaction effect on GM volume was found in the bilateral hemisphere (right: pinteraction=0.037; left: pinteraction=0.036), left temporal cortex (pinteraction=0.044) and bilateral frontal cortex (right: pinteraction=0.010; left: pinteraction=0.011). Subsequent post hoc analysis revealed a significant amyloid-GM association only in the subgroup with worries but not in the subgroup without worries. In preclinical AD cases, SCD-related worries may occur as a symptom in those cases where amyloid affects GM to a greater extent and may thus represent a high-risk population for future cognitive decline.
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Affiliation(s)
- Xiaoqi Wang
- Department of Neurology, Xuanwu Hospital of Capital Medical University, Beijing, China
| | - Min Wang
- Key Laboratory of Specialty Fiber Optics and Optical Access Networks, Joint International Research Laboratory of Specialty Fiber Optics and Advanced Communication, School of Information and Communication Engineering, Shanghai University, Shanghai, China
| | - Xiaoni Wang
- Department of Neurology, Xuanwu Hospital of Capital Medical University, Beijing, China
| | - Feifan Zhou
- School of Biomedical Engineering, Hainan University, Haikou, China
| | - Jiehui Jiang
- Key Laboratory of Specialty Fiber Optics and Optical Access Networks, Joint International Research Laboratory of Specialty Fiber Optics and Advanced Communication, School of Information and Communication Engineering, Shanghai University, Shanghai, China.
| | - Hesheng Liu
- Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, USA.,Beijing Institute for Brain Disorders, Capital Medical University, Beijing, China.,Department of Neuroscience, Medical University of South Carolina, Charleston, SC, USA
| | - Ying Han
- Department of Neurology, Xuanwu Hospital of Capital Medical University, Beijing, China. .,School of Biomedical Engineering, Hainan University, Haikou, China. .,National Clinical Research Center for Geriatric Disorders, Beijing, China. .,Center of Alzheimer's Disease, Beijing Institute for Brain Disorders, Beijing, China.
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14
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Gagliardi G, Kuppe M, Lois C, Hanseeuw B, Vannini P. Pathological correlates of impaired self-awareness of memory function in Alzheimer's disease. Alzheimers Res Ther 2021; 13:118. [PMID: 34172086 PMCID: PMC8234669 DOI: 10.1186/s13195-021-00856-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Accepted: 06/02/2021] [Indexed: 01/28/2023]
Abstract
INTRODUCTION Impaired self-awareness of memory function, a.k.a. anosognosia, is a common symptom in Alzheimer's disease (AD); however, its pathological correlates remain unclear. Here, we investigated the impact of amyloid and tau on memory self-awareness. METHODS Two hundred thirty-six clinically normal (N) and 102 impaired (I) participants from the ADNI cohort were included. Amyloid (global) and tau burden (in entorhinal and inferior temporal cortices) were assessed using positron emission tomography (PET). Self-awareness of memory was assessed using discrepancy indexes of subjective participant-informant ratings, as well as participant-objective scores of memory performance. Subjective and objective values were derived from the Everyday Cognition memory questionnaire and Logical Memory (delayed recall). RESULTS Lower awareness (both methods) of memory function was associated with higher levels of pathology in the I group as compared to N. There was a significant effect of tauopathy, but not amyloidosis, on individual complaint, such that higher levels of tau associated with lower awareness. DISCUSSION Impaired self-awareness appears progressively in the evolution of the disease related to AD biomarkers. Discordant subjective and objective measures may be important for clinical consideration.
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Affiliation(s)
- Geoffroy Gagliardi
- Brigham and Women’s Hospital, Boston, MA USA
- Massachusetts General Hospital, Boston, MA USA
- Harvard Medical School, Boston, MA USA
| | | | - Cristina Lois
- Massachusetts General Hospital, Boston, MA USA
- Harvard Medical School, Boston, MA USA
| | - Bernard Hanseeuw
- Massachusetts General Hospital, Boston, MA USA
- Harvard Medical School, Boston, MA USA
| | - Patrizia Vannini
- Brigham and Women’s Hospital, Boston, MA USA
- Massachusetts General Hospital, Boston, MA USA
- Harvard Medical School, Boston, MA USA
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15
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Schwilk N, Klöppel S, Schmidtke K, Metternich B. Functional cognitive disorder in subjective cognitive decline-A 10-year follow-up. Int J Geriatr Psychiatry 2021; 36:677-683. [PMID: 33166421 DOI: 10.1002/gps.5466] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 09/19/2020] [Accepted: 11/01/2020] [Indexed: 01/03/2023]
Abstract
OBJECTIVES In memory clinics, patients with significant memory complaints without objective neuropsychological findings are common. They are classified as subjective cognitive decline (SCD) and, as a group, face a heightened risk for future dementia. However, the SCD group is heterogeneous and comprises patients suffering from a somatoform condition, namely functional cognitive disorder (FCD). These patients make up at least 11% of memory clinics' attendees. The aim of this long-term follow-up study was to investigate if patients diagnosed with FCD also face a higher risk of developing dementia. METHODS Forty-two Patients were recruited at a university hospital memory clinic. FCD was diagnosed according to the Schmidtke criteria (see Table 1). Ten years later, all were invited again. Participants were interviewed, screened for depression and given neuropsychological tests of verbal memory and information processing speed. Cognitive impairment was defined as performance below 1.5 standard deviations (SD) of the age-related mean. RESULTS Twenty-eight of 42 patients (67%) took part in this follow-up. The group's mean results in both cognitive measures were stable over time. All individual performances were within 1.5 SD. With 10 patients (24%), brief contact was successful and manifest dementia could be excluded. Four patients (10%) could not be contacted. CONCLUSIONS In retrospect, the Schmidtke criteria for FCD safely identified memory clinic attendees with SCD who did not proceed to Mild Cognitive Impairment or dementia. None of the patients who could be contacted for this follow-up after a decade (90% of baseline participants) showed signs of dementia.
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Affiliation(s)
- Nora Schwilk
- Department of Psychosomatic Medicine and Psychotherapy, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Stefan Klöppel
- University Hospital of Old Age Psychiatry and Psychotherapy, University of Bern, Bern, Switzerland
| | | | - Birgitta Metternich
- Department of Neurosurgery, Epilepsy Center, Medical Center-University of Freiburg, Freiburg, Germany
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16
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Chen Q, Qing Z, Jin J, Sun Y, Chen W, Lu J, Lv P, Liu J, Li X, Wang J, Zhang W, Wu S, Yan X, Nedelska Z, Hort J, Zhang X, Zhang B. Ego- and allo-network disconnection underlying spatial disorientation in subjective cognitive decline. Cortex 2021; 137:35-48. [PMID: 33588131 DOI: 10.1016/j.cortex.2020.12.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 10/27/2020] [Accepted: 12/18/2020] [Indexed: 11/24/2022]
Abstract
Patients with Alzheimer's disease (AD) related dementia and mild cognitive impairment experience difficulties with spatial navigation (SN). However, SN has rarely been investigated in individuals with subjective cognitive decline (SCD), a preclinical stage with elevated progression rate to symptomatic AD. In this study, 30 SCD subjects and 30 controls underwent cognitive scale (CS) evaluation, a 2D computerized SN test, and resting-state functional magnetic resonance imaging scanning. Two SN brain networks (ego-network and allo-network), each with 10 selected spherical regions, were defined. We calculated the average network functional connectivity (FC) and region-to-region FC within the two networks and evaluated correlations with SN performance. Compared with the controls, the SCD group performed worse in the SN test and showed decreased FC between the right retrosplenial and right prefrontal cortices in the ego-network, and between the right retrosplenial cortex and right hippocampus in the allo-network. The logistic regression model based on SN and FC measures revealed a high area under the curve of .880 in differentiating SCD individuals from controls. These results suggest that SN network disconnection contributes to spatial deficits in SCD, and SN and FC measures could benefit the preclinical detection of subjects with incipient AD dementia.
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Affiliation(s)
- Qian Chen
- Department of Radiology, Drum Tower Hospital, Clinical College of Nanjing Medical University, Nanjing 210008, China
| | - Zhao Qing
- Department of Radiology, Drum Tower Hospital, Medical School of Nanjing University, Nanjing, 210008, China; Institute of Brain Science, Nanjing University, Nanjing, 210008, China
| | - Jiaxuan Jin
- Department of Radiology, Drum Tower Hospital, Clinical College of Nanjing Medical University, Nanjing 210008, China
| | - Yi Sun
- Department of Radiology, Drum Tower Hospital, Medical School of Nanjing University, Nanjing, 210008, China
| | - Wenqian Chen
- Department of Radiology, Drum Tower Hospital, Medical School of Nanjing University, Nanjing, 210008, China
| | - Jiaming Lu
- Department of Radiology, Drum Tower Hospital, Medical School of Nanjing University, Nanjing, 210008, China
| | - Pin Lv
- Department of Radiology, Drum Tower Hospital, Medical School of Nanjing University, Nanjing, 210008, China
| | - Jiani Liu
- Department of Radiology, Drum Tower Hospital, Medical School of Nanjing University, Nanjing, 210008, China
| | - Xin Li
- Department of Radiology, Drum Tower Hospital, Clinical College of Nanjing Medical University, Nanjing 210008, China
| | - Junxia Wang
- Department of Radiology, Drum Tower Hospital, Clinical College of Nanjing Medical University, Nanjing 210008, China
| | - Wen Zhang
- Department of Radiology, Drum Tower Hospital, Medical School of Nanjing University, Nanjing, 210008, China
| | - Sichu Wu
- Department of Radiology, Drum Tower Hospital, Medical School of Nanjing University, Nanjing, 210008, China
| | - Xian Yan
- Department of Radiology, Drum Tower Hospital, Medical School of Nanjing University, Nanjing, 210008, China
| | - Zuzana Nedelska
- Memory Clinic, Department of Neurology, 2nd Faculty of Medicine, Charles University, University Hospital Motol, Prague, Czech Republic; International Clinical Research Center, St. Anne's University Hospital Brno, Brno, Czech Republic
| | - Jakub Hort
- Memory Clinic, Department of Neurology, 2nd Faculty of Medicine, Charles University, University Hospital Motol, Prague, Czech Republic; International Clinical Research Center, St. Anne's University Hospital Brno, Brno, Czech Republic
| | - Xin Zhang
- Department of Radiology, Drum Tower Hospital, Clinical College of Nanjing Medical University, Nanjing 210008, China; Department of Radiology, Drum Tower Hospital, Medical School of Nanjing University, Nanjing, 210008, China.
| | - Bing Zhang
- Department of Radiology, Drum Tower Hospital, Clinical College of Nanjing Medical University, Nanjing 210008, China; Department of Radiology, Drum Tower Hospital, Medical School of Nanjing University, Nanjing, 210008, China; Institute of Brain Science, Nanjing University, Nanjing, 210008, China.
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17
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Giroud N, Pichora-Fuller MK, Mick P, Wittich W, Al-Yawer F, Rehan S, Orange JB, Phillips NA. Hearing loss is associated with gray matter differences in older adults at risk for and with Alzheimer's disease. AGING BRAIN 2021; 1:100018. [PMID: 36911511 PMCID: PMC9997162 DOI: 10.1016/j.nbas.2021.100018] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 05/06/2021] [Accepted: 05/19/2021] [Indexed: 12/27/2022] Open
Abstract
Using data from the COMPASS-ND study we investigated associations between hearing loss and hippocampal volume as well as cortical thickness in older adults with subjective cognitive decline (SCD), mild cognitive impairment (MCI), and Alzheimer's dementia (AD). SCD participants with greater pure-tone hearing loss exhibited lower hippocampal volume, but more cortical thickness in the left superior temporal gyrus and right pars opercularis. Greater speech-in-noise reception thresholds were associated with lower cortical thickness bilaterally across much of the cortex in AD. The AD group also showed a trend towards worse speech-in-noise thresholds compared to the SCD group.
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Affiliation(s)
- N Giroud
- Department of Psychology, Centre for Research in Human Development, Concordia University, Montréal, Québec, Canada.,Centre for Research on Brain, Language, and Music, Montréal, Québec, Canada
| | - M K Pichora-Fuller
- Department of Psychology, University of Toronto, Mississauga, Ontario, Canada
| | - P Mick
- Department of Surgery, College of Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - W Wittich
- School of Optometry, Université de Montréal, Montreal, Quebec, Canada
| | - F Al-Yawer
- Department of Psychology, Centre for Research in Human Development, Concordia University, Montréal, Québec, Canada
| | - S Rehan
- Department of Psychology, Centre for Research in Human Development, Concordia University, Montréal, Québec, Canada
| | - J B Orange
- School of Communication Sciences and Disorders, Western University, London, Canada
| | - N A Phillips
- Department of Psychology, Centre for Research in Human Development, Concordia University, Montréal, Québec, Canada.,Centre for Research on Brain, Language, and Music, Montréal, Québec, Canada.,Lady Davis Institute for Medical Research, Jewish General Hospital, Montréal, Québec, Canada
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18
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Kang DW, Wang SM, Um YH, Na HR, Kim NY, Han K, Lee CU, Lim HK. Differential Risk of Incident Fractures Depending on Intensity and Frequency of Physical Activity According to Cognitive Status: A Nationwide Longitudinal Study. Front Med (Lausanne) 2020; 7:572466. [PMID: 33364244 PMCID: PMC7753209 DOI: 10.3389/fmed.2020.572466] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Accepted: 11/11/2020] [Indexed: 12/15/2022] Open
Abstract
Background: Previous studies have demonstrated an increased risk of fractures in subjects with various degrees of cognitive impairments. Recently, there has been growing recognition of the vital effect of physical activity (PA) on delay and prevention of fractures in older adults. Objectives: This study aimed to evaluate the optimal intensity and frequency of PA needed to prevent fractures in cognitively preserved older adults (CP), participants with subjective cognitive decline (SCD), and dementia patients using a large-scale nationwide cohort study. Methods: Data from a nationwide health screening program for individuals at the transitional age of 66 years were used in this study. A total of 968,240 subjects was enrolled, followed from 2007 to 2014, and classified as CP (n = 759,874), SCD (n = 195,365), or dementia group (n = 13,001). Adjusted hazard ratios (aHRs) by demographic and known risk factors for fractures were evaluated to identify the impact of various frequency and intensity PA on the occurrence of hip, vertebral, and limb fractures. Results: In CP participants, the most noticeable reduction of hip and vertebral fracture risk was shown in those performing vigorous-intensity PA at least three times per week. In the SCD group, the risk decrement in hip and vertebral fractures was most prominent in subjects who performed multiple-intensity PAs at least three times a week regardless of intensity. In the dementia group, only high-frequency walking and high-frequency & multiple-intensity PA decreased the risk of hip fractures compared with absence of PA. Conclusion: These findings suggest a role for various PA intensity and frequency levels to prevent hip and vertebral fractures according to cognitive status. Further study is needed to validate the effects of PA intensity and frequency proposed in this study on fractures according to cognitive status.
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Affiliation(s)
- Dong Woo Kang
- Department of Psychiatry, College of Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, South Korea
| | - Sheng-Min Wang
- Department of Psychiatry, College of Medicine, Yeouido St. Mary's Hospital, The Catholic University of Korea, Seoul, South Korea
| | - Yoo Hyun Um
- Department of Psychiatry, College of Medicine, St. Vincent's Hospital, The Catholic University of Korea, Suwon, South Korea
| | - Hae-Ran Na
- Department of Psychiatry, College of Medicine, Yeouido St. Mary's Hospital, The Catholic University of Korea, Seoul, South Korea
| | - Nak-Young Kim
- Department of Psychiatry, College of Medicine, Yeouido St. Mary's Hospital, The Catholic University of Korea, Seoul, South Korea
| | - Kyungdo Han
- Department of Statistics and Actuarial Science, Soongsil University, Seoul, South Korea
| | - Chang Uk Lee
- Department of Psychiatry, College of Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, South Korea
| | - Hyun Kook Lim
- Department of Psychiatry, College of Medicine, Yeouido St. Mary's Hospital, The Catholic University of Korea, Seoul, South Korea
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19
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Gagliardi G, Epelbaum S, Houot M, Bakardjian H, Boukadida L, Revillon M, Dubois B, Dalla Barba G, La Corte V. Which Episodic Memory Performance is Associated with Alzheimer's Disease Biomarkers in Elderly Cognitive Complainers? Evidence from a Longitudinal Observational Study with Four Episodic Memory Tests (Insight-PreAD). J Alzheimers Dis 2020; 70:811-824. [PMID: 31282413 DOI: 10.3233/jad-180966] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
BACKGROUND Alzheimer's disease (AD) pathology is found in the brain years before symptoms are usually detected. An episodic memory (EM) decline is considered to be the specific cognitive sign indicating a transition from the preclinical to the prodromal stage of AD. However, there is still no consensus on the most sensitive tool to detect it. OBJECTIVE The goal of our study was to determine which EM measures, among three clinically used EM tests and one research EM test, would be optimal to use for detection of early decline in elderly cognitive complainers. METHODS 318 healthy elderly participants with subjective cognitive complaint were followed for two years. We applied generalized linear mixed models to investigate the effect of baseline brain amyloid and metabolism on the longitudinal evolution of four EM tests. RESULTS Our findings show that participants performed significantly worse in two out of four EM tests (i.e., the Memory Binding Test and the Delayed Matched Sample test 48 items) as their level of brain amyloid load increased. However, we did not find an association between EM measures and brain metabolism. An interaction of the two biomarkers was associated with the number of intrusions in the Memory Binding Test over two years. CONCLUSION As most clinical trials in AD are now including patients at its early clinical stage, the precise delineation of the transition phase between the preclinical and prodromal stages of the disease is of crucial importance. Our study indicates that challenging EM tests and intrusions are valuable tools to identify this critical transition.
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Affiliation(s)
- Geoffroy Gagliardi
- Sorbonne Universités, UPMC Univ Paris 06, Inserm, CNRS, Institut du cerveau et de la moelle (ICM) - Hôpital Pitié-Salpêtrière, Paris, France.,Centre de référence pour les maladies d'Alzheimer du sujet jeune et les démences rares, Institut de la mémoire et de la maladie d'Alzheimer, Département de Neurologie, Groupe Hospitalier Pitié-Salpêtrière, Paris, France
| | - Stéphane Epelbaum
- Sorbonne Universités, UPMC Univ Paris 06, Inserm, CNRS, Institut du cerveau et de la moelle (ICM) - Hôpital Pitié-Salpêtrière, Paris, France.,Centre de référence pour les maladies d'Alzheimer du sujet jeune et les démences rares, Institut de la mémoire et de la maladie d'Alzheimer, Département de Neurologie, Groupe Hospitalier Pitié-Salpêtrière, Paris, France.,Inria, Aramis Project Team, Paris, France
| | - Marion Houot
- Centre de référence pour les maladies d'Alzheimer du sujet jeune et les démences rares, Institut de la mémoire et de la maladie d'Alzheimer, Département de Neurologie, Groupe Hospitalier Pitié-Salpêtrière, Paris, France.,Centre of excellence of neurodegenerative disease (CoEN), ICM, CIC Neurosciences, APHP Department of Neurology, Hopital Pitié-Salpêtrière, University Paris 6, Paris, France
| | - Hovagim Bakardjian
- Sorbonne Universités, UPMC Univ Paris 06, Inserm, CNRS, Institut du cerveau et de la moelle (ICM) - Hôpital Pitié-Salpêtrière, Paris, France.,Centre de référence pour les maladies d'Alzheimer du sujet jeune et les démences rares, Institut de la mémoire et de la maladie d'Alzheimer, Département de Neurologie, Groupe Hospitalier Pitié-Salpêtrière, Paris, France
| | - Laurie Boukadida
- Sorbonne Universités, UPMC Univ Paris 06, Inserm, CNRS, Institut du cerveau et de la moelle (ICM) - Hôpital Pitié-Salpêtrière, Paris, France.,Centre de référence pour les maladies d'Alzheimer du sujet jeune et les démences rares, Institut de la mémoire et de la maladie d'Alzheimer, Département de Neurologie, Groupe Hospitalier Pitié-Salpêtrière, Paris, France
| | - Marie Revillon
- Sorbonne Universités, UPMC Univ Paris 06, Inserm, CNRS, Institut du cerveau et de la moelle (ICM) - Hôpital Pitié-Salpêtrière, Paris, France.,Centre de référence pour les maladies d'Alzheimer du sujet jeune et les démences rares, Institut de la mémoire et de la maladie d'Alzheimer, Département de Neurologie, Groupe Hospitalier Pitié-Salpêtrière, Paris, France
| | - Bruno Dubois
- Sorbonne Universités, UPMC Univ Paris 06, Inserm, CNRS, Institut du cerveau et de la moelle (ICM) - Hôpital Pitié-Salpêtrière, Paris, France.,Centre de référence pour les maladies d'Alzheimer du sujet jeune et les démences rares, Institut de la mémoire et de la maladie d'Alzheimer, Département de Neurologie, Groupe Hospitalier Pitié-Salpêtrière, Paris, France.,Centre of excellence of neurodegenerative disease (CoEN), ICM, CIC Neurosciences, APHP Department of Neurology, Hopital Pitié-Salpêtrière, University Paris 6, Paris, France
| | - Gianfranco Dalla Barba
- Sorbonne Universités, UPMC Univ Paris 06, Inserm, CNRS, Institut du cerveau et de la moelle (ICM) - Hôpital Pitié-Salpêtrière, Paris, France.,Centre de référence pour les maladies d'Alzheimer du sujet jeune et les démences rares, Institut de la mémoire et de la maladie d'Alzheimer, Département de Neurologie, Groupe Hospitalier Pitié-Salpêtrière, Paris, France.,Dipartimento di Scienze della Vita, Universitá degli Studi di Trieste, Trieste, Italy
| | - Valentina La Corte
- Centre de référence pour les maladies d'Alzheimer du sujet jeune et les démences rares, Institut de la mémoire et de la maladie d'Alzheimer, Département de Neurologie, Groupe Hospitalier Pitié-Salpêtrière, Paris, France.,Memory and Cognition Laboratory, Institute of Psychology, University of Paris Descartes, Paris, France.,Center for Psychiatry & Neuroscience, INSERM U894, Paris, France
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20
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Gruters AAA, Ramakers IHGB, Verhey FRJ, Köhler S, Kessels RPC, de Vugt ME. Association Between Proxy- or Self-Reported Cognitive Decline and Cognitive Performance in Memory Clinic Visitors. J Alzheimers Dis 2020; 70:1225-1239. [PMID: 31322557 DOI: 10.3233/jad-180857] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
BACKGROUND It is uncertain whether self- and proxy-reported cognitive decline in older adults reflect an actual objective cognitive dysfunction in the clinical sense, and if these are predictive for developing dementia. OBJECTIVE The aim of the present study is to investigate the cross-sectional and longitudinal relation between subjective cognitive decline and objective cognitive performance, depressive symptoms, and to determine the predictive value for development of dementia. METHODS We included 405 patients without dementia at first visit from the Maastricht memory clinic participating in a longitudinal cohort study. Subjective cognitive decline was measured using a self- and proxy-report questionnaire. All patients underwent a standardized neuropsychological assessment. Follow-up assessments were performed yearly for three consecutive years, and once after five years. RESULTS Subjective cognitive decline was associated with lower cognitive performance and more depressive symptoms. When comparing self- (n = 342, 84%) and proxy-reported decline (n = 110, 27%), it was shown that proxy reports were associated with a more widespread pattern of lower cognitive performance. In participants without cognitive impairment proxy-reported decline was not associated with depressive symptoms. In contrast, self-reported decline was associated with a stable course of depressive symptoms at follow-up. Proxy-reported cognitive decline (HR = 1.76, 95% CI = 1.12- 2.78), and mutual complaints (HR = 1.73, CI:1.09- 2.76) predicted incident dementia while self-reported decline did not reach statistical significance (HR = 1.26, 95% CI = 0.65- 2.43). CONCLUSION Proxy-reported cognitive decline was consistently associated with lower cognitive performance and conversion to dementia over 5 years. Self-reported cognitive decline in patients without cognitive impairment might indicate underlying depressive symptoms and thus deserve clinical attention as well.
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Affiliation(s)
- Angélique A A Gruters
- Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience, Alzheimer Center Limburg, Maastricht University, Maastricht, The Netherlands
| | - Inez H G B Ramakers
- Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience, Alzheimer Center Limburg, Maastricht University, Maastricht, The Netherlands
| | - Frans R J Verhey
- Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience, Alzheimer Center Limburg, Maastricht University, Maastricht, The Netherlands
| | - Sebastian Köhler
- Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience, Alzheimer Center Limburg, Maastricht University, Maastricht, The Netherlands
| | - Roy P C Kessels
- Donders Institute for Brain, Cognition and Behaviour, Radboud University, Nijmegen, The Netherlands.,Department of Medical Psychology & Radboudumc Alzheimer Center, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Marjolein E de Vugt
- Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience, Alzheimer Center Limburg, Maastricht University, Maastricht, The Netherlands
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21
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Jayakody DMP, Menegola HK, Yiannos JM, Goodman-Simpson J, Friedland PL, Taddei K, Laws SM, Weinborn M, Martins RN, Sohrabi HR. The Peripheral Hearing and Central Auditory Processing Skills of Individuals With Subjective Memory Complaints. Front Neurosci 2020; 14:888. [PMID: 32982675 PMCID: PMC7475691 DOI: 10.3389/fnins.2020.00888] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Accepted: 07/30/2020] [Indexed: 11/22/2022] Open
Abstract
Purpose This study examined the central auditory processing (CAP) assessment results of adults between 45 and 85 years of age with probable pre-clinical Alzheimer’s disease – i.e., individuals with subjective memory complaints (SMCs) as compared to those who were not reporting significant levels of memory complaints (non-SMCs). It was hypothesized that the SMC group would perform significantly poorer on tests of central auditory skills compared to participants with non-SMCs (control group). Methods A total of 95 participants were recruited from the larger Western Australia Memory Study and were classified as SMCs (N = 61; 20 males and 41 females, mean age 71.47 ±7.18 years) and non-SMCs (N = 34; 10 males, 24 females, mean age 68.85 ±7.69 years). All participants completed a peripheral hearing assessment, a CAP assessment battery including Dichotic Digits, Duration Pattern Test, Dichotic Sentence Identification, Synthetic Sentence Identification with Ipsilateral Competing Message (SSI-ICM) and the Quick-Speech-in-Noise, and a cognitive screening assessment. Results The SMCs group performed significantly poorer than the control group on SSI-ICM −10 and −20 dB signal-to-noise conditions. No significant differences were found between the two groups on the peripheral hearing threshold measurements and other CAP assessments. Conclusions The results suggest that individuals with SMCs perform poorly on specific CAP assessments in comparison to the controls. The poor CAP in SMC individuals may result in a higher cost to their finite pool of cognitive resources. The CAP results provide yet another biomarker that supports the hypothesis that SMCs may be a primary indication of neuropathological changes in the brain. Longitudinal follow up of individuals with SMCs, and decreased CAP abilities should inform whether this group is at higher risk of developing dementia as compared to non-SMCs and those SMC individuals without CAP difficulties.
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Affiliation(s)
- Dona M P Jayakody
- Ear Science Institute Australia, Subiaco, WA, Australia.,Ear Sciences Centre Faculty of Health and Medical Sciences, The University of Western Australia, Crawley, WA, Australia
| | | | - Jessica M Yiannos
- Ear Science Institute Australia, Subiaco, WA, Australia.,School of Human Sciences, The University of Western Australia, Crawley, WA, Australia
| | | | - Peter L Friedland
- Department of Otolaryngology Head Neck Skull Base Surgery, Sir Charles Gairdner Hospital, Nedlands, WA, Australia.,School of Medicine, University Notre Dame, Fremantle, WA, Australia
| | - Kevin Taddei
- School of Medical and Health Sciences, Edith Cowan University, Joondalup, WA, Australia
| | - Simon M Laws
- Collaborative Genomics Group, School of Medical and Health Sciences, Edith Cowan University, Joondalup, WA, Australia.,School of Pharmacy and Biomedical Sciences, Faculty of Health Sciences, Curtin Health Innovation Research Institute, Curtin University, Bentley, WA, Australia
| | - Michael Weinborn
- School of Medical and Health Sciences, Edith Cowan University, Joondalup, WA, Australia.,School of Psychological Science, The University of Western Australia, Nedlands, WA, Australia
| | - Ralph N Martins
- School of Medical and Health Sciences, Edith Cowan University, Joondalup, WA, Australia.,Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Macquarie University, Sydney, NSW, Australia
| | - Hamid R Sohrabi
- School of Medical and Health Sciences, Edith Cowan University, Joondalup, WA, Australia.,Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Macquarie University, Sydney, NSW, Australia.,Centre for Healthy Ageing, School of Psychology and Exercise Science, Murdoch University, Murdoch, WA, Australia
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22
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Kuszewski JC, Howe PRC, Wong RHX. An Exploratory Analysis of Changes in Mental Wellbeing Following Curcumin and Fish Oil Supplementation in Middle-Aged and Older Adults. Nutrients 2020; 12:nu12102902. [PMID: 32977404 PMCID: PMC7598152 DOI: 10.3390/nu12102902] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Revised: 09/14/2020] [Accepted: 09/21/2020] [Indexed: 12/20/2022] Open
Abstract
Curcumin has previously been shown to enhance mood in non-depressed older adults. However, observed benefits were limited to short-term supplementation (4 weeks). In a 16 week randomized, double-blind, placebo-controlled, 2 × 2 factorial design trial, we supplemented overweight or obese non-depressed adults (50–80 years) with curcumin (160 mg/day), fish oil (2000 mg docosahexaenoic acid +400 mg eicosapentaenoic acid/day), or a combination of both. Secondary outcomes included mental wellbeing measures (mood states and subjective memory complaints (SMCs)) and quality of life (QoL). Furthermore, plasma apolipoprotein E4 (APOE4) was measured to determine whether APOE4 status influences responses to fish oil. Curcumin improved vigour (p = 0.044) compared to placebo and reduced SMCs compared to no curcumin treatment (p = 0.038). Fish oil did not affect any mood states, SMCs or QoL; however, responses to fish oil were affected by APOE4 status. In APOE4 non-carriers, fish oil increased vigour (p = 0.030) and reduced total mood disturbances (p = 0.048) compared to placebo. Improvements in mental wellbeing were correlated with increased QoL. Combining curcumin with fish oil did not result in additive effects. This exploratory analysis indicates that regular supplementation with either curcumin or fish oil (limited to APOE4 non-carriers) has the potential to improve some aspects of mental wellbeing in association with better QoL.
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Affiliation(s)
- Julia C. Kuszewski
- Clinical Nutrition Research Centre, School of Biomedical Sciences and Pharmacy, University of Newcastle, Callaghan 2308, Australia; (J.C.K.); (R.H.X.W.)
| | - Peter R. C. Howe
- Clinical Nutrition Research Centre, School of Biomedical Sciences and Pharmacy, University of Newcastle, Callaghan 2308, Australia; (J.C.K.); (R.H.X.W.)
- Institute for Resilient Regions, University of Southern Queensland, Springfield Central 4300, Australia
- UniSA Allied Health & Human Performance, University of South Australia, Adelaide 5000, Australia
- Correspondence: ; Tel.: +61-2-4921-7309
| | - Rachel H. X. Wong
- Clinical Nutrition Research Centre, School of Biomedical Sciences and Pharmacy, University of Newcastle, Callaghan 2308, Australia; (J.C.K.); (R.H.X.W.)
- Institute for Resilient Regions, University of Southern Queensland, Springfield Central 4300, Australia
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23
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Goda A, Murata S, Nakano H, Shiraiwa K, Abiko T, Nonaka K, Iwase H, Anami K, Horie J. Subjective and Objective Mental and Physical Functions Affect Subjective Cognitive Decline in Community-Dwelling Elderly Japanese People. Healthcare (Basel) 2020; 8:healthcare8030347. [PMID: 32962150 PMCID: PMC7551000 DOI: 10.3390/healthcare8030347] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 09/12/2020] [Accepted: 09/17/2020] [Indexed: 12/15/2022] Open
Abstract
Subjective cognitive decline (SCD) is complex and not well understood, especially among Japanese people. In the present study, we aimed to elucidate the relationships of subjective and objective mental and physical function with SCD among older community-dwelling Japanese adults. SCD was evaluated using the Kihon Checklist: Cognitive Function. Other parameters were evaluated using the Mini-Mental State Examination (MMSE) and the five-item version of the Geriatric Depression Scale (GDS-5), for an objective mental function other than SCD. A timed up-and-go test (TUG) and knee extension strength were used to test objective physical function, and the Mental Component Summary (MCS) and Physical Component Summary (PCS) in the Health-Related Quality of Life survey eight-item short form (SF-8) were used for subjective mental and physical functions. The results of the MMSE, GDS-5, TUG, knee extension strength, and MCS were significantly worse in the SCD group. In addition, logistic regression analysis showed that GDS-5 and MCS were associated with SCD onset. Depressive symptoms and decreased subjective mental function contribute to SCD among community-dwelling Japanese adults. These findings will be useful for planning dementia prevention and intervention programs for older Japanese adults.
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Affiliation(s)
- Akio Goda
- Department of Physical Therapy, Faculty of Health Sciences, Kyoto Tachibana University, Kyoto 607-8175, Japan; (S.M.); (H.N.); (K.S.); (T.A.); (J.H.)
- Correspondence: ; Tel.: +81-75-574-4313
| | - Shin Murata
- Department of Physical Therapy, Faculty of Health Sciences, Kyoto Tachibana University, Kyoto 607-8175, Japan; (S.M.); (H.N.); (K.S.); (T.A.); (J.H.)
| | - Hideki Nakano
- Department of Physical Therapy, Faculty of Health Sciences, Kyoto Tachibana University, Kyoto 607-8175, Japan; (S.M.); (H.N.); (K.S.); (T.A.); (J.H.)
| | - Kayoko Shiraiwa
- Department of Physical Therapy, Faculty of Health Sciences, Kyoto Tachibana University, Kyoto 607-8175, Japan; (S.M.); (H.N.); (K.S.); (T.A.); (J.H.)
| | - Teppei Abiko
- Department of Physical Therapy, Faculty of Health Sciences, Kyoto Tachibana University, Kyoto 607-8175, Japan; (S.M.); (H.N.); (K.S.); (T.A.); (J.H.)
| | - Koji Nonaka
- Department of Rehabilitation, Faculty of Health Sciences, Naragakuen University, Nara 631-8524, Japan; (K.N.); (K.A.)
| | - Hiroaki Iwase
- Department of Physical Therapy, Faculty of Rehabilitation, Kobe International University, Kobe 658-0032, Japan;
| | - Kunihiko Anami
- Department of Rehabilitation, Faculty of Health Sciences, Naragakuen University, Nara 631-8524, Japan; (K.N.); (K.A.)
| | - Jun Horie
- Department of Physical Therapy, Faculty of Health Sciences, Kyoto Tachibana University, Kyoto 607-8175, Japan; (S.M.); (H.N.); (K.S.); (T.A.); (J.H.)
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24
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Markova H, Nikolai T, Mazancova AF, Cechova K, Sheardova K, Georgi H, Kopecek M, Laczó J, Hort J, Vyhnalek M. Differences in Subjective Cognitive Complaints Between Non-Demented Older Adults from a Memory Clinic and the Community. J Alzheimers Dis 2020; 70:61-73. [PMID: 31177209 DOI: 10.3233/jad-180630] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Subjective cognitive complaints (SCCs) may represent an early cognitive marker of Alzheimer's disease (AD). There is a need to identify specific SCCs associated with an increased likelihood of underlying AD. OBJECTIVE Using the Questionnaire of Cognitive Complaints (QPC), we evaluated the pattern of SCCs in a clinical sample of non-demented older adults in comparison to cognitively healthy community-dwelling volunteers (HV). METHODS In total, 142 non-demented older adults from the Czech Brain Aging Study referred to two memory clinics for their SCCs were classified as having subjective cognitive decline (SCD, n = 85) or amnestic mild cognitive impairment (aMCI, n = 57) based on a neuropsychological evaluation. Furthermore, 82 age-, education-, and gender-matched HV were recruited. All subjects completed the QPC assessing the presence of specific SCCs in the last six months. RESULTS Both SCD and aMCI groups reported almost two times more SCCs than HV, but they did not differ from each other in the total QPC score. Impression of memory change and Impression of worse memory in comparison to peers were significantly more prevalent in both SCD and aMCI groups in comparison to HV; however, only the latter one was associated with lower cognitive performance. CONCLUSION The pattern of QPC-SCCs reported by SCD individuals was more similar to aMCI individuals than to HV. A complaint about memory change seems unspecific to pathological aging whereas a complaint about worse memory in comparison to peers might be one of the promising items from QPC questionnaire potentially reflecting subtle cognitive changes.
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Affiliation(s)
- Hana Markova
- Department of Neurology, Memory Clinic, 2nd Faculty of Medicine, Charles University and Motol University Hospital, Prague, Czech Republic.,International Clinical Research Center, St. Anne's University Hospital Brno, Brno, Czech Republic
| | - Tomas Nikolai
- Department of Neurology, Memory Clinic, 2nd Faculty of Medicine, Charles University and Motol University Hospital, Prague, Czech Republic.,International Clinical Research Center, St. Anne's University Hospital Brno, Brno, Czech Republic.,Department of Neurology and Centre of Clinical Neuroscience, Neuropsychology Laboratory, Charles University, First Faculty of Medicine and General University Hospital in Prague, Czech Republic.,National Institute of Mental Health, Klecany, Czech Republic
| | - Adela Fendrych Mazancova
- International Clinical Research Center, St. Anne's University Hospital Brno, Brno, Czech Republic.,Department of Neurology and Centre of Clinical Neuroscience, Neuropsychology Laboratory, Charles University, First Faculty of Medicine and General University Hospital in Prague, Czech Republic
| | - Katerina Cechova
- Department of Neurology, Memory Clinic, 2nd Faculty of Medicine, Charles University and Motol University Hospital, Prague, Czech Republic.,International Clinical Research Center, St. Anne's University Hospital Brno, Brno, Czech Republic
| | - Katerina Sheardova
- International Clinical Research Center, St. Anne's University Hospital Brno, Brno, Czech Republic
| | - Hana Georgi
- National Institute of Mental Health, Klecany, Czech Republic
| | | | - Jan Laczó
- Department of Neurology, Memory Clinic, 2nd Faculty of Medicine, Charles University and Motol University Hospital, Prague, Czech Republic.,International Clinical Research Center, St. Anne's University Hospital Brno, Brno, Czech Republic
| | - Jakub Hort
- Department of Neurology, Memory Clinic, 2nd Faculty of Medicine, Charles University and Motol University Hospital, Prague, Czech Republic.,International Clinical Research Center, St. Anne's University Hospital Brno, Brno, Czech Republic
| | - Martin Vyhnalek
- Department of Neurology, Memory Clinic, 2nd Faculty of Medicine, Charles University and Motol University Hospital, Prague, Czech Republic.,International Clinical Research Center, St. Anne's University Hospital Brno, Brno, Czech Republic
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25
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Hu H, Tan L, Bi YL, Xu W, Tan L, Shen XN, Hou XH, Ma YH, Dong Q, Yu JT. Association of serum Apolipoprotein B with cerebrospinal fluid biomarkers of Alzheimer's pathology. Ann Clin Transl Neurol 2020; 7:1766-1778. [PMID: 32910550 PMCID: PMC7545610 DOI: 10.1002/acn3.51153] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 06/23/2020] [Accepted: 07/16/2020] [Indexed: 12/29/2022] Open
Abstract
Objective To examine whether apolipoprotein B (ApoB), apolipoprotein A‐1 (ApoA1), or their ratio (ApoB/A1) were associated with early changes in cerebrospinal fluid (CSF) biomarkers of Alzheimer’s disease (AD) pathology in elderly adults with subjective cognitive decline (SCD). Methods This study included 507 objective cognitive normal participants from the Chinese Alzheimer’s Biomarker and LifestylE (CABLE) database including 288 cognitive normal participants (CN) and 219 SCD. Multiple linear regression models were used to examine the associations of apolipoproteins with CSF AD biomarkers. Results Compared with control group, SCD participants with significant AD biological characteristics had lower ApoB levels (P = 0.0461). In total participants, lower level of serum ApoB was associated with decreases in CSF Aβ42 (P = 0.0015) and Aβ42/40 (P = 0.0081) as well as increases in CSF p‐tau/Aβ42 (P < 0.0001) and t‐tau/Aβ42 (P = 0.0013), independent of APOEɛ4 status. In further subgroup analysis, these associations were more significant in SCD participants (ApoB × Diagnose: P < 0.05). In addition, lower levels of ApoB were also found associated with increases in p‐tau in the SCD subgroup (P = 0.0263). Furthermore, these protective associations were more significant in the overweight participants (ApoB × weight: P < 0.05). Results showed no association between ApoA1 and CSF biomarkers. Interpretation This study is the first to find protective associations of serum ApoB with CSF AD core biomarkers, especially in SCD individuals. It indicated that ApoB may be a potential biomarker for preclinical AD and may play different roles in different stages of AD.
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Affiliation(s)
- Hao Hu
- Department of Neurology, Qingdao Municipal Hospital, Qingdao University, Qingdao, China
| | - Lan Tan
- Department of Neurology, Qingdao Municipal Hospital, Qingdao University, Qingdao, China
| | - Yan-Lin Bi
- Department of Anesthesiology, Qingdao Municipal Hospital, Qingdao University, Qingdao, China
| | - Wei Xu
- Department of Neurology, Qingdao Municipal Hospital, Qingdao University, Qingdao, China
| | - Lin Tan
- Department of Neurology, Qingdao Municipal Hospital, Qingdao University, Qingdao, China
| | - Xue-Ning Shen
- Department of Neurology and Institute of Neurology, WHO Collaborating Center for Research and Training in Neurosciences, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
| | - Xiao-He Hou
- Department of Neurology, Qingdao Municipal Hospital, Qingdao University, Qingdao, China
| | - Ya-Hui Ma
- Department of Neurology, Qingdao Municipal Hospital, Qingdao University, Qingdao, China
| | - Qiang Dong
- Department of Neurology and Institute of Neurology, WHO Collaborating Center for Research and Training in Neurosciences, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
| | - Jin-Tai Yu
- Department of Neurology and Institute of Neurology, WHO Collaborating Center for Research and Training in Neurosciences, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
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26
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Yan T, Wang Y, Weng Z, Du W, Liu T, Chen D, Li X, Wu J, Han Y. Early-Stage Identification and Pathological Development of Alzheimer's Disease Using Multimodal MRI. J Alzheimers Dis 2020; 68:1013-1027. [PMID: 30958352 DOI: 10.3233/jad-181049] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Alzheimer's disease (AD) is one of the most common progressive and irreversible neurodegenerative diseases. The study of the pathological mechanism of AD and early-stage diagnosis is essential and important. Subjective cognitive decline (SCD), the first at-risk stage of AD occurring prior to amnestic mild cognitive impairment (aMCI), is of great research value and has gained our interest. To investigate the entire pathological development of AD pathology efficiently, we proposed a machine learning classification method based on a multimodal support vector machine (SVM) to investigate the structural and functional connectivity patterns of the three stages of AD (SCD, aMCI, and AD). Our experiments achieved an accuracy of 98.58% in the AD group, 97.76% in the aMCI group, and 80.24% in the SCD group. Moreover, in our experiments, we identified the most discriminating brain regions, which were mainly located in the default mode network and subcortical structures (SCS). Notably, with the development of AD pathology, SCS regions have become increasingly important, and structural connectivity has shown more discriminative power than functional connectivity. The current study may shed new light on the pathological mechanism of AD and suggests that whole-brain connectivity may provide potential effective biomarkers for the early-stage diagnosis of AD.
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Affiliation(s)
- Tianyi Yan
- School of Life Science, Beijing Institute of Technology, Beijing, China
| | - Yonghao Wang
- School of Life Science, Beijing Institute of Technology, Beijing, China
| | - Zizheng Weng
- Daniel Felix Ritchie School of Engineering and Computer Science, University of Denver, Denver, CO, USA
| | - Wenying Du
- Department of Neurology, XuanWu Hospital of Capital Medical University, Beijing, China
| | - Tiantian Liu
- School of Life Science, Beijing Institute of Technology, Beijing, China
| | - Duanduan Chen
- School of Life Science, Beijing Institute of Technology, Beijing, China
| | - Xuesong Li
- School of Computer Science and Technology, Beijing Institute of Technology, Beijing, China
| | - Jinglong Wu
- Beijing Advanced Innovation Center for Intelligent Robots and Systems; Beijing Institute of Technology, Beijing, China
| | - Ying Han
- Department of Neurology, XuanWu Hospital of Capital Medical University, Beijing, China.,Center of Alzheimer's Disease, Beijing Institute for Brain Disorders, Beijing, China.,Beijing Institute of Geriatrics, Beijing, China.,National Clinical Research Center for Geriatric Disorders, Beijing, China
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27
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Dauphinot V, Bouteloup V, Mangin J, Vellas B, Pasquier F, Blanc F, Hanon O, Gabelle A, Annweiler C, David R, Planche V, Godefroy O, Rivasseau‐Jonveaux T, Chupin M, Fischer C, Chêne G, Dufouil C, Krolak‐Salmon P. Subjective cognitive and non-cognitive complaints and brain MRI biomarkers in the MEMENTO cohort. ALZHEIMER'S & DEMENTIA (AMSTERDAM, NETHERLANDS) 2020; 12:e12051. [PMID: 32647745 PMCID: PMC7335902 DOI: 10.1002/dad2.12051] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 05/23/2020] [Accepted: 05/26/2020] [Indexed: 12/05/2022]
Abstract
INTRODUCTION Subjective cognitive complaints may be a signature of preclinical stage Alzheimer's disease. However, the link between subjective cognitive and non-cognitive complaints and brain alterations remains unclear. METHODS The relationship between cognitive and non-cognitive complaints and brain biomarkers, measured by structural magnetic resonance imaging, was investigated in 2056 participants of the MEMENTO cohort of outpatients, who were dementia-free at baseline. We assessed whether the cognitive status at inclusion or the presence of the apolipoprotein E gene variant (APOE) ε4 could modulate the association between the intensity of complaints and brain lesions. RESULTS Smaller hippocampal volume was associated with higher memory complaints and discomfort in daily life. In APOE ε4 carriers, smaller whole-brain white matter and gray matter volumes and gyrification indices in several regions of interest of the parietal and temporal lobes, in the entorhinal and the para-hippocampal gyrus, were associated with higher memory complaint score. CONCLUSIONS The intensity of subjective complaints in not only memory but discomfort in daily life was associated with brain degeneration markers. The presence of APOE ε4 modulated the relationships between subjective memory complaints and brain alterations.
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Affiliation(s)
- Virginie Dauphinot
- Clinical and Research Memory Centre of LyonLyon Institute for ElderlyCharpennes HospitalUniversity Hospital of LyonLyonFrance
| | - Vincent Bouteloup
- InsermBordeaux Population Health Research CenterUMR 1219Bordeaux UniversityISPEDBordeaux UniversityBordeauxFrance
- University hospital of BordeauxPublic Health CenterBordeauxFrance
| | - Jean‐François Mangin
- CATI Multicenter Neuroimaging Platform (http://cati‐neuroimaging.com)Gif‐sur‐YvetteParisFrance
- NeurospinCEAParis‐Saclay UniversityGif‐sur‐YvetteFrance
| | - Bruno Vellas
- GérontopôleUniversity hospital of Toulouse (CHU Toulouse)ToulouseFrance
- Inserm UMR1027University of Toulouse III Paul SabatierToulouseFrance
| | - Florence Pasquier
- Univ LilleInserm 1171, CHUClinical and Research Memory Research Centre (CMRR) of DistalzLilleFrance
| | - Frédéric Blanc
- Clinical and Memory Research Centre of Strasbourg (CMRR)University hostpital of StrasbourgGeriatrics unitGeriatric Day HospitalStrasbourgFrance
| | - Olivier Hanon
- Geriatry unitParis Descartes UniversityBroca hospitalParisFrance
| | - Audrey Gabelle
- Clinical and Research Memory center of MontpellierDepartment of NeurologyGui de Chauliac HospitalUniversity of MontpellierMontpellierFrance
| | - Cédric Annweiler
- Department of Geriatric MedicineAngers University HospitalAngers University Memory Clinic; Research Center on Autonomy and Longevity; UPRES EA 4638University of AngersAngersFrance
- Robarts Research InstituteDepartment of Medical BiophysicsSchulich School of Medicine and Dentistrythe University of Western OntarioLondonOntarioCanada
| | - Renaud David
- Clinical and Research Memory Centre of Nice University hospital of NiceEA COBTeKCôte d'Azur UniversityNiceFrance
| | - Vincent Planche
- Clinical and Research Memory Centre of BordeauxClinical neurosciences centreUniversity hospital of BordeauxF‐33000 BordeauxFrance et 2. Univ. BordeauxCNRSgérontopole Institute of Neurodegenerative DiseasesBordeauxFrance
| | - Olivier Godefroy
- Departments of NeurologyAmiens University Hospital (CHU Amiens)and Laboratory of Functional Neurosciences (EA 4559)Jules Verne University of PicardieAmiensFrance
- Institute of the Brain and Spinal CordInsermU1127,3 CNRS, UMR 7225Sorbonne UniversityParisFrance
| | - Thérèse Rivasseau‐Jonveaux
- Clinical and Research Memory Centre of LorraineHospital of BraboisCognitive‐behavioral unitPaul Spillmann CentreCHRU de NancyFrance
- Communications Research GroupInterpsy EA4432 PsychologyUniversity of LorraineNancyFrance
| | - Marie Chupin
- CATI Multicenter Neuroimaging Platform (http://cati‐neuroimaging.com)Gif‐sur‐YvetteParisFrance
- NeurospinCEAParis‐Saclay UniversityGif‐sur‐YvetteFrance
| | - Clara Fischer
- CATI Multicenter Neuroimaging Platform (http://cati‐neuroimaging.com)Gif‐sur‐YvetteParisFrance
- NeurospinCEAParis‐Saclay UniversityGif‐sur‐YvetteFrance
| | - Geneviève Chêne
- InsermBordeaux Population Health Research CenterUMR 1219Bordeaux UniversityISPEDBordeaux UniversityBordeauxFrance
- University hospital of BordeauxPublic Health CenterBordeauxFrance
| | - Carole Dufouil
- InsermBordeaux Population Health Research CenterUMR 1219Bordeaux UniversityISPEDBordeaux UniversityBordeauxFrance
- University hospital of BordeauxPublic Health CenterBordeauxFrance
| | - Pierre Krolak‐Salmon
- Clinical and Research Memory Centre of LyonLyon Institute for ElderlyCharpennes HospitalUniversity Hospital of LyonLyonFrance
- Clinical and Research Memory Centre of LorraineHospital of BraboisCognitive‐behavioral unitPaul Spillmann CentreCHRU de NancyFrance
- Communications Research GroupInterpsy EA4432 PsychologyUniversity of LorraineNancyFrance
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Spano G, Caffò AO, Lanciano T, Curci A, Bosco A. Visuospatial/executive abilities and mood affect the reliability of a subjective memory complaints measure. Aging Clin Exp Res 2020; 32:1317-1326. [PMID: 31428996 DOI: 10.1007/s40520-019-01307-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Accepted: 08/05/2019] [Indexed: 11/25/2022]
Abstract
BACKGROUND Inconsistent results are reported so far in the literature on the relationship between subjective memory complaints (SMC) and objective memory performance. Mixed findings triggered the need to investigate whether other potential mediating variables, such as mood and non-memory domains, affect the relationship between SMC and memory performance. AIMS The present study aimed to contribute in clarifying the relation between subjective and objective memory considering the potential role of mood and visuospatial/executive functions. METHODS Six hundred and sixty Italian community-dwelling adults (52-91 years old) were enrolled. Italian version of Montreal Cognitive Assessment Test (MoCA), Geriatric Depression Scale and Subjective Memory Complaints Questionnaire (SMCQ) were administered. Four subsamples were composed according to the following criteria: (a) participants with high visuospatial/executive function (VSE) score at MoCA and high mood; (b) participants with high VSE score and low mood; (c) participants with low VSE score and high mood and; (d) participants with low VSE score and low mood. RESULTS Preliminarily, two confirmatory factor analysis have set the one-factor structure of SMCQ as the best fitting model. Diagnostic accuracy of the SMCQ in discriminating high and low memory score was assessed. ROC analyses confirmed that a low score in executive tasks was associated with poor reliability of the SMCQ. On the contrary, well-preserved executive functions and high mood levels ensured a good reliability of SMCQ in detecting memory problems. DISCUSSION AND CONCLUSIONS Although mood is a key mediator in the relationship between subjective and objective memory, preserving executive functions is essential for ensuring the accuracy of memory self-appraisal in adulthood and elderly.
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Affiliation(s)
- Giuseppina Spano
- Department of Agro-Environmental and Territorial Sciences, University of Bari Aldo Moro, Via Amendola 165/A, 70126, Bari, Italy.
- Department of Educational Sciences, Psychology, Communication Sciences, University of Bari Aldo Moro, Via Crisanzio, 42, 70122, Bari, Italy.
| | - Alessandro O Caffò
- Department of Educational Sciences, Psychology, Communication Sciences, University of Bari Aldo Moro, Via Crisanzio, 42, 70122, Bari, Italy
| | - Tiziana Lanciano
- Department of Educational Sciences, Psychology, Communication Sciences, University of Bari Aldo Moro, Via Crisanzio, 42, 70122, Bari, Italy
| | - Antonietta Curci
- Department of Educational Sciences, Psychology, Communication Sciences, University of Bari Aldo Moro, Via Crisanzio, 42, 70122, Bari, Italy
| | - Andrea Bosco
- Department of Educational Sciences, Psychology, Communication Sciences, University of Bari Aldo Moro, Via Crisanzio, 42, 70122, Bari, Italy
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29
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Ioulietta L, Kostas G, Spiros N, Vangelis OP, Anthoula T, Ioannis K, Magda T, Dimitris K. A Novel Connectome-Based Electrophysiological Study of Subjective Cognitive Decline Related to Alzheimer's Disease by Using Resting-State High-Density EEG EGI GES 300. Brain Sci 2020; 10:brainsci10060392. [PMID: 32575641 PMCID: PMC7349850 DOI: 10.3390/brainsci10060392] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 06/17/2020] [Accepted: 06/18/2020] [Indexed: 12/17/2022] Open
Abstract
Aim: To investigate for the first time the brain network in the Alzheimer’s disease (AD) spectrum by implementing a high-density electroencephalography (HD-EEG - EGI GES 300) study with 256 channels in order to seek if the brain connectome can be effectively used to distinguish cognitive impairment in preclinical stages. Methods: Twenty participants with AD, 30 with mild cognitive impairment (MCI), 20 with subjective cognitive decline (SCD) and 22 healthy controls (HC) were examined with a detailed neuropsychological battery and 10 min resting state HD-EEG. We extracted correlation matrices by using Pearson correlation coefficients for each subject and constructed weighted undirected networks for calculating clustering coefficient (CC), strength (S) and betweenness centrality (BC) at global (256 electrodes) and local levels (29 parietal electrodes). Results: One-way ANOVA presented a statistically significant difference among the four groups at local level in CC [F (3, 88) = 4.76, p = 0.004] and S [F (3, 88) = 4.69, p = 0.004]. However, no statistically significant difference was found at a global level. According to the independent sample t-test, local CC was higher for HC [M (SD) = 0.79 (0.07)] compared with SCD [M (SD) = 0.72 (0.09)]; t (40) = 2.39, p = 0.02, MCI [M (SD) = 0.71 (0.09)]; t (50) = 0.41, p = 0.004 and AD [M (SD) = 0.68 (0.11)]; t (40) = 3.62, p = 0.001 as well, while BC showed an increase at a local level but a decrease at a global level as the disease progresses. These findings provide evidence that disruptions in brain networks in parietal organization may potentially represent a key factor in the ability to distinguish people at early stages of the AD continuum. Conclusions: The above findings reveal a dynamically disrupted network organization of preclinical stages, showing that SCD exhibits network disorganization with intermediate values between MCI and HC. Additionally, these pieces of evidence provide information on the usefulness of the 256 HD-EEG in network construction.
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Affiliation(s)
- Lazarou Ioulietta
- Information Technologies Institute, Centre for Research and Technology Hellas (CERTH-ITI), 57001 Thessaloniki, Greece; (G.K.); (N.S.); (O.V.P.); (T.A.); (K.I.); (T.M.)
- 1st Department of Neurology, G.H. “AHEPA”, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki (AUTH), 54124 Thessaloniki, Greece
- Correspondence:
| | - Georgiadis Kostas
- Information Technologies Institute, Centre for Research and Technology Hellas (CERTH-ITI), 57001 Thessaloniki, Greece; (G.K.); (N.S.); (O.V.P.); (T.A.); (K.I.); (T.M.)
- Informatics Department, Aristotle University of Thessaloniki (AUTH), 54124 Thessaloniki, Greece
| | - Nikolopoulos Spiros
- Information Technologies Institute, Centre for Research and Technology Hellas (CERTH-ITI), 57001 Thessaloniki, Greece; (G.K.); (N.S.); (O.V.P.); (T.A.); (K.I.); (T.M.)
| | - Oikonomou P. Vangelis
- Information Technologies Institute, Centre for Research and Technology Hellas (CERTH-ITI), 57001 Thessaloniki, Greece; (G.K.); (N.S.); (O.V.P.); (T.A.); (K.I.); (T.M.)
| | - Tsolaki Anthoula
- Information Technologies Institute, Centre for Research and Technology Hellas (CERTH-ITI), 57001 Thessaloniki, Greece; (G.K.); (N.S.); (O.V.P.); (T.A.); (K.I.); (T.M.)
- Greek Association of Alzheimer’s Disease and Related Disorders (GAADRD), 54643 Thessaloniki, Greece
| | - Kompatsiaris Ioannis
- Information Technologies Institute, Centre for Research and Technology Hellas (CERTH-ITI), 57001 Thessaloniki, Greece; (G.K.); (N.S.); (O.V.P.); (T.A.); (K.I.); (T.M.)
| | - Tsolaki Magda
- Information Technologies Institute, Centre for Research and Technology Hellas (CERTH-ITI), 57001 Thessaloniki, Greece; (G.K.); (N.S.); (O.V.P.); (T.A.); (K.I.); (T.M.)
- 1st Department of Neurology, G.H. “AHEPA”, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki (AUTH), 54124 Thessaloniki, Greece
- Greek Association of Alzheimer’s Disease and Related Disorders (GAADRD), 54643 Thessaloniki, Greece
| | - Kugiumtzis Dimitris
- Department of Electrical and Computer Engineering, Faculty of Engineering, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece;
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Longitudinal relationships among depressive symptoms and three types of memory self-report in cognitively intact older adults. Int Psychogeriatr 2020; 32:719-732. [PMID: 31309918 PMCID: PMC6962573 DOI: 10.1017/s104161021900084x] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
OBJECTIVES The current study examined whether self-reported memory problems among cognitively intact older adults changed concurrently with, preceded, or followed depressive symptoms over time. DESIGN Data were collected annually via in-person comprehensive medical and neuropsychological examinations as part of the Einstein Aging Study. SETTING Community-dwelling older adults in an urban, multi-ethnic area of New York City were interviewed. PARTICIPANTS The current study included a total of 1,162 older adults (Mage = 77.65, SD = 5.03, 63.39% female; 74.12% White). Data were utilized from up to 11 annual waves per participant. MEASUREMENTS Multilevel modeling tested concurrent and lagged associations between three types of memory self-report (frequency of memory problems, perceived one-year decline, and perceived ten-year decline) and depressive symptoms. RESULTS Results showed that self-reported frequency of memory problems covaried with depressive symptoms only in participants who were older at baseline. Changes in perceived one-year and ten-year memory decline were related to changes in depressive symptoms across all ages. Depressive symptoms increased the likelihood of perceived ten-year memory decline the next year; however, perceived ten-year memory decline did not predict future depressive symptoms. Additionally, no significant temporal relationship was observed between depressive symptoms and self-reported frequency of memory problems or perceived one-year memory decline. CONCLUSION Our findings highlight the importance of testing the unique associations of different types of self-reported memory problems with depressive symptoms.
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31
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Depressive symptoms precede self-reports of perceived 10-year decline in memory in community-dwelling older adults. Int Psychogeriatr 2020; 32:677-680. [PMID: 32616114 DOI: 10.1017/s104161021900187x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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32
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Gagliardi G, Houot M, Cacciamani F, Habert MO, Dubois B, Epelbaum S. The meta-memory ratio: a new cohort-independent way to measure cognitive awareness in asymptomatic individuals at risk for Alzheimer's disease. ALZHEIMERS RESEARCH & THERAPY 2020; 12:57. [PMID: 32408882 PMCID: PMC7222501 DOI: 10.1186/s13195-020-00626-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Accepted: 05/01/2020] [Indexed: 01/28/2023]
Abstract
Background Lack of awareness of cognitive decline (ACD) has been described at the preclinical and prodromal stages of Alzheimer’s disease (AD). In this study, we introduced a meta-memory ratio (MMR) and explored how it is associated with neuroimaging AD biomarkers in asymptomatic individuals at risk for AD. Method Four hundred forty-eight cognitively healthy participants from two cohorts of subjective memory complainers (INSIGHT-PreAD and ADNI) were included. Regression models were used to assess the impact of AD biomarkers on the MMR. Result In both cohorts, there was a significant quadratic effect of cerebral amyloidosis on the MMR value. In particular, participants had a high ACD up to the amyloid positivity threshold, above which a decrease of ACD was eventually observed as the amyloid load increased. Conclusion This nonlinear evolution of ACD in very early AD must be taken into account in clinical care and for trial enrollment as well.
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Affiliation(s)
- Geoffroy Gagliardi
- Sorbonne Universités, UPMC Univ Paris 06, Inserm, CNRS, Institut du cerveau et de la moelle (ICM) - Hôpital Pitié-Salpêtrière, Paris, France. .,AP-HP, Groupe Hospitalier Pitié-Salpêtrière, Département de Neurologie, Institut de la mémoire et de la maladie d'Alzheimer, Paris, France.
| | - Marion Houot
- AP-HP, Groupe Hospitalier Pitié-Salpêtrière, Département de Neurologie, Institut de la mémoire et de la maladie d'Alzheimer, Paris, France.,Centre of excellence of neurodegenerative disease (CoEN), ICM, CIC Neurosciences, APHP Department of Neurology, Hopital Pitié-Salpêtrière, University Paris 6, Paris, France
| | - Federica Cacciamani
- Sorbonne Universités, UPMC Univ Paris 06, Inserm, CNRS, Institut du cerveau et de la moelle (ICM) - Hôpital Pitié-Salpêtrière, Paris, France.,AP-HP, Groupe Hospitalier Pitié-Salpêtrière, Département de Neurologie, Institut de la mémoire et de la maladie d'Alzheimer, Paris, France.,Aramis project-team, Inria-APHP collaboration, F-75013, Paris, France
| | - Marie-Odile Habert
- Sorbonne Universités, CNRS, INSERM, Laboratoire d'Imagerie Biomédicale, Paris, France.,Centre pour l'Acquisition et le Traitement des Images, Paris, France.,Département de Médecine Nucléaire, AP-HP, Hôpital Pitié-Salpêtrière, Paris, France
| | - Bruno Dubois
- Sorbonne Universités, UPMC Univ Paris 06, Inserm, CNRS, Institut du cerveau et de la moelle (ICM) - Hôpital Pitié-Salpêtrière, Paris, France.,AP-HP, Groupe Hospitalier Pitié-Salpêtrière, Département de Neurologie, Institut de la mémoire et de la maladie d'Alzheimer, Paris, France.,Centre of excellence of neurodegenerative disease (CoEN), ICM, CIC Neurosciences, APHP Department of Neurology, Hopital Pitié-Salpêtrière, University Paris 6, Paris, France
| | - Stéphane Epelbaum
- Sorbonne Universités, UPMC Univ Paris 06, Inserm, CNRS, Institut du cerveau et de la moelle (ICM) - Hôpital Pitié-Salpêtrière, Paris, France.,AP-HP, Groupe Hospitalier Pitié-Salpêtrière, Département de Neurologie, Institut de la mémoire et de la maladie d'Alzheimer, Paris, France.,Aramis project-team, Inria-APHP collaboration, F-75013, Paris, France
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33
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Semba RD, Tian Q, Carlson MC, Xue QL, Ferrucci L. Motoric cognitive risk syndrome: Integration of two early harbingers of dementia in older adults. Ageing Res Rev 2020; 58:101022. [PMID: 31996326 PMCID: PMC7697173 DOI: 10.1016/j.arr.2020.101022] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Revised: 01/10/2020] [Accepted: 01/21/2020] [Indexed: 12/17/2022]
Abstract
Dementia is characterized by a long preclinical phase that may last years to decades before the onset of mild cognitive impairment. Slow gait speed and subjective memory complaint commonly co-occur during this preclinical phase, and each is a strong independent predictor of cognitive decline and dementia. Motoric cognitive risk (MCR) syndrome is a pre-dementia syndrome that combines these two early harbingers of dementia. The risk of cognitive decline or dementia is stronger for MCR than for either slow gait speed or subjective memory complaint alone. Slow gait speed and subjective memory complaint have several common risk factors: cardiovascular disease, diabetes mellitus, abnormal cortisol profiles, low vitamin D levels, brain atrophy with decreased hippocampal volume, and increased deposition of beta-amyloid in the brain. The underlying pathogenesis of MCR remains poorly understood. Metabolomics and proteomics have great potential to provide new insights into biological pathways involved in MCR during the long preclinical phase preceding dementia.
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Affiliation(s)
- Richard D Semba
- Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
| | - Qu Tian
- National Institute on Aging, National Institutes of Health, Baltimore, MD, USA
| | - Michelle C Carlson
- Department of Mental Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Qian-Li Xue
- Departments of Medicine, Biostatistics, and Epidemiology, Johns Hopkins University, Baltimore, MD, USA
| | - Luigi Ferrucci
- National Institute on Aging, National Institutes of Health, Baltimore, MD, USA
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34
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McWhirter L, Ritchie C, Stone J, Carson A. Functional cognitive disorders: a systematic review. Lancet Psychiatry 2020; 7:191-207. [PMID: 31732482 DOI: 10.1016/s2215-0366(19)30405-5] [Citation(s) in RCA: 111] [Impact Index Per Article: 27.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 08/28/2019] [Accepted: 08/29/2019] [Indexed: 12/18/2022]
Abstract
Cognitive symptoms are common, and yet many who seek help for cognitive symptoms neither have, nor go on to develop, dementia. A proportion of these people are likely to have functional cognitive disorders, a subtype of functional neurological disorders, in which cognitive symptoms are present, associated with distress or disability, but caused by functional alterations rather than degenerative brain disease or another structural lesion. In this Review, we have systematically examined the prevalence and clinical associations of functional cognitive disorders, and related phenotypes, within the wider cognitive disorder literature. Around a quarter of patients presenting to memory clinics received diagnoses that might indicate the presence of functional cognitive disorders, which were associated with affective symptoms, negative self-evaluation, negative illness perceptions, non-progressive symptom trajectories, and linguistic and behavioural differences during clinical interactions. Those with functional cognitive disorder phenotypes are at risk of iatrogenic harm because of misdiagnosis or inaccurate prediction of future decline. Further research is imperative to improve diagnosis and identify effective treatments for functional cognitive disorders, and better understanding these phenotypes will also improve the specificity of diagnoses of prodromal degenerative brain disease.
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Affiliation(s)
- Laura McWhirter
- Centre for Clinical Brain Sciences, University of Edinburgh, Edinburgh, UK.
| | - Craig Ritchie
- Centre for Clinical Brain Sciences, University of Edinburgh, Edinburgh, UK
| | - Jon Stone
- Centre for Clinical Brain Sciences, University of Edinburgh, Edinburgh, UK
| | - Alan Carson
- Centre for Clinical Brain Sciences, University of Edinburgh, Edinburgh, UK
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35
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Brown MJ, Patterson R. Subjective Cognitive Decline Among Sexual and Gender Minorities: Results from a U.S. Population-Based Sample. J Alzheimers Dis 2020; 73:477-487. [PMID: 31796675 PMCID: PMC7299090 DOI: 10.3233/jad-190869] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The risk of dementia and mild cognitive impairment between older adults in same-sex relationships and those in opposite-sex relationships have been found to be statistically not different. However, studies examining subjective cognitive decline (SCD) among sexual and gender minority populations (SGM) are lacking. The primary objective was to determine if SGM report greater SCD compared to non-SGM populations in a U.S. population-based sample of non-institutionalized adults aged 45 and older. The secondary objective was to assess the association between gender and SCD. Cross-sectional data were obtained from the 2016 Behavioral Risk Factor Surveillance System (n = 36,734). There were 1,094 SGM adults in the sample. Descriptive statistics examined sociodemographic characteristics and their distribution by SCD and SGM status. Crude and multivariable logistic regression models were used to determine the association between SGM status, gender, and SCD. Adjusted models controlled for age, race/ethnicity, income, education, employment, marital status, depression, and diabetes. Statistically significant differences in SGM status and SCD existed by age, race/ethnicity, education, employment, marital status, and depression. Differences in SCD also existed by income and diabetes status. There was no statistically significant association between SGM status and SCD (OR: 0.88; 95% CI: 0.63-1.24). However, men had 64% higher odds (OR: 1.64; 95% CI: 1.44-1.88) of reporting SCD compared to women. Future studies examining the potential reasons for this null association, including resilience and/or premature aging are warranted. Future research assessing potential reasons for gender differences in SCD, whether physiological or environmental, is also needed.
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Affiliation(s)
- Monique J. Brown
- Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, SC
- South Carolina SmartState Center for Healthcare Quality, Arnold School of Public Health, University of South Carolina, Columbia, SC
- Rural and Minority Health Research Center, Arnold School of Public Health, University of South Carolina, Columbia, SC
- Office for the Study on Aging, Arnold School of Public Health, University of South Carolina, Columbia, SC
| | - Robert Patterson
- Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, SC
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Vyhnálek M, Marková H, Laczó J, De Beni R, Di Nuovo S. Assessment of Memory Impairment in Early Diagnosis of Alzheimer's Disease. Curr Alzheimer Res 2019; 16:975-985. [PMID: 31724515 DOI: 10.2174/1567205016666191113125303] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 11/02/2019] [Accepted: 11/05/2019] [Indexed: 11/22/2022]
Abstract
Memory impairment has been considered as one of the earliest clinical hallmarks of Alzheimer's disease. This paper summarizes recent progress in the assessment of memory impairment in predementia stages. New promising approaches of memory assessment include evaluation of longitudinal cognitive changes, assessment of long-term memory loss, evaluation of subjective cognitive concerns and testing of other memory modalities, such as spatial memory. In addition, we describe new challenging memory tests based on memory binding paradigms that have been recently developed and are currently being validated.
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Affiliation(s)
- Martin Vyhnálek
- Memory Clinic, Department of Neurology, Charles University, 2nd Faculty of Medicine and Motol University Hospital, Prague, Czech Republic.,International Clinical Research Center, St. Anne's University Hospital Brno, Brno, Czech Republic
| | - Hana Marková
- Memory Clinic, Department of Neurology, Charles University, 2nd Faculty of Medicine and Motol University Hospital, Prague, Czech Republic.,International Clinical Research Center, St. Anne's University Hospital Brno, Brno, Czech Republic
| | - Jan Laczó
- Memory Clinic, Department of Neurology, Charles University, 2nd Faculty of Medicine and Motol University Hospital, Prague, Czech Republic.,International Clinical Research Center, St. Anne's University Hospital Brno, Brno, Czech Republic
| | | | - Santo Di Nuovo
- Department of Education, University of Catania, Catania, Italy
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Wu YY, Hsu WC, Huang YH, Ho WM, Chen YC. Memory Complaint Is a Surrogate for Memory Decline in the Middle-Aged: A Register-Based Study. J Clin Med 2019; 8:jcm8111900. [PMID: 31703376 PMCID: PMC6912512 DOI: 10.3390/jcm8111900] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 10/26/2019] [Accepted: 11/05/2019] [Indexed: 12/19/2022] Open
Abstract
Memory complaint is one of the earliest symptoms of dementia. The causes and prognosis of memory complaint in the middle-aged population remain largely unknown. We reviewed the register-based data of 2129 patients with memory complaints. Among them, 404 participants were between 40 and 65 years old. The participants were separated into three groups: subjective cognitive decline (SCD), neurodegenerative diseases (ND), and non-neurodegenerative diseases (NND). One-year decline was defined as a decrease of ≥1 on the mini-mental state examination (MMSE). At baseline, 131 participants (32%) were diagnosed with SCD, 141 (35%) with ND, and 132 (33%) with NND. The 1-year cognitive decline rate was higher among patients with ND (36.8%) than in the SCD (7.3%, p = 1.3 × 10−8) and NND groups (7.6%, p = 1.1 × 10−7). One-year decline did not differ between the SCD and NND groups. Lower baseline MMSE score predicted increased risk of 1-year cognitive decline (odds ratio (OR) = 1.126, 95% confidence interval (CI) = 1.076–1.178, p = 2.52 × 10−7). Memory complaint in middle age carried a risk of 1-year cognitive decline, and baseline MMSE is an independent predictor of decline. An initial diagnosis of SCD held the same risk effect for decline as NND. These findings highlighted the necessity for neuropsychological tests in those with memory complaints presenting to the clinic.
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Affiliation(s)
- Yah-Yuan Wu
- Department of Neurology, Chang Gung Memorial Hospital Linkou Medical Center and College of Medicine, Chang Gung University, Taoyuan 333, Taiwan; (Y.-Y.W.); (W.-C.H.); (Y.-H.H.); (W.-M.H.)
- Dementia Center, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
| | - Wen-Chuin Hsu
- Department of Neurology, Chang Gung Memorial Hospital Linkou Medical Center and College of Medicine, Chang Gung University, Taoyuan 333, Taiwan; (Y.-Y.W.); (W.-C.H.); (Y.-H.H.); (W.-M.H.)
- Dementia Center, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
| | - Yu-Hua Huang
- Department of Neurology, Chang Gung Memorial Hospital Linkou Medical Center and College of Medicine, Chang Gung University, Taoyuan 333, Taiwan; (Y.-Y.W.); (W.-C.H.); (Y.-H.H.); (W.-M.H.)
- Dementia Center, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
| | - Wei-Min Ho
- Department of Neurology, Chang Gung Memorial Hospital Linkou Medical Center and College of Medicine, Chang Gung University, Taoyuan 333, Taiwan; (Y.-Y.W.); (W.-C.H.); (Y.-H.H.); (W.-M.H.)
- Dementia Center, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
| | - Yi-Chun Chen
- Department of Neurology, Chang Gung Memorial Hospital Linkou Medical Center and College of Medicine, Chang Gung University, Taoyuan 333, Taiwan; (Y.-Y.W.); (W.-C.H.); (Y.-H.H.); (W.-M.H.)
- Dementia Center, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
- Correspondence: or ; Tel.: +886-3-328-1200 (ext. 8347); Fax: +886-3-328-7226
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Older Adults With Subjective Cognitive Decline Worry About the Emotional Impact of Cognitive Test Results. Alzheimer Dis Assoc Disord 2019; 34:135-140. [DOI: 10.1097/wad.0000000000000354] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Ávila-Villanueva M, Maestú F, Fernández-Blázquez MA. Internal Consistency Over Time of Subjective Cognitive Decline: Drawing Preclinical Alzheimer's Disease Trajectories. J Alzheimers Dis 2019; 66:173-183. [PMID: 30248053 DOI: 10.3233/jad-180307] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
BACKGROUND Early intervention to prevent, or delay, the transition from healthy cognition to cognitive impairment in older adults is an important goal. In this way, it is critical to find sensitive, reproducible, and early markers to use low cost methods for the detection of that transition. One of those early markers for symptomatic manifestation of AD is subjective cognitive decline (SCD). OBJECTIVE To examine the internal consistency of the concept of SCD and to evaluate its clinical significance on the progression through the continuum of AD. METHODS 1,091 cognitively healthy individuals from the Vallecas Project cohort were followed for three years. Cognitive complaints were systematically collected and analyzed along with clinical data. All participants were classified in three groups at every visit based on specific features of their complaints. RESULTS Concordance analyses showed a good agreement in longitudinal classification of SCD. The Multi-state Markov Model highlighted a unidirectional transition from the status of no cognitive complaints to SCD. Interestingly, a more severe condition of SCD, namely SCD Plus, showed the highest risk of progression to mild cognitive impairment. CONCLUSIONS The concept of SCD is stable over time when it is operationally defined and consistently assessed. It provides not only a fast identification of individuals at higher risk of future mild cognitive impairment, but also it allows us to track longitudinal trajectories.
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Affiliation(s)
- Marina Ávila-Villanueva
- Alzheimer Disease Research Unit, CIEN Foundation, Carlos III Institute of Health, Alzheimer Center Queen Sofía Foundation, Madrid, Spain.,Department of Experimental Psychology, Complutense University of Madrid (UCM), Madrid, Spain
| | - Fernando Maestú
- Department of Experimental Psychology, Complutense University of Madrid (UCM), Madrid, Spain.,Laboratory of Cognitive and Computational Neuroscience (UCM-UPC), Center for Biomedical Technology, Madrid, Spain
| | - Miguel A Fernández-Blázquez
- Alzheimer Disease Research Unit, CIEN Foundation, Carlos III Institute of Health, Alzheimer Center Queen Sofía Foundation, Madrid, Spain
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Shokouhi S, Conley AC, Baker SL, Albert K, Kang H, Gwirtsman HE, Newhouse PA. The relationship between domain-specific subjective cognitive decline and Alzheimer's pathology in normal elderly adults. Neurobiol Aging 2019; 81:22-29. [PMID: 31207466 PMCID: PMC6732237 DOI: 10.1016/j.neurobiolaging.2019.05.011] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Revised: 05/13/2019] [Accepted: 05/15/2019] [Indexed: 11/19/2022]
Abstract
We evaluated the associations of subjective (self-reported everyday cognition [ECog]) and objective cognitive measures with regional amyloid-β (Aβ) and tau accumulation in 86 clinically normal elderly subjects from the Alzheimer's Disease Neuroimaging Initiative. Regression analyses were conducted to identify whether individual ECog domains (Memory, Language, Organization, Planning, Visuospatial, and Divided Attention) were equally or differentially associated with regional [18F]florbetapir and [18F]flortaucipir uptake and how these associations compared to those obtained with objective cognitive measures. A texture analysis, the weighted 2-point correlation, was used as an additional approach for estimating the whole-brain tau burden without positron emission tomography intensity normalization. Although the strongest models for ECog domains included either tau (planning and visuospatial) or Aβ (memory and organization), the strongest models for all objective measures included Aβ. In Aβ-negative participants, the strongest models for all ECog domains of executive functioning included tau. Our results indicate differential associations of individual subjective cognitive domains with Aβ and tau in clinically normal adults. Detailed characterization of ECog may render a valuable prescreening tool for pathological prediction.
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Affiliation(s)
- Sepideh Shokouhi
- Department of Psychiatry and Behavioral Sciences, Center for Cognitive Medicine, Vanderbilt University Medical Center, Nashville, TN, USA.
| | - Alexander C Conley
- Department of Psychiatry and Behavioral Sciences, Center for Cognitive Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Suzanne L Baker
- Center for Functional Imaging, Molecular Biophysics and Integrated Bioimaging, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - Kimberly Albert
- Department of Psychiatry and Behavioral Sciences, Center for Cognitive Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Hakmook Kang
- Department of Biostatistics, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Harry E Gwirtsman
- Department of Psychiatry and Behavioral Sciences, Center for Cognitive Medicine, Vanderbilt University Medical Center, Nashville, TN, USA; Geriatric Research, Education, and Clinical Center, Tennessee Valley Veterans Affairs Medical Center, Nashville, TN, USA
| | - Paul A Newhouse
- Department of Psychiatry and Behavioral Sciences, Center for Cognitive Medicine, Vanderbilt University Medical Center, Nashville, TN, USA; Geriatric Research, Education, and Clinical Center, Tennessee Valley Veterans Affairs Medical Center, Nashville, TN, USA
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41
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Zlatar ZZ, Muniz M, Galasko D, Salmon DP. Subjective Cognitive Decline Correlates With Depression Symptoms and Not With Concurrent Objective Cognition in a Clinic-Based Sample of Older Adults. J Gerontol B Psychol Sci Soc Sci 2019; 73:1198-1202. [PMID: 28329816 DOI: 10.1093/geronb/gbw207] [Citation(s) in RCA: 92] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Accepted: 12/14/2016] [Indexed: 11/14/2022] Open
Abstract
Objectives Subjective cognitive decline (SCD) is common in older adults; however, its utility in clinic-based samples remains controversial given its strong associations with mood symptoms. Methods Five hundred nineteen individuals aged 60-95 with a wide range of cognitive performance scores were referred by community health clinics for brief screening of cognitive complaints. Linear regression models examined the cross-sectional associations between SCD (5-item self-reported questions), symptoms of depression (Beck Depression Inventory [BDI]), and concurrent objective cognitive performance (Cognitive Composite) adjusting for demographics. Results There was not a significant association between SCD and concurrent objective cognition after adjusting for demographics and depression. In contrast, there was a significant association between SCD and depression after adjusting for demographics and objective cognition. There was also a consistent association between SCD and depression, but not between SCD and objective cognition, in those with high and low levels of SCD reporting, in all ranges of cognitive performance, and in those with mild to moderate depression. Discussion Results are consistent with previous findings and suggest that SCD does not accurately reflect concurrent cognitive performance in a clinic-based sample of older adults. Clinical interpretation of SCD should account for the role of depression.
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Affiliation(s)
- Zvinka Z Zlatar
- Department of Psychiatry, University of California, San Diego, La Jolla
| | - Martha Muniz
- Shiley-Marcos Alzheimer's Disease Research Center, Department of Neurosciences, University of California, San Diego, La Jolla
| | - Douglas Galasko
- Shiley-Marcos Alzheimer's Disease Research Center, Department of Neurosciences, University of California, San Diego, La Jolla
| | - David P Salmon
- Shiley-Marcos Alzheimer's Disease Research Center, Department of Neurosciences, University of California, San Diego, La Jolla
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Is brain connectome research the future frontier for subjective cognitive decline? A systematic review. Clin Neurophysiol 2019; 130:1762-1780. [PMID: 31401485 DOI: 10.1016/j.clinph.2019.07.004] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Revised: 06/26/2019] [Accepted: 07/07/2019] [Indexed: 11/24/2022]
Abstract
OBJECTIVE We performed a systematic literature review on Subjective Cognitive Decline (SCD) in order to examine whether the resemblance of brain connectome and functional connectivity (FC) alterations in SCD with respect to MCI, AD and HC can help us draw conclusions on the progression of SCD to more advanced stages of dementia. METHODS We searched for studies that used any neuroimaging tool to investigate potential differences/similarities of brain connectome in SCD with respect to HC, MCI, and AD. RESULTS Sixteen studies were finally included in the review. Apparent FC connections and disruptions were observed in the white matter, default mode and gray matter networks in SCD with regards to HC, MCI, and AD. Interestingly, more apparent connections in SCD were located over the posterior regions, while an increase of FC over anterior regions was observed as the disease progressed. CONCLUSIONS Elders with SCD display a significant disruption of the brain network, which in most of the cases is worse than HC across multiple network parameters. SIGNIFICANCE The present review provides comprehensive and balanced coverage of a timely target research activity around SCD with the intention to identify similarities/differences across patient groups on the basis of brain connectome properties.
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Akpan A, Tabue-Teguo M, Fougère B. Neurocognitive Disorders: Importance of Early/Timely Detection in Daily Clinical Practice. J Alzheimers Dis 2019; 70:317-322. [PMID: 31177208 DOI: 10.3233/jad-180381] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Neurocognitive disorders create important challenges for patients, their families, and clinicians who provide their health care. Early/timely detection in daily clinical practice allows for diagnosis and adequate treatment, psychosocial support, education, and engagement in shared decision-making related to health care, life planning, involvement in research, and financial matters. However, neurocognitive disorders, when present, are not detected or not diagnosed and not documented, in more than half of patients seen by primary care physicians. The aim of this paper is to highlight the strategies and the perspectives to improve the early/timely detection of neurocognitive disorders in daily clinical practice.
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Affiliation(s)
- Asangaedem Akpan
- Department of Medicine for Older People and Stroke, Aintree University Hospital NHS FT, Liverpool, UK
| | | | - Bertrand Fougère
- Division of Geriatric Medicine, Tours University Hospital, Tours, France
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Macoir J, Lafay A, Hudon C. Reduced Lexical Access to Verbs in Individuals With Subjective Cognitive Decline. Am J Alzheimers Dis Other Demen 2019; 34:5-15. [PMID: 30041538 PMCID: PMC10852429 DOI: 10.1177/1533317518790541] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2024]
Abstract
The detection of cognitive impairment in individuals with subjective cognitive decline (SCD) may improve detection of the emergence of Alzheimer's disease (AD) pathology. This detection is challenging, however, given the lack of sensitive assessment tools. The main objective of this study was to determine the potential contribution of word production tasks to the detection of cognitive impairment in SCD. The performances of 20 individuals with SCD, healthy controls (HCs), and individuals with mild cognitive impairment (MCI) were compared on object and action naming and free fluency tasks. Participants with SCD performed similarly to HCs, while both groups differed significantly from participants with MCI in object naming and object fluency. Results showed that participants with SCD were at the midpoint between HCs and participants with MCI in action naming. They also revealed a HCs > SCD = MCI pattern in action fluency. This study provides evidence that verb production is impaired in SCD and that SCD is a pre-MCI condition.
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Affiliation(s)
- Joël Macoir
- Département de réadaptation, Faculté de médecine, Université Laval, Quebec City, Quebec, Canada
- Centre de recherche CERVO, CERVO Brain Research Center, Quebec City, Quebec, Canada
| | - Anne Lafay
- Département de réadaptation, Faculté de médecine, Université Laval, Quebec City, Quebec, Canada
- Centre de recherche CERVO, CERVO Brain Research Center, Quebec City, Quebec, Canada
| | - Carol Hudon
- Département de réadaptation, Faculté de médecine, Université Laval, Quebec City, Quebec, Canada
- École de psychologie, Université Laval, Quebec City, Quebec, Canada
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Lee MJ, Varadaraj V, Ramulu PY, Whitson HE, Deal JA, Swenor BK. Memory and Confusion Complaints in Visually Impaired Older Adults: An Understudied Aspect of Well-Being. Gerontol Geriatr Med 2019; 5:2333721418818944. [PMID: 30671493 PMCID: PMC6328951 DOI: 10.1177/2333721418818944] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2018] [Revised: 11/20/2018] [Accepted: 11/21/2018] [Indexed: 11/17/2022] Open
Abstract
Objective: To determine the prevalence of cognitive (memory or confusion) complaints in older adults with visual impairment (VI). Method: We assessed the relationship between VI (corrected visual acuity [VA] < 20/40) and self-reported confusion or problems with memory among participants aged 60 years to 85 years in the 1999-2006 cycles of National Health and Nutrition Examination Survey (n = 5,795). Prevalence estimates of cognitive complaints were calculated using Current Population Surveys. Results: Memory/confusion complaints were reported in 22% of the VI group and 11% of the no VI group (p < .001). In individuals aged ≥ 80 years, 30% of those with VI reported cognitive complaints, as compared with 19% with no VI (p = .003). In fully adjusted models, individuals with VI were more likely (OR = 1.3, p = .049) to report cognitive complaints as compared with those without VI. Conclusion: Subjective reports of memory or confusion are highly prevalent in older individuals with VI.
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Affiliation(s)
- Moon Jeong Lee
- Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Varshini Varadaraj
- Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Pradeep Y Ramulu
- Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Heather E Whitson
- Duke University Medical Center, Durham, NC, USA.,Durham VA Medical Center, NC, USA
| | - Jennifer A Deal
- Department of Epidemiology, Johns Hopkins, Bloomberg School of Public Health, Baltimore, MD, USA.,The Johns Hopkins Cochlear Center for Hearing and Public Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Bonnielin K Swenor
- Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, USA
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46
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De Vito A, Calamia M, Weitzner DS, Bernstein J. Examining differences in neuropsychiatric symptom factor trajectories in empirically derived mild cognitive impairment subtypes. Int J Geriatr Psychiatry 2018; 33:1627-1634. [PMID: 30276884 PMCID: PMC8785654 DOI: 10.1002/gps.4963] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Accepted: 07/22/2018] [Indexed: 12/28/2022]
Abstract
OBJECTIVE The aim of this study was to examine neuropsychiatric symptom (NPS) factor severity progression over time in empirically derived (ED) mild cognitive impairment (MCI) subtypes. METHODS Participants in the Alzheimer's Disease Neuroimaging Initiative study diagnosed with MCI by Alzheimer's Disease Neuroimaging Initiative protocol using conventional clinical (CC) criteria (n = 788) were reclassified using cluster analysis as amnestic, dysnomic, dysexecutive MCI, or cluster-derived normal (CC-Normal) using empirical criteria. Cognitively normal (CN) participants (n = 207) were also identified. The Neuropsychiatric Inventory-Questionnaire (NPI-Q) was administered from baseline through 48-month follow-up. Exploratory factor analysis was completed to determine the NPI-Q factor structure at 6-month follow-up. Multilevel modeling was used to determine NPI-Q symptom severity factor and apathy symptom progression over time by cognitive subtype. RESULTS The exploratory factor analysis revealed that the NPI-Q consisted of 2 factors: hyperactivity/agitation and mood symptoms. Using clinical and empirical criteria, all MCI groups were identified as having more severe hyperactivity/agitation symptoms than CN participants. However, only the amnestic MCI group identified using empirical criteria showed an increase in symptom severity over time relative to CN participants. Mood factor and apathy symptoms were found to be more severe in dysexecutive and amnestic groups in both models. Similarly, both models identified a significant worsening of mood and apathy symptoms over time for dysexecutive and amnestic groups relative to CN participants. CONCLUSIONS This study provides further support that empirical criteria aid in examining the progression of clinical characteristics associated with MCI. Further, it helps to identify which MCI subtypes may be at higher risk for NPS progression.
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Affiliation(s)
- Alyssa De Vito
- Louisiana State University, Department of Psychology, Baton Rouge, LA 70803
| | - Matthew Calamia
- Louisiana State University, Department of Psychology, Baton Rouge, LA 70803
| | - Daniel S. Weitzner
- Louisiana State University, Department of Psychology, Baton Rouge, LA 70803
| | - John Bernstein
- Louisiana State University, Department of Psychology, Baton Rouge, LA 70803
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Scheef L, Grothe MJ, Koppara A, Daamen M, Boecker H, Biersack H, Schild HH, Wagner M, Teipel S, Jessen F. Subregional volume reduction of the cholinergic forebrain in subjective cognitive decline (SCD). NEUROIMAGE-CLINICAL 2018; 21:101612. [PMID: 30555006 PMCID: PMC6413297 DOI: 10.1016/j.nicl.2018.101612] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Revised: 11/22/2018] [Accepted: 11/26/2018] [Indexed: 11/26/2022]
Abstract
Subjective cognitive decline (SCD) patients are considered as a risk population for preclinical Alzheimer's Disease (AD). Supporting this idea, previous studies in SCD populations report subtle alterations in various cognitive and neuroimaging biomarkers that are typically affected during AD progression. To extend these observations, the present study examined whether SCD patients show atrophy of cholinergic basal forebrain nuclei (chBFN), analogous with recent findings in prodromal and clinical AD patients. We assessed volume reductions of the chBFN in 24 SCD subjects compared to 49 matched controls on 3D-T1-weighted MR images based on a postmortem derived atlas. Furthermore, we assessed whether chBFN atrophy was linked with cognitive, structural and metabolic biomarker alterations we previously reported in this SCD cohort: Using correlation analyses we tested for associations between the volumes of the chBFN with the hippocampal gray matter volume, and posterior medial glucose consumption, and the trajectory of verbal memory performance. The SCD cases showed a significant total volume reduction of the chBFN, with largest effect sizes in the Ch1/2 and Ch4p subdivisions of the chBFN. The latter was associated with a reduced glucose metabolism in the precuneus for the SCD group only. These data show an early involvement of the cholinergic basal forebrain nuclei in SCD predominantly in Ch1/2 and Ch4p which supports the conceptual link between SCD and preclinical AD. Cholinergic forebrain shows atrophy in SCD. Ch12 and posterior part of Nucl. Basalis Meynert (Ch4p) show largest effect size. Atrophy of the Ch4p correlates with reduced glucose metabolism in precuneus.
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Affiliation(s)
- Lukas Scheef
- Department of Radiology, University of Bonn, Germany; German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany.
| | - Michel J Grothe
- German Center for Neurodegenerative Diseases (DZNE), Rostock, Germany
| | - Alexander Koppara
- Department of Psychiatry, University of Bonn, Germany; German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
| | - Marcel Daamen
- Department of Radiology, University of Bonn, Germany; German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
| | - Henning Boecker
- Department of Radiology, University of Bonn, Germany; German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
| | - Hans Biersack
- Department of Nuclear Medicine, University of Bonn, Germany
| | - Hans H Schild
- Department of Radiology, University of Bonn, Germany
| | - Michael Wagner
- Department of Psychiatry, University of Bonn, Germany; German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
| | - Stefan Teipel
- German Center for Neurodegenerative Diseases (DZNE), Rostock, Germany; Department of Psychosomatic Medicine, University of Rostock, Rostock, Germany
| | - Frank Jessen
- German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany; Department of Psychiatry, Medical Faculty, University of Cologne, Germany
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Beauchet O, Launay CP, Sekhon H, Montembeault M, Allali G. Association of hippocampal volume with gait variability in pre-dementia and dementia stages of Alzheimer disease: Results from a cross-sectional study. Exp Gerontol 2018; 115:55-61. [PMID: 30447261 DOI: 10.1016/j.exger.2018.11.010] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Revised: 11/10/2018] [Accepted: 11/13/2018] [Indexed: 11/28/2022]
Abstract
BACKGROUND Decreased hippocampal volume is a biomarker of Alzheimer disease (AD). The association of hippocampal volume with gait variability across the spectrum of AD, especially in early stages, has been few studied. The study aims to examine the association of hippocampal volume with the coefficient of variation (CoV) of stride time in individuals with mild and moderate to severe subjective cognitive impairment (SCI), non-amnestic mild cognitive impairment (na-MCI), amnestic mild cognitive impairment (a-MCI), and mild to moderate AD dementia. METHODS 271 individuals (79 mild SCI, 68 moderate to severe SCI, 47 na-MCI, 42 a-MCI and 35 mild to moderate AD dementia) were included in this cross-sectional study. Hippocampal volume was quantified from a three-dimensional T1-weighted MRI. CoV of stride time was recorded at self-selected pace with an electronic walkway. Age, sex, body mass index, number of drugs daily taken, history of falls, walking speed, type of MRI scanner, total intracranial volume, and white matter volume abnormality were used as covariates. RESULTS Participants with moderate to severe SCI had a higher CoV of stride time compared to those with mild SCI and na-MCI (P < 0.010), and a higher hippocampal volume compared to other groups (P ≤ 0.001). Participants with moderate to severe SCI had increased hippocampal volume associated with increased CoV of stride time (coefficient of regression β = 0.750 with P = 0.041), while the other groups did not show any significant association. CONCLUSIONS A positive association between greater hippocampal volume (i.e., better brain morphological structure) and an increased stride time variability (i.e., worse gait performance) in individuals with moderate to severe SCI is reported. This association confirms the key role of the hippocampus in gait control and suggests an inefficient compensatory mechanism in early stages of pathological aging like AD.
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Affiliation(s)
- Olivier Beauchet
- Department of Medicine, Division of Geriatric Medicine, Sir Mortimer B. Davis - Jewish General Hospital and Lady Davis Institute for Medical Research, McGill University, Montreal, Quebec, Canada; Dr. Joseph Kaufmann Chair in Geriatric Medicine, Faculty of Medicine, McGill University, Montreal, Quebec, Canada; Centre of Excellence on Longevity of McGill Integrated University Health Network, Quebec, Canada; Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore.
| | - Cyrille P Launay
- Division of Geriatric Medicine and Geriatric Rehabilitation, Department of Medicine, Lausanne University Hospital, Switzerland
| | - Harmehr Sekhon
- Department of Medicine, Division of Geriatric Medicine, Sir Mortimer B. Davis - Jewish General Hospital and Lady Davis Institute for Medical Research, McGill University, Montreal, Quebec, Canada; Faculty of Medicine, Division of Experimental Medicine, McGill University, Montreal, Quebec, Canada
| | - Maxime Montembeault
- Centre de recherche de l'Institut Universitaire de Gériatrie de Montréal, Montréal, QC, Canada; Département de psychologie, Université de Montréal, Montréal, QC, Canada
| | - Gilles Allali
- Department of Neurology, Geneva University Hospital, University of Geneva, Switzerland
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Cespón J, Galdo-Álvarez S, Díaz F. Event-Related Potentials Reveal Altered Executive Control Activity in Healthy Elderly With Subjective Memory Complaints. Front Hum Neurosci 2018; 12:445. [PMID: 30487741 PMCID: PMC6246637 DOI: 10.3389/fnhum.2018.00445] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Accepted: 10/17/2018] [Indexed: 11/21/2022] Open
Abstract
Several studies reported that healthy elderly with subjective memory complaints (SMC) evolve to Alzheimer’s disease (AD) more frequently than elderly without subjective memory decline. In the present study, we investigated event-related potentials (ERPs) associated to executive control processes taking place during the performance of a Simon task with two irrelevant dimensions (stimulus position and direction pointed by an arrow) in healthy elderly divided in low and high SMC (LSMC, HSMC) groups. P300 was studied as a correlate of working memory. Medial frontal negativity (MFN) was studied as a correlate of conflict monitoring. Whereas the LSMC group showed interference from the stimulus position, participants with HSMC showed interference from both irrelevant dimensions. P300 latency was longer and P300 amplitude was lower when the stimulus position was incompatible with the required response but differences between both groups were not observed. MFN was not modulated in the LSMC group; however, the HSMC group showed larger MFN when the stimulus position and/or the direction pointed by the arrow were incompatible with the required response. These results suggest that participants with HSMC deployed greater conflict monitoring activity to maintain the performance when the target stimulus contained conflictive spatial information.
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Affiliation(s)
- Jesús Cespón
- Basque Centre on Cognition, Brain and Language, Donostia, Spain
| | - Santiago Galdo-Álvarez
- Department of Clinical Psychology and Psychobiology, University of Santiago de Compostela, Santiago de Compostela, Spain
| | - Fernando Díaz
- Department of Clinical Psychology and Psychobiology, University of Santiago de Compostela, Santiago de Compostela, Spain
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Subjective memory complaints and future depression in primary care patients: A four-year follow-up study. Gen Hosp Psychiatry 2018; 55:4-9. [PMID: 30176576 DOI: 10.1016/j.genhosppsych.2018.08.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Revised: 08/19/2018] [Accepted: 08/20/2018] [Indexed: 11/22/2022]
Abstract
OBJECTIVE To investigate the predictive value of subjective memory complaints (SMCs) for having a hospital-based diagnosis of a single depressive episode over a four-year follow-up period. METHODS A prospective register-based cohort study in general practice. All 17 practices in Inner city Copenhagen participated in the study. They had 40,865 registered patients, 2934 aged 65 years or older. Information on SMCs and socio-demographics was collected during two months at enrolment in primary care. Diagnoses of single depressive episodes were retrieved from the Danish Psychiatric Central Research Register. Cox proportional hazard regression models were used to examine risk factors for a hospital-based diagnosis of a single depressive episode. RESULTS 758 patients aged 65 years or older consulted their GP in October and November 2002. According to our definition, 177 (23%) had SMCs at enrolment, 12 (6.9%) of whom received a diagnosis of a single depressive episode within the follow-up period. In three multivariate models, SMCs were significantly associated with single depressive episodes. In the fully controlled model SMCs had a hazard ratio (HR) of 2.59 for receiving a subsequent depression diagnosis. CONCLUSIONS In an older general practice population, SMCs are associated with increased risk of receiving a hospital-based diagnosis of a single depressive episode.
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