1
|
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: 3] [Impact Index Per Article: 1.5] [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.
Collapse
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
| | | |
Collapse
|
2
|
Choe YM, Suh GH, Lee BC, Choi IG, Lee JH, Kim HS, Hwang J, Kim JW. Brain Amyloid Index as a Probable Marker Bridging Between Subjective Memory Complaint and Objective Cognitive Performance. Front Neurosci 2022; 16:912891. [PMID: 35860302 PMCID: PMC9289513 DOI: 10.3389/fnins.2022.912891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Accepted: 06/10/2022] [Indexed: 12/03/2022] Open
Abstract
Background The association between types of subjective memory complaint (SMC), poor objective cognitive performance, and brain Aβ deposition have been poorly understood. We investigated the association between types of SMC and objective global cognitive performance, then assessed whether this association is mediated by the brain amyloid prediction index (API). Methods In total, 173 non-demented older adults [63 cognitively normal (CN) and 110 mild cognitive impairment (MCI)] underwent comprehensive clinical assessments. Objective global cognitive performance and brain amyloid index were measured using the total score (TS) of the Consortium to Establish a Registry for Alzheimer’s Disease neuropsychological battery and API, respectively. In total, four items of SMC from the subjective memory complaints questionnaire (SMCQ) (SMCQ1: a feeling of memory problem; SMCQ2: the feeling of worse memory than 10 years ago; SMCQ3: the feeling of worse memory than others of similar age; or SMCQ4: the feeling of difficulty in everyday life) in global memory function were assessed. Results In non-demented and participants with MCI, SMCQ3-positive and SMCQ4-positive groups were associated with decreased TS. In participants with MCI, the SMCQ3-positive group was associated with increased API, and API was associated with decreased TS, but the SMCQ4-positive group did not. In addition, the association between the SMCQ3-positive group and poor TS disappeared when API was controlled as a covariate, indicating that API has a mediation effect. Conclusion The present findings suggest that SMC, a feeling of worse memory performance than others in a similar age group, in the older adults without dementia is associated with poor objective cognitive performance via increased brain amyloid index.
Collapse
Affiliation(s)
- Young Min Choe
- Department of Neuropsychiatry, Hallym University Dongtan Sacred Heart Hospital, Hwaseong, South Korea
- Department of Psychiatry, Hallym University College of Medicine, Chuncheon, South Korea
| | - Guk-Hee Suh
- Department of Neuropsychiatry, Hallym University Dongtan Sacred Heart Hospital, Hwaseong, South Korea
- Department of Psychiatry, Hallym University College of Medicine, Chuncheon, South Korea
| | - Boung Chul Lee
- Department of Psychiatry, Hallym University College of Medicine, Chuncheon, South Korea
- Department of Neuropsychiatry, Hallym University Hangang Sacred Heart Hospital, Seoul, South Korea
| | - Ihn-Geun Choi
- Department of Psychiatry, Hallym University College of Medicine, Chuncheon, South Korea
- Department of Psychiatry, Seoul W Psychiatric Office, Seoul, South Korea
| | - Jun Ho Lee
- Department of Neuropsychiatry, Seoul National University Hospital, Seoul, South Korea
| | - Hyun Soo Kim
- Department of Laboratory Medicine, Hallym University Dongtan Sacred Heart Hospital, Hwaseong, South Korea
| | - Jaeuk Hwang
- Department of Psychiatry, Soonchunhyang University Hospital, Seoul, South Korea
| | - Jee Wook Kim
- Department of Neuropsychiatry, Hallym University Dongtan Sacred Heart Hospital, Hwaseong, South Korea
- Department of Psychiatry, Hallym University College of Medicine, Chuncheon, South Korea
- *Correspondence: Jee Wook Kim,
| |
Collapse
|
3
|
Parker AF, Ohlhauser L, Scarapicchia V, Smart CM, Szoeke C, Gawryluk JR. A Systematic Review of Neuroimaging Studies Comparing Individuals with Subjective Cognitive Decline to Healthy Controls. J Alzheimers Dis 2022; 86:1545-1567. [DOI: 10.3233/jad-215249] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Background: Individuals with subjective cognitive decline (SCD) are hypothesized to be the earliest along the cognitive continuum between healthy aging and Alzheimer’s disease (AD), although more research is needed on this topic. Given that treatment approaches may be most effective pre-clinically, a primary objective of emerging research is to identify biological markers of SCD using neuroimaging methods. Objective: The current review aimed to comprehensively present the neuroimaging studies on SCD to date. Methods: PubMed and PsycINFO databases were searched for neuroimaging studies of individuals with SCD. Quality assessments were completed using the Appraisal tool for Cross-Sectional Studies. Results: In total, 62 neuroimaging studies investigating differences between participants with SCD and healthy controls were identified. Specifically, the number of studies were as follows: 36 MRI, 6 PET, 8 MRI/PET, 4 EEG, 7 MEG, and 1 SPECT. Across neuroimaging modalities, 48 of the 62 included studies revealed significant differences in brain structure and/or function between groups. Conclusion: Neuroimaging methods can identify differences between healthy controls and individuals with SCD. However, inconsistent results were found within and between neuroimaging modalities. Discrepancies across studies may be best accounted for by methodological differences, notably variable criteria for SCD, and differences in participant characteristics and risk factors for AD. Clinic based recruitment and cross-sectional study design were common and may bias the literature. Future neuroimaging investigations of SCD should consistently incorporate the standardized research criteria for SCD (as recommended by the SCD-Initiative), include more details of their SCD sample and their symptoms, and examine groups longitudinally.
Collapse
Affiliation(s)
- Ashleigh F. Parker
- Department of Psychology, University of Victoria, BC, Canada
- Institute on Aging and Lifelong Health, University of Victoria, BC, Canada
| | - Lisa Ohlhauser
- Department of Psychology, University of Victoria, BC, Canada
- Institute on Aging and Lifelong Health, University of Victoria, BC, Canada
| | - Vanessa Scarapicchia
- Department of Psychology, University of Victoria, BC, Canada
- Institute on Aging and Lifelong Health, University of Victoria, BC, Canada
| | - Colette M. Smart
- Department of Psychology, University of Victoria, BC, Canada
- Institute on Aging and Lifelong Health, University of Victoria, BC, Canada
| | - Cassandra Szoeke
- Department of Medicine, University of Melbourne, Melbourne, Australia
| | - Jodie R. Gawryluk
- Department of Psychology, University of Victoria, BC, Canada
- Institute on Aging and Lifelong Health, University of Victoria, BC, Canada
- Division of Medical Sciences, University of Victoria, BC, Canada
| |
Collapse
|
4
|
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: 4] [Impact Index Per Article: 1.0] [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.
Collapse
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
| |
Collapse
|
5
|
Wang X, Huang W, Su L, Xing Y, Jessen F, Sun Y, Shu N, Han Y. Neuroimaging advances regarding subjective cognitive decline in preclinical Alzheimer's disease. Mol Neurodegener 2020; 15:55. [PMID: 32962744 PMCID: PMC7507636 DOI: 10.1186/s13024-020-00395-3] [Citation(s) in RCA: 88] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Accepted: 08/07/2020] [Indexed: 12/15/2022] Open
Abstract
Subjective cognitive decline (SCD) is regarded as the first clinical manifestation in the Alzheimer’s disease (AD) continuum. Investigating populations with SCD is important for understanding the early pathological mechanisms of AD and identifying SCD-related biomarkers, which are critical for the early detection of AD. With the advent of advanced neuroimaging techniques, such as positron emission tomography (PET) and magnetic resonance imaging (MRI), accumulating evidence has revealed structural and functional brain alterations related to the symptoms of SCD. In this review, we summarize the main imaging features and key findings regarding SCD related to AD, from local and regional data to connectivity-based imaging measures, with the aim of delineating a multimodal imaging signature of SCD due to AD. Additionally, the interaction of SCD with other risk factors for dementia due to AD, such as age and the Apolipoprotein E (ApoE) ɛ4 status, has also been described. Finally, the possible explanations for the inconsistent and heterogeneous neuroimaging findings observed in individuals with SCD are discussed, along with future directions. Overall, the literature reveals a preferential vulnerability of AD signature regions in SCD in the context of AD, supporting the notion that individuals with SCD share a similar pattern of brain alterations with patients with mild cognitive impairment (MCI) and dementia due to AD. We conclude that these neuroimaging techniques, particularly multimodal neuroimaging techniques, have great potential for identifying the underlying pathological alterations associated with SCD. More longitudinal studies with larger sample sizes combined with more advanced imaging modeling approaches such as artificial intelligence are still warranted to establish their clinical utility.
Collapse
Affiliation(s)
- Xiaoqi Wang
- Department of Neurology, Xuanwu Hospital of Capital Medical University, Beijing, 100053, China.,Center of Alzheimer's Disease, Beijing Institute for Brain Disorders, Beijing, China
| | - Weijie Huang
- State Key Laboratory of Cognitive Neuroscience and Learning & IDG/McGovern Institute for Brain Research, Beijing Normal University, Beijing, 100875, China.,Center for Collaboration and Innovation in Brain and Learning Sciences, Beijing Normal University, Beijing, China.,Beijing Key Laboratory of Brain Imaging and Connectomics, Beijing Normal University, Beijing, China
| | - Li Su
- Department of Psychiatry, University of Cambridge, Cambridge, UK.,Sino-Britain Centre for Cognition and Ageing Research, Southwest University, Chongqing, China
| | - Yue Xing
- Radiological Sciences, Division of Clinical Neuroscience, University of Nottingham, Nottingham, UK
| | - Frank Jessen
- Department of Psychiatry and Psychotherapy, Medical Faculty, University of Cologne, 50937, Cologne, Germany.,German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany.,Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany
| | - Yu Sun
- Department of Neurology, Xuanwu Hospital of Capital Medical University, Beijing, 100053, China. .,Center of Alzheimer's Disease, Beijing Institute for Brain Disorders, Beijing, China.
| | - Ni Shu
- State Key Laboratory of Cognitive Neuroscience and Learning & IDG/McGovern Institute for Brain Research, Beijing Normal University, Beijing, 100875, China. .,Center for Collaboration and Innovation in Brain and Learning Sciences, Beijing Normal University, Beijing, China. .,Beijing Key Laboratory of Brain Imaging and Connectomics, Beijing Normal University, Beijing, China.
| | - Ying Han
- Department of Neurology, Xuanwu Hospital of Capital Medical University, Beijing, 100053, China. .,Center of Alzheimer's Disease, Beijing Institute for Brain Disorders, Beijing, China. .,National Clinical Research Center for Geriatric Disorders, Beijing, China.
| |
Collapse
|
6
|
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.
Collapse
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;
| |
Collapse
|
7
|
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.
Collapse
|
8
|
Verfaillie SCJ, Timmers T, Slot RER, van der Weijden CWJ, Wesselman LMP, Prins ND, Sikkes SAM, Yaqub M, Dols A, Lammertsma AA, Scheltens P, Ossenkoppele R, van Berckel BNM, van der Flier WM. Amyloid-β Load Is Related to Worries, but Not to Severity of Cognitive Complaints in Individuals With Subjective Cognitive Decline: The SCIENCe Project. Front Aging Neurosci 2019; 11:7. [PMID: 30760996 PMCID: PMC6362417 DOI: 10.3389/fnagi.2019.00007] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Accepted: 01/10/2019] [Indexed: 02/05/2023] Open
Abstract
Objective: Subjective cognitive decline (SCD) is associated with an increased risk of Alzheimer's Disease (AD). Early disease processes, such as amyloid-β aggregation measured with quantitative PET, may help to explain the phenotype of SCD. The aim of this study was to investigate whether quantitative amyloid-β load is associated with both self- and informant-reported cognitive complaints and memory deficit awareness in individuals with SCD. Methods: We included 106 SCD patients (mean ± SD age: 64 ± 8, 45%F) with 90 min dynamic [18F]florbetapir PET scans. We used the following questionnaires to assess SCD severity: cognitive change index (CCI, self and informant reports; 2 × 20 items), subjective cognitive functioning (SCF, four items), and five questions "Do you have complaints?" (yes/no) for memory, attention, organization and language), and "Does this worry you? (yes/no)." The Rivermead Behavioral Memory Test (RBMT)-Stories (immediate and delayed recall) was used to assess objective episodic memory. To investigate the level of self-awareness, we calculated a memory deficit awareness index (Z-transformed (inverted self-reported CCI minus episodic memory); higher index, heightened self-awareness) and a self-proxy index (Z-transformed self- minus informant-reported CCI). Mean cortical [18F]florbetapir binding potential (BPND) was derived from the PET data. Logistic and linear regression analyses, adjusted for age, sex, education, and depressive symptoms, were used to investigate associations between BPND and measures of SCD. Results: Higher mean cortical [18F]florbetapir BPND was associated with SCD-related worries (odds ratio = 1.76 [95%CI = 1.07 ± 2.90]), but not with other SCD questionnaires (informant and self-report CCI or SCF, total scores or individual items, all p > 0.05). In addition, higher mean cortical [18F]florbetapir BPND was associated with a higher memory deficit awareness index (Beta = 0.55), with an interaction between BPND and education (p = 0.002). There were no associations between [18F]florbetapir BPND and self-proxy index (Beta = 0.11). Conclusion: Amyloid-β deposition was associated with SCD-related worries and heightened memory deficit awareness (i.e., hypernosognosia), but not with severity of cognitive complaints. Our findings indicate that worries about self-perceived decline may reflect an early symptom of amyloid-β related pathology rather than subjective cognitive functioning.
Collapse
Affiliation(s)
- Sander C J Verfaillie
- Department of Neurology and Alzheimer Center, Amsterdam University Medical Center, Vrije Universiteit Amsterdam, Amsterdam, Netherlands.,Department of Radiology and Nuclear Medicine, Amsterdam Neuroscience, Amsterdam University Medical Center, Vrije Universiteit Amsterdam, Amsterdam, Netherlands.,Amsterdam Neuroscience, Amsterdam, Netherlands
| | - Tessa Timmers
- Department of Neurology and Alzheimer Center, Amsterdam University Medical Center, Vrije Universiteit Amsterdam, Amsterdam, Netherlands.,Department of Radiology and Nuclear Medicine, Amsterdam Neuroscience, Amsterdam University Medical Center, Vrije Universiteit Amsterdam, Amsterdam, Netherlands.,Amsterdam Neuroscience, Amsterdam, Netherlands
| | - Rosalinde E R Slot
- Department of Neurology and Alzheimer Center, Amsterdam University Medical Center, Vrije Universiteit Amsterdam, Amsterdam, Netherlands.,Amsterdam Neuroscience, Amsterdam, Netherlands
| | - Chris W J van der Weijden
- Department of Radiology and Nuclear Medicine, Amsterdam Neuroscience, Amsterdam University Medical Center, Vrije Universiteit Amsterdam, Amsterdam, Netherlands.,Amsterdam Neuroscience, Amsterdam, Netherlands
| | - Linda M P Wesselman
- Department of Neurology and Alzheimer Center, Amsterdam University Medical Center, Vrije Universiteit Amsterdam, Amsterdam, Netherlands.,Amsterdam Neuroscience, Amsterdam, Netherlands
| | - Niels D Prins
- Department of Neurology and Alzheimer Center, Amsterdam University Medical Center, Vrije Universiteit Amsterdam, Amsterdam, Netherlands.,Amsterdam Neuroscience, Amsterdam, Netherlands
| | - Sietske A M Sikkes
- Department of Neurology and Alzheimer Center, Amsterdam University Medical Center, Vrije Universiteit Amsterdam, Amsterdam, Netherlands.,Amsterdam Neuroscience, Amsterdam, Netherlands.,Department of Epidemiology and Biostatistics, Amsterdam Neuroscience, Amsterdam University Medical Center, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Maqsood Yaqub
- Department of Radiology and Nuclear Medicine, Amsterdam Neuroscience, Amsterdam University Medical Center, Vrije Universiteit Amsterdam, Amsterdam, Netherlands.,Amsterdam Neuroscience, Amsterdam, Netherlands
| | - Annemiek Dols
- Department of Neurology and Alzheimer Center, Amsterdam University Medical Center, Vrije Universiteit Amsterdam, Amsterdam, Netherlands.,Amsterdam Neuroscience, Amsterdam, Netherlands.,Department of Old Age Psychiatry, Amsterdam Neuroscience, GGZ inGeest, Amsterdam University Medical Center, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Adriaan A Lammertsma
- Department of Radiology and Nuclear Medicine, Amsterdam Neuroscience, Amsterdam University Medical Center, Vrije Universiteit Amsterdam, Amsterdam, Netherlands.,Amsterdam Neuroscience, Amsterdam, Netherlands
| | - Philip Scheltens
- Department of Neurology and Alzheimer Center, Amsterdam University Medical Center, Vrije Universiteit Amsterdam, Amsterdam, Netherlands.,Amsterdam Neuroscience, Amsterdam, Netherlands
| | - Rik Ossenkoppele
- Department of Neurology and Alzheimer Center, Amsterdam University Medical Center, Vrije Universiteit Amsterdam, Amsterdam, Netherlands.,Amsterdam Neuroscience, Amsterdam, Netherlands.,Clinical Memory Research Unit, Lund University, Malmö, Sweden
| | - Bart N M van Berckel
- Department of Radiology and Nuclear Medicine, Amsterdam Neuroscience, Amsterdam University Medical Center, Vrije Universiteit Amsterdam, Amsterdam, Netherlands.,Amsterdam Neuroscience, Amsterdam, Netherlands
| | - Wiesje M van der Flier
- Department of Neurology and Alzheimer Center, Amsterdam University Medical Center, Vrije Universiteit Amsterdam, Amsterdam, Netherlands.,Amsterdam Neuroscience, Amsterdam, Netherlands.,Department of Epidemiology and Biostatistics, Amsterdam Neuroscience, Amsterdam University Medical Center, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| |
Collapse
|
9
|
Kim JW, Byun MS, Yi D, Lee JH, Ko K, Jung G, Lee DY. Vascular risk modulates the relationship between cerebral amyloid deposition and subjective memory complaints. Neuropsychiatr Dis Treat 2019; 15:637-645. [PMID: 30880988 PMCID: PMC6404991 DOI: 10.2147/ndt.s192231] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
PURPOSE We aimed to investigate the relationships of cerebral amyloid beta (Aβ) deposition and neurodegeneration (ND) with subjective memory complaints (SMCs) in cognitively normal (CN) individuals, focusing specially on the modulating effects of vascular risk (VR) on those relationships. PARTICIPANTS AND METHODS A total of 230 CN elderly individuals underwent comprehensive clinical assessments including the Subjective Memory Complaints Questionnaire (SMCQ), VR assessment, and multimodal brain imaging including [11C] Pittsburgh compound B positron emission tomography (PET), [18F] fluorodeoxyglucose-PET, and magnetic resonance imaging. RESULTS We found a significant overall positive association between cerebral Aβ retention and SMCQ score. In addition, we found a significant cerebral Aβ retention × VR interaction effect on the SMCQ score. Subgroup analyses showed that the Aβ-SMC association was found only in VR-negative, and not in VR-positive, individuals. We found no relationship between ND and SMCQ. CONCLUSION Our findings suggest that SMC in CN elderly individuals reflects early accumulation of Aβ in the brain. Given the modulating effect of VR on the Aβ-SMC relationship, SMC can be used as a meaningful marker of early Aβ deposition in individuals without VR.
Collapse
Affiliation(s)
- Jee Wook Kim
- Department of Neuropsychiatry, Hallym University Dongtan Sacred Heart Hospital, Hwaseong, Republic of Korea.,Department of Psychiatry, Hallym University College of Medicine, Chuncheon, Republic of Korea
| | - Min Soo Byun
- Institute of Human Behavioral Medicine, Medical Research Center, Seoul National University, Seoul, Republic of Korea,
| | - Dahyun Yi
- Institute of Human Behavioral Medicine, Medical Research Center, Seoul National University, Seoul, Republic of Korea,
| | - Jun Ho Lee
- Department of Neuropsychiatry, Seoul National University Hospital, Seoul, Republic of Korea,
| | - Kang Ko
- Department of Neuropsychiatry, Seoul National University Hospital, Seoul, Republic of Korea,
| | - Gijung Jung
- Department of Nursing, Graduate School, Kyung Hee University, Seoul, Republic of Korea
| | - Dong Young Lee
- Institute of Human Behavioral Medicine, Medical Research Center, Seoul National University, Seoul, Republic of Korea, .,Department of Neuropsychiatry, Seoul National University Hospital, Seoul, Republic of Korea, .,Department of Psychiatry, Seoul National University College of Medicine, Seoul, Republic of Korea,
| |
Collapse
|
10
|
|
11
|
Li K, Luo X, Zeng Q, Jiaerken Y, Xu X, Huang P, Shen Z, Xu J, Wang C, Zhou J, Zhang MM. Aberrant functional connectivity network in subjective memory complaint individuals relates to pathological biomarkers. Transl Neurodegener 2018; 7:27. [PMID: 30377523 PMCID: PMC6196458 DOI: 10.1186/s40035-018-0130-z] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2018] [Accepted: 09/20/2018] [Indexed: 11/10/2022] Open
Abstract
Background Individuals with subjective memory complaints (SMC) feature a higher risk of cognitive decline and clinical progression of Alzheimer's disease (AD). However, the pathological mechanism underlying SMC remains unclear. We aimed to assess the intrinsic connectivity network and its relationship with AD-related pathologies in SMC individuals. Methods We included 44 SMC individuals and 40 normal controls who underwent both resting-state functional MRI and positron emission tomography (PET). Based on graph theory approaches, we detected local and global functional connectivity across the whole brain by using degree centrality (DC) and eigenvector centrality (EC) respectively. Additionally, we analyzed amyloid deposition and tauopathy via florbetapir-PET imaging and cerebrospinal fluid (CSF) data. The voxel-wise two-sample T-test analysis was used to examine between-group differences in the intrinsic functional network and cerebral amyloid deposition. Then, we correlated these network metrics with pathological results. Results The SMC individuals showed higher DC in the bilateral hippocampus (HP) and left fusiform gyrus and lower DC in the inferior parietal region than controls. Across all subjects, the DC of the bilateral HP and left fusiform gyrus was positively associated with total tau and phosphorylated tau181. However, no significant between-group difference existed in EC and cerebral amyloid deposition. Conclusion We found impaired local, but not global, intrinsic connectivity networks in SMC individuals. Given the relationships between DC value and tau level, we hypothesized that functional changes in SMC individuals might relate to pathological biomarkers.
Collapse
Affiliation(s)
- Kaicheng Li
- 1Department of Radiology, 2nd Affiliated Hospital of Zhejiang University School of Medicine, No.88 Jie-fang Road, Shang-cheng District, Hangzhou, 310009 China
| | - Xiao Luo
- 1Department of Radiology, 2nd Affiliated Hospital of Zhejiang University School of Medicine, No.88 Jie-fang Road, Shang-cheng District, Hangzhou, 310009 China
| | - Qingze Zeng
- 1Department of Radiology, 2nd Affiliated Hospital of Zhejiang University School of Medicine, No.88 Jie-fang Road, Shang-cheng District, Hangzhou, 310009 China
| | - Yeerfan Jiaerken
- 1Department of Radiology, 2nd Affiliated Hospital of Zhejiang University School of Medicine, No.88 Jie-fang Road, Shang-cheng District, Hangzhou, 310009 China
| | - Xiaojun Xu
- 1Department of Radiology, 2nd Affiliated Hospital of Zhejiang University School of Medicine, No.88 Jie-fang Road, Shang-cheng District, Hangzhou, 310009 China
| | - Peiyu Huang
- 1Department of Radiology, 2nd Affiliated Hospital of Zhejiang University School of Medicine, No.88 Jie-fang Road, Shang-cheng District, Hangzhou, 310009 China
| | - Zhujing Shen
- 1Department of Radiology, 2nd Affiliated Hospital of Zhejiang University School of Medicine, No.88 Jie-fang Road, Shang-cheng District, Hangzhou, 310009 China
| | - Jingjing Xu
- 1Department of Radiology, 2nd Affiliated Hospital of Zhejiang University School of Medicine, No.88 Jie-fang Road, Shang-cheng District, Hangzhou, 310009 China
| | - Chao Wang
- 1Department of Radiology, 2nd Affiliated Hospital of Zhejiang University School of Medicine, No.88 Jie-fang Road, Shang-cheng District, Hangzhou, 310009 China
| | - Jiong Zhou
- Department of Neurology, 2nd Affiliated Hospital of Zhejiang University School of Medicine, Zhejiang, China
| | - Min-Ming Zhang
- 1Department of Radiology, 2nd Affiliated Hospital of Zhejiang University School of Medicine, No.88 Jie-fang Road, Shang-cheng District, Hangzhou, 310009 China
| | | |
Collapse
|
12
|
Smaller medial temporal lobe volumes in individuals with subjective cognitive decline and biomarker evidence of Alzheimer's disease—Data from three memory clinic studies. Alzheimers Dement 2018; 15:185-193. [DOI: 10.1016/j.jalz.2018.09.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Revised: 07/30/2018] [Accepted: 09/04/2018] [Indexed: 12/11/2022]
|
13
|
Lazarou I, Adam K, Georgiadis K, Tsolaki A, Nikolopoulos S, Yiannis Kompatsiaris I, Tsolaki M. Can a Novel High-Density EEG Approach Disentangle the Differences of Visual Event Related Potential (N170), Elicited by Negative Facial Stimuli, in People with Subjective Cognitive Impairment? J Alzheimers Dis 2018; 65:543-575. [PMID: 30103320 DOI: 10.3233/jad-180223] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
BACKGROUND Studies on subjective cognitive impairment (SCI) and neural activation report controversial results. OBJECTIVE To evaluate the ability to disentangle the differences of visual N170 ERP, generated by facial stimuli (Anger & Fear) as well as the cognitive deterioration of SCI, mild cognitive impairment (MCI), and Alzheimer's disease (AD) compared to healthy controls (HC). METHOD 57 people took part in this study. Images corresponding to facial stimuli of "Anger" and "Fear" were presented to 12 HC, 14 SCI, 17 MCI and 14 AD participants. EEG data were recorded by using a HD-EEG HydroCel with 256 channels. RESULTS Results showed that the amplitude of N170 can contribute in distinguishing the SCI group, since statistically significant differences were observed with the HC (p < 0.05) and the MCI group from HC (p < 0.001), as well as AD from HC (p = 0.05) during the processing of facial stimuli. Noticeable differences were also observed in the topographic distribution of the N170 amplitude, while localization analysis by using sLORETA images confirmed the activation of superior, middle-temporal, and frontal lobe brain regions. Finally, in the case of "Fear", SCI and HC demonstrated increased activation in the orbital and inferior frontal gyrus, respectively, MCI in the inferior temporal gyrus, and AD in the lingual gyrus. CONCLUSION These preliminary findings suggest that the amplitude of N170 elicited after negative facial stimuli could be modulated by the decline related to pathological cognitive aging and can contribute in distinguishing HC from SCI, MCI, and AD.
Collapse
Affiliation(s)
- Ioulietta Lazarou
- Information Technologies Institute, Centre for Research and Technology Hellas, Thessaloniki, Macedonia, Greece.,1st Department of Neurology, G.H. "AHEPA", School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Macedonia, Greece
| | - Katerina Adam
- Information Technologies Institute, Centre for Research and Technology Hellas, Thessaloniki, Macedonia, Greece
| | - Kostas Georgiadis
- Information Technologies Institute, Centre for Research and Technology Hellas, Thessaloniki, Macedonia, Greece.,Informatics Department, Aristotle University of Thessaloniki, Thessaloniki, Macedonia, Greece
| | - Anthoula Tsolaki
- Information Technologies Institute, Centre for Research and Technology Hellas, Thessaloniki, Macedonia, Greece.,Laboratory of Medical Physic, Faculty of Health Sciences, School of Medicine, Aristotle University of Thessaloniki, Thessaloniki, Macedonia, Greece
| | - Spiros Nikolopoulos
- Information Technologies Institute, Centre for Research and Technology Hellas, Thessaloniki, Macedonia, Greece
| | | | - Magda Tsolaki
- Information Technologies Institute, Centre for Research and Technology Hellas, Thessaloniki, Macedonia, Greece.,1st Department of Neurology, G.H. "AHEPA", School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Macedonia, Greece.,Greek Alzheimer's Association and Related Disorders (GAADRD), Thessaloniki, Macedonia, Greece
| |
Collapse
|
14
|
Zhang J, Zhou W, Cassidy RM, Su H, Su Y, Zhang X. Risk factors for amyloid positivity in older people reporting significant memory concern. Compr Psychiatry 2018; 80:126-131. [PMID: 29091778 DOI: 10.1016/j.comppsych.2017.09.015] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Revised: 09/29/2017] [Accepted: 09/29/2017] [Indexed: 01/08/2023] Open
Abstract
OBJECTIVE The goal of this study is to identify risk factors for the presence of amyloid accumulation in the brains of patients reporting subjective cognitive decline (SCD). Identifying such risk factors will help better identify patients who ought to receive neuroimaging studies to confirm plaque presence and begin intervention, as well as enhancing the study of the pathogenesis of Alzheimer's disease. METHODS Ninety-nine SCD participants (72.2±5.6years, 57.6% female) from the Alzheimer's Disease Neuroimaging Initiative (ADNI) underwent florbetapir PET. Logistic regression analysis was conducted to examine the relationship between the presence of an increased amyloid signal (amyloid positivity) and several potential risk factors, including: demographics, APOE ε4 genotype, family history of dementia, history of hypertension, history of cigarettes smoking, cognitive function and depressive symptoms. RESULTS Being female was a significant risk factor for amyloid positivity (OR=4.915, 95% CI=1.709-14.139), as was being an APOE ε4 carrier (OR=2.985, 95% CI=1.084-8.219) and having a history of cigarette smoking (OR=4.091, 95% CI=1.483-11.285). CONCLUSION Our study demonstrates that female gender, APOE ε4 genotype, and history of cigarettes smoking are associated with amyloid positivity in patients with SCD.
Collapse
Affiliation(s)
- Jie Zhang
- Department of Neurology, Zhongshan Hospital, Fudan University, Shanghai, China.
| | - Wenjun Zhou
- Department of Respiratory Medicine, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Ryan M Cassidy
- Department of Psychiatry and Behavioral Sciences, The University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Hang Su
- Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yindan Su
- The Affiliated High School to Hangzhou Normal University, Hangzhou, China
| | - Xiangyang Zhang
- Department of Psychiatry and Behavioral Sciences, The University of Texas Health Science Center at Houston, Houston, TX, USA; Beijing HuiLongGuan Hospital, Peking University, Beijing, China.
| | | |
Collapse
|
15
|
Evidence of Hippocampal Structural Alterations in Gulf War Veterans With Predicted Exposure to the Khamisiyah Plume. J Occup Environ Med 2017; 59:923-929. [DOI: 10.1097/jom.0000000000001082] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
|
16
|
Subjective Cognitive Decline and Alzheimer's Disease Spectrum Disorder. Dement Neurocogn Disord 2017; 16:40-47. [PMID: 30906369 PMCID: PMC6427955 DOI: 10.12779/dnd.2017.16.2.40] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Revised: 06/12/2017] [Accepted: 06/12/2017] [Indexed: 12/22/2022] Open
Abstract
Subjective cognitive decline (SCD) represents subjective complaints about cognitive decline in the absence of objective impairment in neuropsychological tests. Recently, growing evidence has suggested that SCD might be the first symptomatic stage of Alzheimer's disease (AD) spectrum disorders. However, SCD is a heterogeneous condition mixed with AD and non-AD related conditions. Hence, refinement of evidence from previous reports and standardization of the concept about SCD are needed to define appropriate target population with AD pathology. In this article, we review previous studies involving subjects with SCD, the new proposed research criteria, and characteristics of SCD in the aspect of preclinical AD. Biomarker status of SCD is also addressed. Future researches on SCD require a longitudinal follow-up with sufficient biomarker studies and proper outcome measures.
Collapse
|
17
|
Rabin LA, Smart CM, Amariglio RE. Subjective Cognitive Decline in Preclinical Alzheimer's Disease. Annu Rev Clin Psychol 2017; 13:369-396. [DOI: 10.1146/annurev-clinpsy-032816-045136] [Citation(s) in RCA: 248] [Impact Index Per Article: 35.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Laura A. Rabin
- Department of Psychology, Brooklyn College and The Graduate Center of the City University of New York, Brooklyn, New York 11210
- Department of Neurology, Albert Einstein College of Medicine, Bronx, New York 10461
| | - Colette M. Smart
- Department of Psychology, University of Victoria, Victoria, British Columbia V8W 2Y2, Canada
- Institute on Aging and Lifelong Health, University of Victoria, Victoria, British Columbia V8P 2Y2, Canada
| | - Rebecca E. Amariglio
- Department of Neurology and Center for Alzheimer Research and Treatment, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts 02115
- Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts 02114
| |
Collapse
|
18
|
Perrotin A, La Joie R, de La Sayette V, Barré L, Mézenge F, Mutlu J, Guilloteau D, Egret S, Eustache F, Chételat G. Subjective cognitive decline in cognitively normal elders from the community or from a memory clinic: Differential affective and imaging correlates. Alzheimers Dement 2016; 13:550-560. [PMID: 27693187 DOI: 10.1016/j.jalz.2016.08.011] [Citation(s) in RCA: 120] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Revised: 08/05/2016] [Accepted: 08/17/2016] [Indexed: 01/21/2023]
Abstract
INTRODUCTION Subjective cognitive decline (SCD) could indicate preclinical Alzheimer's disease, but the existing literature is confounded by heterogeneous approaches to studying SCD. We assessed the differential cognitive, affective, and neuroimaging correlates of two aspects of SCD: reporting high cognitive difficulties on a self-rated questionnaire versus consulting at a memory clinic. METHODS We compared 28 patients from a memory clinic with isolated SCD, 35 community-recruited elders with similarly high levels of self-reported cognitive difficulties, and 35 community-recruited controls with low self-reported cognitive difficulties. RESULTS Increased anxiety and amyloid β deposition were observed in both groups with high self-reported difficulties, whereas subclinical depression and (hippocampal) atrophy were specifically associated with medical help seeking. Cognitive tests showed no group differences. DISCUSSION These results further validate the concept of SCD in both community- and clinic-based groups. Yet, recruitment methods influence associated biomarkers and affective symptomatology, highlighting the heterogeneous nature of SCD depending on study characteristics.
Collapse
Affiliation(s)
- Audrey Perrotin
- INSERM, U1077, Caen, France; Université de Caen Normandie, UMR-S1077, Caen, France; Ecole Pratique des Hautes Etudes, UMR-S1077, Caen, France; CHU de Caen, U1077, Caen, France
| | - Renaud La Joie
- INSERM, U1077, Caen, France; Université de Caen Normandie, UMR-S1077, Caen, France; Ecole Pratique des Hautes Etudes, UMR-S1077, Caen, France; CHU de Caen, U1077, Caen, France.
| | - Vincent de La Sayette
- INSERM, U1077, Caen, France; Université de Caen Normandie, UMR-S1077, Caen, France; Ecole Pratique des Hautes Etudes, UMR-S1077, Caen, France; CHU de Caen, Service de Neurologie, Caen, France
| | - Louisa Barré
- Université de Caen Normandie, UMR-S1077, Caen, France; CEA, DRF/I2BM, LDM-TEP Group, Caen, France; CNRS, UMR ISTCT 6301, LDM-TEP Group, Caen, France
| | - Florence Mézenge
- INSERM, U1077, Caen, France; Université de Caen Normandie, UMR-S1077, Caen, France; Ecole Pratique des Hautes Etudes, UMR-S1077, Caen, France; CHU de Caen, U1077, Caen, France
| | - Justine Mutlu
- INSERM, U1077, Caen, France; Université de Caen Normandie, UMR-S1077, Caen, France; Ecole Pratique des Hautes Etudes, UMR-S1077, Caen, France; CHU de Caen, U1077, Caen, France
| | - Denis Guilloteau
- INSERM U930, Université François Rabelais de Tours, CHRU de Tours, Tours, France
| | - Stéphanie Egret
- INSERM, U1077, Caen, France; Université de Caen Normandie, UMR-S1077, Caen, France; Ecole Pratique des Hautes Etudes, UMR-S1077, Caen, France; CHU de Caen, U1077, Caen, France
| | - Francis Eustache
- INSERM, U1077, Caen, France; Université de Caen Normandie, UMR-S1077, Caen, France; Ecole Pratique des Hautes Etudes, UMR-S1077, Caen, France; CHU de Caen, U1077, Caen, France
| | - Gaël Chételat
- INSERM, U1077, Caen, France; Université de Caen Normandie, UMR-S1077, Caen, France; Ecole Pratique des Hautes Etudes, UMR-S1077, Caen, France; CHU de Caen, U1077, Caen, France
| |
Collapse
|
19
|
Abstract
Subjective cognitive impairment (SCI) refers to concerns regarding one's cognitive functioning in the absence of objective evidence of impairment, and may represent an early stage of Alzheimer's disease. However, as not all individuals with SCI cognitively decline, there is growing interest in the early identification of those individuals with SCI who are most at risk of developing Alzheimer's disease. One promising method of early identification involves the use of biomarkers that are known to be associated with the pathophysiology of the disease; in particular, markers of amyloid and tau accumulation. While there has been substantial research on amyloid and tau biomarkers in the context of mild cognitive impairment (MCI), only recently has attention shifted to SCI, which may represent an even earlier stage in the disease course. The purpose of this paper is to qualitatively review the literature on amyloid and tau biomarkers in SCI. A brief discussion of non-amyloid/tau biomarkers is also included. Not surprisingly, we found that amyloid and tau biomarker profiles become increasingly abnormal from SCI, to MCI, to Alzheimer's disease. Additionally, although amyloid and tau biomarkers appear to be unable to differentiate between SCI and healthy controls, there is some evidence to suggest that they may be able to differentiate between those individuals with SCI who cognitively decline over time and those who do not. While this finding has potential clinical implications, achieving optimal predictive value will likely require further research into the use of numerous biomarkers in combination.
Collapse
|
20
|
Modabbernia A, Velthorst E, Gennings C, De Haan L, Austin C, Sutterland A, Mollon J, Frangou S, Wright R, Arora M, Reichenberg A. Early-life metal exposure and schizophrenia: A proof-of-concept study using novel tooth-matrix biomarkers. Eur Psychiatry 2016; 36:1-6. [PMID: 27311101 DOI: 10.1016/j.eurpsy.2016.03.006] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Revised: 03/15/2016] [Accepted: 03/21/2016] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Despite evidence for the effects of metals on neurodevelopment, the long-term effects on mental health remain unclear due to methodological limitations. Our objective was to determine the feasibility of studying metal exposure during critical neurodevelopmental periods and to explore the association between early-life metal exposure and adult schizophrenia. METHODS We analyzed childhood-shed teeth from nine individuals with schizophrenia and five healthy controls. We investigated the association between exposure to lead (Pb(2+)), manganese (Mn(2+)), cadmium (Cd(2+)), copper (Cu(2+)), magnesium (Mg(2+)), and zinc (Zn(2+)), and schizophrenia, psychotic experiences, and intelligence quotient (IQ). We reconstructed the dose and timing of early-life metal exposures using laser ablation inductively coupled plasma mass spectrometry. RESULTS We found higher early-life Pb(2+) exposure among patients with schizophrenia than controls. The differences in log Mn(2+) and log Cu(2+) changed relatively linearly over time to postnatal negative values. There was a positive correlation between early-life Pb(2+) levels and psychotic experiences in adulthood. Moreover, we found a negative correlation between Pb(2+) levels and adult IQ. CONCLUSIONS In our proof-of-concept study, using tooth-matrix biomarker that provides direct measurement of exposure in the fetus and newborn, we provide support for the role of metal exposure during critical neurodevelopmental periods in psychosis.
Collapse
Affiliation(s)
- A Modabbernia
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, United States; Seaver Center for Autism Research and Treatment, Icahn School of Medicine at Mount Sinai, New York, United States; Department of Preventive Medicine, Icahn School of Medicine at Mount Sinai, New York, United States.
| | - E Velthorst
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, United States; Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - C Gennings
- Department of Preventive Medicine, Icahn School of Medicine at Mount Sinai, New York, United States
| | - L De Haan
- Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - C Austin
- Department of Preventive Medicine, Icahn School of Medicine at Mount Sinai, New York, United States
| | - A Sutterland
- Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - J Mollon
- Department of Psychosis Studies, Institute of Psychiatry, Psychology, and Neuroscience, King's College London, London, England, United Kingdom
| | - S Frangou
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, United States; Psychosis Research Program, Icahn School of Medicine at Mount Sinai, New York, United States
| | - R Wright
- Department of Preventive Medicine, Icahn School of Medicine at Mount Sinai, New York, United States
| | - M Arora
- Department of Preventive Medicine, Icahn School of Medicine at Mount Sinai, New York, United States
| | - A Reichenberg
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, United States; Seaver Center for Autism Research and Treatment, Icahn School of Medicine at Mount Sinai, New York, United States; Department of Preventive Medicine, Icahn School of Medicine at Mount Sinai, New York, United States; Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, United States
| |
Collapse
|
21
|
Niwa F, Kondo M, Sakurada K, Nakagawa M, Imanishi J, Mizuno T. Regional Cerebral Blood Flow in [123]I-IMP Single-photon Emission Computed Tomography and the Wechsler Memory Scale-revised in Nondemented Elderly Subjects with Subjective Cognitive Impairment. Intern Med 2016; 55:3571-3578. [PMID: 27980255 PMCID: PMC5283955 DOI: 10.2169/internalmedicine.55.6725] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Objective Regional cerebral blood flow (rCBF) imaging with single-photon emission computed tomography (SPECT) is useful in the early diagnosis of dementia. We aimed to investigate the association between the rCBF and various domains related to the memory function in elderly subjects with subjective cognitive impairment (SCI). Methods Thirty-two subjects with SCI were included in the present study. Patients with dementia and mild cognitive impairment (MCI) were excluded based on the presence of logical memory impairment. N-isopropyl-p-[123I]-iodoamphetamine SPECT was performed and Wechsler Memory Scale-Revised (WMS-R) was administered to all subjects (mean age, 68.4 years; average Mini-Mental State Examination score, 27.6). The SPECT results were analyzed using the easy Z-score imaging system and the voxel-based stereotactic extraction estimation method. Correlation analyses were performed to investigate the correlation between the mean positive Z-scores in the decrease of the rCBF and the WMS-R indices. Results The SPECT study indicated marked hypoperfusion in some areas, including the bilateral temporal areas, the caudate, and the thalamus, in these subjects in comparison to the normal database. The decrease in the rCBF that was observed in several regions, including the left precuneus and left inferior frontal gyrus (LIFG), showed a significant negative correlation with several indices of the memory function, particularly visual memory. Conclusion The regional hypoperfusion observed in the study using the voxel-based stereotactic extraction estimation method suggest that the regional cerebral dysfunction is associated with the memory function of patients with SCI, even though the subjects in the present study were cognitively intact. The correlation analysis with the WMS-R suggested the contribution of the LIFG to the memory function and indicated the significance of visual memory dysfunction in the neuropsychological assessment to determine the stage of SCI.
Collapse
Affiliation(s)
- Fumitoshi Niwa
- Department of Neurology and Gerontology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Japan
| | | | | | | | | | | |
Collapse
|
22
|
Subjective memory complaints, cortical thinning, and cognitive dysfunction in middle-aged adults at risk for AD. ALZHEIMER'S & DEMENTIA: DIAGNOSIS, ASSESSMENT & DISEASE MONITORING 2015; 1:33-40. [PMID: 25938132 PMCID: PMC4412027 DOI: 10.1016/j.dadm.2014.11.010] [Citation(s) in RCA: 77] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Background Subjective memory complaints (SMCs) represent an individual's perception of subtle changes in memory in the absence of objective impairment in memory. However, it is not fully known whether persons with SMCs harbor brain alterations related to Alzheimer's disease (AD) or whether they indeed demonstrate poorer cognitive performance. Methods The participants were 261 middle-age adults (mean age 54.30 years) enrolled in the Wisconsin Registry for Alzheimer's Prevention, a registry of cognitively normal adults at risk of AD. They answered a question pertaining to subjective memory, completed a comprehensive neuropsychological examination, and subsequently underwent a volumetric magnetic resonance imaging scan. Cortical thickness measurements were derived from 10 a priori regions of interest involved in AD. Analyses of covariance were conducted to investigate the group differences in cortical thickness and neuropsychological measures. Results Compared with individuals without SMCs, those with SMCs had significant cortical thinning in the entorhinal, fusiform, posterior cingulate, and inferior parietal cortices and significantly reduced amygdala volume. Similarly, those with SMCs had significantly lower test scores on measures of Immediate Memory, Verbal Learning & Memory, and Verbal Ability. Additional adjustment for depressive symptoms (which differed between the groups) attenuated only the findings for the entorhinal cortex (P = .061) and Verbal Ability (P = .076). Conclusion At-risk, cognitively healthy individuals with SMCs exhibit cortical thinning in brain regions affected by AD and poorer performance on objective memory tests. These findings suggest that, in some individuals, SMCs might represent the earliest stages of AD.
Collapse
|
23
|
van Harten AC, Visser PJ, Pijnenburg YA, Teunissen CE, Blankenstein MA, Scheltens P, van der Flier WM. Cerebrospinal fluid Aβ42 is the best predictor of clinical progression in patients with subjective complaints. Alzheimers Dement 2012; 9:481-7. [PMID: 23232269 DOI: 10.1016/j.jalz.2012.08.004] [Citation(s) in RCA: 124] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2011] [Revised: 07/27/2012] [Accepted: 08/16/2012] [Indexed: 10/27/2022]
Affiliation(s)
- Argonde C. van Harten
- Alzheimer Center; VU University Medical Center; Amsterdam The Netherlands
- Department of Neurology; VU University Medical Center; Amsterdam The Netherlands
| | - Pieter Jelle Visser
- Alzheimer Center; VU University Medical Center; Amsterdam The Netherlands
- Department of Neurology; VU University Medical Center; Amsterdam The Netherlands
- Department of Psychiatry and Neuropsychology/Alzheimer Center Limburg; School for Mental Health and Neurosciences, Maastricht University Medical Center; Maastricht The Netherlands
| | - Yolande A.L. Pijnenburg
- Alzheimer Center; VU University Medical Center; Amsterdam The Netherlands
- Department of Neurology; VU University Medical Center; Amsterdam The Netherlands
| | - Charlotte E. Teunissen
- Department of Clinical Chemistry; VU University Medical Center; Amsterdam The Netherlands
| | | | - Philip Scheltens
- Alzheimer Center; VU University Medical Center; Amsterdam The Netherlands
- Department of Neurology; VU University Medical Center; Amsterdam The Netherlands
| | - Wiesje M. van der Flier
- Alzheimer Center; VU University Medical Center; Amsterdam The Netherlands
- Department of Neurology; VU University Medical Center; Amsterdam The Netherlands
- Department of Epidemiology/Biostatistics; VU University Medical Center; Amsterdam The Netherlands
| |
Collapse
|
24
|
Vale FAC, Balieiro AP, Silva-Filho JH. Memory complaint scale (MCS). Proposed tool for active systematic search. Dement Neuropsychol 2012; 6:212-218. [PMID: 29213800 PMCID: PMC5619332 DOI: 10.1590/s1980-57642012dn06040004] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Subjective Memory Complaints (SMC) are frequent among adults and elderly and are
associated with poor quality of life. The etiology and clinical significance of
SMCs are unclear, but these complaints are associated with objective cognitive
decline or with depression, anxiety and psychosocial stressors. Biological and
physiological brain alterations resembling those in Alzheimer's Disease have
been found in SMC. SMC can evolve with different outcomes and represent the
initial symptom or a risk factor of dementia. Active systematic search can be
useful for early screening of candidates for preventive or therapeutic
interventions.
Collapse
Affiliation(s)
- Francisco A C Vale
- PhD, Adjunct Professor of Medicine of the Federal University of São Carlos (UFSCar), Neurologist, São Carlos SP, Brazil
| | - Ari P Balieiro
- Masters, Assistant Researcher of the Cognitive and Behavioral Neurology Group of the UFSCar and the Laboratory of Psychological Assessment of the UFAM, psychologist
| | - José Humberto Silva-Filho
- PhD, Adjunct Professor of the School of Psychology of the Federal University of Amazonas (UFAM), psychologist, Manaus AM, Brazil
| |
Collapse
|
25
|
Amariglio RE, Becker JA, Carmasin J, Wadsworth LP, Lorius N, Sullivan C, Maye JE, Gidicsin C, Pepin LC, Sperling RA, Johnson KA, Rentz DM. Subjective cognitive complaints and amyloid burden in cognitively normal older individuals. Neuropsychologia 2012; 50:2880-2886. [PMID: 22940426 DOI: 10.1016/j.neuropsychologia.2012.08.011] [Citation(s) in RCA: 337] [Impact Index Per Article: 28.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2012] [Revised: 08/11/2012] [Accepted: 08/14/2012] [Indexed: 01/17/2023]
Abstract
Accumulating evidence suggests that subjective cognitive complaints (SCC) may indicate subtle cognitive decline characteristic of individuals with preclinical Alzheimer's disease (AD). In this study, we sought to build upon previous studies by associating SCC and amyloid-β deposition using positron emission tomography with Pittsburgh Compound B (PiB-PET) in cognitively normal older individuals. One-hundred thirty one subjects (mean age 73.5±6) were administered three subjective cognitive questionnaires and a brief neuropsychological battery. A relationship between a subjective memory complaints composite score and cortical PiB binding was found to be significant, even after controlling for depressive symptoms. By contrast, there were no significant relationships between objective cognitive measures of memory and executive functions and cortical PiB binding. Our study suggests that SCC may be an early indicator of AD pathology detectable prior to significant objective impairment.
Collapse
Affiliation(s)
- Rebecca E Amariglio
- Department of Neurology, Division of Cognitive and Behavioral Neurology, Brigham and Women's Hospital, 221 Longwood Avenue, Boston, MA 02115, United States; Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States.
| | - J Alex Becker
- Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Jeremy Carmasin
- Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Lauren P Wadsworth
- Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Natacha Lorius
- Department of Neurology, Division of Cognitive and Behavioral Neurology, Brigham and Women's Hospital, 221 Longwood Avenue, Boston, MA 02115, United States; Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Caroline Sullivan
- Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Jacqueline E Maye
- Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Christopher Gidicsin
- Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Lesley C Pepin
- Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Reisa A Sperling
- Department of Neurology, Division of Cognitive and Behavioral Neurology, Brigham and Women's Hospital, 221 Longwood Avenue, Boston, MA 02115, United States; Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Keith A Johnson
- Department of Neurology, Division of Cognitive and Behavioral Neurology, Brigham and Women's Hospital, 221 Longwood Avenue, Boston, MA 02115, United States; Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States; Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Dorene M Rentz
- Department of Neurology, Division of Cognitive and Behavioral Neurology, Brigham and Women's Hospital, 221 Longwood Avenue, Boston, MA 02115, United States; Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| |
Collapse
|
26
|
Self-reported memory impairment and brain PET of amyloid and tau in middle-aged and older adults without dementia. Int Psychogeriatr 2012; 24:1076-84. [PMID: 22335970 PMCID: PMC3350563 DOI: 10.1017/s1041610212000051] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND Whether perceived changes in memory parallel changes in brain pathology is uncertain. Positron emission tomography (PET) scans using 2-(1-{6-[(2-[F-18]fluoroethyl)(methyl)amino]-2-naphthyl}ethylidene)malononitrile (FDDNP) can measure levels of amyloid plaques and tau neurofibrillary tangles in vivo. Here we investigate whether degree of self-reported memory impairment is associated with FDDNP-PET binding levels in persons without dementia. METHODS Fifty-seven middle-aged and older adults without dementia (mean age ±standard deviation = 66.3 ± 10.6 years), including 25 with normal aging and 32 with mild cognitive impairment (MCI), were assessed. The outcome measures were the four factor scores of the Memory Functioning Questionnaire (MFQ) (frequency of forgetting, seriousness of forgetting, retrospective functioning, and mnemonics use) and FDDNP-PET binding levels in medial temporal, lateral temporal, posterior cingulate, parietal, frontal, and global (overall average) regions of interest. RESULTS After controlling for age, higher reported frequency of forgetting was associated with greater medial temporal (r = -0.29, p = 0.05), parietal (r = -0.30, p = 0.03), frontal (r = -0.35, p = 0.01), and global FDDNP-PET binding levels (r = -0.33, p = 0.02). The remaining MFQ factor scores were not significantly associated with FDDNP-PET binding levels, and no significant differences were found between normal aging and MCI subjects. Item analysis of the frequency of forgetting factor revealed five questions that yielded similar results as the full 32-question scale (r = -0.52, p = 0.0002). CONCLUSIONS These findings suggest that some forms of memory self-awareness, in particular the reported frequency of forgetting, may reflect the extent of cerebral amyloid and tau brain pathology.
Collapse
|
27
|
Perrotin A, Mormino EC, Madison CM, Hayenga AO, Jagust WJ. Subjective cognition and amyloid deposition imaging: a Pittsburgh Compound B positron emission tomography study in normal elderly individuals. ACTA ACUST UNITED AC 2012; 69:223-9. [PMID: 22332189 DOI: 10.1001/archneurol.2011.666] [Citation(s) in RCA: 231] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
OBJECTIVE To study the relationship between subjective cognition and the neuropathological hallmark of Alzheimer disease (AD), amyloid-β (Aβ) deposition, using carbon 11-labeled Pittsburgh Compound B (PiB) positron emission tomography in normal elderly individuals. DESIGN Cross-sectional analysis. SUBJECTS Forty-eight cognitively normal elderly subjects (11 with high PiB uptake and 28 with low PiB uptake) were included. All underwent clinical and neuropsychological evaluations, magnetic resonance imaging, and positron emission tomography. SETTING Berkeley Aging Cohort Study. MAIN OUTCOME MEASURE Relationship between PiB uptake and subjective cognition measures. RESULTS Subjects with high PiB uptake showed significantly lower performance than those with low PiB uptake on an episodic memory measure and were less confident about their general memory abilities when required to evaluate themselves relative to other people of the same age. High and low PiB uptake groups did not differ on the accuracy of their cognitive self-reports compared with objective cognitive performance. General memory self-reports from the whole group were significantly correlated with regional PiB uptake in the right medial prefrontal cortex and anterior cingulate cortex and in the right precuneus and posterior cingulate cortex. Reduced confidence about memory abilities was associated with greater PiB uptake in these brain regions. All results were independent of demographic variables and depressive affects. CONCLUSIONS A decrease of self-confidence about memory abilities in cognitively normal elderly subjects may be related to the neuropathological hallmark of AD measured with PiB-positron emission tomography. Subjective cognitive impairment may represent a very early clinical manifestation of AD.
Collapse
Affiliation(s)
- Audrey Perrotin
- Helen Wills Neuroscience Institute, University of California, Berkeley, CA, USA
| | | | | | | | | |
Collapse
|
28
|
Yoon B, Shim YS, Hong YJ, Kim YD, Lee KO, Na SJ, Yang DW. Which symptoms can distinguish between subjective cognitive impairment (SCI) and mild cognitive impairment (MCI)? Arch Gerontol Geriatr 2011; 54:325-9. [PMID: 21696835 DOI: 10.1016/j.archger.2011.04.027] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2010] [Revised: 04/05/2011] [Accepted: 04/21/2011] [Indexed: 11/19/2022]
Abstract
The SCI, the MCI, and the Alzheimer's disease (AD) are on a spectrum of disease progression; therefore, identification of the earliest signs of cognitive deterioration is becoming a crucial issue. The goal of this study was to examine symptom characteristics and distinguish predictive symptoms in patients with MCI compared with SCI, using caregiver questionnaires. We assessed the Korean Dementia Screening Questionnaire (KDSQ) and Seoul Instrumental activities of Daily Living (S-IADL) of 344 subjects with SCI and 697 with MCI. Multivariate logistic regression analyses were conducted after adjusting for age, sex, and educational status. Common and rare symptoms were similar between the SCI and MCI groups. The most distinguishing features of KDSQ were 'Finds it hard to go somewhere on his/her own using public transportation' (odds ratio=OR=4.56, p<0.0001), 'Has difficulty in operating appliances' (OR=2.47, p=0.001), and 'Keeps repeating the same question' (OR=2.03, p<0.0001). In S-IADL, the most outstanding features were 'using household appliances' (OR=3.99, p<0.0001), 'taking medication' (OR=2.38, p=0.01), and 'using public transportation' (OR=1.94, p=0.04). The dysfunction in 'using household appliance' and 'using public transportation' reflect the possibility of MCI rather than SCI. Therefore, it is suggested that these symptoms also have a discriminative and predictive power in identifying SCI.
Collapse
Affiliation(s)
- Bora Yoon
- Department of Neurology, Konyang University College of Medicine, 685 Gasuwon-dong, Seo-gu, Daejeon 302-718, Republic of Korea
| | | | | | | | | | | | | |
Collapse
|
29
|
Confirmation rate of blinded (99m)Tc-SPECT compared to neurochemical dementia biomarkers in CSF in patients with Alzheimer disease. J Neural Transm (Vienna) 2010; 117:1111-4. [PMID: 20694486 DOI: 10.1007/s00702-010-0459-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2010] [Accepted: 07/27/2010] [Indexed: 10/19/2022]
Abstract
In Alzheimer disease, CSF biomarkers and nuclear imaging are of particular interest. Many studies investigated only one technique, limiting comparison. Here, in 76 patients blinded 99mTc-SPECT was compared to CSF. Sensitivity of CSF was 92%; and 51% for SPECT. Specificity favored SPECT (90 vs. 80%). Both techniques showed no coherence (p = 0.17-0.47). Our results confirm that CSF biomarkers show higher sensitivity. SPECT has higher specificity and can also be used for other dementias without established CSF biomarkers.
Collapse
|