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Pei J, Palanisamy CP, Jayaraman S, Natarajan PM, Umapathy VR, Roy JR, Thalamati D, Ahalliya RM, Kanniappan GV, Mironescu M. Proteomics profiling of extracellular vesicle for identification of potential biomarkers in Alzheimer's disease: A comprehensive review. Ageing Res Rev 2024; 99:102359. [PMID: 38821418 DOI: 10.1016/j.arr.2024.102359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2024] [Revised: 05/28/2024] [Accepted: 05/28/2024] [Indexed: 06/02/2024]
Abstract
The intricate origins and diverse symptoms of Alzheimer's disease (AD) pose significant challenges for both diagnosis and treatment. Exosomes and microvesicles, which carry disease-specific cargo from a variety of central nervous system cell types, have emerged as promising reservoirs of biomarkers for AD. Research on the screening of possible biomarkers in Alzheimer's disease using proteomic profiling of EVs is systematically reviewed in this comprehensive review. We highlight key methodologies employed in EV isolation, characterization, and proteomic analysis, elucidating their advantages and limitations. Furthermore, we summarize the evolving landscape of EV-associated biomarkers implicated in AD pathogenesis, including proteins involved in amyloid-beta metabolism, tau phosphorylation, neuroinflammation, synaptic dysfunction, and neuronal injury. The literature review highlights the necessity for robust validation strategies and standardized protocols to effectively transition EV-based biomarkers into clinical use. In the concluding section, this review delves into potential future avenues and technological advancements pivotal in crafting EV-derived biomarkers applicable to AD diagnostics and prognostics. This review contributes to our comprehension of AD pathology and the advancement of precision medicine in neurodegenerative diseases, hinting at a promising era in AD precision medicine.
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Affiliation(s)
- JinJin Pei
- Qinba State Key Laboratory of Biological Resources and Ecological Environment, 2011 QinLing-Bashan Mountains Bioresources Comprehensive Development C. I. C, Shaanxi Province Key Laboratory of Bio-Resources, College of Bioscience and Bioengineering, Shaanxi University of Technology, Hanzhong 723001, China
| | - Chella Perumal Palanisamy
- Department of Chemical Technology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand.
| | - Selvaraj Jayaraman
- Centre of Molecular Medicine and Diagnostics (COMManD), Department of Biochemistry, Saveetha Dental College & Hospital, Saveetha Institute of Medical & Technical Sciences, Saveetha University, Chennai 600077, India
| | - Prabhu Manickam Natarajan
- Department of Clinical Sciences, Center of Medical and Bio-allied Health Sciences and Research, College of Dentistry, Ajman University, Ajman, United Arab Emirates
| | - Vidhya Rekha Umapathy
- Department of Public Health Dentistry, Thai Moogambigai Dental College and Hospital, Dr. MGR Educational and Research Institute, Chennai 600 107, Tamil Nadu, India
| | - Jeane Rebecca Roy
- Department of Anatomy, Bhaarath Medical College and hospital, Bharath Institute of Higher Education and Research (BIHER), Chennai, Tamil Nadu 600073, India
| | | | - Rathi Muthaiyan Ahalliya
- Department of Biochemistry, FASCM, Karpagam Academy of Higher Education, Coimbatore, Tamil Nadu 641021, India
| | | | - Monica Mironescu
- Faculty of Agricultural Sciences, Food Industry and Environmental Protection, Research Center in Biotechnology and Food Engineering, Lucian Blaga University of Sibiu, 7-9 Ioan Ratiu Street, Sibiu 550024, Romania.
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Whitfield T, Chouliaras L, Morrell R, Rubio D, Radford D, Marchant NL, Walker Z. The criteria used to rule out mild cognitive impairment impact dementia incidence rates in subjective cognitive decline. Alzheimers Res Ther 2024; 16:142. [PMID: 38943160 PMCID: PMC11212190 DOI: 10.1186/s13195-024-01516-6] [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: 04/16/2024] [Accepted: 06/23/2024] [Indexed: 07/01/2024]
Abstract
BACKGROUND The research criteria for subjective cognitive decline (SCD) exclude mild cognitive impairment (MCI), but do not stipulate the use of specific MCI criteria. This study compared different approaches to defining (i.e., excluding) MCI during the ascertainment of SCD, focusing on the impact on dementia incidence rates in SCD. METHODS This cohort study utilized routine healthcare data collected in the Essex Memory Clinic from 1999 to 2023. Two different operationalizations of the SCD criteria were used to categorize the cohort into two SCD patient samples. One sample was based on local clinical practice - MCI was excluded according to the Winblad criteria (this sample was termed SCDWinblad). The other sample was created via the retrospective application of the Jak/Bondi criteria for the exclusion of MCI (termed SCDJak/Bondi). Only patients aged ≥ 55 years at baseline with ≥ 12 months follow-up were considered for inclusion. The initial clinical/demographic characteristics of the samples were compared. Rates of incident dementia were calculated for each sample, and unadjusted and Mantel-Haenszel-adjusted incidence rate ratios were calculated to compare dementia incidence between the SCD samples. RESULTS The Essex Memory Clinic database included 2,233 patients in total. The SCD and study eligibility criteria were used to select SCDWinblad (n = 86) and SCDJak/Bondi (n = 185) samples from the database. Median follow-up (3 years) did not differ between the two samples. The SCDJak/Bondi sample was significantly older than the SCDWinblad at first assessment (median age: 74 versus 70 years) and had poorer scores on tests of global cognition, immediate and delayed verbal recall, and category fluency. Following adjustment for age, the dementia incidence rate ratio [95% confidence interval] was 3.7 [1.5 to 9.3], indicating a significantly greater rate of progression to dementia in SCDJak/Bondi. CONCLUSIONS This study highlights that the approach used to ascertain SCD has important implications for both SCD phenotypes and prognosis. This underscores the importance of how MCI is operationalized within SCD studies. More broadly, the findings add to a growing body of work indicating that objective cognition should not be overlooked in SCD, and offer a potential explanation for the heterogeneity across the SCD prognostic literature.
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Affiliation(s)
- Tim Whitfield
- Division of Psychiatry, University College London, London, UK.
| | - Leonidas Chouliaras
- Department of Psychiatry, University of Cambridge School of Clinical Medicine, Cambridge, UK
- Specialist Dementia and Frailty Service, Essex Partnership University NHS Foundation Trust, St Margaret's Hospital, Epping, UK
| | - Rachel Morrell
- Division of Psychiatry, University College London, London, UK
| | - David Rubio
- Specialist Dementia and Frailty Service, Essex Partnership University NHS Foundation Trust, St Margaret's Hospital, Epping, UK
| | - Darren Radford
- Specialist Dementia and Frailty Service, Essex Partnership University NHS Foundation Trust, St Margaret's Hospital, Epping, UK
| | | | - Zuzana Walker
- Division of Psychiatry, University College London, London, UK
- Specialist Dementia and Frailty Service, Essex Partnership University NHS Foundation Trust, St Margaret's Hospital, Epping, UK
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Conca F, Esposito V, Catricalà E, Manenti R, L'Abbate F, Quaranta D, Giuffrè GM, Rossetto F, Solca F, Orso B, Inguscio E, Crepaldi V, De Matteis M, Rotondo E, Manera M, Caruso G, Catania V, Canu E, Rundo F, Cotta Ramusino M, Filippi M, Fundarò C, Piras F, Arighi A, Tiraboschi P, Stanzani Maserati M, Pardini M, Poletti B, Silani V, Marra C, Di Tella S, Cotelli M, Lodi R, Tagliavini F, Cappa SF. Clinical validity of the Italian adaptation of the Uniform Data Set Neuropsychological Test Battery (I-UDSNB) in Mild Cognitive Impairment and Alzheimer's Disease. Alzheimers Res Ther 2024; 16:98. [PMID: 38704608 PMCID: PMC11069160 DOI: 10.1186/s13195-024-01465-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Accepted: 04/21/2024] [Indexed: 05/06/2024]
Abstract
BACKGROUND The identification and staging of Alzheimer's Disease (AD) represent a challenge, especially in the prodromal stage of Mild Cognitive Impairment (MCI), when cognitive changes can be subtle. Worldwide efforts were dedicated to select and harmonize available neuropsychological instruments. In Italy, the Italian Network of Neuroscience and Neuro-Rehabilitation has promoted the adaptation of the Uniform Data Set Neuropsychological Test Battery (I-UDSNB), collecting normative data from 433 healthy controls (HC). Here, we aimed to explore the ability of I-UDSNB to differentiate between a) MCI and HC, b) AD and HC, c) MCI and AD. METHODS One hundred thirty-seven patients (65 MCI, 72 AD) diagnosed after clinical-neuropsychological assessment, and 137 HC were included. We compared the I-UDSNB scores between a) MCI and HC, b) AD and HC, c) MCI and AD, with t-tests. To identify the test(s) most capable of differentiating between groups, significant scores were entered in binary logistic and in stepwise regressions, and then in Receiver Operating Characteristic curve analyses. RESULTS Two episodic memory tests (Craft Story and Five Words test) differentiated MCI from HC subjects; Five Words test, Semantic Fluency (vegetables), and TMT-part B differentiated AD from, respectively, HC and MCI. CONCLUSIONS Our findings indicate that the I-UDSNB is a suitable tool for the harmonized and concise assessment of patients with cognitive decline, showing high sensitivity and specificity for the diagnosis of MCI and AD.
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Affiliation(s)
- Francesca Conca
- ICoN Cognitive Neuroscience Center, Institute for Advanced Studies, IUSS, Pavia, Italy
| | | | - Eleonora Catricalà
- ICoN Cognitive Neuroscience Center, Institute for Advanced Studies, IUSS, Pavia, Italy.
| | - Rosa Manenti
- Neuropsychology Unit, IRCCS Istituto Centro San Giovanni di Dio Fatebenefratelli, Brescia, Italy
| | - Federica L'Abbate
- Neurology Unit, Fondazione Policlinico Universitario "A. Gemelli" IRCCS, Rome, Italy
| | - Davide Quaranta
- Neurology Unit, Fondazione Policlinico Universitario "A. Gemelli" IRCCS, Rome, Italy
- Department of Psychology, Catholic University of the Sacred Heart, Milan, Italy
| | - Guido Maria Giuffrè
- Neurology Unit, Fondazione Policlinico Universitario "A. Gemelli" IRCCS, Rome, Italy
| | | | - Federica Solca
- Department of Neurology and Laboratory of Neuroscience, IRCCS Istituto Auxologico Italiano, Milan, Italy
| | - Beatrice Orso
- Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health (DINOGMI), University of Genoa, Genoa, Italy
| | | | | | | | - Emanuela Rotondo
- Neurodegenerative Diseases Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Marina Manera
- Istituti Clinici Scientifici Maugeri IRCCS, Psychology Unit Pavia-Montescano, Pavia Institute, Pavia, Italy
| | - Giulia Caruso
- Neuropsychiatric Laboratory, Clinical Neuroscience and Neurorehabilitation Department, IRCCS Fondazione Santa Lucia, Rome, Italy
| | | | - Elisa Canu
- Neuroimaging Research Unit, Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | | | | | - Massimo Filippi
- Neuroimaging Research Unit, Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy
- Neurology Unit, Neurophysiology Service, Neurorehabilitation Unit, IRCCS San Raffaele Scientific Institute, Milan, Italy
- Vita-Salute San Raffaele University, Milan, Italy
| | - Cira Fundarò
- Istituti Clinici Scientifici Maugeri IRCCS, Neurophysiopatology Unit Pavia-Montescano, Pavia Institute, Pavia, Italy
| | - Federica Piras
- Neuropsychiatric Laboratory, Clinical Neuroscience and Neurorehabilitation Department, IRCCS Fondazione Santa Lucia, Rome, Italy
| | - Andrea Arighi
- Neurodegenerative Diseases Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | | | | | - Matteo Pardini
- Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health (DINOGMI), University of Genoa, Genoa, Italy
- IRCCS Ospedale Policlinico S. Martino, Genoa, Italy
| | - Barbara Poletti
- Department of Neurology and Laboratory of Neuroscience, IRCCS Istituto Auxologico Italiano, Milan, Italy
- Department of Oncology and Hemato-Oncology, Università degli Studi di Milano, Milan, Italy
| | - Vincenzo Silani
- Department of Neurology and Laboratory of Neuroscience, IRCCS Istituto Auxologico Italiano, Milan, Italy
- "Dino Ferrari" Center, Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy
| | - Camillo Marra
- Neurology Unit, Fondazione Policlinico Universitario "A. Gemelli" IRCCS, Rome, Italy
- Department of Psychology, Catholic University of the Sacred Heart, Milan, Italy
| | - Sonia Di Tella
- Department of Psychology, Catholic University of the Sacred Heart, Milan, Italy
- IRCCS Fondazione Don Carlo Gnocchi, ONLUS, Milan, Italy
| | - Maria Cotelli
- Neuropsychology Unit, IRCCS Istituto Centro San Giovanni di Dio Fatebenefratelli, Brescia, Italy
| | - Raffaele Lodi
- IRCCS Istituto delle Scienze Neurologiche di Bologna, Bologna, Italy
| | | | - Stefano Francesco Cappa
- ICoN Cognitive Neuroscience Center, Institute for Advanced Studies, IUSS, Pavia, Italy
- IRCCS Mondino Foundation, Pavia, Italy
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Nopparat C, Boontor A, Kutpruek S, Govitrapong P. The role of melatonin in amyloid beta-induced inflammation mediated by inflammasome signaling in neuronal cell lines. Sci Rep 2023; 13:17841. [PMID: 37857668 PMCID: PMC10587142 DOI: 10.1038/s41598-023-45220-1] [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: 05/26/2023] [Accepted: 10/17/2023] [Indexed: 10/21/2023] Open
Abstract
Alzheimer's disease (AD) is the most prevalent neurodegenerative disorder. In addition to amyloid beta (Aβ) and tau, neuroinflammation is a crucial element in the etiology of this disease. However, the relevance of inflammasome-induced pyroptosis to AD is unknown. We aimed to clarify whether the anti-inflammatory effects of melatonin could prevent Aβ-mediated activation of the inflammasome. We demonstrated that Aβ upregulated NOD-like receptor family pyrin domain-containing 3 (NLRP3), apoptosis-associated speck-like protein containing a CARD, and cysteinyl aspartate-specific proteinase caspase (caspase 1) expression in SH-SY5Y neuroblastoma cells, resulting in the release of proinflammatory cytokines, including interleukin-1β (IL-1β), interleukin-18 (IL-18) and tumor necrosis factor (TNF-α). Melatonin prevented inflammasome signaling and excessive cytokine release caused by Aβ. We found that ethyl 2[(2-chlorophenyl)(hydroxy) methyl]acrylate (INF-4E, NLRP3 and caspase 1 inhibitor) significantly abolished Aβ-induced proinflammatory cytokine expression. The increase in cleaved-caspase 1, pro-IL18, and cleaved-IL18 caused by Aβ suggested the occurrence of pyroptosis, which was further confirmed by the increased expression of N-terminal gasdermin D (N-GSDMD). Melatonin plays a protective role against Aβ-induced inflammation via an inflammasome-associated mechanism that is essential in inducing the active forms of cytokines and pyroptosis. The ability of melatonin to inhibit inflammasome may represent a turning point in the treatment of AD progression.
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Affiliation(s)
- Chutikorn Nopparat
- Innovative Learning Center, Srinakharinwirot University, Sukhumvit 23, Bangkok, 10110, Thailand
| | - Anuttree Boontor
- Chulabhorn Graduate Institute, Chulabhorn Royal Academy, Laksi, Bangkok, Thailand
| | - Suchanoot Kutpruek
- Chulabhorn Graduate Institute, Chulabhorn Royal Academy, Laksi, Bangkok, Thailand
| | - Piyarat Govitrapong
- Chulabhorn Graduate Institute, Chulabhorn Royal Academy, Laksi, Bangkok, Thailand.
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5
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Christianson K, Prabhu M, Popp ZT, Rahman MS, Drane J, Lee M, Lathan C, Lin H, Au R, Sunderaraman P, Hwang PH. Adherence type impacts completion rates of frequent mobile cognitive assessments among older adults with and without cognitive impairment. RESEARCH SQUARE 2023:rs.3.rs-3350075. [PMID: 37841867 PMCID: PMC10571616 DOI: 10.21203/rs.3.rs-3350075/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2023]
Abstract
Background Prior to a diagnosis of Alzheimer's disease, many individuals experience cognitive and behavioral fluctuations that are not detected during a single session of traditional neuropsychological assessment. Mobile applications now enable high-frequency cognitive data to be collected remotely, introducing new opportunities and challenges. Emerging evidence suggests cognitively impaired older adults are capable of completing mobile assessments frequently, but no study has observed whether completion rates vary by assessment frequency or adherence type. Methods Thirty-three older adults were recruited from the Boston University Alzheimer's Disease Research Center (mean age = 73.5 years; 27.3% cognitively impaired; 57.6% female; 81.8% White, 18.2% Black). Participants remotely downloaded and completed the DANA Brain Vital application on their own mobile devices throughout the study. The study schedule included seventeen assessments to be completed over the course of a year. Specific periods during which assessments were expected to be completed were defined as subsegments, while segments consisted of multiple subsegments. The first segment included three subsegments to be completed within one week, the second segment included weekly subsegments and spanned three weeks, and the third and fourth segments included monthly subsegments spanning five and six months, respectively. Three distinct adherence types - subsegment adherence, segment adherence, and cumulative adherence - were examined to determine how completion rates varied depending on assessment frequency and adherence type. Results Adherence type significantly impacted whether the completion rates declined. When utilizing subsegment adherence, the completion rate significantly declined (p = 0.05) during the fourth segment. However, when considering completion rates from the perspective of segment adherence, a decline in completion rate was not observed. Overall adherence rates increased as adherence parameters were broadened from subsegment adherence (60.6%) to segment adherence (78.8%), to cumulative adherence (90.9%). Conclusions Older adults, including those with cognitive impairment, are able to complete remote cognitive assessments at a high-frequency, but may not necessarily adhere to prescribed schedules.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Rhoda Au
- Boston University School of Medicine
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Stecker M. A Perspective: Challenges in Dementia Research. MEDICINA (KAUNAS, LITHUANIA) 2022; 58:1368. [PMID: 36295529 PMCID: PMC9609997 DOI: 10.3390/medicina58101368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 09/21/2022] [Accepted: 09/27/2022] [Indexed: 11/17/2022]
Abstract
Although dementia is a common and devastating disease that has been studied intensely for more than 100 years, no effective disease modifying treatment has been found. At this impasse, new approaches are important. The purpose of this paper is to provide, in the context of current research, one clinician's perspective regarding important challenges in the field in the form of specific challenges. These challenges not only illustrate the scope of the problems inherent in finding treatments for dementia, but can also be specific targets to foster discussion, criticism and new research. One common theme is the need to transform research activities from small projects in individual laboratories/clinics to larger multinational projects, in which each clinician and researcher works as an integral part. This transformation will require collaboration between researchers, large corporations, regulatory/governmental authorities and the general population, as well as significant financial investments. However, the costs of transforming the approach are small in comparison with the cost of dementia.
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Affiliation(s)
- Mark Stecker
- Fresno Institute of Neuroscience, Fresno, CA 93720, USA
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7
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Wang Y, Li L, Zhao X, Sui S, Wang Q, Shi G, Xu H, Zhang X, He Y, Gu J. Intestinal Microflora Changes in Patients with Mild Alzheimer's Disease in a Chinese Cohort. J Alzheimers Dis 2022; 88:563-575. [PMID: 35662119 DOI: 10.3233/jad-220076] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
BACKGROUND Understanding the relationship between Alzheimer's disease (AD) and intestinal flora is still a major scientific topic that continues to advance. OBJECTIVE To determine characterized changes in the intestinal microbe community of patients with mild AD. METHODS Comparison of the 16S ribosomal RNA (rRNA) high-throughput sequencing data was obtained from the Illumina MiSeq platform of fecal microorganisms of the patients and healthy controls (HC) which were selected from cohabiting caregivers of AD patients to exclude environmental and dietary factors. RESULTS We found that the abundance of several bacteria taxa in AD patients was different from that in HC at the genus level, such as Anaerostipes, Mitsuokella, Prevotella, Bosea, Fusobacterium, Anaerotruncus, Clostridium, and Coprobacillus. Interestingly, the abundance of Akkermansia, an emerging probiotic, increased significantly in the AD group compared with that in the HC group. Meanwhile, the quantity of traditional probiotic Bifidobacteria of the AD group also rose. CONCLUSION These alterations in fecal microbiome of the AD group indicate that patients with mild AD have unique gut microbial characteristics. These specific AD-associated intestinal microbes could serve as novel potential targets for early intervention of AD.
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Affiliation(s)
- Yilin Wang
- College of Biological Science and Technology, University of Jinan, Jinan, China
| | - Lei Li
- Department of Neurology, Shandong Provincial Qianfoshan Hospital, the First Hospital Affiliated with Shandong First Medical University, China
| | - Xiaodong Zhao
- College of Biological Science and Technology, University of Jinan, Jinan, China
| | - Shaomei Sui
- Department of Neurology, Shandong Provincial Qianfoshan Hospital, the First Hospital Affiliated with Shandong First Medical University, China
| | - Qi Wang
- Department of Neurology, Shandong Provincial Qianfoshan Hospital, the First Hospital Affiliated with Shandong First Medical University, China
| | - Guizhi Shi
- Institute of Biophysics, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Huilian Xu
- College of Biological Science and Technology, University of Jinan, Jinan, China
| | - Xiujun Zhang
- College of Biological Science and Technology, University of Jinan, Jinan, China
| | - Yan He
- Department of Neurology, Shandong Provincial Qianfoshan Hospital, the First Hospital Affiliated with Shandong First Medical University, China
| | - Jinsong Gu
- College of Biological Science and Technology, University of Jinan, Jinan, China
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Rotenberg S, Dawson DR. Characterizing Cognition in Everyday Life of Older Adults With Subjective Cognitive Decline. OTJR-OCCUPATION PARTICIPATION AND HEALTH 2022; 42:269-276. [PMID: 35499254 PMCID: PMC9459355 DOI: 10.1177/15394492221093310] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Subjective cognitive decline (SCD), the subjective experience of
worsening cognition with no objective cognitive impairment, poses a
heightened risk for dementia. This study aimed to characterize
cognition in the everyday life of people with SCD, is crucial for
understanding and preventing further functional and cognitive decline.
One hundred and thirty-five older adults (age 70.7±6.7) with SCD were
assessed using functional-cognition measures: Multifactorial Memory
Questionnaire (MMQ), Behavior Rating Inventory of Executive
Function–Adult version (BRIEF-A), and Multiple Errands Test (MET). The
resulted showed that older adults with SCD reported lower memory
satisfaction (Hedges’s g = 0.41) on the MMQ, and
worse metacognition on the BRIEF-A (Hedges’s g =
0.63) compared with published normative data. They completed an
average of only 6/12 required tasks on the MET. The findings show
functional difficulties related to SCD and inform the development of
occupational therapy intervention for this population.
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Affiliation(s)
- Shlomit Rotenberg
- University of Toronto, Ontario, Canada
- Baycrest Health Sciences, Toronto, Ontario, Canada
| | - Deirdre R. Dawson
- University of Toronto, Ontario, Canada
- Baycrest Health Sciences, Toronto, Ontario, Canada
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