Article (Scientific journals)
Prevalence of abnormal Alzheimer's disease biomarkers in patients with subjective cognitive decline: cross-sectional comparison of three European memory clinic samples.
Wolfsgruber, Steffen; Molinuevo, José Luis; Wagner, Michael et al.
2019In Alzheimer's Research and Therapy, 11 (1), p. 8
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Keywords :
CSF biomarkers; Preclinical Alzheimer’s disease; Subjective cognitive decline; Amyloid beta-Peptides; Biomarkers; MAPT protein, human; Peptide Fragments; amyloid beta-protein (1-42); tau Proteins; Aged; Alzheimer Disease/cerebrospinal fluid; Alzheimer Disease/epidemiology; Alzheimer Disease/psychology; Amyloid beta-Peptides/cerebrospinal fluid; Biomarkers/cerebrospinal fluid; Cognitive Dysfunction/cerebrospinal fluid; Cognitive Dysfunction/epidemiology; Cognitive Dysfunction/psychology; Cross-Sectional Studies; Europe/epidemiology; Female; Humans; Longitudinal Studies; Male; Middle Aged; Neuropsychological Tests; Outpatient Clinics, Hospital/trends; Peptide Fragments/cerebrospinal fluid; Prevalence; tau Proteins/cerebrospinal fluid; Diagnostic Self Evaluation; Cognitive Neuroscience; Neurology (clinical); Neurology
Abstract :
[en] [en] INTRODUCTION: Subjective cognitive decline (SCD) in cognitively unimpaired older individuals has been recognized as an early clinical at-risk state for Alzheimer's disease (AD) dementia and as a target population for future dementia prevention trials. Currently, however, SCD is heterogeneously defined across studies, potentially leading to variations in the prevalence of AD pathology. Here, we compared the prevalence and identified common determinants of abnormal AD biomarkers in SCD across three European memory clinics participating in the European initiative on harmonization of SCD in preclinical AD (Euro-SCD). METHODS: We included three memory clinic SCD samples with available cerebrospinal fluid (CSF) biomaterial (IDIBAPS, Barcelona, Spain, n = 44; Amsterdam Dementia Cohort (ADC), The Netherlands, n = 50; DELCODE multicenter study, Germany, n = 42). CSF biomarkers (amyloid beta (Aβ)42, tau, and phosphorylated tau (ptau181)) were centrally analyzed in Amsterdam using prespecified cutoffs to define prevalence of pathological biomarker concentrations. We used logistic regression analysis in the combined sample across the three centers to investigate center effects with regard to likelihood of biomarker abnormality while taking potential common predictors (e.g., age, sex, apolipoprotein E (APOE) status, subtle cognitive deficits, depressive symptoms) into account. RESULTS: The prevalence of abnormal Aβ42, but not tau or ptau181, levels was different across centers (64% DELCODE, 57% IDIBAPS, 22% ADC; p < 0.001). Logistic regression analysis revealed that the likelihood of abnormal Aβ42 (and also abnormal tau or ptau181) levels was predicted by age and APOE status. For Aβ42 abnormality, we additionally observed a center effect, indicating between-center heterogeneity not explained by age, APOE, or the other included covariates. CONCLUSIONS: While heterogeneous frequency of abnormal Aβ42 was partly explained by between-sample differences in age range and APOE status, the additional observation of center effects indicates between-center heterogeneity that may be attributed to different recruitment procedures. These findings highlight the need for the development of harmonized recruitment protocols for SCD case definition in multinational studies to achieve similar enrichment rates of preclinical AD.
Disciplines :
Neurology
Author, co-author :
Wolfsgruber, Steffen ;  Department of Neurodegeneration and Geriatric Psychiatry, University Hospital Bonn, Bonn, Germany. Steffen.Wolfsgruber@dzne.de ; German Center for Neurodegenerative Diseases, Sigmund-Freud-Straße 27, 53127, Bonn, Germany. Steffen.Wolfsgruber@dzne.de
Molinuevo, José Luis;  Alzheimer's Disease and Other Cognitive Disorders Unit, IDIBAPS, Hospital Clinic, Barcelona, Spain ; BarcelonaBeta Brain Research Center, Fundació Pasqual Maragall, Pompeu Fabra University, Barcelona, Spain
Wagner, Michael;  Department of Neurodegeneration and Geriatric Psychiatry, University Hospital Bonn, Bonn, Germany ; German Center for Neurodegenerative Diseases, Sigmund-Freud-Straße 27, 53127, Bonn, Germany
Teunissen, Charlotte E;  Neurochemistry Lab and Biobank, Department of Clinical Chemistry, Amsterdam Neuroscience, Amsterdam University Medical Centers, Amsterdam, The Netherlands
Rami, Lorena;  Alzheimer's Disease and Other Cognitive Disorders Unit, IDIBAPS, Hospital Clinic, Barcelona, Spain
Coll-Padrós, Nina;  Alzheimer's Disease and Other Cognitive Disorders Unit, IDIBAPS, Hospital Clinic, Barcelona, Spain
Bouwman, Femke H;  Alzheimer Center and Department of Neurology, Neuroscience Campus Amsterdam, Amsterdam University Medical Centers, Amsterdam, The Netherlands
Slot, Rosalinde E R;  Alzheimer Center and Department of Neurology, Neuroscience Campus Amsterdam, Amsterdam University Medical Centers, Amsterdam, The Netherlands
Wesselman, Linda M P;  Alzheimer Center and Department of Neurology, Neuroscience Campus Amsterdam, Amsterdam University Medical Centers, Amsterdam, The Netherlands
Peters, Oliver;  Department of Psychiatry and Psychotherapy, Charité, Campus Benjamin Franklin, Berlin, Germany
Luther, Katja;  Department of Psychiatry and Psychotherapy, Charité, Campus Benjamin Franklin, Berlin, Germany
Buerger, Katharina;  Institute for Stroke and Dementia Research, Klinikum der Universität München, Ludwig-Maximilians-Universität, Munich, Germany ; German Center for Neurodegenerative Diseases, Munich, Germany
Priller, Josef;  Department of Neuropsychiatry, Charité-Universitaetsmedizin Berlin, Berlin, Germany
Laske, Christoph;  Department of Psychiatry and Psychotherapy, University of Tübingen, Tübingen, Germany ; German Center for Neurodegenerative Diseases, Tübingen, Germany
Teipel, Stefan;  German Center for Neurodegenerative Diseases, Rostock, Germany
Spottke, Annika;  German Center for Neurodegenerative Diseases, Sigmund-Freud-Straße 27, 53127, Bonn, Germany
HENEKA, Michael  ;  Department of Neurodegeneration and Geriatric Psychiatry, University Hospital Bonn, Bonn, Germany ; German Center for Neurodegenerative Diseases, Sigmund-Freud-Straße 27, 53127, Bonn, Germany
Düzel, Emrah;  German Center for Neurodegenerative Diseases, Magdeburg, Germany
Drzezga, Alexander;  Department of Nuclear Medicine, Medical Faculty, University of Cologne, Cologne, Germany
Wiltfang, Jens;  German Center for Neurodegenerative Diseases (DZNE), Goettingen, Germany ; Department of Psychiatry and Psychotherapy, University Medical Center Goettingen, Goettingen, Germany ; iBiMED, Medical Sciences Department, University of Aveiro, Aveiro, Portugal
Sikkes, Sietske A M;  Department of Epidemiology and Biostatistics, Amsterdam University Medical Centers, Amsterdam, The Netherlands ; Massachusetts General Hospital, Department of Neurology / Harvard Medical School, Boston, USA
van der Flier, Wiesje M;  Alzheimer Center and Department of Neurology, Neuroscience Campus Amsterdam, Amsterdam University Medical Centers, Amsterdam, The Netherlands ; Department of Epidemiology and Biostatistics, Amsterdam University Medical Centers, Amsterdam, The Netherlands
Jessen, Frank;  German Center for Neurodegenerative Diseases, Sigmund-Freud-Straße 27, 53127, Bonn, Germany ; Department of Psychiatry, Medical Faculty, University of Cologne, Cologne, Germany
Euro-SCD working group
More authors (14 more) Less
External co-authors :
yes
Language :
English
Title :
Prevalence of abnormal Alzheimer's disease biomarkers in patients with subjective cognitive decline: cross-sectional comparison of three European memory clinic samples.
Publication date :
17 January 2019
Journal title :
Alzheimer's Research and Therapy
eISSN :
1758-9193
Publisher :
Springer Science and Business Media LLC, England
Volume :
11
Issue :
1
Pages :
8
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
JPND
Funding text :
This work was supported by an EU Joint Program Neurodegenerative Disease Research (JPND) project (grant number JPND_PS_FP-689-019). The project is supported through the following funding organizations under the aegis of JPND (www.jpnd.eu): Germany, Bundesministerium für Bildung und Forschung (BMBF grant number 01ED1508); The Netherlands Organisation for Health Research and Development; Spain, Instituto De Salud Carlos III. This research was also supported by the German Research Council (DFG; grant number JE 2707/7–1) and the German Center for Neurodegenerative Diseases (Deutsches Zentrum für Neurodegenerative Erkrankungen; DZNE; reference number BN012) (DELCODE). WMvdF is the recipient of a research grant on subjective cognitive decline (SCIENCe project: Gieskes Strijbis fonds). Prof Jens Wiltfang is supported by an Ilídio Pinho professorship and iBiMED (UID/BIM/ 04501/2013), and FCT project PTDC/DTP_PIC/5587/2014 at the University of Aveiro, Portugal.
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