This project comprises of two complementary parts. One part is aimed at the development of innovative diagnostic techniques to detect molecular signatures of AD based on disturbances of amyloid metabolism and glutamate neurotransmission. In this part, the focus is on the two most promising diagnostic approaches in AD: (molecular) imaging techniques and molecular diagnostic tests of CSF. In the second part of this study, techniques for which proof-of-concept has been found in humans are applied in a large group of AD patients. These patients are recruited in an established network of 4 collaborating memory clinics in The Netherlands, which use a standardized diagnostic protocol and share an extensive common database. Furthermore, more mature molecular, structural, and functional imaging and molecular diagnostic CSF techniques as well as the conventional diagnostic work-up will be applied from the start of the study in patients from the same network of memory clinics.
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The Health 2000 Survey, carried out in 2000-2001 in Finland, was coordinated by the National Institute for Health and Welfare, THL (the former National Public Health Institute) in co-operation with an extensive network of organizations and experts. The aim of the survey was to provide information on major public health problems, their causes and treatment, health service needs and utilization as well as functional and working capacity. The data for the survey were collected in comprehensive health examination including blood sampling, in interviews and in self-administered questionnaires. The nationally representative sample included 8,028 persons aged 30 or over of whom 85% participated in the health examination conducted at 80 areas in the mainland Finland. In addition, 1,894 young adults (18-29 years) were invited to the health interview and fill in the questionnaire. Further, 1,278 people who had taken part in Mini-Finland Health Survey carried out in 1978-1980 were invited to the re-examination.
The follow-up of the Health 2000 Survey, the Health 2011 Survey, was carried out in 2011-2012. All members of the Health 2000 sample (n=8,135), who were living in Finland in 2011 and had not refused requests to be invited to further studies, were invited to the Health 2011 Survey. In 2011, they were at least 29 years of age. A total of 59% of them participated in the health examination conducted at 59 areas in Finland. In addition, a new random sample of young adults (aged 18-28, n=1,994) was taken. A total of 415 of them were invited to the health examination and the rest of them (1,579) received only the postal questionnaire. Further, 920 people who had previously taken part in the Mini-Finland Health Survey and invited to re-examination in 2001 were invited.
The Health 2000/2011 cohort is also continuously followed-up by linkage to Finnish nationwide registers.
The Open Access Series of Imaging Studies (OASIS) is a project aimed at making MRI data sets of the brain freely available to the scientific community.
OASIS: Cross-sectional MRI Data in Young, Middle Aged, Nondemented and Demented Older Adults
This set consists of a cross-sectional collection of 416 subjects aged 18 to 96. For each subject, 3 or 4 individual T1-weighted MRI scans obtained in single scan sessions are included. The subjects are all right-handed and include both men and women. 100 of the included subjects over the age of 60 have been clinically diagnosed with very mild to moderate Alzheimer’s disease (AD). Additionally, a reliability data set is included containing 20 nondemented subjects imaged on a subsequent visit within 90 days of their initial session.
OASIS: Longitudinal MRI Data in Nondemented and Demented Older Adults
This set consists of a longitudinal collection of 150 subjects aged 60 to 96. Each subject was scanned on two or more visits, separated by at least one year for a total of 373 imaging sessions. For each subject, 3 or 4 individual T1-weighted MRI scans obtained in single scan sessions are included. The subjects are all right-handed and include both men and women. 72 of the subjects were characterized as nondemented throughout the study. 64 of the included subjects were characterized as demented at the time of their initial visits and remained so for subsequent scans, including 51 individuals with mild to moderate Alzheimer’s disease. Another 14 subjects were characterized as nondemented at the time of their initial visit and were subsequently characterized as demented at a later visit.
Last Update 21/09/2017
The Wisconsin Longitudinal Study (WLS) is a longitudinal population cohort started in 1957, with a questionnaire administered to all Wisconsin High School seniors. In 1964, a randomly selected one-third of the members of the class of 1957 were followed up with a brief questionnaire to parents asking about their child’s post high-school education and occupation. Direct contact with the graduate began with a telephone interview in 1975, and subsequent telephone and mail surveys in 1993 2004. In 1977 a subset of graduate’s siblings were interviewed by phone and in 1995 and 2005 interviews were conducted with one sibling from each family whenever possible. Spouses of Graduates and Siblings who were married at the time of the 2004/2005 interview were also interviewed by phone. Most recently in-person interviews with a leave-behind questionnaire were administered in 2011 to both the graduate and sibling panels. Saliva was collected from both graduate and sibling participants via a mail-effort in 2008 and during the in-person 2011 interview.
Last Update 21/09/2017
The aim of GS: SFHS is to establish a large, family-based intensively-phenotyped cohort recruited from the general population across Scotland, as a resource for studying the genetics of health areas of current and projected public health importance. It aims to identify genetic variants accounting for variation in levels of quantitative traits underlying the major common complex diseases (such as cardiovascular disease, cognitive decline, mental illness) in Scotland.
Baseline data was collected at a single clinic visit. Longitudinal data is available by linkage to NHS medical records. Some participants are being invited to new clinic visits in 2015-17. This profile also includes scanning information from the Stratifying Resilience and Depression Longitudinally (STRADL) study to which approximately 1500 GS participants are being invited for scanning.
Last Update 21/09/2017
The EADC-PET project (EAPP, The European Alzheimer’s Disease Consortium PET project) is a spontaneous multicentric study (ProtocolDraftSep2008; ProtocolDraftFeb2009) involving at the moment five Centres in four Countries (CENTRES), belonging to the EADC consortium. It was launched during the EADC meeting in Amsterdam, during fall 2007, by Flavio Nobili (Genoa) who is the Principal Investigator.
The project aims at sharing FDG-PET, MRI, neuropsychological, genetic, EEG and clinical information of patients with amnestic Mild Cognitive Impairment (aMCI) and matched healthy controls. Information is uploaded in a safe FTP facility on the server of University of Genoa. Username and password have been provided to all participants. Use of data is regulated by a ‘Confidentiality Disclosure Agreement’ that can be downloaded from this web site (Confidential_Disclosure_Agreement). The Centres propose original studies by sending a formal proposal to all participants who can agree or disagree, or propose modifications/suggestions to the original proposal.
The objective is to follow-up aMCI patients with clinical and neuropsychological examinations to pick up conversion to Alzheimer’s dementia or to other forms of dementia. FDG-PET can be analyzed by means of several post-processing strategies to highlight glucose metabolic information and to identify the characteristics of what is today called ‘prodromal’ AD.
Last Update 21/09/2017
AWHS is a prospective, longitudinal cohort study based on the annual health exams of 5,688 workers of the General Motors Spain automobile assembly plant located in Figueruelas (Zaragoza, Spain). The study was designed to evaluate the trajectories of traditional and emergent cardiovascular diseases (CVD) risk factors (overweight, obesity, high blood pressure, diabetes, smoking, dietary habits or sedentary lifestyle), and their association with metabolic abnormalities and the prevalence and progression of subclinical atherosclerosis in a population of middle-aged men and women in Spain.
The specific aims of AWHS are:
1. To establish the research infrastructure required for a longitudinal cohort study, including setting up a biobank of repeated biological samples to conduct future assays in stored serum, plasma, whole blood, urine and DNA.
2. To identify new genetic, behavioural, and environmental determinants of the progression of adiposity and of the development of metabolic abnormalities and cardiovascular risk factors.
3. To characterize the prevalence and progression of subclinical CVD through non-invasive imaging techniques and their genetic, behavioural, and environmental determinants.
4. To interact with external investigators to promote the use of the study database and stored materials for ancillary studies and to disseminate the study findings to the scientific community, to public health authorities, and to the general public.
To collect data, factory workers undergo a standardized annual clinical exam, providing a clinical history, including clinical events and hospitalizations over the past year and current medication use, and undergo a physical exam, consisting of anthropometry (height, weight, and waist circumference), blood pressure measurements and heart rate, as well as laboratory assays, providing biological samples including serum, plasma, blood, urine and DNA. Data collection at the annual medical exams is conducted by the physicians and nurses of the Medical Services of General Motors Spain, who underwent training and standardization programs organized by the study investigators.
Each year, one random third of study participants 40 ﾖ55 years of age at baseline (n=2667) are selected for subclinical atherosclerosis imaging (Cardiac CT for Calcium Scoring, 2D ultrasound of carotid arteries, infrarenal aorta and femoral arteries), and for additional questionnaires of cardiovascular and lifestyle factors (dietary habits, sedentary, physical activity and sleep).
On September 2017, a substudy will begin with the aim of identifying early cognitive impairment in workers over 55 years of age, by using specific questionnaires and gene screening (Apo E).
Workers were excluded from the cohort if they have clinically overt CVD, or a major clinical condition limiting survival to <3 years at baseline. All laboratory procedures have been reviewed and improved to meet the ISO 9001:2008 standard, verified by an external audit.
Last Update 21/09/2017
The Coronary Artery Risk Development in (Young) Adults (CARDIA) Study was initiated in 1984 by the National Heart, Lung, and Blood Institute (NHLBI) to assist in providing a better understanding of the
trends and determinants of coronary heart disease (CHD) in the United States (US). The study began by focusing on young adults ? persons 18 to 30 years of age at the time of the Year 0 (Y0) baseline
screening, undertaken between March 1985 and June 1986. A random selection of 5,115 black and white men and women identified by each of the four CARDIA field centres constituted the cohort.
Follow?up examinations at Y2, Y5, Y7, Y10, Y15, Y20, and Y25 achieved high retention, collected a rich set of high quality data and stored specimens bearing on the risk factors and possible causes of cardiovascular disease (CVD).
Last Update 21/09/2017
Next Steps (previously known as the Longitudinal Study of Young People in England – LSYPE) is a major innovative cohort study of young people. The study began in 2004 and included all young people in Year 9, aged between 13 and 14, who attended state and independent schools in England.
Next Steps is one of the main information sources for the formation and appraisal of policies relating to young people and will continue to be so for at least the next 10 years. The baseline data will be used to monitor the progress of the cohort group, evaluate the success of policies aimed at this group and provide an evidence base for further policy development. The study brings together data from a wide range of sources and reflects the variety of influences on learning and progression.
Following the initial survey at age 13-14, the cohort members were visited every year until 2010, when they were age 19-20. Young people were interviewed along with their parents up to sweep 4 (age 17).
The most recent survey took place in 2015/16, when the cohort members were 25 years old. It maintained the strong focus on education, but the content was broadened to become a more multi-disciplinary research resource. Data was collected about cohort members’ housing and family life, employment and economic circumstances, education and job training, physical and emotional health, and identity and participation. A wide range of administrative data linkage consents were collected in the domains of health, education, economics and criminal behaviour.
Last Update 21/09/2017
STROKOG is a consortium of longitudinal studies of cognitive disorders following stroke, TIA or small vessel disease. Developed under the auspices of VASCOG (Society for the Study of Vascular Cognitive and Behavioural Disorders), it is the first international effort to harmonise work on post-stroke dementia and is being led by CHeBA researchers.
The consortium brings together studies that have examined post-stroke or other high vascular risk cohorts longitudinally, with cognitive decline and dementia (including sub-types) as primary outcome variables. The included studies (N=27; total sample of more than 10,000 individuals, representing 17 countries) have rich neuropsychological and MRI data, and some recent studies (n=3) have included amyloid imaging in sub-samples. A number of studies have CSF and/or plasma available for biomarker studies, and participant enrolment in brain banks for neuropathology.
Last Update 21/09/2017