GERO cohort protocol, Chile, 2017-2022: community-based cohort of functional decline in subjective cognitive complaint elderly

Andrea Slachevsky, Pedro Zitko, David Martínez-Pernía, Gonzalo Forno, Felipe A. Court, Patricia Lillo, Roque Villagra, Claudia Duran-Aniotz, Teresa Parrao, Rodrigo Assar, Paulina Orellana, Carolina Toledo, Rodrigo Rivera, Agustin Ibanez, Mario A. Parra, Christian Gonzalez-Gonzalez-Billault, Helena Amieva, Daniela Thumala

Research output: Contribution to journalArticle

Abstract

Background: With the global population aging and life expectancy increasing, dementia has turned a priority in the health care system. In Chile, dementia is one of the most important causes of disability in the elderly and the most rapidly growing cause of death in the last twenty years. Cognitive complaint is considered a predictor for cognitive and functional decline, incident mild cognitive impairment, and incident dementia. The GERO cohort is the Chilean core clinical project of the Geroscience Center for Brain Health and Metabolism (GERO). The objective of the GERO cohort is to analyze the rate of functional decline and progression to clinical dementia and their associated risk factors in a community-dwelling elderly with subjective cognitive complaint, through a population-based study. We also aim to undertake clinical research on brain ageing and dementia disorders, to create data and biobanks with the appropriate infrastructure to conduct other studies and facilitate to the national and international scientific community access to the data and samples for research.Methods: The GERO cohort aims the recruitment of 300 elderly subjects (>70 years) from Santiago (Chile), following them up for at least 3 years. Eligible people are adults not diagnosed with dementia with subjective cognitive complaint, which are reported either by the participant, a proxy or both. Participants are identified through a household census. The protocol for evaluation is based on a multidimensional approach including sociodemographic, biomedical, psychosocial, neuropsychological, neuropsychiatric and motor assessments. Neuroimaging, blood and stool samples are also obtained. This multidimensional evaluation is carried out in a baseline and 2 follow-ups assessments, at 18 and 36 months. In addition, in months 6, 12, 24, and 30, a telephone interview is performed in order to keep contact with the participants and to assess general well-being.Discussion: Our work will allow us to determine multidimensional risks factors associated with functional decline and conversion to dementia in elderly with subjective cognitive complain. The aim of our GERO group is to establish the capacity to foster cutting edge and multidisciplinary research on aging in Chile including basic and clinical research.
Original languageEnglish
Article number505
Number of pages13
JournalBMC Geriatrics
Volume20
DOIs
Publication statusPublished - 25 Nov 2020

Keywords

  • cognitive aging
  • subjective cognitive complaint
  • dementia
  • Alzhimer functional decline
  • geroscience

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