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A Machine Learning Approach to Design an Efficient Selective Screening of Mild Cognitive Impairment
Published on: January 11, 2020
Mild cognitive impairment: believe it or not?
Ricardo F Allegri1, Frank B Glaser, Fernando E Taragano
1Servicio de Neuropsicologia SIREN, y Unidad de Investigacion Rene Baron del Instituto Universitario CEMIC, Buenos Aires, Argentina. rallegri@cemic.edu.ar
Abstract:
Mild cognitive impairment (MCI) was previously defined as a transitional state that can precede dementia, but the condition and the rates of conversion remain controversial. MCI is now the focus of natural history studies, along with Alzheimer's disease (AD) prevention. The objective of our review will be to consider the question of whether MCI is a well enough established entity that it can be a diagnosis in medical practice and a valid target of Alzheimer's prevention therapy. MCI was originally defined by Petersen et al. (1999) as progressive memory loss, prodrome of Alzheimer's disease. More recently MCI has been expanded to other cognitive domains with other potential causes like normal aging, fronto-temporal dementia, and vascular dementia. Despite many consensus conferences, experts cannot agree on critical aspects of the MCI, particularly with respect to its clinical utility. Based on neuropsychological studies, a hippocampal memory profile has been proposed for MCI as prodromal AD. Further research is needed to advance these criteria. We have no doubt, however, that in the future, the diagnosis of AD as disease (not only a dementia syndrome) will be made in the early pre-dementia stage and will be drawn from a combination of neuropsychological, neuro-imaging and CSF biomarkers.
Insights
Mild cognitive impairment (MCI) is a controversial transitional state before dementia. Further research is needed to establish MCI as a clinical diagnosis and target for Alzheimer's disease prevention therapies.
Area of Science:
- Neurology
- Gerontology
- Cognitive Science
Background:
- Mild cognitive impairment (MCI) is debated as a transitional state preceding dementia.
- Current definitions and conversion rates of MCI remain controversial.
- MCI is a focus for Alzheimer's disease (AD) natural history and prevention studies.
Purpose of the Study:
- To evaluate MCI as an established medical diagnosis.
- To assess MCI as a valid target for Alzheimer's prevention therapy.
Main Methods:
- Review of existing literature and consensus conference findings on MCI.
- Analysis of neuropsychological studies proposing a hippocampal memory profile for MCI.
- Consideration of diagnostic criteria for MCI and prodromal AD.
Main Results:
- Experts disagree on critical aspects of MCI, including its clinical utility.
- A hippocampal memory profile is proposed for MCI as prodromal AD, requiring further validation.
- Consensus on MCI diagnostic criteria remains elusive despite numerous conferences.
Conclusions:
- MCI's status as a distinct clinical diagnosis and therapeutic target is uncertain.
- Further research is essential to refine MCI diagnostic criteria.
- Future Alzheimer's disease diagnosis will likely integrate neuropsychological, neuro-imaging, and CSF biomarkers in early, pre-dementia stages.
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