Mild cognitive impairment: an overview

Ronald C Petersen1, Selamawit Negash

  • 1Alzheimer's Disease Research Center, Mayo Clinic College of Medicine, Rochester, MN 55905, USA. peter8@mayo.edu

CNS Spectrums
|January 22, 2008
PubMed

Insights

Mild cognitive impairment (MCI) is a stage between normal aging and dementia. Research explores MCI subtypes, progression factors, and interventions to aid early diagnosis and future dementia prevention strategies.

Area of Science:

  • Neurology
  • Gerontology
  • Cognitive Science

Background:

  • Mild cognitive impairment (MCI) represents a critical transitional phase between normal cognitive aging and early-stage dementia.
  • MCI is a significant area of research due to its association with an accelerated progression to dementia and Alzheimer's disease.

Purpose of the Study:

  • To present an algorithm for clinical identification and subclassification of MCI subtypes.
  • To discuss factors influencing MCI progression, including genetic, neuroimaging, biomarker, and clinical characteristics.
  • To review neuropathological findings, clinical trials, and interventions for MCI.

Main Methods:

  • Literature review of population-based studies, clinical trials, and neuropathological research.
  • Development of a clinical algorithm for MCI identification and subtyping.
  • Analysis of progression factors and intervention outcomes.

Main Results:

  • MCI subtypes are proposed to encompass prodromal dementia forms.
  • Various factors (genetic, imaging, biomarkers, clinical) are identified as progression indicators.
  • Clinical trials and interventions (neuropsychological, nutritional) have been evaluated.

Conclusions:

  • MCI serves as a crucial diagnostic target for early intervention.
  • Further research is needed to refine clinical utility and predictive accuracy.
  • Understanding MCI progression is key to developing effective dementia prevention strategies.

Related Concept Videos

Alzheimer's Disease: Overview01:26

Alzheimer's Disease: Overview

Alzheimer's Disease (AD) is a continually advancing neurodegenerative disorder, distinguished by escalating memory loss, cognitive dysfunction, and dementia. The disease unfolds in three stages: preclinical, mild cognitive impairment (MCI), and dementia. Its onset is insidious, and the progression gradual, with the cause not well explained by other disorders.
The clinical diagnosis of AD hinges on the presence of memory and other cognitive impairments. Biomarkers, such as changes in Aβ and tau...
Dementia l: Introduction01:22

Dementia l: Introduction

Dementia is an acquired, progressive syndrome characterized by a decline in multiple cognitive domains severe enough to impair daily functioning and reduce independence. Although memory loss is a central feature, the diagnosis requires additional deficits involving language, executive function, visuospatial skills, judgment, calculation, or abstract reasoning. These cognitive impairments reflect underlying neurodegenerative or vascular processes that gradually disrupt neuronal networks...
Cognitive Development During Adulthood01:30

Cognitive Development During Adulthood

Cognitive development continues throughout adulthood, undergoing significant shifts across early, middle, and late stages. Individual transition occurs from adolescent idealism to pragmatic and adaptable thinking in early adulthood. During this period, individuals learn to integrate personal beliefs with the recognition that other perspectives are equally valid. Exposure to the complexities of modern society, diverse experiences, and higher education contribute to this adaptive thought process,...
Cognitive Enhancers: Cholinesterase Inhibitors and NMDA Receptor Antagonists01:30

Cognitive Enhancers: Cholinesterase Inhibitors and NMDA Receptor Antagonists

Cognitive enhancers, also known as "smart drugs," are substances used to enhance memory, mental alertness, and concentration. These can be natural or synthetic and improve cognition in conditions like Alzheimer's disease (AD) and other neurodegenerative diseases. Some common examples include caffeine, amphetamines, methylphenidate, modafinil, arecoline, donepezil, vortioxetine, and piracetam. These enhancers work on the principle of synaptic plasticity and altered circuit function. They...
Dementia01:30

Dementia

Dementia is a collective term for cognitive disorders primarily affecting memory, thinking, and reasoning. It is not a specific disease but a syndrome, with Alzheimer's disease being the most common cause, accounting for approximately 60-80% of cases. Other types include vascular dementia, Lewy body dementia, and frontotemporal dementia. Dementia affects millions worldwide, particularly older adults, though it is not a normal part of aging.
The progression of dementia is generally gradual.
Intellectual Disability01:29

Intellectual Disability

Intellectual disability (ID) is a neurodevelopmental condition characterized by deficits in intellectual and adaptive functioning that manifest during the developmental period. This condition encompasses challenges in reasoning, memory, problem-solving, and learning, accompanied by impairments in everyday life skills, such as communication, self-care, and social interactions. Intellectual disability affects approximately 1% of the population in the United States, impacting an estimated 5...