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Impact of vascular risk factors and diseases on cognition in persons with mild cognitive impairment

Sylvia Villeneuve1, Sylvie Belleville, Fadi Massoud

  • 1Research Center, Institut Universitaire de Gériatrie de Montréal, Que., Canada.

Dementia and Geriatric Cognitive Disorders
|March 27, 2009
PubMed
Abstract

Insights

Vascular burden significantly impacts cognition in individuals with amnestic mild cognitive impairment (aMCI). Higher vascular burden is linked to worse executive function and a greater likelihood of multiple cognitive domain impairment in aMCI patients.

Area of Science:

  • Neurology
  • Cognitive Science
  • Vascular Health

Background:

  • Amnestic mild cognitive impairment (aMCI) is a transitional stage between normal aging and dementia.
  • Vascular burden, encompassing risk factors and diseases, is increasingly recognized as a contributor to cognitive decline.

Purpose of the Study:

  • To examine the relationship between vascular burden and cognitive function in individuals with aMCI.
  • To determine if vascular burden influences the subtype of aMCI (single vs. multiple domain).

Main Methods:

  • A cohort of 145 participants, including 68 with aMCI and 77 matched controls, was studied.
  • Cognitive performance was assessed across four domains: executive functions, processing speed, episodic memory, and general cognitive functioning.
  • Vascular burden was quantified by the number of vascular risk factors and diseases.

Main Results:

  • A significant correlation was found between higher vascular burden and poorer performance in the executive cognitive domain among individuals with aMCI.
  • Participants with aMCI and high vascular burden were more often classified as having multiple cognitive domain impairment.
  • Conversely, individuals with aMCI and no vascular burden were more frequently classified as having single domain impairment.

Conclusions:

  • The cumulative effect of vascular risk factors and diseases exacerbates executive impairment in aMCI.
  • Vascular burden is a key factor contributing to the diverse cognitive profiles observed in aMCI, affecting functions beyond episodic memory.

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