Cerebral MRI findings and cognitive functioning: the Atherosclerosis Risk in Communities study.
Neurology
; 64(12): 2056-62, 2005 Jun 28.
Article
in En
| MEDLINE
| ID: mdl-15985571
ABSTRACT
OBJECTIVE:
To examine the association between prevalent cerebral abnormalities identified on MRI and cognitive functioning in a predominantly middle-aged, population-based study cohort.METHODS:
Cerebral MRI was performed on 1,538 individuals (aged 55 to 72) from the Atherosclerosis Risk in Communities (ARIC) cohort, with no history of stroke or TIA, at study sites in Forsyth County, NC, and Jackson, MS. White matter hyperintensities (WMHs), ventricular size, and sulcal size were graded by trained neuroradiologists on a semiquantitative, 10-point scale. Cognitive functioning was assessed using the Delayed Word Recall Test (DWRT), Digit Symbol Substitution Test (DSST), and Word Fluency Test (WFT).RESULTS:
High ventricular grade was independently associated with significantly lower scores on the DWRT and DSST and greater risk (odds ratio [OR] 2.32, 95% confidence interval [CI] 1.51 to 3.56) of impaired scores (i.e., < or =10th percentile) on the DWRT. High sulcal grade was associated with a modest decrement in scores on the DWRT. The presence of coexisting high grade WMHs and silent infarcts was independently associated with lower scores on all cognitive tests and greater risk of impaired functioning on the DSST (OR 2.91, 95% CI 1.23 to 6.89) and WFT (OR 2.28, 95% CI 1.03 to 5.08). The presence of two or more high-grade abnormalities was associated with increased risk of impaired functioning on all cognitive tests (DWRT OR 2.23, 95% CI 1.40 to 3.55; DSST OR 2.06, 95% CI 1.13 to 3.76; WFT OR 2.07, 95% CI 1.23 to 3.49) independent of multiple covariates and silent infarcts.CONCLUSION:
Common changes in brain morphology are associated with diminished cognitive functioning in middle-aged and young-elderly individuals.
Search on Google
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Cerebral Cortex
/
Cerebrovascular Disorders
/
Cognition Disorders
/
Atherosclerosis
Type of study:
Diagnostic_studies
/
Etiology_studies
/
Incidence_studies
/
Observational_studies
/
Prognostic_studies
/
Risk_factors_studies
Limits:
Aged
/
Aged80
/
Female
/
Humans
/
Male
/
Middle aged
Country/Region as subject:
America do norte
Language:
En
Journal:
Neurology
Year:
2005
Document type:
Article
Affiliation country:
Estados Unidos