An inverse association of cardiovascular risk and frontal lobe glucose metabolism.
OBJECTIVE
To investigate associations between vascular risk profile and cerebral glucose metabolism.


METHODS
Subjects ranged from normal to having dementia (age >55 years) and underwent neuropsychological testing, MRI, and FDG PET scanning (n = 58). The Framingham Cardiovascular Risk Profile (FCRP) and its individual components were used as covariates in regression analyses with each PET scan using SPM2.


RESULTS
Analyses revealed broad areas of the frontal lobe in which higher FCRP was associated with lower normalized glucose metabolism including the superior medial frontal, superior frontal and superior orbital frontal cortex and the ventrolateral prefrontal cortex. Significant associations were predominately found in the left hemisphere. Independent component analyses revealed interesting regions but further confirm the relevance of the integrative measure of coronary risk.


CONCLUSIONS
Although the mechanism of this association bears further investigation, this finding provides further evidence that vascular risk factors have malignant effects on the brain, particularly in the prefrontal cortex.
Kuczynski
B
B
Helen Wills Neuroscience Institute, University of California, Berkeley, CA 94720, USA. beth.kuczynski@gmail.com
Jagust
W
W
Chui
H C
HC
Reed
B
B
D000368:Aged; D000369:Aged, 80 and over; D002318:Cardiovascular Diseases / Q000209:etiology*; D054022:Cerebrum / Q000378:metabolism; D005260:Female; D005625:Frontal Lobe / Q000378:metabolism*; D005947:Glucose / Q000378:metabolism*; D006801:Humans; D008297:Male; D012307:Risk Factors; D014018:Tissue Distribution
D005947:Glucose