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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Age+(Dordr)
2013 ; 35
(3
): 777-92
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Cardiovascular risk in cognitively preserved elderlies is associated with glucose
hypometabolism in the posterior cingulate cortex and precuneus regardless of
brain atrophy and apolipoprotein gene variations
#MMPMID22544617
Tamashiro-Duran JH
; Squarzoni P
; de Souza Duran FL
; Curiati PK
; Vallada HP
; Buchpiguel CA
; Lotufo PA
; Wajngarten M
; Menezes PR
; Scazufca M
; de Toledo Ferraz Alves TC
; Busatto GF
Age (Dordr)
2013[Jun]; 35
(3
): 777-92
PMID22544617
show ga
Cardiovascular risk factors (CVRF) possibly contribute to the emergence of
Alzheimer's disease (AD). Fluorodeoxyglucose-positron emission tomography
(FDG-PET) has been widely used to demonstrate specific patterns of reduced
cerebral metabolic rates of glucose (CMRgl) in subjects with AD and in
non-demented carriers of the apolipoprotein ?4 (APOE ?4) allele, the major
genetic risk factor for AD. However, functional neuroimaging studies
investigating the impact of CVRF on cerebral metabolism have been scarce to date.
The present FDG-PET study investigated 59 cognitively preserved elderlies divided
into three groups according to their cardiovascular risk based on the Framingham
10-year risk Coronary Heart Disease Risk Profile (low-, medium-, and high-risk)
to examine whether different levels of CVRF would be associated with reduced
CMRgl, involving the same brain regions affected in early stages of AD.
Functional imaging data were corrected for partial volume effects to avoid
confounding effects due to regional brain atrophy, and all analyses included the
presence of the APOE ?4 allele as a confounding covariate. Significant cerebral
metabolism reductions were detected in the high-risk group when compared to the
low-risk group in the left precuneus and posterior cingulate gyrus. This suggests
that findings of brain hypometabolism similar to those seen in subjects with AD
can be detected in association with the severity of cardiovascular risk in
cognitively preserved individuals. Thus, a greater knowledge about how such
factors influence brain functioning in healthy subjects over time may provide
important insigths for the future development of strategies aimed at delaying or
preventing the vascular-related triggering of pathologic brain changes in the AD.