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• W2034337851 abstract "Vascular risk factors affect cerebral blood flow ( CBF) and cerebral vascular reactivity, contributing to cognitive decline. Hippocampus is vulnerable to both Alzheimer's disease (AD) pathology and ischemia; nonetheless, the information about the impact of vascular risk on hippocampal perfusion is minimal. Cognitively, healthy elderly (NL = 18, 69.9 ± 6.7 years) and subjects with mild cognitive impairment (MCI = 15, 74.9 ± 8.1 years) were evaluated for the Framingham cardiovascular risk profile ( FCRP). All underwent structural imaging and resting CBF assessment with arterial spin labeling (ASL) at 3T magnetic resonance imaging (MRI). In 24 subjects (NL = 17, MCI = 7), CBF was measured after a carbon dioxide rebreathing challenge. Across all subjects, FCRP negatively correlated with hippocampal (ρ = −0.41, P = 0.049) and global cortical (ρ = −0.46, P = 0.02) vasoreactivity to hypercapnia ( VR h ). The FCRP– VR h relationships were most pronounced in the MCI group: hippocampus (ρ = 0.77, P = 0.04); global cortex (ρ = 0.83, P = 0.02). The FCRP did not correlate with either volume or resting CBF. The hippocampal VR h was lower in MCI than in NL subjects ( Z = −2.0, P = 0.047). This difference persisted after age and FCRP correction (F [3,20] = 4.6, P = 0.05). An elevated risk for vascular pathology is associated with a reduced response to hypercapnia in both hippocampal and cortical tissue. The VR h is more sensitive to vascular burden than either resting CBF or brain volume." @default.
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• W2034337851 date "2010-09-15" @default.
• W2034337851 modified "2023-10-16" @default.
• W2034337851 title "Framingham Cardiovascular Risk Profile Correlates with Impaired Hippocampal and Cortical Vasoreactivity to Hypercapnia" @default.
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• W2034337851 doi "https://doi.org/10.1038/jcbfm.2010.145" @default.
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