title: Coronary risk correlates with cerebral amyloid deposition.
abstract: This study investigated the hypothesis that vascular risk factors are amyloidogenic. Participants were 43 persons, most with normal cognition or mild cognitive impairment. Vascular risk was quantified using the Framingham Coronary Risk Profile (FCRP) score. Cerebral amyloid was measured by [(11)C]Pittsburgh compound B (PIB) positron emission tomography (PET) and quantified with a Global PIB index, which is the average of distribution volume ratios in selected cortical regions of interest. In a bivariate model FCRP accounted for 16% of the variance in PIB index (p < 0.008) and the positive association remained significant controlling for age and sex. The effect of FCRP was independent of apolipoprotein E (APOE) genotype, which was also associated as expected with PIB. Carotid intima-media thickness was not associated with PIB index. Effects of individual FCRP component risk factors, cholesterol, and glycemic status on PIB index were all nonsignificant, suggesting an aggregate effect of risk factors. Although this is a correlational observation it may represent a causal relationship as there are multiple, plausible, amyloidogenic mechanisms of vascular risk factors.
authors.affiliation: Department of Neurology, School of Medicine, University of California, Davis, CA, USA. brreed@ucdavis.edu
authors.forename: Bruce R
authors.initials: BR
authors.lastname: Reed
authors.forename: Natalie L
authors.initials: NL
authors.lastname: Marchant
authors.forename: William J
authors.initials: WJ
authors.lastname: Jagust
authors.forename: Charles C
authors.initials: CC
authors.lastname: DeCarli
authors.forename: Wendy
authors.initials: W
authors.lastname: Mack
authors.forename: Helena C
authors.initials: HC
authors.lastname: Chui
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000682:Amyloid / Q000378:metabolism*; D000814:Aniline Compounds; D001057:Apolipoproteins E / Q000235:genetics; D001931:Brain Mapping; D002250:Carbon Radioisotopes; D059168:Carotid Intima-Media Thickness; D002540:Cerebral Cortex / Q000000981:diagnostic imaging / Q000378:metabolism*; D060825:Cognitive Dysfunction / Q000000981:diagnostic imaging / Q000473:pathology*; D003327:Coronary Disease / Q000175:diagnosis / Q000209:etiology*; D005260:Female; D006801:Humans; D008074:Lipoproteins / Q000378:metabolism; D008137:Longitudinal Studies; D008279:Magnetic Resonance Imaging; D008297:Male; D009483:Neuropsychological Tests; D049268:Positron-Emission Tomography; D011237:Predictive Value of Tests; D012306:Risk; D013844:Thiazoles
chemical_list: C475519:2-(4'-(methylamino)phenyl)-6-hydroxybenzothiazole; D000682:Amyloid; D000814:Aniline Compounds; D001057:Apolipoproteins E; D002250:Carbon Radioisotopes; D008074:Lipoproteins; D013844:Thiazoles
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