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- W3100986443 abstract "BACKGROUND/OBJECTIVES Cognitive decline associated with impaired kidney function might involve neurodegeneration. Our objectives were to evaluate the longitudinal association between kidney function and cognitive decline in older adults and to assess the involvement of cortical beta‐amyloid and hippocampal atrophy (features of Alzheimer's disease (AD)) in this association. DESIGN Secondary analysis of the randomized controlled Multidomain Alzheimer Preventive Trial (MAPT). SETTINGS Thirteen memory centers (France and Monaco, 2008–2016). PARTICIPANTS A total of 1,334 community‐dwellers >70 years old without dementia at baseline. MEASUREMENTS We estimated glomerular filtration rate (eGFR) from serum creatinine using CKD‐Epi equation. Cognition was assessed at baseline, 6, 12, 24, 36, 48, and 60 months using a composite Z‐score designed for MAPT. The Clinical Dementia Rating (CDR) score was used to assess cognition and functional independence. We examined the association between eGFR and (1) evolution of the composite cognitive Z‐score using mixed‐effect models and (2) progression on CDR using Cox models and mixed‐effect models. Adjustments were made for age, sex, education, ApoE genotype, cardiovascular risk factors and disease, hippocampal volume (measured with magnetic resonance), and cortical beta‐amyloid (measured with positron emission tomography). RESULTS Median (IQR) eGFR was 73(60–84) mL/min/1.73 m 2 . Two hundred sixty‐nine participants experienced progression on CDR score during follow‐up. eGFR<60 was significantly associated with progression on CDR score (adjusted hazard ratio (aHR) = 1.35, 95% CI 1.01–1.80) and with both the cognitive and functional independence components of CDR, but not with the evolution of the composite cognitive Z‐score (adjusted β‐coefficient −0.004, 95% CI −0.014; 0.006). Associations were not modified after further adjustment for beta‐amyloid (subsample: n = 252) and hippocampal volume (subsample: n = 270). CONCLUSIONS We did not find a mild to moderate renal insufficiency to be associated with brain imaging features of AD, and our results do not support the involvement of AD mechanisms in the incidence of cognitive impairment and functional decline associated with chronic kidney disease." @default.
- W3100986443 created "2020-11-23" @default.
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- W3100986443 date "2020-11-20" @default.
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- W3100986443 title "Kidney Function and Cognitive Decline in Older Adults: Examining the Role of Neurodegeneration" @default.
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- W3100986443 doi "https://doi.org/10.1111/jgs.16954" @default.
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