Clusterin as a Potential Biomarker of Obesity-Related Alzheimer’s Disease Risk

Over 35% of the adult US population is obese. In turn, excess adiposity increases the risk of multiple complications including type 2 diabetes (T2D), insulin resistance, and cardiovascular disease; yet, obesity also independently heightens risk of Alzheimer’s Disease (AD), even after adjusting for o...

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Main Author: David Bradley
Format: Article
Language:English
Published: SAGE Publishing 2020-10-01
Series:Biomarker Insights
Online Access:https://doi.org/10.1177/1177271920964108
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author David Bradley
author_facet David Bradley
author_sort David Bradley
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description Over 35% of the adult US population is obese. In turn, excess adiposity increases the risk of multiple complications including type 2 diabetes (T2D), insulin resistance, and cardiovascular disease; yet, obesity also independently heightens risk of Alzheimer’s Disease (AD), even after adjusting for other important confounding risk factors including blood pressure, sociodemographics, cholesterol levels, smoking status, and Apolipoprotein E (ApoE) genotype. Among patients over the age of 65 with dementia, 37% have coexisting diabetes, and an estimated 7.3% of cases of AD are directly attributable to midlife obesity. Clusterin, also known as apolipoprotein J (ApoJ), is a multifunctional glycoprotein that acts as a molecular chaperone, assisting folding of secreted proteins. Clusterin has been implicated in several physiological and pathological states, including AD, metabolic disease, and cardiovascular disease. Despite long-standing interest in elucidating clusterin’s relationship with amyloid beta (Aβ) aggregation/clearance and toxicity, significant knowledge gaps still exist. Altered clusterin expression and protein levels have been linked with cognitive and memory function, disrupted central nervous system lipid flux, as well as pathogenic brain structure; and its role in cardiometabolic disease suggests that it may be a link between insulin resistance, dyslipidemia, and AD. Here, we briefly highlight clusterin’s relevance to AD by presenting existing evidence linking clusterin to AD and cardiometabolic disease, and discussing its potential utility as a biomarker for AD in the presence of obesity-related metabolic disease.
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spelling doaj.art-3b50e3cfacc04ad48ac459fac227c29b2022-12-22T00:41:06ZengSAGE PublishingBiomarker Insights1177-27192020-10-011510.1177/1177271920964108Clusterin as a Potential Biomarker of Obesity-Related Alzheimer’s Disease RiskDavid BradleyOver 35% of the adult US population is obese. In turn, excess adiposity increases the risk of multiple complications including type 2 diabetes (T2D), insulin resistance, and cardiovascular disease; yet, obesity also independently heightens risk of Alzheimer’s Disease (AD), even after adjusting for other important confounding risk factors including blood pressure, sociodemographics, cholesterol levels, smoking status, and Apolipoprotein E (ApoE) genotype. Among patients over the age of 65 with dementia, 37% have coexisting diabetes, and an estimated 7.3% of cases of AD are directly attributable to midlife obesity. Clusterin, also known as apolipoprotein J (ApoJ), is a multifunctional glycoprotein that acts as a molecular chaperone, assisting folding of secreted proteins. Clusterin has been implicated in several physiological and pathological states, including AD, metabolic disease, and cardiovascular disease. Despite long-standing interest in elucidating clusterin’s relationship with amyloid beta (Aβ) aggregation/clearance and toxicity, significant knowledge gaps still exist. Altered clusterin expression and protein levels have been linked with cognitive and memory function, disrupted central nervous system lipid flux, as well as pathogenic brain structure; and its role in cardiometabolic disease suggests that it may be a link between insulin resistance, dyslipidemia, and AD. Here, we briefly highlight clusterin’s relevance to AD by presenting existing evidence linking clusterin to AD and cardiometabolic disease, and discussing its potential utility as a biomarker for AD in the presence of obesity-related metabolic disease.https://doi.org/10.1177/1177271920964108
spellingShingle David Bradley
Clusterin as a Potential Biomarker of Obesity-Related Alzheimer’s Disease Risk
Biomarker Insights
title Clusterin as a Potential Biomarker of Obesity-Related Alzheimer’s Disease Risk
title_full Clusterin as a Potential Biomarker of Obesity-Related Alzheimer’s Disease Risk
title_fullStr Clusterin as a Potential Biomarker of Obesity-Related Alzheimer’s Disease Risk
title_full_unstemmed Clusterin as a Potential Biomarker of Obesity-Related Alzheimer’s Disease Risk
title_short Clusterin as a Potential Biomarker of Obesity-Related Alzheimer’s Disease Risk
title_sort clusterin as a potential biomarker of obesity related alzheimer s disease risk
url https://doi.org/10.1177/1177271920964108
work_keys_str_mv AT davidbradley clusterinasapotentialbiomarkerofobesityrelatedalzheimersdiseaserisk