Progress in blood biomarkers of subjective cognitive decline in preclinical Alzheimer's disease

Abstract. Alzheimer's disease (AD) is a neurodegenerative disease that gradually impairs cognitive functions. Recently, there has been a conceptual shift toward AD to view the disease as a continuum. Since AD is currently incurable, effective intervention to delay or prevent pathological cognit...

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Main Authors: Xianfeng Yu, Kai Shao, Ke Wan, Taoran Li, Yuxia Li, Xiaoqun Zhu, Ying Han, Yuanyuan Ji
Format: Article
Language:English
Published: Wolters Kluwer 2023-03-01
Series:Chinese Medical Journal
Online Access:http://journals.lww.com/10.1097/CM9.0000000000002566
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author Xianfeng Yu
Kai Shao
Ke Wan
Taoran Li
Yuxia Li
Xiaoqun Zhu
Ying Han
Yuanyuan Ji
author_facet Xianfeng Yu
Kai Shao
Ke Wan
Taoran Li
Yuxia Li
Xiaoqun Zhu
Ying Han
Yuanyuan Ji
author_sort Xianfeng Yu
collection DOAJ
description Abstract. Alzheimer's disease (AD) is a neurodegenerative disease that gradually impairs cognitive functions. Recently, there has been a conceptual shift toward AD to view the disease as a continuum. Since AD is currently incurable, effective intervention to delay or prevent pathological cognitive decline may best target the early stages of symptomatic disease, such as subjective cognitive decline (SCD), in which cognitive function remains relatively intact. Diagnostic methods for identifying AD, such as cerebrospinal fluid biomarkers and positron emission tomography, are invasive and expensive. Therefore, it is imperative to develop blood biomarkers that are sensitive, less invasive, easier to access, and more cost effective for AD diagnosis. This review aimed to summarize the current data on whether individuals with SCD differ reliably and effectively in subjective and objective performances compared to cognitively normal elderly individuals, and to find one or more convenient and accessible blood biomarkers so that researchers can identify SCD patients with preclinical AD in the population as soon as possible. Owing to the heterogeneity and complicated pathogenesis of AD, it is difficult to make reliable diagnoses using only a single blood marker. This review provides an overview of the progress achieved to date with the use of SCD blood biomarkers in patients with preclinical AD, highlighting the key areas of application and current challenges.
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spelling doaj.art-25f2ab900f774fb387f491c3802a31cc2023-04-24T10:07:12ZengWolters KluwerChinese Medical Journal0366-69992542-56412023-03-01136550552110.1097/CM9.0000000000002566202303050-00001Progress in blood biomarkers of subjective cognitive decline in preclinical Alzheimer's diseaseXianfeng YuKai ShaoKe WanTaoran LiYuxia LiXiaoqun ZhuYing HanYuanyuan JiAbstract. Alzheimer's disease (AD) is a neurodegenerative disease that gradually impairs cognitive functions. Recently, there has been a conceptual shift toward AD to view the disease as a continuum. Since AD is currently incurable, effective intervention to delay or prevent pathological cognitive decline may best target the early stages of symptomatic disease, such as subjective cognitive decline (SCD), in which cognitive function remains relatively intact. Diagnostic methods for identifying AD, such as cerebrospinal fluid biomarkers and positron emission tomography, are invasive and expensive. Therefore, it is imperative to develop blood biomarkers that are sensitive, less invasive, easier to access, and more cost effective for AD diagnosis. This review aimed to summarize the current data on whether individuals with SCD differ reliably and effectively in subjective and objective performances compared to cognitively normal elderly individuals, and to find one or more convenient and accessible blood biomarkers so that researchers can identify SCD patients with preclinical AD in the population as soon as possible. Owing to the heterogeneity and complicated pathogenesis of AD, it is difficult to make reliable diagnoses using only a single blood marker. This review provides an overview of the progress achieved to date with the use of SCD blood biomarkers in patients with preclinical AD, highlighting the key areas of application and current challenges.http://journals.lww.com/10.1097/CM9.0000000000002566
spellingShingle Xianfeng Yu
Kai Shao
Ke Wan
Taoran Li
Yuxia Li
Xiaoqun Zhu
Ying Han
Yuanyuan Ji
Progress in blood biomarkers of subjective cognitive decline in preclinical Alzheimer's disease
Chinese Medical Journal
title Progress in blood biomarkers of subjective cognitive decline in preclinical Alzheimer's disease
title_full Progress in blood biomarkers of subjective cognitive decline in preclinical Alzheimer's disease
title_fullStr Progress in blood biomarkers of subjective cognitive decline in preclinical Alzheimer's disease
title_full_unstemmed Progress in blood biomarkers of subjective cognitive decline in preclinical Alzheimer's disease
title_short Progress in blood biomarkers of subjective cognitive decline in preclinical Alzheimer's disease
title_sort progress in blood biomarkers of subjective cognitive decline in preclinical alzheimer s disease
url http://journals.lww.com/10.1097/CM9.0000000000002566
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