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Progress on early diagnosing Alzheimer's disease
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Alzheimer's disease(AD)is a progressive neurodegenerative disorder that affects both cognition and non-cognition functions.The disease follows a continuum,starting with preclinical stages,progressing to mild cognitive and behavioral impairment,ultimately leading to dementia.Early detection of AD is crucial for better diagnosis and more effective treatment.However,the current AD diagnostic tests of biomarkers using cerebrospinal fluid and/or brain imaging are invasive or expensive,and mostly are still not able to detect early disease state.Consequently,there is an urgent need to develop new diagnostic techniques with higher sensitivity and specificity during the preclinical stages of AD.Various non-cognitive manifestations,including behavioral abnormalities,sleep disturbances,sensory dysfunctions,and physical changes,have been observed in the preclinical AD stage before occurrence of notable cognitive decline.Recent research advances have identified several biofluid biomarkers as early indicators of AD.This review focuses on these non-cognitive changes and newly discovered biomarkers in AD,specifically addressing the preclinical stages of the disease.Furthermore,it is of importance to explore the potential for developing a predictive system or network to forecast disease onset and progression at the early stage of AD.
Yixin Chen、Murad Al-Nusaif、Song Li、Xiang Tan、Huijia Yang、Huaibin Cai、Weidong Le
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Liaoning Provincial Key Laboratory for Research on the Pathogenic Mechanisms of Neurological Diseases,The First Affiliated Hospital of Dalian Medical University,Dalian 116021,China
Transgenic Section,Laboratory of Neurogenetics,National Institute on Aging,National Institutes of Health,Bethesda,MD 20892,USA
Institute of Neurology,Sichuan Provincial People's Hospital,University of Electronic Science and Technology of China
Chinese Academy of Sciences Sichuan Translational Medicine Research Hospital,Chengdu 610072,China
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National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaIntramural Research Program of NIH,National Institute on AgingIntramural Research Program of NIH,National Institute on Aging
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