血漿磷酸化tau181蛋白可用於預測阿爾茨海默氏病和額顳葉變性
作者:
小柯機器人發布時間:2020/3/9 12:20:54
近日,美國加州大學舊金山分校Adam L. Boxer等研究人員發現,血漿磷酸化tau181蛋白在阿爾茨海默氏病(AD)和額顳葉變性預測中具有診斷價值。相關論文於2020年3月2日在線發表於《自然—醫學》雜誌。
研究人員檢查了在殘基181處磷酸化的血漿tau蛋白(pTau181)是否可以區分臨床診斷或屍檢確認的AD與額顳葉變性。與對照組相比,AD中血漿中pTau181的濃度增加了3.5倍,並且與臨床診斷(接受者工作特徵區域在0.894曲線下)和屍體確認的額顳葉變性(在0.878曲線下)有所區別。血漿pTau181可以識別β-澱粉樣蛋白正電子發射斷層掃描(PET)陽性的個體,而與臨床診斷無關,並且與18F-flortaucipir PET測量的tau蛋白沉積相關。血漿pTau181對篩查與AD相關的tau病理可能有用。
據了解,隨著新型AD療法的發展,簡單、廣泛可用的篩查測試需要用於確定哪些患有認知或行為下降症狀的個體應進一步評估以開始治療。與目前批准的腦脊液或β澱粉樣蛋白PET診斷測試相比,基於血液的AD測試是一種侵入性較小,價格較低的篩查工具。
附:英文原文
Title: Diagnostic value of plasma phosphorylated tau181 in Alzheimer’s disease and frontotemporal lobar degeneration
Author: Elisabeth H. Thijssen, Renaud La Joie, Amy Wolf, Amelia Strom, Ping Wang, Leonardo Iaccarino, Viktoriya Bourakova, Yann Cobigo, Hilary Heuer, Salvatore Spina, Lawren VandeVrede, Xiyun Chai, Nicholas K. Proctor, David C. Airey, Sergey Shcherbinin, Cynthia Duggan Evans, John R. Sims, Henrik Zetterberg, Kaj Blennow, Anna M. Karydas, Charlotte E. Teunissen, Joel H. Kramer, Lea T. Grinberg, William W. Seeley, Howie Rosen, Bradley F. Boeve, Bruce L. Miller, Gil D. Rabinovici, Jeffrey L. Dage, Julio C. Rojas, Adam L. Boxer
Issue&Volume: 2020-03-02
Abstract: With the potential development of new disease-modifying Alzheimer’s disease (AD) therapies, simple, widely available screening tests are needed to identify which individuals, who are experiencing symptoms of cognitive or behavioral decline, should be further evaluated for initiation of treatment. A blood-based test for AD would be a less invasive and less expensive screening tool than the currently approved cerebrospinal fluid or amyloid β positron emission tomography (PET) diagnostic tests. We examined whether plasma tau phosphorylated at residue 181 (pTau181) could differentiate between clinically diagnosed or autopsy-confirmed AD and frontotemporal lobar degeneration. Plasma pTau181 concentrations were increased by 3.5-fold in AD compared to controls and differentiated AD from both clinically diagnosed (receiver operating characteristic area under the curve of 0.894) and autopsy-confirmed frontotemporal lobar degeneration (area under the curve of 0.878). Plasma pTau181 identified individuals who were amyloid β-PET-positive regardless of clinical diagnosis and correlated with cortical tau protein deposition measured by 18F-flortaucipir PET. Plasma pTau181 may be useful to screen for tau pathology associated with AD.
DOI: 10.1038/s41591-020-0762-2
Source: https://www.nature.com/articles/s41591-020-0762-2