Evidence map›Paper›PMID 32660565›Full record

ArticleAlzheimer's research & therapy2020

CSF total tau/α-synuclein ratio improved the diagnostic performance for Alzheimer's disease as an indicator of tau phosphorylation.

Kyu Hwan Shim, Min Ju Kang, Jee Won Suh, Jung-Min Pyun, Nayoung Ryoo, Young Ho Park, Young Chul Youn, Jae-Won Jang, Jee Hyang Jeong, Kyung Won Park and 9 more

Open access · goldAbstract read
In one paragraph

Article in Alzheimer's research & therapy, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
1.3field-weighted citation impact, top 16% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

16 citing papers in PubMed, 24 citations in OpenAlex.

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  9. The recency ratio assessed by story recall is associated with cerebrospinal fluid levels of neurodegeneration biomarkers.Cortex; a journal devoted to the study of the nervous system and behavior · 2023
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

19 authors at 11 institutions in 1 country.

Kyu Hwan ShimDepartment of Neurology, Veterans Medical Research Institute, Veterans Health Service Medical Center, Seoul, Republic of Korea.
Min Ju KangDepartment of Neurology, Veterans Medical Research Institute, Veterans Health Service Medical Center, Seoul, Republic of Korea.
Jee Won SuhDepartment of Neurology, Seoul National University Bundang Hospital and Seoul National University College of Medicine, Seongnam-si, Gyeonggi-do, Republic of Korea.
Jung-Min PyunDepartment of Neurology, Seoul National University Bundang Hospital and Seoul National University College of Medicine, Seongnam-si, Gyeonggi-do, Republic of Korea.
Nayoung RyooDepartment of Neurology, Seoul National University Bundang Hospital and Seoul National University College of Medicine, Seongnam-si, Gyeonggi-do, Republic of Korea.
Young Ho ParkDepartment of Neurology, Seoul National University Bundang Hospital and Seoul National University College of Medicine, Seongnam-si, Gyeonggi-do, Republic of Korea.
Young Chul YounDepartment of Neurology, Chung-Ang University Hospital, Seoul, Republic of Korea.
Jae-Won JangDepartment of Neurology, Kangwon National University Hospital, Kangwon National University School of Medicine, Chouncheon, South Korea.
Jee Hyang JeongDepartment of Neurology, Ewha Womans University Mokdong HospitalEwha Womans University, Seoul, Republic of Korea.
Kyung Won ParkDepartment of Neurology, Dong-A University College of Medicine and Institute of Convergence Bio-Health, Busan, Republic of Korea.
Seong Hye ChoiDepartment of Neurology, Inha University School of Medicine, Incheon, Republic of Korea.
Kyoungho SukDepartment of Pharmacology, Kyungpook National University School of Medicine, Daegu, Republic of Korea.
Ho-Won LeeDepartment of Neurology, Kyungpook National University School of Medicine, Daegu, Republic of Korea.
Pan-Woo KoDepartment of Neurology, Kyungpook National University School of Medicine, Daegu, Republic of Korea.
Chan-Nyoung LeeDepartment of Neurology, Korea University Medicine, Seoul, Republic of Korea.
Tae-Sung LimDepartment of Neurology, Ajou University School of Medicine, Suwon, Republic of Korea.
Seong Soo A AnDepartment of Bionano Technology, Gachon University, Seongnam-si, Gyeonggi-do, Republic of Korea. seong.an@gmail.com.
SangYun KimDepartment of Neurology, Seoul National University Bundang Hospital and Seoul National University College of Medicine, Seongnam-si, Gyeonggi-do, Republic of Korea. neuroksy@snu.ac.kr.
Alzheimer’s Disease All Markers (ADAM) Research group
Seoul National University Bundang Hospital · KRKyungpook National University · KRVeterans Health Service Medical Center · KRAjou University · KRChung-Ang University Hospital · KRDong-A University · KREwha Womans University · KRGachon University · KRInha University · KRKangwon National University Hospital · KRKorea University · KR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundRecently, several studies suggested potential involvements of α-synuclein in Alzheimer's disease (AD) pathophysiology. Higher concentrations of α-synuclein were reported in cerebrospinal fluid (CSF) of AD patients with a positive correlation towards CSF tau, indicating its possible role in AD. We analyzed the CSF biomarkers to verify whether α-synuclein could be an additional supported biomarker in AD diagnosis.

methodsIn this cross-sectional study, CSF samples of 71 early-onset AD, 34 late-onset AD, 11 mild cognitive impairment, 17 subjective cognitive decline, 45 Parkinson's disease, and 32 healthy control (HC) were collected. CSF amyloid-β1-42 (A), total tau (N), and phosphorylated tau181 (T) were measured by commercial ELISA kits, and in-house ELISA kit was developed to quantify α-synuclein. The cognitive assessments and amyloid-PET imaging were also performed.

resultsCSF α-synuclein manifested a tendency to increase in AD and to decreased in Parkinson's disease compared to HC. The equilibrium states of total tau and α-synuclein concentrations were changed significantly in AD, and the ratio of total tau/α-synuclein (N/αS) was dramatically increased in AD than HC. Remarkably, N/αS revealed a strong positive correlation with tau phosphorylation rate. Also, the combination of N/αS with amyloid-β1-42/phosphorylated tau181 ratio had the best diagnosis performance (AUC = 0.956, sensitivity = 96%, specificity = 87%). In concordance analysis, N/αS showed the higher diagnostic agreement with amyloid-β1-42 and amyloid-PET. Analysis of biomarker profiling with N/αS had distinctive characteristics and clustering of each group. Especially, among the group of suspected non-Alzheimer's disease pathophysiology, all A-T+N+ patients with N/αS+ were reintegrated into AD.

conclusionsThe high correlation of α-synuclein with tau and the elevated N/αS in AD supported the involvement of α-synuclein in AD pathophysiology. Importantly, N/αS improved the diagnostic performance, confirming the needs of incorporating α-synuclein as a biomarker for neurodegenerative disorders. The incorporation of a biomarker group [N/αS] could contribute to provide better understanding and diagnosis of neurodegenerative disorders.

Indexed as

alpha-SynucleinAlzheimer DiseaseAmyloid beta-PeptidesBiomarkersCross-Sectional StudiesHumansPeptide FragmentsPhosphorylationtau Proteinsalpha-SynucleinAmyloid beta-PeptidesBiomarkersPeptide Fragmentstau ProteinsAlzheimer’s diseaseBiomarkerCerebrospinal fluidTauα-Synuclein

Identifiers

PMID32660565
PMCPMC7359621
OpenAlexW3041109381

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.