Evidence map›Paper›PMID 37237388›Full record

ArticleAlzheimer's research & therapy2023

Reference intervals for plasma amyloid-β, total tau, and phosphorylated tau181 in healthy elderly Chinese individuals without cognitive impairment.

Jingshan Chen, Xue Zhao, Wenyan Zhang, Tianxiang Zhang, Siting Wu, Jinghao Shao, Fu-Dong Shi

Open access · goldAbstract read
In one paragraph

Article in Alzheimer's research & therapy, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
4.9field-weighted citation impact, top 4% 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

22 citing papers in PubMed, 28 citations in OpenAlex.

  1. Review
  2. Molecular and statistical weaknesses of the p-tau217/AβJournal of molecular medicine (Berlin, Germany) · 2026
    Review
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  14. Heritability of Alzheimer's disease plasma biomarkers: A nuclear twin family design.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2025
    Article
  15. Review
  16. Article
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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

7 authors at 1 institution in 1 country.

Jingshan Chen *Department of Neurology, Institute of Neuroimmunology, Tianjin Neurological Institute, Tianjin Medical University General Hospital, Tianjin, 300052, China.
Xue Zhao *Department of Neurology, Institute of Neuroimmunology, Tianjin Neurological Institute, Tianjin Medical University General Hospital, Tianjin, 300052, China.
Wenyan ZhangDepartment of Neurology, Institute of Neuroimmunology, Tianjin Neurological Institute, Tianjin Medical University General Hospital, Tianjin, 300052, China.
Tianxiang ZhangDepartment of Neurology, Institute of Neuroimmunology, Tianjin Neurological Institute, Tianjin Medical University General Hospital, Tianjin, 300052, China.
Siting WuDepartment of Neurology, Institute of Neuroimmunology, Tianjin Neurological Institute, Tianjin Medical University General Hospital, Tianjin, 300052, China.
Jinghao ShaoDepartment of Neurology, Institute of Neuroimmunology, Tianjin Neurological Institute, Tianjin Medical University General Hospital, Tianjin, 300052, China.
Fu-Dong ShiDepartment of Neurology, Institute of Neuroimmunology, Tianjin Neurological Institute, Tianjin Medical University General Hospital, Tianjin, 300052, China. fshi@tmu.edu.cn.
Tianjin Medical University General Hospital · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPlasma amyloid-β (Aβ) peptides and tau proteins are promising biomarkers of Alzheimer's disease (AD), not only for predicting Aβ and tau pathology but also for differentiating AD from other neurodegenerative diseases. However, reference intervals for plasma biomarkers of AD in healthy elderly Chinese individuals have not yet been established.

methodsBiomarkers of AD were measured using single-molecule array (Simoa) assays in plasma samples from 193 healthy, cognitively unimpaired Chinese individuals aged 50-89 years. The 95% reference intervals for plasma Aβ42, Aβ40, t-tau, p-tau181, and derived ratios were calculated by using log-transformed parametric methods.

resultsPlasma Aβ42, Aβ40, and p-tau181 levels were positively correlated with age, while the Aβ42/Aβ40 ratio was negatively correlated with age. The 95% reference intervals for plasma Aβ42 and Aβ40 were 2.72-11.09 pg/mL and 61.4-303.9 pg/mL, respectively, and the 95% reference intervals for plasma t-tau and p-tau181 were 0.20-3.12 pg/mL and 0.49-3.29 pg/mL, respectively. The 95% reference intervals for the Aβ42/Aβ40 ratio, p-tau181/t-tau ratio, and p-tau181/Aβ42 ratio were 0.022-0.064, 0.38-6.34, and 0.05-0.55, respectively.

conclusionReference intervals for plasma biomarkers of AD may assist clinicians in making accurate clinical decisions.

Indexed as

Alzheimer DiseaseCognitive DysfunctionAgedAmyloid beta-PeptidesBiomarkersEast Asian PeopleHumanstau ProteinsAmyloid beta-PeptidesBiomarkerstau ProteinsAlzheimer’s diseaseBiomarkersCognitively normalElderlyReference intervals

Identifiers

PMID37237388
PMCPMC10214719
OpenAlexW4378384059

What OpenQuestion holds

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Registered trials

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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.