Evidence map›Paper›PMID 34312362›Full record

ArticleMedical science monitor : international medical journal of experimental and clinical research2021

The Association Between Plasma α-Synuclein (α-syn) Protein, Urinary Alzheimer-Associated Neuronal Thread Protein (AD7c-NTP), and Apolipoprotein Epsilon 4 (ApoE ε4) Alleles and Cognitive Decline in 60 Patients with Alzheimer's Disease Compared with 28 Age-Matched Normal Individuals.

Shuang Lv, Xiao Zhou, Yiming Li, Shujuan Zhang, Yu Wang, Shuhong Jia, Xiaoqian Niu, Lei Wang, Dantao Peng

Open access · hybridAbstract readComparative Study
In one paragraph

Article in Medical science monitor : international medical journal of experimental and clinical research, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
0.5field-weighted citation impact, top 37% 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

6 citing papers in PubMed, 9 citations in OpenAlex.

  1. Review
  2. Article
  3. New Research on Biomarkers in Alzheimer's Continuum.Reviews on recent clinical trials · 2025
    Review
  4. Article
  5. Review
  6. Review
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

9 authors at 4 institutions in 1 country.

Shuang LvDepartment of Neurology, Peking University China-Japan Friendship School of Clinical Medicine, Beijing, China (mainland).
Xiao ZhouDepartment of Neurology, China-Japan Friendship Hospital, Beijing, China (mainland).
Yiming LiDepartment of Cardiovascular, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China (mainland).
Shujuan ZhangDepartment of Neurology, Peking University China-Japan Friendship School of Clinical Medicine, Beijing, China (mainland).
Yu WangDepartment of Neurology, China-Japan Friendship Hospital, Beijing, China (mainland).
Shuhong JiaDepartment of Neurology, China-Japan Friendship Hospital, Beijing, China (mainland).
Xiaoqian NiuDepartment of Neurology, Peking University China-Japan Friendship School of Clinical Medicine, Beijing, China (mainland).
Lei WangDepartment of Neurology, Peking University China-Japan Friendship School of Clinical Medicine, Beijing, China (mainland).
Dantao PengDepartment of Neurology, Peking University China-Japan Friendship School of Clinical Medicine, Beijing, China (mainland).
China-Japan Friendship Hospital · CNPeking University · CNChinese Academy of Medical Sciences & Peking Union Medical College · CNDongzhimen Hospital Affiliated to Beijing University of Chinese Medicine · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

BACKGROUND Accumulating evidence has shown that alpha-synuclein (alpha-syn) pathology is involved in the pathophysiology of Alzheimer's disease (AD). This study aimed to investigate the association between the levels of plasma alpha-syn protein, urinary Alzheimer-associated neuronal thread protein (AD7c-NTP), apolipoprotein epsilon 4 (ApoE ε4) alleles and cognitive decline in 60 AD patients compared with 28 age-matched normal controls (NCs) at a single center. MATERIAL AND METHODS All participants underwent alpha-syn, apolipoprotein E (ApoE), AD7c-NTP, cholesterol (CHO), high-density lipoprotein (HDL), low-density lipoprotein (LDL) and triglycerides (TGs) analyses, neuropsychological scale assessments and neuroimaging analysis. Moreover, urine and peripheral blood samples were collected from all participants. The levels of plasma alpha-syn and AD7c-NTP were assayed using an enzyme-linked immunosorbent assay (ELISA) kit. Other test results were obtained from China-Japan Friendship Hospital. RESULTS We found that plasma alpha-syn levels were significantly different between AD patients and NCs (p=0.045). alpha-Syn levels were also associated with AD7c-NTP (r=0.231, p=0.03) but not ApoE e4 (Z=-0.147, p=0.883) levels. Neither a-syn [CHO (p=0.432), HDL (p=0.484), LDL (p=0.733) or TGs (p=0.253)] nor AD7c-NTP [CHO (p=0.867), HDL (p=0.13), LDL (p=0.57) or TGs (p=0.678)] had a relationship with lipids. CONCLUSIONS This study showed that the levels of plasma alpha-syn protein and urinary AD7c-NTP were significantly increased in AD patients compared with NCs, but not with ApoE alleles or serum lipid levels.

Indexed as

Agedalpha-SynucleinAlzheimer DiseaseApolipoprotein E4Cognitive DysfunctionFemaleHumansMaleNerve Tissue ProteinsNeuropsychological TestsAD7c-NTP protein, humanalpha-SynucleinApolipoprotein E4Nerve Tissue ProteinsSNCA protein, human

Identifiers

PMID34312362
PMCPMC8325392
OpenAlexW3185214739

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

None linked

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.