Evidence map›Paper›PMID 32801201›Full record

ArticleBMJ open2020

Association between plasma exosome neurogranin and brain structure in patients with Alzheimer's disease: a protocol study.

MengFei He, Li Sun, Wenhui Cao, Changhao Yin, Wenqiang Sun, Ping Liu, Lin Tan, Zheng Xu, Weina Zhao

Open access · goldAbstract read
In one paragraph

Article in BMJ open, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 1 pooled it
0.6field-weighted citation impact, top 33% 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

13 citing papers in PubMed, 1 synthesis or guideline pooled it, 14 citations in OpenAlex.

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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

9 authors at 1 institution in 1 country.

MengFei HeDepartment of Neurology, HongQi Hospital, Mudanjiang Medical University, Mudanjiang, China.ORCID 0000-0002-8191-5231
Li SunDepartment of Neurology, HongQi Hospital, Mudanjiang Medical University, Mudanjiang, China.
Wenhui CaoDepartment of Neurology, HongQi Hospital, Mudanjiang Medical University, Mudanjiang, China.
Changhao YinDepartment of Neurology, HongQi Hospital, Mudanjiang Medical University, Mudanjiang, China.
Wenqiang SunDepartment of Neurology, HongQi Hospital, Mudanjiang Medical University, Mudanjiang, China.
Ping LiuDepartment of Neurology, HongQi Hospital, Mudanjiang Medical University, Mudanjiang, China.
Lin TanDepartment of Neurology, HongQi Hospital, Mudanjiang Medical University, Mudanjiang, China.
Zheng XuDepartment of Neurology, HongQi Hospital, Mudanjiang Medical University, Mudanjiang, China.
Weina ZhaoDepartment of Neurology, HongQi Hospital, Mudanjiang Medical University, Mudanjiang, China weinzhao@126.com.
Mudanjiang Medical University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionNeurogranin is known to be significantly elevated in patients with Alzheimer's disease (AD) and may be an effective clinical predictor of cognitive decline and neurodegeneration. Amnestic mild cognitive impairment (aMCI) is an intermediate disease state between normal cognitive ageing and dementia, the latter of which can easily revert to AD. There remains significant uncertainty regarding the conversion of aMCI to AD, and therefore, elucidating such progression is paramount to the field of cognitive neuroscience. In this protocol study, we therefore aim to investigate the changes in plasma neurogranin in the early stage of AD and the mechanism thereof regarding the cognitive progression towards AD. METHODS AND ANALYSIS: In this study, patients with aMCI and AD patients (n=70 each) will be recruited at the memory clinic of the Department of Neurology of Hongqi Hospital affiliated with the Mudanjiang Medical University of China. Healthy older controls (n=70) will also be recruited from the community. All subjects will undergo neuroimaging and neuropsychological evaluations in addition to blood collection at the first year and the third year. We hope to identify a new biomarker of cognitive decline associated with AD and characterise its behaviour throughout the progression of aMCI to AD. This work will reveal novel targets for the therapeutic prevention, diagnosis and treatment of AD. The primary outcome measures will be (1) neuropsychological evaluation, including Mini-Mental State Examination, Montreal Cognitive Assessment, Clinical Dementia Rating scale, Shape Trail Test-A&B, Auditory Verbal Learning Test-HuaShan version; (2) microstructural alterations and hippocampal features from MRI scans; and (3) neurogranin levels in the neuronal-derived exosomes from peripheral blood samples. ETHICS AND DISSEMINATION: The ethics committee of the Hongqi Hospital affiliated with the Mudanjiang Medical University of China has approved this study protocol. The results will be published in peer-reviewed journals and presented at national or international scientific conferences. TRIAL REGISTRATION NUMBER: ChiCTR2000029055.

Indexed as

Alzheimer DiseaseBrainCognitive DysfunctionExosomesNeurograninAgedCase-Control StudiesHumansNeuropsychological TestsPlasmaResearch DesignNeurograninneurologyneuroradiologyradiology & imaging

Identifiers

PMID32801201
PMCPMC7430441
OpenAlexW3049755870

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.