Evidence map›Paper›PMID 25851891›Full record

ReviewJournal of clinical neurology (Seoul, Korea)2015

A consensus in Korea regarding a protocol to reduce preanalytical sources of variability in the measurement of the cerebrospinal fluid biomarkers of Alzheimer's disease.

Sun Ah Park, Ju Hee Kang, Eun Suk Kang, Chang Seok Ki, Jee Hoon Roh, Young Chul Youn, Seong Yoon Kim, Sang Yun Kim

Open access · diamondAbstract readReview
In one paragraph

Review in Journal of clinical neurology (Seoul, Korea), 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
1.9field-weighted citation impact, top 15% 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

11 citing papers in PubMed, 19 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

8 authors at 7 institutions in 2 countries.

Sun Ah ParkDepartment of Neurology, Soonchunhyang University Bucheon Hospital, Bucheon, Korea. sapark@schmc.ac.kr.
Ju Hee KangDepartment of Pharmacology & Clinical Pharmacology, Inha University School of Medicine, Incheon, Korea.; Department of Pathology & Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
Eun Suk KangDepartment of Laboratory Medicine & Genetics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
Chang Seok KiDepartment of Laboratory Medicine & Genetics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
Jee Hoon RohDepartment of Neurology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
Young Chul YounDepartment of Psychiatry, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
Seong Yoon KimDepartment of Neurology, Chung-Ang University Hospital, Seoul, Korea.
Sang Yun KimDepartment of Neurology, Seoul National University Bundang Hospital, Seongnam, Korea. neuroksy@snu.ac.kr.
Chung-Ang University Hospital · KRAsan Medical Center · KRBucheon University · KRInha University · KRSamsung Medical Center · KRSungkyunkwan University · KRUlsan College · KR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Cerebrospinal fluid (CSF) can provide vital informative about pathological processes occurring in the brain. In particular, the CSF concentrations of Aβ42, tTau, and pTau181 are useful for the early diagnosis of Alzheimer's disease (AD). However, many studies have demonstrated that confounding factors related to the preanalytical processing of CSF can seriously influence measurements of these AD biomarkers. It is therefore important to develop a standardized protocol for the acquisition and handling of CSF, particularly with regard to the types of tube used for collection and storage, the proper aliquot volume, blood contamination, and the number of tube transfers and freeze-thaw cycles, because these aspects of the procedure have been shown to affect AD biomarker measurements. A survey of the impact of several individual preanalytical procedures on the measurement of AD biomarkers in CSF was conducted for this review article, and the implications of the differences among them are discussed. Furthermore, following a review of the procedures used in Korean and international biomarker laboratories, a consensus was reached among a cooperative Korean multicenter research group regarding a standardized protocol for the analysis of AD biomarkers in CSF. All efforts were made to be stringent regarding the controversial issues associated with this protocol, thus minimizing the confounding influence of various factors on current investigations using established AD biomarkers and on future studies using novel biomarkers of AD and other neurodegenerative disorders.

Indexed as

Alzheimer's diseasebiomarkercerebrospinal fluidprotocolstandardization

Identifiers

PMID25851891
PMCPMC4387478
OpenAlexW1993079544

What OpenQuestion holds

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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.