Evidence map›Paper›PMID 30372457›Full record

ArticlePloS one2018

No change in plasma tau and serum neurofilament light concentrations in adolescent athletes following sport-related concussion.

Colin Wallace, Henrik Zetterberg, Kaj Blennow, Paul van Donkelaar

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 1 pooled it
3.7field-weighted citation impact, top 6% 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

17 citing papers in PubMed, 1 synthesis or guideline pooled it, 41 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Sport-Related Concussions in High School Athletes: A Comprehensive Update.Current neurology and neuroscience reports · 2025
    Review
  4. Article
  5. Article
  6. Review
  7. Traumatic Brain Injury Biomarkers, Simulations and Kinetics.Bioengineering (Basel, Switzerland) · 2022
    Article
  8. Serum neurofilament light in professional soccer players: goal on safety.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2022
    Article
  9. Repeated Sub-Concussive Impacts and the Negative Effects of Contact Sports on Cognition and Brain Integrity.International journal of environmental research and public health · 2022
    Review
  10. Review
  11. Review
  12. Article
  13. Article
  14. Article
  15. Article
  16. Review
  17. 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

4 authors at 2 institutions in 3 countries.

Colin WallaceSchool of Health and Exercise Sciences, University of British Columbia, Kelowna, British Columbia, Canada.ORCID 0000-0002-3720-6526
Henrik ZetterbergClinical Neurochemistry Laboratory, Sahlgrenska University Hospital, Mölndal, Sweden.
Kaj BlennowClinical Neurochemistry Laboratory, Sahlgrenska University Hospital, Mölndal, Sweden.
Paul van DonkelaarSchool of Health and Exercise Sciences, University of British Columbia, Kelowna, British Columbia, Canada.
Sahlgrenska University Hospital · SEUniversity of British Columbia · CA

Funding

Canadian Institutes for Health Research 183304
6 · The paper itself

Abstract

Sport-related concussion (SRC), a mild form of traumatic brain injury (TBI), is a common injury in contact sports. Health care professionals rely on subjective criteria (e.g., symptoms), as there is no objective marker for identification of athletes with SRC. Blood-based biomarkers have shown promise as diagnostic and prognostic tools following TBI and SRC. In the present study, we examined plasma tau and serum NF-L, two biomarkers for neuronal/axonal injury, concentrations at preseason and following SRC in contact sport athletes (n = 11) using ultrasensitive single molecule array (Simoa) assays. Preseason baseline samples were collected, and post-concussion samples were obtained at 6- and 14-days following injury. We found no difference between baseline, 6-day and 14-day post-concussion concentrations of tau (p = 0.14) or NF-L (p = 0.53). Further, no difference was found between preseason baseline and all post-SRC samples for tau (p = 0.22) or NF-L (p = 0.98). The total number of symptoms reported on the Standardized Assessment of Concussion- 3rd Edition (SCAT3) and associated symptom severity scores increased from preseason to 6-days post-SRC but returned to baseline values at 14-days (p = 0.02 and p = 0.003, respectively). These results suggest that the severity of neuronal injury in this cohort of contact sport athletes with clinical uncomplicated SRC was too low to be detected by tau and NF-L measurements in blood samples obtained at 6- and 14-days post-injury.

Indexed as

AdolescentAthletic InjuriesBiomarkersBrain ConcussionFootballHockeyHumansInjury Severity ScoreMaleNeurofilament ProteinsProspective Studiestau ProteinsTime FactorsBiomarkersneurofilament protein LNeurofilament Proteinstau Proteins

Identifiers

PMID30372457
PMCPMC6205645
OpenAlexW2899322872

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.