Evidence map›Paper›PMID 22496755›Full record

ArticlePloS one2012

CSF-biomarkers in Olympic boxing: diagnosis and effects of repetitive head trauma.

Sanna Neselius, Helena Brisby, Annette Theodorsson, Kaj Blennow, Henrik Zetterberg, Jan Marcusson

Open access · goldAbstract readComparative Study
In one paragraph

Article in PloS one, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 127 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
127citing papers in PubMed, 4 pooled it
15.2field-weighted citation impact, top 1% 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

127 citing papers in PubMed, 4 syntheses or guidelines pooled it, 273 citations in OpenAlex.

  1. Pooled it
  2. Potential Blood-based Biomarkers for Concussion.Sports medicine and arthroscopy review · 2016
    Pooled it
  3. Elevated Serum Levels of NSE and S-100β Correlate with Increased Risk of Acute Cerebral Infarction in Asian Populations.Medical science monitor : international medical journal of experimental and clinical research · 2015
    Pooled it
  4. Pooled it
  5. Trial
  6. Review
  7. Research progress on biomarkers of traumatic brain injury.Animal models and experimental medicine · 2026
    Review
  8. Article
  9. Article
  10. Review
  11. Review
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Review
  19. Article
  20. Article

67 more citing papers are in PubMed but not listed here.

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

6 authors at 3 institutions in 1 country.

Sanna NeseliusDepartment. of Orthopaedics, Sahlgrenska University Hospital, Gothenburg, Sweden. sanna.neselius@vgregion.se
Helena Brisby
Annette Theodorsson
Kaj Blennow
Henrik Zetterberg
Jan Marcusson
Linköping University Hospital · SESahlgrenska University Hospital · SEUniversity of Gothenburg · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSports-related head trauma is common but still there is no established laboratory test used in the diagnostics of minimal or mild traumatic brain injuries. Further the effects of recurrent head trauma on brain injury markers are unknown. The purpose of this study was to investigate the relationship between Olympic (amateur) boxing and cerebrospinal fluid (CSF) brain injury biomarkers.

methodsThe study was designed as a prospective cohort study. Thirty Olympic boxers with a minimum of 45 bouts and 25 non-boxing matched controls were included in the study. CSF samples were collected by lumbar puncture 1-6 days after a bout and after a rest period for at least 14 days. The controls were tested once. Biomarkers for acute and chronic brain injury were analysed.

resultsNFL (mean ± SD, 532±553 vs 135±51 ng/L p = 0.001), GFAP (496±238 vs 247±147 ng/L p<0.001), T-tau (58±26 vs 49±21 ng/L p<0.025) and S-100B (0.76±0.29 vs 0.60±0.23 ng/L p = 0.03) concentrations were significantly increased after boxing compared to controls. NFL (402±434 ng/L p = 0.004) and GFAP (369±113 ng/L p = 0.001) concentrations remained elevated after the rest period.

conclusionIncreased CSF levels of T-tau, NFL, GFAP, and S-100B in >80% of the boxers demonstrate that both the acute and the cumulative effect of head trauma in Olympic boxing may induce CSF biomarker changes that suggest minor central nervous injuries. The lack of normalization of NFL and GFAP after the rest period in a subgroup of boxers may indicate ongoing degeneration. The recurrent head trauma in boxing may be associated with increased risk of chronic traumatic brain injury.

Indexed as

AdolescentAdultBiomarkersBoxingCase-Control StudiesCraniocerebral TraumaFemaleFollow-Up StudiesGlial Fibrillary Acidic ProteinHumansMaleNerve Growth FactorsPrognosisProspective StudiesS100 Calcium Binding Protein beta SubunitS100 ProteinsBiomarkersGlial Fibrillary Acidic ProteinMAPT protein, humanNerve Growth FactorsNSMF protein, humanS100 Calcium Binding Protein beta SubunitS100 Proteinstau ProteinsTranscription Factors

Identifiers

PMID22496755
PMCPMC3319096
OpenAlexW1964977367

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.