Evidence map›Paper›PMID 21309726›Full record

Trial reportJournal of neurotrauma2011

Biokinetic analysis of ubiquitin C-terminal hydrolase-L1 (UCH-L1) in severe traumatic brain injury patient biofluids.

Gretchen M Brophy, Stefania Mondello, Linda Papa, Steven A Robicsek, Andrea Gabrielli, Joseph Tepas, Andras Buki, Claudia Robertson, Frank C Tortella, Ronald L Hayes and 1 more

Abstract readClinical TrialMulticenter Study
In one paragraph

Trial report in Journal of neurotrauma, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 121 papers, 8 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
121citing papers in PubMed, 8 pooled it
10.9field-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

121 citing papers in PubMed, 8 syntheses or guidelines pooled it, 239 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
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  5. Pooled it
  6. Potential Blood-based Biomarkers for Concussion.Sports medicine and arthroscopy review · 2016
    Pooled it
  7. Pooled it
  8. Pooled it
  9. Trial
  10. Trial
  11. Trial
  12. Review
  13. Article
  14. Article
  15. Research progress on biomarkers of traumatic brain injury.Animal models and experimental medicine · 2026
    Review
  16. Serum Biomarkers in Paediatric Neurosurgery: Traumatic Brain Injury and Beyond.Advances and technical standards in neurosurgery · 2026
    Article
  17. Article
  18. Observational
  19. Review
  20. Article

61 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

11 authors at 7 institutions in 2 countries.

Gretchen M BrophyVirginia Commonwealth University, Pharmacotherapy & Outcomes Sciences and Neurosurgery, Richmond, Virginia 23298-0533, USA. gbrophy@vcu.edu
Stefania Mondello
Linda Papa
Steven A Robicsek
Andrea Gabrielli
Joseph Tepas
Andras Buki
Claudia Robertson
Frank C Tortella
Ronald L Hayes
Kevin K W Wang
University of Florida · USBaylor College of Medicine · USOrlando Regional Medical Center · USUniversity of North Florida · USUniversity of Pecs · HUVirginia Commonwealth University · USWalter Reed Army Institute of Research · US

Funding

Biomarkers of Mild and Moderate Traumatic Brain InjuryR01NS057676 · NINDS · ORLANDO REGIONAL HEALTHCARE SYSTEM, INC. · PI PAPA, LINDA · 2008 to 2022
$5.8M
Biochemical Markers of Traumatic Brain InjuryR01NS052831 · NINDS · UNIVERSITY OF FLORIDA · PI ROBICSEK, STEVEN ANDREW · 2006 to 2010
$4.9M
NINDS NIH HHS R01 NS052831NINDS NIH HHS R01 NS057676
6 · The paper itself

Abstract

Ubiquitin C-terminal hydrolase-L1 (UCH-L1) is a neuron-specific enzyme that has been identified as a potential biomarker of traumatic brain injury (TBI). The study objectives were to determine UCH-L1 exposure and kinetic metrics, determine correlations between biofluids, and assess outcome correlations in severe TBI patients. Data were analyzed from a prospective, multicenter study of severe TBI (Glasgow Coma Scale [GCS] score ≤ 8). Cerebrospinal fluid (CSF) and serum data from samples taken every 6 h after injury were analyzed by enzyme-linked immunosorbent assay (ELISA). UCH-L1 CSF and serum data from 59 patients were used to determine biofluid correlations. Serum samples from 86 patients and CSF from 59 patients were used to determine outcome correlations. Exposure and kinetic metrics were evaluated acutely and up to 7 days post-injury and compared to mortality at 3 months. There were significant correlations between UCH-L1 CSF and serum median concentrations (r(s)=0.59, p<0.001), AUC (r(s)=0.3, p=0.027), Tmax (r(s)=0.68, p<0.001), and MRT (r(s)=0.65, p<0.001). Outcome analysis showed significant increases in median serum AUC (2016 versus 265 ng/mL*min, p=0.006), and Cmax (2 versus 0.4 ng/mL, p=0.003), and a shorter Tmax (8 versus 19 h, p=0.04) in those who died versus those who survived, respectively. In the first 24 h after injury, there was a statistically significant acute increase in CSF and serum median Cmax((0-24h)) in those who died. This study shows a significant correlation between UCH-L1 CSF and serum median concentrations and biokinetics in severe TBI patients, and relationships with clinical outcome were detected.

Indexed as

Severity of Illness IndexAdolescentAdultAgedBrain InjuriesFemaleHumansMaleMiddle AgedProspective StudiesUbiquitin ThiolesteraseYoung AdultUbiquitin ThiolesteraseUCHL1 protein, human

Identifiers

PMID21309726
PMCPMC3113451
OpenAlexW2166531868

What OpenQuestion holds

Textmetadata
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.