Evidence map›Paper›PMID 30684956›Full record

Observational studyJournal of neuroinflammation2019

Evidence of a distinct peripheral inflammatory profile in sport-related concussion.

Alex P Di Battista, Nathan Churchill, Shawn G Rhind, Doug Richards, Michael G Hutchison

Open access · goldAbstract readObservational Study
In one paragraph

Observational study in Journal of neuroinflammation, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed, 1 pooled it
4.8field-weighted citation impact, top 5% 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

23 citing papers in PubMed, 1 synthesis or guideline pooled it, 54 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

5 authors at 3 institutions in 1 country.

Alex P Di BattistaFaculty of Kinesiology & Physical Education, University of Toronto, Toronto, ON, Canada. alex.dibattista@utoronto.ca.ORCID http://orcid.org/0000-0002-3325-6833
Nathan ChurchillNeuroscience Program, Keenan Research Centre for Biomedical Science of St. Michael's Hospital, Toronto, ON, Canada.
Shawn G RhindFaculty of Kinesiology & Physical Education, University of Toronto, Toronto, ON, Canada.
Doug RichardsFaculty of Kinesiology & Physical Education, University of Toronto, Toronto, ON, Canada.
Michael G HutchisonFaculty of Kinesiology & Physical Education, University of Toronto, Toronto, ON, Canada.
Defence Research and Development Canada · CASt. Michael's Hospital · CAUniversity of Toronto · CA

Funding

Canadian Institute of Military and Veterans Health Research Task 7
6 · The paper itself

Abstract

backgroundInflammation is considered a hallmark of concussion pathophysiology in experimental models, yet is understudied in human injury. Despite the growing use of blood biomarkers in concussion, inflammatory biomarkers have not been well characterized. Furthermore, it is unclear if the systemic inflammatory response to concussion differs from that of musculoskeletal injury. The purpose of this paper was to characterize systemic inflammation after injury in athletes with sport-related concussion or musculoskeletal injury.

methodsA prospective, observational cohort study was conducted employing 175 interuniversity athletes (sport-related concussion, n = 43; musculoskeletal injury, n = 30; healthy, n = 102) from 12 sports at a sports medicine clinic at an academic institution. High-sensitivity immunoassay was used to evaluate 20 inflammatory biomarkers in the peripheral blood of athletes within 7 days of injury (subacute) and at medical clearance. Healthy athletes were sampled prior to the start of their competitive season. Partial least squares regression analyses were used to identify salient biomarker contributions to class separation between injured and healthy athletes, as well as to evaluate the relationship between biomarkers and days to recovery in injured athletes.

resultsIn the subacute period after injury, compared to healthy athletes, athletes with sport-related concussion had higher levels of the chemokines' monocyte chemoattractant protein-4 (p < 0.001) and macrophage inflammatory protein-1β (p = 0.001); athletes with musculoskeletal injury had higher levels of thymus and activation-regulated chemokine (p = 0.001). No significant differences in biomarker profiles were observed at medical clearance. Furthermore, concentrations of monocyte chemoattractant protein-1 (p = 0.007) and monocyte chemoattractant protein-4 (p < 0.001) at the subacute time point were positively correlated with days to recovery in athletes with sport-related concussion, while thymus and activation-regulated chemokine was (p = 0.001) positively correlated with days to recovery in athletes with musculoskeletal injury.

conclusionSport-related concussion is associated with perturbations to systemic inflammatory chemokines that differ from those observed in athletes with a musculoskeletal injury. These results support inflammation as an important facet of secondary injury after sport-related concussion that can be measured systemically in a human model of injury.

Indexed as

Athletic InjuriesBrain ConcussionChemokine CCL4FemaleHumansMaleMonocyte Chemoattractant ProteinsMusculoskeletal DiseasesSeverity of Illness IndexSex FactorsSystemic Inflammatory Response SyndromeYoung AdultCCL13 protein, humanCCL4 protein, humanChemokine CCL4Monocyte Chemoattractant ProteinsBiomarkersChemokinesConcussionCytokinesInflammation

Identifiers

PMID30684956
PMCPMC6347801
OpenAlexW2913331433

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.