Evidence map›Paper›PMID 33748497›Full record

ArticleHeliyon2021

Comparison of multiplex cytokine assays in a pediatric cohort with epilepsy.

Adam L Numis, Christine H Fox, Daniel J Lowenstein, Philip J Norris, Clara Di Germanio

Abstract read
In one paragraph

Article in Heliyon, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 2 pooled it
–field-weighted citation impact
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

13 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Trial
  4. Article
  5. Observational
  6. Effects of pre- and postnatal probiotic and ω-3 fatty acid supplementation on cytokine and chemokine responses to allergens and TLR ligands during infancy.Allergy, asthma, and clinical immunology : official journal of the Canadian Society of Allergy and Clinical Immunology · 2026
    Article
  7. Charting the Next Road Map for CSF Biomarkers in Alzheimer's Disease and Related Dementias.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2023
    Review
  8. Article
  9. Review
  10. Review
  11. High-throughput proteomics: a methodological mini-review.Laboratory investigation; a journal of technical methods and pathology · 2022
    Review
  12. Article
  13. Article
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.

Adam L NumisUniversity of California, San Francisco, Department of Neurology & Pediatrics, 675 Nelson Rising Lange, San Francisco, CA 94158 USA.
Christine H FoxUniversity of California, San Francisco, Department of Neurology & Pediatrics, 675 Nelson Rising Lange, San Francisco, CA 94158 USA.
Daniel J LowensteinDepartment of Neurology, University of California, San Francisco USA.
Philip J NorrisVitalant Research Institute, 270 Masonic Avenue, San Francisco, CA 94118-4417 USA.
Clara Di GermanioVitalant Research Institute, 270 Masonic Avenue, San Francisco, CA 94118-4417 USA.

Funding

Evaluating the Role of Inflammation in Neonatal EpileptogenesisK23NS105918 · NINDS · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI NUMIS, ADAM LAWRENCE · 2019 to 2023
$1.1M
NINDS NIH HHS K23 NS105918
6 · The paper itself

Abstract

backgroundMultiplex analyses allow for detection of dozens of cytokines/chemokines in small sample volumes. Although several commercially available assay kits are available, there are no comparative data in plasma measurements among pediatric or epilepsy cohorts. NEW

methodCohort study of 38 children with epilepsy. We evaluated plasma levels of cytokines/chemokines using three different assays: Luminex® xMAP high-sensitivity (HS) and standard-sensitivity (SS) assays, and Meso-Scale Discovery (MSD). We calculated recovery rates of each analyte, correlation coefficients between assays, and level of agreement between measurements. We repeated analyses in a subset of samples after a single freeze-thaw cycle.

resultsAmong ten analytes common to all assays, HS had high recovery (<15% of values extrapolated or out-of- range [OOR]) for all analytes, SS for 50%, and MSD for 40%. While several analytes had a high correlation between assays, Bland-Altman plots demonstrated assays were not interchangeable. For most analytes, a single freeze-thaw cycle decreased cytokines/chemokine measurements. There was good correlation of measurements after a freeze-thaw cycle with acceptable agreement between measurements for six of 13 (46%) analytes using HS, one of 9 (11%) for SS, and none for MSD. COMPARISON WITH EXISTING

methodsHS assays may optimize yield in plasma for proteins of particular interest in epilepsy research, limit values extrapolated beyond the standard curve, and improve precision compared to other SS and MSD assays.

conclusionOur results demonstrate assay choice may be critical to study results and support the need for a standardized approach to biomarker assessment across epilepsy research and other domains.

Indexed as

ChemokinesCytokinesLuminexMeso-scale discoveryNeuro-inflammationPediatric epilepsy

Identifiers

PMID33748497
PMCPMC7966851

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.