Evidence map›Paper›PMID 33469455›Full record

ArticleFrontiers in immunology2020

Rheumatoid Arthritis Synovial Fluid Neutrophils Drive Inflammation Through Production of Chemokines, Reactive Oxygen Species, and Neutrophil Extracellular Traps.

Helen L Wright, Max Lyon, Elinor A Chapman, Robert J Moots, Steven W Edwards

Open access · goldAbstract read
In one paragraph

Article in Frontiers in immunology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 137 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
137citing papers in PubMed, 2 pooled it
11.4field-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

137 citing papers in PubMed, 2 syntheses or guidelines pooled it, 207 citations in OpenAlex.

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  19. Standardized Extract of Flavonoids fromJournal of inflammation research · 2026
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77 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

5 authors at 1 institution in 1 country.

Helen L WrightInstitute of Life Course and Medical Sciences, University of Liverpool, Liverpool, United Kingdom.
Max LyonInstitute of Life Course and Medical Sciences, University of Liverpool, Liverpool, United Kingdom.
Elinor A ChapmanInstitute of Life Course and Medical Sciences, University of Liverpool, Liverpool, United Kingdom.
Robert J MootsDepartment of Rheumatology, Aintree University Hospital, Liverpool, United Kingdom.
Steven W EdwardsFaculty of Health, Social Care and Medicine, Edge Hill University, Ormskirk, United Kingdom.
University of Liverpool · GB

Funding

Medical Research Council MR/K015931/1Medical Research Council MR/P020941/1Versus Arthritis 21430Wellcome TrustWellcome Trust 200605/Z/16/Z
6 · The paper itself

Abstract

Rheumatoid arthritis (RA) is a chronic inflammatory disorder affecting synovial joints. Neutrophils are believed to play an important role in both the initiation and progression of RA, and large numbers of activated neutrophils are found within both synovial fluid (SF) and synovial tissue from RA joints. In this study we analyzed paired blood and SF neutrophils from patients with severe, active RA (DAS28>5.1, n=3) using RNA-seq. 772 genes were significantly different between blood and SF neutrophils. IPA analysis predicted that SF neutrophils had increased expression of chemokines and ROS production, delayed apoptosis, and activation of signaling cascades regulating the production of NETs. This activated phenotype was confirmed experimentally by incubating healthy control neutrophils in cell-free RA SF, which was able to delay apoptosis and induce ROS production in both unprimed and TNFα primed neutrophils (p<0.05). RA SF significantly increased neutrophil migration through 3μM transwell chambers (p<0.05) and also increased production of NETs by healthy control neutrophils (p<0.001), including exposure of myeloperoxidase (MPO) and citrullinated histone-H3-positive DNA NETs. IPA analysis predicted NET production was mediated by signaling networks including AKT, RAF1, SRC, and NF-κB. Our results expand the understanding of the molecular changes that take place in the neutrophil transcriptome during migration into inflamed joints in RA, and the altered phenotype in RA SF neutrophils. Specifically, RA SF neutrophils lose their migratory properties, residing within the joint to generate signals that promote joint damage, as well as inflammation

Indexed as

ApoptosisArthritis, RheumatoidChemokinesExtracellular TrapsFemaleHumansInflammationJointsMaleMiddle AgedNeutrophil ActivationNeutrophilsPeroxidaseReactive Oxygen SpeciesSignal TransductionSynovial FluidChemokinesPeroxidaseReactive Oxygen Speciesneutrophil extracellular trapsneutrophilsrheumatoid arthritissynovial fluidtranscriptomics

Identifiers

PMID33469455
PMCPMC7813679
OpenAlexW3121011236

What OpenQuestion holds

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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.