Evidence map›Paper›PMID 23922742›Full record

ArticlePloS one2013

The human neutrophil subsets defined by the presence or absence of OLFM4 both transmigrate into tissue in vivo and give rise to distinct NETs in vitro.

Amanda Welin, Firoozeh Amirbeagi, Karin Christenson, Lena Björkman, Halla Björnsdottir, Huamei Forsman, Claes Dahlgren, Anna Karlsson, Johan Bylund

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 60 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
60citing papers in PubMed, 1 pooled it
3.7field-weighted citation impact, top 7% 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

60 citing papers in PubMed, 1 synthesis or guideline pooled it, 105 citations in OpenAlex.

  1. Pooled it
  2. A neutrophil subset defined by intracellular olfactomedin 4 is associated with mortality in sepsis.American journal of physiology. Lung cellular and molecular physiology · 2021
    Trial
  3. Review
  4. Article
  5. Olfactomedin-4Infection and immunity · 2026
    Article
  6. The Ly6gCancer communications (London, England) · 2026
    Article
  7. Olfactomedin 4 in cancer development and progression.Biochimica et biophysica acta. Reviews on cancer · 2025
    Review
  8. Article
  9. Olfactomedin-4 elevation in pediatric acute respiratory distress syndrome.American journal of physiology. Lung cellular and molecular physiology · 2025
    Article
  10. Review
  11. Article
  12. Neutrophils-biology and diversity.Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association · 2024
    Review
  13. Article
  14. Review
  15. Review
  16. Neutrophil sub-types in maintaining immune homeostasis during steady state, infections and sterile inflammation.Inflammation research : official journal of the European Histamine Research Society ... [et al.] · 2023
    Review
  17. Review
  18. CD115Communications biology · 2023
    Article
  19. Review
  20. Review
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

9 authors at 1 institution in 1 country.

Amanda WelinThe Phagocyte Research Group, Department of Rheumatology and Inflammation Research, University of Gothenburg, Gothenburg, Sweden. amanda.welin@rheuma.gu.se
Firoozeh Amirbeagi
Karin Christenson
Lena Björkman
Halla Björnsdottir
Huamei Forsman
Claes Dahlgren
Anna Karlsson
Johan Bylund
University of Gothenburg · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Neutrophil heterogeneity was described decades ago, but it could not be elucidated at the time whether the existence of different neutrophil subsets had any biological relevance. It has been corroborated in recent years that neutrophil subsets, defined by differential expression of various markers, are indeed present in human blood, calling for renewed attention to this question. The expression of the granule protein olfactomedin 4 (OLFM4) has been suggested to define two such neutrophil subsets. We confirm the simultaneous presence of one OLFM4-positive and one OLFM4-negative neutrophil subpopulation as well as the localization of the protein to specific granules. In vitro, these neutrophil subsets displayed equal tendency to undergo apoptosis and phagocytose bacteria. In addition, the subpopulations were recruited equally to inflammatory sites in vivo, and this was true both in an experimental model of acute inflammation and in naturally occurring pathological joint inflammation. In line with its subcellular localization, only limited OLFM4 release was seen upon in vivo transmigration, and release through conventional degranulation required strong secretagogues. However, extracellular release of OLFM4 could be achieved upon formation of neutrophil extracellular traps (NETs) where it was detected only in a subset of the NETs. Although we were unable to demonstrate any functional differences between the OLFM4-defined subsets, our data show that different neutrophil subsets are present in inflamed tissue in vivo. Furthermore, we demonstrate NETs characterized by different markers for the first time, and our results open up for functions of OLFM4 itself in the extracellular space through exposure in NETs.

Indexed as

ApoptosisCells, CulturedGranulocyte Colony-Stimulating FactorHumansNeutrophilsPhagocytosisGranulocyte Colony-Stimulating FactorOLFM4 protein, human

Identifiers

PMID23922742
PMCPMC3726694
OpenAlexW2007767114

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.