Evidence map›Paper›PMID 35637483›Full record

ArticleCritical care (London, England)2022

Impairment of neutrophil functions and homeostasis in COVID-19 patients: association with disease severity.

Chloé Loyer, Arnaud Lapostolle, Tomas Urbina, Alexandre Elabbadi, Jean-Rémi Lavillegrand, Thomas Chaigneau, Coraly Simoes, Julien Dessajan, Cyrielle Desnos, Mélanie Morin-Brureau and 6 more

Open access · goldAbstract read
In one paragraph

Article in Critical care (London, England), 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed, 1 pooled it
4.6field-weighted citation impact, top 4% 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

28 citing papers in PubMed, 1 synthesis or guideline pooled it, 43 citations in OpenAlex.

  1. Pooled it
  2. Immune cell disorder in viral pneumonia.Journal of translational medicine · 2026
    Review
  3. Article
  4. Article
  5. Article
  6. Target neutrophil heterogeneity and plasticity in cancer.Journal of hematology & oncology · 2025
    Review
  7. Article
  8. Article
  9. Article
  10. Neutrophil diversity and function in health and disease.Signal transduction and targeted therapy · 2024
    Review
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Review
  18. Review
  19. Article
  20. 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

16 authors at 2 institutions in 1 country.

Chloé LoyerINSERM, UMRS 938, Hôpital St-Antoine, Centre de Recherche Saint-Antoine, Sorbonne Université, 75012, Paris, France.
Arnaud LapostolleINSERM, UMRS 938, Hôpital St-Antoine, Centre de Recherche Saint-Antoine, Sorbonne Université, 75012, Paris, France.
Tomas UrbinaSorbonne Université, Paris, France.
Alexandre ElabbadiService de Médecine Intensive-Réanimation, Hôpital Tenon, Assistance Publique-Hôpitaux de Paris, Paris, France.
Jean-Rémi LavillegrandSorbonne Université, Paris, France.
Thomas ChaigneauINSERM, UMRS 938, Hôpital St-Antoine, Centre de Recherche Saint-Antoine, Sorbonne Université, 75012, Paris, France.
Coraly SimoesINSERM, UMRS 938, Hôpital St-Antoine, Centre de Recherche Saint-Antoine, Sorbonne Université, 75012, Paris, France.
Julien DessajanSorbonne Université, Paris, France.
Cyrielle DesnosSorbonne Université, Paris, France.
Mélanie Morin-BrureauINSERM, UMRS 938, Hôpital St-Antoine, Centre de Recherche Saint-Antoine, Sorbonne Université, 75012, Paris, France.
Yannick ChantranINSERM, UMRS 938, Hôpital St-Antoine, Centre de Recherche Saint-Antoine, Sorbonne Université, 75012, Paris, France.
Pierre AucouturierINSERM, UMRS 938, Hôpital St-Antoine, Centre de Recherche Saint-Antoine, Sorbonne Université, 75012, Paris, France.
Bertrand GuidetSorbonne Université, Paris, France.
Guillaume VoiriotSorbonne Université, Paris, France.
Hafid Ait-OufellaSorbonne Université, Paris, France.
Carole ElbimINSERM, UMRS 938, Hôpital St-Antoine, Centre de Recherche Saint-Antoine, Sorbonne Université, 75012, Paris, France. carole.elbim@upmc.fr.
Inserm · FRSorbonne Université · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundA dysregulated immune response is emerging as a key feature of critical illness in COVID-19. Neutrophils are key components of early innate immunity that, if not tightly regulated, contribute to uncontrolled systemic inflammation. We sought to decipher the role of neutrophil phenotypes, functions, and homeostasis in COVID-19 disease severity and outcome.

methodsBy using flow cytometry, this longitudinal study compares peripheral whole-blood neutrophils from 90 COVID-19 ICU patients with those of 22 SARS-CoV-2-negative patients hospitalized for severe community-acquired pneumonia (CAP) and 38 healthy controls. We also assessed correlations between these phenotypic and functional indicators and markers of endothelial damage as well as disease severity.

resultsAt ICU admission, the circulating neutrophils of the COVID-19 patients showed continuous basal hyperactivation not seen in CAP patients, associated with higher circulating levels of soluble E- and P-selectin, which reflect platelet and endothelial activation. Furthermore, COVID-19 patients had expanded aged-angiogenic and reverse transmigrated neutrophil subsets-both involved in endothelial dysfunction and vascular inflammation. Simultaneously, COVID-19 patients had significantly lower levels of neutrophil oxidative burst in response to bacterial formyl peptide. Moreover patients dying of COVID-19 had significantly higher expansion of aged-angiogenic neutrophil subset and greater impairment of oxidative burst response than survivors.

conclusionsThese data suggest that neutrophil exhaustion may be involved in the pathogenesis of severe COVID-19 and identify angiogenic neutrophils as a potentially harmful subset involved in fatal outcome.

Indexed as

Community-Acquired InfectionsCOVID-19PneumoniaAgedHomeostasisHumansInflammationLongitudinal StudiesNeutrophilsSARS-CoV-2Severity of Illness IndexAngiogenic neutrophilsCOVID-19NeutrophilOxidative burstVascular inflammation

Identifiers

PMID35637483
PMCPMC9149678
OpenAlexW4281622403

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.