Evidence map›Paper›PMID 19815354›Full record

ArticleEarly human development2009

Decreased CD47 expression during spontaneous apoptosis targets neutrophils for phagocytosis by monocyte-derived macrophages.

Donald W Lawrence, Sarah B King, William A Frazier, Joyce M Koenig

Open access · greenAbstract read
In one paragraph

Article in Early human development, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
0.7field-weighted citation impact, top 30% 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

15 citing papers in PubMed, 28 citations in OpenAlex.

  1. Review
  2. Article
  3. Dietary Fish Oil Increases the Number of CD11bJournal of inflammation research · 2022
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  5. Effect of vitamin E on stroke-associated pneumonia.The Journal of international medical research · 2020
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  6. Article
  7. Review
  8. Review
  9. Review
  10. Evidencing the Role of Erythrocytic Apoptosis in Malarial Anemia.Frontiers in cellular and infection microbiology · 2016
    Review
  11. Review
  12. Article
  13. Review
  14. Thrombospondin-1: multiple paths to inflammation.Mediators of inflammation · 2011
    Review
  15. 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

4 authors at 2 institutions in 1 country.

Donald W LawrenceDepartment of Pediatrics, Division of Neonatology, Saint Louis University School of Medicine, Saint Louis, MO 63104, USA.
Sarah B King
William A Frazier
Joyce M Koenig
Saint Louis University · USWashington University in St. Louis · US

Funding

Neutrophil Apoptosis and Neonatal InflammationR01HD047401 · NICHD · UNIVERSITY OF FLORIDA · PI KOENIG, JOYCE MARIE · 2005 to 2009
$1.5M
NICHD NIH HHS HD47401NICHD NIH HHS R01 HD047401
6 · The paper itself

Abstract

backgroundNeutrophils (PMN) are the primary leukocyte responders during acute inflammation. After migrating into the tissues, PMN undergo programmed cell death (apoptosis) and are subsequently removed via phagocytosis by resident macrophages during the resolution phase. Efficient phagocytosis of apoptotic neutrophils is necessary for successful resolution. CD47 plays a critical role in mediating the phagocytic response, although its role in the phagocytosis of apoptotic PMN is incompletely understood.

aimsIn the present study we tested the hypotheses that CD47 modulates the targeting of apoptotic PMN for phagocytosis, and that this process is altered in neonatal PMN. STUDY

designAdult and neonatal PMN were examined for their expression of CD47. To investigate CD47-mediated functions, apoptotic adult and neonatal PMN were co-cultured with monocyte-derived macrophages (MDM) and the phagocytic index was determined using a flow cytometry-based assay.

resultsWe observed lower basal surface CD47 levels on neonatal vs. adult PMN. In both groups, spontaneous apoptosis led to decreased surface and total cellular CD47 expression. Adult and neonatal MDM ingested apoptotic neonatal target PMN more avidly than apoptotic adult target PMN. Masking of surface CD47 on PMN with a monoclonal antibody enhanced MDM phagocytic activity.

conclusionsOur results suggest that age-dependent expression of CD47 on PMN may account for differences in their ingestion by macrophages and in the resolution of inflammation.

Indexed as

ApoptosisAdultAge FactorsCD47 AntigenCoculture TechniquesFemaleFlow CytometryHumansInfant, NewbornMacrophagesNeutrophilsPhagocytosisPlacentaPregnancyCD47 AntigenCD47 protein, human

Identifiers

PMID19815354
PMCPMC2800099
OpenAlexW2094563045

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Registered trials

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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.