Evidence map›Paper›PMID 21641397›Full record

ArticleThe American journal of pathology2011

Extracellular superoxide dismutase in macrophages augments bacterial killing by promoting phagocytosis.

Michelle L Manni, Lauren P Tomai, Callie A Norris, L Michael Thomas, Eric E Kelley, Russell D Salter, James D Crapo, Ling-Yi L Chang, Simon C Watkins, Jon D Piganelli and 1 more

Open access · bronzeAbstract read
In one paragraph

Article in The American journal of pathology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed, 1 pooled it
2.7field-weighted citation impact, top 10% 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

23 citing papers in PubMed, 1 synthesis or guideline pooled it, 44 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Review
  4. Article
  5. Article
  6. Article
  7. Frontiers in cell and developmental biology · 2023
    Article
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  10. Review
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  20. It's a cell-eat-cell world: autophagy and phagocytosis.The American journal of pathology · 2013
    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

11 authors at 3 institutions in 1 country.

Michelle L ManniDepartment of Pathology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.
Lauren P Tomai
Callie A Norris
L Michael Thomas
Eric E Kelley
Russell D Salter
James D Crapo
Ling-Yi L Chang
Simon C Watkins
Jon D Piganelli
Tim D Oury
University of Pittsburgh · USNational Jewish Health · USUniversity of Colorado Denver · US

Funding

EXTRACELLULAR SUPEROXIDE DISMUTASE IN PULMONARY FIBROSISR01HL063700 · NHLBI · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI OURY, TIM D · 2000 to 2009
$2.7M
NHLBI NIH HHS R01 HL063700NHLBI NIH HHS R01 HL63700
6 · The paper itself

Abstract

Extracellular superoxide dismutase (EC-SOD) is abundant in the lung and limits inflammation and injury in response to many pulmonary insults. To test the hypothesis that EC-SOD has an important role in bacterial infections, wild-type and EC-SOD knockout (KO) mice were infected with Escherichia coli to induce pneumonia. Although mice in the EC-SOD KO group demonstrated greater pulmonary inflammation than did wild-type mice, there was less clearance of bacteria from their lungs after infection. Macrophages and neutrophils express EC-SOD; however, its function and subcellular localization in these inflammatory cells is unclear. In the present study, immunogold electron microscopy revealed EC-SOD in membrane-bound vesicles of phagocytes. These findings suggest that inflammatory cell EC-SOD may have a role in antibacterial defense. To test this hypothesis, phagocytes from wild-type and EC-SOD KO mice were evaluated. Although macrophages lacking EC-SOD produced more reactive oxygen species than did cells expressing EC-SOD after stimulation, they demonstrated significantly impaired phagocytosis and killing of bacteria. Overall, this suggests that EC-SOD facilitates clearance of bacteria and limits inflammation in response to infection by promoting bacterial phagocytosis.

Indexed as

Microbial ViabilityPhagocytosisAnimalsEscherichia coliExtracellular SpaceHumansInflammationIntracellular SpaceLungMacrophagesMiceMice, Inbred C57BLMice, KnockoutOxidantsPneumoniaSuperoxide DismutaseOxidantsSuperoxide Dismutase

Identifiers

PMID21641397
PMCPMC3124355
OpenAlexW1977786762

What OpenQuestion holds

Textmetadata
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.