Evidence map›Paper›PMID 24642449›Full record

ArticleJournal of innate immunity2014

Induction of M2 regulatory macrophages through the β2-adrenergic receptor with protection during endotoxemia and acute lung injury.

Jamison J Grailer, Mikel D Haggadone, J Vidya Sarma, Firas S Zetoune, Peter A Ward

Abstract read
In one paragraph

Article in Journal of innate immunity, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 96 papers.

0numbers the graph read from it
0cells of the map it votes in
96citing papers in PubMed
–field-weighted citation impact
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

96 citing papers in PubMed.

  1. Article
  2. The Role of the Nervous System in Lung Disease.Current neurology and neuroscience reports · 2026
    Review
  3. Article
  4. Review
  5. Article
  6. Article
  7. Review
  8. Review
  9. Review
  10. Review
  11. Review
  12. Review
  13. Article
  14. Sympathetic regulation of the host immune response to bacterial sepsis.Clinical science (London, England : 1979) · 2025
    Review
  15. Review
  16. Article
  17. Review
  18. Article
  19. Review
  20. Review

36 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.

Jamison J GrailerDepartment of Pathology, University of Michigan Medical School, Ann Arbor, Mich., USA.
Mikel D Haggadone
J Vidya Sarma
Firas S Zetoune
Peter A Ward

Funding

Lung Immunopathology Training Stipend SupplementT32HL007517 · NHLBI · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI LUKACS, NICHOLAS W · 1985 to 2022
$6.1M
Regulation of Lung Inflammation by Catecholamines and Adrenergic ReceptorsR01GM029507 · NIGMS · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI WARD, PETER A · 1985 to 2013
$3.9M
Protective Effects of Anti-C5a in SepsisR01GM061656 · NIGMS · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI WARD, PETER A · 2002 to 2013
$3.8M
LUNG INJURY BY OXYGEN METABOLITESR37GM029507 · NIGMS · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI WARD, PETER A · 1987 to 1996
–
NHLBI NIH HHS T32 HL007517NHLBI NIH HHS T32-HL007517-29NIGMS NIH HHS GM-29507NIGMS NIH HHS GM-61656NIGMS NIH HHS R01 GM029507NIGMS NIH HHS R01 GM061656NIGMS NIH HHS R37 GM029507
6 · The paper itself

Abstract

The main drivers of acute inflammation are macrophages, which are known to have receptors for catecholamines. Based on their function, macrophages are broadly categorized as having either M1 (proinflammatory) or M2 phenotypes (anti-inflammatory). In this study, we investigated catecholamine-induced alterations in the phenotype of activated macrophages. In the presence of lipopolysaccharide (LPS), mouse peritoneal macrophages acquired an M1 phenotype. However, the copresence of LPS and either epinephrine or norepinephrine resulted in a strong M2 phenotype including high levels of arginase-1 and interleukin-10, and a reduced expression of M1 markers. Furthermore, epinephrine enhanced macrophage phagocytosis and promoted type 2 T-cell responses in vitro, which are known features of M2 macrophages. Analysis of M2 subtype-specific markers indicated that LPS and catecholamine-cotreated macrophages were not alternatively activated but were rather of the regulatory macrophage subtype. Interestingly, catecholamines signaled through the β2-adrenergic receptor but not the canonical cAMP/protein kinase A signaling pathway. Instead, the M2 pathway required an intact phosphoinositol 3-kinase pathway. Blockade of the β2-adrenergic receptor reduced survival and enhanced injury in mouse models of endotoxemia and LPS-induced acute lung injury, respectively. These results demonstrate a role for the β2-adrenergic receptor in promoting the M2 macrophage phenotype.

Indexed as

Acute Lung InjuryAnimalsCatecholaminesCell DifferentiationCells, CulturedDisease Models, AnimalEndotoxemiaEpinephrineHumansLipopolysaccharidesLymphocyte ActivationMacrophage ActivationMacrophages, PeritonealMiceMice, Inbred BALB CMice, Inbred C57BLCatecholaminesEpinephrineLipopolysaccharidesNorepinephrineReceptors, Adrenergic, beta-2

Identifiers

PMID24642449
PMCPMC4159611

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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.