Evidence map›Paper›PMID 22772444›Full record

ArticleJournal of immunology (Baltimore, Md. : 1950)2012

Identification of hemopexin as an anti-inflammatory factor that inhibits synergy of hemoglobin with HMGB1 in sterile and infectious inflammation.

Tian Lin, Fatima Sammy, Huan Yang, Sujatha Thundivalappil, Judith Hellman, Kevin J Tracey, H Shaw Warren

Open access · bronzeAbstract read
In one paragraph

Article in Journal of immunology (Baltimore, Md. : 1950), 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 63 papers.

0numbers the graph read from it
0cells of the map it votes in
63citing papers in PubMed
3.0field-weighted citation impact, top 8% 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

63 citing papers in PubMed, 90 citations in OpenAlex.

  1. Secreted phospholipase PLA2G5 acts as a hemolytic factor in sepsis.The Journal of clinical investigation · 2026
    Article
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  3. Article
  4. Article
  5. Article
  6. Review
  7. Article
  8. Cell-free hemoglobin triggers macrophage cytokine production via TLR4 and MyD88.American journal of physiology. Lung cellular and molecular physiology · 2024
    Article
  9. Review
  10. Interaction of TiOEnvironmental science. Nano · 2023
    Article
  11. Circulating Iron in Patients with Sickle Cell Disease Mediates the Release of Neutrophil Extracellular Traps.Transfusion medicine and hemotherapy : offizielles Organ der Deutschen Gesellschaft fur Transfusionsmedizin und Immunhamatologie · 2023
    Article
  12. Review
  13. Review
  14. Article
  15. Article
  16. New Insights into Hemopexin-Binding to Hemin and Hemoglobin.International journal of molecular sciences · 2022
    Article
  17. Review
  18. Review
  19. Article
  20. Article

3 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

7 authors at 3 institutions in 1 country.

Tian LinInfectious Disease Unit, Massachusetts General Hospital, Boston, MA 02129, USA. tlin7@partners.org
Fatima Sammy
Huan Yang
Sujatha Thundivalappil
Judith Hellman
Kevin J Tracey
H Shaw Warren
Massachusetts General Hospital · USFeinstein Institute for Medical Research · USUniversity of California, San Francisco · US

Funding

HMG IN POST OPERATIVE AND TRAUMATIC STRESSR01GM062508 · NIGMS · NORTH SHORE UNIVERSITY HOSPITAL · PI TRACEY, KEVIN J · 2001 to 2014
$3.7M
BACTERIAL MEMBRANE PROTEINS IN GRAM-NEGATIVE SEPSISR01GM059694 · NIGMS · MASSACHUSETTS GENERAL HOSPITAL · PI WARREN, H SHAW · 2000 to 2008
$2.6M
TLR2 in Sepsis-Induced Coagulopathy, Endothelial Leak, and Pulmonary DysfunctionR01AI058106 · NIAID · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI HELLMAN, JUDITH · 2004 to 2010
$2.3M
Mouse model for sepsisR01AI059010 · NIAID · MASSACHUSETTS GENERAL HOSPITAL · PI WARREN, H SHAW · 2005 to 2009
$1.9M
Mechanism of action and therapeutic potential of HMGB1 A box in sepsisR01GM098446 · NIGMS · FEINSTEIN INSTITUTE FOR MEDICAL RESEARCH · PI YANG, HUAN · 2011 to 2014
$1.2M
NIAID NIH HHS AI059010NIAID NIH HHS R01 AI058106NIAID NIH HHS R01 AI059010NIGMS NIH HHS GM098446NIGMS NIH HHS GM59694NIGMS NIH HHS GM62508NIGMS NIH HHS R01 GM059694NIGMS NIH HHS R01 GM062508NIGMS NIH HHS R01 GM098446
6 · The paper itself

Abstract

Hemoglobin is released from lysed RBCs in numerous clinical settings. High mobility group box 1 (HMGB1) is a nuclear and cytosolic DNA-binding protein released from injured cells that has been shown to play an important role in inducing inflammation. Because both of these endogenous molecules are frequently present in sites of necrosis and inflammation, we studied their interaction on the activation of macrophages. We report in this article that hemoglobin and HMGB1 synergize to activate mouse macrophages to release significantly increased proinflammatory cytokines. Addition of microbial ligands that activate through TLR2 or TLR4 resulted in further significant increases, in a "three-way" synergy between endogenous and microbial ligands. The synergy was strongly suppressed by hemopexin (Hx), an endogenous heme-binding plasma protein. The findings suggest that hemoglobin may play an important role in sterile and infectious inflammation, and that endogenous Hx can modulate this response. Administration of Hx may be beneficial in clinical settings characterized by elevated extracellular hemoglobin and HMGB1.

Indexed as

AnimalsCytokinesHemoglobinsHemopexinHMGB1 ProteinHumansInfectionsInflammationMacrophage ActivationMacrophagesMiceMice, Inbred C57BLCytokinesHemoglobinsHemopexinHMGB1 Protein

Identifiers

PMID22772444
PMCPMC3426910
OpenAlexW2125361730

What OpenQuestion holds

Textmetadata
LicenceTDM
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.