Evidence map›Paper›PMID 19509285›Full record

ArticleThe Journal of biological chemistry2009

Cell surface biliverdin reductase mediates biliverdin-induced anti-inflammatory effects via phosphatidylinositol 3-kinase and Akt.

Barbara Wegiel, Catherine J Baty, David Gallo, Eva Csizmadia, Jeffrey R Scott, Ardavan Akhavan, Beek Y Chin, Elzbieta Kaczmarek, Jawed Alam, Fritz H Bach and 2 more

Open access · hybridAbstract read
In one paragraph

Article in The Journal of biological chemistry, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 74 papers.

0numbers the graph read from it
0cells of the map it votes in
74citing papers in PubMed
2.6field-weighted citation impact, top 11% 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

74 citing papers in PubMed, 112 citations in OpenAlex.

  1. Review
  2. Biliverdin reductase A is a major determinant of protective NRF2 signaling.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  3. Article
  4. Sensors (Basel, Switzerland) · 2025
    Article
  5. Review
  6. Review
  7. Bilirubin metabolism in relation to cancer.Frontiers in oncology · 2025
    Review
  8. Article
  9. Article
  10. Review
  11. Article
  12. Modulation of Nrf2/HO-1 by Natural Compounds in Lung Cancer.Antioxidants (Basel, Switzerland) · 2023
    Review
  13. Article
  14. Article
  15. Review
  16. Article
  17. Review
  18. The Bioactivities of Phycocyanobilin from Spirulina.Journal of immunology research · 2022
    Review
  19. Review
  20. Article

14 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

12 authors at 3 institutions in 1 country.

Barbara WegielTransplant Institute, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts 02215, USA.
Catherine J Baty
David Gallo
Eva Csizmadia
Jeffrey R Scott
Ardavan Akhavan
Beek Y Chin
Elzbieta Kaczmarek
Jawed Alam
Fritz H Bach
Brian S Zuckerbraun
Leo E Otterbein
Beth Israel Deaconess Medical Center · USUniversity of Pittsburgh · USLouisiana State University · US

Funding

Carbon Monoxide to Prevent Circulatory CollapseR01HL076167 · NHLBI · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI OTTERBEIN, LEO E · 2004 to 2007
$1.6M
Anti-Inflammatory Effects of Carbon Monoxide in the LungR01HL071797 · NHLBI · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI OTTERBEIN, LEO E · 2003 to 2006
$1.3M
NHLBI NIH HHS HL-071797NHLBI NIH HHS HL-076167NHLBI NIH HHS R01 HL071797NHLBI NIH HHS R01 HL076167
6 · The paper itself

Abstract

Biliverdin reductase A (BVR) catalyzes the reduction of biliverdin (BV) to bilirubin (BR) in all cells. Others and we have shown that biliverdin is a potent anti-inflammatory molecule, however, the mechanism by which BV exerts its protective effects is unclear. We describe and elucidate a novel finding demonstrating that BVR is expressed on the external plasma membrane of macrophages (and other cells) where it quickly converts BV to BR. The enzymatic conversion of BV to BR on the surface by BVR initiates a signaling cascade through tyrosine phosphorylation of BVR on the cytoplasmic tail. Phosphorylated BVR in turn binds to the p85alpha subunit of phosphatidylinositol 3-kinase and activates downstream signaling to Akt. Using bacterial endotoxin (lipopolysaccharide) to initiate an inflammatory response in macrophages, we find a rapid increase in BVR surface expression. One of the mechanisms by which BV mediates its protective effects in response to lipopolysaccharide is through enhanced production of interleukin-10 (IL-10) the prototypical anti-inflammatory cytokine. IL-10 regulation is dependent in part on the activation of Akt. The effects of BV on IL-10 expression are lost with blockade of Akt. Inhibition of surface BVR with RNA interference attenuates BV-induced Akt signaling and IL-10 expression and in vivo negates the cytoprotective effects of BV in models of shock and acute hepatitis. Collectively, our findings elucidate a potentially important new molecular mechanism by which BV, through the enzymatic activity and phosphorylation of surface BVR (BVR)(surf) modulates the inflammatory response.

Indexed as

AnimalsAnti-Inflammatory AgentsBiliverdineCell MembraneHumansInflammationInterleukin-10MacrophagesMiceMice, Inbred C57BLModels, BiologicalOxidoreductases Acting on CH-CH Group DonorsPhosphatidylinositol 3-KinasesProto-Oncogene Proteins c-aktSubcellular FractionsAnti-Inflammatory AgentsBiliverdinebiliverdin reductaseInterleukin-10Oxidoreductases Acting on CH-CH Group DonorsPhosphatidylinositol 3-KinasesProto-Oncogene Proteins c-akt

Identifiers

PMID19509285
PMCPMC2755861
OpenAlexW2051431505

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.