Evidence map›Paper›PMID 22904198›Full record

ArticleAmerican journal of respiratory cell and molecular biology2012

The Nox4 inhibitor GKT137831 attenuates hypoxia-induced pulmonary vascular cell proliferation.

David E Green, Tamara C Murphy, Bum-Yong Kang, Jennifer M Kleinhenz, Cédric Szyndralewiez, Patrick Page, Roy L Sutliff, C Michael Hart

Open access · greenAbstract read
In one paragraph

Article in American journal of respiratory cell and molecular biology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 101 papers.

0numbers the graph read from it
0cells of the map it votes in
101citing papers in PubMed
9.3field-weighted citation impact, top 2% 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

101 citing papers in PubMed, 143 citations in OpenAlex.

  1. Review
  2. Signaling pathways and targeted therapy for pulmonary hypertension.Signal transduction and targeted therapy · 2025
    Review
  3. NADPCurrent medicinal chemistry · 2025
    Review
  4. Review
  5. [Effects of M2-type macrophages and GKT137831 on oxidative stress in hepatic stellate cells].Zhonghua gan zang bing za zhi = Zhonghua ganzangbing zazhi = Chinese journal of hepatology · 2024
    Article
  6. Article
  7. Article
  8. Review
  9. Article
  10. Adipose Tissue Inflammation and Pulmonary Dysfunction in Obesity.International journal of molecular sciences · 2022
    Review
  11. Article
  12. Review
  13. Article
  14. Article
  15. Review
  16. Review
  17. Functions of ROS in Macrophages and Antimicrobial Immunity.Antioxidants (Basel, Switzerland) · 2021
    Review
  18. Review
  19. Reactive Oxygen Species: Not Omnipresent but Important in Many Locations.Frontiers in cell and developmental biology · 2021
    Article
  20. Review

41 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

8 authors at 2 institutions in 2 countries.

David E GreenDepartment of Medicine, Emory University, Atlanta Veterans Affairs Medical Center, Decatur, GA 30033, USA.
Tamara C Murphy
Bum-Yong Kang
Jennifer M Kleinhenz
Cédric Szyndralewiez
Patrick Page
Roy L Sutliff
C Michael Hart
Emory University · USGenkyotex (Switzerland) · CH

Funding

Tissue Processing and Cell Culture COreP01HL081064 · NHLBI · CLEVELAND CLINIC LERNER COM-CWRU · PI ARONICA, MARK A · 2006 to 2019
$17.8M
NITRIC OXIDE PRODUCTION AND REACTIONS IN THE LUNGR01HL060917 · NHLBI · CLEVELAND CLINIC LERNER COM-CWRU · PI Serpil C. Erzurum · 1999 to 2026
$6.3M
PPAR gamma and Nox4 in pulmonary hypertensionR01HL102167 · NHLBI · EMORY UNIVERSITY · PI HART, C MICHAEL, SUTLIFF, ROY L · 2011 to 2018
$2.5M
Training Program in Academic Pulmonary MedicineT32HL076118 · NHLBI · EMORY UNIVERSITY · PI HART, C MICHAEL · 2004 to 2013
$1.7M
PPAR gamma regulates vascular endothelial reactive species production in diabetesR01DK074518 · NIDDK · EMORY UNIVERSITY · PI HART, C MICHAEL · 2008 to 2012
$1.6M
NHLBI NIH HHS P01 HL081064NHLBI NIH HHS R01 HL060917NHLBI NIH HHS R01 HL 102167NHLBI NIH HHS R01 HL102167NHLBI NIH HHS T32 HL076118NHLBI NIH HHS T32 HL076118-06NIDDK NIH HHS R01 DK 074518NIDDK NIH HHS R01 DK074518
6 · The paper itself

Abstract

Increased NADP reduced (NADPH) oxidase 4 (Nox4) and reduced expression of the nuclear hormone receptor peroxisome proliferator-activated receptor γ (PPARγ) contribute to hypoxia-induced pulmonary hypertension (PH). To examine the role of Nox4 activity in pulmonary vascular cell proliferation and PH, the current study used a novel Nox4 inhibitor, GKT137831, in hypoxia-exposed human pulmonary artery endothelial or smooth muscle cells (HPAECs or HPASMCs) in vitro and in hypoxia-treated mice in vivo. HPAECs or HPASMCs were exposed to normoxia or hypoxia (1% O(2)) for 72 hours with or without GKT137831. Cell proliferation and Nox4, PPARγ, and transforming growth factor (TGF)β1 expression were measured. C57Bl/6 mice were exposed to normoxia or hypoxia (10% O(2)) for 3 weeks with or without GKT137831 treatment during the final 10 days of exposure. Lung PPARγ and TGF-β1 expression, right ventricular hypertrophy (RVH), right ventricular systolic pressure (RVSP), and pulmonary vascular remodeling were measured. GKT137831 attenuated hypoxia-induced H(2)O(2) release, proliferation, and TGF-β1 expression and blunted reductions in PPARγ in HPAECs and HPASMCs in vitro. In vivo GKT137831 inhibited hypoxia-induced increases in TGF-β1 and reductions in PPARγ expression and attenuated RVH and pulmonary artery wall thickness but not increases in RVSP or muscularization of small arterioles. This study shows that Nox4 plays a critical role in modulating proliferative responses of pulmonary vascular wall cells. Targeting Nox4 with GKT137831 provides a novel strategy to attenuate hypoxia-induced alterations in pulmonary vascular wall cells that contribute to vascular remodeling and RVH, key features involved in PH pathogenesis.

Indexed as

AnimalsCell HypoxiaCell ProliferationCells, CulturedEndothelial CellsEndothelium, VascularGene ExpressionGene Knockdown TechniquesHumansHydrogen PeroxideHypertension, PulmonaryLungMiceMice, Inbred C57BLMyocytes, Smooth MuscleNADPH Oxidase 4Hydrogen PeroxideNADPH Oxidase 4NADPH OxidasesNOX4 protein, humanPPAR gammaProliferating Cell Nuclear AntigenPyrazolesPyrazolonesPyridinesPyridonesRosiglitazonesetanaxibThiazolidinedionesTransforming Growth Factor beta1

Identifiers

PMID22904198
PMCPMC3547100
OpenAlexW1990038383

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.