Evidence map›Paper›PMID 22148072›Full record

ArticleDiabetes2012

Hyperglycemia enhances IGF-I-stimulated Src activation via increasing Nox4-derived reactive oxygen species in a PKCζ-dependent manner in vascular smooth muscle cells.

Gang Xi, Xinchun Shen, Laura A Maile, Christine Wai, Katherine Gollahon, David R Clemmons

Open access · hybridAbstract read
In one paragraph

Article in Diabetes, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed
2.6field-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

27 citing papers in PubMed, 61 citations in OpenAlex.

  1. Review
  2. Article
  3. Review
  4. Oxidative Regulation of Vascular CaAntioxidants (Basel, Switzerland) · 2022
    Review
  5. Redox Homeostasis in Thyroid Cancer: Implications in NaInternational journal of molecular sciences · 2022
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  7. Review
  8. Review
  9. Article
  10. Review
  11. Article
  12. Article
  13. Review
  14. Article
  15. ROS signaling and redox biology in endothelial cells.Cellular and molecular life sciences : CMLS · 2015
    Review
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article
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

6 authors at 1 institution in 1 country.

Gang XiDepartment of Medicine, University of North Carolina School of Medicine, Chapel Hill, North Carolina, USA.
Xinchun Shen
Laura A Maile
Christine Wai
Katherine Gollahon
David R Clemmons
University of North Carolina at Chapel Hill · US

Funding

Role of Integrins/ECM in Controlling IGF-I ActionsR37AG002331 · NIA · UNIV OF NORTH CAROLINA CHAPEL HILL · PI CLEMMONS, DAVID ROBERT · 2004 to 2013
$3.7M
THE EFFECT OF AGING ON HORMONAL CONTROL OF REPLICATIONR01AG002331 · NIA · UNIVERSITY OF NORTH CAROLINA CHAPEL HILL · PI CLEMMONS, DAVID ROBERT · 1985 to 2002
$1.0M
NIA NIH HHS AG-02331NIA NIH HHS R01 AG002331NIA NIH HHS R37 AG002331
6 · The paper itself

Abstract

IGF-I-stimulated sarcoma viral oncogene (Src) activation during hyperglycemia is required for propagating downstream signaling. The aim of the current study was to determine the mechanism by which hyperglycemia enhances IGF-I-stimulated Src activation and the role of NADPH oxidase 4 (Nox4) and protein kinase C ζ (PKCζ) in mediating this response in vascular smooth muscle cells (VSMCs). Nox4 expression was analyzed in VSMCs exposed to hyperglycemia. The role of Nox4-derived reactive oxygen species (ROS) in IGF-I-stimulated Src activation was investigated via knockdown of Nox4. Different isoforms of PKC were screened to investigate their role in hyperglycemia-induced Nox4. The oxidation of Src was shown to be a prerequisite for its activation in response to IGF-I during hyperglycemia. Hyperglycemia induced Nox4, but not Nox1, and p22 phagocyte oxidase (p22phox) expression and IGF-I stimulated Nox4/p22phox complex formation, leading to increased ROS generation. Knockdown of Nox4 prevented ROS generation and impaired the oxidation and activation of Src in response to IGF-I, whereas knockdown of Nox1 had no effect. PKCζ was shown to mediate the hyperglycemia-induced increase in Nox4 expression. The key observations in cultured VSMCs were confirmed in the diabetic mice. Nox4-derived ROS is responsible for the enhancing effect of hyperglycemia on IGF-I-stimulated Src activation, which in turn amplifies IGF-I-linked downstream signaling and biological actions.

Indexed as

AnimalsAntioxidantsCells, CulturedEnzyme ActivationHyperglycemiaInsulin-Like Growth Factor IMaleMiceMice, Inbred C57BLMuscle, Smooth, VascularMyocytes, Smooth MuscleNADPH Oxidase 4NADPH OxidasesOxidation-ReductionProtein Kinase CProtein Kinase C zetaAntioxidantsInsulin-Like Growth Factor INADPH Oxidase 4NADPH OxidasesNox4 protein, mouseProtein Kinase CProtein Kinase C zetaProto-Oncogene Proteins pp60(c-src)Reactive Oxygen Species

Identifiers

PMID22148072
PMCPMC3237650
OpenAlexW2101713491

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.