Cited by 94Angiogenesis and VEGF in CancerCardiac Ischemia and ReperfusionNitric Oxide and Endothelin Effects

Regulation of Vascular Endothelial Growth Factor Expression and Vascularization in the Myocardium by Insulin Receptor and PI3K/Akt Pathways in Insulin Resistance and Ischemia

He, Zhiheng, Opland, Darren M., Way, Kerrie J., Ueki, Kohjiro, Bodyak, Natalya, Kang, Peter M., Izumo, Seigo, Kulkarni, Rohit N. +4 more·2006·Arteriosclerosis, Thrombosis, and Vascular Biology

Abstract

Objective— This study characterized the role of insulin receptors and resistance on vascular endothelial growth factor (VEGF) expression and myocardial vascularization in physiological conditions and after ischemia. Methods and Results— Cardiac microvascular density was reduced by 30% in insulin-resistant Zucker fatty rats versus lean controls. This was associated with a parallel 40% inhibition of insulin-stimulated activation of both Akt and VEGF expression in the myocardium and cardiomyocytes. In contrast, the activation of Erk1/2 by insulin remained unchanged. In cultured cardiomyocytes, insulin or insulin-like growth factor (IGF)-1 increased VEGF mRNA and protein expression by 2-fold. Inhibition of PI3K/Akt, especially Akt2-mediated cascades but not the Ras/MEK/Erk pathway, using chemical inhibitors, dominant negative adenoviral constructs, or siRNA approaches suppressed VEGF mRNA expression by insulin. Ventricular tissues from muscle insulin receptor knockout (MIRKO) mice, which lack insulin receptors in the myocardium, have significant reductions in insulin but not IGF-1 signaling, VEGF expression, and vascular density before and after ischemia versus controls. Conclusions— Insulin regulates VEGF gene expression and vascularization in the myocardium specifically via insulin receptors and the activation of PI3K/Akt pathway. Selective inhibition of this pathway may lead to the decreases in VEGF expression and capillary density in the myocardium of patients with insulin resistance.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1161/01.atv.0000209500.15801.4e

Cites

33 of 33 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Impaired angiogenic signaling was confirmed in hearts of Zucker rats and in muscle-restricted insulin receptor KO mice lacking myocardial insulin receptor expression.

    “Impaired angiogenic signaling was also independently confirmed in the hearts of Zucker rats and in muscle-restricted insulin receptor KO mice that also lack insulin receptor expression in the myocardium (133, 349).”

    From Cardiac remodeling in obesity (2008) · cites this paper as [133]

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
He, Z., Opland, D. M., Way, K. J., Ueki, K., Bodyak, N., Kang, P. M., Izumo, S., Kulkarni, R. N., Wang, B., Liao, R., Kahn, C. R., & King, G. L.
Affiliations
Boston University (US)
Venue
Arteriosclerosis, Thrombosis, and Vascular Biology
Published
2006-04
Volume
26
Issue
4
Pages
787-793
ISSN
  • 1079-5642 (ISSN-L)
  • 1524-4636
OpenAlex
W2141397996
Cited by
94
References
33
Citations by year
2026: 2 · 2025: 1 · 2024: 3 · 2023: 5 · 2022: 1 · 2021: 6 · 2020: 5 · 2019: 5 · 2018: 3 · 2017: 3 · 2016: 5 · 2015: 4 · 2014: 2 · 2013: 5 · 2012: 3
FWCI
3.27
Type
journal article
Language
en
Open access
closed
Locations
  • Arteriosclerosis Thrombosis and Vascular Biology (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (5r01dk059725-05)
  • National Institute of Diabetes and Digestive and Kidney Diseases (R01 DK 53105, R01DK053105, DK02885-03, K08DK002885, R01 DK59725)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Angiogenesis and VEGF in Cancer
  • Health Sciences › Medicine › Pathology and Forensic Medicine › Cardiac Ischemia and Reperfusion
  • Health Sciences › Medicine › Physiology › Nitric Oxide and Endothelin Effects
Keywords
vascular endothelial growth factor, insulin resistance, myocardial vascularization, insulin receptor, PI3K/Akt signaling, AKT2, cardiomyocytes, myocardial ischemia, insulin-like growth factor I, ERK signaling, Zucker fatty rats
MeSH terms
Wortmannin, Phosphoinositide-3 Kinase Inhibitors, Androstadienes, Animals, Cells, Cultured, Coronary Vessels, Flavonoids, Humans, Insulin, Insulin Resistance, Male, Neovascularization, Pathologic, Rats, Zucker, Receptor, Insulin, Signal Transduction, Myocardial Ischemia, Phosphatidylinositol 3-Kinases, Myocytes, Cardiac, Vascular Endothelial Growth Factor A, Protein Kinase Inhibitors, Proto-Oncogene Proteins c-akt, Mice, Rats

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review