Impaired angiogenesis after hindlimb ischemia in type 2 diabetes mellitus

Differential regulation of vascular endothelial growth factor receptor 1 and soluble vascular endothelial growth factor receptor 1

Surovi Hazarika, Ayotunde Dokun, Yongjun Li, Aleksander S. Popel, Christopher D. Kontos, Brian H. Annex

Research output: Contribution to journalArticle

127 Citations (Scopus)

Abstract

Deficient angiogenesis after ischemia may contribute to worse outcomes of peripheral arterial disease in patients with diabetes mellitus (DM). Vascular endothelial growth factor (VEGF) and its receptors promote angiogenesis. We hypothesized that in peripheral arterial disease, maladaptive changes in VEGF ligand/receptor expression could account for impaired angiogenesis in DM. Skeletal muscle from diet-induced, type 2 diabetic (DM) and age-matched normal chow (NC)-fed mice was collected at baseline and 3 and 10 days after hindlimb ischemia and analyzed for expression of VEGF (n=10 per group), full-length VEGF receptor (VEGFR)-1, soluble VEGFR-1, and markers of downstream VEGF signaling (n=20 per group) using ELISA, reverse transcriptase-polymerase chain reaction, and Western blots. In the absence of ischemia, DM mice had increased VEGF (NC versus DM: 26.6±2.6 versus 53.5±8.8 pg/mg protein; P<0.05), decreased soluble and membrane-bound VEGFR-1 (NC versus DM: 1.44±0.30 versus 0.85±0.08 and 1.03±0.10 versus 0.72±0.10, respectively; P<0.05), decreased phospho-AKT/AKT and phospho-endothelial NO synthase/endothelial NO synthase (NC versus DM: 0.76±0.2 versus 0.38±0.1 and 0.36±0.06 versus 0.25±0.04, respectively; P<0.05), and no change in VEGFR-2. After ischemia, both DM and NC had comparable increases in VEGF-A. VEGFR-1 and soluble VEGFR-1 expression increased in both groups, but the fold increase was significantly greater in DM. These data demonstrate that soluble VEGFR-1, an angiogenesis inhibitor, is regulated in skeletal muscle by type 2 DM and ischemia. In the absence of ischemia, despite reductions in both soluble VEGFR-1 and VEGFR-1, VEGF ligand signaling is lower in DM compared with controls. After ischemia, maladaptive upregulation of these receptors further reduces the capacity of VEGF to induce an angiogenic response, which may provide a novel target for therapy.

Original languageEnglish (US)
Pages (from-to)948-956
Number of pages9
JournalCirculation research
Volume101
Issue number9
DOIs
StatePublished - Oct 1 2007
Externally publishedYes

Fingerprint

Vascular Endothelial Growth Factor Receptor-1
Vascular Endothelial Growth Factor Receptor
Hindlimb
Type 2 Diabetes Mellitus
Ischemia
Diabetes Mellitus
Vascular Endothelial Growth Factor A
Peripheral Arterial Disease
Nitric Oxide Synthase
Skeletal Muscle
Ligands
Angiogenesis Inhibitors
Reverse Transcriptase Polymerase Chain Reaction
Up-Regulation
Western Blotting
Enzyme-Linked Immunosorbent Assay
Diet

All Science Journal Classification (ASJC) codes

  • Physiology
  • Cardiology and Cardiovascular Medicine

Cite this

Impaired angiogenesis after hindlimb ischemia in type 2 diabetes mellitus : Differential regulation of vascular endothelial growth factor receptor 1 and soluble vascular endothelial growth factor receptor 1. / Hazarika, Surovi; Dokun, Ayotunde; Li, Yongjun; Popel, Aleksander S.; Kontos, Christopher D.; Annex, Brian H.

In: Circulation research, Vol. 101, No. 9, 01.10.2007, p. 948-956.

Research output: Contribution to journalArticle

@article{31d196fea3d04f49a334359a1975ad7c,
title = "Impaired angiogenesis after hindlimb ischemia in type 2 diabetes mellitus: Differential regulation of vascular endothelial growth factor receptor 1 and soluble vascular endothelial growth factor receptor 1",
abstract = "Deficient angiogenesis after ischemia may contribute to worse outcomes of peripheral arterial disease in patients with diabetes mellitus (DM). Vascular endothelial growth factor (VEGF) and its receptors promote angiogenesis. We hypothesized that in peripheral arterial disease, maladaptive changes in VEGF ligand/receptor expression could account for impaired angiogenesis in DM. Skeletal muscle from diet-induced, type 2 diabetic (DM) and age-matched normal chow (NC)-fed mice was collected at baseline and 3 and 10 days after hindlimb ischemia and analyzed for expression of VEGF (n=10 per group), full-length VEGF receptor (VEGFR)-1, soluble VEGFR-1, and markers of downstream VEGF signaling (n=20 per group) using ELISA, reverse transcriptase-polymerase chain reaction, and Western blots. In the absence of ischemia, DM mice had increased VEGF (NC versus DM: 26.6±2.6 versus 53.5±8.8 pg/mg protein; P<0.05), decreased soluble and membrane-bound VEGFR-1 (NC versus DM: 1.44±0.30 versus 0.85±0.08 and 1.03±0.10 versus 0.72±0.10, respectively; P<0.05), decreased phospho-AKT/AKT and phospho-endothelial NO synthase/endothelial NO synthase (NC versus DM: 0.76±0.2 versus 0.38±0.1 and 0.36±0.06 versus 0.25±0.04, respectively; P<0.05), and no change in VEGFR-2. After ischemia, both DM and NC had comparable increases in VEGF-A. VEGFR-1 and soluble VEGFR-1 expression increased in both groups, but the fold increase was significantly greater in DM. These data demonstrate that soluble VEGFR-1, an angiogenesis inhibitor, is regulated in skeletal muscle by type 2 DM and ischemia. In the absence of ischemia, despite reductions in both soluble VEGFR-1 and VEGFR-1, VEGF ligand signaling is lower in DM compared with controls. After ischemia, maladaptive upregulation of these receptors further reduces the capacity of VEGF to induce an angiogenic response, which may provide a novel target for therapy.",
author = "Surovi Hazarika and Ayotunde Dokun and Yongjun Li and Popel, {Aleksander S.} and Kontos, {Christopher D.} and Annex, {Brian H.}",
year = "2007",
month = "10",
day = "1",
doi = "10.1161/CIRCRESAHA.107.160630",
language = "English (US)",
volume = "101",
pages = "948--956",
journal = "Circulation Research",
issn = "0009-7330",
publisher = "Lippincott Williams and Wilkins",
number = "9",

}

TY - JOUR

T1 - Impaired angiogenesis after hindlimb ischemia in type 2 diabetes mellitus

T2 - Differential regulation of vascular endothelial growth factor receptor 1 and soluble vascular endothelial growth factor receptor 1

AU - Hazarika, Surovi

AU - Dokun, Ayotunde

AU - Li, Yongjun

AU - Popel, Aleksander S.

AU - Kontos, Christopher D.

AU - Annex, Brian H.

PY - 2007/10/1

Y1 - 2007/10/1

N2 - Deficient angiogenesis after ischemia may contribute to worse outcomes of peripheral arterial disease in patients with diabetes mellitus (DM). Vascular endothelial growth factor (VEGF) and its receptors promote angiogenesis. We hypothesized that in peripheral arterial disease, maladaptive changes in VEGF ligand/receptor expression could account for impaired angiogenesis in DM. Skeletal muscle from diet-induced, type 2 diabetic (DM) and age-matched normal chow (NC)-fed mice was collected at baseline and 3 and 10 days after hindlimb ischemia and analyzed for expression of VEGF (n=10 per group), full-length VEGF receptor (VEGFR)-1, soluble VEGFR-1, and markers of downstream VEGF signaling (n=20 per group) using ELISA, reverse transcriptase-polymerase chain reaction, and Western blots. In the absence of ischemia, DM mice had increased VEGF (NC versus DM: 26.6±2.6 versus 53.5±8.8 pg/mg protein; P<0.05), decreased soluble and membrane-bound VEGFR-1 (NC versus DM: 1.44±0.30 versus 0.85±0.08 and 1.03±0.10 versus 0.72±0.10, respectively; P<0.05), decreased phospho-AKT/AKT and phospho-endothelial NO synthase/endothelial NO synthase (NC versus DM: 0.76±0.2 versus 0.38±0.1 and 0.36±0.06 versus 0.25±0.04, respectively; P<0.05), and no change in VEGFR-2. After ischemia, both DM and NC had comparable increases in VEGF-A. VEGFR-1 and soluble VEGFR-1 expression increased in both groups, but the fold increase was significantly greater in DM. These data demonstrate that soluble VEGFR-1, an angiogenesis inhibitor, is regulated in skeletal muscle by type 2 DM and ischemia. In the absence of ischemia, despite reductions in both soluble VEGFR-1 and VEGFR-1, VEGF ligand signaling is lower in DM compared with controls. After ischemia, maladaptive upregulation of these receptors further reduces the capacity of VEGF to induce an angiogenic response, which may provide a novel target for therapy.

AB - Deficient angiogenesis after ischemia may contribute to worse outcomes of peripheral arterial disease in patients with diabetes mellitus (DM). Vascular endothelial growth factor (VEGF) and its receptors promote angiogenesis. We hypothesized that in peripheral arterial disease, maladaptive changes in VEGF ligand/receptor expression could account for impaired angiogenesis in DM. Skeletal muscle from diet-induced, type 2 diabetic (DM) and age-matched normal chow (NC)-fed mice was collected at baseline and 3 and 10 days after hindlimb ischemia and analyzed for expression of VEGF (n=10 per group), full-length VEGF receptor (VEGFR)-1, soluble VEGFR-1, and markers of downstream VEGF signaling (n=20 per group) using ELISA, reverse transcriptase-polymerase chain reaction, and Western blots. In the absence of ischemia, DM mice had increased VEGF (NC versus DM: 26.6±2.6 versus 53.5±8.8 pg/mg protein; P<0.05), decreased soluble and membrane-bound VEGFR-1 (NC versus DM: 1.44±0.30 versus 0.85±0.08 and 1.03±0.10 versus 0.72±0.10, respectively; P<0.05), decreased phospho-AKT/AKT and phospho-endothelial NO synthase/endothelial NO synthase (NC versus DM: 0.76±0.2 versus 0.38±0.1 and 0.36±0.06 versus 0.25±0.04, respectively; P<0.05), and no change in VEGFR-2. After ischemia, both DM and NC had comparable increases in VEGF-A. VEGFR-1 and soluble VEGFR-1 expression increased in both groups, but the fold increase was significantly greater in DM. These data demonstrate that soluble VEGFR-1, an angiogenesis inhibitor, is regulated in skeletal muscle by type 2 DM and ischemia. In the absence of ischemia, despite reductions in both soluble VEGFR-1 and VEGFR-1, VEGF ligand signaling is lower in DM compared with controls. After ischemia, maladaptive upregulation of these receptors further reduces the capacity of VEGF to induce an angiogenic response, which may provide a novel target for therapy.

UR - http://www.scopus.com/inward/record.url?scp=37349118333&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=37349118333&partnerID=8YFLogxK

U2 - 10.1161/CIRCRESAHA.107.160630

DO - 10.1161/CIRCRESAHA.107.160630

M3 - Article

VL - 101

SP - 948

EP - 956

JO - Circulation Research

JF - Circulation Research

SN - 0009-7330

IS - 9

ER -