Nucl Med Mol Imaging.  2014 Sep;48(3):225-229. 10.1007/s13139-014-0273-5.

Effect of Angiogenesis Induced by Consecutive Intramuscular Injections of Vascular Endothelial Growth Factor in a Hindlimb Ischemic Mouse Model

Affiliations
  • 1Department of Nuclear Medicine, Research Institute of Clinical Medicine, Cyclotron Research Center, Institute forMedical Sciences, Molecular Imaging & Therapeutic Medicine Research Center, Chonbuk National University Medical School and Hospital, Jeonju, S
  • 2Department of Biomedical Engineering, Chonnam National University, Yeosu, South Korea.
  • 3Department of Nuclear Medicine, Chonbuk National University Medical School and Hospital, 634-18, Geumam-dong, Dukjin-gu, Jeonju, Republic of Korea. jayjeong@chonbuk.ac.kr

Abstract

PURPOSE
Angiogenesis plays a major role in various physiological and pathological situations. Thus, an angiogenic therapy with vascular endothelial growth factor (VEGF) has been commonly recommended as a representative therapeutic solution to recover the insufficient blood supply of collateral vessels in an ischemic lesion. In this study, the injection method and injection time point of VEGF proteins were focused to discover how to enhance the angiogenic effect with VEGF.
METHODS
Mouse models (n=15) were divided into control, VEGF treatment by intra-venous injection (VEGF-IV) and VEGF treatment by intra-muscular injection (VEGF-IM). Right proximal femoral arteries of mice were firmly sutured to obstruct arterial blood-flow. In the VEGF-IV treatment group, VEGF proteins were injected into the tail vein and, in the VEGF-IM treatment group, VEGF proteins were directly injected into the ischemic site of the right thigh after postoperative day 5, 10, 15, 20 and 25 follow-ups. Blood-flow images were acquired by 99mTc Gamma Image Acquisition System to compare the ischemic-to-non-ischemic blood-stream ratio at postoperative days 5, 15, and 30.
RESULTS
VEGF-IM treatment significantly induced higher an angiogenic effect rather than both the control group (P=0.008) and VEGF-IV treatment group (P=0.039) at the 30th day.
CONCLUSION
During all experiments, angiogenesis of VEGF-IM treatment represented the most evident effect compared with control and VEGF-IV group in a mouse model of hindlimb ischemia.

Keyword

VEGF; Angiogenesis; Consecutive injection; Perfusion; Gamma imaging; Hindlimb ischemia

MeSH Terms

Animals
Femoral Artery
Follow-Up Studies
Hindlimb*
Injections, Intramuscular*
Ischemia
Mice*
Perfusion
Thigh
Vascular Endothelial Growth Factor A*
Veins
Vascular Endothelial Growth Factor A
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