G-CSF prevents the progression of atherosclerosis and neointimal formation in rabbits

Area of Science:

• Cardiovascular Science
• Hematology
• Immunology

Background:

• Granulocyte colony-stimulating factor (G-CSF) is known to prevent left ventricular remodeling post-myocardial infarction.
• The impact of G-CSF on atherosclerosis progression remains largely unexplored.

Purpose of the Study:

• To investigate the therapeutic potential of G-CSF in preventing and treating atherosclerosis.
• To evaluate G-CSF's effects on established atherosclerosis and vascular injury models in rabbits.

Main Methods:

• Two rabbit models of atherosclerosis were utilized: myocardial infarction-prone Watanabe heritable hyperlipidemic (WHHL-MI) rabbits and a vascular injury model created by iliac artery angioplasty.
• Rabbits received G-CSF or saline treatment, and outcomes were assessed by measuring coronary artery stenosis, aortic lipid plaque area, and neointima/media ratio.

Main Results:

• G-CSF significantly reduced coronary artery stenosis and thoracic aorta lipid plaque area in WHHL-MI rabbits.
• In the vascular injury model, G-CSF significantly inhibited the increase in neointima/media ratio.
• G-CSF accelerated arterial reendothelialization, an effect diminished by nitric oxide synthase inhibition.

Conclusions:

• G-CSF demonstrates a significant therapeutic potential for inhibiting atherosclerosis progression.
• The findings suggest G-CSF may be a valuable agent for managing atherosclerotic cardiovascular diseases.
• G-CSF's pro-reendothelialization effect, possibly mediated by nitric oxide, contributes to its anti-atherosclerotic properties.