Korean J Pediatr.  2005 Aug;48(8):886-893.

Inhibition of Vascular Endothelial Growth Factor-induced Endothelial Cell Differentiation by Intravenous Immunoglobulin and Methylprednisolone

• Choi HA
• Ha KH
• Yoon JS
• Lee Y
• Lee JS
• Han JW

Abstract

PURPOSE
Kawasaki disease is the most common cause of systemic vasculitis in children less than 5 years of age. Recent immunohistochemistry findings suggest that many vascular growth factors play a role in the formation of the coronary artery lesions. Active remodeling of the coronary artery lesions in Kawasaki disease continues in the form of intimal proliferation and neoangiogenesis for several years after the onset of the disease. Intravenous immunoglobulin (IVIG) and corticosteroid have been used in the treatment of Kawasaki disease but the exact mechanism is not clear. We have investigated that IVIG and corticosteroid inhibited vascular endothelial growth factor (VEGF)- induced tube formation of endothelial cells in vitro on Matrigel assay. METHODS: Human umbilical vein endothelial cells (HUVECs) were cultured and seeded on Matrigel coated 24 well plates in medium with or without the following agents: VEGF, VEGF plus IVIG, VEGF plus VEGF antibody, VEGF plus methylprednisolone, VEGF, IVIG plus methylprednisolone for 18 hours. The total length of tube structures in each photograph was quantified. RESULTS: IVIG significantly inhibited the proliferation of HUVECs. The inhibitory effect of IVIG was also reversible. In the meantime, VEGF induced the differentiation of HUVECs into capillary like structures on Matrigel, which was inhibited by VEGF antibody in a dose-dependent manner. Interestingly, IVIG and methylprednisolone inhibited VEGF-induced tube formation of HUVECs. IVIG was more effective in inhibition than methylprednisolone alone. CONCLUSION: We revealed that VEGF induced the differentiation of HUVECs and this effect was inhibited by IVIG and methylprednisolone.

Keyword

Endothelial cell; Vascular endothelial growth factor (VEGF); Intravenous immunoglobulin (IVIG); Methylprednisolone

MeSH Terms

Capillaries
Child
Coronary Vessels
Endothelial Cells*
Human Umbilical Vein Endothelial Cells
Humans
Immunoglobulins*
Immunoglobulins, Intravenous
Immunohistochemistry
Intercellular Signaling Peptides and Proteins
Methylprednisolone*
Mucocutaneous Lymph Node Syndrome
Systemic Vasculitis
Vascular Endothelial Growth Factor A
Immunoglobulins
Immunoglobulins, Intravenous
Intercellular Signaling Peptides and Proteins
Methylprednisolone
Vascular Endothelial Growth Factor A