scholarly journals IL-17A Differentially Regulates Corneal Vascular Endothelial Growth Factor (VEGF)-A and Soluble VEGF Receptor 1 Expression and Promotes Corneal Angiogenesis after Herpes Simplex Virus Infection

2012 ◽  
Vol 188 (7) ◽  
pp. 3434-3446 ◽  
Author(s):  
Amol Suryawanshi ◽  
Tamara Veiga-Parga ◽  
Pradeep B. J. Reddy ◽  
Naveen K. Rajasagi ◽  
Barry T. Rouse
Keyword(s):  
Vascular Endothelial Growth Factor ◽  
Herpes Simplex Virus ◽  
Herpes Simplex ◽  
Growth Factor ◽  
Herpes Simplex Virus Infection ◽  
Vegf Receptor ◽  
Vascular Endothelial ◽  
Corneal Angiogenesis ◽  
Simplex Virus ◽  
Endothelial Growth Factor

Vascular endothelial growth factor-induced secretion of fibronectin is ERK dependent

2004 ◽  
Vol 286 (3) ◽  
pp. L539-L545 ◽  
Author(s):  
Altaf S. Kazi ◽  
Shidan Lotfi ◽  
Elena A. Goncharova ◽  
Omar Tliba ◽  
Yassine Amrani ◽  
...  
Keyword(s):  
Extracellular Matrix ◽  
Vascular Endothelial Growth Factor ◽  
Smooth Muscle ◽  
Growth Factor ◽  
Transforming Growth Factor ◽  
Airway Remodeling ◽  
Vegf Receptor ◽  
Vascular Endothelial ◽  
Matrix Deposition ◽  
Endothelial Growth Factor

In severe asthma, cytokines and growth factors contribute to the proliferation of smooth muscle cells and blood vessels, and to the increased extracellular matrix deposition that constitutes the process of airway remodeling. Vascular endothelial growth factor (VEGF), which regulates vascular permeability and angiogenesis, also modulates the function of nonendothelial cell types. In this study, we demonstrate that VEGF induces fibronectin secretion by human airway smooth muscle (ASM) cells. In addition, stimulation of ASM with VEGF activates ERK, but not p38MAPK, and fibronectin secretion is ERK dependent. Both ERK activation and fibronectin secretion appear to be mediated through the VEGF receptor flt-1, as evidenced by the effects of the flt-1-specific ligand placenta growth factor. Finally, we demonstrate that ASM cells constitutively secrete VEGF, which is increased in response to PDGF, transforming growth factor-β, IL-1β, and PGE2. We conclude that ASM-derived VEGF, through modulation of the extracellular matrix, may play an important role in airway remodeling seen in asthma.

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