Vascular Endothelial Growth Factor and Transforming Growth Factor-α and -β1 Are Released From Human Cultured Gingival Epithelial Sheets

2002 ◽  
Vol 73 (7) ◽  
pp. 748-753 ◽  
Author(s):  
Manabu Momose ◽  
Masashi Murata ◽  
Yumi Kato ◽  
Kazushisa Yamazaki ◽  
Chikara Shinohara ◽  
...  
CHEST Journal ◽  
2000 ◽  
Vol 118 (6) ◽  
pp. 1747-1753 ◽  
Author(s):  
Dong-sheng Cheng ◽  
Y. C. Gary Lee ◽  
Jeffrey T. Rogers ◽  
Elizabeth A. Perkett ◽  
J. Philip Moyers ◽  
...  

2004 ◽  
Vol 286 (3) ◽  
pp. L539-L545 ◽  
Author(s):  
Altaf S. Kazi ◽  
Shidan Lotfi ◽  
Elena A. Goncharova ◽  
Omar Tliba ◽  
Yassine Amrani ◽  
...  

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.


2009 ◽  
Vol 133 (8) ◽  
pp. 1215-1218
Author(s):  
Michelle B. Crosby ◽  
G. Baker Hubbard ◽  
Brenda L. Gallie ◽  
Hans E. Grossniklaus

Abstract Retinoblastoma is the most common primary intraocular tumor of childhood and may be heritable or occur sporadically. Anterior diffuse retinoblastoma is an uncommon variant that is thought to be sporadic. We describe a child with anterior diffuse retinoblastoma who presented with a pseudohypopyon. Genetic analysis showed a germline mutation of the RB1 allele that is potentially heritable. Immunofluorescence staining was positive for transforming growth factor β and for vascular endothelial growth factor and negative for inducible nitric oxide synthase and for hypoxia inducible factor α in the tumor seeds, indicating acquisition of nonischemia-mediated survival factors of the tumor seeds in the aqueous humor.


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