Hydrogen dioxide increases the expression of vascular endothelial growth factor in human bronchiolar epithelium cell via a PI3K-dependent pathway / 南方医科大学学报
Journal of Southern Medical University
;
(12): 228-231, 2010.
Article
in Chinese
| WPRIM
| ID: wpr-269587
ABSTRACT
<p><b>OBJECTIVE</b>To investigate the effect of hydrogen dioxide (H(2)O(2)) on the expression of vascular endothelial growth factor (VEGF) in human bronchiolar epithelial (HBE) cells.</p><p><b>METHODS</b>MTT assay was used to assess HBE cell viability after exposure to different concentrations of H(2)O(2). VEGF/beta-actin gene fragments were amplified simultaneously by RT-PCR from the total HBE cell RNA, and VEGF protein expression in the cells was detected using ELISA.</p><p><b>RESULTS</b>The exposure to 200 micromol/L H(2)O(2) did not obviously affected the cell viability. Compared with those in the control cell, VEGF165/beta-actin and VEGF189/beta-actin ratios were significantly increased in the cells after treatment with 50, 200, and 600 micromol/L H(2)O(2) (P<0.05). The protein expression of VEGF significantly increased after 50 micromol/L H(2)O(2) treatment (P<0.05), but significantly decreased with pretreatment with the PI3K inhibitor Ly294002 (P>0.05).</p><p><b>CONCLUSION</b>Oxidative stress increases the expression of VEGF via a PI3K-dependent pathway in human bronchiolar epithelial cells, which may play an important role in the onset and maintenance of chronic inflammation in asthma.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Pharmacology
/
Physiology
/
Bronchi
/
Signal Transduction
/
Cell Line
/
Actins
/
Oxidative Stress
/
Phosphatidylinositol 3-Kinases
/
Cell Biology
/
Vascular Endothelial Growth Factor A
Limits:
Humans
Language:
Chinese
Journal:
Journal of Southern Medical University
Year:
2010
Type:
Article
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