Impact of Superoxide Dismutase on Nitric Oxide and Peroxynitrite Levels in the Microcirculation - A Computational Model

Author(s):  
Miriam Defibaugh Chavez ◽  
Nisha Lakshmanan ◽  
Mahendra Kavdia
2002 ◽  
Vol 36 (7) ◽  
pp. 755-758 ◽  
Author(s):  
Lena M. Jonsson ◽  
Daryl D. Rees ◽  
Thomas Edlund ◽  
Stefan L. Marklund

1995 ◽  
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Eiji Kumura ◽  
Toshiki Yoshimine ◽  
Shigeki Kubo ◽  
Satonori Tanaka ◽  
Toru Hayakawa ◽  
...  

2001 ◽  
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ROBIN H. STEINHORN ◽  
GEORGE ALBERT ◽  
DANIEL D. SWARTZ ◽  
JAMES A. RUSSELL ◽  
CAROLYN R. LEVINE ◽  
...  

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Mustafa Sarsilmaz ◽  
Sadik Sogut ◽  
Birsen Ozyurt ◽  
Huseyin Ozyurt ◽  
...  

2014 ◽  
Vol 21 (4) ◽  
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Pauline Leveille ◽  
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Pascale Chavatte-Palmer ◽  
...  

1990 ◽  
Vol 258 (1) ◽  
pp. F162-F167 ◽  
Author(s):  
P. J. Shultz ◽  
A. E. Schorer ◽  
L. Raij

We have investigated whether endothelium-derived relaxing factor (EDRF) and nitric oxide (NO), a substance proposed to be one of the EDRFs, could elicit biochemical and biological responses in rat glomerular mesangial cells (MC). In wells with MC alone, guanosine 3',5'-cyclic monophosphate (cGMP) levels were 2.6 +/- 0.6 fmol/microgram protein, and bradykinin did not affect these levels, whereas in coincubation experiments with bovine aortic EC and rat MC, cGMP levels in MC increased to 44.6 +/- 21 fmol/micrograms protein after bradykinin stimulation (P less than 0.05). This effect was potentiated by superoxide dismutase and inhibited by hemoglobin and L-NG-monomethyl arginine, a specific inhibitor of EDRF synthesis. Increases in cGMP were also observed when MC were incubated directly with NO and were potentiated by superoxide dismutase and inhibited by hemoglobin. We also tested whether NO could inhibit angiotensin II (ANG II)-induced reductions in cross-sectional area (CSA) of MC. When MC were exposed to ANG II only, 65% of the cells underwent a significant reduction in CSA, as measured by digital image analysis. However, when MC were incubated with ANG II and NO, only 10% of cells responded (P less than 0.04). These studies demonstrate that EDRF and NO induce significant biochemical and functional responses in rat glomerular MC and suggest that communication between EC and MC may be important in regulation of glomerular function.


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