Fig. 4.
Unidirectional shear stress increases expression of eNOS mRNA. A: amount of eNOS mRNA in endothelial cells exposed to no shear stress or to 6 h of shear stress at 15 dyn/cm2. *P < 0.05 vs. static. B: exposure of endothelial cells to shear stress for 6 h increased the amount of eNOS protein as reflected in eNOS immunofluorescence intensity in bovine aortic endothelial cells. Data from Ranjan et al. (107). *P < 0.05 vs. static. C: dose-response relationship of the effects of shear stress on eNOS mRNA polyadenylation. Increasing amounts of shear produce progressively longer transcripts. *P < 0.05 vs. dyn/cm2. D: increasing the duration of exposure of endothelial cells to shear stress also results in increased eNOS mRNA polyadenylation. Increasing duration of shear stress exposure at 15 dyn/cm2 produce progressively longer transcripts. *P < 0.05 vs. 0 h. **P < 0.05 vs. 0 h. Data for A, C, and D are taken with permission from Weber et al. (135) and data illustrated in B are taken from Ranjan et al. (107).