Figure 4. Ang II-induced ROS generation in VSMCs is inhibited by AT1R antagonist, antioxidants, and Nox1 siRNA.
ROS generation was evaluated by lucigenin chemiluminescence and DHE fluorescence. VSMCs were stimulated with 1 μmol/L Ang II for short (A) and long (B) term in the absence or in the presence of apocynin (10 μmol/L). (C) VSMCs non-transfected and transfected and with Fat1 or Nox1 siRNA. (D) p47phox translocation was evaluated in VSMCs subjected to membrane and cytosol fractionation after stimulation with 10−6 mol/L Ang II. Membrane to cytosol ratio of p47phox protein content is expressed as % of vehicle. Top panels, representative images of DHE fluorescence. Representative immunoblot: p47phox. Results are mean ± SEM of 6 experiments. *P<0.05, vs vehicle.