we detected that 100 nmol/L
Ang II, through activation of the AT1 receptors, induces NOX and
mitochondrial-dependent ROS production responsible for approximately
half of the increase in sarcomere shortening. Moreover, this concentration
of the hormone also stimulates the NHE-1 probably through
the same pathway, since the increase in NHE-1 activity was prevented
by the NOX inhibitor apocynin.