Fig. 5From: Norepinephrine protects against cochlear outer hair cell damage and noise-induced hearing loss via α2A-adrenergic receptorSchematic diagram of potential protective mechanisms of NE against NIHL via α2A-AR. The levels of ROS increased after noise exposure in OHCs, leading to cell death and NIHL. Treatment with NE, an activator of α2A-AR, attenuated oxidative stress and protected from cell injuryBack to article page