SOD1 and diabetes mellitus: Loganin also showed evident anti‐oxidative stress, anti‐apoptotic and anti‐inflammatory effects on DM‐induced reproductive damage by restoring glutathione (GSH) level and superoxide dismutase (SOD) activity, as well as reducing reactive oxygen species (ROS) level and Bax/Bcl‐2 ratio in vivo and in vitro.