CAT and diabetes mellitus: Due to the fact that the fruit of the raspberry plant has antioxidant properties and can prevent the side effects of oxidative stress caused by diabetes (Zia-Ul-Haq et al., 2014 ▶), the main aim of this study was to determine the protective effects of the fruit extract of raspberry (Rubus fruticosus L.)on pituitary-gonadal axis, and serum levels of NO, and MDA, and SOD and CAT activity in streptozotocin (STZ)-diabetic male rats.