CAT and Alzheimer disease: GA at the dose of 30 mg/kg also increased passive avoidance and memory performance as well as enhanced non-enzymatic or enzymatic functions such as dismutase (SOD), catalase (CAT), and glutathione peroxidase (GPx) activities with diminishing the level of thiobarbituric acid (TBARS) substance in the hippocampus areas in intracerebroventricular- streptozotocin (STZ) (ICV-STZ) induced AD rates [104].