GRIN2B and post-traumatic stress disorder: The administration of Lycium barbarum polysaccharide (LBP, 25, 50, and 100 mg/kg) to rats for three consecutive weeks intragastrically was found to effectively inhibit the excessive activation of NR2B in the prefrontal cortex of rats, reduce the expression of calmodulin kinase II (CaMKII), a crucial downstream signaling molecule of NMDAR, and alleviate depressive-like behaviors in rats with PTSD (Chu, 2019).