GAL and Alzheimer disease: Galanin plays crucial roles in memory and learningand has possible involvements in the therapeutics of neurodegenerativediseases.115 Interestingly, it has beenshown that there is a functional link between galanin and cholinergicin AD.116 Moreover, production of amyloidplaques induces formation of hippocampal cholinergic and galaninergicneurons in a transgenic mouse model.117 This confirms the neuroprotective role of galanin against Aβtoxicity.