College of Life Science, Shaanxi Normal University, Xi’an, China;
Learning; and; Memory; TTR—Transthyretin; AD—Alzheimer; Disease; CSF—Cerebrospinal; Fluid; MAPK—Mitogen-Activated; Protein; Kinases; CREB—cAMP; Response; Element; Binding; Protein; ERK—Extracellular; Receptor; Kinases; Aβ—Amyloid; Beta; LTP—Long-Term; Potentiation; LTD—Long-Term; Depression;