GCG and Alzheimer disease: Moreover, GLP-1 and combination treatment improved the discrimination index in AD mice, while TRF did not (F (4,25) = 3.381, p = 0.0242; p = 0.0112, AD vs. WT; p = 0.0491, AD vs. AD + GLP-1; p = 0.3882, AD vs. AD + TRF; p = 0.0378, AD vs. AD + GLP-1 + TRF.