We used brain tissues from humans, HIP, WT and AKO rats. Tissues were processed as previously described6 (link),29 (link). Antibodies against amylin (1:200, T-4157, Bachem-Peninsula Laboratories, CA), glial fibrillary acidic protein (GFAP; 1:600, MAB360, Millipore, MA) or myelin basic protein (MBP; 1:5,000, AMAB91064, clone CL2829, Sigma, MO) were the primary antibodies. Anti-mouse or anti-rabbit IgG (1:50, A3562, A3687, Sigma, MO) were secondary antibodies. The specificity of the amylin antibody in both human and rat brain tissues was established in previous studies6 (link),7 (link),29 (link).