NGFR and Alzheimer disease: The reports about p75NTR in AD are not that clear: one study observed an upregulation of p75NTR in hippocampal tangle-bearing neurons (Hu et al.2002), another unchanged cortical levels without referring to tangle pathology (Counts et al.2004; Hock et al.1998; Perry et al.1993), while in nbM, p75NTR appears to be unchanged (Ginsberg et al.2006b; Mufson et al.2003) or decreased (Kerwin et al.1992; Mufson et al.2002; Salehi et al.2000).