Furthermore, among the senescent cells, 78% were astrocytes (GFAP+) in AD patients, while only 29% were astrocytes in Braak II subjects (2.69 fold increase, 78.77 ± 20.40% vs. 29.28 ± 26.75%, p < 0.05) (Fig. 7 C). This evidence concerns the gene GFAP and Alzheimer disease.