AHR and early-onset autosomal dominant Alzheimer disease: Therefore, taking into account the central role that AHR has in inflammation, and the scarce information about human AHR in conditions characterized by chronic low-grade inflammation, like aging and Alzheimer’s disease, in the present study, we evaluated the changes in the expression of AHR and GFAP in human hippocampal post-mortem tissue from young and elder subjects.