Chronic oral application of a periodontal pathogen results in brain inflammation, neurodegeneration and amyloid beta production in wild type mice
(A) Confocal microscopy showing extracellular Aβ42 and intracellular Aβ42 in CA1 region of hippocampus. (B) and (C) are insets from (A). Red arrows in (C) point to intracellular Aβ42 (Yellow). Green: astrocytes (GFAP+), Red: Aβ42 detected by rabbit monoclonal antibody, Blue: DAPI. Images are representative of experimental mice (N = 4). (D-F) Images from confocal microscopy of cortex showing intracellular Aβ42 in 2-D (D), 3-D (E) and orthogonal analysis (F). (G-I) Images from confocal microscopy of hippocampus showing extracellular Aβ42 in 2-D (G), 3-D (H), and orthogonal analysis (I). Projections a and b are side views of serial confocal sections of the same area.