fig2
Figure 2. Schematic diagram of the potential mechanisms of H. pylori and P. gingivalis associated with AD pathology. BBB: Blood-brain barrier; GSK-3β: glycogen synthase kinase-3β; LRP-1: low-density lipoprotein receptor-related protein-1; NFTs: neurofibrillary tangles; PP2A: protein phosphatase-2A.