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This study hypothesized that exercise increases adiponectin levels, activating PP2A to reduce Tau hyperphosphorylation and enhance hippocampal plasticity. The study utilized adiponectin knockout (\n                    <jats:italic>Adipo<\/jats:italic>\n                    <jats:sup>\u2212\/\u2212<\/jats:sup>\n                    ) and hippocampal\u2010specific PP2A knockdown (PP2A\u2010KD) in mice with 3\u2010week voluntary running and\/or chronic stress to assess changes in Tau phosphorylation, adult neurogenesis, and cognitive performance. Running improved cognitive deficits and reduced Tau hyperphosphorylation in association with increased adiponectin levels and enhanced PP2A activity in stressed mice.\n                    <jats:italic>A<\/jats:italic>\n                    diponectin deficiency impaired cognitive performance, increased Tau phosphorylation, and decreased PP2A activity. Mechanistically, adiponectin is dispensable for running to increase PP2A activity, reduce Tau hyperphosphorylation, and restore hippocampal neurogenesis, leading to cognitive improvement. Hippocampal\u2010specific PP2A knockdown diminished the beneficial effects of running, indicating that PP2A is downstream of adiponectin's action. This study provides mechanistic insights into how exercise reduces AD\u2010like neuropathology, emphasizing the critical role of the adiponectin\u2010PP2A pathway in mitigating Tau hyperphosphorylation and suggesting a potential therapeutic target for AD through modulation of this pathway.\n                  <\/jats:p>","DOI":"10.1111\/acel.70447","type":"journal-article","created":{"date-parts":[[2026,3,17]],"date-time":"2026-03-17T12:54:47Z","timestamp":1773752087000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["The Adiponectin\u2010\n                    <scp>PP2A<\/scp>\n                    Pathway Confers Cognitive Benefits of Physical Exercise Against Chronic Stress\u2010Induced Tau Hyperphosphorylation in the Hippocampus"],"prefix":"10.1111","volume":"25","author":[{"given":"Hui\u2010Hui","family":"Guo","sequence":"first","affiliation":[{"name":"Department of Rehabilitation Medicine The Fifth Affiliated 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