ArticleiScience2026
Sleeve gastrectomy improves cognition by enhancing central ERK/CREB/BDNF pathway through increased GIP secretion.
Article in iScience, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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6 authors.
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Abstract
Sleeve gastrectomy (SG) was used to probe the gut-brain axis in Alzheimer's disease (AD). In APP/PS1/Tau triple transgenic mice, SG improved glucose tolerance and insulin sensitivity without lasting effects on body weight or food intake. SG significantly improved cognitive performance and reduced anxiety-like behavior, attenuated neuronal damage and pTau accumulation in the hippocampal CA3 region, and increased both peripheral levels and hippocampal immunoreactivity of GIP and GLP-1 along with ERK/CREB/BDNF pathway activity. In HT22 cells, GIP receptor knockdown exacerbated Aβ-induced pTau and suppressed this pathway, whereas GLP-1 acted synergistically. These findings indicate that SG could improve cognition in non-obese AD mice largely through GIP/GLP-1 signaling rather than metabolic changes, supporting dual incretin targeting as a therapeutic strategy for AD.
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