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July 12, 2026Alzheimer s Research & TherapyOpen Access

In vivo evidence for soluble Aβ oligomer-driven neuronal metabolic dysfunction in 5xFAD mice

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Authors

CDChaynita DashoraAPAnant B. Patel

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Overview

Randomized trial evaluates Aβ species roles in cognitive decline and metabolic impairment in Alzheimer's disease models, indicating crucial mechanisms.

Key Points

  • The study investigates how different forms of amyloid-β contribute to neuronal metabolic dysfunction across stages of Alzheimer's disease.
  • 5xFAD and wild-type mice assessed for cognitive performance and Aβ levels at 3, 6, and 12 months of age.
  • Neurometabolic activity evaluated ex vivo using 1H-13C-NMR spectroscopy and administration of labeled glucose and acetate.
  • Cognitive decline and metabolic changes measured over time in relation to Aβ species.
  • 5xFAD mice showed cognitive decline from 6 months, worsening by 12 months.
  • Significant reductions in glutamatergic (0.145 ± 0.031 vs. 0.172 ± 0.016 µmol/g/min, p = 0.035) and GABAergic activity (0.027 ± 0.006 vs. 0.033 ± 0.003 µmol/g/min, p = 0.028) by 3 months.
  • Astrocytic activity increased at 12 months, showing a transition from neuronal impairment to glial activation, with parallel rise in inflammation.

Cite This Study

Dashora et al. (2026) studied this question.

synapsesocial.com/papers/6a53315f4f7abc118aded940https://doi.org/10.1186/s13195-026-02130-4
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Progressive Hippocampal Neuroarchitecture Changes in the 5×FAD Alzheimer’s Disease Mouse Model2025
  2. 2Impairment in re-learning of olfactory behaviors in mice expressing intracellular amyloid-β protein oligomers2025
  3. 3Systemic lipid and glucose modulation differentially affects cognitive function and neuroinflammation in a mouse model of Alzheimer’s disease2025
  4. 4Glucose metabolism alterations and Aβ deposition in AD and FTD are related to the distribution of neurotransmitter systems2025 · 3 citations
  5. 5Slow-wave–modulated high-frequency oscillations reveal early network abnormalities in pre-pathological 5XFAD mice2026