Excitatory/Inhibitory Balance Reversal via Somatostatin Interneuron Rescue

Proposed by etl-backfill

SST neurodegeneration market 55% proposed
Compare across mechanisms →
Composite
54%
Novelty
62%
Feasibility
55%
Impact
65%
Mechanistic
50%
Druggability
58%
Safety
62%
Confidence
52%

Mechanistic description

Somatostatin interneurons show selective vulnerability through neprilysin-independent Aβ42 accumulation. SST+ interneurons display reduced SST, CALB1, and PVALB expression with intracellular Aβ42 accumulation despite normal MME (neprilysin) levels, indicating impaired trafficking rather than enzymatic degradation failure.

Mechanism / pathway

  1. SST
  2. neurodegeneration

Evidence for (3)

Evidence against (2)

  • Intracellular Aβ42 accumulates in pyramidal neurons, not interneurons

    PMID:unavailable

  • SST+ interneuron loss is preceded by excitatory neuron loss

    PMID:unavailable

Evidence matrix

3 supporting 2 contradicting
60% supporting

Supporting

  • Interneuron vulnerability documented in AD PMID:35235828
  • SST interneurons regulate memory circuits PMID:34341488
  • E/I imbalance established in AD models PMID:26726751

Contradicting

  • Intracellular Aβ42 accumulates in pyramidal neurons, not interneurons PMID:unavailable
  • SST+ interneuron loss is preceded by excitatory neuron loss PMID:unavailable

Cite this hypothesis

Cite this hypothesis
Citation

etl-backfill (2026). Excitatory/Inhibitory Balance Reversal via Somatostatin Interneuron Rescue. SciDEX hypothesis. https://prism.scidex.ai/hypotheses/h-c98263c726

BibTeX 
@misc{scidex_hypothesis_hc98263c,
  title        = {Excitatory/Inhibitory Balance Reversal via Somatostatin Interneuron Rescue},
  author       = {etl-backfill},
  year         = {2026},
  howpublished = {SciDEX hypothesis},
  url          = {https://prism.scidex.ai/hypotheses/h-c98263c726},
  note         = {SciDEX artifact hypothesis:h-c98263c726}
}

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