HBOT increases cerebral oxygen tension, creating a favorable microenvironment for NSC proliferation and upregulating BDNF transcription via HIF-1α stabilization, activating TrkB on progenitors. However, adult hippocampal neurogenesis in aged human AD is controversial, and increased BDNF after acute injury does not imply restored neurogenesis in chronic amyloid/tau disease.
This hypothesis posits that mild hyperbaric oxidative stress activates Nrf2-ARE transcriptional programs, upregulating SOD1, catalase, GPx1, and HO-1 without causing cumulative oxidative injury. It provides the most direct framework for parameter optimization via dose-response mapping and represents the strongest balance of mechanistic plausibility and parameter tractability. The hormetic dose-window concept directly addresses the knowledge gap about optimal HBOT parameters.
Convergent vs Divergent Predictions
This summary checks where the selected hypotheses point toward the same target or mechanism, and where they pull in opposite directions.
**Overall**
These hypotheses are mechanistically plausible but overfit to generic HBOT biology. The main weakness is that they infer an “optimal” pressure, duration, and frequency from downstream path...
{
"ranked_hypotheses": [
{
"title": "HBOT at 1.5 ATA for 60 min induces hormetic response via Nrf2 activation, enhancing endogenous antioxidant capacity without causing oxidative damage",
...
HBOT at 1.5 ATA for 60 min induces hormetic respon
**Overall**
These hypotheses are mechanistically plausible but overfit to generic HBOT biology. The main weakness is that they infer an “optimal” pressure, duration, and frequency from downstream path...
{
"ranked_hypotheses": [
{
"title": "HBOT at 1.5 ATA for 60 min induces hormetic response via Nrf2 activation, enhancing endogenous antioxidant capacity without causing oxidative damage",
...