Light Effect on Water Viscosity: Implication for ATP Biosynthesis.
Level 5 - mechanism / opinion, no new human data
In vitro biophysical experiment and mechanism-based theoretical model without human data
PubMed 26154113 · doi:10.1038/srep12029
What was done
The authors proposed a physicochemical mechanism for mitochondrial ATP synthesis based on interfacial water viscosity variations rather than bulk water assumptions. They investigated the properties of interfacial water layers using an experimental method combining nanoindentation with near-infrared (NIR) laser irradiation.
What was found
The abstract reports no numerical values, effect sizes, or statistical metrics. It describes the qualitative finding that laser light modulates interfacial water layer viscosity, offering a mechanistic explanation for how near-infrared light increases ATP synthesis and reactive oxygen species decrease it.
Why it matters
It offers a biophysical explanation for the cellular effects of photobiomodulation, suggesting that near-infrared light may facilitate ATP synthase rotation by lowering the viscosity of surrounding interfacial water layers.
Limits
The abstract presents no quantitative data, sample sizes, or replication numbers. The findings are based on in vitro physical modeling and theoretical reasoning rather than direct in vivo measurements of ATP synthesis in living organisms.
Cited by
- supports Long-wavelength light reduces the viscosity of nanoscopic water surrounding mitochondria, which increases the rotational speed of the ATP synthase motor.
- partial Infrared light reduces the viscosity of water surrounding ATP synthase, enabling its rotor to spin faster and produce more ATP.