Aging Is a Sticky Business.
Level 5 - mechanism / opinion, no new human data
Mechanistic theory paper and narrative review without controlled clinical data.
PubMed 29570422 · doi:10.1089/pho.2017.4393
What was done
The authors presented a biophysical model explaining how low-level red to near-infrared (NIR) light from lasers or LEDs accelerates wound healing. They discussed results from in vitro tests and laboratory experiments alongside an illustrative clinical example of LED treatment for an edematous limb ulcer to support their proposed mechanism.
What was found
The abstract reports no quantitative values, effect sizes, or statistical metrics. It describes a theoretical model where reactive oxygen species (ROS) increase the viscosity of nanoscopic interfacial water layers in mitochondria and the extracellular matrix as tissues age. The authors propose that red-to-NIR light reverses this elevated viscosity, restoring mitochondrial function and ATP synthase rotation.
Why it matters
This framework offers an alternative physical mechanism (interfacial water viscosity modulation) to the conventional cytochrome c oxidase photoacceptor model in photobiomodulation research.
Limits
The abstract describes a theoretical hypothesis illustrated by anecdotal and laboratory observations without providing sample sizes, control groups, quantitative outcomes, or clinical trial validation.
Cited by
- supports Long-wavelength light reduces the viscosity of nanoscopic water surrounding mitochondria, which increases the rotational speed of the ATP synthase motor.