Far infrared therapy improves vascular function by enhancing endothelial function and decreasing arterial stiffness...

Area of Science:

• Cardiovascular Research
• Medical Physics
• Biomedical Engineering

Background:

• Far-infrared radiation (FIR) is recognized for its therapeutic potential in cardiovascular health.
• FIR therapy may enhance endothelial function and reduce arterial stiffness, key indicators of cardiovascular integrity.
• This study investigates the mechanisms of FIR's vascular effects, focusing on gene expression and vascular responses.

Purpose of the Study:

• To investigate the effect of localized FIR radiation on vascular function, specifically endothelial function and arterial stiffness in healthy subjects.
• To examine the impact of FIR on redox-associated gene expression and vascular responses.
• To test the hypothesis that FIR improves vascular function via antioxidative and anti-inflammatory mechanisms, partly through cytoprotective gene upregulation.

Main Methods:

• A single-blinded, pilot study involving 50 healthy participants.
• Treatments included FIR radiation, heat, or placebo applied to the upper back.
• Vascular function assessed via laser Doppler imaging with iontophoresis (endothelial function) and SphygmoCor (arterial stiffness).
• Gene expression analysis of peripheral blood mononuclear cells (PBMCs) focused on redox-associated cytoprotective genes and nitric oxide synthase (NOS).

Main Results:

• FIR radiation significantly enhanced endothelial function and reduced arterial stiffness in healthy individuals.
• Gene expression analysis revealed upregulation of cytoprotective genes, including NOS3, TXNRD1, and HSP70, following FIR exposure.
• These findings support the proposed mechanisms of FIR's vascular benefits.

Conclusions:

• FIR radiation effectively improves vascular function, enhancing endothelial function and decreasing arterial stiffness.
• These benefits are likely mediated by the activation of cytoprotective pathways.
• FIR therapy presents a promising non-invasive strategy for supporting cardiovascular health and potentially preventing cardiovascular disease.