Photobiomodulation and nitric oxide signaling

Area of Science:

• Cardiovascular Science
• Biomedical Engineering
• Photomedicine

Background:

• Endothelial nitric oxide (NO) deficiency is a key factor in cardiovascular diseases.
• Therapeutic strategies to increase NO bioavailability have shown limited clinical success.
• Photobiomodulation (PBM) using low-power near-infrared (NIR) light demonstrates beneficial effects.

Purpose of the Study:

• To review recent findings on photobiomodulation (PBM) and its effects on nitric oxide (NO).
• To explore the potential of PBM as a therapeutic approach for cardiovascular diseases.
• To highlight the advantages of NIR-II window light for PBM.

Main Methods:

• Review of recent scientific literature on PBM, NO, and endothelial function.
• Analysis of studies investigating the mechanisms of PBM in relation to NO production.
• Focus on the application of NIR light, particularly in the NIR-II window.

Main Results:

• PBM consistently improves endothelial dysfunction by increasing bioavailable NO in a dose-dependent manner.
• NIR light, especially in the NIR-II window (1000-1700 nm), offers enhanced tissue penetration and reduced absorption for PBM.
• PBM presents a feasible therapeutic strategy for cardiovascular complications linked to NO deficiency.

Conclusions:

• PBM is an emerging therapeutic modality for cardiovascular diseases.
• Augmenting NO bioavailability through PBM offers a promising treatment avenue.
• NIR-II window PBM holds significant potential due to its optimal light penetration properties.