Can we treat ‘light as a drug’ for Photobiomodulation therapy? To satisfy the definition of an active pharmaceutical agent, the substance should be absorbed and capable of changing bodily function that light satisfies. Our understanding of our visual cycle and Vitamin D metabolism are clear evidences for this phenomenon. Advances in optophotonic technologies along with a better understanding of light-tissue interactions, especially in in vivo optical imaging and optogenetics, are spearheading the popularity of biophotonics in biology and medicine. This therapy is defined as the non-thermal use of non-ionizing forms of photonic devices including lasers, LEDs and broad-band light to alleviate pain, inflammation, modulate immune responses and promote wound healing and tissue regeneration. This presentation will provide a brief overview of the two most well understood phenomenon namely, an intracellular mechanism involving cytochrome c oxidase in the mitochondria and an extracellular mechanism involving activation of a latent growth factor, TGF-β1. Surprisingly, despite vast volumes of scientific literature from both clinical and laboratory studies noting the phenomenological evidences for this innovative therapy, there has been inconsistent, non-reproducible clinical outcomes. It is hoped that outlining the molecular mechanism will enable development of more robust, safe and efficacious PBM clinical regimens.
Praveen Arany, "Photoceuticals: a mechanistic pharmacological approach to photobiomodulation dosimetery (Conference Presentation)," Proc. SPIE 10477, Mechanisms of Photobiomodulation Therapy XIII, 104770I (Presented at SPIE BiOS: January 27, 2018; Published: 14 March 2018); https://doi.org/10.1117/12.2294563.5751476568001.
Conference Presentations are recordings of oral presentations given at SPIE conferences and published as part of the conference proceedings. They include the speaker's narration along with a video recording of the presentation slides and animations. Many conference presentations also include full-text papers. Search and browse our growing collection of more than 12,000 conference presentations, including many plenary and keynote presentations.
Monte Carlo based light propagation models to improve efficacy of biophotonics based therapeutics of hollow organs and solid tumours including photodynamic therapy and photobiomodulation (Conference Presentation)