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Infrared light therapy relieves TLR-4 dependent hyper-inflammation of the type induced by COVID-19

Aguida et al., Communicative & Integrative Biology, doi:10.1080/19420889.2021.1965718
Sep 2021  
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Sunlight for COVID-19
32nd treatment shown to reduce risk in December 2021
 
*, now with p = 0.000052 from 5 studies.
Lower risk for mortality, hospitalization, recovery, and cases.
No treatment is 100% effective. Protocols combine treatments. * >10% efficacy, ≥3 studies.
4,800+ studies for 98 treatments. c19early.org
In vitro study of human cell cultures showing decreased inflammation and cytokine production with infrared light therapy. Cells were engineered to express components of the TLR4 inflammation pathway implicated in COVID-19 cytokine storms. Authors suggest infrared therapy could help treat COVID-19 respiratory distress by suppressing lung inflammation and cytokine production, but note that clinical trials are still needed to demonstrate effectiveness in patients.
2 preclinical studies support the efficacy of sunlight for COVID-19:
Aguida et al., 15 Sep 2021, USA, peer-reviewed, 4 authors. Contact: margaret.ahmad@sorbonne-universite.fr, nathalie.jourdan@sorbonne-universite.fr.
This PaperSunlightAll
Infrared light therapy relieves TLR-4 dependent hyper-inflammation of the type induced by COVID-19
Blanche Aguida, Marootpong Pooam, Margaret Ahmad, Nathalie Jourdan
Communicative & Integrative Biology, doi:10.1080/19420889.2021.1965718
The leading cause of mortality from COVID-19 infection is respiratory distress due to an exaggerated host immune response, resulting in hyper-inflammation and ensuing cytokine storms in the lungs. Current drug-based therapies are of limited efficacy, costly, and have potential negative side effects. By contrast, photobiomodulation therapy, which involves periodic brief exposure to red or infrared light, is a noninvasive, safe, and affordable method that is currently being used to treat a wide range of diseases with underlying inflammatory conditions. Here, we show that exposure to two 10-min, high-intensity periods per day of infrared light causes a marked reduction in the TLR-4 dependent inflammatory response pathway, which has been implicated in the onset of cytokine storms in COVID-19 patients. Infrared light exposure resulted in a significant decline in NFkB and AP1 activity as measured by the reporter gene assay; decreased expression of inflammatory marker genes IL-6, IL-8, TNF-alpha, INF-alpha, and INF-beta as determined by qPCR gene expression assay; and an 80% decline in secreted cytokine IL6 as measured by ELISA assay in cultured human cells. All of these changes occurred after only 48 hours of treatment. We suggest that an underlying cellular mechanism involving modulation of ROS may downregulate the host immune response after Infrared Light exposure, leading to decrease in inflammation. We further discuss technical considerations involving light sources and exposure conditions to put these observations into potential clinical use to treat COVID-19 induced mortality.
Author contributions BA designed the experiments, conducted research, data analysis, and wrote the manuscript. MP designed the experiments, conducted research, data analysis, and wrote the manuscript; NJ designed the experiments, analyzed data; MA designed the experiments, obtained funding, analyzed data, and wrote the paper, as well as assisted in the experimental design and analyzed the data. Disclosure statement No potential conflict of interest was reported by the author(s). Funding
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