Following radiation therapy, many cancer patients experience moderate to severe side effects that is a result of the death of the normal tissues such as the skin and internal organs. These side effects may limit the amount of radiation that can be delivered or cause the radiation to be prematurely stopped, decreasing the overall effectiveness of the radiation. Often times, the side effects may be severe enough that the radiation therapy is disrupted.1,2,3,4 Reducing or preventing these side effects remain an unmet clinical need.
These side effects result when biological systems are exposed to high energy levels such as those produced by radiation exposure. Free radicals (also called Reactive Oxygen Species) are produced at high levels that are then capable of destroying normal tissues. While cells release some protective molecules, the normal cells are not capable of blocking all the oxidation damage caused by the excessive amounts of free radicals, thus resulting in the death of normal tissues.
Some of the select adverse events and damage from radiation therapy experienced by cancer patients are:
BREAST - Skin Damage including Dryness, Discoloration, and Blisters (Radiodermatitis)
HEAD AND NECK - Drying of the Mouth, Loss of Saliva, Difficulty Swallowing and Other Symptoms (Xerostomia), Radiodermatitis
PROSTATE - Inflammation of Rectum, Frequent and Painful Urination, Radiodermatitis
COLORECTAL - Damage to the Bowel and Bleeding of the Rectum, Radiodermatitis
LUNG - Inflammation and Scarring of the Lungs (Radiation Pneumonitis), Radiodermatitis
Preclinical testing of BioCurity's technology, some of which is described in peer-reviewed publications, demonstrate the following:5,6
1Siegel, Rebecca, et al. “Cancer Statistics, 2016.” CA Cancer J Clin. 66 (2016): 7-30
2Ryan, Julie. “Ionizing Radiation: The Good, the Bad, and the Ugly”. J Invest Dermatol. 132 (2012): 985-993
3Bray Fleta, et al. “Acute and Chronic Cutaneous Reactions to Ionizing Radiation Therapy.” Dermatol Ther. 6 (2016): 185-206
4Radvansky, Lauren, et al. “Prevention and management of radiation-induced dermatitis, mucositis and xerostomia.” Am J Health Syst Pharm. 12 (2013): 1025-1032
5Colon, Jimmy et al. " Protection from radiation-induced pneumonitis using cerium oxide nanoparticles." Nanomedicine:5 (2009): 25-231
6Baker, Cheryl (2010) Topical Cerium Oxide Nanoparticles unpublished raw data