UVA and Visible Light-induced Reactive Oxygen Species (ROS) Formation in Cell Cultures: An Electron Paramagnetic Resonance (EPR) study

摘要

The stimulatory effect of low energy light (LEL) has been attributed to irradiation-induced ROS formation. In the present study we demonstrate that irradiating various cell cultures such as fibroblasts, cardiac and sperm cells with UVA or various light sources in the visible range results in singlet oxygen and OH radical formation. These radicals were monitored by using the EPR technique. We believe that the light induced ROS could mediate previously documented effects of LEL on these cells.