Electronic device generated light increases reactive oxygen species in human fibroblasts

Area of Science:

• Dermatology and photobiology.
• Cellular and molecular biology.

Background:

• Skin is continuously exposed to solar radiation and electronic device generated light (EDGL).
• While the effects of UV radiation on skin are known, the impact of EDGL remains largely uncharacterized.
• EDGL encompasses UV, visible, and infrared light emitted by consumer electronics.

Purpose of the Study:

• To quantify wavelength-specific irradiance from common electronic devices.
• To investigate the effects of white EDGL on human fibroblasts.
• To determine changes in reactive oxygen species (ROS) generation, apoptosis, and necrosis.

Main Methods:

• Measured irradiance from electronic devices at recommended distances and 1 cm.
• Irradiated AG13145 fibroblasts with white EDGL for 1 hour at 1 cm.
• Assessed ROS generation, apoptosis, and necrosis post-irradiation.

Main Results:

• Significant increases in ROS generation (81-93%) observed after 1-hour EDGL exposure.
• No significant changes in apoptosis were detected.
• Necrosis remained below 2% across all groups.

Conclusions:

• Short-term EDGL exposure elevates ROS generation in skin cells.
• Long-term consequences of repeated EDGL exposure require further investigation.
• Increased research and public interest in visible EDGL's effects on skin are anticipated.