Cutaneous responses to environmental stressors

Area of Science:

• Environmental Science
• Dermatology
• Toxicology

Background:

• The skin serves as the primary interface between the body and the environment.
• It acts as a crucial biological barrier against diverse chemical and physical environmental pollutants.
• Constant exposure to oxidants, including UV radiation and pollutants like CS, O₃, heavy metals, and diesel exhaust, affects skin health.

Purpose of the Study:

• To review the effects of environmental pollutants on cutaneous tissues.
• To elucidate the mechanisms of action of cigarette smoke (CS), ozone (O₃), and UV radiation on the skin.
• To highlight the skin's role as a first line of defense.

Main Methods:

• Literature review of studies on environmental pollutants and skin.
• Analysis of the biochemical pathways involved in pollutant-induced skin damage.
• Focus on the impact of CS, O₃, and UV radiation.

Main Results:

• Environmental pro-oxidant agents induce reactive oxygen species (ROS) formation.
• ROS and other bioactive molecules generated by pollutants can damage skin cells.
• CS, O₃, and UV radiation have distinct and cumulative effects on skin.

Conclusions:

• The skin's barrier function is constantly challenged by environmental pro-oxidants.
• Understanding the mechanisms of damage from CS, O₃, and UV is crucial for dermatological health.
• Further research is needed to develop protective strategies against environmental skin damage.