Environmental Air Pollutants Affecting Skin Functions with Systemic Implications.

Area of Science:

• Environmental Science
• Dermatology
• Toxicology

Background:

• Global air pollution is a significant environmental risk factor impacting human health.
• The skin is constantly exposed to air pollutants, leading to physiological changes and damage.
• Pollutants can interact with ultraviolet radiation (UVR), exacerbating harmful effects and impairing vitamin D synthesis.

Purpose of the Study:

• To investigate the multifaceted impacts of air pollution on skin health.
• To explore the role of the aryl hydrocarbon receptor (AhR) in mediating skin responses to pollutants.
• To identify potential therapeutic targets for mitigating pollution-induced skin damage and diseases.

Main Methods:

• Review of existing literature on air pollution and skin health.
• Analysis of the mechanisms by which pollutants affect skin physiology and microbiota.
• Examination of the role of the aryl hydrocarbon receptor (AhR) and Nrf2 pathways.

Main Results:

• Air pollutants, including those activated by UVR, cause oxidative stress and inflammation in the skin.
• Pollution compromises skin integrity, affects vitamin D synthesis, and can alter skin microbiota.
• The aryl hydrocarbon receptor (AhR) acts as a key sensor for pollutants and plays a critical role in skin responses.

Conclusions:

• Air pollution poses a substantial threat to skin health worldwide.
• Targeting the AhR/Nrf2 pathway presents a promising therapeutic strategy for managing pollution-related skin diseases.
• The AhR signaling pathway is crucial in regulating skin phenotype in response to environmental factors.