Ozone pollution as a possible trigger for multiple sclerosis in young people: the PEDIGREE study

Area of Science:

• Environmental Health
• Pediatric Neurology
• Epidemiology

Background:

• Air pollution is an established risk factor for adult multiple sclerosis (MS).
• The specific impact of air pollutants on pediatric MS (pedMS) remains less understood.
• Investigating environmental triggers is crucial for understanding MS etiology.

Purpose of the Study:

• To examine the association between exposure to specific air pollutants and the risk of developing pediatric MS (pedMS).
• To analyze air pollutant data in relation to the timing of MS onset in a pediatric cohort.
• To identify potential environmental contributors to childhood MS.

Main Methods:

• The study utilized a multicenter case-control design (PEDIGREE study) in Italy.
• Environmental and perinatal exposure data were collected via the PEQ-IT questionnaire.
• Air pollution levels (PM2.5, PM10, O3, NO2, SO2, CO) were obtained from the European Monitoring and Evaluation Program database for the three years preceding MS onset.

Main Results:

• A statistically significant association was found between higher ozone (O3) exposure and increased pedMS risk.
• This association persisted across the first, second, and third years prior to MS onset.
• Each unit increase in O3 exposure correlated with approximately a 10% rise in pedMS risk, even after adjusting for confounders.

Conclusions:

• Ozone (O3) exposure emerges as a significant factor potentially contributing to the development of pediatric MS.
• The findings suggest that ozone may promote MS development through mechanisms involving inflammation and oxidative stress.
• Further research into air pollution's role in pediatric MS is warranted.