Thursday, August 6, 2015

Exposure of New Born Babies to Traffic-Related Air Pollution

Perinatal Exposure to Traffic-Related Air Pollution and Atopy at 1 Year of Age in a Multi-Center Canadian Birth Cohort Study (32 pge pdf, Hind Sbihi, Ryan W. Allen, Allan Becker, Jeffrey R. Brook, Piush Mandhane, James A. Scott, Malcolm R. Sears, Padmaja Subbarao, Tim K. Takaro, Stuart E. Turvey, and Michael Brauer, Environmental Health Perspectives, Mar. 31, 2015) 

Today we review research into the impact of short and longer term exposure to traffic related pollution on one year old babies. Results indicate a greater risk of allergies, especially for those who did not attend daycares with older children who seem to offer protection.
Mast cells are involved in allergy. Allergies ... 
Mast cells are involved in allergy. Allergies such as pollen allergy are related to the antibody known as IgE. Like other antibodies, each IgE antibody is specific; one acts against oak pollen, another against ragweed. (Photo credit: Wikipedia)[/caption]  

Key Quotes: 

"With the increasing rates of allergies amongst children in Canada and elsewhere, we were interested in determining if air pollution from traffic might be partially responsible," 

 "Understanding which environmental exposures in early life affect the development of allergies can help tailor preventative measures for children," 

"We also found that children who attended daycare or with older siblings in the household were less likely to develop allergic sensitization, suggesting that exposure to other children can be protective." 

“exposure to NO2 during the first year of life, but not during pregnancy, was positively associated with atopy at age one year."

“Children at one year of age developed more sensitization to food (12.5%) than inhalant allergens” 

“TRAP exposure after birth increased the risk for development of atopy to any allergens…“This association was stronger among children not attending daycare … compared to daycare attendees”

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