The study led by principle investigator Jiyoun Kim, PhD, professor of pathology, was published in the December issue of The American Journal of Pathology and was selected by the editorial board as the only article for an in-depth discussion in the journal's commentary section.
Numerous exposures such as viral infections, indoor as well as outdoor allergens and ambient pollution contribute to the development of asthma in childhood and the persistence of asthma in adulthood. Environmental influences weigh heavily on early lung growth, particularly traffic-related pollution. Children develop asthma and related pulmonary infections at an increased rate when exposed to these pollutants.
Exposure to both HDE and DEP demonstrated increased mucus production and higher airway resistance compared to exposure to only HDE. Pulmonary inflammation was measured by oxidative stress, respiratory physiological features, inflammatory cell recruitment and local CXC chemokine production, or soluble mediators of inflammation.
"The highlight of our study is that you can remove some of the allergen exposure by cleaning, but DEP's are especially hard to avoid in urban environments," explained Kim.
According to Kim, this research also shows a direct link between air pollution and exacerbation of pre-existing pulmonary diseases, like asthma. "We haven't reached a medicinal solution yet, but this study reveals that there could be a tangible therapeutic target and that anti-oxidative treatment could be beneficial to asthmatic patients, especially those with increased exposure to air pollutants."
Funding for this study was provided by the National Institutes of Health.
About Boston University School of Medicine
Originally established in 1848 as the New England Female Medical College, and incorporated into Boston University in 1873, Boston University School of Medicine today is a leading academic medical center with an enrollment of more than 700 medical students and more than 800 masters and PhD students. Its 1,246 full and part-time faculty members generated more than $335 million in funding in the 2009-2010 academic year for research in amyloidosis, arthritis, cardiovascular disease, cancer, infectious disease, pulmonary disease and dermatology among others. The School is affiliated with Boston Medical Center, its principal teaching hospital, the Boston and Bedford Veterans Administration Medical Centers and 16 other regional hospitals as well as the Boston HealthNet.
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