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Rodent study finds artificial butter chemical harmful to lungs
Date:3/13/2008

ncentrations from penetrating deeper in the lung to the bronchioles or tiny airways where obstruction occurs in humans.

When the mice were exposed to high concentrations of diacetyl using a method that bypasses the nose, the researchers found lesions partially obstructing the small airways. More studies are under way to determine if these lesions progress to OB in mice.

The National Toxicology Program, headquartered at the NIEHS, plans to do a larger set of studies to provide inhalation toxicity data on artificial butter flavoring and the two major components, diacetyl and another compound called acetoin. The NTP studies will help pinpoint more definitively the toxic components of artificial butter flavoring and potentially help identify biomarkers for early detection. The NTP data will then be shared with public health and regulatory agencies so they can set safe exposure levels for these compounds and develop guidance to protect the health of workers in occupations where these chemicals are used.


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Contact: Robin Mackar
rmackar@niehs.nih.gov
919-541-0073
NIH/National Institute of Environmental Health Sciences
Source:Eurekalert

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