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Year End Nanotechnology Developments

By William J. Walsh, Of Counsel, Pepper Hamilton LLP The Environmental Protection Agency's Inspector General (IG) issued a report, EPA Needs to Manage Nanomaterial Risks More Effectively , December 29, 2011 critiquing EPA's regulation of nanomaterials (i.e., particles or fibers with a diameter...

Nanoparticles Impair Blood Vessel Function

Prior posts have noted the wide range of materials and consumer products in which nanoparticles are used, and also that nanoparticles can cross the so-called blood-brain barrier. New research, using animal models, suggests that such materials may impair blood vessel function. Researchers exposed rats...

Nanopollutants Harm the Functioning of Arterioles

Prior posts have noted the adverse health impact of nanoparticles, and that they can cross the so-called blood-brain barrier. Now, animal tests suggest that they affect the function of arterioles, the vessels that connect arteries to capillaries (see Wikipedia- Arteriole ). Researchers exposed rats...