Nanopollutants change blood vessel reactivity

Nanopollutants change blood vessel reactivity

Tiny particles alter normal vessel function in animalsĀ 

By Janet Raloff, 17:44 PM March 19, 2012

SAN FRANCISCO — Exposure to nano-sized particles can impair the responsiveness of very tiny blood vessels, new animal studies show.

Vessels called arterioles don’t dilate or constrict appropriately after recent nanoparticle exposure. The changes are small “but equate to a level of impairment that would preclude affected tissues from functioning normally,” says microvascular physiologist Timothy Nurkiewicz of West Virginia University in Morgantown.

His team described new experiments March 1...

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