New mechanism for nano damage?

Nanoparticles can damage DNA even in cells that are not directly exposed to them, according to an in vitro study published online today (November 5) in Nature Nanotechnology -- raising further questions about the safety of nanomaterials used in clinical therapies. Image: Wikimedia commons, Jerome Walker, Dennis Myts"DNA damage due to nanoparticles has been described for many types of nanoparticles, but that's done in a primary or direct sense," said linkurl:Andre Nel,;http://www.cnsi.ucla.edu/i

Jef Akst
Jef Akst

Jef Akst is managing editor of The Scientist, where she started as an intern in 2009 after receiving a master’s degree from Indiana University in April 2009 studying the mating behavior of seahorses.

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Nov 4, 2009
Nanoparticles can damage DNA even in cells that are not directly exposed to them, according to an in vitro study published online today (November 5) in Nature Nanotechnology -- raising further questions about the safety of nanomaterials used in clinical therapies.
Image: Wikimedia commons,
Jerome Walker, Dennis Myts
"DNA damage due to nanoparticles has been described for many types of nanoparticles, but that's done in a primary or direct sense," said linkurl:Andre Nel,;http://www.cnsi.ucla.edu/institution/personnel?personnel_id=8739 chief of NanoMedicine at the University of California, Los Angeles, who was not involved in the study. "Indirect DNA damage to hazardous nanoparticles is not something that I have seen described before." Scientists are using nanotechnology to develop delivery systems for drugs and imaging agents, but some studies have suggested these particles may be toxic. Researchers have linked inhalation of nanoparticles or nanotubes to cardiorespiratory disease, for example. Additionally, nanoparticle debris from implants, such as cobalt-chromium (CoCr)...




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