Nanotechnology Now

Our NanoNews Digest Sponsors





Heifer International

Wikipedia Affiliate Button


DHgate

Home > News > Nanotechnology: A New Force For Human Betterment - Part II

April 5th, 2010

Nanotechnology: A New Force For Human Betterment - Part II

Abstract:
The Editor interviews John R. Bashaw , Partner in the New Haven office, William S. Rogers, Jr., Partner in the Boston office and Joseph Clark , Counsel in the Florham Park, New Jersey office of Day Pitney LLP.

Editor: Please discuss the recently published EPA Significant New Use Rule (SNUR) under the Toxic Substances Control Act for multi-walled carbon nanotubes.

Rogers: Before the EPA announcement in January, 2010 concerning the proposed SNUR, a series of studies was done beginning in the United Kingdom with a study led by Poland, et al. (2008). That study involved the injection of multi-walled nanotubes into the abdomen of mice, the mucosal lining of which is identical to the mesothelium of the pleura or chest. The injection directly into the abdomen was intended to simulate exposure of the mesothelium in the chest due to inhalation exposure. Approximately 90 days later they examined the biological changes who had taken place as a result of exposure of the abdominal mesolthelial lining to the carbon nanotubes. They reportedly found evidence of inflammation that was consistent with the type of inflammation that had traditionally been recognized in people who had inhalation exposure to asbestos fibers and who later developed mesothelioma. They did not find actual mesothelioma in the mice, but rather what were thought to be precursors to such cancers. The result of publication of these findings was an alarmist reaction that carbon nanotubes posed a danger to humans analogous to that of asbestos fibers. This became headline news.

The problem with the study was that the mice were exposed to massive doses of nanotubes by injection, which is not a natural or likely cause of human exposure. The test methodologies were a poor analog for what likely human exposure would be in any setting. Many commentators criticized the study's findings and suggested that its conclusions about a potential relationship between carbon nanotubes and asbestos fibers was flawed because it rested largely on their shape similarity (long and thin); however, for the last two years there has been talk in the popular media about whether the risks associated with all nanomaterials are akin to those associated with asbestos fibers. The only similarities between carbon nanotubes and asbestos fibers is their long aspect ratio, unlike other nanomaterials. There has been more focus on carbon nanotube toxicity than on other nanomaterial substances, which has percolated up to the EPA. EPA has now decided to treat carbon nanotubes separately from other nano-objects.

Source:
metrocorpcounsel.com

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

QEOS and GLOBALFOUNDRIES to Offer Industry’s First CMOS Platform for MillimeterWave Markets: GLOBALSOLUTIONSSM Partnership will enable next-generation wireless technologies for applications in IoT, 5G and automotive September 3rd, 2015

GLOBALFOUNDRIES and Catena Partner to Provide Next-Generation RF Connectivity Solutions for Growing Wireless Markets: Catena Wi-Fi and Bluetooth RF technologies available on GLOBALFOUNDRIES 28nm Super Low Power Process technology September 3rd, 2015

Making nanowires from protein and DNA September 3rd, 2015

Making fuel from light: Argonne research sheds light on photosynthesis and creation of solar fuel September 3rd, 2015

Govt.-Legislation/Regulation/Funding/Policy

Making nanowires from protein and DNA September 3rd, 2015

Making fuel from light: Argonne research sheds light on photosynthesis and creation of solar fuel September 3rd, 2015

Reversible Writing with Light: Self-assembling nanoparticles take their cues from their surroundings September 3rd, 2015

Silk bio-ink could help advance tissue engineering with 3-D printers September 2nd, 2015

Nanotubes/Buckyballs/Fullerenes

For 2-D boron, it's all about that base: Rice University theorists show flat boron form would depend on metal substrates September 2nd, 2015

$200K Awarded to Develop In Vitro Lung Test for Toxicity of Inhaled Nanomaterials: In Vitro Lung Test Designed to Protect Human Health and Replace Animal Testing September 1st, 2015

Developing Component Scale Composites Using Nanocarbons August 26th, 2015

Southampton scientists find new way to detect ortho-para conversion in water August 25th, 2015

Announcements

QEOS and GLOBALFOUNDRIES to Offer Industry’s First CMOS Platform for MillimeterWave Markets: GLOBALSOLUTIONSSM Partnership will enable next-generation wireless technologies for applications in IoT, 5G and automotive September 3rd, 2015

GLOBALFOUNDRIES and Catena Partner to Provide Next-Generation RF Connectivity Solutions for Growing Wireless Markets: Catena Wi-Fi and Bluetooth RF technologies available on GLOBALFOUNDRIES 28nm Super Low Power Process technology September 3rd, 2015

Making nanowires from protein and DNA September 3rd, 2015

Making fuel from light: Argonne research sheds light on photosynthesis and creation of solar fuel September 3rd, 2015

Interviews/Book Reviews/Essays/Reports/Podcasts/Journals/White papers

Making nanowires from protein and DNA September 3rd, 2015

Making fuel from light: Argonne research sheds light on photosynthesis and creation of solar fuel September 3rd, 2015

Reversible Writing with Light: Self-assembling nanoparticles take their cues from their surroundings September 3rd, 2015

Silk bio-ink could help advance tissue engineering with 3-D printers September 2nd, 2015

Safety-Nanoparticles/Risk management

Sustainable nanotechnology center September 1st, 2015

$200K Awarded to Develop In Vitro Lung Test for Toxicity of Inhaled Nanomaterials: In Vitro Lung Test Designed to Protect Human Health and Replace Animal Testing September 1st, 2015

Warning to DIY enthusiasts & construction workers as dangerous dust emissions August 19th, 2015

Bionic liver micro-organs explain off-target toxicity of acetaminophen (Tylenol): Israeli-German partnership aims to replace animal experiments with advanced liver-on-chip devices August 17th, 2015

NanoNews-Digest
The latest news from around the world, FREE



  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project







Car Brands
Buy website traffic