Latest Nanotoxicology Stories

2008-12-18 09:58:33

University of Pittsburgh researchers have developed the first natural, nontoxic method for biodegrading carbon nanotubes, a finding that could help diminish the environmental and health concerns that mar the otherwise bright prospects of the super-strong materials commonly used in products, from electronics to plastics.A Pitt research team has found that carbon nanotubes deteriorate when exposed to the natural enzyme horseradish peroxidase (HRP), according to a report published recently in...

2008-10-09 03:00:19

By Valenzuela, Stella Cortie, Michael Gold nanoparticles can target and kill the parasite Toxoplasma gondii, opening the way for a new treatment for parasitic infections in humans. Over the ages, people worldwide have revered gold as a precious metal, with its uses being many and varied. In cultures where the Sun was worshiped as a deity, gold was viewed as its representative form on Earth. It has also commonly been used for decorative purposes in art, food and jewellery. Other uses include...

2008-09-19 00:00:16

By Allison M Heinrichs Potential ecological hazards of nanoparticles will be explored by a $14.4 million partnership between Carnegie Mellon and Duke universities, officials said today. The National Science Foundation and the U.S. Environmental Protection Agency awarded the grant to establish the Center for Environmental Implications of Nanotechnology. Nanoparticles are a million times smaller than the head of a pin and can act differently than larger objects made of the same material....

2008-07-07 15:00:20

U.S. scientists say they've discovered quantum dot nanoparticles can penetrate skin if there's an abrasion, raising new nanotechnology safety concerns. North Carolina State University researchers said the finding provides insight into potential workplace concerns for healthcare workers or individuals involved in the manufacturing of quantum dots or doing research on potential biomedical applications of the tiny nanoparticles. While the study shows that quantum dots of different sizes,...

2008-05-20 13:10:00

New study shows inhaling long, thin carbon nanotubes may result in asbestos-related diseaseA major study published today in Nature Nanotechnology suggests some forms of carbon nanotubes "“ a poster child for the "nanotechnology revolution" "“ could be as harmful as asbestos if inhaled in sufficient quantities.The study used established methods to see if specific types of nanotubes have the potential to cause mesothelioma "” a cancer of the lung lining that can take 30-40...

2007-04-20 06:00:30

By Nohynek, Gerhard J; Lademann, Jrgen; Ribaud, Christele; Roberts, Michael S Many modern cosmetic or sunscreen products contain nano-sized components. Nanoemulsions are transparent and have unique tactile and texture properties; nanocapsule, nanosome, noisome, or liposome formulations contain small vesicles (range: 50 to 5000 nm) consisting of traditional cosmetic materials that protect light- or oxygen-sensitive cosmetic ingredients. Transdermal delivery and cosmetic research suggests...

2007-03-08 09:00:57

By Rohner, Fabian; Ernst, Frank O; Arnold, Myrtha; Hilbe, Monika; Et al Abstract Particle size is a determinant of iron (Fe) absorption from poorly soluble Fe compounds. Decreasing the particle size of metallic Fe and ferric pyrophosphate added to foods increases Fe absorption. The aim of this study was to develop and characterize nanoparticles of FePO^sub 4^ and determine their bioavailability and potential toxicity in rats. Amorphous FePO^sub 4^ nanopowders with spherical structure were...

2006-10-11 12:30:00

UPTON, NY - The speed of nanoparticle assembly can be accelerated with the assistance of the molecule that carries life's genetic instructions, DNA, a team of researchers at the U.S. Department of Energy's Brookhaven National Laboratory recently found. Nanoparticles, particles with dimensions on the order of billionths of a meter, could potentially be used for more efficient energy generation and data storage, as well as improved methods for diagnosing and treating disease. Learning how to...

2006-04-10 16:00:00

By Joanne Morrison WASHINGTON -- Researchers have found a way to target cancer cells by injecting tiny particles that will attack only the diseased cells while leaving healthy cells unscathed, according to a study released on Monday. A team of researchers working at MIT and Brigham and Women's Hospital in Boston laced tiny particles with lethal doses of chemotherapy and when injected they targeted cancer cells alone. The team first conducted experiments on cells growing in laboratory dishes...

Word of the Day
  • A murmuring sound; a rushing or whistling sound, like that of the wind; a deep sigh.
  • A gentle breeze; a waft; a breath.
  • Any rumor that engages general attention.
  • A cant or whining mode of speaking, especially in preaching or praying; the chant or recitative characteristic of the old Presbyterians in Scotland.
  • To make a rushing, whistling, or sighing sound; emit a hollow murmur; murmur or sigh like the wind.
  • To breathe in or as in sleep.
  • To utter in a whining or monotonous tone.
According to the OED, from the 16th century, this word is 'almost exclusively Scots and northern dialect until adopted in general literary use in the 19th.'