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My Profile Top News Reuters top ten news stories delivered to your inbox each day. Subscribe You are here: Home > News > Technology > Article Home Business & Finance News U.S. Politics International Technology Internet Entertainment Sports Lifestyle Oddly Enough Health Science Special Coverage Video Pictures Your View The Great Debate Blogs Weather Reader Feedback Do More With Reuters RSS Widgets Mobile Podcasts Newsletters Your View Make Reuters My Homepage Partner Services CareerBuilder Affiliate Network Professional Products Support (Customer Zone) Reuters Media Financial Products About Thomson Reuters Deaths, lung damage linked to nanoparticles in China Wed Aug 19, 2009 4:27pm EDT Email | Print | Share | Reprints | Single Page [-] Text [+] By Tan Ee Lyn HONG KONG (Reuters) - Seven young Chinese women suffered permanent lung damage and two of them died after working for months without proper protection in a paint factory using nanoparticles, Chinese researchers reported on Wednesday. They said the study is the first to document health effects of nanotechnology in humans, although animal studies in the past have shown nanoparticles could damage the lungs of rats. "These cases arouse concern that long term exposure to nanoparticles without protective measures may be related to serious damage to human lungs," Yuguo Song from the occupational disease and clinical toxicology department at Chaoyang Hospital in Beijing wrote in the European Respiratory Journal. But a U.S. government expert said the study was more a demonstration of industrial hazards than any evidence that nanoparticles pose more of a risk than other chemicals. Nanotechnology is an important industry. One nanometer is one-billionth of a meter (yard) and nanoparticles measure between 1 to 100 nanometers. It is used in products like sporting goods, tires, electronics, cosmetics and surface coatings and has a projected annual market of around $1 trillion by 2015. "Their tiny diameter means that they can penetrate the body's natural barriers, particularly through contact with damaged skin or by inhalation or ingestion," Song and colleagues wrote. They said the seven women had worked for between five to 13 months in a factory spraying paint on polystyrene boards before they developed breathing difficulties and rashes on their faces and arms. The women breathed in fumes and smoke that contained nanoparticles while working in the factory, Song said. PARTICLES AND FLUID According to the paper, doctors found the women had excess fluids in the cavities surrounding their lungs and hearts, conditions that impair breathing and heart function. Their lung tissues and fluids contained nanoparticles about 30 nanometers in diameter -- matching particles that health protection officials later found in materials used in the factory where the women worked. Two of the women died within two years of working in the factory. The condition of the other five women has not improved even though they are no longer handling such materials. It is impossible to remove nanoparticles once they penetrate lung cells, wrote Song. Allen Chan, a chemical pathologist at the Chinese University of Hong Kong not connected to the study, said the findings were significant. Continued... View article on single page Share: Del.icio.us Digg Mixx Yahoo! Facebook LinkedIn Next Article: Asustek aims to ship 1 million smartphones in 2010 Also On Reuters Migrant children's risky trips to the U.S. documented in film Video Video: Investing in small business Tweeting airline rage: Loud, fast and public More Technology News Frustrated tweets new headache for airlines Label hunts hackers who stole Lewis/Timberlake song Web tools help protect human rights activists Diddy seeks new stars of Facebook generation Microsoft files to stay Word injunction More Technology News... 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