Cat's eye view of DNA sheds light on human disease
November 1, 2007 09:58 AM - Maggie Fox -Reuters
The first full genetic map of a cat -- a domestic pedigreed Abyssinian -- is already shedding light on a common cause of blindness in humans and may offer insights into AIDS and other diseases, researchers reported on Wednesday. And the cat genome shows some surprising qualities that cats and humans appear to have uniquely in common, the researchers report in the journal Genome Research.
Galaxy Warriors toys sold at Family Dollar recalled
October 31, 2007 03:27 PM - Reuters
WASHINGTON (Reuters) - About 380,000 "Galaxy Warriors" toy figures sold by Family Dollar Stores Inc are being recalled because the surface paints contain excessive levels of lead, the U.S. Consumer Product Safety Commission said on Wednesday. The Chinese-made toys, space figures about 4.5 inches tall that come accessories, were sold at Family Dollar stores throughout the United States from January 2006 through October 2007 and distributed by Henry Gordy International Inc, the agency said.
Google phone could be tough sell to U.S. carriers
October 31, 2007 01:22 PM - Sinead Carew - Analysis
NEW YORK (Reuters) - Google Inc, which is used to dominating the Web search advertising business, may find negotiating its way into the cell phone market a tougher task. Dealing with America's largest mobile companies, which keep control of devices and features, could force the Web search leader to make concessions that cut into future revenue from wireless, an area Google has long said would be key to growth. So far no U.S. carrier has confirmed working with Google on a new mobile platform. No. 2 U.S. carrier Verizon Wireless is in active talks about putting Google applications on phones it offers, people familiar with the matter told Reuters.
Want to Stop Superbugs? Clean up Hospitals: Study
October 31, 2007 01:20 AM - Maggie Fox, Health and Science Editor
WASHINGTON (Reuters) - Hospitals seeking to keep patients from picking up infections should focus as much on cleaning up invisible germs as on removing the visible dirt, a British doctor argued on Tuesday.
Clean hands can only go so far in protecting patients from infection if doorknobs, bed rails and even sheets are covered with bacteria and viruses, Dr. Stephanie Dancer of South General Hospital in Glasgow writes in the journal Lancet Infectious Diseases.
But other infection experts differed on whether clean equipment and telephones affect a patient's biggest risk of acquiring a "superbug" such as methicillin resistant Staphylococcus aureus, or MRSA.
Solar panel on space station rips while opening
October 30, 2007 02:18 PM - Jeff Franks -Reuters
A solar power panel ripped as it was being unfurled from a newly reinstalled girder on the International Space Station on Tuesday, forcing NASA to halt the operation and throwing expansion plans into doubt.
Hubble sees the graceful dance of 2 interacting galaxies
October 30, 2007 10:19 AM - ESA/Hubble Information Centre
A pair of galaxies, known collectively as Arp 87, is one of hundreds of interacting and merging galaxies known in our nearby Universe. Arp 87 was originally discovered and catalogued by astronomer Halton Arp in the 1970s. Arp’s Atlas of Peculiar Galaxies is a compilation of astronomical photographs using the Palomar 200-inch Hale and the 48-inch Samuel Oschin telescopes.
Elevated nitric oxide in blood is key to high altitude function for Tibetans
October 30, 2007 10:12 AM - Case Western Reserve University
How can some people live at high altitudes and thrive while others struggle to obtain enough oxygen to function?
The answer for Tibetans who live at altitudes around 14,000 feet is increased nitric oxide (NO) levels. High levels of NO circulate in various forms in the blood and produce the physiological mechanisms that cause the increased blood flow that maintains oxygen delivery despite hypoxia—low levels of oxygen in the ambient air and the bloodstream. Researchers from Case Western Reserve University and the Cleveland Clinic report that Tibetans have 10 times more NO and have more than double the forearm blood flow of low-altitude dwellers. The findings from a comparison of NO levels in the high and low altitude dwellers are reported in the article, “Higher Blood Flow and Circulating NO Products Offset High-altitude Hypoxia among Tibetans,” in the current Proceedings of the National Academy of Sciences (PNAS).
Brain scans of obese show hunger hormone at work
October 29, 2007 11:19 PM - Maggie Fox, Health and Science Editor, Reuters
WASHINGTON (Reuters) - Giving the body's natural appetite suppressant to morbidly obese volunteers de-activated their brain's response to tasty food -- and the new brain activity lasted for as long as the hormone was delivered, U.S. researchers reported on Monday.
They said their imaging tests show some of the brain circuits activated by leptin, a hormone that helps control appetite, and may lead to new and better treatments for obesity, the researchers wrote in their report, published in the Proceedings of the National Academy of Sciences.
"While they were off leptin they got really hungry when they saw pictures of high-calorie food, and that was associated with high activation in a part of the brain that is related to food craving," said Edythe London of the University of California Los Angeles, who led the study.
UV light may offer "double whammy" for cancer
October 29, 2007 11:14 PM - Michael Kahn, reuters
LONDON (Reuters) - Using ultraviolet light may one day offer a "double whammy" to kill cancer cells by better focusing antibody-based drugs and triggering the body's own defenses to eliminate tumors, researchers said on Tuesday.
In two studies with mice, a British team cloaked antibodies -- the immune system proteins that tag germs and cancer cells for elimination -- with an organic oil that blocked them from reacting until illuminated with ultraviolet light.
The researchers used engineered immune system proteins called monoclonal antibodies. They are made to home in on proteins known to be overactive in tumor cells.
Honduras finds radioactive material in container
October 29, 2007 11:11 PM -
TEGUCIGALPA (Reuters) - Honduras authorities have found strong traces of radioactive material in a Hong Kong-bound shipping container carrying steel debris from an Atlantic coast port, officials said on Monday.
During a security scan on Sunday, officials detected high readings of radioactivity emanating from the container at the Puerto Cortes port, 115 miles north of Honduras' capital, Tegucigalpa.
"We immediately declared an alert and have seized the container for inspection," Edwin Araque, the manager of Honduras' port authority, said on Monday.