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News | Archive (14 March 2011) [Page 2]
The impact of sex selection and abortion in China, India and South Korea
— 20:21 GMT | HealthIn the next 20 years in large parts of China and India, there will be a 10% to 20% excess of young men because of sex selection and this imbalance will have societal repercussions, states an analysis in CMAJ (Canadian Medical Association Journal)…
WHOI experts stress lessons from Japan earthquake
— 20:18 GMT | Geology and palaeontologyWhile Japan's 8.9-magnitude earthquake and accompanying tsunami represent a devastating natural disaster for the country's residents, scientists should also seize upon the massive temblor as an important learning tool for future quakes around the world, including the Pacific Northwest coast of the United States, according to experts from the Woods Hole Oceanographic Institution (WHOI)…
Neuro signals study gives new insight into brain disorders
— 20:15 GMT | HealthResearch into how the brain transmits messages to other parts of the body could improve understanding of disorders such as epilepsy, dementia, multiple sclerosis and stroke…
Research may lead to new and improved vaccines
— 20:12 GMT | HealthAlum is an adjuvant (immune booster) used in many common vaccines, and Canadian researchers have now discovered how it works. The research by scientists from the University of Calgary's Faculty of Medicine is published in the March 13 online edition of Nature Medicine. The new findings will help the medical community produce more effective vaccines and may open the doors for creating new vaccines for diseases such as HIV or tuberculosis…
Tumour metastasis with a twist
— 20:09 GMT | HealthIn the early stages of human embryogenesis, a transcription factor called Twist1 plays a key regulatory role in how the embryo assumes form and function. Much later in life, however, researchers at the University of California, San Diego School of Medicine, say Twist1 can re-emerge, taking a darker and more deadly turn…
Nanorods developed in UC Riverside lab could greatly improve visual display of information
— 20:06 GMT | TechnologyChemists at the University of California, Riverside have developed tiny, nanoscale-size rods of iron oxide particles in the lab that respond to an external magnetic field in a way that could dramatically improve how visual information is displayed in the future…
Key mutations act cooperatively to fuel aggressive brain tumour
— 20:03 GMT | HealthMutations in three pathways important for suppressing tumours cooperate to launch glioblastoma, an aggressive brain tumour that strikes children and adults. But new research from St. Jude Children's Research Hospital scientists shows those changes alone are not sufficient to cause cancer. Tumour formation requires additional mutations, some affecting different points in the same disrupted regulatory pathways…
Osteoblasts are bone idle without Frizzled-9
— 20:00 GMT | HealthNew research shows that the Wnt receptor Frizzled-9 (Fzd9) promotes bone formation, providing a potential new target for the treatment of osteoporosis. The study appears online on March 14 in The Journal of Cell Biology (www.jcb.org)…
Orchid wears the scent of death
— 19:57 GMT | BiologySex and violence, or at least death, are the key to reproduction for the orchid Satyrium pumilum. Research led by Timotheues van der Niet at the University of KwaZulu-Natal shows that the orchid lures flies into its flowers by mimicking the smell of rotting flesh. A new study comparing the scent of the orchids with that of roadkill is to be published in the Annals of Botany…
Study helps explain how pathogenic E. coli bacterium causes illness
— 19:54 GMT | HealthScientists at the National Institute of Allergy and Infectious Diseases (NIAID), part of the National Institutes of Health, have shown how the O157:H7 strain of Escherichia coli causes infection and thrives by manipulating the host immune response. The bacterium secretes a protein called NleH1 that directs the host immune enzyme IKK-beta to alter specific immune responses. This process not only helps the bacterium evade elimination by the immune system, it also works to prolong the survival of the infected host, enabling the bacterium to persist and ultimately spread to unaffected individuals. This finely balanced mechanism, observed in both laboratory and animal models, could be relevant to other pathogens involved in foodborne diseases…
An eagle of cosmic proportions
Genome of parasitic flatworm that causes schistosomiasis decoded