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Mercury contamination of fish warrants worldwide public warning

...abitants of mining regions. These activities alone contribute more than 10 percent of the mercury in Earth's atmosphere attributable to human activities today. Little is known about the behavior of mercury in marine ecosystems and methylmercury in marine fish, the ingestion of which is the primary way most pe...

Stress may help cancer cells resist treatment, research shows

...eath. "These data imply that emotional stress may contribute to the development of cancer and may also reduce the effectiveness of cancer treatments," said George Kulik, D.V.M., Ph.D., an assistant professor of cancer biology and senior researcher on the project. The study results are reported on-line in th...

Scientists uncover link between ocean's chemical processes and microscopic floating plants

...on in a higher carbon dioxide environment may help contribute to self-regulation of Earth's climate." "The bottom line is that carbon dioxide-loading of the atmosphere could lead to environmental changes we have not even begun to think about, effects beyond acidification of surface seawater and greenhouse war...

Male reindeer inflate a large air sac in the neck region to emit their hoarse rutting calls

...sac, influencing vocal sound and neck contour, may contribute to his sexual prowess and reproductive success. The results of this research have recently been published in Journal of Anatomy. As in other species with harem-like mating systems, the voice organs of reindeer differ according to gender. Adult males...

Genes set scene for metastasis

...ant organs. A number of genes are already known to contribute to the spread of breast cancer cells to the lungs. Using genetic and pharmacological approaches, Joan Massagué, PhD, Chair of MSKCC's Cancer Biology and Genetics Program and a Howard Hughes Medical Institute Investigator, and colleagues showed ho...

When your brain talks, your muscles don't always listen

...ing precision tasks, and slowed physical responses contribute to more falls as people grow older," Knight said. Knight and co-author Gary Kamen, who directs the Exercise Neuroscience Laboratory at the University of Massachusetts, recently published the results of a study on motor-unit firing rates in the Jou...

Stem cells act through multiple mechanisms to benefit mice with neurodegenerative disease

...ses called "neurogenetic diseases". These findings contribute fundamental basic knowledge about stem cell biology that will help inform medical scientists in their quest for understanding diseases such as Parkinson's, Alzheimer's, ALS, and a host of other neurological diseases. "Dr. Snyder's tea...

Genetic pathways to curable and incurable forms of pancreatic cancer identified

...r spread, to other organs. These properties likely contribute to the improved survival seen with this form of the cancer, Hingorani said. Conversely, the initial lesions that lead to the more common and deadly form of pancreatic ductal adenocarcinoma, called pancreatic epithelial neoplasms, are tiny enough...

Technology reveals 'lock and key' proteins behind diseases

... from cells in our bodies but when overzealous can contribute to the drug resistance of tumours, thereby thwarting chemotherapy. __IMAGE_2 "All the cells in our bodies contain transporters that are poised in cellular membranes and act as ‘gatekeepers?to allow the entry of certain substances, like nutrients...

Microbes start immune response by sneaking inside cells

...-like receptors is moving forward rapidly and will contribute to a fuller understanding of the human immune system, say the U-M researchers. ...

Biologists develop large gene dataset for rice plant

... Agriculture, funded the research. "This work will contribute to an understanding of the role of small RNAs in gene expression not only in rice, but in all plants." ...

ESA launches new project to protect biodiversity

... areas where Earth observation (EO) technology may contribute to the conservation and monitoring activities of the different actors involved in UNCBD in Central America. ESA has identified four main users: the United Nations Educational, Scientific and Cultural Organization (UNESCO), the Secretariat of the UNCB...

Scientists find method to pick noncompetitive animals, improve production

...nces geneticist. The new method is a tool that may contribute both to animal well-being and to securing the worl... they developed to determine inherited traits that contribute to interactions among both individual animals and groups. The second paper refines the methodology a...

Researcher to study astronaut bone loss for space biology agency

...." Long concludes, "I am excited and honored to contribute to our nation's efforts to safely explore space, the moon, and Mars." ...

Stability of mRNA/DNA and DNA/DNA duplexes modulates mRNA transcription

...er, do nucleic acids possess other attributes that contribute to their biological functions? Recent work of a team led by Stoyno Stoynov, working at the Bulgarian Academy of Sciences, suggests that thermodynamic stability of DNA/DNA and RNA/DNA duplexes influences mRNA transcription. The manuscript appears in t...

20-year study shows significant rise in childhood obesity, especially among girls

...ss and less physical activity and this is bound to contribute to childhood obesity. "And as overweight and obese children become overweight and obese adults they run a much higher risk of developing cardiovascular disease and type-2 diabetes." ...

Canada's new government invests $200M in the fight against the mountain pine beetle

...obs and economic benefits for many communities and contribute to the well-being and health of Canadians and our environment. ...

Scientists find new genetic clue to cause of Alzheimer's disease

...ers suggest that faulty versions of the SORL1 gene contribute to formation of amyloid plaques, a hallmark sign of Alzheimer's in the brains of people with the disease. They identified 29 variants that mark relatively short segments of DNA where disease-causing changes could lie. The study did not, however, iden...

Global 'sunscreen' has likely thinned, report NASA scientists

...," Romanou said. "Aerosols have other effects that contribute to dimming, such as making clouds more reflective and longer-lasting. These effects were found to be almost as important as the direct effects." The combined effect of global dimming and warming may account for why one of the major impacts of a wa...

Notorious cancer gene may work by destroying messenger

...new study suggests how a notorious cancer gene may contribute to tumor growth. The insight emerged from a long... These findings provide insight into how Src might contribute to cancer development. The study by researchers with the Ohio State University Comprehensive Can...

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