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Science News Archive November 2011 - Page 27


Page 27 of 28

Genome-scale network of rice genes to speed the development of biofuel crops

Researchers have created a genome-scale model called RiceNet to predict the functions of genes and gene networks in rice, accelerating the development of biofuel crops. The model, which encompasses nearly half of all rice genes, was developed using publicly available data sets and validated through experiments.

SourceDOE/Lawrence Berkeley National Laboratory·JournalProceedings of the National Academy of Sciences·DateNov 2, 2011

Geologists find ponds not the cause of arsenic poisoning in India's groundwater

A recent study published in Geophysical Research Letters found that perennial ponds are not a significant contributor to high levels of arsenic in India's groundwater. Instead, the researchers propose that organic matter contained in Holocene sedimentary basins is likely the source of the toxin, taking thousands of years to reach the a...

SourceKansas State University·JournalGeophysical Research Letters·DateNov 2, 2011

Researchers roll out a new form of lighting

Researchers have created thin, flexible sheets of organic light-emitting diodes (OLEDs) using a low-cost 'roll-to-roll' printing process. This technology could revolutionize lighting by being used for everything from home and office tiles to windows that simulate sunrise and sunset.

SourceIOP Publishing·JournalPhysics World·DateNov 1, 2011

Vitamin D study suggests no mortality benefit for older women

A new study led by Brown University found that vitamin D does not confer benefits against mortality in postmenopausal women, contrary to previous beliefs. The study controlled for key health factors like abdominal obesity and found no association between high or low levels of vitamin D and reduced risk of death.

SourceBrown University·JournalAmerican Journal of Clinical Nutrition·DateNov 1, 2011

Team discovers how a cancer-causing bacterium spurs cell death

A study published in Proceedings of the National Academy of Sciences reveals how Helicobacter pylori bacteria disrupts mitochondrial function to induce cell death. The researchers found that the bacterial toxin VacA recruits a host protein to activate apoptosis, a process linked to cancer development.

SourceUniversity of Illinois at Urbana-Champaign, News Bureau·JournalProceedings of the National Academy of Sciences·DateNov 1, 2011

Starving prostate cancer

Researchers at Centenary Institute found prostate cancer cells have more pumps than normal, allowing them to take in leucine and outgrow normal cells. Disrupting these pumps slowed cancer growth by as much as 50%, offering hope for a treatment that slows tumor growth without surgical removal.

SourceCentenary Institute·JournalCancer Research·DateNov 1, 2011

Physical activity reduces the effect of the 'obesity gene'

A new study published in PLOS Medicine found that physical activity can substantially reduce the effect of the FTO gene on obesity risk. The research, which analyzed data from over 218,000 adults, showed that individuals who were physically active had a nearly 30% weaker association with the FTO gene compared to those who were inactive.

SourcePLOS·JournalPLOS Medicine·DateNov 1, 2011

JCI online early table of contents: November 1, 2011

Scientists discover a possible therapy for hereditary sensory and autonomic neuropathy type 1, reversing toxic molecule accumulation in mice. Additionally, researchers design minihepcidins to reduce iron overload by mimicking the natural protein's ability to lower blood iron levels.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateNov 1, 2011

Cellular repair could reduce premature aging

A study led by Durham University has identified a potential drug therapy for premature ageing diseases, including Hutchinson Gilford Progeria Syndrome. The treatment, N-acetyl cysteine (NAC), controlled oxidative stress and DNA damage in cells, suggesting a possible model for understanding processes that cause us to age.

SourceDurham University·JournalHuman Molecular Genetics·DateNov 1, 2011

Switching senses

Researchers at Caltech found that leeches rely on two distinct methods to detect prey: hairs detecting water disturbances and simple eyes picking up passing shadows. In adulthood, the preference shifts to using water disturbances alone.

SourceCalifornia Institute of Technology·JournalJournal of Experimental Biology·DateNov 1, 2011

Crowdsourcing nutrition in a snap

PlateMate's calorie estimates have proved accurate like those of trained nutritionists and more so than users' logs. The research was presented at the 24th ACM Symposium on User Interface Software and Technology, a leading conference on human-computer interaction.

Digging up clues: Research on buried blow flies to help crime scene investigators

New research from NC State University sheds light on how blow flies survive when buried underground during their development. The study found that blow flies can survive burial and provides additional information for murder investigations, helping forensic entomologists determine body burial times and potential relocations.

SourceNorth Carolina State University·JournalForensic Science International·DateNov 1, 2011