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Science News Archive November 2008 - Page 6


Page 6 of 20

11,000 alien species invade Europe

A comprehensive overview of alien species in Europe reveals over 11,000 documented species, with 15% causing economic damages and 15% harming biological diversity. The DAISIE project provides a valuable tool for managing biological invasions in Europe, enabling early detection, eradication, and control methods.

Stanford: Quantum computing spins closer

Researchers at Stanford University have successfully flipped the spin of an electron and measured its new position, a key step towards faster quantum computing. The experiment achieved this in about 100 times less time than previous techniques, using ultrafast lasers.

SourceStanford University·JournalNature·DateNov 20, 2008

Common cold virus came from birds

A virus causing human-like symptoms may have emerged from a bird virus 200 years ago, according to scientists studying the common cold. Human metapneumovirus has high evolutionary rates and is closely related to Avian metapneumovirus C, suggesting a potential species barrier crossing event.

SourceMicrobiology Society·JournalJournal of Virology·DateNov 20, 2008

From genes to farmers' fields

Several new flood-tolerant rice varieties have passed tests in farmers' fields with flying colors, offering a solution to crop losses due to flooding. The varieties, which can withstand 2 weeks of submergence, are nearly identical to their susceptible counterparts but recover after severe flooding to yield well.

Underwater stock options drive top executives turnover

A study published in Personnel Psychology reveals that executives' underwater stock option portfolios are more likely to lead to voluntary turnover. Increasing the value of these portfolios can reduce the odds of turnover by substantially, suggesting that firms may need to consider alternative retention strategies.

SourceWiley·JournalPersonnel Psychology·DateNov 20, 2008

Coming soon: Improved lithium ion batteries?

A team of scientists has developed a new material for anodes that can store more lithium ions than graphite, leading to improved battery performance. The highly porous silicon structure allows for rapid charging and discharging, enabling devices like mobile phones and laptops to run for longer periods.

SourceWiley·DateNov 20, 2008

Researcher tricks immune system in diabetic mice

Researchers at Northwestern University found a way to trick the immune system of mice into believing transplanted islets are their own cells. This technique eliminated the need for immunosuppressive drugs in mice with chemically-induced diabetes after islet transplantation, showing high success rates.

SourceNorthwestern University·JournalProceedings of the National Academy of Sciences·DateNov 20, 2008

Scientists discover new species of Ebola virus

The discovery of Bundibugyo ebolavirus represents a significant addition to the puzzle of the Ebola virus genus. The new virus is genetically distinct from all other known Ebola virus species, differing by more than 30% at the genetic level. This finding has implications for the development of diagnostics, antivirals, and vaccines.

SourcePLOS·JournalPLOS Pathogens·DateNov 20, 2008

Preventing tumor cells from refueling: A new anti-cancer approach?

Researchers have identified a potential new target for anticancer therapeutics by showing that well-oxygenated tumor cells use lactate as a fuel, while hypoxic cells use glucose. Inhibiting this protein MCT1 disrupts the symbiotic relationship between the two cell types, leading to decreased tumor growth in mouse models.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateNov 20, 2008

Misreading of damaged DNA may spur tumor formation

Researchers have discovered that cells can turn on tumor-promoting growth circuits as a result of misreading damaged DNA without copying it. The results suggest that DNA damage, if it hits certain critical genes in a cell, could lead to transcriptional mutagenesis that spurs the cell to divide.

SourceEmory Health Sciences·JournalProceedings of the National Academy of Sciences·DateNov 20, 2008

Genetic Engineering & Biotechnology News reports on the trend toward predictive toxicogenomics

Biotech scientists are applying genomics technologies to toxicology research to better understand the effects of novel drug candidates. This trend towards predictive toxicogenomics aims to develop a new compound's mechanism of action and predict toxicity, with several companies and consortia already working on this technology.

SourceMary Ann Liebert, Inc./Genetic Engineering News·JournalGenetic Engineering & Biotechnology News·DateNov 19, 2008

ADHD medications do not cause genetic damage in children

Researchers at NIH and Duke University Medical Center found no evidence of cytogenetic damage in children taking stimulant medications for ADHD. The study included 63 children aged 6-12 who received either methylphenidate or mixed amphetamine salts, and showed similar results with both treatments.

SourceNIH/National Institute of Environmental Health Sciences·JournalJournal of the American Academy of Child & Adolescent Psychiatry·DateNov 19, 2008

Scientists sequence woolly-mammoth genome

The researchers sequenced the mammoth's nuclear genome, yielding information about its evolution and extinction. They found that woolly mammoths separated into two groups around two million years ago and eventually became genetically distinct sub-populations.

SourcePenn State·JournalNature·DateNov 19, 2008

Genetic screening no better than traditional risk factors for predicting type 2 diabetes

Researchers found that genetic screening for type 2 diabetes is not significantly better than traditional risk factors such as weight, blood pressure, and blood sugar levels. The study identified 18 gene variants associated with increased risk, but the value of genetic screening improved as more risk genes were discovered.

SourceMassachusetts General Hospital·JournalNew England Journal of Medicine·DateNov 19, 2008