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Science News Archive November 2005 - Page 14


Page 14 of 16

Reflecting on personal values offers protection from effects of stress, UCLA psychologists report

Researchers at UCLA found that reflecting on personal values can significantly lower cortisol levels after stressful events, providing a potential new method to combat stress. The study involved 80 undergraduates who underwent stressful tasks, with those reflecting on meaningful values showing reduced cortisol responses.

SourceUniversity of California - Los Angeles·JournalPsychological Science·DateNov 4, 2005

Dyslexia: risk gene is identified

A German-Swedish team has identified a single gene, DCDC2, as an important factor in the emergence of dyslexia. The gene appears to affect the migration of nerve cells in the developing brain, with frequent changes found among dyslexics.

SourceUniversity of Bonn·JournalAmerican Journal of Human Genetics·DateNov 3, 2005

UCR environmental scientists propose chemical solution to cleaning California's Salton Sea

Researchers found that alum and polyacrylamide were highly effective in removing dissolved phosphorus and suspended sediment in river waters entering the lake. This treatment could help meet California's growing population needs, support commercial growth, and develop the region as a water-sports recreational area.

SourceUniversity of California - Riverside·JournalJournal of Environmental Quality·DateNov 3, 2005

Making medicine 'smarter'

Anke Meyer-Baese is developing computer software to mimic the way a radiologist analyzes all of that information -- and to do it better and faster. The goal is to provide doctors with a new tool to better diagnose breast cancer using MRI technology, which holds promise in detecting hard-to-find cases.

Yale scientists confirm how crystals form

Researchers at Yale University have devised a way to predict the microstructure of crystals as they form in materials. This new method enables the estimation of grain size and subsequent material properties dependent on microstructure, opening up possibilities for tailoring material characteristics.

SourceYale University·JournalApplied Physics Letters·DateNov 3, 2005

Compound in wine reduces levels of Alzheimer's disease-causing peptides

Researchers found that resveratrol, a compound in red wine, significantly reduces amyloid-beta peptide levels in cells. The compound is believed to stimulate the degradation of these peptides by the proteasome, a multi-protein complex. However, it remains unclear whether eating grapes can effectively prevent Alzheimer's disease.

SourceAmerican Society for Biochemistry and Molecular Biology·JournalJournal of Biological Chemistry·DateNov 3, 2005

Forgotten by evolution?

Scientists discovered that some adult stem cells express characteristics of muscle and heart cells, suggesting they could be the 'footprints' of evolution. The researchers believe these cells may be incomplete or 'rudiments' of earlier embryonal differentiation processes.

SourceMax-Planck-Gesellschaft·JournalMolecular and Cellular Biology·DateNov 2, 2005

Shortness of breath without chest pain can signify the presence of high risk heart disease

Researchers at Cedars-Sinai Medical Center found that shortness of breath can signify a higher risk of dying from cardiac disease. The study, which evaluated nearly 18,000 patients, revealed that patients with shortness of breath were four times more likely to suffer death from a cardiac cause than asymptomatic patients.

SourceCedars-Sinai Medical Center·JournalNew England Journal of Medicine·DateNov 2, 2005

Biologists discover new pathway into plant cells

Researchers at Oregon State University have identified a protein that can cross plant cell membranes and function as a toxin, allowing for potential manipulation of plant behavior. The discovery bears similarity to mammalian cell function and may lead to new tools for delivering compounds inside plant cells.

SourceOregon State University·JournalThe Plant Cell·DateNov 2, 2005

Explaining why the Millennium Bridge wobbled

The Millennium Bridge's wobble was caused by a sudden synchronization of pedestrians' footsteps, which became unstable as more people joined in. Researchers found that only around 160 people were needed to trigger this phenomenon, which could be used to inform future bridge designs.

SourceCornell University·JournalNature·DateNov 2, 2005