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Science News Archive 2006 - Page 12


Page 12 of 178

Feeling sad about Iraq? New research finds that it won't keep you from buying American products

A new study finds that negative feelings towards a country do not necessarily lead to product evaluations based on country of origin. Angry consumers may try to punish a country by avoiding its products, while saddened consumers believe the event is beyond human control and do not affect their purchasing.

SourceUniversity of Chicago Press Journals·JournalJournal of Consumer Research·DateDec 5, 2006

How movement lubricates bone joints

Bioengineering researchers at UC San Diego have shown that sliding forces on cartilage surfaces increase the production of proteoglycan 4, an important step towards growing healthy joint tissue. This discovery has significant implications for the treatment of osteoarthritis and the development of artificial joints.

SourceUniversity of California - San Diego·JournalOsteoarthritis and Cartilage·DateDec 5, 2006

Other highlights in the Dec. 6 JNCI

A new Italian risk model was found to be as accurate as a commonly used US model in predicting breast cancer diagnosis, suggesting the possibility of revising the model to include additional risk factors. Additionally, genetic variants have been linked to diarrhea when treated with certain cancer drugs, including gefitinib.

SourceJournal of the National Cancer Institute·JournalJNCI Journal of the National Cancer Institute·DateDec 5, 2006

Controlling confusion -- Researchers make insight into memory, forgetting

A study by UW-Madison researchers found that the inferior frontal gyrus (IFG) is essential for blocking interference in memory, which can lead to confusion. The technique of transcranial magnetic stimulation (TMS) allowed them to temporarily disrupt the IFG and demonstrate its crucial role in controlling memory operations.

SourceUniversity of Wisconsin-Madison·JournalProceedings of the National Academy of Sciences·DateDec 4, 2006

High-resolution imaging with contrast agent shows promise in osteoarthritis research

Researchers have developed a noninvasive imaging technique that uses a contrast agent and microcomputed tomography to image cartilage in osteoarthritis research. The technique, dubbed EPIC-microCT, reveals information about cartilage thickness and composition, allowing for the monitoring of osteoarthritis progression and treatment.

SourceGeorgia Institute of Technology·JournalProceedings of the National Academy of Sciences·DateDec 4, 2006

Early HIV treatment fails to restore memory T cells

A study published in PLoS Medicine found that HIV treatment does not restore memory T cells in most people, despite years of antiviral therapy. The researchers discovered that intestinal immune cells remained low and elevated immune activation persisted, suggesting potential clinical problems over time.

SourcePLOS·JournalPLOS Medicine·DateDec 4, 2006

Enhanced depression care may be cost-effective for employers

A cost-effectiveness analysis suggests that enhanced depression screening and care can reduce costs for employers. The program, which includes telephone counseling and depression management strategies, is estimated to save $2,895 per 1,000 workers over five years due to reduced absenteeism and employee turnover costs.

SourceJAMA Network·JournalArchives of General Psychiatry·DateDec 4, 2006

Peering into the shadow world of RNA

Research suggests that non-coding RNA forms interact with each other and genes to manage the genome, influencing processes like embryonic development and cancer formation. The discovery of RNA editing mechanisms, such as ADAR and microRNAs, reveals a subtle level of genome control.

SourceThe Wistar Institute·JournalNature Reviews Molecular Cell Biology·DateDec 4, 2006

CGIAR climate change research

The CGIAR research program aims to develop climate-resilient crops like maize, sorghum, and millet that can withstand drought and heat. Researchers are using molecular biology tools to identify genetic hot spots in these crops, enabling them to capture solar energy more efficiently and produce greater yields.

SourceBurness·DateDec 4, 2006

New highways carry pathogens and social change in Ecuador

A new study by the University of Michigan found that the construction of new highways in rural Ecuador is linked to higher rates of diarrheal diseases and a breakdown of traditional social structures. The roads, which connect previously isolated villages, bring new people and bacteria, leading to increased infection rates.

SourceUniversity of Michigan·JournalProceedings of the National Academy of Sciences·DateDec 4, 2006

Fishy cooperation

Researchers discovered that groupers and giant moray eels work together to hunt prey, sharing roles and coordinating behavior. This mutually beneficial arrangement highlights the complexity of fish social interaction and challenges our understanding of animal intelligence.

SourcePLOS·JournalPLOS Biology·DateDec 4, 2006

Exposures to the insecticide chlorpyrifos in pregnancy adversely affect child development

A study published in Pediatrics found that prenatal exposure to chlorpyrifos, a common agricultural insecticide, was associated with poorer mental and motor development in children by age three. The study also revealed an increased risk of behavior problems among children exposed to higher levels of the insecticide.

Efforts for whites to appear colorblind may backfire

Researchers found that whites who avoid using race in social interactions tend to exhibit less friendly nonverbal behaviors, such as reduced eye contact. This study suggests that attempting to appear colorblind may have unintended results and actually lead to perceived distance and unfriendliness.

SourceTufts University·JournalPsychological Science·DateDec 4, 2006

Ongoing collapse of coral reef shark populations

Researchers found that reef shark abundance on reefs open to fishing is about ten times lower than on unfished reefs. High reef shark abundance was only apparent on the most strictly enforced no-take zones, suggesting moderate poaching can derail conservation efforts.

SourceCell Press·JournalCurrent Biology·DateDec 4, 2006

Vanishing beetle horns have surprise function

Researchers discovered that Onthophagus horned beetles use their young horns to bust out of thick larval shells, a function previously unknown. The finding suggests that the evolution of adult horn shape may have occurred secondarily, with the initial function being for larval molting.

SourceIndiana University·JournalEvolution·DateDec 4, 2006

How to herd atoms

Physicists at the Max Planck Institute have discovered a way to arrange randomly deposited atoms in regular patterns, mimicking the behavior of sheep in a pen. By adjusting substrate temperature and parameters, they created circular fencing that guides adatoms into ordered structures.

SourceMax-Planck-Gesellschaft·JournalPhysical Review Letters·DateDec 4, 2006

Regulatory pathway in brain development possible basis for malformations

A team of researchers at UCSD School of Medicine has identified a genetic regulatory pathway that controls the choice between proliferation and differentiation in neural cells. Defects in this pathway result in brain malformations, such as Dandy-Walker malformation, which affects motor development and causes progressive skull enlargement.

SourceUniversity of California - San Diego·JournalProceedings of the National Academy of Sciences·DateDec 4, 2006

Tearing down the fungal cell wall

Scientists identify AbNPS2 gene crucial to fungal spore cell wall integrity, impacting viability and host plant damage. Disruption of the gene leads to structural changes, decreased germination rates, and reduced survival under adverse conditions.

SourceVirginia Tech·JournalMolecular Plant Pathology·DateDec 4, 2006