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Science News Archive 2009 - Page 6


Page 6 of 277

Within a cell, actin keeps things moving

Actin's behavior has been studied using inhibitory agents and hormones to induce a state of fluctuation in yeast cells. The findings suggest that mitochondria recruit actin-related proteins to assemble into extended fractal-like structures, coordinating movement and supporting the idea that intracellular transport is achieved through a...

SourceUniversity of Oregon·JournalProceedings of the National Academy of Sciences·DateDec 17, 2009

Are patients losing sleep over blood pressure monitors?

A study found that patients with kidney disease experienced disrupted sleep when using a widely used blood pressure monitor, leading to inaccurate results. The ambulatory blood pressure monitoring test, which measures blood pressure during sleep, can interfere with sleep patterns, causing an increase in nighttime blood pressure.

SourceAmerican Society of Nephrology·JournalClinical Journal of the American Society of Nephrology·DateDec 17, 2009

Media availability: Genetic variant may control lung function and risk of COPD

Researchers discovered a genetic variant associated with preserved lung function in children with asthma and adults who smoke. The study found a significant reduction in the risk of developing chronic obstructive pulmonary disease (COPD) in adult smokers with this variant, offering new insights into the mechanisms of COPD.

SourceNIH/National Heart, Lung and Blood Institute·JournalNew England Journal of Medicine·DateDec 17, 2009

Color my numbers

A study published in Cortex found that synaesthetes can exhibit automatic color experiences when presented with numbers or patterns, regardless of their conscious awareness. The research suggests that learning may contribute to the development of these associations.

SourceElsevier·JournalCortex·DateDec 17, 2009

About 25 percent of Arabs in Greater Detroit reported abuse post Sept. 11

A new study found that 25% of Arab Americans in Greater Detroit experienced abuse due to race or religion since 9/11, leading to increased psychological distress and poorer perceptions of health. The study highlights the need for partnerships with community organizations to encourage mental health services among this population.

SourceMichigan Medicine - University of Michigan·JournalAmerican Journal of Public Health·DateDec 17, 2009

Invasion without a stir

Scientists discovered that membrane ruffles are not essential for Salmonella to penetrate host cell membranes. A new factor called WASH promotes bacterial invasion by contributing to cytoskeletal filament formation.

SourceHelmholtz Association·JournalCellular Microbiology·DateDec 17, 2009

Heme channel found

Researchers at Washington University have discovered a channel protein that shields and transports the crucial heme molecule across cell membranes. The channel, found in plants and bacteria, helps protect heme from oxidative damage as it makes its journey outside the cell.

SourceWashington University in St. Louis·JournalProceedings of the National Academy of Sciences·DateDec 17, 2009

An unusual case of variant CJD

A 30-year-old man died of variant Creutzfeldt-Jakob disease (vCJD) with a unique genetic profile, highlighting potential cases with long incubation periods. His heterozygous PRNP gene may indicate silently infected individuals, posing concerns for public health.

SourceThe Lancet_DELETED·JournalThe Lancet·DateDec 17, 2009

Kidney injury in hospital increases long-term risk of death

A study published in Journal of the American Society of Nephrology found that patients with acute kidney injury (AKI) who did not require dialysis had a significantly higher risk of death over two years compared to those without AKI. The risk was even higher for patients with more severe AKI and returned to normal after discharge.

SourceAmerican Society of Nephrology·JournalJournal of the American Society of Nephrology·DateDec 17, 2009

Umbilical cord could be new source of plentiful stem cells, say Pitt researchers

Researchers at the University of Pittsburgh School of Medicine have found that umbilical cord tissue contains a plentiful supply of stem cells that could be used to treat various muscle and bone disorders. The study reveals that these cells can be easily harvested from the tissue, expanded in number, and are remarkably stable.

SourceUniversity of Pittsburgh Schools of the Health Sciences·JournalJournal of Biomedicine and Biotechnology·DateDec 17, 2009

Exploring the Stone Age pantry

Researchers have discovered that early Homo sapiens consumed wild sorghum and other pre-domesticated cereals around 100,000 years ago. This finding broadens our understanding of human evolution by showcasing the importance of dietary transformation through cereal consumption.

SourceUniversity of Calgary·JournalScience·DateDec 17, 2009

Zoning the ocean may help endangered whales to recover

A new method to identify priority areas for whale conservation has been proposed, suggesting that even small protected areas can benefit highly mobile marine predators like killer whales. The research highlights the importance of feeding behavior in conserving endangered southern resident killer whale populations.

SourceWiley·JournalAnimal Conservation·DateDec 16, 2009

Prayer on the hospital floor

A recent study by Brandeis and Rice University sociologists found that families frequently raise the topic of prayer when a child is seriously ill or dying. Pediatricians respond to these requests in different ways, including participating in prayers, accommodating them, reframing prayers for realism, or referring patients to religious...

SourceBrandeis University·JournalSouthern Medical Journal·DateDec 16, 2009

Critical communication for caregivers

Researchers identify ineffective communication strategies that can worsen problem behaviors in family members with dementia. Effective communication, on the other hand, can resolve misunderstandings and reduce distress. The study aims to develop empirically derived communication interventions for caregivers targeting both problems.

Leprosy susceptibility genes reported in New England Journal of Medicine paper

A large-scale genetic study has identified seven genes that increase an individual's susceptibility to leprosy, a chronic infectious disease affecting skin and peripheral nerves. The discovery highlights the role of innate immune response in leprosy development and may lead to early diagnosis and treatment.

SourceAgency for Science, Technology and Research (A*STAR), Singapore·JournalNew England Journal of Medicine·DateDec 16, 2009