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Science News Archive April 2011 - Page 7


Page 7 of 26

Evolution can cause a rapid reduction in genome size

Researchers have decoded the entire genome of lyre-leaved rock cress, a close relative of the thale cress, revealing that its genome is significantly larger. The study found that considerable elements were lost from the thale cress genome, with hundreds of thousands of small deletions accounting for most of the differences in size.

SourceMax-Planck-Gesellschaft·JournalNature Genetics·DateApr 21, 2011

Salmonella utilize multiple modes of infection

Researchers at Helmholtz Centre for Infection Research found a new Salmonella infection mechanism targeting the actin cytoskeleton and exploiting myosin II motor protein. This approach allows bacteria to pull themselves into host cells without forming ruffles, expanding the known invasion strategies.

SourceHelmholtz Association·JournalCell Host & Microbe·DateApr 21, 2011

UK's tuberculosis screening strategy for immigrants misses most imported cases of latent infection and unlikely to prevent the spread of disease

A study finds that the UK's current tuberculosis screening policy for immigrants is missing 70% of imported latent infections. Implementing a broader screening program could identify 92% of infected immigrants and reduce future cases of active tuberculosis while remaining cost-effective.

SourceThe Lancet_DELETED·JournalThe Lancet Infectious Diseases·DateApr 20, 2011

Limit to nanotechnology mass-production?

A leading nanotechnology scientist proposes a 3nm diameter threshold for mass-produced structures, citing unpredictability in bottom-up manufacturing. This challenge raises concerns about the billions invested in nanotechnology research and development.

SourceIOP Publishing·JournalNanotechnology·DateApr 20, 2011

Electronic medical records speed genetic health studies

Researchers at Northwestern University have found that using electronic medical records to identify patients with diseases can be faster and cheaper than recruiting thousands of participants. The study used data from five national sites to accurately identify patients with five types of diseases, achieving accuracy rates of 73-98%.

SourceNorthwestern University·JournalScience Translational Medicine·DateApr 20, 2011

Laser sparks revolution in internal combustion engines

Researchers have developed a new laser system that can ignite engine air-fuel mixtures more efficiently than traditional spark plugs. The laser system is made from ceramics and promises less pollution and greater fuel economy, but further testing is needed to make it commercially viable.

SourceOptica·DateApr 20, 2011

Ring around the hurricanes: Satellites can predict storm intensity

Researchers developed a method to use passive microwave satellite imagery to monitor hurricane structure and intensity changes, revealing patterns in storm dynamics. This allows for a 30-hour window before a storm hits its maximum strength, enabling forecasters to issue earlier warnings and evacuate areas at risk.

SourceUniversity of Illinois at Urbana-Champaign, News Bureau·JournalGeophysical Research Letters·DateApr 20, 2011

Long-term poverty but not family instability affects children's cognitive development

UK researchers found that persistent poverty affects children's cognitive functioning at the age of five, while family instability does not have a significant impact. The study, based on data from 18,819 families in the UK, shows that children growing up in stable two-parent families have higher levels of cognitive ability than those i...

SourceBMJ Group·JournalJournal of Epidemiology and Community Health·DateApr 20, 2011

Starting a new metabolic path

Researchers at JBEI have developed a technique called targeted proteomics that enables the rapid identification and quantification of specific proteins in cells or microbes. This technique can help identify bottlenecks in metabolic pathways, leading to improved efficiency and productivity in biofuel and therapeutic drug production.

SourceDOE/Lawrence Berkeley National Laboratory·JournalMetabolic Engineering·DateApr 20, 2011

Low carbohydrate diet may reverse kidney failure in people with diabetes

Researchers from Mount Sinai School of Medicine have found that a ketogenic diet may reverse impaired kidney function in people with Type 1 and Type 2 diabetes. The study, published in PLoS ONE, also identified previously unreported genes associated with diabetes-related kidney failure whose expression was reversed by the diet.