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Science News Archive February 2013 - Page 14


Page 14 of 28

Breast cancer risk prediction model for African American women underestimates risk

A new study found that a commonly used breast cancer risk prediction model developed for African Americans tends to underestimate risk in certain subgroups, particularly those who first gave birth at an older age. The researchers conclude that a better risk model is needed for estrogen receptor-negative breast cancer, a subtype disprop...

SourceBoston University School of Medicine·JournalJNCI Journal of the National Cancer Institute·DateFeb 15, 2013

Extreme winters impact fish negatively

Research at Umea University found that extreme winter conditions impact fish negatively, particularly in streams and rivers with radical flow changes and anchor ice formation. The study highlights the need for more measurements and consideration of winter conditions in models to manage streams and rivers sustainably.

SourceUmea University·JournalBioScience·DateFeb 15, 2013

Playing quantum tricks with measurements

Researchers at the University of Innsbruck successfully reversed a quantum measurement using quantum error correction protocol, which contradicts foundational principles. This experiment demonstrates that information can be reconstructed from entangled states after individual particle measurements.

SourceUniversity of Innsbruck·JournalPhysical Review Letters·DateFeb 15, 2013

JCI early table of contents for Feb. 15, 2013

Researchers found that cigarette smoke-induced miRNA alterations promote lung carcinogenesis by repressing miR-487b. Additionally, high levels of ox-CaMKII are linked to increased risk of sudden death after heart attack in diabetic patients, suggesting a potential mechanism for increased mortality.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateFeb 15, 2013

This is why it takes so long to get over tendon injuries

Researchers discovered that Achilles tendons retain high levels of carbon-14 from the Cold War era, indicating limited renewal and a slow healing process. This finding explains why tendon injuries often persist for years, but also opens up opportunities for developing new treatments to provoke dormant cells into repairing the tendon.

SourceAarhus University·JournalThe FASEB Journal·DateFeb 15, 2013

A smoking gun in lung cancer epigenetics

A recent study reveals that cigarette smoke-induced miRNA expression alterations, specifically the repression of miR-487b, play a crucial role in lung carcinogenesis. Loss of miR-487b increases oncogene expression and enhances tumor proliferation, invasion, and metastasis in both normal and cancer cells.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateFeb 15, 2013

Nano-machines for 'bionic proteins'

Physicists at the University of Vienna created nano-machines that replicate protein functions, enabling innovative pharmaceutical research. These 'bionic proteins' could be used as stable drug delivery vehicles and enzyme-like catalysts, revolutionizing various biological processes.

SourceUniversity of Vienna·JournalPhysical Review Letters·DateFeb 15, 2013

Clues to the mysterious origin of cosmic rays

A team of astronomers used the VIMOS instrument on the VLT to study a one-thousand-year-old supernova remnant. They found evidence of rapidly moving protons in the gas, which could be the necessary seed particles for cosmic rays to form.

SourceESO·JournalScience·DateFeb 14, 2013

Slithering towards extinction

A new study reveals that nearly 1 in 5 reptiles are struggling to survive, with many species highly specialized and sensitive to environmental changes. The findings highlight the urgent need for conservation action to address habitat loss, hunting, and other threats, particularly in tropical regions.

SourceZoological Society of London·JournalBiological Conservation·DateFeb 14, 2013

Noncoding RNAs offer huge therapeutic and diagnostic potential

Researchers have discovered a vast potential for noncoding RNAs to be used as therapeutic and diagnostic tools. Long noncoding RNAs play significant roles in various diseases, including cancer, diabetes, and other conditions. The emerging concept of microRNAs functioning as hormones has also led to new avenues for disease treatment.

SourceMary Ann Liebert, Inc./Genetic Engineering News·JournalNucleic Acid Therapeutics·DateFeb 14, 2013

Study: Behavioral therapy for children with autism can impact brain function

Researchers found increased activation in brain regions utilized by typically developing kids after four months of Pivotal Response Treatment. This suggests improved social engagement and processing of low-level social stimuli. The study's findings have implications for early intervention and potential long-term benefits.

SourceUniversity of California - Santa Barbara·JournalJournal of Autism and Developmental Disorders·DateFeb 14, 2013

A quantum dot energy harvester

A new type of nanoscale engine uses quantum dots to convert waste heat into electrical power, potentially making microcircuits more efficient. The system exploits resonant tunneling and can generate a significant amount of power depending on the temperature difference across the energy harvester.

SourceUniversity of Rochester·JournalPhysical Review B·DateFeb 14, 2013

Math helps detect gang-related crime and better allocate police resources

Researchers used police department records to determine gang memberships based on social and geographical information, identifying hotspots and clusters of individuals with similar behavior. The study showed that incorporating both social and geographic distance in models of gang violence provides more comprehensive analysis.

SourceSociety for Industrial and Applied Mathematics·JournalSIAM Journal on Applied Mathematics·DateFeb 14, 2013