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Science News Archive April 2015 - Page 14


Page 14 of 36

When genes are expressed in reverse: Discovered a regulatory mechanism of antisense DNA

Researchers at IDIBELL have discovered a molecular mechanism that explains how antisense DNA transcripts regulate gene expression in cancer. The findings provide new clues and mechanisms to understand the functions and alterations of these transcripts in cancer, including their role in tumor invasion.

SourceIDIBELL-Bellvitge Biomedical Research Institute·JournalProceedings of the National Academy of Sciences·DateApr 21, 2015

Phytoplankton, reducing greenhouse gases or amplifying Arctic warming?

A recent study by POSTECH researchers suggests that phytoplankton may amplify Arctic warming under greenhouse conditions, contrary to previous assumptions. The growth of phytoplankton is triggered by the melting of sea ice, leading to a positive feedback loop that warms the ocean surface and amplifies climate change.

SourcePohang University of Science & Technology (POSTECH)·JournalProceedings of the National Academy of Sciences·DateApr 21, 2015

Sweet potato naturally 'genetically modified'

Researchers at Ghent University discovered that sweet potatoes contain genes from the bacterium Agrobacterium, which were likely introduced through horizontal gene transfer. The findings suggest that genetic modification also occurs in nature, and could have implications for our understanding of plant evolution.

SourceGhent University·JournalProceedings of the National Academy of Sciences·DateApr 21, 2015

Caltech researchers create 'comb' that detects terahertz waves with extreme precision

Researchers at Caltech have developed a device called a frequency comb to detect terahertz waves, allowing for precise measurement and identification of molecules in space. The device can measure thousands of frequencies simultaneously, enabling scientists to analyze the chemical fingerprints associated with various molecules.

SourceCalifornia Institute of Technology·JournalPhysical Review Letters·DateApr 21, 2015

Babies feel pain 'like adults'

A pioneering Oxford University study using MRI scans found that babies experience pain much like adults, with 18 of 20 brain regions active in adults also active in babies. The study suggests that infants may be more sensitive to pain than adults and highlights the need for improved pain relief guidelines.

Patients grapple with high cost of arthritis medications

A recent study found that patients with rheumatoid arthritis face high initial copayments and then fall into a coverage gap, where they pay 45% of drug costs. This financial burden can be substantial, with some patients paying over $2,700 annually before receiving relief from catastrophic coverage.

SourceWiley·JournalArthritis & Rheumatology·DateApr 21, 2015

Virtual telescope expands to see black holes

Astronomers have combined telescopes across the Earth to create the Event Horizon Telescope, which will take detailed images of the supermassive black hole at the center of the Milky Way galaxy. The South Pole Telescope has joined the EHT, bringing a two-to-three times increase in resolution to study black holes and test Einstein's the...

Type 2 diabetes: Understanding regulation of sugar levels for better treatment

Researchers have identified a new mechanism that controls glucagon secretion in humans, which could lead to more effective treatment of type 2 diabetes. By understanding this phenomenon, it is possible to elucidate the paradoxical effect of a new class of diabetes drugs and suggest modifications to this new type of treatment.

Getting better all the time: JILA strontium atomic clock sets new records

The JILA strontium atomic clock has achieved unprecedented precision and stability levels, outperforming previous world records by more than three times. This breakthrough enables the measurement of tiny changes in time and gravity, with applications in advanced communications, positioning technologies, and relativistic geodesy.

Extending climate predictability beyond El Niño

Researchers have made breakthroughs in predicting tropical Pacific climate variations, extending the lead time from three seasons to up to three years. The new findings reveal a more complex relationship between the Atlantic and Indian Oceans, providing insights into long-term climate variability and its impact on global weather patterns.

SourceUniversity of Hawaii ‑ SOEST·JournalNature Communications·DateApr 21, 2015

Calculating how the Pacific was settled

A University of Utah anthropologist analyzed statistics to determine how Pacific islands were settled between 3,500 and 900 years ago. The study found that seafarers traveled mostly against prevailing winds and sought easily visible islands, rather than relying on distance or resource availability.

SourceUniversity of Utah·JournalAmerican Antiquity·DateApr 21, 2015

UAlberta research reveals new possibilities for islet and stem cell transplantation

Researchers have developed a new technique for islet transplantation under the skin, which shows promise in reversing diabetes in preclinical models. This approach harnesses the body's natural ability to respond to a foreign body by growing new blood vessels, offering a safer and more reliable treatment option.