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Science News Archive December 2011 - Page 3


Page 3 of 23

How do you mend a broken heart?

Researchers identified a family of molecules that can stimulate stem cells to develop into beating heart muscle cells, paving the way for new therapies for cardiac regeneration and repair. The discoveries were made using a zebrafish model system and showed promise in enhancing the inherent regenerative capacities of the heart.

SourceCell Press·JournalChemistry & Biology·DateDec 22, 2011

Shearing triggers odd behavior in microscopic particles

A team of scientists has imaged and explained the formation of string structures in microscopic spheres suspended in a viscous fluid under shear forces. The study revealed that these strings were perpendicular to the shear force, contrary to expectations, and were influenced by lubrication forces.

SourceUniversity of Chicago·JournalProceedings of the National Academy of Sciences·DateDec 22, 2011

Fish oil may hold key to leukemia cure

A Penn State research team has discovered a compound produced from fish oil that targets and kills leukemia stem cells, potentially leading to a cure for the disease. The compound, D12-PGJ3, selectively activates a gene in leukemia stem cells that programs their own death.

SourcePenn State·JournalBlood·DateDec 22, 2011

AGU journal highlights -- Dec. 22, 2011

Researchers analyzed recorded ozone data to assess changes in ozone loss rates over the past 15 years. They predict that ozone loss rates will begin to decline noticeably between 2017 and 2021. Meanwhile, a study found that tropical cyclones can temporarily alleviate escalating sea surface temperatures, staving off coral bleaching. Fur...

SourceAmerican Geophysical Union·JournalGeophysical Research Letters·DateDec 22, 2011

'Nanoantennas' show promise in optical innovations

Researchers at Purdue University have developed nanoantennas that precisely manipulate light, allowing for the alteration of its phase and propagation direction. This enables potential applications in steering and shaping laser beams, nanocircuits for computers, and powerful lenses for microscopes.

SourcePurdue University·JournalScience·DateDec 22, 2011

Defending the genome

Researchers discovered that when a new transposon is introduced, it triggers a response that disrupts the piRNA machinery, leading to a massive destabilization of the genome. However, as the hybrids aged, they learned to shut down the new transposon and restore fertility.

SourceUMass Chan Medical School·JournalCell·DateDec 22, 2011

New device could bring optical information processing

Researchers at Purdue University have developed a new type of optical device that can process information in one direction, eliminating the need for translation and increasing bandwidth. This innovation has the potential to lead to faster and more powerful supercomputers by connecting multiple processors together.

SourcePurdue University·JournalScience·DateDec 22, 2011

Research finds Medicare and private insurance spending similar throughout Texas

Researchers at the University of Texas Health Science Center at Houston found that variations in health care spending by Medicare and Blue Cross Blue Shield of Texas are similar throughout the state. The study compared spending and inpatient admissions across 32 Texas regions, concluding no significant differences between the two.

SourceUniversity of Texas Health Science Center at Houston·JournalThe American Journal of Managed Care·DateDec 21, 2011

Language learning through hip-hop music

A study published in PLOS ONE found that participants who listened to more hip-hop artists had better knowledge of non-mainstream words and phrases used in the genre. Additionally, knowing the artists used in songs enhanced vocabulary understanding. These findings suggest a novel aspect of language learning among adolescents.

SourcePLOS·JournalPLOS ONE·DateDec 21, 2011

Autism Speaks awards 47 new research grants funding

Autism Speaks has awarded 47 new research grants, totaling $13.2 million, to advance understanding of epigenetic and gene-environment influences, neurobiology, and studies on adolescents and adults with autism. The grants will focus on increasing early diagnosis, improving treatment outcomes, and reducing the economic cost of autism.

Problems with a gastric band

A Case Report in The Lancet describes a woman's experience with late pulmonary complications after gastric banding, including recurrent aspiration and cavitation. The authors stress the importance of recognizing these rare but potentially misdiagnosed conditions, particularly among patients with respiratory symptoms.

SourceThe Lancet_DELETED·JournalThe Lancet·DateDec 21, 2011

Gene links rare and unrelated cancers

A research team led by Dr. David Huntsman and Dr. Gregg Morin found that mutations in the DICER gene were responsible for rare, unrelated cancers, revealing a fundamental process underlying these tumors. The discovery has the potential to lead to new approaches to treating both rare and common cancers.

SourceUniversity of British Columbia·JournalNew England Journal of Medicine·DateDec 21, 2011

Having a cow can be a heart healthy choice

A new study from Penn State suggests that lean beef can be part of a heart-healthy diet when saturated fat levels are controlled. The DASH diet, which emphasizes plant protein foods and fish, was compared to two other diets: Beef in an Optimal Lean Diet (BOLD) and BOLD plus additional protein.

SourcePenn State·JournalAmerican Journal of Clinical Nutrition·DateDec 21, 2011

Why bigger is better when it comes to our brain and memory

A new study published in Neuron found that a larger posterior hippocampus and smaller anterior hippocampus are linked to better recollection ability in healthy adults. The researchers suggest that functional connections between the posterior hippocampus and other brain regions play a key role in enhanced memory consolidation.

SourceCell Press·JournalNeuron·DateDec 21, 2011

Prototype NIST device measures absolute optical power in fiber at nanowatt levels

Researchers have demonstrated a prototype device capable of absolute measurements of optical power delivered through an optical fiber, outperforming existing devices with improved temperature control and speed. The new radiometer can measure power levels as low as 10 nanowatts with high accuracy, paving the way for ultraprecise calibra...