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Science News for December 3, 2012


How 'transparent' is graphene?

Recent research at MIT shows that adding a layer of graphene to a surface has little effect on its interaction with liquids, except for extreme cases. The team's findings demonstrate the ability to manipulate wettability while preserving electrical conductivity and optical properties.

SourceMassachusetts Institute of Technology·JournalPhysical Review Letters·DateDec 3, 2012

American Society of Clinical Oncology issues annual report on state of clinical cancer science

The American Society of Clinical Oncology (ASCO) has released its annual report on the top cancer advances of 2012, showcasing significant developments in precision medicine and targeted treatments. The report highlights seven new FDA approvals for anticancer agents, including therapies for breast and prostate cancers.

SourceAmerican Society of Clinical Oncology·JournalJournal of Clinical Oncology·DateDec 3, 2012

Listen up, doc: Empathy raises patients' pain tolerance

A Michigan State University research team discovered that doctors who listen carefully to their patients have happier patients with better health outcomes. The study found that patient-centered relationships reduce brain activity in the anterior insula, a region responsible for pain perception, and lead to lower self-reported pain levels.

SourceMichigan State University·JournalPatient Education and Counseling·DateDec 3, 2012

Plant organ development breakthrough

A team of scientists has made a groundbreaking discovery about the role of brassinosteroid hormone in plant organ development, shedding light on how plants form their organs and boundaries. The research found that activation of the brassinosteroid pathway represses genes responsible for organ boundary formation, leading to fused organs.

SourceCarnegie Institution for Science·JournalProceedings of the National Academy of Sciences·DateDec 3, 2012

JCI early table of contents for Dec. 3, 2012

Researchers have discovered that lithium restores cognitive function in Down syndrome mice, while stem cell-derived dopaminergic neurons improve motor defects in Parkinson's disease monkeys. Additionally, inhibiting a key protein in Alzheimer's disease may reduce plaque formation and improve memory tasks. Moreover, tempering inflammati...

SourceJCI Journals·JournalJournal of Clinical Investigation·DateDec 3, 2012

Common diabetes drug may help treat ovarian cancer

Researchers found that ovarian cancer patients who took metformin lived significantly longer than those who did not, with a 3.7 times increased survival rate after accounting for other factors. The study suggests metformin may be considered for prevention or treatment of ovarian cancer.

SourceWiley·JournalCancer·DateDec 3, 2012

'Junk DNA' drives embryonic development

Sanford-Burnham researchers found that two microRNA families, let-7 and miR-18, regulate germ layer formation by dampening the TGFβ signaling pathway. This discovery provides a paradigm for whole-genome screening and its use in identifying molecular signals controlling complex biological processes.

SourceSanford Burnham Prebys·JournalGenes & Development·DateDec 3, 2012

Research from King's College London reveals why some teenagers more prone to binge drinking

A new study by King's College London has identified the RASGRF2 gene as a key player in regulating alcohol-induced reinforcement, with individuals carrying the variation more likely to engage in binge drinking. The research also found that the absence of this gene reduces alcohol-seeking activity and impairs brain function.

SourceKing's College London·JournalProceedings of the National Academy of Sciences·DateDec 3, 2012

UMiami scientists partner with NOAA, Stanford and U of N Texas to study post spill fish toxicology

Researchers used hatchery technology to test the impact of DWH oil on mahi mahi embryos, finding that even low levels of PAHs can cause significant physiological damage. The study also revealed that photo-enhanced toxicity can increase sensitivity by up to 20-fold, affecting fish swimming performance and survival.

Research, response for future oil spills: Lessons learned from Deepwater Horizon

The Deepwater Horizon oil spill provided valuable lessons for future response efforts, emphasizing the importance of preparation and knowledge. Papers present a behind-the-scenes look at the extensive scientific and engineering effort assembled to respond to the disaster, evaluating the accuracy of information used in real-time.

SourceNOAA Headquarters·JournalProceedings of the National Academy of Sciences·DateDec 3, 2012

Biophysicists unravel cellular 'traffic jams' in active transport

Researchers at UMass Amherst use a custom microscope to study cellular active transport, discovering that high traffic slows cargo movement but doesn't hinder the process. By using quantum dots as biological probes, they found that multiple motors attached to a single cargo can overcome stalled motors and maintain efficient transport.

SourceUniversity of Massachusetts Amherst·JournalProceedings of the National Academy of Sciences·DateDec 3, 2012

Managing care and competition

Researchers from Harvard Medical School found that integrated care provided by managed care plans reduces resource use, potentially leading to overall savings. Risk-adjustment reforms have mitigated favorable selection, reducing the tendency of health plans to attract healthier patients.

SourceHarvard Medical School·JournalHealth Affairs·DateDec 3, 2012

U-M study shows BPA exposure in fetal livers

Researchers at U-M found BPA in fetal liver tissue, with varying levels of exposure detected. The study suggests that fetuses may not be able to metabolize BPA as effectively as adults, highlighting the importance of understanding internal doses for health effects.

SourceUniversity of Michigan·JournalJournal of Biochemical and Molecular Toxicology·DateDec 3, 2012

Corn: Many active genes - high yield

Researchers at the University of Bonn have decoded a possible mechanism for hybrid corn's high yield, finding that more genes are active in hybrid plants than in their homozygous parental lines. This increase in gene activity could lead to increased growth and vigor in hybrids.

SourceUniversity of Bonn·JournalGenome Research·DateDec 3, 2012

Study examines psychotropic medication use among US adolescents with mental disorders

A recent study found that 14.2% of adolescents ages 13 to 18 years with any mental disorder reported being treated with a psychotropic medication in the last 12 months. The study also revealed that antidepressants were most frequently used among those with primary mood disorders, while stimulant use was most common among those with ADHD.

SourceJAMA Network·JournalArchives of Pediatrics and Adolescent Medicine·DateDec 3, 2012

World's smallest wrench puts a new twist on microscopic manipulation

Researchers have created a fiber-optic equivalent of the world's smallest wrench, enabling precise control over microscopic particles like living cells and DNA. This new technique uses flexible optical fibers to twist and turn particles in any direction, promising advancements in biological research, healthcare, and more.

SourceOptica·JournalOptics Letters·DateDec 3, 2012

Male chimpanzees choose their allies carefully

A new study reveals that male chimpanzees who form coalitions with males who don't form coalitions themselves are more likely to sire offspring and increase their dominance rank. This suggests that the chimps recognize the value of making strategic social connections.

SourceSpringer·JournalBehavioral Ecology and Sociobiology·DateDec 3, 2012

Study spells out hat trick for making hockey safer

A new study found that mandatory rules, such as restrictions on body checking, can decrease penalties and injuries in ice hockey, particularly among young players. Researchers at St. Michael's Hospital recommend combining rule changes with educational strategies to promote sportsmanship and reduce brain injuries.

SourceSt. Michael's Hospital·JournalCanadian Medical Association Journal·DateDec 3, 2012

College students report low flu vaccine rate

According to a study by Wake Forest Baptist Medical Center, only one in five college students received the flu vaccine during the 2009-2010 season. The researchers suggest that colleges implement new or improved influenza vaccine strategies, such as giving flu shots at sporting events, to increase vaccination rates.

SourceAtrium Health Wake Forest Baptist·JournalJournal of American College Health·DateDec 3, 2012

Steps towards filming atoms dancing

Researchers create technique to measure temporal profile and arrival time of individual FEL pulses with femtosecond precision, allowing for precise study of atomic, molecular, and solid-state systems. The method enables filming of atoms in motion and exploration of processes that evolve within X-ray exposure.

SourceElhuyar Fundazioa·JournalNature Photonics·DateDec 3, 2012

New findings on glucagon synthesis

Researchers at Karolinska Institutet have discovered that glucagon stimulates its own synthesis, activating a self-reinforcing cycle of hormone production. This finding has significant implications for understanding the regulation of hormone secretion and may hold the key to studying defects in diabetes.

SourceKarolinska Institutet·JournalProceedings of the National Academy of Sciences·DateDec 3, 2012