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Science News for March 24, 2014


Study: Stress impacts ability to get pregnant

Researchers found that women with high levels of stress biomarkers are more than twice as likely to meet the clinical definition of infertility compared to those with low levels. The study also suggests that managing stress using techniques like yoga and meditation may help women conceive, although it's not the only factor involved.

SourceMediaSource·JournalHuman Reproduction·DateMar 24, 2014

Pioneer Award recipients Marina Cavazzana and Adrian Thrasher recognized for advancing gene therapy to the clinic for immunodeficiency disorders

Marina Cavazzana and Adrian Thrasher have been honored with the Pioneer Award for basic and clinical gene therapy for immunodeficiency disorders. They are pioneers in treating life-threatening inherited diseases of the immune system with gene therapy, using a patient's own modified stem cells.

Shorter sleepers are over-eaters

A new study by University College London researchers found that 16-month-old children sleeping less than 10 hours a day consumed an average of 105kcal more per day than those sleeping over 13 hours, contributing to weight gain in early childhood.

SourceUniversity College London·JournalInternational Journal of Obesity·DateMar 24, 2014

Life hots up for British birds

A new study by University of Sheffield researchers found that warm spring weather increases the survival rate of British small bird species. The research challenged a common assumption about the cause of death for these birds during winter.

SourceUniversity of Sheffield·JournalOikos·DateMar 24, 2014

Researchers improve performance of III-V nanowire solar cells on graphene

Researchers at the University of Illinois have developed a novel solar cell architecture based on dense arrays of coaxial p-n junction InGaAs nanowires on InAs stems grown directly on graphene. The resulting ternary InGaAs NW arrays demonstrate a conversion efficiency of 2.51% under air mass 1.5 global solar illumination, representing ...

Hot nanoparticles for cancer treatments

Researchers at ETH Zurich have developed hot nanoparticles that can kill tumour tissue with heat by absorbing near-infrared light. The particles are coated with a silicon dioxide layer and aggregate in a way that allows them to absorb light and generate heat.

SourceETH Zurich·JournalAdvanced Functional Materials·DateMar 24, 2014

Studying crops, from outer space

Researchers have developed a new approach to measuring photosynthetic activity using satellite technology, providing direct observations of photosynthesis on a large scale for the first time. The study reveals that previous model-based estimates are too low and provides a tool to assess production in various regions.

SourceCarnegie Institution for Science·JournalProceedings of the National Academy of Sciences·DateMar 24, 2014

Patient enrollment, use, and satisfaction with patient portals

A study examined patient portal enrollment, use, and satisfaction among physicians in a fee-for-service multispecialty system. Despite financial incentives, many physicians struggle to meet meaningful use standards, with primary care physicians often satisfying their expectations without redesigns.

SourceSAGE·JournalAmerican Journal of Medical Quality·DateMar 24, 2014

Low back pain accounts for third of all disability linked to work

A third of all work-related disability worldwide is attributed to low back pain, primarily affecting agricultural sector workers and individuals between 35-65. The study analyzed data from the Global Burden of Disease 2010 study, indicating that these groups are almost four times more likely to develop low back pain disability.

SourceBMJ Group·JournalAnnals of the Rheumatic Diseases·DateMar 24, 2014

Fair bosses pay a price

A new study by Michigan State University found that fair bosses can be emotionally draining due to the need to monitor fairness in workplace decisions. This 'procedural justice' requires managers to suppress personal biases and maintain consistency, leading to mental fatigue.

SourceMichigan State University·JournalJournal of Applied Psychology·DateMar 24, 2014

Psychiatric complications in women with PCOS often linked to menstrual irregularity

A study published in the Journal of Behavioral Health Services & Research found that women with polycystic ovary syndrome (PCOS) are more likely to experience anxiety and depression due to menstrual irregularities. The study also found that body hair growth was strongly associated with anxiety, while obesity was linked to hostility.

SourceColumbia University Irving Medical Center·JournalThe Journal of Behavioral Health Services & Research·DateMar 24, 2014

Low parking costs may encourage automobile use

A new study by Drexel University found that low parking costs are associated with increased public transit miles, despite efforts to promote non-automobile travel. Cities with higher parking costs saw a 2.3-fold increase in public transit passenger miles.

SourceDrexel University·JournalPublic Works Management & Policy·DateMar 24, 2014

One in 10 male, same-sex Craigslist ads seek men who don't identify as gay

A study by Columbia University's Mailman School of Public Health found that men seeking non-gay-identified (NGI) partners on Craigslist tend to prioritize anonymity and masculinity, which may increase the risk of HIV transmission. Only a small percentage of NGI-seeking ads mentioned safe sex or condom use.

SourceColumbia University's Mailman School of Public Health·JournalPsychology of Sexual Orientation and Gender Diversity·DateMar 24, 2014

The fundamentals of facial recognition

A recent Harvard University study using prosopagnosia patients found that face recognition is a distinct cognitive process. Patients with face blindness showed poor performance in recognizing faces, contrasting with their ability to recognize other objects of expertise.

SourceHarvard University·JournalProceedings of the National Academy of Sciences·DateMar 24, 2014

Deletion of FAT10 gene reduces body fat, slows down aging in mice

Researchers at Tufts University have discovered that deleting the FAT10 gene reduces body fat and extends lifespan in mice by 20%, improving insulin sensitivity and protection against type 2 diabetes. The study provides a promising lead for future research into the role of FAT10 in coordinating immunity and metabolism.

SourceTufts University, Health Sciences Campus·JournalProceedings of the National Academy of Sciences·DateMar 24, 2014

Keep calm and don your video glasses

A study found that video glasses effectively distract patients undergoing minimally invasive treatment procedures, such as biopsies and catheter placements. Patients wearing video glasses showed a significant reduction in anxiety levels, with no adverse effects on blood pressure or pain levels.

SourceSociety of Interventional Radiology·JournalJournal of Vascular and Interventional Radiology·DateMar 24, 2014

Researchers take mathematical route to fighting viruses

Researchers at the University of York and University of Leeds have developed a mathematical model that explains the molecular mechanisms behind virus assembly. The discovery opens up possibilities for the development of anti-viral therapies and could help treat diseases such as HIV, Hepatitis B and C, Norovirus, and the Common Cold.

SourceUniversity of York·JournalProceedings of the National Academy of Sciences·DateMar 24, 2014

Ancient Indonesian climate shift linked to glacial cycle

Researchers from Brown University have assembled a 60,000-year record of rainfall in central Indonesia, showing that the region's normally wet climate was interrupted by a severe dry period during peak ice age. This finding provides crucial data for predicting how the region might respond to global warming.

SourceBrown University·JournalProceedings of the National Academy of Sciences·DateMar 24, 2014

Would you believe your hand could turn into marble?

Researchers induce a bodily illusion where participants' hands feel stiffer and heavier, showing the brain can quickly update its perception of body material. This study reveals multisensory integration can alter perceived body properties, which may help explain how tools and prostheses integrate into our body schemas.

SourceBielefeld University·JournalPLOS ONE·DateMar 24, 2014

Mice give ticks a free lunch

White-footed mice are 'super hosts' that transfer disease-causing pathogens to feeding ticks, yet appear indifferent to larval tick infestations. Research found that heavy tick burdens did not reduce mouse survival or overwintering success, and may even enhance their chances of survival.

Oncologists differ widely on offering cancer gene testing, study finds

A study at Dana-Farber Cancer Institute found wide variation in oncologists' attitudes towards offering cancer gene testing, with those having high genomic confidence more likely to prescribe the test. The survey revealed that 42% of doctors approved telling patients about uncertain test results, highlighting concerns about delivering ...

SourceDana-Farber Cancer Institute·JournalJournal of Clinical Oncology·DateMar 24, 2014

New study shows heart abnormalities in fish embryos exposed to Deepwater Horizon oil

A new study has found that exposure to crude oil from the Deepwater Horizon spill can cause serious defects in heart development and function of fish embryos. The research highlights the potential impacts on commercially important pelagic fish populations in the Gulf of Mexico.

SourceUniversity of Miami Rosenstiel School of Marine, Atmospheric, and Earth Science·JournalProceedings of the National Academy of Sciences·DateMar 24, 2014

Scientists find a molecular clue to the complex mystery of auxin signaling in plants

Researchers at Washington University in St. Louis have identified a key protein in the auxin signaling network that may help understand the entire mechanism. The protein's interaction domain allows it to form chains with other proteins, fine-tuning the response of individual cells to auxin and producing detailed patterns on plant leaves.

SourceWashington University in St. Louis·JournalProceedings of the National Academy of Sciences·DateMar 24, 2014

Autophagy in the initial stage is unrelated to the composition of beclin 1 complex

Researchers found that the initial stage of autophagy is not directly related to the composition of the Beclin-1 complex. Instead, other mechanisms are likely involved in inducing autophagy. This study highlights the complexity of autophagy regulation and challenges current understanding of its role in neurodegenerative diseases.

SourceNeural Regeneration Research·JournalNeural Regeneration Research·DateMar 24, 2014

p53 cuts off invading cancer cells

Researchers discovered that p53 acts to prevent cancer cell invasion by initiating a chain of events that ultimately prevents the formation of lamellipodia. This process involves the activation of a mitochondrial protease called Omi, which cleaves actin filaments and suppresses the activity of focal adhesion signaling protein p130Cas.

SourceRockefeller University Press·JournalJournal of Cell Biology·DateMar 24, 2014

From mouse ears to man's?

Researchers at Tel Aviv University have discovered that DNA therapy can preserve inner ear nerve cells in humans with certain types of progressive hearing loss. The study uses a protein growth factor to block degeneration and has important implications for enhancing sound perception with cochlear implants.

SourceAmerican Friends of Tel Aviv University·JournalHearing Research·DateMar 24, 2014

Recovering valuable substances from wastewater

Researchers have developed a technology to recover phosphorus from wastewater using superparamagnetic particles. The particles trap phosphate anions, which can then be removed using magnets, leaving water clear of pollutants. This innovative method has the potential to protect the environment and provide a sustainable raw material source.

New discovery finds missing hormone in birds

A team of researchers from the University of Akron has made a groundbreaking discovery by identifying the missing hormone leptin in birds. Leptin plays a crucial role in regulating body fat storage, metabolism, and appetite, but its presence was unknown in avian species until now.

SourceUniversity of Akron·JournalPLOS ONE·DateMar 24, 2014

Motor learning: Lining up our sights

Neurologists investigate the significance of the vestibular system in directing gaze, finding that patients with vestibular or cerebellar dysfunction have difficulty controlling eye movements. The study suggests that rehabilitation training based on active head movements can enhance gaze shift control and learning to find endpoints.

Hunt for an unidentified electron object

The new framework was used to understand the dynamics of quantized vortices and their interaction with electrons. The researchers discovered a novel mechanism of vortex multiplication, which explains why unidentified electron objects were found only at lower temperatures.

SourceUniversity of Cambridge·JournalProceedings of the National Academy of Sciences·DateMar 24, 2014