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Science News for October 26, 2017


AAAS launches SciLine, new service for journalists to enhance science coverage

The American Association for the Advancement of Science (AAAS) has launched SciLine, a new service connecting reporters with credible scientists to provide evidence-based information on news-worthy topics. This initiative aims to advance quality reporting on science and technology issues, building trust between news outlets and audiences.

The Lancet: Afternoon heart surgery syncs with body's circadian clock and is linked to better outcomes for patients

A study published in The Lancet found that moving heart surgery to the afternoon can reduce the risk of heart damage and major cardiac events. Afternoon surgery was associated with a 50% lower risk of major cardiac events compared to morning surgery, suggesting that synchronization with the body's circadian clock may improve outcomes.

SourceThe Lancet·JournalThe Lancet·DateOct 26, 2017

For older adults, keeping your heart healthy may protect against disability

A study of Chilean adults aged 65 and older found that maintaining ideal cardiovascular health behaviors, such as regular physical activity, a healthy diet, and not smoking, can reduce the risk of disability. The researchers also discovered that having an ideal body mass index (BMI) can lower disability risk, particularly for those wit...

SourceAmerican Geriatrics Society·JournalJournal of the American Geriatrics Society·DateOct 26, 2017

Deep-depletion: A new concept for MOSFETs

Researchers have created a proof of concept for MOSFETs using the deep depletion regime in bulk-boron-doped diamond, increasing hole channel carrier mobility by an order of magnitude. This enables more efficient power electronics and paves the way for fully exploiting diamond's potential in MOSFET applications.

SourceAmerican Institute of Physics·JournalApplied Physics Letters·DateOct 26, 2017

Pregnancy poses no greater risk to breast cancer survivors

A recent study published in the Journal of the National Cancer Institute indicates that pregnancy does not incur a greater risk of relapse for survivors of breast cancer. The study found no significant difference in breast cancer recurrence rates among pregnant and non-pregnant women with a history of ER-positive breast cancer.

SourceOxford University Press USA·JournalJNCI Journal of the National Cancer Institute·DateOct 26, 2017

Researchers use a pump-induced disease to define underlying molecular mechanism

A study published in Journal of General Physiology investigated the functional effects of specific mutations in Na/K pumps found in tumors that induce primary aldosteronism. The researchers found that impaired sodium and potassium transport is a common mechanism behind the pathology, contradicting previous 'gain-of-function' proposals.

SourceTexas Tech University Health Sciences Center·JournalJournal of General Physiology·DateOct 26, 2017

Mending hearts in three dimensions

A Kyoto-Osaka team uses hiPSCs to develop biodegradable aligned nanofibers as a scaffold for culturing cardiomyocytes, forming robust and functional cardiac tissue-like constructs. These CTLCs show excellent operability leading to favorable heart function recovery in injured rat hearts.

SourceKyoto University·JournalStem Cell Reports·DateOct 26, 2017

Doctors need cultural training

A Norwegian study reveals that general practitioners lack cultural competency when dealing with patients from diverse backgrounds. Researchers emphasize the need for mandatory cultural training in medical education to address these gaps.

SourceThe University of Bergen·JournalFamily Practice·DateOct 26, 2017

Mutation in fallopian tube lesions may help catch ovarian cancer years earlier

Researchers discovered that tumor cells in the fallopian tubes of women at high-risk for ovarian cancer can be detected years before they develop into the disease, providing a potential window of time for early detection and intervention. The study identified TP53 gene mutations as an early indicator of ovarian cancer development.

SourceUniversity of Pennsylvania School of Medicine·JournalNature Communications·DateOct 26, 2017

A new weapon against malaria

Researchers have identified two proteases essential for the malaria parasite's survival and dissemination, as well as a molecule capable of inhibiting them. This discovery could lead to the development of drugs blocking not only the parasite's development in humans but also its transmission to mosquitoes.

SourceUniversité de Genève·JournalScience·DateOct 26, 2017

Sidetracked by a donut?

A recent study published in Psychonomic Bulletin & Review found that calorie-dense foods are more distracting than low-calorie foods or everyday objects, even if they are not related to food. The researchers used a distraction paradigm to test how participants' thoughts and cognition relate to their eating habits.

SourceSpringer·JournalPsychonomic Bulletin & Review·DateOct 26, 2017

Outpatient antibiotics raise risk for acquiring C. difficile infection in the community

A new study confirms outpatient antibiotic use is a primary risk factor for acquiring C. difficile infection in the community, and recent emergency department visits may also pose a risk. The study found that patients with community-associated C. difficile infections were more likely to have prior health care visits and taken antibiotics.

SourceInfectious Diseases Society of America·JournalOpen Forum Infectious Diseases·DateOct 26, 2017

UBC researcher prescribes specific exercise dosage for those with spinal cord injury

Researchers developed exercise recommendations for adults with spinal cord injuries, including moderate to vigorous intensity aerobic exercise and strengthening exercises. The guidelines aim to improve fitness and reduce mortality rates among people with SCI, addressing leading causes of death such as cardiovascular disease and obesity.

How much does life weigh?

Researchers have created a novel cell scale that enables measuring the mass of living cells with high resolution and monitoring their weight changes over time. This allows tracking of fluctuations during the cell cycle, substance influence on cell mass, and viral infection effects.

SourceETH Zurich·JournalNature·DateOct 26, 2017

Bacteria have a sense of touch

Researchers discovered bacteria possess a 'sense of touch' enabling them to recognize surfaces and induce adhesive production in response to mechanical stimulation. This mechanism helps pathogens colonize host cells, making it crucial for understanding infectious diseases.

SourceUniversity of Basel·JournalScience·DateOct 26, 2017

Hubble discovers 'wobbling galaxies'

Astronomers analyzed 10 galaxy clusters using Hubble data and found their brightest cluster galaxies wobble around the center of mass, inconsistent with current dark matter models. This result may indicate new physics is at work, requiring a reevaluation of fundamental physics to solve the mystery of dark matter.

SourceESA/Hubble Information Centre·JournalMonthly Notices of the Royal Astronomical Society·DateOct 26, 2017

Researchers identify a test to target cancer drug

A new test targeting cancer drug effectiveness has been identified using protein HER3 levels, helping doctors tailor treatment for patients. The test shows that patients with high HER3 levels benefit from the drug, while those with low levels experience no effect, providing a more personalized approach to bowel cancer treatment.

SourceUniversity of Leeds·JournalJAMA Oncology·DateOct 26, 2017

New way to treat cholesterol may be on the horizon

Researchers at Houston Methodist discovered a new pathway in cholesterol elimination, revealing that it is eliminated from the body in just two minutes, challenging the current 40-year model. This finding has significant implications for developing new drugs to lower cholesterol and improving cardiovascular health.

Climate change may slowly starve bamboo lemurs

A study published in Current Biology suggests that climate change may force bamboo lemurs to eat culm for longer periods, leading to potential starvation. The researchers analyzed the lemurs' feeding habits and found that a short dry season has been crucial to their survival in the past.

SourceCell Press·JournalCurrent Biology·DateOct 26, 2017