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Thursday, November 20, 2014

ScienceDaily: Top Health News

ScienceDaily: Top Health News

Digging for answers: Gender inequality in archeology?

Posted: 19 Nov 2014 02:50 PM PST

On an archaeology field trip in New Mexico an undergraduate noticed something that struck her as an odd gender imbalance: The professor leading the dig was a man, while the graduate assistant and all but two of the 14 undergrads were women.

Delivery of stem cells into heart muscle after heart attack may enhance cardiac repair and reverse injury

Posted: 19 Nov 2014 02:47 PM PST

Delivering stem cell factor directly into damaged heart muscle after a heart attack may help repair and regenerate injured tissue. A novel SCF gene transfer delivery system induced the recruitment and expansion of adult c-Kit positive (cKit+) cardiac stem cells to injury sites that reversed heart attack damage in a pre-clinical model. In addition, the gene therapy improved cardiac function, decreased heart muscle cell death, increased regeneration of heart tissue blood vessels, and reduced the formation of heart tissue scarring.

Social sensing game detects classroom bullies

Posted: 19 Nov 2014 12:17 PM PST

Researchers have developed a computer game that can detect classroom bullies, victims and bystanders. The game's behavior analyses effectively identify classroom bullies, even revealing peer aggression that goes undetected by traditional research methods, the researchers say.

Unique sense of 'touch' gives a prolific bacterium its ability to infect anything

Posted: 19 Nov 2014 12:17 PM PST

One of the world's most prolific bacteria, Pseudomonas aeruginosa, manages to afflict humans, animals and even plants by way of a mechanism not before seen in any infectious microorganism -- a sense of touch.

New view of mouse genome finds many similarities, striking differences with human genome

Posted: 19 Nov 2014 10:27 AM PST

Looking across the genomes of humans and mice, scientists have found that, in general, the systems that are used to control gene activity in both species have many similarities, along with crucial differences. The results may offer insights into gene regulation and other systems important to mammalian biology, and provide new information to determine when the mouse is an appropriate model to study human biology and disease. They may also help explain its limitations.

Business culture in banking industry favors dishonest behavior

Posted: 19 Nov 2014 10:25 AM PST

In the past years, there have often been cases of fraud in the banking industry, which have led to a considerable loss of image for banks. Are bank employees by nature less honest people? Or does the business culture in the banking sector favor dishonest behavior? New findings indicate that the business culture in the banking sector implicitly favors dishonest behavior.

Natural Gut Viruses Join Bacterial Cousins in Maintaining Health and Fighting Infections

Posted: 19 Nov 2014 10:24 AM PST

Microbiologists say they have what may be the first strong evidence that the natural presence of viruses in the gut — or what they call the 'virome' — plays a health-maintenance and infection-fighting role similar to that of the intestinal bacteria that dwell there and make up the "microbiome."

A new test measures analytical thinking linked to depression, fueling the idea that depression may be a form of adaptation

Posted: 19 Nov 2014 09:51 AM PST

Researchers studying the roots of depression have developed a test to measure analytical thinking and rumination, that are hallmarks of the condition, leading them closer to the idea that depression may actually be an adaptation meant to help people cope with complex problems such as chronic illnesses or marriage breakups.

Biochemists build largest synthetic molecular 'cage' ever

Posted: 19 Nov 2014 07:20 AM PST

Biochemists have created the largest protein ever that self-assembles into a molecular cage. Their designed protein, which does not exist in nature, is hundreds of times smaller than a human cell. The research could lead to 'synthetic vaccines' that protect people from the flu, HIV and perhaps other diseases. It could also lead to new methods of delivering pharmaceuticals inside of cells and the creation of new nano-scale materials.

Improving memory by suppressing a molecule that links aging to Alzheimer's disease

Posted: 19 Nov 2014 07:18 AM PST

Researchers find a way to improve memory by suppressing a molecule that links aging to Alzheimer's disease.

Gifted men and women define success differently, 40-year study finds

Posted: 19 Nov 2014 07:17 AM PST

Researchers spent four decades studying a group of mathematically talented adolescents, finding that by mid-life they were extraordinarily accomplished and enjoyed a high level of life satisfaction. Gender, however, played a significant role in how they pursued—and defined—career, family and success. Intellectually gifted women tracked for 40 years were found to earn less money, be less present in STEM fields, and work fewer hours than their male counterparts. Despite that, they expressed a high level of personal satisfaction and sense of achievement, defining success more broadly than men to include family and community service. These observations come from the most recent round of results from the Study of Mathematically Precocious Youth (SMPY), the largest longitudinal research project of its kind. The results were posted this week to Psychological Science.

Police face higher risk of sudden cardiac death during stressful duties

Posted: 19 Nov 2014 05:52 AM PST

Police officers in the United States face roughly 30 to 70 times higher risk of sudden cardiac death when they're involved in stressful situations -- suspect restraints, altercations, or chases -- than when they're involved in routine or non-emergency activities.

Many older brains have plasticity, but in a different place

Posted: 19 Nov 2014 05:49 AM PST

Brain scientists have long believed that older people have less of the neural flexibility, or plasticity, required to learn new things. A new study shows that older people learned a visual task just as well as younger ones, but the seniors who showed a strong degree of learning exhibited plasticity in a different part of the brain than younger learners did.

High heels may enhance a man’s instinct to be helpful

Posted: 19 Nov 2014 05:47 AM PST

A French study is the first to investigate the effect of a woman's shoe heels on men's behavior. If it's help a woman needs, maybe she should wear high heels. That's the message from researchers after they observed how helpful men are towards women in high heels versus those wearing flat, sensible shoes.

It pays to have an eye for emotions

Posted: 19 Nov 2014 05:47 AM PST

Attending to and caring about the emotions of employees and colleagues – that's for wimps, not for tough businesspeople and efficient performers, right? Wrong! An extensive international study has now shown: The "ability to recognize emotions" affects income.

Scientists prevent memory problems caused by sleep deprivation

Posted: 18 Nov 2014 03:24 PM PST

Scientists have found that a particular set of cells in a small region of the brain are responsible for memory problems after sleep loss. By selectively increasing levels of a signaling molecule in these cells, the researchers prevented mice from having memory deficits.

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