Monday, June 24, 2013

FeedaMail: ScienceDaily: Most Popular News

feedamail.com ScienceDaily: Most Popular News

Unexpected discovery of the ways cells move could boost understanding of complex diseases

A new discovery about how cells move may provide scientists with crucial information about disease mechanisms such as the spread of cancer or the constriction of airways caused by asthma. Scientists found that epithelial cells move in a group, propelled by forces both from within and from nearby cells, to fill any unfilled spaces they encounter.

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The genome's 3-D structure shapes how genes are expressed

Scientists bring new insights to our understanding of the three-dimensional structure of the genome, one of the biggest challenges currently facing the fields of genomics and genetics.

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Getting to grips with migraine: Researchers identify some of the biological roots of migraine from large-scale genome study

Migraine is an extremely difficult disorder to study. Between episodes, the patient is basically healthy, making the underlying pathology very difficult to uncover. In the largest migraine study, an international team of researchers have identified genetic regions linked to the onset and susceptibility of migraine.

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New player is critical to unleashing T cells against disease

A major study provides new revelations about the intricate pathways involved in turning on T cells, the body's most important disease-fighting cells. A certain type of protein, called septins, play an essential role in T cell activation.

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Sugar solution makes tissues see-through

Japanese researchers have developed a new sugar and water-based solution that turns tissues transparent in just three days, without disrupting the shape and chemical nature of the samples. Combined with fluorescence microscopy, this technique enabled them to obtain detailed images of a mouse brain at an unprecedented resolution.

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A bit of good luck: A new species of burying beetle from the Solomon Islands Archipelago

Scientists discovered a new species of burying beetle from the Solomon Islands Archipelago. Nicrophorus efferens was discovered when one of the authors, Tonya Mousseau, decided to look through the local museum collections during a holiday in Hawaii. The lucky find is a type of burying beetle, a group of beetles famous among naturalists for their peculiar reproductive habits.

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Finding Murray's magic: Ability to manage goals makes an athlete successful

Research suggests that it is Andy Murray's ability to manage his goals, as well as his skill, determination and motivation that makes him such a successful athlete. Murray dropped out of the French Open after a back injury this year, missing out on his goal of playing in four grand slam finals in a row. But this decision has allowed him to recuperate in time for Wimbledon this month. According to new research, athletes who recognize early when a goal is unattainable and switch their focus to other objectives are the most successful at achieving their main career goals.

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Surprise species at risk from climate change

Most species at greatest risk from climate change are not currently conservation priorities, according to a new study that has introduced a pioneering method to assess the vulnerability of species to climate change.

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Mystery of the gigantic storm on Saturn

We now understand the nature of the giant storms on Saturn. Through the analysis of images as well as the computer models of the storms and the examination of the clouds therein, astronomers have managed to explain the behavior of these storms for the very first time.

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Robo-pets may contribute to quality of life for those with dementia

Robotic animals can help to improve the quality of life for people with dementia, according to new research.

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Plants do sums to get through the night

Using fundamental processes instead of brain cells, plants measure the time until dawn and divide that by their stored starch levels.

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When AIDS viruses are transmitted despite treatment

While antiretroviral drugs offer an efficient means of preventing the replication of HIV in the blood, shedding of HIV may occur in semen, so that other persons can become infected during unprotected sexual intercourse. This occurs in particular if the male genital tract also has other viral infections.

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Powerful gene-editing tool appears to cause off-target mutations in human cells

Scientists have found a significant limitation to the use of CRISPR-Cas RGNs, production of unwanted DNA mutations at sites other than the desired target, which indicates a need to improve the specificity of the nucleases.

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Excited, but cold: Scientists unveil the secret of a reaction for prebiotic synthesis of organic matter

How is it that a complex organism evolves from a pile of dead matter? How can lifeless materials become organic molecules that are the bricks of animals and plants? Scientists have been trying to answer these questions for ages. Researchers have now disclosed the secret of a reaction that has to do with the synthesis of complex organic matter before the origin of life.

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Pleasure response from chocolate: You can see it in the eyes

The brain's pleasure response to tasting food can be measured through the eyes using a common, low-cost ophthalmological tool, according to a new study.

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Uncertainty over the benefits of feeding birds in winter

Scientists have found that feeding wild blue tits in winter resulted in less successful breeding during the following spring.

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Targeted viral therapy destroys breast cancer stem cells in preclinical experiments

A promising new treatment for breast cancer has been shown in cell culture and in animal models to selectively kill cancer stem cells at the original tumor site and in distant metastases with no toxic effects on healthy cells, including normal stem cells. Cancer stem cells are critical to a cancer's ability to recur following conventional chemotherapies and radiation therapy because they can quickly multiply and establish new tumors that are often therapy resistant.

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Tick-caused bobcat fever can be deadly to domestic cats

Veterinarians are warning pet owners to watch out for ticks carrying a disease that could kill cats.

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Promising new device detects disease with drop of blood

Scientists are creating a prototype lab-on-a-chip that would someday enable a physician to detect disease or virus from just one drop of liquid, including blood.

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In multiple sclerosis animal study, absence of gene leads to earlier, more severe disease

Scientists are reporting that they have identified the likely genetic mechanism that causes some patients with multiple sclerosis (MS) to quickly progress to a debilitating stage of the disease while other patients progress much more slowly.

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Precise thickness measurement of soft materials by means of contact stylus instruments

In microsystems, metallic components are increasingly replaced by components made of inexpensive polymers. As polymers yield when they are subjected to pressure, the layer thicknesses cannot be measured with sufficient accuracy by means of conventional contact stylus instruments. But precision is of decisive importance in microsystem technology. Now, industrial enterprises which measure the thickness of soft polymer layers on hard substrates will be able to correct their measurement results by means of a formula.

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Billion-pixel view of Mars comes from Curiosity rover

A billion-pixel view from the surface of Mars, from NASA's Mars rover Curiosity, offers armchair explorers a way to examine one part of the Red Planet in great detail.

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An expansive physical setting increases a person's likelihood of dishonest behavior

A new study reveals that expansive physical settings can cause individuals to feel more powerful, and in turn these feelings of power can elicit more dishonest behavior such as stealing, cheating, and even traffic violations.

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Ailanthus tree's status as invasive species offers lesson in human interaction

An exotic tree species that changed from prized possession to forest management nightmare serves as a lesson in the unpredictability of non-native species mixing with human interactions, according to researchers.

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Mechanical bases for the emergence of undulatory swimmers

How do fish swim? It is a simple question, but there is no simple answer. Researchers have now gleaned insight into the mechanical properties that allow them to perform their seemingly complex movements.

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'Singing' rats show hope for older humans with age-related voice problems

New research from speech and hearing science professors shows training rats to "sing" could provide a model for voice therapy that will, in turn, help aging humans with vocal problems.

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'Nerdy' mold needs breaking to recruit women into computer science

The 'computer nerd' is a well-known stereotype. While this stereotype is inaccurate, it still has a chilling effect on women pursuing a qualification in computer science, according to a new article. However, when this image is downplayed in the print media, women express more interest in further education in computer science.

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Reading DNA, backward and forward: Biologists reveal how cells control the direction in which the genome is read

Biologists have discovered a mechanism that allows cells to read their own DNA in the correct direction and prevents them from copying most of the so-called "junk DNA" that makes up long stretches of our genome.

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Messier 61 looks straight into Hubble's camera

The NASA/ESA Hubble Space Telescope has captured a new image of nearby spiral galaxy Messier 61, also known as NGC 4303. The galaxy, located only 55 million light-years away from Earth, is roughly the size of the Milky Way, with a diameter of around 100,000 light-years.

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New 'biowire' technology matures human heart by mimicking fetal heartrate

A new method of maturing human heart cells that simulates the natural growth environment of heart cells while applying electrical pulses to mimic the heart rate of fetal humans has led researchers to an electrifying step forward for cardiac research.

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Rare pregnancy condition programs babies to become overweight in later life

Babies born to mothers who suffer from a rare metabolic complication during pregnancy are programmed to be overweight, according to a study part-funded by the Wellcome Trust.

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Brain cancer: Hunger for amino acids makes it more aggressive

An enzyme that facilitates the breakdown of specific amino acids makes brain cancers particularly aggressive. Scientists have discovered this in an attempt to find new targets for therapies against this dangerous disease.

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Potential treatment strategies for multiple sclerosis

Myelin, the fatty coating that protects neurons, is destroyed in diseases such as multiple sclerosis. Researchers have been striving to determine whether oligodendrocytes, cells that produce myelin, can be stimulated to make new myelin. Using live imaging in zebrafish to track oligodendrocytes, researchers discovered that oligodendrocytes coat neurons with myelin for only five hours after they are born. If the findings hold true in humans, they could lead to new treatment strategies for multiple sclerosis.

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Second largest kidney exchange in history

Earlier this month, the Hospital of the University of Pennsylvania and the National Kidney Registry, in partnership with 18 transplant centers across the country, successfully completed the second largest kidney exchange in history and the largest to be concluded in under 40 days. Dubbed Chain 221, the swap involved 56 participants (28 donors and 28 recipients). Four patients at Penn Medicine, including two long-lost grade-school friends, participated in the chain – two receiving new, healthy kidneys, and two donating their own kidneys to other recipients in the chain.

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A valve inside a valve: A new heart valve can be implanted in people suffering with adult congenital heart disease without open heart surgery

A new heart valve that can be implanted inside an existing valve will help adults with congenital heart disease avoid open heart surgeries.

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Helping RNA escape from cells' recycling process could make it easier to shut off disease-causing genes

Helping RNA escape from cells' recycling process could make it easier to shut off disease-causing genes, says a new study.

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Migrating animals add new depth to how the ocean 'breathes'

Animals ranging from plankton to small fish consume vast amounts of what little oxygen is available in the deep ocean, and may reveal a crucial and unappreciated role that animals have in ocean chemistry on a global scale.

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Turtles have fingerprints? New genetic technique reveals paternity and more

For 220 million years they have roamed the seas, denizens of the bustling coral reef and the vast open ocean. Each year, some emerge from the pounding surf onto moonlit beaches to lay their eggs. Throughout human history, we have revered them, used them, and worked to protect them, but we have only begun to understand these ancient, iconic creatures. Now, with all five of the sea turtle species in the U.S. threatened or endangered, knowledge is more crucial than ever.

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Vegetation on Earth: Stunning satellite imagery depicting vegetation around the world

Although 75 percent of the planet is an ocean of blue, the remaining 25 percent of Earth's surface is a dynamic green. Data from the Visible-Infrared Imager/Radiometer Suite (VIIRS) instrument on board the NASA/NOAA Suomi NPP satellite is able to detect these subtle differences in greenness, and is sending extraordinary images back to Earth giving us a clearer picture of vegetation around the world.

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Tightrope over gorge at Grand Canyon: Nik Wallenda's 'tricks' are incredible balance and arm muscle endurance

Nik Wallenda, who completed a 1,400-foot tightrope walk over a river gorge near the Grand Canyon on live television is not super-human despite his successful feat, according to experts.

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Molecule that reduces fats in blood identified

Researchers have found that a regulatory RNA molecule interferes with the production of lipoproteins and, in a mouse model, reduces hyperlipidemia and atherosclerosis.

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