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Monday, November 12, 2012

ScienceDaily: Top News

ScienceDaily: Top News


New form of brain plasticity: How social isolation disrupts myelin production

Posted: 11 Nov 2012 12:39 PM PST

Animals that are socially isolated for prolonged periods make less myelin in the region of the brain responsible for complex emotional and cognitive behavior, researchers report.

Schizophrenia genetic networks identified; Connection to autism found

Posted: 11 Nov 2012 12:39 PM PST

Although schizophrenia is highly genetic in origin, the genes involved in the disorder have been difficult to identify. In the past few years, researchers have implicated several genes, but it is unclear how they act to produce the disorder. A new study identifies affected gene networks and provides insight into the molecular causes of the disease.

Making a better invisibility cloak

Posted: 11 Nov 2012 12:39 PM PST

The first functional "cloaking" device reported by electrical engineers in 2006 worked like a charm, but it wasn't perfect. Now a member of the same laboratory has developed a new design that ties up one of the major loose ends from the original device.

Cultural dimensions of climate change are underestimated, overlooked and misunderstood

Posted: 11 Nov 2012 12:39 PM PST

The impact of climate change on many aspects of cultural life for people all over the world is not being sufficiently accounted for by scientists and policy-makers. Cultural factors are key to making climate change real to people and to motivating their responses, new research suggests.

New method of gene identification discovered

Posted: 11 Nov 2012 12:39 PM PST

Scientists studying the genes and proteins of human cells infected with a common cold virus have identified a new gene identification technique that could increase the genetic information we hold on animals by around 70 to 80 per cent.

Why Antarctic sea ice cover has increased under the effects of climate change

Posted: 11 Nov 2012 12:38 PM PST

Scientists have the first direct evidence that marked changes to Antarctic sea ice drift have occurred over the last 20 years, in response to changing winds. They can now explain why, unlike the dramatic losses reported in the Arctic, the Antarctic sea ice cover has increased under the effects of climate change.

Recipe for 'supercharging' atoms with X-ray laser

Posted: 11 Nov 2012 12:38 PM PST

Researchers using a free-electron X-ray laser have found a way to strip most of the electrons from xenon atoms, creating a "supercharged," strongly positive state at energies previously thought too low.

Mutations in genes that modify DNA packaging result in facioscapulohumeral muscular dystrophy (FSHD)

Posted: 11 Nov 2012 12:38 PM PST

A worldwide group of collaborators has found that the way DNA is packaged in people with this form of muscular dystrophy may be responsible for their disease. A genetic error allows the DNA wrapping to relax and thereby allow a muscle-toxic substance to be produced. The mutation occurs in a gene know for its silencing effects.

New way in which plants control flower production

Posted: 11 Nov 2012 12:38 PM PST

The timing of flowering in plants is critical. It can have profound effects on flower, fruit, and seed production, and consequently agricultural yields. This process is known to depend on daylight and temperature cues. However, biologists now reveal there is a second, previously unknown, mechanism that controls flowering.

'Groundwater inundation' doubles previous predictions of flooding with future sea level rise

Posted: 11 Nov 2012 12:38 PM PST

A new study by researchers in Hawaii shows that besides marine inundation (flooding), low-lying coastal areas may also be vulnerable to "groundwater inundation," a factor largely unrecognized in earlier predictions on the effects of sea level rise.

Touch-sensitive plastic skin heals itself

Posted: 11 Nov 2012 12:37 PM PST

Chemists and engineers have created the first synthetic material that is both sensitive to touch and capable of healing itself quickly and repeatedly at room temperature. The advance could lead to smarter prosthetics or more resilient personal electronics that repair themselves.

Using rust and water to store solar energy as hydrogen

Posted: 11 Nov 2012 12:37 PM PST

How can solar energy be stored so that it can be available any time, day or night, when the sun shining or not? Scientists are developing a technology that can transform light energy into a clean fuel that has a neutral carbon footprint: hydrogen. The basic ingredients of the recipe are water and metal oxides, such as iron oxide, better known as rust.

Gene variations linked to lung cancer susceptibility in Asian women

Posted: 11 Nov 2012 12:37 PM PST

An international group of scientists has identified three genetic regions that predispose Asian women who have never smoked to lung cancer. The finding provides further evidence that risk of lung cancer among never-smokers, especially Asian women, may be associated with certain unique inherited genetic characteristics that distinguishes it from lung cancer in smokers.

Detection, analysis of 'cell dust' may allow diagnosis, monitoring of brain cancer

Posted: 11 Nov 2012 12:37 PM PST

A novel miniature diagnostic platform using nuclear magnetic resonance technology is capable of detecting minuscule cell particles known as microvesicles in a drop of blood. Microvesicles shed by cancer cells are even more numerous than those released by normal cells, so detecting them could prove a simple means for diagnosing cancer.

Climate change threatens giant pandas' bamboo buffet -- and survival

Posted: 11 Nov 2012 12:37 PM PST

China's endangered wild pandas may need new dinner reservations – and quickly – based on models that indicate climate change may kill off swaths of bamboo that pandas need to survive.

New research: Limiting carbs to dinner-time increases satiety, reduces risk for diabetes and cardiovascular disease

Posted: 11 Nov 2012 12:36 PM PST

An experimental diet with carbohydrates eaten mostly at dinner could benefit people suffering from severe and morbid obesity, according to a new study by researchers in Israel.

Statins have potential to treat an autoimmune clotting disorder called antiphospholipid syndrome

Posted: 11 Nov 2012 12:36 PM PST

New research suggests that statins, traditionally used for cholesterol lowering, could be used in the management of individuals who are at risk for developing clotting because they have autoimmune antiphospholipid antibodies (aPL).

Autoimmune disease linked to pregnancy loss, stroke more often than you’d expect

Posted: 11 Nov 2012 12:36 PM PST

A new study provides the first estimates of the prevalence of antiphospholipid antibodies in patients suffering from pregnancy loss, stroke, myocardial infarction and deep vein thrombosis.

Expensive arthritis treatment no better than steroid therapy, study finds

Posted: 11 Nov 2012 12:36 PM PST

A randomized, double-blind clinical trial has revealed that corticosteroids are more effective than the more expensive treatment in providing pain relief to patients with thumb arthritis.

Weekly soft drink consumption bubbles up knee osteoarthritis; especially in men

Posted: 11 Nov 2012 12:35 PM PST

Sugary soft drink consumption contributes not only to weight gain, but also may play a role in the progression of knee osteoarthritis, especially in men, according to new research findings.

Extra weight linked to rheumatoid arthritis risk in women

Posted: 11 Nov 2012 12:35 PM PST

Being overweight is linked to a higher risk of rheumatoid arthritis in women, according to new research findings.

Bone medication may save knees

Posted: 11 Nov 2012 12:34 PM PST

According to new research, a daily dose of strontium ranelate -- a medication prescribed for osteoporosis -- may delay knee osteoarthritis progression. The study also revealed that taking strontium ranelate may improve knee pain, reduce joint damage and the need for surgery.

Biologics may prevent premature death in people with rheumatoid arthritis, study suggests

Posted: 11 Nov 2012 12:34 PM PST

According to new research, treatment with biologic medications may reduce the risk of premature death in people with rheumatoid arthritis.

Fibromyalgia and the brain: New clues reveal how pain and therapies are processed

Posted: 11 Nov 2012 12:34 PM PST

According to new research, pain experienced by people with fibromyalgia may be caused by a problem with the way pain stimuli are processed in the brain. Abnormal pain signal processing may also be related to a lack of responsiveness to opioids, a common class of pain relievers.

Newborn neurons -- even in the adult aging brain -- are critical for memory

Posted: 11 Nov 2012 12:29 PM PST

Newborn neurons in the adult hippocampus are critical for memory retrieval, according to a new study.

Game changer for arthritis and anti-fibrosis drugs

Posted: 11 Nov 2012 12:29 PM PST

Medical researchers have identified a way to treat inflammation while potentially minimizing a serious side effect of current medications: the increased risk for infection.

It's not just what you eat, but when you eat it: Link between fat cell and brain clock molecules shown

Posted: 11 Nov 2012 12:29 PM PST

Fat cells store excess energy and signal these levels to the brain. Deletion of the clock gene Arntl, also known as Bmal1, in fat cells, causes mice to become obese, with a shift in the timing of when this nocturnal species normally eats. These findings shed light on the complex causes of obesity in humans.

Better brain implant: Slim electrode cozies up to single neurons

Posted: 11 Nov 2012 12:29 PM PST

A thin, flexible electrode is 10 times smaller than the nearest competition and could make long-term measurements of neural activity practical at last.

Early stress may sensitize girls’ brains for later anxiety

Posted: 11 Nov 2012 12:29 PM PST

High levels of family stress in infancy are linked to differences in everyday brain function and anxiety in teenage girls, according to new results of a long-running population study.

New Australian telescope set to find 700,000 galaxies

Posted: 09 Nov 2012 05:40 AM PST

Australia's newest radio telescope is predicted to find an unprecedented 700,000 new galaxies, say scientists planning for CSIRO's next-generation Australian Square Kilometre Array Pathfinder (ASKAP). Australian researchers have combined computer simulations with ASKAP's specifications to predict the new telescope's extraordinary capabilities.

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