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Wednesday, May 14, 2014

ScienceDaily: Top Health News

ScienceDaily: Top Health News


Primates and patience: Evolutionary roots of self control

Posted: 13 May 2014 05:46 PM PDT

Some primate species will wait more than two minutes if they know they will get a larger serving of food -- while others are unable to wait more than a few seconds. A new study probes the evolutionary reasons for the difference.

Role of calcium in familial Alzheimer's disease clarified, pointing to new therapeutics

Posted: 13 May 2014 02:52 PM PDT

Mutations in two presenilin proteins associated with familial Alzheimer's disease disrupt the flow of calcium ions within neurons. Researchers have found that suppressing the hyperactivity of the calcium channels alleviated FAD-like symptoms in mice models of the disease. These new observations suggest that approaches based on modulating calcium signaling could be explored for new AD therapies.

Pretreatment snack improves uptake of schistosomiasis treatment in schoolchildren

Posted: 13 May 2014 02:52 PM PDT

Provision of a snack before mass treatment of schistosomiasis with praziquantel leads to increased uptake of treatment in school-aged children in Uganda, according to a new study. Scientists found that 93.9 percent of children reported taking praziquantel in schools that offered a snack before treatment compared with 78.7 percent of children in schools that did not offer a snack.

Human learning altered by electrical stimulation of dopamine neurons

Posted: 13 May 2014 02:50 PM PDT

Stimulation of a certain population of neurons within the brain can alter the learning process, according to a team of neuroscientists and neurosurgeons. A new report describes for the first time that human learning can be modified by stimulation of dopamine-containing neurons in a deep brain structure known as the substantia nigra.

Novel protein fragments may protect against Alzheimer's

Posted: 13 May 2014 12:29 PM PDT

Alzheimer's research has centered on trying to understand the protective or regenerative properties of brain cells as an avenue for treating the widespread disease. Now a researcher has discovered novel protein fragments that have proven protective properties for cognitive functioning. Her findings have the potential to serve as a pipeline for new drug candidates to treat the disease.

Strategies that reduce early hospital readmissions

Posted: 13 May 2014 12:29 PM PDT

30-day readmissions can be reduced by almost 20 percent when specific efforts are taken to prevent them, a review has found. Key among these are interventions to help patients deal with the work passed on to them at discharge. "Effective approaches often are multifaceted and proactively seek to understand the complete patient context, often including in-person visits to the patient's home after discharge," says the lead author.

Get it over with: People choose more difficult tasks to get jobs done more quickly

Posted: 13 May 2014 11:21 AM PDT

Putting off tasks until later, or procrastination, is a common phenomenon -- but new research suggests that pre-crastination -- hurrying to complete a task as soon as possible -- may also be common. The new findings suggest that people often opt to begin a task as soon as possible just to get it off their plate, even if they have to expend more physical effort to do so.

Stem cell technology points to early indicators of schizophrenia

Posted: 13 May 2014 11:20 AM PDT

Using new stem cell technology, scientists have shown that neurons generated from the skin cells of people with schizophrenia behave strangely in early developmental stages, providing a hint as to ways to detect and potentially treat the disease early. "This study aims to investigate the earliest detectable changes in the brain that lead to schizophrenia," says one researcher. "We were surprised at how early in the developmental process that defects in neural function could be detected."

Preschool teacher depression linked to behavioral problems in children: Unhealthy classroom climate is contributing factor

Posted: 13 May 2014 11:20 AM PDT

Depression in preschool teachers is associated with behavioral problems ranging from aggression to sadness in children under the teachers' care, new research suggests.

Cause of many preterm births discovered: Premature aging of placenta from oxidative stress

Posted: 13 May 2014 10:27 AM PDT

A new study is the first to show that premature aging of the placenta due to oxidative stress is the cause of many preterm births.

New implanted devices may reshape medicine: Researchers create transistors that wrap around tissues

Posted: 13 May 2014 10:27 AM PDT

Scientists have create flexible transistors that can grip large tissues, nerves and blood vessels without losing their electronic properties. These biologically adaptive, flexible transistors might one day help doctors learn more about what is happening inside the body, and stimulate the body for treatments.

Letting it go: Take responsibility, make amends, forgive yourself

Posted: 13 May 2014 10:26 AM PDT

Forgiving ourselves for hurting another is easier if we first make amends, giving our inner selves a 'moral OK,' according to research. The study is significant because previous studies show that inability to self-forgive can be a factor in depression, anxiety and weakened immunity.

Achieving patient-centered care across the spectrum

Posted: 13 May 2014 10:26 AM PDT

Providing patient-centered care consistently in clinical practice requires practitioners who are able to recognize that different clinical situations require different approaches and are skilled enough to adapt. Researchers note that practitioners could use or integrate two methods: shared decision making and motivational interviewing when discussing options for treatment with patients.

Complex interplay between alcohol, social behavior illuminated by fish study

Posted: 13 May 2014 10:26 AM PDT

Research is helping unravel the complex interplay between alcohol and social behavior. In what may be the first experiment to allow ethanol-exposed and untreated zebrafish to swim freely together, those exposed to certain alcohol concentrations nearly doubled their swimming speeds when in a group --suggesting that the presence of peers substantially impacts social behavior. Most remarkably, unexposed fish modulated their behavior in the presence of a shoalmate exposed to alcohol.

Distance influences accuracy of eyewitness IDs

Posted: 13 May 2014 09:16 AM PDT

A new study has used a controlled outside setting and actual people to test eyewitness accuracy across a variety of distances. Eyewitness accuracy declines steadily and quite measuredly as the distance increases. Additionally, a good deal of guess work or so-called "false alarms" also comes into play as the distance increases. These findings have implications for the trustworthiness of eyewitness accounts that are used to solve criminal cases.

Molecule blocks cancer growth in mice: New drug candidate disrupts key interaction of two proteins by mimicking one to trick the other

Posted: 13 May 2014 08:36 AM PDT

Scientists have developed a small molecule that interferes with cancer progression with minimal side effects. The new cancer-fighting drug prevents two critical proteins from interacting by mimicking the surface topography of one protein -- like wearing a mask -- which tricks the other protein into binding with it.

Forgiving a wrong may actually make it easier to forget

Posted: 13 May 2014 08:36 AM PDT

We're often told to 'forgive and forget' the wrongs that we suffer -- it turns out that there may be some scientific truth behind the common saying. A new study shows that the details of a transgression are more susceptible to forgetting when that transgression has been forgiven.

MEMS nanoinjector for genetic modification of cells

Posted: 13 May 2014 08:32 AM PDT

The ability to transfer a gene or DNA sequence from one animal into the genome of another plays a critical role in a wide range of medical research—including cancer, Alzheimer's disease, and diabetes. But the traditional method of transferring genetic material into a new cell, called "microinjection," has a serious downside. It involves using a small glass pipette to pump a solution containing DNA into the nucleus of an egg cell, but the extra fluid can cause the cell to swell and destroy it -- resulting in a 25 to 40 percent cell death rate.

Dangerous nitrogen pollution could be halved

Posted: 13 May 2014 06:25 AM PDT

The most important fertilizer for producing food is, at the same time, one of the most important risks for human health: nitrogen. Chemical compounds containing reactive nitrogen are major drivers of air and water pollution worldwide, and hence of diseases like asthma or cancer. If no action is taken, nitrogen pollution could rise by 20 percent by 2050 in a middle-of-the-road scenario, according to a new study.

Humans and companion animals harbor the same types of MRSA infections

Posted: 13 May 2014 06:25 AM PDT

A shared population of methicillin-resistant Staphylococcus aureus bacteria circulates both in humans and companion animals, according to a new study. Researchers also observed that samples from the same veterinary hospitals clustered together genetically, suggesting that as in human hospitals, MRSA can be readily transmitted in veterinary hospital settings.

New agent may enhance effectiveness of radiotherapy

Posted: 13 May 2014 06:23 AM PDT

The potential of a drug to improve the effectiveness of radiotherapy in stopping tumor growth has been demonstrated by scientists. There is increasing interest in using the body's own immune system to attack tumor cells – a strategy that can be very effective without the side effects associated with conventional chemotherapy. Skin cancers, for instance, have been successfully treated using a topical cream, imiquimod, which recruits immune cells through a molecule known as toll-like receptor 7 (TLR7), a protein that recognizes foreign and potentially harmful material.

Obsessive-compulsive disorder questionnaire may give clues to other mental health problems

Posted: 13 May 2014 06:14 AM PDT

A shortened version of a questionnaire used by psychologists to assess risk factors for obsessive-compulsive disorder also may help determine the risk of depression and anxiety, according to a study. Given the brevity of the revised Obsessive Beliefs Questionnaire -- and its potential for patients -- it could become a useful tool for research as well as treatment of patients and intervention for those who are predisposed toward a number of mental health disorders, a researcher notes.

Breakthrough in controlling T cell activation

Posted: 13 May 2014 06:11 AM PDT

The discovery of a crucial mechanism that controls the activation of T cells, a blood cell whose primary job is to fight infection in the body, may enable the development of new drugs to treat autoimmune disease, transplant rejection, and similar disorders in which T cells play a major role.

Multilayer nanofiber face mask helps to combat pollution

Posted: 12 May 2014 11:22 AM PDT

Researchers have developed a ground-breaking filter technology that guards against the finest pollutants in the air. Haze is usually composed of pollutants in the form of tiny suspended particles or fine mists/droplets emitted from vehicles, coal-burning power plants and factories. Continued exposure increases the risk of developing respiratory problems, heart diseases and lung cancer. Can we avoid the unhealthy air?

Try this allergy test: Three little-known facts about indoor allergies

Posted: 12 May 2014 10:48 AM PDT

Outdoor pollen might have you running for cover behind closed windows and doors, but allergists say indoor allergens are just as much trouble. One expert discusses 3 allergy misconceptions that could be making things worse.

Birth by c-section, early antibiotic use put kids at risk for allergic esophagitis

Posted: 12 May 2014 09:41 AM PDT

Children delivered by cesarean section and those given antibiotics during early infancy appear more prone to developing allergic inflammation of the esophagus — the muscular tube that connects the mouth to the stomach — according to results of a study. Eosinophilic esophagitis, or EoE, is an emerging allergic disease, the causes of which remain unclear. While still relatively rare, EoE appears to be on the rise in both children and adults, research shows.

Hospitals recover from recession, some financial issues remain

Posted: 12 May 2014 08:25 AM PDT

The recent economic recession affected hospitals across the nation, regardless of financial status, but following the rebound, financially weak and safety-net hospitals continue to struggle, according to health researchers. "Poor financial outcomes [for hospitals] could lead to poor care," said one expert. "This is an issue that needs attention as health care reform moves forward."

How the brain builds on prior knowledge

Posted: 12 May 2014 07:15 AM PDT

It is easier to learn something new if you can link it to something you already know. A specific part of the brain appears to be involved in this process: the medial prefrontal cortex. These findings further enhance our understanding of the brain mechanisms that underlie effective learning. A researcher added a tip for secondary school students taking their final exams: 'If you don't immediately know the answer to a question, you could first try recalling what you already know about that topic. This might help you to come up with the right answer after all.'

Inactive yeast to preserve aroma of young wines

Posted: 12 May 2014 07:15 AM PDT

The usage of inactive yeast preparations rich in glutathione can preserve the aroma of young wines during their storage, research has shown. The fresh, fruity and floral aroma of young wines (white and rosé) can quickly disappear during their storage because of the oxidation process. Additionally, young wines can change their color due to the formation of polymers producing orange and brown color tones. Apart from the loss of pleasant aromas, this process can produce unpleasant aromas similar to some aged wines.

Young people in developing countries need specially customized suicide prevention programs

Posted: 12 May 2014 07:15 AM PDT

It is vital that both cultural and gender differences are taken into account when drawing up programs aimed at preventing suicide among young people in low- to middle-income countries. "Suicide among young people is a global health problem. There is a lack of knowledge and understanding about the factors that affect the risk of suicide and about the importance of different suicidal expressions in many low and middle-income countries. In order to implement effective preventative measures it is necessary to study the differences in suicidal expressions between different countries," says the author.

ScienceDaily: Living Well News

ScienceDaily: Living Well News


Get it over with: People choose more difficult tasks to get jobs done more quickly

Posted: 13 May 2014 11:21 AM PDT

Putting off tasks until later, or procrastination, is a common phenomenon -- but new research suggests that pre-crastination -- hurrying to complete a task as soon as possible -- may also be common. The new findings suggest that people often opt to begin a task as soon as possible just to get it off their plate, even if they have to expend more physical effort to do so.

Preschool teacher depression linked to behavioral problems in children: Unhealthy classroom climate is contributing factor

Posted: 13 May 2014 11:20 AM PDT

Depression in preschool teachers is associated with behavioral problems ranging from aggression to sadness in children under the teachers' care, new research suggests.

Letting it go: Take responsibility, make amends, forgive yourself

Posted: 13 May 2014 10:26 AM PDT

Forgiving ourselves for hurting another is easier if we first make amends, giving our inner selves a 'moral OK,' according to research. The study is significant because previous studies show that inability to self-forgive can be a factor in depression, anxiety and weakened immunity.

Forgiving a wrong may actually make it easier to forget

Posted: 13 May 2014 08:36 AM PDT

We're often told to 'forgive and forget' the wrongs that we suffer -- it turns out that there may be some scientific truth behind the common saying. A new study shows that the details of a transgression are more susceptible to forgetting when that transgression has been forgiven.

Diets rich in antioxidant resveratrol fail to reduce deaths, heart disease or cancer

Posted: 12 May 2014 06:41 PM PDT

A study of Italians who consume a diet rich in resveratrol -- the compound found in red wine, dark chocolate and berries -- finds they live no longer than and are just as likely to develop cardiovascular disease or cancer as those who eat or drink smaller amounts of the antioxidant.

Try this allergy test: Three little-known facts about indoor allergies

Posted: 12 May 2014 10:48 AM PDT

Outdoor pollen might have you running for cover behind closed windows and doors, but allergists say indoor allergens are just as much trouble. One expert discusses 3 allergy misconceptions that could be making things worse.

Birth by c-section, early antibiotic use put kids at risk for allergic esophagitis

Posted: 12 May 2014 09:41 AM PDT

Children delivered by cesarean section and those given antibiotics during early infancy appear more prone to developing allergic inflammation of the esophagus — the muscular tube that connects the mouth to the stomach — according to results of a study. Eosinophilic esophagitis, or EoE, is an emerging allergic disease, the causes of which remain unclear. While still relatively rare, EoE appears to be on the rise in both children and adults, research shows.

Why exercise may not help obese shed much weight: Exercise can elevate stress response and make it more difficult to become slim

Posted: 12 May 2014 07:14 AM PDT

The obese are advised to do physical exercise. But this can increase their physiological stress responses, and thereby make it more difficult to slim, according to a new study. This research may provide an explanation for the difficulties which many people encounter in losing weight despite energetic keep-fit efforts.

Lowering cholesterol naturally with nondigestible, chemically modified wheat fiber

Posted: 06 May 2014 04:05 PM PDT

The saying, "we are what we eat," has never been more true. Nutritionists increasingly emphasize that the nutrients in the foods we consume can potentially create health and reduce disease. Now, researchers have studied the effects of a special nondigestible, chemically modified wheat fiber called resistant starch on metabolic syndrome. The research project, conducted in two 12-week sessions over a 26-week period, involved 86 adults in two Hutterite colonies in eastern South Dakota.

ScienceDaily: Top Technology News

ScienceDaily: Top Technology News


Novel technique enables air-stable water droplet networks

Posted: 13 May 2014 01:16 PM PDT

A simple new technique to form interlocking beads of water in ambient conditions could prove valuable for applications in biological sensing, membrane research and harvesting water from fog.

Techniques from natural-language processing enable computers to efficiently search video for actions

Posted: 13 May 2014 11:21 AM PDT

With the commodification of digital cameras, digital video has become so easy to produce that human beings can have trouble keeping up with it. Among the tools that computer scientists are developing to make the profusion of video more useful are algorithms for activity recognition -- or determining what the people on camera are doing when.

Radiation from early universe found key to answer major questions in physics

Posted: 13 May 2014 10:27 AM PDT

Astrophysicists have measured the minute gravitational distortions in polarized radiation from the early universe and discovered that these ancient microwaves can provide an important cosmological test of Einstein's theory of general relativity.

New implanted devices may reshape medicine: Researchers create transistors that wrap around tissues

Posted: 13 May 2014 10:27 AM PDT

Scientists have create flexible transistors that can grip large tissues, nerves and blood vessels without losing their electronic properties. These biologically adaptive, flexible transistors might one day help doctors learn more about what is happening inside the body, and stimulate the body for treatments.

Ultrafast laser technique developed to observe electron action

Posted: 13 May 2014 08:36 AM PDT

Physicists have developed a new ultrafast light source for observing electron motion in molecules -- made up of nuclei and electrons -- at the point before the nuclei start to move. By being able to observe what actually happens, scientists can begin to understand how an electron interacts with other electrons, which may help improve the efficiency of solar cells.

MEMS nanoinjector for genetic modification of cells

Posted: 13 May 2014 08:32 AM PDT

The ability to transfer a gene or DNA sequence from one animal into the genome of another plays a critical role in a wide range of medical research—including cancer, Alzheimer's disease, and diabetes. But the traditional method of transferring genetic material into a new cell, called "microinjection," has a serious downside. It involves using a small glass pipette to pump a solution containing DNA into the nucleus of an egg cell, but the extra fluid can cause the cell to swell and destroy it -- resulting in a 25 to 40 percent cell death rate.

The physics of ocean undertow: Creating more robust and sustainable beaches

Posted: 13 May 2014 08:32 AM PDT

People standing on a beach often feel the water tugging the sand away from under their feet. This is the undertow, the current that pulls water back into the ocean after a wave breaks on the beach. Large storms produce strong undertows that can strip beaches of sand. By predicting how undertows interact with shorelines, researchers can build sand dunes and engineer other soft solutions to create more robust and sustainable beaches.

Odd planet, so far from its star: Gas giant 155 light years from our solar system

Posted: 13 May 2014 08:31 AM PDT

A gas giant has been added to the short list of exoplanets discovered through direct imaging. It is located around GU Psc, a star three times less massive than the Sun and located in the constellation Pisces.

Boats offer solution for urban congestion

Posted: 13 May 2014 06:23 AM PDT

A solution for traffic congestion in many cities might lie in one of the most ancient modes of transportation available: the boat. Looking at how water-buses could be integrated into Stockholm's mass transit system, researchers have a come up with a strong case for a maritime complement to trains and buses -- and not just in Sweden.

Physicists measure second Efimov resonance of three particles in an ultracold quantum gas

Posted: 13 May 2014 06:16 AM PDT

Some years ago, quantum physicists provided experimental proof of Efimov states -- a phenomenon that until then had been known only in theory. Now they have also measured the second Efimov resonance of three particles in an ultracold quantum gas, thus proving the periodicity of this universal physical phenomenon experimentally.

Mechanisms as minds: Creating a tensegrity robot that can move

Posted: 13 May 2014 06:11 AM PDT

Before a signal even reaches your brain, your fingers can adjust the tension required to lift an object with their tendons. It's a mechanism (fingers) acting as a mind -- a phenomenon called morphological computation that scientists are exploring with tensegrity robots.

Brain may never fully recover from exposure to paint, glue, degreasers

Posted: 12 May 2014 06:37 PM PDT

People who are exposed to paint, glue or degreaser fumes at work may experience memory and thinking problems in retirement, decades after their exposure, according to a new study. Researchers assessed the workers' lifetime exposure to chlorinated solvents, petroleum solvents, and benzene, including the timing of last exposure and lifetime dosage. Benzene is used to make plastics, rubber, dye, detergents and other synthetic materials. Chlorinated solvents can be found in dry cleaning solutions, engine cleaners, paint removers and degreasers. Petroleum solvents are used in carpet glue, furniture polishes, paint, paint thinner and varnish.

Multifunctional nanoparticles for cheaper, cleaner biofuel

Posted: 12 May 2014 12:53 PM PDT

Scientists have created a faster, cleaner biofuel refining technology that not only combines processes, it uses widely available materials to reduce costs. They have developed a nanoparticle that is able to perform two processing functions at once for the production of green diesel, an alternative fuel created from the hydrogenation of oils from renewable feedstocks like algae.

Online buzz forecasts new product performance months before product release

Posted: 12 May 2014 12:53 PM PDT

Companies can significantly improve the forecasting accuracy of forthcoming products' performance by mining online consumer buzz prior to product release, according to a new study. Social media attention to a firm's forthcoming products also influences its stock price, the study shows.

Multilayer nanofiber face mask helps to combat pollution

Posted: 12 May 2014 11:22 AM PDT

Researchers have developed a ground-breaking filter technology that guards against the finest pollutants in the air. Haze is usually composed of pollutants in the form of tiny suspended particles or fine mists/droplets emitted from vehicles, coal-burning power plants and factories. Continued exposure increases the risk of developing respiratory problems, heart diseases and lung cancer. Can we avoid the unhealthy air?

Graphene and painkiller receptor combined into scalable chemical sensor

Posted: 12 May 2014 08:25 AM PDT

Researchers have created an artificial chemical sensor based on one of the human body's most important receptors, one that is critical in the action of painkillers and anesthetics. In these devices, the receptors' activation produces an electrical response rather than a biochemical one, allowing that response to be read out by a computer.

Plastics to dust: Easy-to-compost plastic bags move closer to mainstream

Posted: 12 May 2014 07:12 AM PDT

Bags meet requirements of disintegrating to particles less than 2 millimeters in size in 180 days. Since the bags are made of all-natural components, they can be composted just like any other plant-based material.

Fate of methane following Deepwater Horizon spill examined by researchers

Posted: 11 May 2014 01:55 PM PDT

The 2010 Deepwater Horizon blowout discharged roughly five million gallons of oil and up to 500,000 tons of natural gas into Gulf of Mexico offshore waters over a period of 84 days. In the face of a seemingly insurmountable cleanup effort, many were relieved by reports following the disaster that naturally-occurring microbes had consumed much of the gas and oil.

Hijacking bacteria's natural defences to trap, reveal pathogens

Posted: 11 May 2014 01:54 PM PDT

Bad bacteria could soon have no place left to hide, thanks to new materials that turn the cell's own defenses against them. Scientists have developed a technique that could locate the potential source of an infection by hijacking the normal processes of pathogens, thus revealing their location. And by using fluorescent markers to tag these cells, they have even been able to detect them by using a simple mobile phone camera.