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Saturday, October 4, 2014

ScienceDaily: Top Health News

ScienceDaily: Top Health News

Discovery could prevent development of brain tumors in children

Posted: 02 Oct 2014 11:18 AM PDT

A mechanism that promotes the progression of medulloblastoma, the most common brain tumor found in children, has been discovered by researchers. The team found that a protein known as Sonic Hedgehog induces DNA damage causes the cancer to develop.

Falling asleep: Revealing the point of transition

Posted: 02 Oct 2014 11:18 AM PDT

How can we tell when someone has fallen asleep? To answer this question, scientists have developed a new statistical method and behavioral task to track the dynamic process of falling asleep.

In-depth analysis of bat influenza viruses concludes they pose low risk to humans

Posted: 02 Oct 2014 11:17 AM PDT

Zoonosis -- transmission of infections from other vertebrates to humans -- causes regular and sometimes serious disease outbreaks. Bats are a well-known vertebrate reservoir of viruses like rabies and Ebola. Recent discovery of sequences in bats that are resemble influenza virus genes raised the question of whether bat flu viruses exist and could pose a threat to humans.

Sense of invalidation uniquely risky for troubled teens

Posted: 02 Oct 2014 10:11 AM PDT

A study of 99 teens hospitalized out of concern about suicide risk found that a high perception of family invalidation -- or lack of acceptance -- predicted future suicide events among boys, and peer invalidation predicted future self harm, such as cutting, among the teens in general.

Study gauges humor by age

Posted: 02 Oct 2014 10:11 AM PDT

Depending on your age, you may or may not find certain types of humor funny, especially if it pokes fun at others. Now researchers have examined whether young, middle-aged and older adults found clips of inappropriate social behavior to be funny.

Ebola genome browser now online to aid researchers' response to crisis

Posted: 02 Oct 2014 09:53 AM PDT

The UC Santa Cruz Genomics Institute has just released a new Ebola genome browser to assist global efforts to develop a vaccine and antiserum to help stop the spread of the Ebola virus.

To life! Practicing Judaism could protect against suicide, study finds

Posted: 02 Oct 2014 09:38 AM PDT

In 1897, Emile Durkheim, the father of sociology, speculated that religion could protect against against suicidal impulses. A study conducted by Tel Aviv University researchers has now confirmed for the first time that religious Jewish teens exhibit 45% less suicide-risk behavior, including attempted suicide, than their secular Jewish peers.

Socioeconomic factors, fashion trends linked to increase in melanoma

Posted: 02 Oct 2014 09:38 AM PDT

Researchers explored extenuating factors, such as socioeconomic and fashion trends, that may have contributed to increased incidence of melanoma over the past century.

Using Eyewitness identifications: New report urges caution

Posted: 02 Oct 2014 09:37 AM PDT

A new report recommends best practices that law enforcement agencies and courts should follow to improve the likelihood that eyewitness identifications used in criminal cases will be accurate.

CDC team assisting Ebola response in Dallas, Texas; Investigation of first U.S. Ebola case underway

Posted: 02 Oct 2014 09:37 AM PDT

Ten experts from the Centers for Disease Control and Prevention -- supported 24/7 by the CDC's full Emergency Operations Center and Ebola experts in CDC's Atlanta headquarters -- have arrived in Texas and are working closely with Texas state and local health departments to investigate the first Ebola case in the United States. Nine members of the CDC team arrived last night and one arrived Oct. 1, 2014.

The larger your friends the larger your appetite, study shows

Posted: 02 Oct 2014 09:37 AM PDT

Have you ever ordered more food at a restaurant than you intended? There are elements of dining rooms that actually prime you to eat more food. One such element is the weight of those dining with or near you. A new study found that the body type of your dining partner, or that of those dining nearby, may actually influence how much you serve yourself and how much you eat.

Link between depression, abnormal brain response to visceral pain in patients with IBS

Posted: 02 Oct 2014 09:36 AM PDT

High rates of anxiety and depression amongst patients with irritable bowel syndrome (IBS) have led many researchers to believe there could be a causal relationship between psychological factors and IBS symptoms. Now, scientists have found clear evidence that patients with IBS process pain signals from the gut abnormally, and that disturbed brain responses to pain are particularly pronounced in patients with more depression symptoms.

DNA 'bias' may keep some diseases in circulation, biologists show

Posted: 02 Oct 2014 09:36 AM PDT

The process known as gene conversion has been studied in the context of the evolution of human populations. Researchers found that a bias toward certain types of DNA sequences during gene conversion may be an important factor in why certain heritable diseases persist in populations around the world.

How curiosity changes the brain to enhance learning

Posted: 02 Oct 2014 09:36 AM PDT

The more curious we are about a topic, the easier it is to learn information about that topic. New research provides insights into what happens in our brains when curiosity is piqued. The findings could help scientists find ways to enhance overall learning and memory in both healthy individuals and those with neurological conditions.

Teen Texting: Difference in girls, boys text talk, reflection on gender identity

Posted: 02 Oct 2014 09:34 AM PDT

Teenage years are a turbulent time of learning independence, developing social skills and experiencing sexuality and romance. Teens face peer groups pressure and have no micro guidance from parents. Texting is an important social communication channel for teens, giving the opportunity for anxiety free communication with the opposite sex. This study explores teenager's use of text, language differences between sexes and overall gender identity.

Judgment and decision-making: Brain activity indicates there is more than meets the eye

Posted: 02 Oct 2014 07:12 AM PDT

People make immediate judgments about images they are shown, which could impact on their decisions, even before their brains have had time to consciously process the information, a study of brainwaves has found.

Common painkillers combined with other drugs may cause high risk of GI bleeding

Posted: 02 Oct 2014 07:12 AM PDT

Nonsteroidal anti-inflammatory drugs -- such as ibuprofen and aspirin -- increase one's risk of upper gastrointestinal bleeding. When taken in combination with other drugs, this risk is significantly higher, according to new research.

Dog's epigenome gives clues to human cancer

Posted: 02 Oct 2014 07:11 AM PDT

The dog's epigenome has been characterized by researchers who transferred the results to human cancer to understand the changes in appearance of tumors. Study results suggest that act pharmacological action on these epigenetic alterations may be helpful in slowing disease progression.

Doing math with your body

Posted: 02 Oct 2014 07:09 AM PDT

You do math in your head most of the time, but you can also teach your body how to do it. Researchers investigated how our brain processes and understands numbers and number size. They show that movements and sensory perception help us understand numbers.

Making old lungs look young again, with ibuprofen

Posted: 02 Oct 2014 07:08 AM PDT

The lungs become more inflammatory with age, researchers say, and add that ibuprofen can lower that inflammation. Immune cells from old mouse lungs fought tuberculosis bacteria as effectively as cells from young mice after lung inflammation was reduced by ibuprofen.

Parent coaching early intervention program benefits young children with autism

Posted: 02 Oct 2014 07:08 AM PDT

A parent coaching intervention brings meaningful benefits for preschool-aged children with autism-spectrum disorders (ASD), according to a clinical trial. The approach "fosters parents' interactional abilities and play skills to promote their children's functional development," according to the authors. Parents reported that they were able to engage their child in 15- to 20-minute play sessions and throughout daily routines, for a total of two hours per day.

Relationship between neighborhood drug sales, drug use found

Posted: 02 Oct 2014 06:24 AM PDT

A new study looks at neighborhood factors as a cause to explain illicit drug use, exploring the associations between the perceived frequency of drug sales, drug use, and peer attitudes towards drug use.

Schizophrenia, bipolar disorder associated with dendritic spine loss in brain

Posted: 02 Oct 2014 06:24 AM PDT

Schizophrenia and bipolar disorder both appear to be associated with dendritic spine loss in the brain, suggesting the two distinct disorders may share common pathophysiological features.

Discovery helps to spot what makes a good drug

Posted: 02 Oct 2014 06:24 AM PDT

A new test could revolutionize the discovery of new prescription drugs. The test will help determine which drugs are unlikely to work at an early stage, speeding up the time it takes to make safe and effective medicines available, scientists say.

Auditory system: The ruffling effect of rumble

Posted: 02 Oct 2014 06:24 AM PDT

Barely perceptible low-frequency signals nevertheless activate measurable responses in our auditory circuits. Neurobiologists have now characterized the remarkable impact of low-frequency sounds on the inner ear.

Economist finds formula for 'perfect ask' in online fundraising

Posted: 02 Oct 2014 06:24 AM PDT

Going it alone and setting targets are part of the 'perfect ask' fundraising formula to generate the most online donations for charity events, according to research.

Nanoparticles give up forensic secrets

Posted: 02 Oct 2014 05:43 AM PDT

A group of researchers from Switzerland has thrown light on the precise mechanisms responsible for the impressive ability of nanoparticles to detect fingermarks left at crime scenes.

People prone to delusions make rushed decisions, research shows

Posted: 02 Oct 2014 05:43 AM PDT

People who are prone to delusions gather insufficient information before making decisions, according to research. "In our study, the combination of rewards and costs created optimal decision points, allowing us to investigate genuine 'jumps to conclusions'. Our results confirm that delusion-prone people are less likely to wait for the best moment before making a decision. This indicates that they would rush to make choices in their everyday lives, relating to anything from money or jobs to family and friends, which could lead to less successful outcomes for them," authors said.

Science and practice of people-centerd health systems

Posted: 02 Oct 2014 05:43 AM PDT

A unique collection of studies exploring the theme of the Third Global Symposium on Health Systems Research has been published. This collection of studies on 'the science and practice of people-centred health systems' presents the latest in the field of health policy and systems research, bringing together research from Ethiopia, Uganda, Ghana, Nigeria, South Africa, India, Argentina and Brazil.

How to protect health workers in conflicts, crisis

Posted: 02 Oct 2014 05:43 AM PDT

Recruiting health workers with high levels of internal motivation is critical for work in difficult conditions, where their personal security and health might be compromised, according to new research.

New drug achieves significant additional cholesterol-lowering in people with inherited high cholesterol on statins

Posted: 02 Oct 2014 05:43 AM PDT

Evolocumab, an injected form of a new class of drugs called PCSK9 inhibitors, is highly effective at reducing low-density lipoprotein (LDL) or "bad cholesterol" levels with few side effects in people with familial hypercholesterolaemia (FH), an inherited condition that causes extremely high cholesterol and high risk of cardiovascular disease at an early age.

Energy drinks cause insomnia, nervousness in athletes

Posted: 02 Oct 2014 05:43 AM PDT

A study analyzing the positive and negative effects of energy drinks on athletes has seen that, although in principle their sports performance was seen to improve by between 3% and 7%, there was also an increase in the frequency of insomnia, nervousness and the level of stimulation in the hours following competition, scientists report.

Novel phenolic compounds discovered in barley, beer

Posted: 02 Oct 2014 05:43 AM PDT

Novel forms of phenolic compounds have been discovered from barley and beer. The results will open new interesting possibilities for evaluation of possible health benefits of barley and beer. The study shows that the diversity of chemical defense compounds typical to barley, namely hordatines and their precursors, is much larger than previously thought. These compounds are found in barley grains, but also in beers brewed from barley malts.

Internet addicts often suffer from additional disorders

Posted: 02 Oct 2014 05:41 AM PDT

Internet addicts often suffer from concomitant disorders, most frequently from depressive disorders, anxiety disorders and ADHS, researchers report.

Space not only rules genes, but mind as well

Posted: 02 Oct 2014 05:41 AM PDT

Changes in spatial distribution of genetic material can lead to neuropsychiatric disorders, as discovered recently by researchers. The investigation of the genetically modified laboratory mice define new directions in the fight against neuropsychiatric disorders in humans; they also suggest that the results of some previous studies of mouse behavior might be misinterpreted.

Drug-food interactions in mountaineering

Posted: 02 Oct 2014 05:41 AM PDT

The nutritional and health situations existing at high altitudes, as well as the routinely used nutritional ergogenic and pharmacological aids, have been the focus of recent study. According to researchers, the possible interactions between drugs and food and nutrients taken may endanger the mountaineer's health if all this is not conducted under strict control.

Fine tuning nanoparticles for the medical industry

Posted: 02 Oct 2014 05:41 AM PDT

Nanoparticles have the potential to revolutionize the medical industry, but they must possess a few critical properties. First, they need to target a specific region, so that they do not scatter throughout the body. They also require some sort of sensing method, so that doctors and researchers can track the particles. Finally, they need to perform their function at the right moment, ideally in response to a stimulus. Scientists are trying to develop new particles with unprecedented properties that still meet these requirements.

New molecule fights oxidative stress; May lead to therapies for cancer and Alzheimer's

Posted: 01 Oct 2014 03:59 PM PDT

Breathing oxygen helps the body create energy for its cells. As a result of the breathing process, reactive molecules called 'free radicals' are produced that often cause damage to proteins and genes found in cells. This damage is known as oxidative stress. Free radicals also have been linked to cancer, Alzheimer's and Parkinson's disease. Now, investigators have discovered a molecule that treats oxidative stress.

'Stealth' nanoparticles could improve cancer vaccines

Posted: 01 Oct 2014 07:27 AM PDT

Cancer vaccines have recently emerged as a promising approach for killing tumor cells before they spread. But so far, most clinical candidates haven't worked that well. Now, scientists have developed a new way to deliver vaccines that successfully stifled tumor growth when tested in laboratory mice. And the key is in the vaccine's unique stealthy nanoparticles.

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