Outgrowing emotional egocentricity
2014-05-27
This news release is available in German. Children are more egocentric than adults. Scientists from the Max Planck Institute for Human Cognitive and Brain Sciences in Leipzig have demonstrated for the first time that children are also worse at putting themselves in other people's emotional shoes. According to the researchers, the supramarginal gyrus region of the brain must be sufficiently developed in children for them to be able to overcome their egocentric take on the world.
When little Philip rejoices at winning the prize in a game, it is almost impossible for ...
People attribute free will to mind, not soul
2014-05-27
PROVIDENCE, R.I. [Brown University] — Across the board, even if they believed in the concept of a soul, people in a new study ascribed free will based on down-to-Earth criteria: Did the actor in question have the capacity to make an intentional and independent choice? The study suggests that while grand metaphysical views of the universe remain common, they have little to do with how people assess each other's behavior.
"I find it relieving to know that whether you believe in a soul or not, or have a religion or not, or an assumption about how the universe works, that ...
HIV can cut and paste in the human genome
2014-05-27
For the first time researchers have succeeded in altering HIV virus particles so that they can simultaneously, as it were, 'cut and paste' in our genome via biological processes. Developed at the Department of Biomedicine at Aarhus University, the technology makes it possible to repair genomes in a new way. It also offers good perspectives for individual treatment of both hereditary diseases and certain viral infections:
"Now we can simultaneously cut out the part of the genome that is broken in sick cells, and patch the gap that arises in the genetic information which ...
'Virtual human' shows that stiff arteries can explain the cause of high blood pressure
2014-05-27
High blood pressure is highly age-related and affects more than 1 billion people worldwide. But doctors can't fully explain the cause of 90 per cent of all cases. A computer model of a "virtual human" suggests that stiff arteries alone are enough to cause high blood pressure.
"Our results suggest that arterial stiffness represents a major therapeutic target. This is contrary to existing models, which typically explain high blood pressure in terms of defective kidney function," says Klas Pettersen, a researcher at the Norwegian University of Life Sciences and first author ...
Why does bacon smell so good? (video)
2014-05-27
WASHINGTON, May 27, 2014 — We all know bacon is delicious, but what is it about cooking bacon that makes it smell so tantalizing? In the American Chemical Society's (ACS') latest Reactions video, the team puts its nose into everyone's favorite breakfast food. We collaborated with the Compound Interest blog to break down the science of that sweet smell. The video is available at http://youtu.be/2P_0HGRWgXw
Subscribe to the series at Reactions YouTube, and follow us on Twitter @ACSreactions to be the first to see our latest videos.
INFORMATION:
The American Chemical ...
Scientists map the worst times of day for people allergic to grass pollen
2014-05-27
Atishoo! Help, there are flowering grasses around, please stay indoors – while your friends enjoy the nice summer weather! Traditionally, people allergic to grass pollen are advised to be aware of high pollen concentrations during the day, and to reduce their outdoor activities during this period.
A new study led by researchers from Aarhus University shows that it is considerably more complicated to avoid grass pollen. Based on a three-year study with intensive measurements at three different locations in Aarhus, they divide the grass pollen season into three periods, ...
Sperm cells are extremely efficient at swimming against a current
2014-05-27
Like salmon traveling upstream to spawn, sperm cells are extremely efficient at swimming against the current, according to research to be published this week.
The discovery, to be published in the journal eLife by researchers at MIT and Cambridge University, may help us to understand how some sperm travel such long distances, through difficult terrain, to reach and fertilize an egg.
Of the hundreds of millions of sperm cells that begin the journey up the oviducts, only a few hardy travelers will ever reach their destination. Not only do the cells have to swim in the ...
Attack is not always the best defense
2014-05-27
Jena (Germany) It is something like the police force of our body: the immune system. It disables intruding pathogens, it dismantles injured tissue and boosts wound healing. In this form of 'self-defense' inflammatory reactions play a decisive role. But sometimes the body's defense mechanism gets out of control and cells or tissues are affected: "Then excessive reactions can occur and illnesses along with them," Prof. Dr. Oliver Werz of the Friedrich Schiller University Jena says. He gives asthma, rheumatism, arteriosclerosis and cancer as examples: "For many of these diseases ...
The secret cargo of mosquitoes
2014-05-27
The parasite Dirofilaria repens is a roundworm that primarily attacks the subcutaneous tissue of dogs and causes lumps in the skin, swelling, and itching. Dogs, cats, foxes, wolves and martens can be infected in addition to dogs. "In humans, 16 cases of human dirofilariosis have been recorded since the year 2000, but the dark figure is definitely higher", says the lead author Katja Silbermayr. Humans, however, are so-called dead end hosts; the parasite does not reproduce in humans and therefore poses no major risk.
Silbermayr is a veterinarian and performs research on ...
Seeing e-cigarette use encourages young adult tobacco users to light up
2014-05-27
VIDEO:
"Whether participants were exposed to someone smoking a combustible or an e-cigarette, the urge to smoke a combustible cigarette was just as high in either condition, " King said. "If the...
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Seeing people use electronic cigarettes (e-cigarettes) increases the urge to smoke among regular combustible cigarettes users, according to a new study of young adult smokers. This elevated desire is as strong as when observing someone ...
Stanford researchers discover immune system's rules of engagement
2014-05-27
A study led by researchers at Stanford's School of Medicine reveals how T cells, the immune system's foot soldiers, respond to an enormous number of potential health threats.
X-ray studies at the Department of Energy's SLAC National Accelerator Laboratory, combined with Stanford biological studies and computational analysis, revealed remarkable similarities in the structure of binding sites, which allow a given T cell to recognize many different invaders that provoke an immune response.
The research demonstrates a faster, more reliable way to identify large numbers ...
Climate change accelerates hybridization between native and invasive species of trout
2014-05-27
BOZEMAN, Mont. – Scientists have discovered that the rapid spread of hybridization between a native species and an invasive species of trout in the wild is strongly linked to changes in climate.
In the study, stream temperature warming over the past several decades and decreases in spring flow over the same time period contributed to the spread of hybridization between native westslope cutthroat trout and introduced rainbow trout – the world's most widely introduced invasive fish species –across the Flathead River system in Montana and British Columbia, Canada.
Experts ...
New perspectives to the design of molecular cages
2014-05-27
Researchers from the University of Jyväskylä report a new method of building molecular cages. The method involves the exploitation of intermolecular steric effects to control the outcome of a self-assembly reaction.
Molecular cages are composed of organic molecules (ligands) which are bound to metal ions during a self-assembly process. Depending on the prevailing conditions, self-assembly processes urge to maximize the symmetry of the system and thus occupy every required metal binding site. The research group led by docent Manu Lahtinen (University of Jyväskylä, Department ...
Molecules do the triple twist
2014-05-27
An international research team led by Academy Professor Kari Rissanen of the University of Jyväskylä (Finland) and Professor Rainer Herges of the University of Kiel (Germany) has managed to make a triple-Möbius annulene, the most twisted fully conjugated molecule to date, as reported in Nature Chemistry (DOI:10.1038/nchem.1955, published online 25 May 2014).
An everyday analogue of a single twisted Möbius molecule is a Möbius strip. It can be made easily by twisting one end of a paper strip by 180 degrees and then joining the two ends. A triple twisted Möbius molecule ...
Insights into genetics of cleft lip
2014-05-27
Scientists at the European Molecular Biology Laboratory (EMBL) in Heidelberg, have identified how a specific stretch of DNA controls far-off genes to influence the formation of the face. The study, published today in Nature Genetics, helps understand the genetic causes of cleft lip and cleft palate, which are among the most common congenital malformations in humans.
"This genomic region ultimately controls genes which determine how to build a face and genes which produce the basic materials needed to execute this plan", says François Spitz from EMBL, who led the work. ...
Clinical trial reaffirms diet beverages play positive role in weight loss
2014-05-27
May 27, 2014 – A groundbreaking new study published today in Obesity, the journal of The Obesity Society, confirms definitively that drinking diet beverages helps people lose weight.
"This study clearly demonstrates that diet beverages can in fact help people lose weight, directly countering myths in recent years that suggest the opposite effect – weight gain," said James O. Hill, Ph.D., executive director of the University of Colorado Anschutz Health and Wellness Center and a co-author of the study. "In fact, those who drank diet beverages lost more weight and reported ...
Heavily decorated classrooms disrupt attention and learning in young children
2014-05-27
VIDEO:
Maps, number lines, shapes, artwork and other materials tend to cover elementary classroom walls. However, new research from Carnegie Mellon University shows that too much of a good thing may...
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PITTSBURGH—Maps, number lines, shapes, artwork and other materials tend to cover elementary classroom walls. However, new research from Carnegie Mellon University shows that too much of a good thing may end up disrupting attention and learning in ...
Migrating stem cells possible new focus for stroke treatment
2014-05-27
Two years ago, a new type of stem cell was discovered in the brain that has the capacity to form new cells. The same research group at Lund University in Sweden has now revealed that these stem cells, which are located in the outer blood vessel wall, appear to be involved in the brain reaction following a stroke.
The findings show that the cells, known as pericytes, drop out from the blood vessel, proliferate and migrate to the damaged brain area where they are converted into microglia cells, the brain's inflammatory cells.
Pericytes are known to contribute to tissue ...
Health issues, relationship changes trigger economic spirals for low-income rural families
2014-05-27
When it comes to the factors that can send low-income rural families into a downward spiral, health issues and relationship changes appear to be major trigger events. Fortunately, support networks – in particular, extended families – can help ease these poverty spells, according to new research from the NH Agricultural Experiment Station at the University of New Hampshire College of Life Sciences and Agriculture.
The research was conducted by Elizabeth Dolan, emeritus associate professor of family studies at UNH, and her colleagues Sheila Mammen at the University of ...
Africa's longest-known terrestrial wildlife migration discovered
2014-05-27
WASHINGTON, DC - Researchers have documented the longest-known terrestrial migration of wildlife in Africa – up to several thousand zebra covering a distance of 500km (more than 300 miles) – according to World Wildlife Fund (WWF).
Using GPS collars on eight adult Plains zebra (Equus quagga), WWF and Namibia's Ministry of Environment and Tourism (MET), in collaboration with Elephants Without Borders (EWB) and Botswana's Department of Wildlife and National Parks, tracked two consecutive years of movement back and forth between the Chobe River in Namibia and Botswana's Nxai ...
Chest CT helps predict cardiovascular disease risk
2014-05-27
OAK BROOK, Ill. – Incidental chest computed tomography (CT) findings can help identify individuals at risk for future heart attacks and other cardiovascular events, according to a new study published online in the journal Radiology.
"In addition to diagnostic purposes, chest CT can be used for the prediction of cardiovascular disease," said Pushpa M. Jairam, M.D., Ph.D., from the University Medical Center Utrecht, in Utrecht, the Netherlands. "With this study, we have taken a new perspective by providing a different approach for cardiovascular disease risk prediction ...
An area's level of poverty or wealth may affect the distribution of cancer types
2014-05-27
A new analysis has found that certain cancers are more concentrated in areas with high poverty, while other cancers arise more often in wealthy regions. Also, areas with higher poverty had lower cancer incidence and higher mortality than areas with lower poverty. Published early online in CANCER, a peer-reviewed journal of the American Cancer Society, the study's findings demonstrate the importance of including measures of socioeconomic status in national cancer surveillance efforts.
Overall, socioeconomic status is not related to cancer risk—cancer strikes the rich and ...
E-cigarettes: Not a healthy alternative to smoking
2014-05-27
ARLINGTON HEIGHTS, Ill. (May 27, 2014) – Caveat emptor – or "buyer beware" holds true when it comes to the unknown health effects of e-cigarettes. An article in the June issue of Annals of Allergy, Asthma & Immunology, the scientific journal of the American College of Allergy, Asthma and Immunology (ACAAI), examines risks, including the ongoing dependence on nicotine and the dual use of e-cigarettes and regular cigarettes.
The article examines the idea that one of the initial "health benefits" proposed by e-cigarettes makers was that it would help those who smoke cigarettes ...
Annals of Internal Medicine tip sheet for May 27, 2014
2014-05-27
1. Task Force: Screen high-risk individuals for hepatitis B
The U.S. Preventive Services Task Force (USPSTF) recommends hepatitis B virus (HBV) screening for nonpregnant high-risk adolescents and adults, according to a recommendation statement being published in Annals of Internal Medicine. Up to 2.2 million people in the United States have chronic HBV, and 15 to 25 percent of those infected will die from liver disease or liver cancer. Screening for HBV could identify those who may benefit from treatment. Most people born in the United States have been vaccinated for ...
Inhaling hypertonic saline decreases hospital admissions in children with bronchiolitis
2014-05-26
A team of researchers, led by physicians from Children's Hospital Los Angeles, have found that infants with bronchiolitis who were treated with inhaled hypertonic saline in the emergency department (ED) were less likely to require admission to the hospital compared to infants treated with normal saline.
The study, conducted at Children's Hospital Los Angeles and UCSF Benioff Children's Hospital Oakland, will be published in JAMA Pediatrics on May 26.
Bronchiolitis is a respiratory infection common in infants and young children that results in approximately 150,000 ...
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