Animals and humans -- a false divide?
2013-06-05
We don't just share our lives with animals; we are animals – a reality that we often choose to forget in modern Western culture. Research published in the June special issue of SAGE journal, Social Science Information (SSI), delves deeper into our relationship with other creatures, critically examining our own animal nature, and looking at how animals profoundly influence our culture – perhaps more so than we had initially thought.
We have often been told in Western thought that the human species is one that is highly developed, above that of the animal kingdom, a division ...
Nearly one-third of children with autism also have ADHD
2013-06-05
BALTIMORE, Md. (June 5, 2013) – In a study of the co-occurrence of attention deficit hyperactivity disorder (ADHD) and autism spectrum disorder (ASD) in early school-age children (four to eight years old), researchers at the Kennedy Krieger Institute found that nearly one-third of children with ASD also have clinically significant ADHD symptoms. Published in Autism: The International Journal and Practice (Epub ahead of print), the study also found that children with both ASD and ADHD are significantly more impaired on measures of cognitive, social and adaptive functioning ...
Higher state health spending positively correlates to higher obesity rates, MU study finds
2013-06-05
COLUMBIA, Mo. -- Americans are gaining weight at an alarming rate, with obesity increasing from 12 percent of the nation's population in 1990 to 23 percent by 2005, according to the Centers for Disease Control and Prevention. Despite an increase in state public health funding to combat these growing rates around the country, obesity continues to rise. A new University of Missouri study has found that as states spend more money on health care, obesity rates actually increase. Charles Menifield, a professor in the Truman School of Public Affairs at MU, says his findings strongly ...
Tiny bubbles in your metallic glass may not be a cause for celebration
2013-06-05
Bubbles in a champagne glass may add a festive fizz to the drink, but microscopic bubbles that form in a material called metallic glass can signal serious trouble. In this normally high-strength material, bubbles may indicate that a brittle breakdown is in progress.
That's why Johns Hopkins researchers used computer simulations to study how these bubbles form and expand when a piece of metallic glass is pulled outward by negative pressure, such as the suction produced by a vacuum. Their findings were published recently in the journal Physical Review Letters.
"A lot ...
Unraveling tumor growth one stem cell at a time
2013-06-05
Researchers at the University of Cambridge have discovered that a single mutation in a leukemia-associated gene reduces the ability of blood stem cells to make more blood stem cells, but leaves their progeny daughter cells unaffected. Their findings have relevance to all cancers that are suspected to have a stem cell origin as they advance our understanding of how single stem cells are subverted to cause tumors.
Published this week in PLOS Biology, the study by Professor Tony Green and his team at the Cambridge Institute for Medical Research is the first to isolate highly ...
Drug companies' patent-extending strategies substantially increase health care costs
2013-06-05
Evergreening strategies—where pharmaceutical companies slightly change the formulation of their brand drug into "follow on" drugs by combining formulations or producing slow-release forms, for example, so that they can extend the patent—substantially contributed to an increase in overall healthcare costs in the Swiss canton of Geneva, according to a study by international researchers published in this week's PLOS Medicine.
These findings are important as they provide further evidence that policies encouraging the prescribing of generic medicines, for example through hospital ...
Serum iron levels may be causally associated with Parkinson's disease risk
2013-06-05
Increased iron levels may be causally associated with a decreased risk of developing Parkinson's disease, says a new paper published this week in PLOS Medicine. Irene Pichler from EURAC in Italy and a group of international colleagues investigated whether there was any evidence of an association between serum iron levels and the risk of Parkinson's disease. While the causes of Parkinson's disease are currently unknown, a combination of genetic and environmental factors are said to be attributed to the disease.
Because previous studies have shown a possible association ...
Research on household air pollution must be a global health priority
2013-06-05
Addressing the burden of household air pollution from solid fuel combustion— the leading environmental cause of death and disability in the world—has led to the implementation of many important interventions to promote access to improved stoves and clean fuels, but there is little demonstrated evidence of health benefits from most of these programs or technologies. Such are the conclusions of a new Policy Forum article published in this week's PLOS Medicine by authors who also outline a set of research priorities for addressing household air pollution.
A group of international ...
Gastric bypass surgery may help manage diabetes risk factors
2013-06-05
Among mild to moderately obese patients with type 2 diabetes, adding gastric bypass surgery to lifestyle and medical management was associated with a greater likelihood of improved levels of metabolic risk factors such as blood glucose, LDL-cholesterol and systolic blood pressure, according to a study in the June 5 issue of JAMA.
"The foundation of treatment for type 2 diabetes mellitus is weight loss, achieved through reduction of energy intake and increased physical activity via lifestyle modification. Results from the Look AHEAD (Action for Health in Diabetes) trial ...
Study examines use of bariatric surgical procedures for non-morbidly obese adults with diabetes
2013-06-05
A review of more than 50 studies found limited evidence supporting the use of bariatric surgical procedures for non-morbidly obese adults (body mass index [BMI] 30-35) with diabetes or impaired glucose intolerance, according to a study in the June 5 issue of JAMA. For the limited data that was available for this patient group, bariatric surgery was associated with greater improvements in short-term weight loss, intermediate blood glucose levels, blood pressure, and high cholesterol than nonsurgical interventions such as medications, diet, and behavioral changes.
"Bariatric ...
Research finds retinal vessel leakage during high altitude exposure
2013-06-05
"Exposure to high altitude can cause acute mountain sickness (AMS) and, in severe cases, cerebral or pulmonary edema. Capillary leakage has been hypothesized to play a role in the pathogenesis of AMS, although the mechanism of altitude-related illnesses remains largely unknown," writes Gabriel Willmann, M.D., of the University of Tubingen, Germany, and colleagues. "Vessel leakage in the retinal periphery has not been investigated. Our objective was to assess retinal vessel integrity at high altitude using fluorescein angiography."
As reported in a Researcher Letter, the ...
'Lizard King' fossil shows giant reptiles coexisted with mammals during globally warm past
2013-06-05
Some 40 million years before rock and roll singer Jim Morrison's lyrics earned him the moniker "the Lizard King," an actual king lizard roamed the hot tropical forests of Southeast Asia, competing with mammals for food and other resources.
A team of U.S. paleontologists, led by Jason Head of the University of Nebraska-Lincoln, describes fossils of the giant lizard from Myanmar this week in the scientific journal Proceedings of the Royal Society B. Their analysis shows that it is one of the biggest known lizards ever to have lived on land.
Fittingly, it's been named ...
Tools for better understanding breast cancer stem cells
2013-06-05
A joint project between the Griffith University and the UQ Centre for clinical Research (UQCCR) has characterised an in vitro model that allows further studies on the breast cancer biology.
These studies include the confirmation that primary tissue obtained from patients with breast cancer behaves similarly to those derived from long-term cultured cell lines.
Griffith University's Associate Professor Alejandro Lopez said the team was working towards making breast cancer stem cells the target of specific cancer therapies, to improve current treatment outcomes.
"We ...
Alzheimer's disease drugs linked to reduced risk of heart attacks
2013-06-05
Drugs that are used for treating Alzheimer's disease in its early stages are linked to a reduced risk of heart attacks and death, according to a large study of over 7,000 people with Alzheimer's disease in Sweden.
The research, which is published online today (Wednesday) in the European Heart Journal [1], looked at cholinesterase inhibitors (ChEIs), such as donepezil, rivastigmine and galantamine, which are used for treating mild to moderate Alzheimer's disease [2]. Side-effects of ChEIs include a beneficial effect on the vagus nerve, which controls the rate at which ...
Helicopter takes to the skies with the power of thought
2013-06-05
A remote controlled helicopter has been flown through a series of hoops around a college gymnasium in Minnesota.
It sounds like your everyday student project; however, there is one caveat…the helicopter was controlled using just the power of thought.
The experiments have been performed by researchers hoping to develop future robots that can help restore the autonomy of paralysed victims or those suffering from neurodegenerative disorders.
Their study has been published today, 4 June 2013, in IOP Publishing's Journal of Neural Engineering and is accompanied by a video ...
Personality is the result of nurture, not nature, suggests study on birds
2013-06-05
Researchers at the University of Exeter and the University of Hamburg investigated how personality is transferred between generations. They found that foster parents have a greater influence on the personalities of fostered offspring than the genes inherited from birth parents.
Dr Nick Royle from the University of Exeter said: "This is one of the first experiments to show that behaviour can be non-genetically transmitted from parents to offspring. Our study shows that in zebra finches, personality traits can be transmitted from one generation to another through behaviour ...
Research teams find genetic variant that could improve warfarin dosing in African-Americans
2013-06-05
In the first genome-wide association study to focus on warfarin dose requirement in African-Americans, a multi-institutional team of researchers has identified a common genetic variation that can help physicians estimate the correct dose of the widely used blood-thinning drug warfarin.
The discovery, reported online first in The Lancet, suggests that people of African ancestry who carry this variant—more than 40 percent of the patients enrolled in this study—need significantly less warfarin to obtain optimal benefits compared to those who lack this variant.
"Adding ...
Sexual selection in the sea
2013-06-05
Biologists have uncovered new insights into how the male sexual behaviour of the peculiar southern bottletail squid is primed to produce the greatest number of offspring.
Recent studies published in the journals Biology Letters and Behavioral Ecology, have revealed the female squid ingest the ejaculates of their mates, a trait never before associated with any species of cephalopod – a group including squid, octopus, cuttlefish and nautilus.
The studies, led by PhD student Benjamin Wegener and Dr Bob Wong from Monash University's School of Biological Sciences, in collaboration ...
Jury still out on bariatric surgery for patients with moderate obesity and diabetes
2013-06-05
Bariatric surgery such as gastric bypass is associated with better short-term control of abnormal blood sugar and more weight loss than conventional nonsurgical therapy in diabetic patients who are moderately obese, but there is not enough evidence to more widely recommend the procedure, according to a new RAND Corporation study.
A review of more than 30 studies found that diabetic people with moderate obesity lost more weight and had better glucose control over two years if they were treated with bariatric surgery rather than non-surgical alternatives like dieting and ...
Little telescope discovers metal-poor cousin of famous planet
2013-06-05
A scientific team led by University of Louisville doctoral student Karen Collins has discovered a hot Saturn-like planet in another solar system 700 light-years away.
Collins announced the discovery of exoplanet KELT-6b Tuesday, June 4, during the American Astronomical Society's national meeting in Indianapolis.
Astronomers caught sight of the planet when it passed in front of, or "transited," its host star—and they've since discovered that the planet resembles one of the most famous and well-studied transiting planets, HD 209458b.
The discovery was made using inexpensive ...
Neuronal regeneration and the 2-part design of nerves
2013-06-05
ANN ARBOR—Researchers at the University of Michigan have evidence that a single gene controls both halves of nerve cells, and their research demonstrates the need to consider that design in the development of new treatments for regeneration of nerve cells.
A paper published online in PLOS Biology by U-M Life Sciences Institute faculty member Bing Ye and colleagues shows that manipulating genes of the fruit fly Drosophila to promote the growth of one part of the neuron simultaneously stunts the growth of the other part.
Understanding this bimodal nature of neurons ...
USF researchers: Life-producing phosphorus carried to Earth by meteorites
2013-06-05
TAMPA, Fla. (June 4, 2013) – Scientists may not know for certain whether life exists in outer space, but new research from a team of scientists led by a University of South Florida astrobiologist now shows that one key element that produced life on Earth was carried here on meteorites.
In an article published in the new edition of the Proceedings of the National Academies of Sciences, USF Assistant Professor of Geology Matthew Pasek and researchers from the University of Washington and the Edinburg Centre for Carbon Innovation, revealed new findings that explain how the ...
Candidate drug provides benefit in SMA animal models
2013-06-05
In a new publication that appears in Human Molecular Genetics, the laboratory of Christine DiDonato, PhD reports on their pharmacological characterization of the drug RG3039, demonstrating that it can extend survival and improve function in two spinal muscular atrophy (SMA) mouse models. They have determined the minimum effective dose and drug action, thus contributing to dose selection and exposure estimates for the first studies with RG3039 in humans. As in cellular assays, the animal studies have shown that drug treatment leads to improvement in nuclear gem/Cajal body ...
Fires in eastern China
2013-06-05
NASA's Aqua satellite captured multiple plumes of smoke from agricultural fires and industrial pollution in China. The smoke and haze stretches from Inner Mongolia, located north of Beijing, south and west including the provinces of Hebei, Shedong, Henan, Shanxi, Hubai, Hunan, and Chongqing.
The Moderate Resolution Imaging Spectroradiometer (MODIS) instrument aboard NASA's Aqua satellite has infrared capabilities that can detect heat from the various wildfires. This image was captured on June 2, 2013 5:55 UTC (1:55 a.m. EDT/2:05 p.m. MT). In the MODIS images, fires, or ...
Adult male victims of sex assault seek out 5 or more medical services: Study
2013-06-05
TORONTO, ON, June 4, 2013 — While only a small percentage of adult males who are victims of sex assault report the crime, a new study by Women's College Research Institute (WCRI) and the Ontario Network of Sexual Assault/Domestic Violence Treatment Centres (ONSA/DVTCs) shows of those who do, an overwhelming majority — almost 90 per cent — use five or more services ranging from counselling to medical care and treatment.
The study, published in the Journal of Interpersonal Violence, sheds light on the characteristics of male victims of sex assault and the services they ...
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