Managing bacteria and other microorganisms in the body, rather than just fighting them, may be lead to better health and a stronger immune system, according to a Penn State biologist. Researchers have historically focused on microbes in the body as primarily pathogens that must be fought, said Eric Harvill, professor of microbiology and infectious disease. However, he said that recent evidence of the complex interaction of the body with microbes suggests a new interpretation of the relationship. "Now we are beginning to understand that the immune system interacts with ...

PHILADELPHIA – Clumps of α-synuclein protein in nerve cells are hallmarks of many degenerative brain diseases, most notably Parkinson's disease. "No one has been able to determine if Lewy bodies and Lewy neurites, hallmark pathologies in Parkinson's disease can be degraded," says Virginia Lee, PhD, director of the Center for Neurodegenerative Disease Research, at the Perelman School of Medicine, University of Pennsylvania. "With the new neuron model system of Parkinson's disease pathologies our lab has developed recently, we demonstrated that these aberrant clumps ...

The most commonly occurring red alga in the algal order Bangiales in New Zealand has at last received a formal scientific name. Pyropia plicata, is an intertidal red alga, found in abundance in the North, South and Chatham Islands. It has been confused for many years with a species first collected from the New Zealand subantarctic islands in 1840. Recent research had clarified the identity and distribution of the southern species, Porphyra columbina, and also transferred it to the genus Pyropia. The description of Py. plicata was published in the open access journal PhytoKeys. The ...

ROCHESTER, Minn. -- It appears that the majority of spouses/partners of physicians in the United States are happy with their relationships, according to Mayo Clinic research. Of the about 900 spouses/partners of physicians who responded to a national survey, 85 percent said that they were satisfied in their relationship and 80 percent said they would choose a physician spouse/partner again if they could revisit their choice. These values are similar to those of married adults in the U.S. overall. The study appears in the March edition of Mayo Clinic Proceedings. Consistent ...

WACO, Texas (March 28, 2013)- People living near asphalt pavement sealed with coal tar have an elevated risk of cancer, according to a study in the journal Environmental Science and Technology. Much of this calculated excess risk results from exposures in children, age six or younger, to polycyclic aromatic hydrocarbons (PAHs) from the sealant. "The increased cancer risk associated with coal-tar-sealed asphalt (CSA) likely affects a large number of people in the U.S. Our results indicate that the presence of coal-tar-based pavement sealants is associated with significant ...

Philadelphia, PA, March 28, 2013 – Antidepressants are commonly prescribed for the treatment of depression, but many individuals do not experience symptom relief from treatment. The National Institute of Mental Health's STAR*D study, the largest and longest study ever conducted to evaluate depression treatment, found that only approximately one-third of patients responded within their initial medication trial and approximately one-third of patients did not have an adequate clinical response after being treated with several different medications. Thus, identifying predictors ...

DURHAM, N.H. – Adolescents participating in wilderness and adventure therapy programs are at significantly less risk of injury than those playing football and are three times less likely to visit the emergency room for an injury than if they were at home, a new study by University of New Hampshire researchers finds. These findings, based on an analysis of risk management data from 12 programs providing outdoor behavioral healthcare in 2011, were reported in the latest issue of the Journal of Therapeutic Schools and Programs. "After 'does this program work?', the question ...

ALBUQUERQUE, NM and DURHAM, NC--A new study conducted by The Mind Research Network in Albuquerque, N.M., shows that neuroimaging data can predict the likelihood of whether a criminal will reoffend following release from prison. The paper, which is to be published in the Proceedings of the National Academy of Sciences, studied impulsive and antisocial behavior and centered on the anterior cingulate cortex (ACC), a portion of the brain that deals with regulating behavior and impulsivity. You can view the paper by clicking here: http://www.pnas.org/cgi/doi/10.1073/pnas.1219302110. The ...

PHILADELPHIA — During embryonic development, animals generate many different types of cells, each with a distinct function and identity. "Although the identities of these cells remain stable under normal conditions, some cells can be persuaded to take on new identities, through reprogramming," says Ben Stanger, MD, PhD, assistant professor of Medicine in the Division of Gastroenterology at the Perelman School of Medicine, University of Pennsylvania. Researchers have been able to reprogram cells experimentally, but few have shown that cells can change their identities ...

The union of theory and practice makes broadband, low-loss optical devices practical, which is why two groups of Penn State engineers collaborated to design optical metamaterials that have custom applications that are easily manufactured. Metamaterials are manufactured materials that derive their unusual properties from structure rather than only composition, and possess exotic properties not usually found in nature. Nanostructured metamaterials appear different for signals of different frequencies. They are dispersive, so that if researchers manipulate this material ...

Women who abruptly and prematurely lose estrogen from surgical menopause have a two-fold increase in cognitive decline and dementia. "This is what the clinical studies indicate and our animal studies looking at the underlying mechanisms back this up," said Brann, corresponding author of the study in the journal Brain. "We wanted to find out why that is occurring. We suspect it's due to the premature loss of estrogen." In an effort to mimic what occurs in women, Brann and his colleagues looked at rats 10 weeks after removal of their estrogen-producing ovaries that were ...

Swarms of robots acting together to carry out jobs could provide new opportunities for humans to harness the power of machines. Researchers in the Sheffield Centre for Robotics, jointly established by the University of Sheffield and Sheffield Hallam University, have been working to program a group of 40 robots, and say the ability to control robot swarms could prove hugely beneficial in a range of contexts, from military to medical. The researchers have demonstrated that the swarm can carry out simple fetching and carrying tasks, by grouping around an object and working ...

Considerable opportunity exists to improve interventions and outcomes of traumatic brain injury (TBI) in older adults, according to three studies published in the recent online issue of NeuroRehabilitation by researchers from the Icahn School of Medicine at Mount Sinai. An Exploration of Clinical Dementia Phenotypes Among Individuals With and Without Traumatic Brain Injury Some evidence suggests that a history of TBI is associated with an increased risk of dementia later in life, but the clinical features of dementia associated with TBI have not been well investigated. ...

(Edmonton) Researchers from the University of Alberta are teaming up with child-care providers and day-home operators to ensure they have adequate training and support needed to offer inclusive spaces for children with disabilities. Lesley Wiart was the lead author of a new study that identified challenges in providing inclusive spaces for children with physical disabilities, cognitive impairments and behavioural issues. The research showed that many Alberta child-care centres and day homes support inclusion but sometimes lack training and support. "Even though providers ...

This press release is available in German. Mate choice is a key factor in the evolution of new animal species. The choice of a specific mate can decisively influence the evolutionary development of a species. In mice, the attractiveness of a potential mate is conveyed by scent cues and ultrasonic vocalizations. Researchers from the Max Planck Institute for Evolutionary Biology in Plön investigated whether house mice (Mus musculus) would mate with each other even if they were from two populations which had been separated from each other for a long time period. To do this, ...

DENVER – Physicians who care for lung cancer patients recognize the importance of tobacco cessation, but often do not provide cessation assistance to their patients according to a recent study published in the Journal of Thoracic Oncology (JTO). An online survey was conducted in 2012 by the International Association for the Study of Lung Cancer's (IASLC) Tobacco Control and Smoking Cessation Committee. The survey asked IASLC members about their practices, perceptions and barriers to tobacco assessment and cessation in cancer patients. More than 1,500 IASLC members responded ...

NEW YORK (March 28, 2013) — A new study led by WCS-India scientist Vidya Athreaya finds that certain landscapes of western India completely devoid of wilderness and with high human populations are crawling with a different kind of backyard wildlife: leopards. The study found as many as five adult large carnivores, including leopards and striped hyenas, per 100 square kilometers (38 square miles), a density never before reported in a human-dominated landscape. The study, called "Big Cats in Our Backyards," appeared in the March 6 edition of the journal PLoS One. ...

In 2010, almost 2 million American children had at least one parent in active military duty. A new University of Iowa study suggests that deployment of a parent puts these children at an increased risk for drinking alcohol and using drugs. Using data from a statewide survey of sixth-, eighth-, and 11th-grade students in Iowa, the researchers found an increase in 30-day alcohol use, binge drinking, using marijuana and other illegal drugs, and misusing prescription drugs among children of deployed or recently returned military parents compared to children in non-military ...

For years, scientists have been concerned about chemicals in the environment that mimic the estrogens found in the body. In study after study, researchers have found links between these "xenoestrogens" and such problems as decreased sperm viability, ovarian dysfunction, neurodevelopmental deficits and obesity. But experimental limitations have prevented them from exploring one of the most serious questions posed by exposure to xenoestrogens: what happens when — as in the real world — an individual is exposed to multiple estrogen-mimicking chemicals at the same time? Now ...

A UCLA study shows that heart failure medications recommended by national guidelines are highly cost effective in saving lives and may also provide savings to the health care system. Heart failure, a chronic, progressive disease, affects millions of individuals and results in considerable morbidity, the use of extensive health care resources, and substantial costs. Currently published online, the study will also appear in the April 2 print issue of the Journal of the American College of Cardiology. Researchers studied the incremental health and cost benefits of ...

The field of regenerative medicine holds great promise, propelled by greater understanding of how stem cells differentiate themselves into many of the body's different cell types. But clinical applications in the field have been slow to materialize, partially owing to difficulties in replicating the conditions these cells naturally experience. A team of researchers from the University of Pennsylvania has generated new insight on how a stem cell's environment influences what type of cell a stem cell will become. They have shown that whether human mesenchymal stem cells ...

Physical activity and its relation to obesity has been studied for decades by researchers; however, almost no one has studied the reverse – obesity's effect on physical activity. So BYU exercise science professor Larry Tucker decided to look at the other side of the equation to determine if obesity leads to less activity. The findings, no surprise, confirmed what everyone has assumed for years. "Most people talk about it as if it's a cycle," Tucker said, senior-author on a study appearing online ahead of print in the journal Obesity. "Half of the cycle has been studied ...

Focusing on the present rather than letting the mind drift may help to lower levels of the stress hormone cortisol, suggests new research from the Shamatha Project at the University of California, Davis. The ability to focus mental resources on immediate experience is an aspect of mindfulness, which can be improved by meditation training. "This is the first study to show a direct relation between resting cortisol and scores on any type of mindfulness scale," said Tonya Jacobs, a postdoctoral researcher at the UC Davis Center for Mind and Brain and first author of a ...

Home hot water heater temperatures are too high, warns a team of researchers from the Johns Hopkins Bloomberg School of Public Health. Despite the adoption of voluntary standards by manufacturers to preset hot water heater temperature settings below the recommended safety standard of 120°F, temperatures remain dangerously high for a significant proportion of homes, presenting a scald hazard for young children and the elderly. The report is published in the March 2013 issue of Journal Of Burn Care Research. In the U.S., tap water burns cause an estimated 1,500 hospital ...

With millions of eggs about to have their annual encounter with red, green, blue and other dyes this holiday weekend, the American Chemical Society (ACS) today released a new video that will egg people on in discovering the chemistry that underpins the process. The video is at http://www.BytesizeScience.com. Produced by the ACS Office of Public Affairs, The Chemistry of Egg Dyeing features Diane Bunce, Ph.D., professor of chemistry at The Catholic University of America. Bunce explains, for instance, why vinegar is so important for eggshells to take up dye. Eggshells ...