Bethesda, MD -- After many generations, rats bred for their bad attitude behave differently from those selected for a calm demeanor around humans. Research published November 7 in the journal GENETICS identifies gene regions that contribute to differences between nasty and nice rats in their behavior and the activity of genes in the brain. These results may provide important clues as to which genes make tame animals like dogs behave so differently from their wild ancestors. "Tameness is one trait that all domestic animals share. Whether it's pigs or cats or horses, domestication ...

This news release is available in Spanish. Legal restriction of abortion has a negative connotation since the idea of women resorting to illegal abortion -risking their own lives- is strongly rooted in the public opinion worldwide. However, a series of independently peer-reviewed articles, challenge this notion in some countries. The latest data in this subject have been discussed by the Chilean epidemiologist Elard Koch, Director of Research of the MELISA Institute, in the current issue of the official journal of the Chilean Society of Obstetrics and Gynecology. ...

SALT LAKE CITY, Utah, Nov. 7, 2014 - Myriad Genetics, Inc. (Nasdaq: MYGN) today presented results from a prospective clinical utility study of its Myriad myPath Melanoma test at the 2014 American Society of Dermatopathology (ASDP) annual meeting in Chicago, Ill. Myriad myPath Melanoma is a genetic test that differentiates malignant melanoma from benign skin lesions across all major melanoma subtypes. Key findings of this clinical utility study included a 43 percent reduction in indeterminate diagnoses and a 49 percent change in physicians' treatment recommendations for ...

Scientists from the RIKEN BioResource Center in Tsukuba, Japan, have discovered that a single mutation in the beta-catenin gene, which codes a protein known to be deeply involved in a number of developmental and homeostatic processes, can lead to infertility not through a disruption of the production of egg or sperm cells, but rather by leading to abnormalities in the morphology of the sexual organs, making natural reproduction impossible. Beta-catenin is an essential protein in the Wnt/beta-catenin signaling pathway, which has been shown in mice to be involved in the ...

It arises from what scientists previously described as "junk DNA" or "the dark matter of the genome," but this gene is definitely not junk. The gene GAS5 acts as a brake on steroid hormone receptors, making it a key player in diseases such as hormone-sensitive prostate and breast cancer. Unlike many genes scientists are familiar with, GAS5 does not encode a protein. It gets transcribed into RNA, like other genes, but with GAS5 the RNA is what's important, not the protein. The RNA accumulates in cells subjected to stress and soaks up steroid hormone receptors, preventing ...

The present-day extinct ancestors of turtles had a flexible ribcage and breathed, like us, by alternately expanding and contracting the lungs and thorax. The development of a solid shell on the back and belly, however, rendered this kind of respiratory process impossible. Today's turtles breathe with the aid of a muscle sling attached to the shell, which contracts and relaxes to aerate the lungs. An international team of researchers from North American, African and European institutes and museums have now discovered the origin of this muscle sling: in Eunotosaurus africanus, ...

New research published today in the journal Nature Communications, has demonstrated how glass can be manipulated to create a material that will allow computers to transfer information using light. This development could significantly increase computer processing speeds and power in the future. The research by the University of Surrey, in collaboration with the University of Cambridge and the University of Southampton, has found it is possible to change the electronic properties of amorphous chalcogenides, a glass material integral to data technologies such as CDs and ...

A new study suggests that the flightless birds named moa were completely extinct by the time New Zealand's human population had grown to two and half thousand people at most. The new findings, which appear in the prestigious journal Nature Communications, incorporate results of research by international teams involved in two major projects led by Professor Richard Holdaway (Palaecol Research Ltd and University of Canterbury) and Mr Chris Jacomb (University of Otago), respectively. The researchers calculate that the Polynesians whose activities caused moa extinction ...

ATLANTA, GA (November 7, 2014) - Many people have been told, incorrectly, that they're allergic to penicillin, but have not had allergy testing. These people are often given alternative antibiotics prior to surgery to ward off infection. But when antibiotic choices are limited due to resistance, treatment alternatives may be more toxic, more expensive and less effective. According to two studies presented at the American College of Allergy, Asthma and Immunology (ACAAI) Annual Scientific Meeting, people who believe they have a penicillin allergy would benefit from consultation ...

ATLANTA, GA (November 7, 2014) - Asthma symptoms affect an estimated 26 million Americans and are one of the leading causes of work and school absences. People who suffer from asthma know it's a challenge to make sure symptoms are under control at all times. And it's even a challenge to know where to get the best information on how to do that. According to a study presented at the American College of Allergy, Asthma and Immunology (ACAAI) Annual Scientific Meeting, teens and caregivers have different levels of health literacy, and teens don't necessarily get their information ...

ATLANTA, GA (November 7, 2014) - Last year's long, harsh winter was brutal, and caused some experts to predict the "polar vortex" would turn into the "pollen vortex," and make allergy sufferers more miserable than ever before. But the "pollen vortex" didn't happen - at least not everywhere. According to a study presented at the American College of Allergy, Asthma and Immunology (ACAAI) Annual Scientific Meeting, the spring pollen count in Ontario, Canada was not higher than usual, and in fact, was down considerably - and far lower than at any other time in the previous ...

ATLANTA, GA (November 7, 2014) - People who suffer from allergies want to keep up-to-date on the latest information regarding treatment, but it's not always easy. Some doctors don't even know fact from fiction when it comes to treating allergies. According to a study presented at the American College of Allergy, Asthma and Immunology (ACAAI) Annual Scientific Meeting, prevailing allergy myths have a long shelf life. The study surveyed 409 physicians - either in internal medicine or pediatrics - on the topic of treating allergies. The physicians all received six questions ...

ATLANTA, GA (November 7, 2014) - Millions of children across the country need emergency epinephrine at school because they could suffer a severe, potentially life-threatening allergic reaction (anaphylaxis) to food or an insect sting. As schools across the country implement policies to stock emergency epinephrine, some are seeing dramatic results. According to a new study being presented at the American College of Allergy, Asthma and Immunology (ACAAI) Annual Scientific Meeting, stock epinephrine was used on 38 children and adults in Chicago Public Schools (CPS) during ...

Children with asthma and hay fever often struggle with their breathing. Add secondhand smoke, kerosene and biomass fuel to the mix and allergy and asthma symptoms increase. According to a study being presented at the American College of Allergy, Asthma and Immunology (ACAAI) Annual Scientific Meeting in Atlanta, November 6-10, increased levels of asthma and allergic rhinitis (hay fever) were found in children in India who were exposed to more indoor pollutants. The study examined 70 households where no children had symptoms of asthma and/or hay fever, while the other 70 ...

Past research has been inconsistent in determining the relative effects of mouse droppings vs. cockroach exposure on asthma in children. According to a study being presented at the American College of Allergy, Asthma and Immunology (ACAAI) Annual Scientific Meeting in Atlanta, November 6-10, mice infestation is a stronger predictor of asthma symptoms in young children than exposure to cockroaches. The study examined 49 children under the age of 4, residing in the Bronx, New York. Both skin prick testing and blood tests were done to determine allergic response. Children ...

ATLANTA, GA (November 7, 2014) - Coughing, wheezing and shortness of breath are symptoms asthma sufferers are used to. They are also the symptoms of chronic obstructive pulmonary disease (COPD). For sufferers, as well as physicians, it can be difficult to tell the difference between the two conditions. According to a presentation at the American College of Allergy, Asthma and Immunology (ACAAI) Annual Scientific Meeting, as many as 50 percent of older adults with obstructive airway disease have overlapping characteristics of asthma and COPD. And this percentage increases ...

AUDIO: In the first study comparing packed lunches to National School Lunch Program lunches, researchers from Virginia Tech found that school lunches have greater nutritional quality. Findings suggest that nutrition education... Click here for more information. PHILADELPHIA, PA, November 7, 2014 - Approximately 60% of the more than 50 million public elementary and secondary education students obtain a substantial portion of their daily calories from school lunches. The 2012-2013 ...

AUDIO: In a systematic, in-depth review focused on the use of behavior theory in interventions aimed to increase fruit and vegetable intake among children, researchers found theory-based interventions to be beneficial... Click here for more information. PHILADELPHIA, PA, November 7, 2014 - Researchers try to develop interventions that are most likely to work. Some times that involves deciding which activities should be included, such as whether to have cooking classes or be ...

An experimental drug aimed at treating a common liver disease showed promising results and potential problems in a multicenter clinical trial funded by the National Institutes of Health. The FLINT study found that people with nonalcoholic steatohepatitis (NASH) who took obeticholic acid (OCA) had improved liver health during that period, including decreased inflammation and fat in the liver and decreased body weight versus people receiving a placebo. OCA was also associated with increases in itching and total cholesterol. The findings of FLINT, or the Farnesoid X Receptor ...

Astronomers using NASA's Hubble Space Telescope have completed the largest and most sensitive visible-light imaging survey of dusty debris disks around other stars. These dusty disks, likely created by collisions between leftover objects from planet formation, were imaged around stars as young as 10 million years old and as mature as more than 1 billion years old. "It's like looking back in time to see the kinds of destructive events that once routinely happened in our solar system after the planets formed," said survey leader Glenn Schneider of the University of Arizona's ...

Philadelphia - Olaparib, an experimental twice-daily oral cancer drug, produces an overall tumor response rate of 26 percent in several advanced cancers associated with BRCA1 and BRCA2 mutations, according to new research co-led by the Abramson Cancer Center of the University of Pennsylvania. The positive response provides new hope for patients with ovarian, breast, pancreatic and prostate cancers whose conditions have not responded to standard therapies. Results of the phase II study are available online in the current issue of the Journal of Clinical Oncology. For ...

TALLAHASSEE, Fla. -- A groundbreaking paper from a team of Florida State University biologists could lead to a better understanding of how plants could adapt to and survive environmental swings such as droughts or floods. The research, published in the latest issue of the journal The Plant Cell, sheds light on how chromatin (the complex of DNA and proteins) is organized in a cell and how plants regulate genetic material, so that some genes are turned on and others are turned off. "If you understand how plants regulate their genetic material, you can possibly manipulate ...

Humane transport of livestock is important for both carcass quality and animal welfare. However, it is difficult to mitigate stress for animals in-transit. During a typical journey, calves lose weight due to the stress of weaning and being withdrawn from feed and water during transport. Many factors contribute to this stress, including welfare of the calves before transportation, and temperature and space allowance inside the trailer during transportation. A better understanding of the pre- and post-transportation risk factors and in-transit factors that influence calf ...

Food waste has become a serious problem in the United States and other countries. Approximately 34 million tons of food waste is deposited in landfills each year in the United States alone (EPA, 2014). The U.S. Environmental Protection Agency has recognized the use of food waste as animal feed as one of the best means to add value to food waste, while reducing landfill costs and greenhouse gas emissions, and at the same time improving food security. In an article published in the November 2014 issue of the Journal of Animal Science ("Nutritional value of ensiled grocery ...

Wheat, along with corn and barley, is one of the three major feed grains used in North America. Most of the feed-class wheat is fed to poultry and swine. Beef producers are reluctant to use large quantities of wheat in diets of feedlot cattle because wheat ferments considerably more rapidly in the rumen than corn or barley and increases the risk of ruminal acidosis, which can compromise the health, wellbeing, and productivity of cattle. In a study published in the November 2014 issue of the Journal of Animal Science ("Impact of hard vs. soft wheat and monensin level on ...