Body

Bats make social alliances that affect roosting behavior

Depending on habitat availability, the endangered Indiana bat may be able to use its social connections to survive a certain amount of roost destruction, according to research by scientists at Virginia Tech and The Ohio State University.

Researchers map genomic differences in yellow fever, malaria mosquitoes

Virginia Tech entomologists have developed a chromosome map for about half of the genome of the mosquito Aedes agypti, the major carrier of dengue fever and yellow fever.

With the map, researchers can compare the chromosome organization and evolution between this mosquito and the major carrier of malaria, the Anopheles gambiae mosquito, to find ways to prevent diseases.

Genetic pathway can slow spread of ovarian cancer

University of Adelaide research into the origins of ovarian cancer has led to the discovery of a genetic pathway that could slow the spread of the cancer.

The discovery is in part due to research into the genetics of humans' most distant mammalian relative, the platypus.

Overweight + gene mutation = elevated liver values in children

A study carried out at the Institute of Biomedicine of the University of Eastern Finland shows that a common mutation in the PNPLA3 gene combined with overweight results in elevated ALAT values in children. The ALAT value is an indicator of liver metabolism. In adults, this gene mutation is known to promote the accumulation of fat in the liver. The new results indicate that a healthy lifestyle is important already in childhood in order to prevent the accumulation of fat in the liver, and it is especially important for those carrying the risk gene.

Brazilian surgeons review experience with soccer-related facial fractures for PRS-GO

June 17,2014- Fractures of the nose and other facial bones are a relatively common and potentially serious injury in soccer players, reports a Brazilian study in Plastic and Reconstructive Surgery—Global Open® , the official open-access medical journal of the American Society of Plastic Surgeons (ASPS).

Researchers identify mechanism that could help old muscle grow

[Boston, MA June 17, 2014]─ Sarcopenia – the significant loss of muscle mass and function that can occur as we age – is associated with many chronic conditions such as diabetes, high cholesterol and obesity. In findings published online ahead of publication in the September 2014 issue of the FASEB Journal, researchers at the Jean Mayer USDA Human Nutrition Research Center on Aging at Tufts University identify a muscle-building mechanism that could be important in addressing sarcopenia.

Hearing protein required to convert sound into brain signals

HEIDELBERG, 17 June 2014 – A specific protein found in the bridge-like structures that make up part of the auditory machinery of the inner ear is essential for hearing. The absence of this protein or impairment of the gene that codes for this protein leads to profound deafness in mice and humans, respectively, reports a team of researchers in the journal EMBO Molecular Medicine.

The American College of Chest Physicians releases updated PAH guidelines

June 17, 2014, Glenview, Illinois--The American College of Chest Physicians (CHEST) announced today the Online First publication of Pharmacological Therapy for Pulmonary Arterial Hypertension in Adults: CHEST Guideline in the journal CHEST. Pulmonary arterial hypertension (PAH), a rare form of pulmonary hypertension, can strike anyone, but individuals with connective tissue diseases such as scleroderma, liver disease, or HIV infection, are more likely than the general population to have PAH.

Breast cancer diagnosis, mammography improved by considering patient risk: INFORMS paper

A new approach to examining mammograms that takes into account a woman's health risk profile would reduce the number of cancer instances missed and also cut the number of false positives, according to a paper being presented at a conference of the Institute for Operations Research and the Management Sciences (INFORMS).

Gut bacteria predict survival after stem cell transplant, study shows

(WASHINGTON, June 17, 2014) – New research, published online today in Blood, the Journal of the American Society of Hematology, suggests that the diversity of bacteria in the gastrointestinal tract of patients receiving stem cell transplants may be an important predictor of their post-transplant survival.

Three parents and a baby

Mitochondria are cell organelles located within animal and human cells. They produce energy for the organism, possess their own genetic material - mitochondrial DNA (mtDNA) - and are transmitted exclusively by the mother. Depending on their activity and tasks, different numbers of mitochondria are present in a cell - usually a few hundred to a thousand per body cell.

Study: In wild yak society, moms are the real climbers

NEW YORK (June 17, 2014) – A new study led by the Wildlife Conservation Society says that in wild yak societies, it's the mothers that are the real climbers. The study found that mothers with young venture on steeper terrain and slightly higher elevation than either males or females without young.

The authors of the study expect that this strategy is an adaptive way to avoid predators and to access more nutritious food. Wild yaks are an endangered species occurring only on the Tibetan Plateau and closely related to North American bison.

Promising T cell therapy

This news release is available in German.

Research at Granada finds that the eye's optical quality deteriorates after alcohol consumption

A study conducted by the University of Granada has scientifically proven that alcohol consumption markedly impairs night-vision because it increases the perception of halos—luminous circles—and other visual night-time disturbances. Moreover, this deterioration of vision is significantly greater in subjects with breath alcohol content in excess of 0.25mg/litre—the legal limit for driving in Spain and other countries and, also, that recommended by the World Health Organization (WHO).

Genetics of sex -- beyond just birds and bees

BETHESDA, MD – June 17, 2014 – Sex is everywhere in nature. Whether it's a male bird singing to mark his territory or a tiny yeast cell secreting chemicals to attract the opposite mating type, sex has profoundly shaped the appearance, behavior and evolution of many organisms. The genetic and evolutionary forces underlying sex differences and sex determination are crucial for understanding much of the natural world, including human biology.