Boston, MA -- Vasectomy was associated with a small increased risk of prostate cancer, and a stronger risk for advanced or lethal prostate cancer according to a new study from Harvard School of Public Health (HSPH). The researchers found that the association remained even among men who received regular PSA screening, suggesting the increased risk of lethal cancer cannot be explained by diagnostic bias. It is the largest and most comprehensive study to date to look at the link between vasectomy and prostate cancer. The study appears online July 7, 2014 in Journal of Clinical ...

Bacteria found in the bladders of healthy women differ from bacteria in women with a common form of incontinence, according to researchers from Loyola University Chicago Stritch School of Medicine. These findings, published July 9, 2014, in the American Society for Microbiology's online journal mBio, suggest that bacterial communities may play a role in female urinary health. "Urgency urinary incontinence (UUI) is a common, yet poorly understood, condition with symptoms similar to urinary tract infections," said Alan Wolfe, PhD, co-investigator and professor of Microbiology ...

As anybody who has started a campfire by rubbing sticks knows, friction generates heat. Now, computer modeling by NASA scientists shows that friction could be the key to survival for some distant Earth-sized planets traveling in dangerous orbits. The findings are consistent with observations that Earth-sized planets appear to be very common in other star systems. Although heat can be a destructive force for some planets, the right amount of friction, and therefore heat, can be helpful and perhaps create conditions for habitability. "We found some unexpected good news ...

Understanding the sun from afar isn't easy. How do you figure out what powers solar flares – the intense bursts of radiation coming from the release of magnetic energy associated with sunspots – when you must rely on observing only the light and particles that make their way to near-Earth's orbit? One answer: you get closer. NASA's MESSENGER spacecraft -- which orbits Mercury, and so is as close as 28 million miles from the sun versus Earth's 93 million miles -- is near enough to the sun to detect solar neutrons that are created in solar flares. The average lifetime for ...

RESEARCH TRIANGLE PARK, NC, July 9, 2014 – The spread of damaging invasive forest pests is only partially powered by the insects' own wings. People moving firewood for camping can hasten and widen the insects' spread and resulting forest destruction. A new U.S. Forest Service study gives state planners a tool for anticipating the most likely route of human-assisted spread they can use to enhance survey and public education efforts. The study, "Using a Network Model to Assess Risk of Forest Pest Spread via Recreational Travel," was published July 9 in the journal PLOS ...

Scientists from the Spanish National Cancer Research Centre (CNIO) have discovered that NANOG, an essential gene for embryonic stem cells, also regulates cell division in stratified epithelia—those that form part of the epidermis of the skin or cover the oesophagus or the vagina—in adult organisms. According to the conclusions of the study, published in the journal Nature Communications, this factor could also play a role in the formation of tumours derived from stratified epithelia of the oesophagus and skin. The pluripotency factor NANOG is active during just two days ...

LA JOLLA-The ability to switch out one gene for another in a line of living stem cells has only crossed from science fiction to reality within this decade. As with any new technology, it brings with it both promise--the hope of fixing disease-causing genes in humans, for example--as well as questions and safety concerns. Now, Salk scientists have put one of those concerns to rest: using gene-editing techniques on stem cells doesn't increase the overall occurrence of mutations in the cells. The new results were published July 3 in the journal Cell Stem Cell. "The ability ...

WEST LAFAYETTE, Ind. - Regulated deer hunts in Indiana state parks have helped restore the health of forests suffering from decades of damage caused by overabundant populations of white-tailed deer, a Purdue study shows. A research team led by Michael Jenkins, associate professor of forest ecology, found that a 17-year-long Indiana Department of Natural Resources policy of organizing hunts in state parks has successfully spurred the regrowth of native tree seedlings, herbs and wildflowers rendered scarce by browsing deer. Jenkins said that while hunting may be unpopular ...

Using an innovative tool that captures heretofore hidden ways that cells are regulated, scientists at Rockefeller University have identified a protein that makes breast cancer cells more likely to metastasize. What's more, the protein appears to trigger cancer's spread in part by blocking two other proteins that are normally linked to neurodegeneration, a finding that suggests these two disease processes could have unexpected ties. The study, which appears in the July 10 issue of Nature, points to the possibility of new cancer therapies that target this "master regulator" ...

As climate change shifts the geographic ranges in which animals can be found, concern mounts over the effect it has on their parasites. Does an increased range for a host mean new territory for its parasites as well? Not necessarily, says a team of UC Santa Barbara scientists, including parasitologists Ryan Hechinger and Armand Kuris. In a study published in the Journal of Biogeography, Hechinger, Kuris and colleagues show that for some species, the opposite may happen: Hosts may actually lose their parasites when the hosts shift or increase their range. Theirs is one ...

Cellphone metadata has been in the news quite a bit lately, but the National Security Agency isn't the only organization that collects information about people's online behavior. Newly downloaded cellphone apps routinely ask to access your location information, your address book, or other apps, and of course, websites like Amazon or Netflix track your browsing history in the interest of making personalized recommendations. At the same time, a host of recent studies have demonstrated that it's shockingly easy to identify unnamed individuals in supposedly "anonymized" data ...

NOAA's GOES-West and NASA-JAXA's Global Precipitation Measurement or GPM mission satellite helped forecasters at the National Hurricane Center determine that what was once Tropical Storm Fausto is now a remnant area of low pressure in the Eastern Pacific Ocean. Forecaster Beven at the National Hurricane Center (NHC) noted that "satellite imagery, overnight scatterometer data, and a recent GPM satellite microwave overpass indicate that Fausto has degenerated to a trough of low pressure." On July 9 at 1500 UTC (11 a.m. EDT) Fausto's circulation was no longer apparent ...

Researchers from The Cancer Genome Atlas (TCGA) Research Network have identified novel mutations in a well-known cancer-causing pathway in lung adenocarcinoma, the most common subtype of lung cancer. Knowledge of these genomic changes may expand the number of possible therapeutic targets for this disease and potentially identify a greater number of patients with treatable mutations because many potent cancer drugs that target these mutations already exist. TCGA is jointly funded and managed by the National Cancer Institute (NCI) and the National Human Genome Research ...

ITHACA, N.Y. – Although feelings are personal and subjective, the human brain turns them into a standard code that objectively represents emotions across different senses, situations and even people, reports a new study by Cornell University neuroscientist Adam Anderson. "We discovered that fine-grained patterns of neural activity within the orbitofrontal cortex, an area of the brain associated with emotional processing, act as a neural code which captures an individual's subjective feeling," says Anderson, associate professor of human development in Cornell's College ...

In an era of increasing concern about the prevalence of antibiotic-resistant illness, Case Western Reserve researchers have identified a promising new pathway to disabling disease: blocking bacteria's access to iron in the body. The scientists showed how bacterial siderophore, a small molecule, captures iron from two abundant supply sources to fan bacterial growth — as well as how the body launches a chemical counterassault against this infection process. Their findings appear in a recent edition of The Journal of Experimental Medicine. "Bacterial siderophore will be ...

URBANA, Ill. – With over 100 diseases that can attack soybean crops, why would charcoal rot rise to the top of the most wanted list? University of Illinois scientists cite the earth's changing climate as one reason that more research is needed on the fungus that causes charcoal rot. Fungi may often be associated with cool, damp growing conditions but Macrophomina phaseolina, the fungus that causes charcoal rot, prefers hot and dry drought conditions. "As the climate continues to change and we see more extremes in the weather, including hotter, drier summers, this fungus ...

RIVERSIDE, Calif. — Sexual selection refers to species' selection for traits that are attractive to the opposite sex. This special type of natural selection enhances opportunities to mate, the tail of male peacocks being an iconic example. Biologists at the University of California, Riverside have now found that sexual selection and "placentation" — the formation of a placenta — are linked. Describing the life histories of more than 150 species of fish in the family Poeciliidae, the researchers found that species with placentas tend to have males that do not have bright ...

Tampa, Fla. (July 9, 2014) – Emerging fungal pathogens pose a greater threat to biodiversity than any other parasitic group, causing population declines of amphibians, bats, corals, bees and snakes. New research from the University of South Florida published in the prestigious journal Nature reveals that amphibians can acquire behavioral or immunological resistance to a deadly chytrid fungus implicated in global amphibian population declines. "Acquired resistance is important because it is the basis of vaccination campaigns based on 'herd immunity', where immunization ...

New findings from Fox Chase Cancer Center paint a relatively optimistic picture of women's chances of surviving a subset of breast cancers that have spread to the chest wall or skin, but not beyond. Tumors that grow into the skin, regardless of size and whether they have involved lymph nodes, are automatically classified as stage III – and called "locally advanced" tumors, suggesting that they are a relatively serious form of cancer, often with poor survival. Locally advanced breast cancers of this and other types account for five to ten percent of new breast cancer ...

DALLAS – July 9, 2014 – There has been a sharp increase in the number of cancer patients at UT Southwestern Medical Center using MyChart, the online, interactive service that allows patients to view laboratory and radiology results, communicate with their healthcare providers, schedule appointments, and renew prescriptions. Over a six-year period, the number of patients actively using MyChart each year increased five-fold, while the number of total logins each year increased more than 10-fold, according to a study by Dr. David Gerber, Associate Professor of Internal Medicine, ...

A first-ever global census of Adélie penguins shows that the population is 3.79 million breeding pairs or 53 percent larger than previously estimated. Adélie penguins have long been considered a key indicator species to monitor and understand the effects of climate change and fishing in the Southern Ocean. By using high-resolution satellite imagery, researchers from Stony Brook University and University of Minnesota have applied a new method that permits regular monitoring of Adélie penguins across their entire breeding range, and by extension the health of the Southern ...

The re-examination of a sparrow-sized fossil from China challenges the commonly held belief that birds evolved from ground-dwelling theropod dinosaurs that gained the ability to fly. The birdlike fossil is actually not a dinosaur, as previously thought, but much rather the remains of a tiny tree-climbing animal that could glide, say American researchers Stephen Czerkas of the Dinosaur Museum in Blanding, Utah, and Alan Feduccia of the University of North Carolina. The study appears in Springer's Journal of Ornithology. The fossil of the Scansoriopteryx (which means "climbing ...

The U.S. may be on the verge of an economy driven by methane, the primary component of natural gas, which burns cleaner than coal and is undergoing a production boom. It has poised the country as a top fuel producer globally, but recent research is casting serious doubts over just how climate-friendly it is, according to an article in Chemical & Engineering News (C&EN), the weekly news magazine of the American Chemical Society. In the article, Jeff Johnson, a senior correspondent at C&EN, explains that when burned as a fuel to produce electricity, methane emits about ...

NEW YORK (July 8, 2014) – Researchers from Montefiore Medical Center and the Albert Einstein College of Medicine of Yeshiva University will present new findings at the Alzheimer's Association International Conference (AAIC) being held July 12 – July 17 in Copenhagen, Denmark. Data from the four abstracts will focus on triggers that could prompt transition from cognitive normality to mild cognitive impairment and dementia. The research is part of the Einstein Aging Study, established in 1980 to examine healthy brain aging as well as the special challenges of Alzheimer's ...

KNOXVILLE—Amphibian declines and extinctions around the world have been linked to an emerging fungal disease called chytridiomycosis, but new research from the National Institute for Mathematical and Biological Synthesis (NIMBioS) shows that another pathogen, ranavirus, may also contribute. In a series of mathematical models, researchers showed that ranavirus, which causes severe hemorrhage of internal organs in frogs, could cause extinction of isolated populations of wood frogs if they are exposed to the virus every few years, a scenario that has been documented in ...