Escuelas

EurekAlert!

Subscribe to canal de noticias EurekAlert! EurekAlert!
The premier online source for science news since 1996. A service of the American Association for the Advancement of Science.
Actualizado: hace 1 día 4 horas

Majority of HIV persistence during ART due to infected cell proliferation

Jue, 11/15/2018 - 23:00
Study confirms biological mechanism responsible for latent HIV reservoirs; suggests strategies for a functional HIV cure.

From the ashes of a failed pain drug, a new therapeutic path emerges

Jue, 11/15/2018 - 23:00
A surprising discovery about a failed pain drug -- and specifically, the pathway it targets, BH4 -- could have implications for autoimmunity and cancer. Neuroscientists at Boston Children's Hospital and immunologists from IMBA in Vienna report that BH4 also functions as a kind of immunological thermostat, raising and lowering the activity levels of T cells. Inhibiting BH4 could relieve atopic dermatitis, psoriasis, lupus, polyarthritis and inflammatory bowel disease; boosting it could help the immune system attack cancers.

A new lead on a 50-year-old radiation damage mystery

Jue, 11/15/2018 - 23:00
For half a century, researchers have seen loops of displaced atoms appearing inside nuclear reactor steel after exposure to radiation, but no one could work out how.

Drug resistant infections associated with higher in-hospital mortality rates in India

Jue, 11/15/2018 - 23:00
In one of the largest studies to measure the burden of antibiotic resistance in a low- or middle-income country, researchers at the Center for Disease Dynamics, Economics & Policy report that in-hospital mortality is significantly higher among patients infected with multi-drug resistant (MDR) or extensively drug resistant (XDR) pathogens including Staphylococcus aureus, Escherichia coli, Klebsiella pneumoniae and Acinetobacter baumannii.

Dodging antibiotic resistance by curbing bacterial evolution

Jue, 11/15/2018 - 23:00
Lowering mutation rates in harmful bacteria might be an as yet untried way to hinder the emergence of antimicrobial pathogens. One target for drug development might be a protein factor, DNA translocase Mfd, that enables bacteria to evolve rapidly by promoting mutations in many different bacterial species. This action speeds antibiotic resistance, including multi-drug resistance. Working on drugs to block Mfd and similar factors could be a revolutionary strategy to address the worldwide crisis of treatment-resistant infectious diseases.

Selling plants on Amazon: A forest of untapped opportunity

Jue, 11/15/2018 - 23:00
The purpose of this study was to determine the extent to which horticultural businesses were directly selling live plant products online, either through Amazon, Ebay, or from their own websites.

Treated superalloys demonstrate unprecedented heat resistance

Jue, 11/15/2018 - 23:00
Researchers at Idaho National Laboratory have discovered how to make 'superalloys' even more super, extending useful life by thousands of hours. The discovery could improve materials performance for electrical generators and nuclear reactors.

Color coded -- matching taste with color

Jue, 11/15/2018 - 23:00
Color can impact the taste of food, and our experiences and expectations can affect how we taste food, according to Penn State researchers, who suggest this may have implications for how food and beverage industries should market their products.

Organizations with broad social ties help recovering from natural disasters

Jue, 11/15/2018 - 23:00
In order to encourage a wide economic recovery following a natural disaster, communities should think about activating advocacy organizations such as local environmental groups, political organizations and human-rights groups. New businesses alone, do not offset rise in post-disaster poverty levels.

UCLA cell study reveals how head injuries lead to serious brain diseases

Jue, 11/15/2018 - 23:00
UCLA biologists reveal the hidden molecular basis of brain disorders and provide the first cell atlas of the hippocampus -- the part of the brain that helps regulate learning and memory -- as it is affected by traumatic brain injury. The researchers propose gene candidates for treating brain diseases associated with traumatic brain injury such as Alzheimer's disease and post-traumatic stress disorder.

NASA catches Tropical Cyclone Gaja's landfall

Jue, 11/15/2018 - 23:00
Caught in the act of landfall, Tropical Cyclone Gaja was seen by NASA's Aqua satellite as it passed overhead and collected temperature information.

PNW woodlands will be less vulnerable to drought, fire than Rocky Mountain, Sierra forests

Jue, 11/15/2018 - 23:00
Forests in the Pacific Northwest will be less vulnerable to drought and fire over the next three decades than those in the Rocky Mountains and Sierra Nevada, computer modeling shows.

Communal rearing gives mice a competitive edge

Jue, 11/15/2018 - 23:00
Research by scientists at the University of Liverpool suggests that being raised communally makes mice more competitive when they're older.It is well known that in many animals, including humans, early-life experiences have long-lasting effects on the development of behaviours later in life.In a new study published in Scientific Reports, researchers have investigated the effects of communal rearing on competitive and exploratory behaviours in adult male house mice.

Youth dating violence shaped by parents' conflict-handling views, study finds

Jue, 11/15/2018 - 23:00
Parents who talk to their children about nonviolent ways of resolving conflict may reduce children's likelihood of physically or psychologically abusing their dating partners later -- even when parents give contradictory messages indicating that violence is acceptable in certain circumstances, University of Illinois social work professor Rachel Garthe found.

Newly published model of FSHD and a potential gene therapy to improve functional outcomes

Jue, 11/15/2018 - 23:00
Facioscapulohumeral muscular dystrophy (FSHD) is the most prevalent dominantly inherited muscular dystrophy in the world. To date, there are no pharmacologic treatments available for the more than 850,000 people affected worldwide. Developing models to use for testing potential therapeutics has been a challenge for the research community.

Natural constants as the main protagonists

Jue, 11/15/2018 - 23:00
On the occasion of their 26th General Conference on Weights and Measures (CGPM) on Nov. 16, 2018, in Versailles, the signatory states of the Metre Convention resolved to fundamentally reform the International System of Units (SI). This resolution stipulates that, in the future, all SI units will be based on the values laid down for seven selected natural constants.

Human pharmaceuticals change cricket personality

Jue, 11/15/2018 - 23:00
Crickets that are exposed to human drugs that alter serotonin levels in the brain are less active and less aggressive than crickets that have had no drug exposure, according to a new study led by researchers from Linköping University. The findings have been published in Scientific Reports.

New way to look at cell membranes could change the way we study disease

Jue, 11/15/2018 - 23:00
Researchers have developed a new technique to analyse cell membrane proteins in situ which could revolutionise the way in which we study diseases, such as cancer, metabolic and heart diseases.

Scientists produce 3D chemical maps of single bacteria

Jue, 11/15/2018 - 23:00
Researchers at NSLS-II used ultrabright x-rays to generate 3D nanoscale maps of a single bacteria's chemical composition with unparalleled spatial resolution.

Eleven seal species narrowly escaped extinction

Jue, 11/15/2018 - 23:00
Population geneticists at Bielefeld University and the British Antarctic Survey have found that eleven seal species only narrowly escaped extinction. Their study has been published today in Nature Communications.

Páginas