Los estallidos de supernovas pudieron provocar incrementos en la diversidad de las formas de vida en la Tierra y cambios climáticos extremos ||| Fuente : http://feedproxy.google.com/~r/materia/noticias/~3...

Getting enough to eat is a basic human need -- but at what cost to the environment? Research published in BioMed Central's journal Agriculture & Food Security demonstrates that as their crops on higher ground fail due to unreliable rainfall, people in countries like Uganda are increasingly...

Scientists at the Gladstone Institutes have discovered that a certain type of DNA damage long thought to be particularly detrimental to brain cells can actually be part of a regular, non-harmful process. The team further found that disruptions to this process occur in mouse models of Alzheimer's...

What is it about the extra chromosome inherited in Down syndrome -- chromosome 21 -- that alters brain and body development? Researchers at Sanford-Burnham Medical Research Institute have new evidence that points to the protein SNX27. SNX27 is inhibited by a molecule encoded on chromosome 21. The...

Rapidly growing trees like poplars and willows are candidate "biofuel crops" from which it is expected that cellulosic ethanol and higher energy content fuels can be efficiently extracted. Domesticating these crops requires a deep understanding of tree physiology and genetics. Scientists are...

A female great tits' (Parus major) appearance is shown to signal healthy attributes in offspring in a paper in BioMed Central's open access journal Frontiers in Zoology. The black stripe across her breast and white patches on her cheeks correlate to a chick's weight at two weeks and immune strength respectively -- though the...

Stem cells taken from amniotic fluid were used to restore gut structure and function following intestinal damage in rodents, in new research published in the journal Gut. The findings pave the way for a new form of cell therapy to reverse serious damage from inflammation in the intestines of babies. Fuente :...

A drug widely used to treat Parkinson's disease can help to reverse age-related impairments in decision making in some older people, a study from researchers at the Wellcome Trust Centre for Neuroimaging has shown. Fuente : http://www.eurekalert.org/pub_releases/2013-03/wt-...

New research led by scientists at Dana-Farber Cancer Institute, the Broad Institute, and other research centers, may offer clues to why rates of esophageal adenocarcinomas (EAC) have risen so sharply. The findings point to abnormal genes and proteins that may be lynchpins of EAC cell growth and...

Actin, a protein with a well-known job in the cytoplasm and an active role in muscle contraction, moonlights in the nucleus. It's function there was not understood, but now MD Anderson and Colorado State University scientists find that it connects with chromatin. Fuente :...

Research conducted in fruit flies at the University of North Carolina School of Medicine has pinpointed a specific DNA sequence that both triggers the formation of the "histone locus body" and turns on all the histone genes in the entire block. Fuente : http://www.eurekalert.org/pub_releases/2013-03/uon...

For decades researchers have recorded sounds from whales and other marine mammals, using a variety of methods including passive acoustic monitoring to better understand how these animals use sound to interact with each other and with the environment. Now, for the first time, researchers report...

A genetic analysis has saved a major apple-producing region of Washington state. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/E...

Get out there and regularly kick that soccer ball around with your kids, you may be helping them prevent a broken hip when they are older, say researchers. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/G...

Nerve mapping technology allows surgeons to determine whether surgery has been effective for relieving pressure from compressed nerves, which often function poorly and cause sciatica or pain and weakness in muscles supplied by the nerve. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/M...

Los vendajes neuromusculares que se popularizaron en los Juegos Olímpicos de 2008 siguen triunfando aunque no cuentan con respaldo científico. Un nuevo estudio realizado en España con futbolistas de élite vuelve a negar sus capacidades ||| Fuente :...

Orthopaedic surgeons have debated the effectiveness of the single versus double-bundle method of anterior cruciate ligament (ACL) repair for years. However new data shows both techniques lead to similarly effective outcomes for patients, according to researchers presenting their work today at the...

Outcomes after surgery have always been difficult to determine. Now a new case study on more than 500 hip procedures highlights that complication rates may be even higher than previous reports, say researchers presenting at the American Orthopaedic Society for Sports Medicine's Specialty Day in...

Research presented today at the American Orthopaedic Society for Sports Medicine's Specialty Day in Chicago, Ill., shows that biceps tenodesis surgery is safe and effective for individuals who suffer a SLAP (superior labral anterior posterior) tear of the shoulder. Patients examined had previously...

Get out there and regularly kick that soccer ball around with your kids, you may be helping them prevent a broken hip when they are older, say researchers presenting their work at the American Orthopaedic Society for Sports Medicine's Specialty Day in Chicago, Ill. Fuente :...

Treatment of large cartilage knee defects with an allograft osteoarticular transplant may not allow some military personnel to return to full active duty status, say researchers presenting their work at the American Orthopaedic Society for Sports Medicine's Specialty Day in Chicago, Ill. Fuente :...

Scientists have developed a computer model of a protein that helps cells interact with their surroundings. Like its biological counterpart, the virtual integrin snippet is about twenty nanometers long. It also responds to changes in energy and other stimuli just as integrins do in real life. The...

Some 200 million years ago, an increase in atmospheric CO2 caused acidification of the oceans and global warming that killed off 76 percent of marine and terrestrial species on Earth. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/D...

Research has shown that children at risk of developing schizophrenia have brains that function differently than those not at risk. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/W...

The notion that each gene can only codify for a single protein has been challenged for some years. Yet, the functional outcomes that may result from genes encoding more than one protein are still largely unknown. Now, botanists have discovered a gene -- ZIFL1 -- that produces two different proteins...

Scientists have identified an important mechanism for stimulating protective immune responses following seasonal influenza vaccinations. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/G...

Chronic inflammation can lead to chronic diseases, but it can be reduced naturally through the proper diet. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/l...

Certain Streptococci increase their production of toxic shock syndrome toxin 1, sometimes to potentially dangerous levels, when aerobic bacteria are present in the vagina. But scientists have discovered certain strains of lactobacillus bacteria are capable of dampening production of that toxin....

Recent measurements of the rate at which children show DNA changes not seen in their parents -- the "mutation rate" -- have challenged views about major dates in human evolution. In particular these measurements have made geneticists think again about key dates in human evolution, like when modern...