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Latest National Academy of Sciences Stories

2014-04-01 13:13:29

Scientists have for the first time come closer to understanding how a clone of E. coli, described as the most important of its kind to cause human infections, has spread across the world in a very short time. E. coli clone ST131 is one of the leading causes of urinary tract and blood stream infections and has crossed the globe at a rapid rate. Worryingly, members of this clone are becoming more resistant to antibiotics. As an indication of scale, more than half of all women will suffer a...

2014-04-01 13:11:34

Johns Hopkins researchers say that an experimental anticancer compound appears to have reversed behaviors associated with schizophrenia and restored some lost brain cell function in adolescent mice with a rodent version of the devastating mental illness. The drug is one of a class of compounds known as PAK inhibitors, which have been shown in animal experiments to confer some protection from brain damage due to Fragile X syndrome, an inherited disease in humans marked by mental...

2014-04-01 13:02:44

Antibiotics being explored for the treatment of cystic fibrosis and muscular dystrophy have the potential to trigger autoimmune disease The code for every gene includes a message at the end of it that signals the translation machinery to stop. Some diseases, such as cystic fibrosis and Duchenne muscular dystrophy, can result from mutations that insert this stop signal into the middle of an essential gene, causing the resulting protein to be truncated. Some antibiotics cause the cell's...

2014-03-17 23:01:19

A University of Maryland professor's 39-year tally of two million wildflower blooms shows a complex series of changes due to a warmer climate, with probable ripple effects for birds, bees and other animals. (PRWEB) March 17, 2014 A unique 39-year study of wildflower blooms in a Colorado Rocky Mountain meadow shows more than two-thirds of alpine flowers have changed their blooming pattern in response to climate change. Not only are half the flowers beginning to bloom weeks earlier, but...

2014-03-04 16:23:09

Researchers at New Zealand's University of Otago are helping to clear up an enduring mystery regarding the composition of the Earth's atmosphere. They have discovered the microbial soil processes that help ensure that the explosive gas hydrogen remains at trace levels. In recent decades it was found that around four-fifths of all hydrogen released into the air is rapidly removed through soil activity, but exactly what is recycling it, and how, has remained unclear. Now, Otago scientists...

2014-03-04 16:03:43

Researchers at New York University and the University of Texas at Austin have discovered that carbohydrates serve as identifiers for cancer cells. Their findings, which appear in the journal Proceedings of the National Academy of Sciences, show how these molecules may serve as signals for cancer and explain what's going on inside these cells, pointing to new ways in which sugars function as a looking glass into the workings of their underlying structures. "Carbohydrates can tell us a lot...

2014-03-04 14:17:18

The enzyme PP1 has a key role in many of the body’s healthy functions and diseases. It’s so generally important that drug developers dare not target it. In a new study in the Proceedings of the National Academy of Sciences, Brown University scientists report a big leap in understanding how PP1 interacts with other proteins to behave specifically in distinct situations. That could lead to medicines that target it for precise benefits. In the Proceedings of the National Academy of...

2014-03-04 14:06:51

New Keck School of Medicine of USC research finds vascular damage in mice with ALS contributes to early development of the neurodegenerative disease, while repairing damage delays disease progression Keck School of Medicine of USC neuroscientists have unlocked a piece of the puzzle in the fight against Lou Gehrig's disease, a debilitating neurological disorder that robs people of their motor skills. Their findings appear in the March 3, 2014, online edition of the Proceedings of the...

2014-03-04 14:02:17

The surface of the sea takes up nitrogen oxides that build up in polluted air at night, new measurements on the coast of southern California have shown. The ocean removes about 15 percent of these chemicals overnight along the coast, a team of atmospheric chemists reports in the early online edition of the Proceedings of the National Academy of Sciences the week of March 3. Nitrogen oxides, formed by the burning of fossil fuels, generate photochemical smog. Atmospheric chemists would like...

2014-03-04 14:00:07

New study: Worldwide spread of a standard globalized diet is putting more food on the dinner table, but at the expense of diverse local crops; global uniformity heightens the risk of food crises due to climate change A comprehensive new study of global food supplies confirms and thoroughly documents for the first time what experts have long suspected: over the last five decades, human diets around the world have grown ever more similar—by a global average of 36 percent—and the trend...


Word of the Day
blee
  • Color; hue; complexion.
This word is Middle English in origin.
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