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Latest National Academy of Sciences Stories

2012-08-21 01:25:21

A new study suggests that a polyclonal antibody that blocks follicle-stimulating hormone (FSH) in mice without ovaries might offer a more effective way to prevent or arrest osteoporosis than currently available treatments. The study used a mouse model of menopause to show that an injection of a polyclonal antipeptide antibody enhances bone regeneration by simultaneously slowing bone destruction and building bone, say researchers at the Mount Sinai School of Medicine, New York. In addition,...

2012-08-21 00:59:09

A new statistical model predicts that by 2100 the number of people older than 85 worldwide will increase more than previously estimated, and there will be fewer working-age adults to support them than previously expected. The findings, reported by researchers at the University of Washington and the United Nations, suggest an even greater decrease in the coming decades in support for social security programs for elderly adults. Lead author Adrian Raftery, UW professor of statistics and...

2012-08-21 00:26:39

Scientists have discovered that a space inside a special type of carbon molecule can be used to imprison other smaller molecules such as hydrogen or water. The nano-meter sized cavity of the hollow spherical C60 Buckminsterfullerene – or bucky ball – effectively creates a 'nanolaboratory', allowing detailed study of the quantum mechanical principles that determine the motion of the caged molecule, including the mysterious wave-like behaviour that is a fundamental property of...

2012-08-13 15:02:34

A targeted approach to treating toxoplasmosis, a parasitic disease, shows early promise in test-tube and animal studies, where it prevented the parasites from making selected proteins. When tested in newly infected mice, it reduced the number of viable parasites by more than 90 percent, researchers from the University of Chicago Medicine report in the Proceedings of the National Academy of Sciences. This precisely focused therapy combines short strands of "antisense" nucleic acid-like...

2012-08-13 14:50:23

If a hurricane's path carries it over large areas of fresh water, it will potentially intensify 50 percent faster than those that do not pass over such regions, meaning it has greater potential to become a stronger storm and be more devastating, according to a study co-written by a group of researchers at Texas A&M University. Ping Chang, professor of oceanography and atmospheric sciences and director of the Texas Center for Climate Studies, along with his former student, Karthik...

2012-08-07 10:19:21

The study of muscular system protein myostatin has been of great interest to researchers as a potential therapeutic target for people with muscular disorders. Although much is known about how myostatin affects muscle growth, there has been disagreement about what types of muscle cells it acts upon. New research from a team including Carnegie's Chen-Ming Fan and Christoph Lepper narrows down the field to one likely type of cell. Their work is published the week of August 6 by Proceedings of...

2012-08-07 10:17:50

University of Kentucky researchers, led by Dr. Jayakrishna Ambati, have made an exciting finding in the "dry" form of age-related macular degeneration known as geographic atrophy (GA). GA is an untreatable condition that causes blindness in millions of individuals due to death of retinal pigmented epithelial cells. The paper, "ERK1/2 Activation is a Therapeutic Target in Age-Related Macular Degeneration" appears in the current online issue of the premier journal Proceedings of the National...

2012-08-07 10:03:53

A new genetic analysis focusing on Jews from North Africa has provided an overall genetic map of the Jewish Diasporas. The findings support the historical record of Middle Eastern Jews settling in North Africa during Classical Antiquity, proselytizing and marrying local populations, and, in the process, forming distinct populations that stayed largely intact for more than 2,000 years. The study, led by researchers at Albert Einstein College of Medicine of Yeshiva University, was published...

2012-08-07 10:02:05

Scientists at the Gladstone Institutes have discovered that an FDA-approved anti-epileptic drug reverses memory loss and alleviates other Alzheimer's-related impairments in an animal model of the disease. Scientists in the laboratory of Lennart Mucke, MD, who directs neurological research at Gladstone, conducted the research on mice genetically modified to simulate key aspects of Alzheimer's disease. In the study, they show how levetiracetam–a drug commonly prescribed for patients...

2012-08-07 09:59:57

Hearing generic language to describe a category of people, such as "boys have short hair," can lead children to endorse a range of other stereotypes about the category, a study by researchers at New York University and Princeton University has found. Their research, which appears in the Proceedings of the National Academy of Sciences (PNAS), also points to more effective methods to reduce stereotyping and prejudice. The study focused on "social essentialism," or the belief that certain...


Word of the Day
endocarp
  • The hard inner (usually woody) layer of the pericarp of some fruits (as peaches or plums or cherries or olives) that contains the seed.
This word comes from the Greek 'endon,' in, within, plus the Greek 'kardia,' heart.
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