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Inherited DNA change explains overactive leukemia gene

  • An overactive BAALC gene in acute leukemia cells identifies patients whose disease is likely to respond poorly to standard therapy.
  • This study discovered why the gene is often overactive.
  • The findings may provide a prognostic marker that can help guide therapy in these patients.

COLUMBUS, Ohio – A small inherited change in DNA is largely responsible for overactivating a gene linked to poor treatment response in people with acute leukemia.

World Health Assembly endorses new plan to increase global access to vaccines

Geneva, Switzerland – May 25, 2012 – Ministers of Health from 194 countries at the Sixty-fifth World Health Assembly today endorsed a landmark Global Vaccine Action Plan (GVAP), a roadmap to prevent millions of deaths by 2020 through more equitable access to existing vaccines for people in all communities.

A new invading sea crab reaches the Ebro Delta

Originally endemic to the Atlantic Coast of North America, over the past 30 years Dyspanopeus sayi has been involuntarily introduced in the UK, France, the Netherlands, the Black Sea and the Adriatic Sea. A study shows that in recent years the sea crab has established itself along the Western Mediterranean Coast.

Like curry? New biological role identified for compound used in ancient medicine

CORVALLIS, Ore. – Scientists have just identified a new reason why some curry dishes, made with spices humans have used for thousands of years, might be good for you.

New research at Oregon State University has discovered that curcumin, a compound found in the cooking spice turmeric, can cause a modest but measurable increase in levels of a protein that's known to be important in the "innate" immune system, helping to prevent infection in humans and other animals.

Obese patients face increased risk of kidney damage after heart surgery

Highlights

  • Obese patients have an increased risk of developing kidney damage, or acute kidney injury, after heart surgery.
  • Oxidative stress associated with obesity seems to play a role in this increased risk.

Acute kidney injury affects 5% to 30% of heart surgery patients.

Gene study could pave way for non-hormonal male contraceptive

A new type of male contraceptive could be created thanks to the discovery of a key gene essential for sperm development.

The finding could lead to alternatives to the conventional male contraceptives that rely on disrupting the production of hormones, such as testosterone. These treatments can cause side-effects such as irritability, mood swings and acne.

Research, led by the University of Edinburgh, has shown how a gene – Katnal1 – is critical to enable sperm to mature in the testes.

Gene discovery points towards new type of male contraceptive

A new type of male contraceptive could be created thanks to the discovery of a key gene essential for sperm development.

The finding could lead to alternatives to conventional male contraceptives that rely on disrupting the production of hormones, such as testosterone and can cause side-effects such as irritability, mood swings and acne.

Research, led by the University of Edinburgh, has shown how a gene – Katnal1 – is critical to enable sperm to mature in the testes.

New clues about cancer cell metabolism emerge

For almost a century, researchers have known that cancer cells have peculiar appetites, devouring glucose in ways that normal cells do not. But glucose uptake may tell only part of cancer's metabolic story. Researchers from the Broad Institute and Massachusetts General Hospital looked across 60 well-studied cancer cell lines, analyzing which of more than 200 metabolites were consumed or released by the fastest dividing cells. Their research yields the first large-scale atlas of cancer metabolism and points to a key role for the smallest amino acid, glycine, in cancer cell proliferation.

Gourmet butterflies speed north

A new study led by scientists in the Department of Biology at the University of York has shown how a butterfly has changed its diet, and consequently has sped northwards in response to climate change.

Their study is published in the latest issue of Science.

The cells' petrol pump is finally identified

Our cells breathe and digest, as does the organism as a whole. They indeed use oxygen to draw the energy contained in the nutrients they ingest, before discarding the waste, as carbon dioxide and water. Glucose is a preferred nutrient for the cells. Its digestion occurs in the cytoplasm, in the absence of oxygen, and leads to the formation of pyruvate and a small amount of energy. Pyruvate is then carried into mitochondria, the cell's power plants, for a complete burning, thus providing a maximal energetic yield.

A mediocre energetic yield in tumor cells

Nanoparticles seen as artificial atoms

Zheng is the corresponding author of a paper describing this research in the journal Science. The paper is titled "Real-Time Imaging of Pt3Fe Nanorod Growth in Solution." Co-authors are Hong-Gang Liao, Likun Cui and Stephen Whitelam.

Pivotal role for proteins -- from helping turn carbs into energy to causing devastating disease

(SALT LAKE CITY)—Research into how carbohydrates are converted into energy has led to a surprising discovery with implications for the treatment of a perplexing and potentially fatal neuromuscular disorder and possibly even cancer and heart disease.

Discarded data may hold the key to a sharper view of molecules

CORVALLIS, Ore. — There's nothing like a new pair of eyeglasses to bring fine details into sharp relief. For scientists who study the large molecules of life from proteins to DNA, the equivalent of new lenses have come in the form of an advanced method for analyzing data from X-ray crystallography experiments.

The findings, just published in the journal Science, could lead to new understanding of the molecules that drive processes in biology, medical diagnostics, nanotechnology and other fields.

Cyber exercise partners help you go the distance

EAST LANSING, Mich. — A new study testing the benefits of a virtual exercise partner shows the presence of a moderately more capable cycling partner can significantly boost the motivation – by as much as 100 percent – to stick to an exercise program.

The research out of Michigan State University's Department of Kinesiology shows women taking part in cycling exercises exercised twice as long when working with a virtual partner, results the authors said can be used to help people meet physical activity recommendations.

Childhood cancer scars survivors later in life

CHICAGO--- Scars left behind by childhood cancer treatments are more than skin-deep. The increased risk of disfigurement and persistent hair loss caused by childhood cancer and treatment are associated with emotional distress and reduced quality of life in adulthood, according to a new study led by a Northwestern Medicine advanced practice nurse, Karen Kinahan, and based on data from the Childhood Cancer Survivor Study (CCSS).