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Are one-third of costly implanted heart devices unnecessary? New study suggests yes

...very Medicare participant who qualified for an ICD under current guidelines received one, it would cost the...es hope that their study -- and larger studies now under way or planned -- will lead to routine use of MTWA testing, which is much like a standard treadmill ...

Stem cells act through multiple mechanisms to benefit mice with neurodegenerative disease

...onal neuronal replacement can be complemented and, under some conditions, eclipsed by a range of other stem cell actions that nevertheless exert a number of critical stabilizing forces," said Dr. Snyder, director of Stem Cells and Regeneration at Burnham. "In fact, our study offers the first evidence that ...

Synthetic peptide targets latent papilloma virus infections

...d that 75 percent of sexually active men and women under 50 have, or have had, an HPV infection, while 10,000 women annually develop cervical cancer, more than 90 percent of which is caused by HPV. Four thousand women die of cervical cancer each year. Once infected, it's difficult to rid oneself of the v...

UTSA researchers examine effects of global warming on Antarctic

...an depths. Now with one trip to the Antarctic under their belt, Xie and Cicek are enlisting the help of world-renowned sea ice expert Stephen Ackley to assist in the analysis of the data in UTSA's Laboratory for Remote Sensing and Geoinformatics. Ackley, with more than 30 years as a government scient...

How fish species suffer as a result of warmer waters

...t of water temperature on the biology of organisms under question. A new investigation, just published in t...y factor limiting the stock size of a fish species under heat stress. Scientists of the Alfred Wegener Institute for Polar and Marine Research in Bremerha...

Renegade RNA -- Clues to cancer and normal growth

...re no bit of it has gone before, and it gets there under its own internal code. A report on the renegade ribonucleic acid, and the code that directs its movement, will be published Jan. 5 in Science. MicroRNAs, already implicated in cancer and normal development, latch on to and gum up larger strands o...

Genetic pathways to curable and incurable forms of pancreatic cancer identified

...ctal pancreatic cancer can look very much the same under the microscope, involve the same constellation of genetic events, and culminate in invasive and metastatic disease that can ultimately kill patients, one route is 100 percent fatal while the other is 50 percent curable," Hingorani said. "Until now we...

New protein inhibitor impedes growth of cancerous cells

...lves. Because central aspects of cell division are under the control of just a few key kinases, these proteins represent potentially important targets for new cancer therapeutics, but few if any effective inhibitors have been identified as acting specifically and effectively against one particular cell-div...

Study shows hope for early diagnosis of Alzheimer's

...75 percent. Though the study’s accuracy rate is under that 90-percent figure, it still means the test potentially could have great value to physicians and patients and their families, and the results are particularly significant for patients who have limited access to teaching hospitals, where they may ...

Shedding new light on proteorhodopsin

...tributes to a bacterial cell's energy balance only under certain environmental conditions, namely when the ... measuring the pmf of individual illuminated cells under different concentrations of azide or various degrees of lighting, the Berkeley researchers were able...

New study sheds light on 'dark states' in DNA

...ut in twenty picoseconds it would only travel just under a quarter of an inch. Still, a picosecond is not so fast compared to the speed of some chemical reactions in living cells. In tests of single DNA bases, the dark state lasted for 10-150 picoseconds -- much longer than the bright state. The chemists...

ESA launches new project to protect biodiversity

... to the UNCBD. The DIVERSITY project, developed under ESA's Data User Element (DUE) programme, is being carried out in collaboration with the UNCBD Secretariat and UNESCO, which, in addition to being a user, is also the main coordinator between the users and contractors selected by ESA. "With this ac...

UW launches study testing adult stem cells for heart damage repair

...select the subject's own CD34+ stem cells that are under investigation in this trial. The first step in...eive a series of needle shots, typically delivered under the skin in the arm, thigh or abdomen of a commercially produced protein (granulocyte colony stimula...

New cell type identified in cancer development

... always lead to cancer ?only some of the time, and under very specific conditions," says Gao, who is also a member of the Ohio State University Comprehensive Cancer Center. "These cells appear to be a whole new class of cells involved in the development of cancer." The study appears in the Wednesday, M...

Destructive enzyme shows a benevolent side

...at protein. This new study found, however, that under stress conditions, the same enzyme ?while attached to the mRNA ?helps form temporary shelters within the cell called stress granules. There, the mRNA can be protected so that production of the protein can quickly resume whenever the stress ends, perh...

Scientists sequence genome of parasite responsible for common sexually transmitted infection

...that generally requires public health notification under state statutes. By better understanding the parasite's genetic structure, we hope to better understand how best to prevent and/or treat the infection it causes." ...

Scripps research study reveals structural dynamics of single prion molecules

...n an unusual way-to prove that the protein species under scrutiny were not oligomeric (consisting of multiple proteins in an aggregate). The technology, based on measuring fluorescence bursts from individual tagged proteins, enabled the scientists to determine that the proteins being studied were, in fact,...

Study to explore using magnets to correct 'sunken chest'

...n a lightweight plastic brace that the child wears under clothing. The attraction between the two magnets h...ce. Because the internal magnet is placed just under the skin during an outpatient visit, the child can go home on the day of the procedure with relative...

Exploring the molecular origin of blood clot flexibility

...explaining one way that clots may stretch and bend under such physical stresses as blood flow. They report ..., suggesting that clots deform in flowing blood or under other stresses, primarily by the bending of their fibers. The current research extends those earl...

Genes and biomarkers that allow doctors to choose the right therapy for the right patient

...ently approved for use in metastatic breast cancer under the name Tykerb. The study, a collaboration with GlaxoSmithKline, evaluated 7,000 genetic targets in human head and neck cancer cells to discover specific genes that might shade an individual’s response to Tykerb. "Our goal is to apply advance...

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