Noticias del día

The same molecular mechanism that increases life span through calorie restriction may help boost memory and brainpower, researchers at MIT's Picower Institute for Learning and Memory report in the July 11 issue of Nature.

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A major breakthrough in remote wave sensing by a team of Rensselaer Polytechnic Institute researchers opens the way for detecting hidden explosives, chemical, biological agents and illegal drugs from a distance of 20 meters.

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Farmed fish are an increasingly important food source, with a global harvest now at 110 million tons and growing at more than 8 percent a year. But epidemics of infectious disease threaten this vital industry, including one of its most popular products: farmed Atlantic salmon. Perhaps even more worrisome: these infections can spread to wild fish coming in close proximity to marine pens and fish escaping from them.

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Implementing a program of universal HIV testing and immediate antiretroviral treatment (ART) for infected individuals could have a major impact on the HIV/AIDS epidemic in Washington, DC, but a new study finds that it would not halt the epidemic, something that a previous report had projected. In a paper that will appear in the August 15 issue of Clinical Infectious Diseases and has been released online, researchers find that the so-called "test-and-treat" strategy could reduce new HIV infections by 15 percent over the next five years while conferring large survival benefits to HIV-infected patients.

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Multimedia talking touchscreens, housed in computer kiosks at clinics and hospitals, are helping researchers at Northwestern University Feinberg School of Medicine and clinicians at local health care centers enhance patient-centered care for patients with diverse language, literacy and computer skills.

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Abnormal brain images combined with examination of the composition of the fluid that surrounds the spine may offer the earliest signs identifying healthy older adults at risk of developing Alzheimer's disease, well before cognitive problems emerge, a study by researchers at UC Davis has found.

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The journal, Nano Letters, recently published an article highlighting the fascinating nanogenerators developed by Dr. Yong Shi, a professor in the Mechanical Engineering Department at Stevens Institute of Technology. The paper was entitled, "1.6 V Nanogenerator for Mechanical Energy Harvesting Using PZT Nanofibers."

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A sophisticated new analysis of team tactics predicts a Spanish win in Sunday's FIFA World Cup final and also shows why England were beaten by Germany.

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Researchers at Brown University have found that the length of an average Medicare-certified hospice stay in a nursing home has doubled during the last 10 years.

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Chang Lu and his chemical engineering research group at Virginia Tech have discovered how to "greatly enhance" the delivery of DNA payloads into cells. The description of their work will be featured on the cover of Lab on a Chip (issue 16), the premier journal for researchers in microfluidics. http://www.rsc.org/Publishing/Journals/LC/article.asp?doi=c004472e

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Defeating the flu is challenging because the virus responsible for the disease undergoes frequent changes of its genetic code, making it difficult for scientists to manufacture effective vaccines for the seasonal flu in a timely manner. Now, a University of Miami (UM) computer scientist, Dimitris Papamichail, and a team of researchers from Stony Brook University have developed a rapid and effective approach to produce vaccines for new strains of influenza viruses. The researchers hope to develop the new technology and provide an efficient method to confront the threat of seasonal epidemics.

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Researchers at the University of Warwick and the University of Sheffield have applied computing power to crack a problem in egg shell formation. The work may also give a partial answer to the age old question "what came first the chicken or the egg?"

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The application of nanotechnology in the field of drug delivery has attracted much attention in recent years. In cancer research, nanotechnology holds great promise for the development of targeted, localized delivery of anticancer drugs, in which only cancer cells are affected.

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Researchers have discovered a monoclonal antibody that is effective against "Avian" H5N1, seasonal H1N1 and the 2009 "Swine" H1N1 influenza. Scientists at Sea Lane Biotechnologies, LLC, in collaboration with Mt. Sinai School of Medicine, St. Jude Research Hospital and the Scripps Research Institute, have shown that this antibody potently prevents and treats the Swine H1N1 influenza in mouse models of the disease. Results are published July 8 in the open-access journal PLoS Pathogens.

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Legalizing the production and distribution of marijuana in California could cut the price of the drug by as much as 80 percent and increase consumption, according to a new study by the nonprofit RAND Corporation that examines many issues raised by proposals to legalize marijuana in the state.

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Dr. David ChiribogaEl Dr. David Chiriboga se graduó de médico en la Universidad Central del Ecuador. Cursó su Maestría...

“Medicine 2.0” applications, services, and tools are defined as Web-based services for health care consumers, caregivers, patients, health professionals, and biomedical researchers, that use Web 2.0 technologies and/or semantic web and virtual reality approaches to enable and facilitate specifically 1) social networking, 2) participation, 3) apomediation, 4) openness, and 5) collaboration, within and between these user groups.

We have developed a pattern-matching de-identification system based on dictionary look-ups, regular expressions, and heuristics. Evaluation based on two different sets of nursing notes collected from a U.S. hospital suggests that, in terms of recall, the software out-performs a single human de-identifier (0.81) and performs at least as well as a consensus of two human de-identifiers (0.94). The system is currently tuned to de-identify PHI in nursing notes and discharge summaries but is sufficiently generalized and can be customized to handle text files of any format. Although the accuracy of the algorithm is high, it is probably insufficient to be used to publicly disseminate medical data. The open-source de-identification software and the gold standard re-identified corpus of medical records have therefore been made available to researchers via the PhysioNet website to encourage improvements in the algorithm.

Second Life is a virtual world of avatars, sims and Linden dollars, and CIGNA, Corp., Partners HealthCare System, Inc. and the Centers for Disease Control and Prevention (CDC) are among the first health organizations to establish beachheads on its shores. But it's not, they say, because Second Life and other social networking media (e.g., Web sites) are new and flashy. Rather, their ventures are a response to changes in the way consumers are communicating and accessing health information.

The National Institutes of Health quietly blocked public access to databases of patient DNA profiles after learning of a study that found the genetic information may not be as anonymous as previously believed. The study that sparked the move, published in today's edition of the journal Public Library of Science, revealed the ability of a new type of forensic DNA analysis to identify a person's DNA even if it were found in minute quantities and mixed with that of hundreds of other people.