(Boston) - In a Special Report in the current issue of Circulation, Boston Medical Center cardiothoracic surgeon Harold Lazar, MD, has found that off-pump coronary artery bypass graft (OPCAB) surgery has failed to show any significant improvement in short-term morbidity or mortality as compared to the traditional on-pump coronary artery bypass graft (CABG) surgery. He recommends that the technique be abandoned, unless surgeons who perform off-pump surgery can show that their own results are as good as results reported with the traditional on-pump surgery.
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CHAMPAIGN, Ill. — A 2,000-square-kilometer zone in the Yukon Flats of interior Alaska – one of the most flammable high-latitude regions of the world, according to scientists – has seen a dramatic increase in both the frequency and severity of fires in recent decades. Wildfire activity in this area is higher than at any other time in the past 10,000 years, the researchers report.
Remove even one bumblebee species from an ecosystem and the impact is swift and clear: Their floral "sweethearts" produce significantly fewer seeds, a new study finds.
The study, to be published by the Proceedings of the National Academy of Sciences, focused on the interactions between bumblebees and larkspur wildflowers in Colorado's Rocky Mountains. The results show how reduced competition among pollinators disrupts floral fidelity, or specialization, among the remaining bees in the system, leading to less successful plant reproduction.
A team of University of California, San Diego researchers has designed new compounds that mimic those naturally used by the body to regulate blood pressure. The most promising of them may literally be the key to controlling hypertension, switching off the signaling pathways that lead to the deadly condition.
A recent study published in the July issue of the Journal of Immunology helps explain why some humans contract bacterial super-infections like pneumonia with influenza. The research was led by Le Bonheur Pediatrician-in-Chief Jon McCullers, MD – an infectious disease specialist who is also chair of the Department of Pediatrics for the University of Tennessee Health Science Center and adjunct faculty at St. Jude Children's Research Hospital.
We know that breastfeeding has a positive impact on child development and health —including protection against illness. Now researchers from Tel Aviv University have shown that breastfeeding could also help protect against Attention Deficit/Hyperactivity Disorder (ADHD), the most commonly diagnosed neurobehavioral disorder in children and adolescents.
Hamilton, ON (July 22, 2013) – Financial incentives for Ontario surgeons are likely a key factor driving greater use of laparoscopic colon cancer surgery, says a study led by a McMaster University surgeon.
The research, published online by the Annals of Surgical Oncology, found that between 2002 and 2009 there was an increase in laparoscopic versus traditional open techniques for colon and rectal cancer surgery. These increases were associated with only minimal decreases in how long patients stayed in hospital after surgery and no changes in the survival of patients.
The Yarlung-Tsangpo River in southern Asia drops rapidly through the Himalaya Mountains on its way to the Bay of Bengal, losing about 7,000 feet of elevation through the precipitously steep Tsangpo Gorge.
For the first time, scientists have direct geochemical evidence that the 150-mile long gorge, possibly the world's deepest, was the conduit by which megafloods from glacial lakes, perhaps half the volume of Lake Erie, drained suddenly and catastrophically through the Himalayas when their ice dams failed at times during the last 2 million years.
EUGENE, Ore. -- (July 22, 2013) -- Conventional scientific wisdom has it that plants and other creatures have only lived on land for about 500 million years, and that landscapes of the early Earth were as barren as Mars.
A new study, led by geologist Gregory J. Retallack of the University of Oregon, now has presented evidence for life on land that is four times as old -- at 2.2 billion years ago and almost half way back to the inception of the planet.
Is binge eating a tell-tale sign of suicidal thoughts? According to a new study of African American girls, by Dr. Rashelle Musci and colleagues from the Bloomberg School of Public Health, Johns Hopkins University in the US, those who experience depressive and anxious symptoms are often dissatisfied with their bodies and more likely to display binge eating behaviors. These behaviors put them at higher risk for turning their emotions inward, in other words, displaying internalizing symptoms such as suicide. The study is published online in Springer's journal, Prevention Science.
Carnegie Mellon, Microsoft researchers demonstrate internal tagging technique for 3D-printed objects
PITTSBURGH—The age of 3D printing, when every object so created can be personalized, will increase the need for tags to keep track of everything. Happily, the same 3D printing process used to produce an object can simultaneously generate an internal, invisible tag, say scientists at Carnegie Mellon University and Microsoft Research.
NEW YORK - Wear your lucky Yankees jersey. Hold your breath. Expect nothing less than a World Series win. Certain routines are routine for millions of baseball playoff fans desperate to meet victory. In fact, a new study in the Journal of Consumer Research says fans are so deep in their traditions, they will drop brand loyalty-if it means a win.
Putnam Valley, NY. -- The use of central nervous system fetal tissues derived from routine elective abortions to provide stem cells for transplantation procedures aimed at restoring damage done by neurodegenerative diseases is an established therapy. However, fetal tissue microbial contaminants have been known to cause brain infections in cell transplantation recipients. Now, a research team from Germany has developed a "washing" technique that decontaminates the fetal tissues from which stem cells are derived.
Rochester, MN -- While there is an expectation that newer medical practices improve the standard of care, the history of medicine reveals many instances in which this has not been the case. Reversal of established medical practice occurs when new studies contradict current practice. Reporters may remember hormone replacement therapy as an example of medical reversal. A new analysis published in Mayo Clinic Proceedings documents 146 contemporary medical practices that have subsequently been reversed.
WOODS HOLE, Mass.—How a group of animals can abandon sex, yet produce more than 460 species over evolutionary time, became a little less mysterious this week with the publication of the complete genome of a bdelloid rotifer (Adineta vaga) in the journal Nature.