ScienceDaily Top Science Headlines
for Thursday, December 23, 2010
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Most common adult brain cancer linked to gene deletion, doctors say (December 23, 2010) -- A new study has identified an important gene deletion in up to one of every four cases of glioblastoma, the most common adult brain cancer. This deletion contributes to tumor development, promotes resistance to therapy and considerably worsens a patient's survival prospects. ... > full story
Photons vs. protons for treatment of spinal cord gliomas (December 23, 2010) -- A study comparing the long-term outcomes of patients with spinal-cord tumors following radiation therapy suggests that certain subsets of patients have better long-term survival, and that photon-based radiation therapy may result in better survival than proton-beam therapy, even in patients with more favorable characteristics. ... > full story
New annotated database sifts through mountains of sequencing data to find gene promoters (December 23, 2010) -- Researchers announce the release of an online tool that will help scientists find "gene promoters" -- regions along a DNA strand that tell a cell's transcription machinery where to start reading in order to create a particular protein. The Mammalian Promoter Database (MPromDb) integrates sequencing data generated at Wistar with publicly available data on human and mouse genomics. MPromDb pinpoints known promoters and predicts where new ones are likely to be found. ... > full story
Why do risks with human characteristics make powerful consumers feel lucky? (December 23, 2010) -- People who feel powerful are more likely to believe they can beat cancer if it's described in human terms, according to new study. ... > full story
Genome-wide hunt reveals links to abnormal rhythms behind sudden death, heart damage (December 22, 2010) -- A study among almost 50,000 people worldwide has identified DNA sequence variations linked with the heart's electrical rhythm in several surprising regions among 22 locations across the human genome. ... > full story
Immunity in emerging species of a major mosquito carrer of malaria (December 22, 2010) -- A new study suggests that the mosquitoes' immune response to malaria parasites, mediated by a gene called TEP1, is one of the traits that differ between two evolving species of Anopheles gambiae. ... > full story
Climbing Mount Everest: Noble adventure or selfish pursuit? (December 22, 2010) -- Adventure seekers are plunking down more than ,000 to climb Mount Everest, but a new study finds that people who pay for transformative experiences often lack the communitarian spirit that usually defines such activities. ... > full story
Blue-green algae tested for treating amyotrophic lateral sclerosis (December 22, 2010) -- Spirulina, a nutrient-rich, blue-green algae, an ancient food source used by the Aztecs, may have a dual antioxidant and anti-inflammatory effect on motor neurons. Spirulina appeared to provide neuroprotective support for dying motor neurons in a mouse model of amyotrophic lateral sclerosis. ... > full story
Tumor cells in blood may signal worse prognosis in head and neck cancer patients (December 22, 2010) -- A new study suggests that the presence of tumor cells in the circulating blood of patients with squamous cell cancer of the head and neck might predict disease recurrence and reduced survival. An increased number of circulating tumor cells (CTCs) also correlates with a worse outcome. The findings of the ongoing, prospective study suggest that CTCs might be a prognostic marker to help further individualize therapy. Currently, no prognostic blood test exists for this malignancy. ... > full story
New ideas enhance efficiency of wind turbines (December 22, 2010) -- One issue confronting the efficiency of wind as a promising renewable energy source is the wind itself -- specifically, its changeability. While the aerodynamic performance of a wind turbine is best under steady wind flow, the efficiency of the blades degrades when exposed to conditions such as wind gusts, turbulent flow, upstream turbine wakes and wind shear. Now, a new type of air-flow technology may soon increase the efficiency of large wind turbines under many different wind conditions. ... > full story
Eating healthier means living longer (December 22, 2010) -- The leading causes of death have shifted from infectious diseases to chronic diseases such as cardiovascular disease and cancer. In a new study, researchers investigated empirical data regarding the associations of dietary patterns with mortality through analysis of the eating patterns of over 2500 adults between the ages of 70 and 79 over a ten-year period. They found that diets favoring certain foods were associated with reduced mortality. ... > full story
Smoking may worsen pain for cancer patients (December 22, 2010) -- The relationship between smoking and cancer is well established. In a new study, researchers report evidence to suggest that cancer patients who continue to smoke despite their diagnosis experience greater pain than nonsmokers. They found that for a wide range of cancer types and for cancers in stages I to IV, smoking was associated with increased pain severity and the extent to which pain interfered with a patient's daily routine. ... > full story
Gene alteration identified that predisposes to syndrome with high risk of cancer (December 22, 2010) -- Researchers have identified a new genetic alteration that predisposes individuals to Cowden syndrome, a rare disorder that is characterized by high risks of breast, thyroid and other cancers, according to preliminary research. ... > full story
Toxin-laden nectar poses problems for honeybees (December 22, 2010) -- Researchers in the UK have shown for the first time that chemical seratonin enables the honeybee to learn to avoid nectar containing toxins. ... > full story
Stress can enhance ordinary, unrelated memories (December 22, 2010) -- Stress can enhance ordinary, unrelated memories, a team of neuroscientists has found in a study of laboratory rats. Their results may bolster our understanding of post-traumatic stress disorder (PTSD) and could offer a pathway for addressing PTSD and related afflictions. ... > full story
Obesity increases risk of death in severe vehicle crashes, study shows (December 22, 2010) -- Moderately and morbidly obese persons face many health issues -- heart disease, diabetes, hypertension, stroke, gallbladder disease and others. Now, increased chances of dying while driving during a severe auto accident can be added to the list. ... > full story
Biomarkers could predict death in AIDS patients with severe inflammation (December 22, 2010) -- A new study suggests that AIDS patients with cryptococcal meningitis who start HIV therapy are predisposed to immune reconstitution inflammatory syndrome -- an exaggerated inflammatory immune response that kills up to one-third of affected people -- if they have biomarkers (biochemicals) in their blood showing evidence of a damaged immune system that is not capable of clearing the fungal infection. ... > full story
Long-lasting chemicals threaten the environment and human health (December 22, 2010) -- New research suggests that a number of high production volume chemicals are likely to become sequestered in post-treatment sludge and enter the environment when these biosolids are deposited on land. ... > full story
Natural supplement, echinacea, may reduce common-cold duration by only half a day (December 22, 2010) -- An over-the-counter herbal treatment believed to have medicinal benefits has minimal impact in relieving the common cold, according to new research. ... > full story
New breathing therapy reduces panic and anxiety by reversing hyperventilation (December 22, 2010) -- A new treatment that helps people with panic disorder to normalize their breathing works better to reduce panic symptoms and hyperventilation than traditional cognitive therapy, according to a new study. The new 'CART' treatment was found to be better than traditional cognitive therapy at altering hyperventilation and panic symptoms. ... > full story
Membership in many groups leads to quick recovery from physical challenges (December 22, 2010) -- Being a part of many different social groups can improve mental health and help a person cope with stressful events. It also leads to better physical health, making you more able to withstand -- and recover faster from -- physical challenges, according to a new study. ... > full story
Genetic trait could triple odds of whites' susceptibility to heavy cocaine abuse (December 22, 2010) -- Nearly one in five whites could carry a genetic variant that substantially increases their odds of being susceptible to severe cocaine abuse, according to new research. This genetic variant, characterized by one or both of two tiny gene mutations, alters the brain's response to specific chemical signals. In the study, the variant was associated with a more than threefold increase in the odds that carriers will be susceptible to severe cocaine abuse leading to fatal overdosing, compared to non-carriers. ... > full story
Spread of tuberculosis in prisons increases the incidence of TB in the general population (December 22, 2010) -- The risk of tuberculosis (TB) and latent TB (in which the bacteria that cause TB lie dormant but can reactivate later to cause active TB disease) is higher in the prison population than in the general population, according to new research. ... > full story
Smarter systems help busy doctors remember (December 22, 2010) -- Busy doctors can miss important details about a patient's care during an office exam. To prevent that, researchers have created a whip smart-assistant for physicians -- a new system using electronic health records that alerts doctors during an exam when a patient's care is amiss. A yellow light on their computer alerts them to problems. The new system, tied to doctor performance reviews, improved patient care and boosted preventive screenings. ... > full story
Use the right metaphor to get patients to enroll in clinical trials (December 22, 2010) -- The language that doctors use with low-income, rural patients can help determine whether these patients agree to participate in clinical trials testing new cancer treatments, a new study found. Researchers found that the metaphors doctors used to help explain what happens in such trials played a big role in whether patients would agree to participate. ... > full story
Cellular mechanism responsible for chronic inflammation, type 2 diabetes uncovered (December 21, 2010) -- Researchers have demonstrated that certain T cells require input from monocytes in order to maintain their pro-inflammatory response in people with type 2 diabetes (T2D). The study also showed, for the first time, how a loss in homeostasis in this group of T cells most likely promotes chronic inflammation associated with T2D. ... > full story
Fruit fly study digs deeper into poorly understood details of forming embryos (December 21, 2010) -- Using fruit flies as a model to study embryo formation, scientists report that molecular breakdown of a protein called Bicoid is vital to normal head-to-tail patterning of the insect's offspring. The study shows how Bicoid is targeted for molecular degradation by a newly identified protein the researchers named Fates-shifted (Fsd). Without the interaction between Bicoid and Fsd, fruit fly embryos are improperly formed. ... > full story
Beautiful people convey personality traits better during first impressions (December 21, 2010) -- A new study has found that people identify the personality traits of people who are physically attractive more accurately than others during short encounters. ... > full story
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