ScienceDaily Health Headlines
for Thursday, August 4, 2011
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Newly developed molecule tested as a delivery vehicle to image and kill brain tumors (August 4, 2011) -- A single compound with dual function -- the ability to deliver a diagnostic and therapeutic agent -- may one day be used to enhance the diagnosis, imaging and treatment of brain tumors, according to new research. ... > full story
Combo therapies tested to overcome drug resistance in melanoma patients (August 4, 2011) -- Scientists tested a combination of small molecules that may, when used with the BRAF inhibitors, help overcome this drug resistance and extend the lives of those with advanced melanoma. ... > full story
Widespread mistaken beliefs about memory, U.S. national survey reveals (August 4, 2011) -- A new survey reveals that many people in the US -- in some cases a substantial majority -- think that memory is more powerful, objective and reliable than it actually is. Their ideas are at odds with decades of scientific research. ... > full story
New discovery brings customized tuberculosis therapies based on genotype closer to reality (August 4, 2011) -- Are you genetically predisposed to tuberculosis? Scientists may now be able to answer this question and doctors may be able to adjust their therapeutic approach based on what they learn. That's because new research suggests that two frequent mutations in an immune system gene called TLR1 are responsible cellular changes that ultimately make us less likely to resist the disease. ... > full story
How nerve cells are kept up to speed (August 4, 2011) -- Scientists have unraveled a mechanism involved in the reformation of neurotransmitter containing membrane vesicles in the brain. Perturbations of this reformation process, because of mutations in key proteins such as CALM and AP180, are a possible cause for the development of neurodegenerative disorders such as Alzheimer's disease. ... > full story
Success in treatment for kidney transplant patients (August 3, 2011) -- There is now a new alternative to immunosuppressive treatment after kidney transplants which comes without the usual severe side effects. ... > full story
One species of pathogen can produce two distinct biofilms (August 3, 2011) -- Many medical devices, ranging from artificial hip joints to dentures and catheters, can come with unwelcome guests -- complex communities of microbial pathogens called biofilms that are resistant to the human immune system and antibiotics, thus proving a serious threat to human health. However, researchers may have a new way of looking at biofilms, thanks to a new study. ... > full story
Getting to the heart of the appeal of video games (August 3, 2011) -- People spend 3 billion hours a week playing video games but little is known scientifically about why they are actually fun in the first place. ... > full story
Natural killer cells participate in immune response against HIV (August 3, 2011) -- A new study shows for the first time that natural killer cells, which are part of the body's first-line defense against infection, can contribute to the immune response against HIV. ... > full story
Why knee osteoarthritis afflicts more women than men (August 3, 2011) -- An orthopedic surgeon suspects that the nagging pain and inflammation that women can experience in their knees may be different from what men encounter, and she has been chosen to lead a novel US-Canadian study to explore the question. ... > full story
Virginia Tech shootings: Professors publish research on post-traumatic stress (August 3, 2011) -- Prevalence of post-traumatic stress was significantly higher among women after the 2007 shootings at Virginia Tech, according to researchers. ... > full story
Revolutionary biodegradable pellet targets glue ear infection (August 3, 2011) -- A revolutionary biodegradable pellet which slowly releases antibiotics into the middle ear could transform the lives of thousands of children who suffer from glue ear. ... > full story
Cooked green vegetables, dried fruit, legumes, and brown rice associated with fewer colon polyps (August 3, 2011) -- Eating legumes at least three times a week and brown rice at least once a week was linked to a reduced risk of colon polyps by 33 percent and 40 percent respectively, according to new research. High consumption of cooked green vegetables and dried fruit was also associated with greater protection, the study shows. ... > full story
Stray-bullet shootings most often harm women and individuals at low-risk for violence, study finds (August 3, 2011) -- In the first U.S. nationwide study of stray-bullet shootings, researchers have quantified mortality and injury among victims of these unexpected events. ... > full story
Basis for battery-powered skin patch for wider range of protein-based medicines (August 3, 2011) -- Scientists have confirmed the feasibility of using a new drug delivery system -- the basis for a battery-powered skin patch -- to administer medication that shows promise for treating peripheral artery disease and healing stubborn skin ulcers and burns. The needle-free delivery of the medication, which cannot be given by mouth, can have side effects when injected. ... > full story
Quick, low-cost tests can accurately identify childhood developmental delays, study shows (August 3, 2011) -- Researchers have found that two existing screening tests are accurate in diagnosing development delays in children and could be incorporated in a busy family practice setting with relative ease. Parents can complete the questionnaire at home or in the family physician's office, with the physician scoring the tests and providing results in a matter of minutes. ... > full story
Scientists identify what makes us feel 'bad' when we're sick, how to treat it (August 3, 2011) -- A new class of drugs developed to treat sleep disorders can reverse the inactivity and exhaustion brought on by acute illness. Researchers have found that the neurotransmitter system thought to be primarily involved in the induction of sleep is actually extremely important in maintaining motivation and movement during acute and chronic illness. ... > full story
New link found between obesity and insulin resistance (August 3, 2011) -- Scientists have uncovered a new way in which obesity wreaks its havoc, by altering the production of proteins that affect how other proteins are spliced together. Their finding may point toward novel targets for diabetes drugs. ... > full story
New antidepressants can increase risks for elderly, study suggests (August 3, 2011) -- Older people taking new generation antidepressants are at more risk of dying or suffering from a range of serious health conditions including stroke, falls, fractures and epilepsy, a new study suggests. ... > full story
Researchers develop webcam tool to improve office worker posture (August 3, 2011) -- Scientists have developed a new training method using a desktop webcam to improve ergonomic posture and reduce the risk of musculoskeletal disorders (MSD) among office workers using computers. The results showed that both training methods provided effective short-term posture improvement; however, sustained improvement was only attained with the photo-training method. ... > full story
Study explains why muscles weaken with age and points to possible therapy (August 3, 2011) -- Researchers have discovered the biological mechanism behind age-related loss of muscle strength and identified a drug that may help reverse this process. ... > full story
Adverse childhood could raise adult heart disease risk (August 3, 2011) -- The risk of coronary heart disease in middle age is moderately higher for men and women who grew up in adverse family settings, according to a new analysis of medical records and surveys of more than 3,500 people. ... > full story
Research into eating disorders and fertility reveals mixed picture (August 3, 2011) -- Eating disorders such as anorexia and bulimia are associated with fertility problems and negative attitudes to pregnancy, according to a new study. The research also revealed high rates of unplanned pregnancies in women with a history of anorexia, suggesting they may be underestimating their chances of conceiving. ... > full story
Why diets don't work: Starved brain cells eat themselves, study finds (August 3, 2011) -- A new report might help to explain why it's so frustratingly difficult to stick to a diet. When we don't eat, hunger-inducing neurons in the brain start eating bits of themselves. That act of self-cannibalism turns up a hunger signal to prompt eating. ... > full story
Even with regular exercise, people with inactive lifestyles more at risk for chronic diseases (August 3, 2011) -- According to the Centers for Disease Control and Prevention, 25 percent of Americans have inactive lifestyles (they take fewer than 5,000 steps a day) and 75 percent do not meet the weekly exercise recommendations (150 minutes of moderate activity each week and muscle-strengthening activity twice a week) to maintain good health. After reviewing recent literature, researchers contend that physical inactivity is the primary cause of chronic diseases such as diabetes, obesity and fatty liver disease. ... > full story
Persons displaced by war at increased risk of posttraumatic stress disorder, depression, anxiety (August 3, 2011) -- Residents of Sri Lanka who were internally displaced during the civil conflict that occurred in their country from 1983 to 2009 have a higher prevalence of war-related mental health conditions that include depression, anxiety and posttraumatic stress disorder, according to a new study. ... > full story
How do you stop tasting? Protein inside taste cells turn off bitter taste (August 3, 2011) -- New findings may lend insight into why some people are especially sensitive to bitter tastes. Researchers have identified a protein inside of taste cells that acts to shorten bitter taste signals. Mice lacking the gene for this taste terminator protein are more sensitive to bitter taste and also find it more aversive. ... > full story
Aging: T cells that survive the longest may better protect against infections such as the flu (August 3, 2011) -- Aging brings about a selective decline in the numbers and function of T cells -- a type of white blood cell involved in the immune system's response to infection -- and T cells that survive the longest may better protect against infections such as the flu, according to a new study. The finding may lead to targeting these cells with vaccinations that increase their number and improve protection against disease in older adults. ... > full story
Academics 'guest authoring' ghostwritten medical journal articles should be charged with fraud, legal experts argue (August 3, 2011) -- Two law professors argue that academics who "lend" their names, and receive substantial credit, as guest authors of medical and scientific articles ghostwritten by industry writers, should be charged with professional and academic misconduct and fraud, even if they contain factually correct information. ... > full story
25 percent of Ontarians hospitalized for depression required ER visit or readmission within 30 days (August 3, 2011) -- Twenty-five percent of people who were hospitalized for depression were readmitted or visited an emergency room again for depression within 30 days of discharge, according to a new study. ... > full story
Long periods of estrogen deprivation jeopardizes brain receptors, stroke protection (August 2, 2011) -- Prolonged estrogen deprivation in aging rats dramatically reduces the number of brain receptors for the hormone as well as its ability to prevent strokes, researchers report. However the damage is forestalled if estrogen replacement begins shortly after hormone levels drop, according to a new study. ... > full story
Mice point to a therapy for Charcot-Marie-Tooth disease (August 2, 2011) -- Researchers have developed a mouse model for Charcot-Marie-Tooth (CMT) neuropathy, a hereditary disease of the peripheral nervous system. They also found a potential therapy for this incurable disease. The treatment not only halted the damage to the nerves and the atrophy of the muscles, it even succeeded in reversing the symptoms. ... > full story
Satisfaction in body function, body appearance differs in older men and women (August 2, 2011) -- When it comes to satisfaction with body function and body appearance, older men and women have different opinions, although physical activity does improve satisfaction in both sexes, according to new study. ... > full story
Regrowing blood vessels with a potent molecule (August 2, 2011) -- Medical researchers have developed a minimally invasive method of delivering growth factor to regrow blood vessels. This research could be used to treat heart disease, the most common cause of death in the Western world. ... > full story
Researchers help find natural products potential of frankia bacteria (August 2, 2011) -- Soil-dwelling bacteria of the genus Frankia have the potential to produce a multitude of natural products, including antibiotics, herbicides, pigments, anticancer agents, and other useful products, according to a new article. ... > full story
Brain chemical may explain why heavy smokers feel sad after quitting (August 2, 2011) -- Heavy smokers may experience sadness after quitting because early withdrawal leads to an increase in the mood-related brain protein monoamine oxidase A (MAO-A), a new study has shown. This finding may also explain why heavy smokers are at high risk for clinical depression. ... > full story
New study identifies emergence of multidrug-resistant strain of salmonella (August 2, 2011) -- A new study has identified the recent emergence of a multidrug-resistant strain of Salmonella that has a high level resistance to ciprofloxacin, a common treatment for severe Salmonella infections. ... > full story
Inexpensive method detects ALK rearrangement in lung cancer patients (August 2, 2011) -- A relatively simple and inexpensive method may be used to determine whether a lung cancer patient is a candidate for crizotinib therapy, according to new research. ... > full story
COPD patients with sense of humor feel better, but laughter may be bad for lungs (August 2, 2011) -- Having a sense of humor is associated with improved emotional functioning and an enhanced quality of life among patients with a chronic lung illness, but the actual act of laughing out loud can reduce lung function, at least in the short term, research suggests. The study evaluated humor and laughter in patients with chronic obstructive pulmonary disease, or COPD. ... > full story
'Swamp gas' protects blood vessels from complications of diabetes (August 2, 2011) -- Hydrogen sulfide is a foul-smelling gas with an odor resembling that of rotten eggs. Sometimes called "swamp gas," this toxic substance is generally associated with decaying vegetation, sewers and noxious industrial emissions. And -- as odd as it may seem -- it also plays a critical role in protecting blood vessels from the complications of diabetes. ... > full story
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