ScienceDaily Health Headlines
for Tuesday, January 24, 2012
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Tactile imaging sensor can assist doctors with early identification of tumors (January 24, 2012) -- A handheld tactile imaging sensor could aid doctors in early identification of cancerous lesions or tumors. ... > full story
Study pinpoints and plugs mechanism of AML cancer cell escape (January 24, 2012) -- Turning off the gene that codes for WEE1 sensitizes acute myeloid leukemia cells to chemotherapy, a new study shows. ... > full story
'Senior' runners never stop pushing their limits in marathons (January 24, 2012) -- Researchers have analyzed changes in participation and performance of runners aged 20 to 80 in the New York marathon over the last 30 years. The results are largely unexpected: the best male marathon runners over 65 and the best female marathon runners over 45 have consistently improved their performance over the last 30 years. ... > full story
Use of iodinated contrast media in imaging procedures appears to affect thyroid function (January 24, 2012) -- Exposure to iodinated contrast media during imaging procedures is associated with changes in thyroid function, and increased risk of developing hyperthyroidism, according to a new report. ... > full story
New tool enhances view of muscles (January 24, 2012) -- New research is adding to the arsenal of increasingly sophisticated medical imaging tools with a new signal-processing method for viewing muscle activation details never seen before. A novel method using ultrasound imaging, 3-D motion-capture technology and proprietary data-processing software can scan and capture 3-D maps of the muscle structure in just 90 seconds. Previous methods took 15 minutes -- far too long to ask people to hold a muscle contraction. ... > full story
Patterns of chromosome abnormality: The key to cancer? (January 23, 2012) -- Researchers have combined techniques from computer science and statistics to discover that many chromosomal pairs are lost or gained together across various cancer types, such as kidney, skeleton, and liver cancers. Tracking these changes, he says, could aid our understanding of the driving forces of cancer's progress. ... > full story
Anti-infective drug shortages pose threat to public health and patient care (January 23, 2012) -- Shortages of key drugs used to fight infections represent a public health emergency and can put patients at risk, according to a new review. Frequent anti-infective shortages can substantially alter clinical care and may lead to worse outcomes for patients, particularly as the development of new anti-infectives has slowed and the prevalence of multidrug-resistant pathogens is increasing. ... > full story
Walking and texting at the same time? Study says think again (January 23, 2012) -- Talking on a cell phone or texting while walking may seem natural and easy, but it could be dangerous and result in walking errors and interfere with memory recall. Researchers found this to be the case in a study of young people walking and using their cell phones. ... > full story
New understanding of chronic pain (January 23, 2012) -- Millions of people worldwide suffer from a type of chronic pain called neuropathic pain, which is triggered by nerve damage. Precisely how this pain persists has been a mystery, and current treatments are largely ineffective. But scientists, using a new approach known as metabolomics, have now discovered a major clue: dimethylsphingosine (DMS), a small-molecule byproduct of cellular membranes in the nervous system. In their new study, the scientists found that DMS is produced at abnormally high levels in the spinal cords of rats with neuropathic pain and appears to cause pain when injected. The findings suggest inhibiting this molecule may be a fruitful target for drug development. ... > full story
How the brain senses nutrient balance (January 23, 2012) -- Now, a research study discovers intriguing new information about how dietary nutrients influence brain cells that are key regulators of energy balance in the body. The study suggests a cellular mechanism that may allow brain cells to translate different diets into different patterns of activity. ... > full story
New process could advance use of healthy cells or stem cells to treat disease (January 23, 2012) -- In a discovery that may help speed use of "cell therapy" -- with normal cells or stem cells infused into the body to treat disease -- scientists are reporting development of a way to deliver therapeutic human cells to diseased areas within the body using a simple magnetic effect. ... > full story
How well does protective headgear works for small children participating in winter activities? (January 23, 2012) -- Researchers find surprising results regarding how much protection helmets afford children participating in winter sports activities. ... > full story
Nurturing mothers rear physically healthier adults (January 23, 2012) -- Nurturing mothers have garnered accolades for rescuing skinned knees on the playground and coaxing their children to sleep with lullabies. Now they're gaining merit for their offspring's physical health in middle age. While children raised in families with low socioeconomic status frequently go on to have high rates of chronic illness in adulthood, a sizable minority remain healthy across the life course, new research shows. ... > full story
Accelerated infant growth increases future asthma symptom risk (January 23, 2012) -- Accelerated growth in the first three months of life, but not fetal growth, is associated with an increased risk of asthma symptoms in young children, according to a new study. ... > full story
Compounds in mate tea induce death in colon cancer cells, in vitro study shows (January 23, 2012) -- In a recent study, scientists showed that human colon cancer cells die when they are exposed to the approximate number of bioactive compounds present in one cup of mate tea, which has long been consumed in South America for its medicinal properties. ... > full story
Vaccines to boost immunity where it counts, not just near shot site (January 23, 2012) -- Researchers have created synthetic nanoparticles that target lymph nodes and greatly boost vaccine responses. ... > full story
Plant flavonoid luteolin blocks cell signaling pathways in colon cancer cells (January 23, 2012) -- Luteolin is a flavonoid commonly found in fruit and vegetables. This compound has been shown in laboratory conditions to have anti-inflammatory, anti-oxidant and anti-cancer properties but results from epidemiological studies have been less certain. New research shows that luteolin is able to inhibit the activity of cell signaling pathways (IGF and PI3K) important for the growth of cancer in colon cancer cells. ... > full story
Group settings can diminish expressions of intelligence, especially among women, study finds (January 23, 2012) -- Research has found that small-group dynamics -- such as jury deliberations, collective bargaining sessions, and cocktail parties -- can alter the expression of IQ in some susceptible people. ... > full story
Researchers engineer a switch to tame aggressive cancers (January 23, 2012) -- A new imaging platform provides insight into the exact moment when cancer cells turn deadly. The new approach can modulate and monitor how the effects of a particular protein can affect the entire tumor in real-time. ... > full story
No more swabbing: Spit sampling gets a whole lot easier (January 23, 2012) -- A new tool will improve the ease of oral fluid collection. ... > full story
Synesthesia: Brain study explores what makes colors and numbers collide (January 23, 2012) -- Someone with the condition known as grapheme-color synesthesia might experience the number 2 in turquoise or the letter S in magenta. Now, researchers have shown that those individuals also show heightened activity in a brain region responsible for vision. ... > full story
Genetic mechanism linked to congenital heart disease identified (January 23, 2012) -- Scientists have identified a finely tuned mechanism by which fetal heart muscle develops into a healthy and fully formed beating heart -- offering new insight into the genetic causes of congenital heart disease and opening the door to one day developing therapies to fight this chronic and potentially fatal disorder. ... > full story
Novel iron source: Newly identified iron absorption mechanism suggests that legumes could provide key to treating iron deficiency worldwide (January 23, 2012) -- A groundbreaking study reveals the existence of at least two independent mechanisms for iron absorption from non-meat sources -- and a potential treatment for iron deficiency, the most common nutrient deficiency worldwide. The discovery of an alternative mechanism for iron absorption from vegetables and legumes may provide the key to helping solve iron deficiency by providing an alternative, affordable, and readily available source of iron. ... > full story
Embryonic signal drives pancreatic cancer and offers a way to kill it (January 23, 2012) -- Pancreatic cancer is a particularly challenging one to beat; it has a tendency to spread and harbors cancer stem cells that stubbornly resist conventional approaches to therapy. Now, researchers have evidence to suggest there is a way to kill off those cancer stem cells. The target is a self-renewal pathway known for its role not in cancer but in embryonic stem cells. ... > full story
First detailed data of risk of using Rasilez with certain blood pressure-lowering drugs (January 23, 2012) -- Researchers have published the first detailed figures showing the risk of using the prescription drug Rasilez in combination with certain other blood pressure-lowering medications. ... > full story
Study explores men's ability to manage fear in ways that allow them to exhibit confidence (January 23, 2012) -- A study of mixed martial arts competitors found that these men have unique ways of managing fear that actually allow them to exhibit confidence. ... > full story
Study examines research on overuse of health care services (January 23, 2012) -- The overuse of health care services in the United States appears to be an understudied problem with research literature limited to a few services and rates of overuse varying widely, according to a new article. ... > full story
Positive affirmation appears to improve medication adherence in hypertensive African-Americans (January 23, 2012) -- Positive affirmation along with patient education appears to help African-American patients with high blood pressure more effectively follow their medication regimen, according to a new study. ... > full story
Adult stem cells could improve angioplasy outcome; Study to explore usage (January 23, 2012) -- A researcher is studying what role adult stem cells might play in repairing damaged coronary arteries, following angioplasty/stenting. ... > full story
Sweeping genetic analysis of rare disease yields common mechanism of hypertension (January 22, 2012) -- Analyzing all the genes of dozens of people suffering from a rare form of hypertension, researchers have discovered a new mechanism that regulates the blood pressure of all humans. ... > full story
Researchers solve questions about Ethiopians' high-altitude adaptations (January 22, 2012) -- Over many generations, people living in the high-altitude regions of the Andes or on the Tibetan Plateau have adapted to life in low-oxygen conditions, but exactly how their genes convey a survival advantage remains an open question. Now, scientists have made new inroads to answering this question with the first genome-wide study of high-altitude adaptations within the third major population to possess them: the Amhara people of the Ethiopian Highlands. ... > full story
Elusive Z-DNA found on nucleosomes (January 22, 2012) -- New research shows that left-handed Z-DNA, normally only found at sites where DNA is being copied, can also form on nucleosomes. ... > full story
Are religious people better adjusted psychologically? (January 22, 2012) -- Psychological research has found that religious people feel great about themselves, with a tendency toward higher social self-esteem and better psychological adjustment than non-believers. But a new study finds that this is only true in countries that put a high value on religion. ... > full story
Chemical in personal care products (phthalates) may contribute to child obesity (January 22, 2012) -- Researchers have found an association between exposure to the chemical group known as phthalates and obesity in young children – including increased body mass index (BMI) and waist circumference. ... > full story
Fundamental malaria discovery: How parasites target proteins to surface of red blood cells (January 22, 2012) -- Researchers have made a fundamental discovery in understanding how malaria parasites cause deadly disease. The researchers show how parasites target proteins to the surface of the red blood cell that enables sticking to and blocking blood vessels. Strategies that prevent this host-targeting process will block disease. ... > full story
Why do smells make some people sick? (January 22, 2012) -- Do you get a headache from the perfume of the lady next to you at the table? Do cleaning solutions at work make your nose itch? If you have symptoms prompted by everyday smells, it does not necessarily mean you are allergic but rather that you suffer from chemical intolerance. This hypersensitivity can be the result of an inability to get used to smells. ... > full story
Advance toward an imaging agent for diagnosing Alzheimer's disease (January 21, 2012) -- Scientists are reporting development and initial laboratory tests of an imaging agent that shows promise for detecting the tell-tale signs of Alzheimer's disease in the brain -- signs that now can't confirm a diagnosis until after patients have died. ... > full story
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