ScienceDaily Health Headlines
for Tuesday, February 7, 2012
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Discovery predicts patient sensitivity to important drug target in deadly brain cancer (February 6, 2012) -- A recent discovery enables the prediction of patient sensitivity to proposed drug therapies for glioblastoma – the most common and most aggressive malignant brain tumor in humans. ... > full story
PET techniques provide more accurate diagnosis, prognosis in challenging breast cancer cases (February 6, 2012) -- Researchers are revealing how molecular imaging can be used to solve mysteries about difficult cases of breast cancer. One recent article focuses on an imaging agent that targets estrogen receptors in estrogen receptor–positive breast cancer patients with formerly inconclusive assessments, and the second highlights a different imaging agent's ability to help predict the prognosis for patients undergoing chemotherapy for a very aggressive type of breast cancer. ... > full story
Why people can hold visual information in great detail in their working memory (February 6, 2012) -- A new study may explain why people can hold visual information in great detail in their working memory. ... > full story
Key finding in stem cell self-renewal (February 6, 2012) -- Scientists have proposed a mechanism for the control of whether embryonic stem cells continue to proliferate and stay stem cells, or differentiate into adult cells like brain, liver or skin. The work has implications in two areas. In cancer treatment, it is desirable to inhibit cell proliferation. ... > full story
Low levels of lipid antibodies increase complications following heart attack (February 6, 2012) -- Coronary patients with low levels of an immune system antibody called anti-PC, which neutralizes parts of the "bad" cholesterol, run a greater risk of suffering complications following an acute cardiac episode and thus of premature death. ... > full story
Strategy shift with age can lead to navigational difficulties (February 6, 2012) -- A researcher believes studying people's ability to find their way around may help explain why loss of mental capacity occurs with age. ... > full story
Children hospitalized at alarming rate due to abuse, U.S. study finds (February 6, 2012) -- In one year alone, over 4,500 children in the United States were hospitalized due to child abuse, and 300 of them died of their injuries, researchers report in a new study. ... > full story
Positive parenting during early childhood may prevent obesity (February 6, 2012) -- Programs that support parents during their child’s early years hold promise for obesity prevention, according to a new study. ... > full story
Key to immune cell's 'internal guidance' system discovered (February 5, 2012) -- Researchers have discovered the molecular pathway that enables receptors inside immune cells to find, and flag, fragments of pathogens trying to invade a host. The discovery of the role played by the molecule CD74 could help immunologists investigate treatments that offer better immune responses against cancers, viruses and bacteria, and lead to more efficient vaccines. ... > full story
Early study suggests nanodiamonds safe for implants (February 5, 2012) -- As the number of knee and hip joint replacements grows, nanodiamond coatings could answer problems related to metal surfaces. ... > full story
A lonely heart can make you sick: Middle aged divorced women vulnerable to contracting HIV (February 3, 2012) -- Newly divorced middle aged women are more vulnerable to contract HIV and other sexually transmitted diseases, according to new research, because they tend to let their guard down with new sexual partners and avoid using protection since they are not afraid of getting pregnant. ... > full story
Regular use of vitamin and mineral supplements could reduce the risk of colon cancer, study suggests (February 3, 2012) -- Could the use of vitamin and mineral supplements in a regular diet help to reduce the risk of colon cancer and protect against carcinogens? A study published in the Canadian Journal of Physiology and Pharmacology found that rats given regular multivitamin and mineral supplements showed a significantly lower risk of developing colon cancer when they were exposed to carcinogens. ... > full story
The complex relationship between memory and silence (February 3, 2012) -- People who suffer a traumatic experience often don't talk about it, and many forget it over time. But not talking about something doesn't always mean you'll forget it; if you try to force yourself not to think about white bears, soon you'll be imagining polar bears doing the polka. A group of psychological scientists explore the relationship between silence and memories. ... > full story
Warfarin and aspirin are similar in heart failure treatment, study suggests (February 3, 2012) -- In the largest and longest head-to-head comparison of two anti-clotting medications, warfarin and aspirin were similar in preventing deaths and strokes in heart failure patients with normal heart rhythm, according to new research. ... > full story
Rare mutations may help explain aneurysm in high-risk families (February 3, 2012) -- An innovative approach to genome screening has provided clues about rare mutations that may make people susceptible to brain aneurysms, predisposing them to brain bleeds, according to preliminary research. ... > full story
New drug doesn't improve disability among stroke patients, researchers find (February 3, 2012) -- A new drug that showed promise in animal studies and an early clinical trial didn't improve disability among stroke patients, according to new research. ... > full story
Clopidogrel with aspirin doesn't prevent more small strokes, may increase risk of bleeding and death, researchers report (February 3, 2012) -- The anti-blood clot regimen that adds the drug clopidogrel (Plavix) to aspirin treatment is unlikely to prevent recurrent strokes and may increase the risk of bleeding and death in patients with subcortical stroke, according to new research. ... > full story
New device performs better than old for removing blood clots, research shows (February 3, 2012) -- An experimental blood clot-removing device outperformed the FDA-approved MERCI; retriever device, according to new research. ... > full story
Breastfeeding linked to improved lung function at school-age, especially with asthmatic mothers (February 3, 2012) -- Breastfeeding is associated with improved lung function at school age, particularly in children of asthmatic mothers, according to a new study. ... > full story
Malaria kills nearly twice as many people than previously thought, but deaths declining rapidly (February 2, 2012) -- Malaria is killing more people worldwide than previously thought -- 1.2 million -- but the number of deaths has fallen rapidly as efforts to combat the disease have ramped up, according to new research. Researchers say that deaths from malaria have been missed by previous studies because of the assumption that the disease mainly kills children under age five. ... > full story
How to tell apart the forgetful from those at risk of Alzheimer’s disease (February 2, 2012) -- It can be difficult to distinguish between people with normal age-associated memory loss and those with amnestic mild cognitive impairment (aMCI). However people with aMCI are at a greater risk of developing Alzheimer’s disease (AD), and identification of these people would mean that they could begin treatment as early as possible. New research shows that specific questions, included as part of a questionnaire designed to help diagnose AD, are also able to discriminate between normal memory loss and aMCI. ... > full story
U.S. counties with thriving small businesses have healthier residents (February 2, 2012) -- U.S. counties and parishes with a greater concentration of small, locally-owned businesses have healthier populations — with lower rates of mortality, obesity and diabetes — than do those that rely on large companies with “absentee” owners, according to a national study. ... > full story
New RNA-based therapeutic strategies for controlling gene expression (February 2, 2012) -- Small RNA-based nucleic acid drugs represent a promising new class of therapeutic agents for silencing abnormal or overactive disease-causing genes, and researchers have discovered new mechanisms by which RNA drugs can control gene activity. ... > full story
Triglyceride levels predict stroke risk in postmenopausal women (February 2, 2012) -- The traditional risk factors for stroke – such as high cholesterol – are not as accurate at predicting risk in postmenopausal women as previously thought. Instead, researchers say doctors should refocus their attention on triglyceride levels to determine which women are at highest risk of suffering a devastating and potentially fatal cardiovascular event. ... > full story
New technique successfully dissolves blood clots in brain and lowers risk of brain damage after stroke, study suggests (February 2, 2012) -- Neurologists report success with a new means of getting rid of potentially lethal blood clots in the brain safely without cutting through easily damaged brain tissue or removing large pieces of skull. ... > full story
Untangling the mysteries of Alzheimer's (February 2, 2012) -- Researchers have found new evidence that confirms the significance of a protein that neuroscientists call tau to the development of Alzheimer's disease. While earlier studies have focused on tau's aggregation into twisted structures known as "neurofibrillary tangles," the new work emphasizes intermediary steps between single protein units and the much larger tangles – small assemblages of two, three, four or more proteins, which the investigators believe are the most toxic entities in Alzheimer's. ... > full story
DNA test that identifies Down syndrome in pregnancy can also detect trisomy 18 and trisomy 13 (February 2, 2012) -- A recent study shows that a new DNA test that identifies Down syndrome in pregnancy can also detect trisomies 18 and 13. ... > full story
Elevated glucose associated with undetected heart damage (February 2, 2012) -- A new study suggests that hyperglycemia injures the heart, even in patients without a history of heart disease or diabetes. The high-sensitivity test they used detected levels of cTnT tenfold lower than those found in patients diagnosed with a heart attack. ... > full story
Rituximab possible treatment option for patients with primary biliary cirrhosis (February 2, 2012) -- An open-label study of rituximab, a monoclonal antibody for human CD20, was shown to be safe in patients with primary biliary cirrhosis who had an incomplete response to the standard ursodeoxycholic acid therapy. Rituximab was successful in reducing the level of alkaline phosphatase -- a protein used to measure liver injury, according to the new study. ... > full story
Scientists show positive effects of affirmative action policies promoting women (February 2, 2012) -- Interventions to promote women have continuously been criticized as ineffective and inhibiting performance. Economists have now rejected this criticism; they conducted a series of experiments which examined the efficiency and effects of various interventions to increase women's willingness to enter competition. ... > full story
Identical twins reveal mechanisms behind aging (February 2, 2012) -- Researchers compared the DNA of identical twins at different ages. They showed that structural modifications of the DNA, where large or small DNA segments change direction, are duplicated or completely lost, are more common in older people. The results may in part explain why the immune system is impaired with age. ... > full story
Coffee consumption reduces fibrosis risk in those with fatty liver disease, study suggests (February 2, 2012) -- Caffeine consumption has long been associated with decreased risk of liver disease and reduced fibrosis in patients with chronic liver disease. Now, new research confirms that coffee caffeine consumption reduces the risk of advanced fibrosis in those with nonalcoholic fatty liver disease. New findings show that increased coffee intake, specifically among patients with nonalcoholic steatohepatitis, decreases risk of hepatic fibrosis. ... > full story
Male and female behavior deconstructed (February 2, 2012) -- Hormones shape our bodies, make us fertile, excite our most basic urges, and as scientists have known for years, they govern the behaviors that separate men from women. But how? ... > full story
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