Kamis, 13 Januari 2011

ScienceDaily Health Headlines

for Thursday, January 13, 2011

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Adrenaline receptor 'frozen in action' by researchers (January 13, 2011) -- Adrenaline, the hormone that prepares our body to fight or flight, acts on a hyperdynamic receptor. This molecule switches so fast between several positions, that it was impossible to image it. Until now. Scientists have "frozen the molecule in action" using Xaperones, tiny, stable antibodies. ... > full story

Two medicines taken together improve control of blood pressure (January 13, 2011) -- New research shows that starting treatment of blood pressure with two medicines rather than the one produces better and faster results and fewer side effects -- findings that could change clinical practice world-wide. ... > full story

Family, friends, social ties influence weight status in young adults (January 13, 2011) -- Does obesity tend to "cluster" among young adults? And if so, what impact does it have on both their weight and weight-related behaviors? That's what researchers set out to answer to better understand how social influences affect both weight status and weight loss intentions in this difficult-to-reach age group. ... > full story

Tinnitus treatment: Rebooting the brain helps stop the ring of tinnitus in rats (January 13, 2011) -- Targeted nerve stimulation could yield a long-term reversal of tinnitus, a debilitating hearing impairment affecting at least 10 percent of senior citizens and up to 40 percent of military veterans, according to a new article. ... > full story

Robotic surgery of 'tremendous benefit' to patients (January 13, 2011) -- Robot-assisted surgery dramatically improves outcomes in patients with uterine, endometrial, and cervical cancer. Moreover, because of fewer post-operative complications and shorter hospital stays, robotic procedures also cost less. ... > full story

Comparison of medications for heart failure finds difference in risk of death (January 13, 2011) -- In a comparison of the angiotensin II receptor blockers candesartan and losartan, used by patients with heart failure, candesartan was associated with a lower risk of death at 1 and 5 years, according to a new study. ... > full story

People neglect who they really are when predicting their own future happiness (January 13, 2011) -- Humans are notoriously bad at predicting their future happiness. A new study suggests that part of the reason for these mispredictions lies in failing to recognize the key role played by one's own personality when determining future emotional reactions. ... > full story

Delivering a potent cancer drug with nanoparticles can lessen side effects (January 12, 2011) -- Researchers have shown that they can deliver the cancer drug cisplatin much more effectively and safely in a form that has been encapsulated in a nanoparticle targeted to prostate tumor cells and is activated once it reaches its target. ... > full story

MicroRNA-TP53 circuit connected to chronic lymphocytic leukemia (January 12, 2011) -- The interplay between a major tumor-suppressing gene, a truncated chromosome and two sets of microRNAs provides a molecular basis for explaining the less aggressive form of chronic lymphocytic leukemia, an international team of researchers reports. ... > full story

New laboratory aims to revolutionize surgery with real-time metabolic profiling (January 12, 2011) -- Metabolic profiling of tissue samples could transform the way surgeons make decisions in the operating theater, say researchers at a new laboratory being launched in the UK. Scientists have installed a high resolution solid state nuclear magnetic resonance (NMR) spectrometer to analyze intact tissue samples from patients taking part in studies, to investigate whether it can ultimately give surgeons detailed diagnostic information while their patients are under the knife. ... > full story

Middle school is when the right friends may matter most (January 12, 2011) -- As adolescents move from elementary school into their middle or junior-high years, changes in friendships may signal potential academic success or troubles down the road, say researchers. ... > full story

Musical chills: Why they give us thrills (January 12, 2011) -- Scientists have found that the pleasurable experience of listening to music releases dopamine, a neurotransmitter in the brain important for more tangible pleasures associated with rewards such as food, drugs and sex. ... > full story

Lab-on-a-chip developed for fast, inexpensive blood tests: Smartphone app next (January 12, 2011) -- While most blood tests require shipping a vial of blood to a laboratory for analysis and waiting several days for the results, a new device invented by a team of engineers and students uses just a pinprick of blood in a portable device that provides results in less than 30 minutes. The next step will turn blood testing into a smartphone application. ... > full story

New insight into neuronal survival after brain injury (January 12, 2011) -- A new study identifies a molecule that is a critical regulator of neuron survival after ischemic brain injury. The research may lead to new therapies that reduce damage after a stroke or other injuries that involve an interruption in blood supply to the brain. ... > full story

Virus killer gets supercharged: Discovery greatly improves common disinfectant (January 12, 2011) -- Researchers report that adding silicone to titanium dioxide, a common disinfectant, dramatically increases its ability to degrade aerosol- and water-borne viruses. ... > full story

How partners perceive each other's emotion during a fight has a huge impact on their reactions (January 12, 2011) -- Some of the most intense emotions people feel occur during a conflict in a romantic relationship. Now, psychologists show that how each person perceives the other partner's emotion during a conflict greatly influences different types of thoughts, feelings and reactions in themselves. ... > full story

Critical link between Down syndrome and Alzheimer's disease discovered (January 12, 2011) -- Researchers have discovered that the genetic mechanism which destroys brain cells is responsible for early development of Alzheimer's disease in people with Down syndrome and for development of Alzheimer's disease in general population -- providing a potential new target for drugs that could forestall dementia in people with either condition. ... > full story

'Thirdhand smoke' may be bigger health hazard than previously believed (January 12, 2011) -- Scientists are reporting that so-called "thirdhand smoke" -- the invisible remains of cigarette smoke that deposits on carpeting, clothing, furniture and other surfaces -- may be even more of a health hazard than previously believed. The study extends the known health risks of tobacco among people who do not smoke but encounter the smoke exhaled by smokers or released by smoldering cigarette butts. ... > full story

MicroRNAs could increase the risk of amputation in diabetics (January 12, 2011) -- New research has found one of the smallest entities in the human genome, micro-RNA, could increase the risk of limb amputation in diabetic patients who have poor blood flow. ... > full story

Emotional stress can change brain function (January 12, 2011) -- New research has shown that a single exposure to acute stress affected information processing in the cerebellum -- the area of the brain responsible for motor control and movement coordination and also involved in learning and memory formation. ... > full story

Scientists discover way to stop pancreatic cancer in early stages, study suggests (January 12, 2011) -- Cancer researchers have found a way to stop early stage pancreatic cancer in research models -- a result that has far-reaching implications in chemoprevention for high-risk patients. ... > full story

Eating vegetables gives skin a more healthy glow than the sun, study shows (January 12, 2011) -- New research suggests eating vegetables gives you a healthy tan. The study showed that eating a healthy diet rich in fruit and vegetables gives you a more healthy golden glow than the sun. ... > full story

Zoster vaccine associated with lower risk of shingles in older adults (January 12, 2011) -- Vaccination for herpes zoster, a painful rash commonly known as shingles, among a large group of older adults was associated with a reduced risk of this condition, regardless of age, race or the presence of chronic diseases, according to a new study. ... > full story

Men with macho faces attractive to fertile women, researchers find (January 12, 2011) -- When their romantic partners are not quintessentially masculine, women in their fertile phase are more likely to fantasize about masculine-looking men than are women paired with George Clooney types, says a new study. ... > full story

DNA blood test can cut invasive testing for Down's syndrome by 98 percent, study suggests (January 12, 2011) -- Women in high risk pregnancies for Down's syndrome could have a DNA blood test to detect the disorder and avoid invasive procedures such as amniocentesis or chorionic villus sampling, finds a large scale study. ... > full story

Anti-epileptic drugs associated with increased risk of fracture in older adults (January 12, 2011) -- Most anti-epileptic drugs are associated with an increased risk of non-traumatic fracture in individuals 50 years of age and older, according to a new study. ... > full story

Parents give boys preferential treatment when there is a chronic food shortage (January 12, 2011) -- In situations of chronic food shortage, parents are inclined to give boys a preferential treatment, despite the fact that the health of their daughters suffers more from food insecurity, according to new research. ... > full story

Common painkillers linked to increased risk of heart problems (January 12, 2011) -- Commonly used painkillers for treating inflammation can increase the risk of heart attacks and strokes, according to an analysis of the evidence. ... > full story

Knee protectors can form allergenic substances on the skin (January 12, 2011) -- Common rubber products can form isothiocyanates in contact with skin and cause contact allergy, according to new research. Isothiocyanates are a group of reactive substances that are potent contact allergens. ... > full story

Our perceptions of masculinity and femininity swayed by our sense of touch (January 12, 2011) -- Gender stereotypes suggest that men are usually tough and women are usually tender. A new study finds these stereotypes have some real bodily truth for our brains; when people look at a gender-neutral face, they are more likely to judge it as male if they're touching something hard and as female if they're touching something soft. ... > full story

How human vision perceives rapid changes: Brain predicts consequences of eye movements based on what we see next (January 12, 2011) -- Scientists have demonstrated that the brain predicts consequences of our eye movements based on what we see next. The findings have implications for understanding human attention and applications to robotics. ... > full story

DNA introduced directly into cell nucleus using protein nanodisks (January 12, 2011) -- Researchers have discovered a novel gene therapy method using particles measuring only a few nanometers which encapsulate genetic material and introduce themselves directly into the cell nucleus. The nanodisks, as researchers have named the particles, travel rapidly to the interior of the cell until reaching the nucleus, thus increasing the efficiency of the gene transfer process. ... > full story

New research aims to shut down viral assembly line (January 12, 2011) -- Scientists are studying the intricate formation of coronaviruses. The research may provide fresh insights leading to antiviral agents against viral pathogens like SARS. ... > full story

The Starbucks effect: Committed customers don't like logo redesigns, research finds (January 12, 2011) -- The negative reaction to Starbucks' redesigned logo by the company's self-described most loyal customers may be attributable to the strong connection Starbucks' consumers feel toward the brand, according to new research. ... > full story

New multiple sclerosis target identified (January 12, 2011) -- Using a mouse model, researchers have discovered that a molecular switch called EMMPRIN plays an important role in MS. The researchers explored how in MS, EMMPRIN affects MMPs and the entry of leukocytes into the CNS to result in disease activity. ... > full story

Implant appears effective for treating inflammatory disease within the eye (January 12, 2011) -- An implant that releases the medication dexamethasone within the eye appears safe and effective for the treatment of some types of uveitis (swelling and inflammation in the eye's middle layer), according to new study. ... > full story

Secret businesses aimed to exploit vaccine fears, British Medical Journal investigation finds (January 12, 2011) -- Andrew Wakefield, the disgraced doctor who claimed a link between MMR and autism, planned secret businesses intended to make huge sums of money, in Britain and America, from his now-discredited allegations, according to a British Medical Journal investigation. ... > full story

Customer representatives mean increased efficiency in radiology (January 12, 2011) -- Adding customer service representatives to a computerized radiology workflow management system means improved patient and referring physician satisfaction and increased radiologist efficiency, a new study finds. ... > full story

Feast or famine: Researchers identify leptin receptor's sidekick as a target for appetite regulation (January 11, 2011) -- A new study adds a new twist to the body of evidence suggesting human obesity is due in part to genetic factors. While studying hormone receptors in laboratory mice, neuroscientists identified a new molecular player responsible for the regulation of appetite and metabolism. ... > full story

New markers for allergic disorders derived from analysis of medical databases (January 11, 2011) -- Researchers have developed new methods for analyzing medical databases that can be used to identify diagnostic markers more quickly and to personalize medication for allergic disorders. They could also reduce the need for animal trials in clinical studies. ... > full story

Possible off-switch for anxiety discovered (January 11, 2011) -- Scientists have made a breakthrough concerning how anxiety is regulated in the vertebrate brain. The work sheds light on how the brain normally shuts off anxiety and also establishes the relevance of zebrafish as a model for human psychiatric disorders. ... > full story

Researchers inch closer to unlocking potential of synthetic blood (January 11, 2011) -- A team of scientists has created particles that closely mirror some of the key properties of red blood cells, potentially helping pave the way for the development of synthetic blood. ... > full story

Bottle rockets can cause serious eye injuries in children (January 11, 2011) -- Bottle rockets can cause significant eye injuries in children, often leading to permanent loss of vision, according to a new study. ... > full story

Body dysmorphic disorder patients who loathe appearance often get better, but it could take years (January 11, 2011) -- A new study by psychiatrists finds evidence that given enough time, patients with body dysmorphic disorder frequently recover and rarely relapse. The surprisingly high rate may be related to patients in prior studies having had especially severe cases of the disease. ... > full story

High sugar consumption may increase risk factors for heart disease in American teenagers (January 11, 2011) -- Consuming high amounts of added sugars in soft drinks and foods in adolescence is associated with poor cholesterol profiles and poor diet quality, possibly leading to heart disease in adulthood, according to new research. Teens who ate the highest levels of added sugars had lower good cholesterol levels and higher bad cholesterol and triglyceride levels than those with the lowest intake. Overweight or obese teens with the highest levels of sugars intake had increased signs of insulin resistance. ... > full story

Lifetime risk of adult rheumatoid arthritis determined (January 11, 2011) -- Researchers have determined the lifetime risk of developing rheumatoid arthritis and six other autoimmune rheumatic diseases for both men and women. ... > full story

Being poor can suppress children's genetic potentials, study finds (January 11, 2011) -- Growing up poor can suppress a child's genetic potential to excel cognitively even before the age of 2, according to research from psychologists in Texas. ... > full story

Smoking around your kindergartner could raise their blood pressure (January 11, 2011) -- Kindergartners whose parents smoke have higher blood pressure than those with non-smoking parents, according to new research. The study of more than 4,000 pre-school children in Germany is the first to show that exposure to nicotine increases the blood pressure of children as young as 4 or 5. Since childhood blood pressure tracks into adult life, researchers said youngsters exposed to cigarette smoke could have a higher risk of heart disease later in life. ... > full story

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