Kamis, 17 Februari 2011

ScienceDaily Health Headlines

for Thursday, February 17, 2011

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Drug therapy shows significant benefit in treating a leading cause of childhood blindness (February 17, 2011) -- A readily available, inexpensive drug therapy showed a significant benefit in treating premature infants with the worst and historically most difficult-to-treat cases of retinopathy of prematurity. ... > full story

Eating berries may lower risk of Parkinson's (February 17, 2011) -- New research shows men and women who regularly eat berries may have a lower risk of developing Parkinson's disease, while men may also further lower their risk by regularly eating apples, oranges and other sources rich in dietary components called flavonoids. ... > full story

Biomarker could make diagnosing knee injury easier, less costly, othopaedists say (February 17, 2011) -- A recently discovered biomarker could help doctors diagnose a common type of knee injury, according to a new study. ... > full story

Security weaknesses in file-sharing methods used in clinical trials revealed (February 17, 2011) -- Patients who participate in clinical trials expect that their personal information will remain confidential, but a recent study found that the security practices used to transfer and share sensitive files were inadequate. ... > full story

Who's the boss? Americans respond faster to those with high social status (February 17, 2011) -- A new study examines how White Americans and Chinese people in China respond to pictures of their boss, suggesting cultural differences in our responses to authority figures. ... > full story

Whole genome sequencing used to help inform cancer therapy (February 17, 2011) -- Whole genome sequencing -- spelling out a person's entire DNA genetic code -- has moved one step closer to being a medical option for direct patient care. ... > full story

Customized knee replacement depends on surgeon's skill, not implant design, study finds (February 17, 2011) -- While the choices of knee implants are plentiful, the success of total knee replacement surgery still is dependent on the surgeon's skill, researchers say. ... > full story

Risks for quitting college identified (February 17, 2011) -- College students who consider dropping out are particularly sensitive to a handful of critical events including depression and loss of financial aid, according to a new study. ... > full story

Dwarfism gene linked to protection from cancer and diabetes (February 16, 2011) -- A long-term study finds extremely low incidence of cancer and diabetes among individuals with a growth-stunting genetic defect. The authors ask whether controlling growth hormone in healthy adults might provide similar protection. ... > full story

Bleeding disorder often misdiagnosed, study suggests (February 16, 2011) -- A rare bleeding disorder that can lead to life-threatening bleeding episodes is misdiagnosed in 15 percent of cases according to new findings. ... > full story

Statin may affect markers associated with progression of HIV, trial suggests (February 16, 2011) -- A recent multicenter clinical trial of atorvastatin found that although the drug did not inhibit plasma HIV RNA levels, it did inhibit expression of cellular markers of immune activation and inflammation in patients with HIV infection. ... > full story

To escape blame, be a victim, not a hero, new study finds (February 16, 2011) -- Great works and praiseworthy behavior may bring respect and admiration, but these won't help us to escape blame when we do something wrong, says a new study by researchers at the University of Maryland and Harvard University. To do that, the researchers say, one needs to be a victim not a hero! ... > full story

Brain insulin plays critical role in the development of diabetes (February 16, 2011) -- Researchers have discovered a novel function of brain insulin, indicating that impaired brain insulin action may be the cause of the unrestrained lipolysis that initiates and worsens Type 2 diabetes in humans. ... > full story

New pneumococcal vaccine approach successful in early tests; Vaccine inhibits bacteria by mimicking naturally-acquired immunity (February 16, 2011) -- Pneumococcus (Streptococcus pneumoniae) accounts for as much as 11 percent of mortality in young children worldwide. While successful vaccines exist, they are expensive and only work against specific pneumococcal strains, with the risk of becoming less effective as new strains emerge. Researchers have now developed a new vaccine candidate that is potentially cheaper and able to protect against any pneumococcal strain. ... > full story

Dial 5683 for love: Dialing certain numbers on a cell phone changes your emotional state (February 16, 2011) -- A psychological scientist in Germany has found a way that cell phones, and specifically texting, have hacked into our brains. Just by typing the numbers that correspond to the letters in a word like "love," we can activate the meaning of that word in our minds. ... > full story

Hearing with your nose: How nasal stem cells could tackle childhood hearing problems (February 16, 2011) -- Stem cell scientists have found that patients suffering from hearing problems which began during infancy and childhood could benefit from a transplant of stem cells from their nose. The research reveals that mucosa-derived stem cells can help preserve hearing function during the early-onset of sensorineural hearing loss. ... > full story

Using chlorhexidine gluconate baths to reduce hospital-acquired infections (February 16, 2011) -- A new study has found a reduced risk of hospital-acquired infections when using two percent chlorhexidine gluconate cloths for daily bathing instead of soap and water. The study found a 64 percent decrease in the risk of acquiring an infection from either methicillin-resistant Staphylococcus aureus or Vancomycin-resistant Enterococcus. ... > full story

Got a goal? A helpful partner isn't always helpful (February 16, 2011) -- You might think that a loving partner helps keep you on track -- say, when you want to stick to your jogging or concentrate on your studies. But a new study reports the opposite: Thinking about the support a significant other offers in pursuing goals can undermine the motivation to work toward those goals -- and can increase procrastination before getting down to work. ... > full story

Increasing brain enzyme may slow Alzheimer's disease progression; Study finds damaging accumulation of tau proteins removed (February 16, 2011) -- Increasing a naturally occurring enzyme in the brain slowed the damaging accumulation of tau proteins that are toxic to nerve cells and eventually lead to the neurofibrillary tangles, a major pathological hallmark of Alzheimer's disease and other forms of dementia. ... > full story

Losing hair at 20 is linked to increased risk of prostate cancer in later life, study finds (February 16, 2011) -- Men who start to lose hair at the age of 20 are more likely to develop prostate cancer in later life and might benefit from screening for the disease, according to a new study. ... > full story

Researchers model fetal-to-adult hemoglobin switching: Important step towards cure for blood diseases (February 16, 2011) -- Researchers have engineered mice that model the switch from fetal to adult hemoglobin, an important step towards curing genetic blood diseases such as sickle cell anemia and beta-thalassemia. ... > full story

Drivers engaging in a secondary task may pay more attention to the road, study suggests (February 16, 2011) -- Although many human factors/ergonomics studies conducted over the past few years indicate that drivers who talk on the phone fail to attend to the road and increase the likelihood of an accident, the monotony of driving may also pose an accident risk. ... > full story

Scientists discover cell of origin for childhood muscle cancer (February 16, 2011) -- Researchers have defined the cell of origin for a kind of cancer called sarcoma. They report that childhood and adult sarcomas are linked in their biology, mutations and the cells from which these tumors first start. These findings may lead to nonchemotherapy medicines that can inhibit "molecular targets" such as growth factor receptors, thereby stopping or eradicating the disease. ... > full story

Surgery without incisions for heartburn (February 16, 2011) -- Millions of Americans, or 10 percent of the population, suffer from daily heartburn or other symptoms of reflux such as regurgitation, chronic cough, hoarseness and dental erosion. In a city like Austin, as many as 180,000 to 210,000 people may suffer from heartburn/reflux. ... > full story

Analysis of violent deaths of Iraqi civilians between 2003-2008 (February 16, 2011) -- A new article provides the most detailed assessment thus far of civilian deaths in the course of the recent Iraq war. ... > full story

Zinc reduces the burden of the common cold (February 16, 2011) -- Zinc supplements reduce the severity and duration of illness caused by the common cold, according to a systematic review. The findings could help reduce the amount of time lost from work and school due to colds. ... > full story

Lavender oil has potent antifungal effect (February 16, 2011) -- Lavender oil could be used to combat the increasing incidence of antifungal-resistant infections, according to a new study. The essential oil shows a potent antifungal effect against strains of fungi responsible for common skin and nail infections. ... > full story

Overabundance of protein expands breast cancer stem cells; Two drugs block cancer-promoting chain of events (February 16, 2011) -- An essential protein for normal stem cell renewal also promotes the growth of breast cancer stem cells when it's overproduced in those cells, researchers report. ... > full story

Wireless device helps athletes get the most out of exercise (February 16, 2011) -- New research from the UK could help athletes train to their maximum potential without putting undue pressure on their muscles. A special wireless device -- called the iSense -- has been devised which is capable of predicting and detecting the status of muscles during training and can be adapted to any sport. ... > full story

Video games to enhance learning (February 16, 2011) -- It's a frustrating problem for many of today's parents: Little Jacob or Isabella is utterly indifferent to schoolwork during the day but then happily spends all evening engrossed in the latest video game. The solution isn't to banish the games, says one researcher. A far better approach, she says, is to make the learning experience more enjoyable by creating video games into which educational content and assessment tools have been surreptitiously added -- and to incorporate such games into school curricula. ... > full story

New study finds no cognitive impairment among ecstasy users (February 16, 2011) -- In contrast to many prior studies, ecstasy users in a new study showed no signs of cognitive impairment attributable to drug use: ecstasy use did not decrease mental ability. ... > full story

Atomic model of tropomyosin bound to actin (February 16, 2011) -- New research sheds light on the interaction between the semi-flexible protein tropomyosin and actin thin filaments. The study provides the first detailed atomic model of tropomyosin bound to actin and significantly advances the understanding of the dynamic relationship between these key cellular proteins. ... > full story

Alcohol's disruptive effects on sleep may be more pronounced among women (February 16, 2011) -- Researchers have known for decades that alcohol can initially deepen sleep during the early part of the night but then disrupt sleep during the latter part of the night; this is called a "rebound effect." A new study of the influence of gender and family history of alcoholism on sleep has found that intoxication can increase feelings of sleepiness while at the same time disrupt actual sleep measures in healthy women more than in healthy men. ... > full story

Good diets fight bad Alzheimer's genes: Diets high in fish oil have a beneficial effect in patients at risk, researcher says (February 16, 2011) -- Recent research suggests that a diet high in omega-3 oils and low in cholesterol can significantly reduce the negative affects of the APOE4 gene, which is an indicator of Alzheimer's disease. ... > full story

Designing new molecular tools to study the life and death of a cancer cell (February 16, 2011) -- Basic and translational research on cancer, and development of new cancer therapeutics, has focused on different aspects of cancer cellular function. One area of focus is the life and death of a cancer cell. In a new study, scientists have developed new synthetic molecules as models to study the structural and functional role of the proline residue and tetrapeptide sequence important for the regulation of cancer cell apoptosis by the XIAP protein. ... > full story

One third of us have tried dating websites with middle-aged suitors using them most (February 16, 2011) -- A new study suggests that nearly one in three of us who use the internet have visited online dating sites. An international survey of 24,000 men and women who are presently online found that just six per cent had gone to dating websites in 1997 but by 2009, 30 per cent of the sample had tried them with 15 per cent finding their current partner that way. ... > full story

Mental retardation gene provides insights into brain formation (February 15, 2011) -- Scientists have uncovered new clues to memory and learning by exploring the function of a single gene, and at the same time, have provided insights into a form of human mental retardation. ... > full story

Active wound healing can accelerate tumor formation, study finds (February 15, 2011) -- Processes that are involved in active wound healing can lead to an increased risk for basal cell carcinoma in the skin, according to a new study. ... > full story

New malaria vaccine depends on … mosquito bites? (February 15, 2011) -- The same menace that spreads malaria -- the mosquito bite -- could help wipe out the deadly disease, according to researchers working on a new vaccine. ... > full story

Method of DNA repair linked to higher likelihood of genetic mutation (February 15, 2011) -- Accurate transmission of genetic information requires the precise replication of DNA. Errors in DNA replication are common and nature has developed several cellular mechanisms for repairing these mistakes. Mutations, which can be deleterious (development of cancerous cells), or beneficial (evolutionary adaption), arise from uncorrected errors. Researchers report that a method by which cells repair breaks in their DNA, known as break-induced replication, is up to 2,800 times more likely to cause genetic mutation than normal DNA synthesis. ... > full story

You are what you app: Choice of smartphone applications define your computing style (February 15, 2011) -- The applications you add to your smartphone can label you as a specific "appitypes," says a professor of science and technology studies. ... > full story

'Healthy' patients at high risk of cardiac death identified (February 15, 2011) -- The way the heart responds to an early beat is predictive of cardiac death, especially for people with no conventional markers of cardiovascular disease, according to new research. ... > full story

Obesity and knee osteoarthritis shorten healthy years of life (February 15, 2011) -- Due to obesity and symptomatic knee osteoarthritis, Americans over the age of 50 will together lose the equivalent of 86 million healthy years of life, concluded researchers who investigated the potential gains in quality and quantity of life that could be achieved averting losses due to obesity and knee OA. ... > full story

Why problem drinking during adolescence is never a 'phase' (February 15, 2011) -- The Rutgers Alcohol Problem Index (RAPI) is widely used to assess adolescent drinking-related problems. Researchers used adolescent RAPI scores to(examine diagnoses of alcohol dependence during young adulthood. More drinking-related problems experienced at age 18 were associated with a diagnosis of alcohol dependence at age 25, and this predictive(association was stronger in females than males. ... > full story

Molecular link between reproduction in yeast and humans (February 15, 2011) -- A novel study draws a completely unexpected link between reproductive proteins in humans and proteins involved in fertilization in invertebrates, as well as mating between haploid cells in yeast. Because human and yeast are separated by 1 billion years of evolution, these findings may have important implications for our understanding of the molecular mechanisms underlying sex, and how they originated. ... > full story

Hearing loss associated with development of dementia (February 15, 2011) -- Older adults with hearing loss appear more likely to develop dementia, and their risk increases as hearing loss becomes more severe, according to a new article. ... > full story

Gene that regulates immune system linked to preeclampsia (February 15, 2011) -- Researchers have discovered that the placentas of women who suffer preeclampsia during pregnancy have an overabundance of a gene associated with the regulation of the body's immune system. ... > full story

Many consumers believe 36 months is longer than 3 years (February 15, 2011) -- Consumers often have a distorted view when they compare information that involves numbers, according to a new study. ... > full story

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