Rabu, 02 Maret 2011

ScienceDaily Health Headlines

for Wednesday, March 2, 2011

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Tonsillectomy linked to excess weight gain in kids (March 2, 2011) -- Tonsillectomy is the most common major surgical procedure performed in children. Children who undergo the surgical removal of their tonsils (tonsillectomy), with or without the removal of their adenoids (adenoidectomy), are at increased risk for becoming overweight after surgery, according to new research. ... > full story

Tanning bed exposure can be deadly when complicated by medication reactions (March 2, 2011) -- Use of tanning beds to "self-treat" skin eruptions can be dangerous when complicated by medication reactions according to a new study. ... > full story

Key step in the development of a norovirus treatment (March 2, 2011) -- With the number of norovirus infection cases rising across the country, scientists have successfully crystallized a key norovirus enzyme, which could help in the development of a norovirus treatment. ... > full story

Scientists synthesize long-sought-after anticancer agent (March 2, 2011) -- Scientists have synthesized for the first time a chemical compound called lomaiviticin aglycon, leading to the development of a new class of molecules that appear to target and destroy cancer stem cells. ... > full story

Popular psychology theories on self-esteem not backed up by serious research, study finds (March 2, 2011) -- Low self-esteem is associated with a greater risk of mental health problems such as eating disorders and depression. From a public health perspective, it is important for staff in various health-related professions to know about self-esteem. However, there is a vast difference between the research-based knowledge on self-esteem and the simplified popular psychology theories that are disseminated through books and motivational talks, reveals new research from Sweden. ... > full story

Findings on pollution damage to human airways could yield new therapies (March 2, 2011) -- Researchers have identified how nanoparticles from diesel exhaust damage lung airway cells, a finding that could lead to new therapies for people susceptible to airway disease. The scientists also discovered that the severity of the injury depends on the genetic make-up of the affected individual. ... > full story

Biochemists offer first 3-D model of asthma-causing inflammation enzyme (March 2, 2011) -- Scientists have developed the first 3-D model of Human 5-Lipoxygenase, or 5-LOX, the molecule responsible for creating inflammatory compounds that provoke asthma. This model will serve as a target for the design of new, more effective asthma medication. ... > full story

Unemployment: A health risk (March 2, 2011) -- Compared to people in employment, men and women who are unemployed suffer more often and longer from both physical and emotional complaints. Why should the unemployed have more health problems? ... > full story

More than allergies: Histamine may be a possible drug target for multiple sclerosis (March 1, 2011) -- If you think histamines are your nemesis during allergy season, here's something that might change your perspective. New research shows that histamine could be an important molecule to developing new treatments for multiple sclerosis. In the study, the scientists analyzed the role of histamine in an animal model of multiple sclerosis and found that histamine plays a critical role in preventing MS or lessening its effects. ... > full story

'Social-IQ score' for bacteria developed (March 1, 2011) -- Researchers have developed a "Social-IQ score" for bacteria -- and it may lead to new antibiotics and powerful bacteria-based "green" pesticides for the agricultural industry. ... > full story

Essential oil pill prevents PMS, study suggests (March 1, 2011) -- A pill containing a mix of essential oils has been shown to significantly reduce the symptoms of premenstrual syndrome. Researchers tested the tablets by carrying out a randomized, controlled trial in 120 women. ... > full story

Best friends can make a child more physically active (March 1, 2011) -- Boys and girls who take part in physical activity with their best friend in the neighborhood where they live have higher levels of physical activity, new research by academics in the UK have found. ... > full story

Happiness improves health and lengthens life, review finds (March 1, 2011) -- A review of more than 160 studies of human and animal subjects has found "clear and compelling evidence" that -- all else being equal -- happy people tend to live longer and experience better health than their unhappy peers. ... > full story

Signaling path in brain may prevent that 'I'm full' message (March 1, 2011) -- Researchers have identified a signaling pathway in the brain that's sufficient to induce cellular leptin resistance, a problem that decreases the body's ability to "hear" that it is full and should stop eating. ... > full story

Technique for measuring methane gas from cattle flatulence (March 1, 2011) -- Recently, scientists developed a methane release measuring technique as way of tracking the discharge of the gas without disrupting the regular management of the herd. ... > full story

Surgeons predict the future of nanomedicine in practice (March 1, 2011) -- A new review explores how nanotechnology may provide powerful new tools that could have a marked impact on the therapeutic and diagnostic measures available to surgeons. ... > full story

Higher job performance linked to people who are more honest and humble (March 1, 2011) -- The more honesty and humility an employee may have, the higher their job performance, as rated by the employees' supervisor. A new study that found the honesty-humility personality trait was a unique predictor of job performance. ... > full story

New CPR method increases survival rate by 50 percent, study suggests (March 1, 2011) -- A five-year clinical trial has led to a new method of cardiopulmonary resuscitation (CPR) that improves long-term survival rates with good brain function by 50 percent. ... > full story

New hope for solving Parkinson's disease puzzle (March 1, 2011) -- Scientists have discovered a protein pathway that may hold the secret to understanding Parkinson's disease. They have been working to understand the complex mechanisms of the disease for more than a decade and believe this recent discovery offers hope for the cure. ... > full story

Large proportion of colorectal cancer deaths could be prevented, study suggests (March 1, 2011) -- A large proportion of the 141,000 cases and 49,000 deaths from colorectal cancer expected in the United States this year could be prevented by increasing the use of established screening tests and by applying existing knowledge about colorectal cancer prevention, researchers say. ... > full story

Surgical instruments with electronic serial numbers (March 1, 2011) -- Gone are the days of having to compromise on surgeons' demands because of the limitations associated with metal processing: Laser melting has abolished production-related restrictions on surgical instruments. The technique permits customized tools to be manufactured in a single step and also allows the integration of additional new functions such as RFID. Researchers have now developed a surgical instrument with an integrated electronic chip. ... > full story

Beyond tender loving care: 'TLCs' promise health and happiness (March 1, 2011) -- Lifestyle changes -- such as getting more exercise, time in nature or helping others -- can be as effective as drugs or counseling to treat an array of mental illnesses, according to a new article. ... > full story

Sugar-sweetened drinks associated with higher blood pressure (March 1, 2011) -- Soda and other sugar-sweetened beverages such as fruit drinks are associated with higher blood pressure levels, according to a new study. Adults with higher sodium intake had a stronger association between sugar-sweetened beverages and high blood pressure. ... > full story

Vitamin D linked to lung cancer survival, study suggests (March 1, 2011) -- Recent research suggests vitamin D may be able to stop or prevent cancer. Now, a new study finds an enzyme that plays a role in metabolizing vitamin D can predict lung cancer survival. ... > full story

Researchers develop curious snapshot of powerful retinal pigment and its partners (March 1, 2011) -- Scientists have uncovered surprising new details about a key protein-protein interaction in the retina that contributes to the exquisite sensitivity of vision. Additionally, they say, the proteins involved represent the best-studied model of how other senses and countless other physiological functions are controlled. ... > full story

Inability to shake regrets can have effects on physical health (March 1, 2011) -- Although Edith Piaf defiantly sang, "Non, je ne regrette rien," most people will have their share of regrets over their lifetime. Indeed, anyone who seeks to overcome disappointments should compare themselves to others who are worse off -- rather than looking up to folks in more enviable positions -- according to a new study. ... > full story

New personalized therapy causes cancer cells to kill themselves (March 1, 2011) -- A physician-researcher has developed a personalized therapy to treat a wide range of cancers. The treatment is based on a naturally occurring human enzyme that has been genetically modified to fool cancer cells into killing themselves. ... > full story

Compound useful for studying birth defects may also have anti-tumor properties (March 1, 2011) -- In an interesting bit of scientific serendipity, researchers have found that a chemical compound useful for studying the origins of intestinal birth defects may also inhibit the growth and spread of cancerous tumors. ... > full story

Full bladder, better decisions? Controlling your bladder decreases impulsive choices (March 1, 2011) -- What should you do when you really, really have to "go"? Make important life decisions, maybe. Controlling your bladder makes you better at controlling yourself when making decisions about your future, too, according to a new study. ... > full story

More than 4,000 components of blood chemistry listed (March 1, 2011) -- After three years of exhaustive analysis, the list of known compounds in human blood has exploded from just a handful to more than 4,000. ... > full story

Neural circuits used in processing basic linguistic phrases identified (March 1, 2011) -- Researchers have isolated neural activity that reflects basic mechanisms used by the brain to combine elementary pieces of language in order to construct complex ideas. ... > full story

Gene variant affects stroke prognosis in humans (March 1, 2011) -- A small difference in DNA sequence predicts the degree of disability after a stroke, according to a new article. Stroke, the consequence of disturbed blood flow to the brain, can impair speech, movement and vision, but it is currently difficult for clinicians to predict the severity of these side effects or the long-term prognosis. ... > full story

'Stupid strategies' could be best for the genes (March 1, 2011) -- Blindly copying what your parents did -- no matter how stupid it may seem -- could be the best strategy for the long-term success of your genes, according to new research. ... > full story

Brain imaging provides window into consciousness (March 1, 2011) -- Using a sophisticated imaging test to probe for higher-level cognitive functioning in severely brain-injured patients provides a window into consciousness -- but the view it presents is one that is blurred in fascinating ways, say researchers. ... > full story

Parts of brain can switch functions: In people born blind, brain regions that usually process vision can tackle language (March 1, 2011) -- When your brain encounters sensory stimuli, such as the scent of your morning coffee or the sound of a honking car, that input gets shuttled to the appropriate brain region for analysis. The coffee aroma goes to the olfactory cortex, while sounds are processed in the auditory cortex. That division of labor suggests that the brain's structure follows a predetermined, genetic blueprint. However, evidence is mounting that brain regions can take over functions they were not genetically destined to perform. ... > full story

Genes associated with binge drinking identified (March 1, 2011) -- Researchers have identified two genes associated with binge drinking that may open doors to new, more effective treatments for excessive alcohol drinking. The scientists found that manipulating two receptors in the brain, GABA receptors and toll-like receptor 4, "caused profound reduction" of binge drinking for two weeks in rodents that had been bred and trained to drink excessively. ... > full story

Rituximab and fludarabine produce long-term remissions in some chronic lymphocytic leukemia patients, study suggests (March 1, 2011) -- New research shows that a combination of the targeted agent rituximab and the chemotherapeutic drug fludarabine can produce long-term remissions in some chronic lymphocytic leukemia patients without increasing the risk of later therapy-related myelodysplastic syndrome. After nearly 10 years of follow-up, 13 percent of patients had remissions lasting more than seven years. ... > full story

The influence of advertising on drug recommendations (March 1, 2011) -- A medical journal's revenue source can affect drug recommendations, with free journals positively recommending specific drugs while journals funded solely by subscriptions usually recommending against the use of the drugs, states a new study. ... > full story

Free radicals may be good for you (March 1, 2011) -- Fear of free radicals may be exaggerated, according to new research. A new study shows that free radicals act as signal substances that cause the heart to beat with the correct force. ... > full story

Acupressure effective in helping to treat traumatic brain injury, study suggests (March 1, 2011) -- A new study indicates an ancient form of complementary medicine may be effective in helping to treat people with mild traumatic brain injury, a finding that may have implications for some US war veterans returning home. ... > full story

New marker found for Sanfilippo disease (March 1, 2011) -- Researchers have described the build-up of a novel secondary metabolite in Sanfilippo disease, a discovery that could improve understanding of the pathology of Sanfillippo disease and refine diagnostic techniques. ... > full story

Storytelling program improves lives of people with Alzheimer's (March 1, 2011) -- Participation in TimeSlips, a creative storytelling intervention, improves communication and facilitates positive emotions in persons with dementia, researchers find. In the study a nursing researcher found that TimeSlips participants had increased expressions of pleasure and initiation of social communication. ... > full story

New pathogen connected to severe early childhood caries identified (February 28, 2011) -- Researchers have made a significant discovery about the nature of childhood dental disease. They have identified a new pathogen connected to severe early childhood caries (cavities). This bacterium, Scardovia wiggsiae, was present in the mouths of children with severe early childhood caries when other known pathogens such as Streptococcus mutans were not detected. This research may offer the potential to intervene and halt the progression of disease. ... > full story

Antioxidants in pecans may contribute to heart health and disease prevention (February 28, 2011) -- New research shows that after eating pecans, gamma-tocopherol levels in the body doubled and unhealthy oxidation of LDL (bad) cholesterol in the blood decreased by as much as 33 percent. ... > full story

Two knee replacements may be better than one, study finds (February 28, 2011) -- Replacing both knees in one surgery, or simultaneous total knee replacement was associated with significantly fewer prosthetic joint infections as well as other revision knee operations within one year after surgery, compared with total knee replacements performed in two separate procedures. However, simultaneous replacement was associated with a moderately higher risk of adverse cardiovascular outcomes within 30 days, according to a new study. ... > full story

First aid training for children under five years old (February 28, 2011) -- One of the reasons often given by people for not attempting first aid in emergency situations is a lack of confidence and a fear of doing more harm than good. Yet a Norwegian study on four and five year olds shows that even young children are able to learn and perform basic first aid. ... > full story

Binge eaters' dopamine levels spike at sight, smell of food (February 28, 2011) -- A brain-imaging study reveals a subtle difference between ordinary obese subjects and those who compulsively overeat, or binge: In binge eaters but not ordinary obese subjects, the mere sight or smell of favorite foods triggers a spike in dopamine -- a brain chemical linked to reward and motivation. The findings suggest that this dopamine spike may play a role in triggering compulsive overeating. ... > full story

More evidence that Alzheimer's disease may be inherited from your mother (February 28, 2011) -- Results from a new study contribute to growing evidence that if one of your parents has Alzheimer's disease, the chances of inheriting it from your mother are higher than from your father. ... > full story

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