Kamis, 03 Maret 2011

ScienceDaily Health Headlines

for Thursday, March 3, 2011

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Scientists show how men amp up their X chromosome (March 3, 2011) -- Vive la différence? Not at the level of DNA. Men must increase gene expression on their lone X chromosome to match the two X's possessed by women. A new study explains just how men manage to do that. ... > full story

Blood protein in lung cancer could improve diagnosis and treatment (March 3, 2011) -- Scientists are reporting discovery of a protein in the blood of lung cancer patients that could be used in a test for the disease -- difficult to diagnose in its earliest and most treatable stages -- and to develop drugs that stop lung cancer from spreading. ... > full story

Women get short shrift in many heart device studies, despite requirement (March 3, 2011) -- Despite a longstanding requirement for medical device makers to include women in the studies they submit to the Food and Drug Administration for device approval, very few include enough women or separately analyze how the devices work in them. Devices may be on the market without adequate data on their safety and effectiveness in women. ... > full story

Rich and poor, UK youth are happy after all? (March 3, 2011) -- Young people in the UK are very satisfied with their lives with 70 per cent rating themselves as happy or very happy. The findings indicate there is little difference between the average life satisfaction score of those children living in the household with the bottom fifth income and those children living in households in the top fifth income bracket. ... > full story

How ovarian cancer resists chemotherapy (March 3, 2011) -- Researchers have zeroed in on a genetic process that may allow ovarian cancer to resist chemotherapy. ... > full story

How much can a cell uptake? (March 3, 2011) -- Immunological research has revealed a critical component in the "decision-making" process of white blood cells that play a role in the healing process from bacterial inflammation. ... > full story

Freedom to choose leisure activities benefits people with autism (March 3, 2011) -- Free time is not always a fun time for people with autism. Giving them the power to choose their own leisure activities during free time, however, can boost their enjoyment, as well as improve communication and social skills, according to an international team of researchers. ... > full story

Protein identified that serves as a switch in a key pathway of programmed cell death (March 2, 2011) -- Scientists have identified how cells flip a switch between cell survival and cell death that involves a protein called FLIP. ... > full story

New role found for cancer protein p53 (March 2, 2011) -- The gene for the protein p53 is the most frequently mutated in human cancer. It encodes a tumor suppressor, and traditionally researchers have assumed that it acts primarily as a regulator of how genes are made into proteins. Now, researchers show that the protein has at least one other biochemical activity: controlling the metabolism of the sugar glucose, one of body's main sources of fuel. ... > full story

Parents rationalize the economic cost of children by exaggerating their parental joy (March 2, 2011) -- Any parent can tell you that raising a child is emotionally and intellectually draining. Despite their tales of professional sacrifice, financial hardship, and declines in marital satisfaction, many parents continue to insist that their children are an essential source of happiness and fulfillment in their lives. A new study suggests that parents create rosy pictures of parental joy as a way to justify the huge investment that kids require. ... > full story

Protein's elusive role in embryo and disease development unravelled (March 2, 2011) -- Scientists have determined that a single protein called FADD controls multiple cell death pathways, a discovery that could lead to better, more targeted autoimmune disease and cancer drugs. ... > full story

Joint pain in children: Is it just a sore knee, or could it be juvenile idiopathic arthritis? (March 2, 2011) -- While lab tests and imaging can sometimes help diagnose juvenile idiopathic arthritis, a physical examination and thorough patient history are the most valuable tools in identifying this disease. ... > full story

Effectiveness of wastewater treatment may be damaged during a severe flu pandemic (March 2, 2011) -- Existing plans for antiviral and antibiotic use during a severe influenza pandemic could reduce wastewater treatment efficiency prior to discharge into receiving rivers, resulting in water quality deterioration at drinking water abstraction points, according to a new article. ... > full story

Dude, you throw like a crybaby! (March 2, 2011) -- A new study of baseball tosses has found that body language is more likely to be judged as masculine when it seems to convey anger and as feminine when is seems to convey sadness. ... > full story

Amyotrophic lateral sclerosis (ALS) could be caused by a retrovirus, study suggests (March 2, 2011) -- A retrovirus that inserted itself into the human genome thousands of years ago may be responsible for some cases of the neurodegenerative disease amyotrophic lateral sclerosis (ALS), also known as Lou Gherig's disease. The finding may eventually give researchers a new way to attack this universally fatal condition. ... > full story

Good fungi might prove even better for plant, human health (March 2, 2011) -- Scientists have come closer to understanding how a common fungus "makes its living in the soil," which could lead to its possible "career change" as a therapeutic agent for plant and human health. ... > full story

Researchers predict age of T cells to improve cancer treatment (March 2, 2011) -- The effectiveness of the cancer therapy known as adoptive T cell transfer is limited by the cells' finite lifespan. Researchers have now addressed this limitation by accurately predicting cell age and quality. Infusing only young functional cells into a patient should improve the therapeutic outcome. ... > full story

Hair dyeing poised for first major transformation in 150 years (March 2, 2011) -- Technological progress may be fast-paced in many fields, but one mundane area has been almost left in the doldrums for the last 150 years: The basic technology for permanently coloring hair. That's the conclusion of an analysis of almost 500 articles and patents on the chemistry of permanent hair dyeing, which foresees much more innovation in the years ahead, including longer lasting, more-natural-looking dyes and gene therapy to reverse the gray. ... > full story

Facing the Facebook mirror can boost self-esteem (March 2, 2011) -- A new study has found that Facebook can have a positive influence on the self-esteem of college students. ... > full story

Bacteria can communicate with each other through nanotubes, researchers discover (March 2, 2011) -- A pathway whereby bacteria communicate with each other has been discovered. The discovery has important implications for efforts to cope with the spread of harmful bacteria in the body. ... > full story

Shift work may be associated with decreased risk of skin cancer (March 2, 2011) -- Melatonin is known to have cancer-protective properties, and shift work can induce desynchrony of the circadian system, reducing melatonin production. Shift work has been thought to have important health impacts, with evidence linking shift work to an increased risk of several cancers including breast, endometrial, prostate and colorectal, and non-Hodgkin lymphoma. In a recent study, researchers found that shift work may be associated with a reduced risk of skin cancer in women. ... > full story

Nitric oxide does not appear to improve treatment of sickle cell pain-attacks (March 2, 2011) -- Among patients with sickle cell disease, treatment of a vaso-occlusive crisis (characterized by episodes of severe pain) in the hospital with inhalation of nitric oxide gas for up to 3 days did not result in a shorter time to resolution of the pain, compared to patients who received placebo, according to a new study. ... > full story

Just like me: Online training helpers more effective when they resemble students (March 2, 2011) -- Opposites don't always attract. A new study shows that participants are happier -- and perform better -- when the electronic helpers used in online training programs resemble the participants themselves. ... > full story

World's most powerful optical microscope: Microscope could 'solve the cause of viruses' (March 2, 2011) -- Scientists have produced the world's most powerful optical microscope, which could help us understand the causes of many viruses and diseases. ... > full story

New cell therapy a promising atherosclerosis treatment (March 2, 2011) -- Researchers have shown in a new study on mice, that cell therapy can be used to reverse the effect of "bad" LDL cholesterol and reduce the inflammation that leads to atherosclerosis. The new cell therapymcan open the way for new therapies for stroke and myocardial infarction if the results prove translatable to humans. ... > full story

Songbird's strategy for changing its tune could inform rehab efforts (March 2, 2011) -- Scientists have discovered that the male Bengalese finch uses a simple mental computation and an uncanny memory to create its near-perfect mate-catching melody. ... > full story

Fluorescent peptides help nerves glow in surgery (March 2, 2011) -- Accidental damage to thin or buried nerves during surgery can have severe consequences, from chronic pain to permanent paralysis. Scientists may have found a remedy: injectable fluorescent peptides that cause hard-to-see peripheral nerves to glow, alerting surgeons to their location even before the nerves are encountered. ... > full story

Meditation beats dance for harmonizing body and mind (March 2, 2011) -- The body is a dancer's instrument, but is it attuned to the mind? A new study suggests that professional ballet and modern dancers are not as emotionally in sync with their bodies as are people who regularly practice meditation. ... > full story

HIV vaccine impacts the genetic makeup of the virus (March 2, 2011) -- An AIDS vaccine tested in people, but found to be ineffective, influenced the genetic makeup of the virus that slipped past. This is the first evidence that vaccine-induced cellular immune responses against HIV-1 infection exert selective pressure on the virus. The findings suggest new strategies for developing HIV vaccines that put selective pressure in a controlled manner that debilitates the virus and that avoids selecting for strains that can escape immune defenses. ... > full story

Head injury can blight survival up to 13 years later (March 2, 2011) -- A head injury can blight the chances of survival up to 13 years after the event, especially among younger adults, finds new research. ... > full story

Herbal teas may provide health benefits (March 2, 2011) -- Those who enjoy the caffeinated lift that comes from drinking traditional coffees and teas may tend to overlook the benefits of drinking herbal infusions. Now, the idea that herbal teas may provide a variety of health benefits is no longer just folklore. ... > full story

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 fatty acids pill prevents PMS, study suggests (March 1, 2011) -- A pill containing a mix of essential fatty acids 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

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

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