ScienceDaily Top Science Headlines
for Wednesday, December 2, 2009
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Scientists identify possible therapy target for aggressive cancer (December 2, 2009) -- Researchers have found that a naturally occurring protein -- transforming growth factor beta1 (TGF-ß1) -- which normally suppresses the growth of cancer cells, causes a rebound effect after a prolonged exposure. Cancer cells go into overdrive and become even more aggressive and likely to spread, the researchers report. ... > full story
Can heart disease treatments combat age-related macular degeneration? (December 2, 2009) -- Can treatments that reduce risks for cardiovascular disease also help combat age-related macular degeneration, an eye disease that affects millions of Americans? CVD and AMD share some risk factors, such as smoking, high blood pressure and inflammation. ... > full story
Binge drinking youths find getting old a drag (December 2, 2009) -- Young men who believe that happiness declines with age are more likely to engage in risky health behaviors such as binge drinking. Their misguided negative view of the aging process may act as a disincentive to behave 'sensibly' and encourage them to make the most of the present in anticipation of 'miserable' old age, according to new findings. ... > full story
Heart failure linked to gene variant affecting vitamin D activation (December 2, 2009) -- Previous studies have shown a link between low vitamin D status and heart disease. Now a new study shows that patients with high blood pressure who possess a gene variant that affects an enzyme critical to normal vitamin D activation are twice as likely as those without the variant to have congestive heart failure. ... > full story
High urea levels in chronic kidney failure might be toxic after all (December 2, 2009) -- It is thought that the elevated levels of urea (the byproduct of protein breakdown that is excreted in the urine) in patients with end-stage kidney failure are not particularly toxic. However, researchers have now generated evidence in mice that high levels of urea are indeed toxic. Blocking the effects of high levels of urea might therefore be of benefit to patients with end-stage kidney disease. ... > full story
New safety concern related to antipsychotic treatment (December 2, 2009) -- Overall, antipsychotic medications are reasonably effective, and fairly well tolerated treatments for mood and psychotic disorders. However, treatment with a number of antipsychotic medications is associated with weight gain, and for some, hyperglycemia and hyperlipidemia. In a new article, researchers discuss this cluster of metabolic side effects and how it may contribute to the risk for diabetes, hypertension, and other medical disorders associated with heart disease. ... > full story
Sugary cola drinks linked to higher risk of gestational diabetes (December 1, 2009) -- Researchers have found for the first time that drinking more than 5 servings of sugar- sweetened cola a week prior to pregnancy appears to significantly elevate the risk of developing diabetes during pregnancy. ... > full story
CDC confirms four new cases of oseltamivir (Tamiflu)-resistant H1N1 (December 1, 2009) -- Tests performed by the Centers for Disease Control and Prevention at the request of infectious disease experts have confirmed that isolates from four patients with H1N1 influenza at Duke University Hospital during October and November were found to be resistant to oseltamivir (Tamiflu). ... > full story
Facebook profiles capture true personality, according to new psychology research (December 1, 2009) -- Online social networks such as Facebook are being used to express and communicate real personality, instead of an idealized virtual identity, according to new research from psychologists. ... > full story
New mechanism of blocking HIV-1 from entering cells identified (December 1, 2009) -- Researchers have found a novel mechanism by which drugs block HIV-1 from entering host cells. ... > full story
Elastography reduces unnecessary breast biopsies (December 1, 2009) -- Elastography is an effective, convenient technique that, when added to breast ultrasound, helps distinguish cancerous breast lesions from benign results, according to an ongoing study. ... > full story
New discoveries about the experience of anger (December 1, 2009) -- Younger people, those with children and less-educated individuals are more likely to experience anger, according to new research that examines one of the most common negative emotions in society. ... > full story
Will copper keep us safe from the superbugs? (December 1, 2009) -- New research suggests that copper might have a role in the fight against health care-associated infections. ... > full story
Glucose intolerance in pregnancy associated with postpartum cardiovascular risk (December 1, 2009) -- Women who have gestational glucose intolerance (a condition less severe than gestational diabetes) exhibit multiple cardiovascular risk factors as early as three months after birth, according to a new study. ... > full story
Believers' inferences about God's beliefs are uniquely egocentric (December 1, 2009) -- Religious people tend to use their own beliefs as a guide in thinking about what God believes, but are less constrained when reasoning about other people's beliefs, according to a new study. ... > full story
Heavy metal paradox could point toward new therapy for Lou Gehrig's disease (December 1, 2009) -- New discoveries have been made about how an elevated level of lead, which is a neurotoxic heavy metal, can slow the progression of amyotrophic lateral sclerosis, or Lou Gehrig's disease -- findings that could point the way to a new type of therapy. ... > full story
New study released on World AIDS Day measures HIV anti-retroviral regimens' safety and efficacy (December 1, 2009) -- A study released on World AIDS Day reports that viral failure, the point at which medication can no longer suppress the HIV infection, was twice as likely and happened sooner among patients initiating anti-retroviral therapy with high viral loads who were given Epzicom when compared to similar patients treated with Truvada. ... > full story
First metallic nanoparticles resistant to extreme heat (December 1, 2009) -- Scientists overcame a major hurdle plaguing the development of nanomaterials such as those that could lead to more efficient catalysts used to produce hydrogen and render car exhaust less toxic. The researchers reported the first demonstration of high-temperature stability in metallic nanoparticles, the vaunted next-generation materials hampered by a vulnerability to extreme heat. ... > full story
Homicide rates linked to trust in government, sense of belonging, study suggests (December 1, 2009) -- When Americans begin routinely complaining about how they hate their government and don't trust their leaders, it may be time to look warily at the homicide rate. A historian tried to make sense of changing homicide rates by sifting through records of tens of thousands of homicides in the United States and western Europe over the past four centuries. ... > full story
Scientists create mouse with key features of HIV infection without being infected with HIV (December 1, 2009) -- A major obstacle to HIV research is the virus's exquisite specialization for its human host -- meaning that scientists' traditional tools, like the humble lab mouse, can deliver only limited information. Now, a team of researchers has made an ingenious assault on this problem by creating a mouse that has key features of HIV infection without being infected with HIV. ... > full story
Surgeons offering new procedure for acid reflux, GERD (December 1, 2009) -- Surgeons are now offering patients an incisionless alternative to laparoscopic and traditional surgery for treatment of acid reflux or GERD. ... > full story
Patients say 'no thanks' to risky medical treatments (December 1, 2009) -- A recent study suggests that increasing patient responsibility for making medical decisions may decrease their willingness to accept risky treatment options. ... > full story
Stroke and heart disease trigger revealed (December 1, 2009) -- Scientists have identified the trigger that leads to the arteries becoming damaged in the disease atherosclerosis, which causes heart attacks and strokes. The authors of the study say their findings suggest that the condition could potentially be treated by blocking the molecule that triggers the damage. The research also suggests that bacteria may be playing a part in the disease. ... > full story
Probiotic found to be effective treatment for colitis in mice (December 1, 2009) -- The probiotic, Bacillus polyfermenticus, can help mice recover from colitis. Mice treated with B.P. during the non-inflammatory period of the disease had reduced rectal bleeding, their tissues were less inflamed and they gained more weight than mice that did not receive the treatment. ... > full story
Evolutionary arms race between bacteria and their viruses in soil (December 1, 2009) -- Viruses of soil bacteria (phages) evolve to improve their ability to infect the bacterial hosts that surround them. This is shown in a new study. Phages appear to be better able to infect bacteria from the same small soil sample than bacteria from just a few centimeters away. Evolution can therefore restructure ecosystems on a very small scale. ... > full story
Beverage can stay-tabs pose swallowing risk (December 1, 2009) -- Three decades ago, a study revealed that beverage can pull-tabs were being swallowed by children, prompting a switch by US manufacturers to stay-tabs. But in a new study, researchers found that the new tabs are still potentially unsafe. ... > full story
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