ScienceDaily Health Headlines
for Monday, March 21, 2011
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Making viruses pass for 'safe' (March 21, 2011) -- Viruses can penetrate every part of the body, making them potentially good tools for gene therapy or drug delivery. But with our immune system primed to seek and destroy these foreign invaders, delivering therapies with viruses is currently inefficient and can pose a significant danger to patients. ... > full story
New gene sites affecting nonalcoholic fatty liver disease discovered (March 21, 2011) -- Five genetic variants in humans -- four new -- associate with nonalcoholic fatty liver disease, according to a study. ... > full story
Hormone pathway to fatty liver disease uncovered (March 21, 2011) -- Scientists have discovered how a change in growth hormone activity in mice leads to fatty liver disease, a condition whose human counterpart is of rising concern worldwide. ... > full story
Message to postmenopausal women: 'Increase yearly dental checkups,' researcher urges (March 21, 2011) -- Postmenopausal women have a new health message to hear. Two annual dental checkups aren't enough. Older women need more, according to new research findings. That message comes from a comparison study of women on and off bone-strengthening bisphosphonate therapies for osteoporosis. ... > full story
Important structure in the transmission of light signals deciphered (March 21, 2011) -- Scientists have made a new discovery in the basics of signal transduction research. They were able to clarify for the first time, in an important information carrier in the human body, the receptor protein rhodopsin, how such a protein must be designed to accommodate a light signal. ... > full story
Psychosocially hazardous neighborhoods associated with worse cognitive function in some older adults (March 21, 2011) -- Residing in a psychosocially hazardous neighborhood is associated with worse cognitive function in older age for persons with the apolipoprotein E µ4 allele (an alternative form of the gene), according to a new report. ... > full story
Economics and evolution help scientists identify new strategy to control antibiotic resistance (March 20, 2011) -- Scientists have taken lessons from Adam Smith and Charles Darwin to devise a new strategy that could one day slow, possibly even prevent, the spread of drug-resistant bacteria. The scientists show that bacterial gene mutations that lead to drug resistance come at a biological cost not borne by nonresistant strains. ... > full story
Modified mRNA is the key to novel anti-cancer therapy, experts offer (March 20, 2011) -- Modern gene therapies raise hopes of combating many diseases until now considered terminal. Today, however, the methods are expensive and carry a risk of severe complications. Modifications to ribonucleic acid mRNA may offer safer and more effective gene drug alternatives. Clinical trials of the first new-generation anti-cancer vaccine will begin later this year. ... > full story
Virtual conversation simulator found beneficial for adults with autism (March 20, 2011) -- Simulated interactions in which adults with autism converse with a virtual partner may help them develop better social interaction skills, according to a novel study. ... > full story
Researchers find indirect path to attack breast cancer stem cells (March 20, 2011) -- Scientists have identified a potential new way of attacking breast cancer stem cells, the small number of cells in a tumor that fuel its growth and spread. ... > full story
Tests on century-old equipment show how far X-rays have come (March 20, 2011) -- Researchers recently tested first-generation x-ray equipment from 1896 and found that it produced radiation doses and exposure times that were vastly higher than those of today's systems, according a new study. ... > full story
Are whole-body image scanners used for U.S. airport security safe? (March 20, 2011) -- The Transportation Security Administration has begun to use whole-body imaging scanners as a primary screening measure on travelers passing through airport security checkpoints. One type of scanner currently deployed at airports uses backscatter X-rays that expose the individual being screened to very low levels of ionizing radiation. Two new articles address the question of what potential long-term public health threats backscatter X-ray systems pose. ... > full story
U.S. death rate falls for 10th straight year (March 20, 2011) -- The age-adjusted death rate for the U.S. population fell to an all-time low of 741 deaths per 100,000 people in 2009 -- 2.3 percent lower than the 2008 rate, according to preliminary 2009 death statistics. This marks the 10th year in a row that U.S. deaths rates have declined. ... > full story
Radiation risks to health: A joint statement from leading scientific experts (March 20, 2011) -- The growing concern surrounding the release of radiation from an earthquake and tsunami-stricken nuclear complex in Japan has raised fears of radiation exposure to populations in North America from the potential plume of radioactivity crossing the Pacific Ocean. Experts have issued a statement to help Americans understand their radiation-related health risks. ... > full story
Americans like their drinks 'sickeningly sweet' but new labeling may make a difference (March 20, 2011) -- Americans may like their drinks "sickeningly sweet" but a new labeling initiative may discourage us from pouring on the unnecessary calories, said a medical weight-loss specialist. ... > full story
Enzyme can steer cells or possibly stop them in their tracks (March 19, 2011) -- Researchers have discovered that members of an enzyme family found in humans and throughout the plant and animal kingdoms play a crucial role in regulating cell motility. Their findings suggest an entirely new strategy for treating conditions ranging from diabetic ulcers to metastatic cancer. ... > full story
Secrets of plague revealed through super-resolution microscopy technique (March 19, 2011) -- In work that is pushing the "diffraction barrier" associated with microscopic imaging of living cells, researchers have demonstrated the power of a new super-resolution microscopy technique called Stochastic Optical Reconstruction Microscopy (STORM), which can simultaneously image multiple molecules in living immune cells. ... > full story
Terminology matters in parents' willingness to enroll their children in research (March 19, 2011) -- When presented with different terms to describe a clinical trial, parents were far more likely to consent to enroll their child if it was called a "research study" than if it was called a "medical experiment" or a "research project," in large part because they perceived the former as safer, even though that was not necessarily the case, according to a new report. ... > full story
Transmissible treatment proposed for HIV could target superspreaders to curb epidemic (March 19, 2011) -- Researchers propose a fundamentally new intervention for the HIV/AIDS epidemic based on engineered, virus-like particles that could subdue HIV infection within individual patients and spread to high-risk populations that are difficult for public health workers to reach. A model shows that their approach could work in concert with current treatments for HIV infection and lower the prevalence of infection more effectively than current drugs or proposed vaccines alone. ... > full story
World record for DNA analysis (March 19, 2011) -- Until recently, researchers have been limited to running just a few DNA samples at a time, at a cost of about ,000 U.S. per run. Now researchers have hit upon a new method that allows 5,000 samples to be run at the same time and at the same price. This cuts the cost per sample result considerably and constitutes a world record for the number of tests run in a single DNA sequencing analysis. ... > full story
Electricity sparks interest in new technologies and cosmeceuticals for aging skin (March 19, 2011) -- It may seem as if new developments to combat aging skin are being introduced faster than the speed of light. At the forefront of the research, dermatologists are underpinning these advancements, refining the basic understanding of how the skin ages in order to develop more effective non-invasive cosmetic procedures and products. Now, as an alternative to laser light -- used successfully for years to make skin appear younger -- dermatologists are investigating electricity. ... > full story
'Bilingual' neurons may reveal the secrets of brain disease (March 18, 2011) -- Researchers have discovered a type of "cellular bilingualism" -- a phenomenon that allows a single neuron to use two different methods of communication to exchange information. ... > full story
Epilepsy and coordination disorders: Important role for the cerebellum (March 18, 2011) -- Hereditary diseases such as epilepsy or various coordination disorders may be caused by changes in nerve cells of the cerebellum, which do not set in until after birth. ... > full story
Sad dads spank more, read less, study finds (March 18, 2011) -- Depression in fathers can negatively affect a young child's health and development. Compared to their non-depressed counterparts, depressed fathers are nearly four times more likely to report spanking their child, according to a new study. Depressed dads are also less likely to read to their children, the study found. ... > full story
Hospital infections: Unique antibody from llamas provide weapon against Clostridium difficile (March 18, 2011) -- Researchers say they are gaining a deeper understanding of virulent hospital infection and are closer to developing a novel treatment using antibodies from llamas. ... > full story
New study adds weight to diabetes drug link to heart problems (March 18, 2011) -- A new study adds to mounting evidence that rosiglitazone -- a drug used to treat Type 2 diabetes -- is associated with an increased risk of major heart problems. ... > full story
Japanese tsunami underscores need for elder disaster preparedness (March 18, 2011) -- The oldest segment of Japan's population will likely be the hardest hit as a result of the recent earthquake and subsequent tsunami, based on data from previous catastrophic events. Approximately 23 percent of Japanese citizens currently are age 65 and above. ... > full story
New targeted drug helps smokers quit (March 18, 2011) -- Researchers have been developing a targeted drug that could aid in smoking reduction therapy. The new drug slows down the metabolism of nicotine, which would help smokers to cut down their smoking. ... > full story
Insight into parasite 'family planning' could help target malaria (March 18, 2011) -- Fresh insight into the way the parasite that causes malaria reproduces could lead to new treatments to help curb the spread of the disease. ... > full story
Self-administered light therapy may improve cognitive function after traumatic brain injury (March 18, 2011) -- At-home, daily application of light therapy via light-emitting diodes placed on the forehead and scalp led to improvements in cognitive function and post-traumatic stress disorder in patients with a traumatic brain injury, according to a new study. ... > full story
Personlized dendritic cell vaccine increases survival in patients with deadly brain cancer (March 18, 2011) -- A dendritic cell vaccine personalized for each individual based on the patient's own tumor may increase median survival time in those with a deadly form of brain cancer called glioblastoma, an early phase study has found. ... > full story
Cranky? On a diet? How self-control leads to anger (March 18, 2011) -- People who make an effort to exert self-control are attracted to aggressive art and public policy appeals, according to a new study. They also don't appreciate messages that nag them to control their behavior. ... > full story
Possible biomarker and therapeutic target for melanoma discovered (March 18, 2011) -- Researchers have identified a potential new biomarker and therapeutic target for melanoma. The novel cell screening method used in the study also clarifies the process behind tumor metastasis and may allow the identification of biomarkers for other aggressive cancers. ... > full story
Resveratrol may be useful tool for reducing body fat (March 18, 2011) -- Scientists have studied the fat-reducing effect of CLA and resveratrol. Resveratrol reduces the accumulation of triglycerides, in part by activation of lipolysis, in both the adipocytes of mice and of humans, new research suggests. Resveratrol is found in red grape skins and red wine. ... > full story
Psychologists design 60-minute exercise that raises GPAs of minority students (March 18, 2011) -- What could you do for an hour in the first year of college that would improve minority students' grades over the next three years, reduce the racial achievement gap by half and, years later, make students happier and healthier? The answer, psychologists suggest, involves an exercise to help make students feel confident they belong in college. ... > full story
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