ScienceDaily Health Headlines
for Tuesday, July 6, 2010
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Virgin olive oil and a Mediterranean diet fight heart disease by changing how our genes function (July 6, 2010) -- Everyone knows olive oil and a Mediterranean diet are associated with a lower risk for cardiovascular disease, but a new research report offers a surprising reason why: these foods change how genes associated with atherosclerosis function. ... > full story
New research model of human prostate cancer shows cancer development (July 6, 2010) -- Progress toward understanding the role of sex hormones in the growth of prostate cancer -- the most common cancer in US men -- has been hindered by the lack of a suitable laboratory research model. Now researchers say they have developed the first model of hormone-induced human prostate cancer initiation and progression. ... > full story
Kids now see fewer television ads for sweets and beverages, but more for fast food (July 6, 2010) -- Children saw fewer television advertisements for certain foods, including those for sweets and beverages, in 2007 compared with 2003, according to a new study. However, children now see more fast-food ads, and racial gaps in exposure to all food advertising have increased. ... > full story
Experimental nonsteroidal treatment of asthma shows promise (July 6, 2010) -- A new nonsteroidal, anti-inflammatory therapy made from a human protein significantly decreases disease signs of asthma in mice, opening the possibility of a new asthma therapy for patients who do not respond to current steroid treatments. ... > full story
Antagonizing atherosclerosis (July 6, 2010) -- Antibody-producing B cells promote atherosclerosis in mice, according to a new study. These findings came as a surprise, as prior studies had suggested that B cells help protect against the disease. ... > full story
Heart patients with anxiety disorder experience more cardiovascular events, deaths (July 6, 2010) -- Among patients with heart disease, anxiety disorders appear to be associated with a higher risk of stroke, heart attack, heart failure and death, according to a new study. ... > full story
Treating tongue tie could help more babies breastfeed (July 5, 2010) -- When the connective tissue under a newborn's tongue is too tight, it prevents the baby from being able to breastfeed properly. A simple surgical snip can fix the problem, but many doctors do not perform the procedure. ... > full story
Nano-sized advance toward next big treatment era in dentistry (July 5, 2010) -- Scientists are reporting an advance toward the next big treatment revolution in dentistry -- the era in which root canal therapy brings diseased teeth back to life, rather than leaving a "non-vital" or dead tooth in the mouth. Researchers now describe a first-of-its-kind, nano-sized dental film that shows early promise for achieving this long-sought goal. ... > full story
More than 2 billion people worldwide lack access to surgical services (July 5, 2010) -- More than two billion people worldwide do not have adequate access to surgical treatment, according to a new study. ... > full story
Personalized approach to smoking cessation may be reality in 3-5 years (July 5, 2010) -- A personalized approach to smoking cessation therapy is quickly taking shape. New evidence suggests that combining information about a smoker's genetic makeup with his or her smoking habits can accurately predict which nicotine replacement therapy will work best. ... > full story
Cancer stem cells are not 'one size fits all,' lung cancer models show (July 5, 2010) -- Cancer stem cells have enticed scientists because of the potential to provide more durable and widespread cancer cures by identifying and targeting the tumor's most voracious cells. Now, researchers have identified cancer stem cells in a model of the most common form of human lung cancer and, more significantly, have found that the cancer stem cells may vary from tumor to tumor, depending upon the tumor's genetic signature. ... > full story
High BMI linked to proximity to convenience stores (July 5, 2010) -- Researchers conducting a neighborhood-scaled exploratory study that tested the association between the food environment, the built environment and women's body mass index have found that women with homes closer to a supermarket, relative to a convenience store, had lower BMIs, and that the greater the number of restaurants within a five minute walk of a woman's home, the higher her BMI. ... > full story
Reprogrammed human blood cells show promise for disease research (July 5, 2010) -- Cells from frozen human blood samples can be reprogrammed to an embryonic stem-cell-like state, according to new research. These cells can be multiplied and used to study the genetic and molecular mechanisms of blood disorders and other diseases. The breakthrough described here allows for study of cells from frozen blood samples already stored at blood banks -- even from deceased patients. ... > full story
Air pollution doesn't increase risk of preeclampsia, early delivery, study finds (July 5, 2010) -- While pregnant women may worry about the effects of air pollution on their health and that of their developing child, exposure to carbon monoxide and fine particles in the air during pregnancy does not appear to increase the risk of preterm delivery or preeclampsia -- a serious condition that arises only during pregnancy -- according to results of a new study. ... > full story
Terrorist de-radicalization shows promise, comprehensive study finds (July 5, 2010) -- Prison programs to de-radicalize terrorists show promise, if well-run, according to a new report. It concludes that programs in Saudi-Arabia, Singapore, Indonesia and elsewhere "can make a difference." The researchers say their work could have policy implications for detainees at Guantanamo Bay, Afghanistan and Iraq. ... > full story
Muscular problems in children with neonatal diabetes are neurological, study finds (July 4, 2010) -- The muscle weakness and coordination problems sometimes seen in patients with neonatal diabetes -- a rare, inherited form of diabetes -- are caused by problems in the brain rather than the muscles, according to new research. The findings could pave the way for the development of improved treatments for the disease. ... > full story
Memory problems not the only predictor of later mild cognitive impairment (July 4, 2010) -- Researchers have found that lower, though not necessarily impaired, performance on tests measuring story learning or retention and processing speed in motor tasks dependent on visual control, as well as symptoms of depression, predicted subsequent cognitive decline in a normal population. ... > full story
Report examines whether statins prevent death in high-risk individuals without heart disease (July 4, 2010) -- A meta-analysis of previously published studies finds no evidence that statins are associated with a reduced risk of death among individuals at risk for but with no history of cardiovascular disease, according to a new study. ... > full story
How loss of key protein promotes aggressive form of leukemia (July 4, 2010) -- New research illuminates in fine detail one of the genetic paths that leads to a particularly aggressive form of leukemia. A team discovered a new tumor-suppressing function of p53, distinct, for instance, from apoptosis, and somewhat related to senescence. They showed that it has the ability to reinforce cell-fate and differentiation programs. In AML, p53 loss leads to cancer by disabling this reinforcement. ... > full story
Bicycling, brisk walking help women control weight; Researchers call for more bike-friendly environments to combat obesity (July 4, 2010) -- Premenopausal women who make even small increases in the amount of time they spend bicycling or walking briskly every day decrease their risk of gaining weight, according to a new study. ... > full story
Childhood malnutrition could weaken brain function in elderly (July 3, 2010) -- Malnutrition early in life appears to diminish brain function in older adulthood, according to a new study that has implications for many poor, developing nations. ... > full story
Scientists uncover novel role for DNA repair protein linked to cancer (July 3, 2010) -- Researchers report that DNA polymerase theta, or PolQ, promotes an inaccurate repair process, which can ultimately cause mutations, cell death or cancer. ... > full story
Subtle mutations in immune gene may increase risk for asthma (July 3, 2010) -- A gene that encodes a protein responsible for determining whether certain immune cells live or die shows subtle differences in some people with asthma, researchers report. ... > full story
Cellular and molecular events that restrict HIV transmission identified (July 3, 2010) -- Researchers have identified two molecules that when activated by drugs, can inhibit a number of specific aspects of HIV transmission. These findings may lead to therapies that target mucosal HIV transmission. ... > full story
Looking back key to moving forward: Counterfactual reflection is critical to institutional prosperity, study finds (July 3, 2010) -- Despite modest economic gains, gloomy unemployment numbers and low workplace morale still loom large within corporate America. ... > full story
New drug restores hearing after noise-induced hearing loss in rats (July 2, 2010) -- Researchers from New Zealand have discovered that a potent new drug restores hearing after noise-induced hearing loss in rats. The landmark discovery found that injection of an agent called 'ADAC' activates adenosine receptors in cochlear tissues, resulting in recovery of hearing function. The finding paves the way for effective non-surgical therapies to restore hearing loss after noise-induced injury. ... > full story
Discovery of a hepatitis C-related virus in bats may reduce outbreaks in humans (July 2, 2010) -- Viral hepatitis affects more than 500 million people worldwide and while vaccines are available for hepatitis A and B, this is not the case for hepatitis C, which affects as much as two percent of the population in the US. Now, scientists are reporting discovery of a virus related to hepatitis C in Asian bats, which may provide insights into the origins of the hepatitis C virus. ... > full story
High fructose diet may contribute to high blood pressure, study finds (July 2, 2010) -- People who eat a diet high in fructose, in the form of added sugar, are at increased risk of developing high blood pressure, or hypertension, according to a new study. The results suggest that cutting back on foods and beverages containing a lot of fructose (sugar) might decrease one's risk of developing hypertension. ... > full story
Stroke complications may subtract additional two years of healthy life (July 2, 2010) -- Stroke complications may deprive patients of about two years of healthy life, in addition to three years of healthy life lost due to the stroke, according to a South Korean study. A combined measure of potential life years and function lost can impact public health decisions, researchers said. However, it's unclear if the findings can be applied to other populations. ... > full story
Planned home births associated with tripling of neonatal mortality rate vs. planned hospital births (July 2, 2010) -- In a new study, researchers report that less medical intervention, characteristic of planned home births, is associated with a tripling of the neonatal mortality rate compared to planned hospital deliveries. Planned home births were characterized by a greater proportion of deaths attributed to respiratory distress and failed resuscitation. ... > full story
UVA radiation damages DNA in human melanocyte skin cells and can lead to melanoma (July 2, 2010) -- A new study has found that UVA radiation damages the DNA in human melanocyte cells, causing mutations that can lead to melanoma. Melanocytes, which contain a substance called melanin that darkens the skin to protect it from the ultraviolet rays of the sun, are more vulnerable to UVA radiation than normal skin cells because they are unable to repair themselves as efficiently. ... > full story
Overweight women undertaking ART twice as likely to miscarry as their slimmer counterparts, study finds (July 2, 2010) -- Being overweight leads to a greater risk of miscarriage for patients undergoing assisted reproductive technology, according to a new study. ... > full story
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