ScienceDaily Health Headlines
for Thursday, July 22, 2010
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Muscular heart failure patients may have a better chance at survival, study suggests (July 22, 2010) -- Heart failure patients with more muscle have the potential to increase their length of life, new research has found. ... > full story
HIV vaccines may induce HIV antibodies in trial participants, can cause false-positive test result (July 22, 2010) -- During trials of preventive HIV vaccines, trial participants may develop HIV-related antibody responses that could lead to a positive HIV test by routine antibody detection methods (called vaccine-induced seropositivity/reactivity [VISP]), and the potential for false-positive test results and an incorrect HIV diagnosis, according to a new study. ... > full story
Video game processors help lower CT scan radiation (July 22, 2010) -- A new approach to processing X-ray data could lower by a factor of ten or more the amount of radiation patients receive during cone beam CT scans, researchers report. ... > full story
Marriage patterns drive fertility decline (July 22, 2010) -- Researchers have applied an evolutionary "use it or lose it" principle when studying past marriage patterns, to show that marriage can influence the evolution of age-patterns of fertility. ... > full story
Valproic acid shown to halt vision loss in patients with retinitis pigmentosa (July 22, 2010) -- Researchers have discovered a potential new therapeutic link between valproic acid and retinitis pigmentosa, which could have tremendous benefits for patients suffering from the disease. ... > full story
Studies gauge techniques for measuring breast density -- a predictor of cancer (July 22, 2010) -- Two new studies have tested three different methods for accurately measuring breast density -- the relative portion of tissue to fat in a woman's breasts and a strong indicator of breast cancer risk. ... > full story
First stages of tissue production in human embryonic stem cells isolated (July 21, 2010) -- Scientists have described a population of cells that mark the very first stage of differentiation of human embryonic stem cells as they enter a developmental pathway that leads to production of blood, heart muscle, blood vessels and bone. ... > full story
New genomics-based approach to understand origin of cancer subgroups (July 21, 2010) -- Scientists have long recognized that cancers may look the same under the microscope, but carry different mutations, respond differently to treatment and result in vastly different outcomes for patients. Now researchers have developed a new approach that uses genomic information from different species to understand the biology that drives the formation of these different cancer subtypes. ... > full story
Children of older women appear vulnerable to the effects of prenatal alcohol exposure (July 21, 2010) -- The presence and severity of Fetal Alcohol Spectrum Disorders are influenced by factors beyond alcohol consumption, such as maternal age. New findings have shown that the damaging effects of maternal binge drinking during pregnancy on attention are greater among children born to older drinking mothers. ... > full story
Engineered stem cells may limit heart attack damage, improve function (July 21, 2010) -- Implanting tiny plastic scaffolds seeded with genetically engineered stem cells reduced organ damage and led to better cardiac function after a heart attack, according to new research. ... > full story
Sepsis and septic shock more common than heart attacks or pulmonary blood clots after general surgery, study finds (July 21, 2010) -- Sepsis and septic shock appear to be more common than heart attacks or pulmonary blood clots among patients having general surgery, and the death rate for patients with septic shock is approximately 34 percent within 30 days of operation, according to a new study. ... > full story
Afraid of a broken heart? Feeling insecure in relationships may predispose people to later cardiovascular problems, says research (July 21, 2010) -- People who feel insecure about their attachments to others might be at higher risk for cardiovascular problems than those who feel secure in their relationships, according to a new study. ... > full story
Do cleaning products cause breast cancer? (July 21, 2010) -- Women who report greater use of cleaning products may be at higher breast cancer risk than those who say they use them sparingly. Researchers asked more than 1500 women about their cleaning product usage and found that women who reported using more air fresheners and products for mold and mildew control had a higher incidence of breast cancer. ... > full story
Trauma patients undergoing emergency operations may receive transfusions of their own blood (July 21, 2010) -- Transfusion with a trauma patient's own blood may offer a cost-effective alternative to transfusion with blood from another individual as a resuscitation method during surgery, according to a new study. ... > full story
Nasal zinc gels may be associated with loss of sense of smell, study finds (July 21, 2010) -- An evaluation of 25 patients and a review of reports of clinical, biological and experimental data suggest that over-the-counter, homeopathic nasal zinc therapies may be associated with a reduced sense of smell, according to a new study. ... > full story
Nanoparticles plus adult stem cells demolish plaque, study finds (July 21, 2010) -- A technique that combines nanotechnology with adult stem cells appears to destroy atherosclerotic plaque and rejuvenate the arteries, according to a new study. ... > full story
Natural substance NT-020 aids aging brains in rats, study finds (July 21, 2010) -- Researchers found that a combination of nutrients called NT-020 promoted adult neural stem cell proliferation in aged rats and boosted their memory and spatial navigation performance. They tested two groups of aged laboratory rats; one group received NT-020 and a control group did not. In the NT-020 treated group, neurogenesis increased and researchers concluded that the NT-020 treated group had fewer activated inflammatory brain cells and an increase in stem cells. ... > full story
Why does everything look gray when you feel blue? (July 21, 2010) -- Regardless of culture, language, era, or individual artist, the arts consistently depict depression using darkness. Scientific findings now lend empirical support to this representation of depression that everything looks gray when you feel blue. Researchers had previously shown that people with depression have difficulty detecting black-and-white contrast differences. ... > full story
Bone cells' branches sense stimulation, when to make new bone (July 21, 2010) -- Research of bone cells shows, for the first time, the part of the cells that sense mechanical stimulation and signal the release of bone-growth factors. ... > full story
Children have a negative impact on physical activity among individuals with heart disease, study finds (July 21, 2010) -- A study conducted at the Montreal Heart Institute has shown unexpectedly that living with children is linked to a reduction in physical activity. Carried out with 756 participants, the study assessed the impact of social networks on exercise, revealing that people with heart disease who live with children exercise less than those people who do not live with children. ... > full story
New way to target viruses could make antiviral drugs more effective (July 21, 2010) -- Scientists have developed a new way to target viruses which could increase the effectiveness of antiviral drugs. Instead of attacking the virus itself, the method developed at the University of Edinburgh alters the conditions which viruses need to survive and multiply. ... > full story
New genetic marker of ovarian cancer risk discovered (July 21, 2010) -- Researchers have identified a genetic marker that can help predict the risk of developing ovarian cancer, a hard to detect and often deadly form of cancer. ... > full story
Practice makes perfect? Consumers overestimate their ability to learn prior to purchase (July 21, 2010) -- Consumers give up on using products because they underestimate their learning abilities, according to a new study. ... > full story
Key pathway in end-stage prostate cancer tumor progression blocked (July 21, 2010) -- Researchers have found that blocking one of the enzymatic steps that allow a prostate tumor to produce androgens could be the key in halting a tumor's growth. ... > full story
No pain, no gain? Concrete thinking increases consumer confidence (July 21, 2010) -- The confidence you feel when making a choice might depend on whether you're thinking concretely or abstractly, according to a new study. ... > full story
Probiotics use in mothers limits eczema in their babies, study finds (July 21, 2010) -- Women who drank milk with a probiotic supplement during and after their pregnancy cut the incidence of eczema in their children by almost half compared to mothers who drank a placebo, researchers have shown. ... > full story
Scientists identify key molecular regulator of cardiac hypertrophy (July 21, 2010) -- Scientists have identified a key molecular regulator of cardiac hypertrophy (enlargement of the heart) that may provide a therapeutic target for a major risk factor of heart failure and early death. The researchers report in an upcoming edition of Nature Medicine that over-expression of the protein CIB1 (also called calmyrin) triggers biochemical processes that lead to cardiac hypertrophy. The study was posted online July 18 in advance of publication. ... > full story
Consumers love underdogs (July 21, 2010) -- Consumers strongly relate to brands that they perceive as underdogs, according to a new study. ... > full story
Toronto homeless report barriers to health care (July 21, 2010) -- A new study finds that 17 per cent of homeless people in Toronto -- one in six -- reported unmet health care needs. Women with dependent children had almost twice as much trouble getting access to health care as the general population of the city. ... > full story
Lack of insurance coverage remains obstacle to wider colorectal cancer screening with CT colonography (July 21, 2010) -- A recent questionnaire submitted to a group of patients at one of the nation's largest general hospitals suggests that a significant number of patients, who have previously refused colorectal cancer screening, are willing to undergo computed tomography colonography, but not willing to pay for the exam themselves when not covered by insurance, according to a study. ... > full story
HIV in people who use drugs: Need to focus on conditions of health delivery that create treatment interruptions (July 21, 2010) -- The Lancet series on HIV in people who use drugs reports that in order to improve access to antiretroviral therapy among injecting drug users, health providers must focus less on the individual patient's ability to adhere to treatment, and more on conditions of health delivery that create treatment interruptions. ... > full story
Childhood sexual abuse and social shaming linked to health issues later (July 21, 2010) -- Gay and bisexual men enrolled in a long-term study of HIV who reported sexual abuse and social shaming in childhood experience psychosocial health problems later in life that could put them at greater risk for HIV, researchers report. ... > full story
Prolonged mobile phone use may be linked to tinnitus (July 20, 2010) -- Regularly using a mobile phone for at least four years seems to be associated with a doubling in the risk of developing chronic tinnitus (persistent ringing/roaring/hissing in the ear), indicates a small study. ... > full story
Preterm births higher among overweight and obese mothers, study finds (July 20, 2010) -- Overweight and obese women are at greater risk of giving birth to a preterm baby compared with normal weight women, a new study finds. ... > full story
Data presentation and consumer confidence (July 20, 2010) -- Is it better to present data in percentages (80% of 70) or as a frequency (56 out of 70 times)? According to a new study, data presented in the frequency format leads to more accurate judgments. ... > full story
Healthy families, religious involvement buffer youth against risk factors related to drug abuse (July 20, 2010) -- American-Indian adolescents continue to have the highest rates of illicit drug use among all ethnic groups. Recent findings reveal that positive family relationships and religious affiliation can counteract risk factors -- including addicted family members, exposure to violence and deviant peers -- associated with drug use. ... > full story
Asthma and eczema sufferers have a lower risk of developing a cancer, study finds (July 20, 2010) -- Men who had a history of asthma or eczema generally had a lower risk of developing cancer, according to a new study. ... > full story
Obesity in early adulthood associated with increased risk of psoriatic arthritis (July 20, 2010) -- Among persons with psoriasis, those who reported being obese at age 18 had an increased risk of developing psoriatic arthritis, according to a report in the July 19 issue of Archives of Dermatology, one of the JAMA/Archives journals. ... > full story
Children's school performance tied to family 'type' (July 20, 2010) -- The way a family interacts can have more of an impact on a child's predicted school success than reading, writing or arithmetic, according to a new study. ... > full story
Widely used chemicals linked to ADHD in children (July 20, 2010) -- Researchers suggests a link between polyfluoroalkyl chemicals (PFCs), industrial compounds which are widely used in many consumer products, and attention deficit hyperactivity disorder in children. PFCs are highly stable compounds used in industrial and commercial products like stain-resistance coatings, food packaging, and fire-fighting foams. ... > full story
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