ScienceDaily Health Headlines -- for Tuesday, November 11, 2008


Bacteria In Mouth Help Make Certain Foods Tasty (November 11, 2008) -- Scientists in Switzerland are reporting that bacteria in the human mouth play a role in creating the distinctive flavors of certain foods. They found that these bacteria actually produce food odors from odorless components of food, allowing people to fully savor fruits and vegetables. ... > full story

Cancer Drugs May Build And Not Tear Down Blood Vessels (November 11, 2008) -- Scientists have thought that one way to foil a tumor from generating blood vessels to feed its growth -- a process called angiogenesis -- was by creating drugs aimed at stopping a key vessel growth-promoting protein. But now the opposite seems to be true. ... > full story

Deep Sea Expedition Sets Sail (November 11, 2008) -- Researchers are embarking upon an extreme adventure, plunging deep into the sea to study hydrothermal vents on the ocean floor. They'll share the experience with 20,000-plus school children through interactive sessions. ... > full story

Vitamins E And C Supplements Not Effective For Prevention Of Cardiovascular Disease In Men (November 11, 2008) -- Neither vitamin E nor vitamin C supplements reduced the risk of major cardiovascular events in a large, long-term study of male physicians, according to a new study. ... > full story

1918 Spanish Flu Records Could Hold The Key To Solving Future Pandemics (November 11, 2008) -- Ninety years after Australian scientists began their race to stop the spread of Spanish flu in Australia, University of Melbourne researchers are hoping records from the 1918 epidemic may hold the key to preventing future deadly pandemic outbreaks. ... > full story

Scientists Map Molecular Regulation Of Fat-cell Genetics (November 11, 2008) -- A research team has used state-of-the-art genetic technology to map thousands of positions where a molecular "master regulator" of fat-cell biology is nestled in DNA to control genes in these cells. ... > full story

Important Steps Towards Development Of Human Vaccine Against Malaria (November 11, 2008) -- Every day 2000 children die from malaria in Africa alone. The infection is transmitted from human to human by biting mosquitoes and remains one of the world's most devastating diseases. Despite many years of effort a vaccine is still not available but is urgently needed. ... > full story

Eliminating Soda From School Diets Does Not Affect Overall Consumption (November 11, 2008) -- With childhood obesity increasing, school administrators and public health officials are reducing availability of sugar-sweetened beverages in schools. In a new study in the Journal of Nutrition Education and Behavior, researchers found that reduction or elimination of sugar-sweetened beverages from school menus has little effect on total consumption by adolescents. ... > full story

Quintet Of Proteins Forms New, Early-warning Blood Test Before Heart Attack Strikes (November 10, 2008) -- Biochemists have identified a mixed bag of five key proteins out of thousands secreted into blood draining from the heart's blood vessels that may together or in certain quantities form the basis of a far more accurate early warning test than currently in use of impending heart attack in people with severely reduced blood flow, or ischemia. ... > full story

Impact Of Insulin Pump Under Study (November 10, 2008) -- Using an insulin pump to manage diabetes is more convenient than managing the disease with daily insulin injections. That much, physicians already know. But the pump's impact on the lives of diabetics and their primary caregivers is an important question that hasn't been answered yet, researchers say. ... > full story

Can Vitamins And Minerals Prevent Hearing Loss? (November 10, 2008) -- Researchers and physicians at the University of Michigan Kresge Hearing Research Institute are hoping to reverse a rising trend of noise-induced hearing loss with a cocktail of vitamins and the mineral magnesium that has shown promise as a possible way to prevent hearing loss caused by loud noises. ... > full story

Bone Marrow Transplant Can Cure Sickle Cell Disease, Children's Hospital Study Suggests (November 10, 2008) -- A unique approach to bone marrow transplantation has proven to be the only safe and effective cure for sickle cell disease, according to a new study. ... > full story

Engineered Killer T Cell Recognizes HIV-1's Lethal Molecular Disguises (November 10, 2008) -- Researchers have engineered T cells able to recognize HIV-1 strains that have evaded the immune system. The findings have important implications for developing new treatments for HIV, especially for patients with chronic infection who fail to respond to antiretroviral regimens. ... > full story

Seven Years Without A Nose (November 10, 2008) -- Patients whose nose has been destroyed by a tumor or injury carry a severe psychological and social burden. Esthetic reconstruction ranges among the most challenging tasks in plastic surgery. Researchers have presented the different options for nasal reconstruction surgery. ... > full story

Untangling DNA Regulation: Biologists Theorize Role For DNA Packaging In Stem Cell Development (November 10, 2008) -- Biologists have discovered that the organization of DNA's packing material plays a critical role in directing stem cells to become different types of adult cells. ... > full story

Neuroimaging Of Brain Shows Who Spoke To A Person And What Was Said (November 10, 2008) -- Scientists have developed a method to look into the brain of a person and read out who has spoken to him or her and what was said. With the help of neuroimaging and data mining techniques the researchers mapped the brain activity associated with the recognition of speech sounds and voices. In their Science article "Who" is Saying "What"? Brain-Based Decoding of Human Voice and Speech the four authors demonstrate that speech sounds and voices can be identified by means of a unique 'neural fingerprint' in the listener's brain. ... > full story

Multiple Sclerosis Research Charges Ahead With New Mouse Model Of Disease (November 10, 2008) -- A new study highlights the role of a charge-switching enzyme in nervous system deficits characteristic of multiple sclerosis and other related neurological illness. Too much of a charge-switching enzyme causes symptoms of multiple sclerosis and related disorders in mouse models. ... > full story

New Imaging Technology Accurately Identifies A Broad Spectrum Of Liver Disease (November 10, 2008) -- New imaging technology can identify liver fibrosis with high accuracy and help eliminate the need for liver biopsies. Liver fibrosis is a common condition that can lead to incurable cirrhosis if not treated in time. ... > full story

Research On Breathing Disorders And Congenital Heart Defects (November 10, 2008) -- New optical techniques have been developed for visualizing the invisible processes at work in several human diseases. ... > full story

Age Is Not A Key Factor In Cancer Survival, But Clinical Trials Exclude Older Patients (November 10, 2008) -- Age is not an independent factor in cancer survival rates and should not influence decisions about how to treat older patients, according to a new study. ... > full story

Researchers Discover New Risk Factor For Cardiovascular Disease, And A Way To Control It (November 10, 2008) -- Scientists have discovered that having high levels of particular protein puts patients at increased risk of developing cardiovascular disease. The results of the study were so conclusive that the clinical trial had to be stopped before its scheduled completion date. ... > full story

Nanoparticles Research Aids Drug Development (November 10, 2008) -- Scientists have developed a new technology which can dramatically improve the effectiveness of antibacterial treatments. ... > full story

Half-broken Gene Is Enough To Cause Cancer (November 10, 2008) -- Tumor suppressor genes do not necessarily require both alleles to be knocked out before disease phenotypes are expressed. Only one allele of SMAD4 has to be damaged to put a person at risk of pancreatic and colorectal cancer. ... > full story

MP3 Headphones Interfere With Implantable Defibrillators, Pacemakers, Study Suggests (November 10, 2008) -- MP3 player headphones can cause potentially dangerous interactions with pacemakers and implantable defibrillators. For safe use, the headphones must be at least 1.2 inches (3 cm) from the implanted devices. Unrelated research did not find adverse reactions to pacemakers and defibrillators from iPods, Bluetooth headsets, iPhones, electric blankets, hand-held airport metal detectors or pills swallowed to perform video endoscopy. ... > full story

Computer Model Can Predict Human Behavior And Learning (November 10, 2008) -- A new computer model can predict how people will complete a controlled task and how the knowledge needed to complete that task develops over time. ... > full story

Simple Brain Mechanisms Explain Arbitrary Human Visual Decisions (November 10, 2008) -- Scientists report that a simple decision-making task does not involve the frontal lobes, where many of the higher aspects of human cognition, including self-awareness, are thought to originate. Instead, the regions that decide are the same brain regions that receive stimuli relevant to the decision and control the body's response to it. ... > full story

Flu Shots May Cut Risk Of Blood Clots Forming In Veins (November 10, 2008) -- Flu shots may reduce the risk of blood clots forming in veins by 26 percent. Flu shots may be more protective before age 52. ... > full story

Intelligent Walker Designed To Assist The Elderly And People Undergoing Medical Rehabilitation (November 10, 2008) -- Researchers have designed an intelligent walker (i-Walker) that goes a step beyond conventional walkers as it can communicate with the user, think for itself and react to the environment. The device can understand a set of voice commands and can be activated by means of simple verbal instructions given by the user (e.g., "take me to the kitchen"). To do this, it includes elements for independent movement and a personalized intelligent software agent. ... > full story

New Research Finds Markers For Esophageal Cancer Before It Develops (November 10, 2008) -- Researchers have identified genetic proteins, also known as biomarkers, capable of distinguishing changes at the microscopic level that can signal a precancerous condition in the esophagus. These markers may help identify patients who are likely to progress to esophageal cancer. ... > full story

Racial Disparities Increasing For Cancers Unrelated To Smoking, Study Finds (November 10, 2008) -- A new American Cancer Society study finds that recent progress in closing the gap in overall cancer mortality between African-Americans and whites may be due primarily to smoking-related cancers, and that cancer mortality differences related to screening and treatment may still be increasing. ... > full story

Harnessing Nature's Diagnostic Tools For Disease Prevention (November 10, 2008) -- The earlier cancer is diagnosed, the better the chance of effecting a cure. A revolutionary new hybrid technology offers the possibility of detecting this and other diseases right at inception. ... > full story

XDR-TB: Deadlier And More Mysterious Than Ever (November 10, 2008) -- New research has found that extensively drug-resistant tuberculosis is increasingly common and more deadly than previously known. Extensively drug-resistant tuberculosis is a growing public health threat that is only just beginning to be understood by medical and public health officials. ... > full story

Mental Health Linked To Stillbirth And Newborn Deaths (November 10, 2008) -- Women with a history of serious mental illness are much more likely to have babies that are stillborn or die within the first month of life, new research reveals. ... > full story

Better Treatments For Inherited Form Of Colon Cancer? (November 10, 2008) -- Researchers believe they may be one step closer to understanding how certain forms of colon cancer develop. ... > full story

Diagnosis Of Pelvic Inflammatory Disease Predicts High Risk And Rate Of Further Infection In Teenagers (November 10, 2008) -- A study among Baltimore inner-city teenage girls treated for pelvic inflammatory disease shows they are highly vulnerable to subsequent sexually transmitted infections -- sometimes within a few weeks or months of their treatment. ... > full story

Transplant Experts Discuss Organ Trafficking (November 10, 2008) -- With the number of patients in need of organ transplants on the rise, an increasing number of patients are turning to unconventional sources for organs. Individuals are willing to donate their kidneys for financial incentive, particularly in developing countries where the poverty rate is high, resulting in numerous reports of human trafficking as a source of organs. ... > full story

Research Sheds Light On Key Trigger Of Embryonic Stem Cell Differentiation (November 10, 2008) -- Clusters of mouse embryonic stem cells called embryoid bodies more closely approximate true embryos in organization and structure than previously thought, according to researchers at the Stanford University School of Medicine. ... > full story

Long-term Benefits Of Morphine Treatment In Infants Confirmed In Rodent Study (November 10, 2008) -- Scientists have demonstrate that administration of preemptive morphine prior to a painful procedure in infancy blocks the long-term negative consequences of pain in adult rodents. These studies have serious implications for the way anesthetics and analgesics are administered to neonates prior to surgery. ... > full story

Genetic Study Provides New Insights Into Molecular Basis Of Language Development (November 9, 2008) -- Scientists have identified the first gene that is associated with a common childhood language disorder, known as specific language impairment (SLI). The gene -- CNTNAP2 -- has also been recently implicated in autism, and could represent a crucial genetic link between the two disorders. ... > full story

Smaller Mosquitoes Are More Likely To Be Infected With Viruses Causing Human Diseases (November 9, 2008) -- An entomologist says smaller mosquitoes are more likely to be infected with viruses that cause diseases in humans. ... > full story

Consumers Not Ready For Tailor-made Nutrition? (November 9, 2008) -- In the near future it will be possible to customize the food we eat to individual needs, based on the genetic profile of the individual. Researchers suggest that the consumer market is not yet ready for this so-called nutrigenomics. They conclude that many obstacles must be overcome before products based on nutrigenomics become a reality. ... > full story

Mitochondria Could Be Target For Therapeutic Strategy For Alzheimer's Disease Patients (November 9, 2008) -- A study in Nature Medicine describes the function and interaction of a critical molecule involved in cell death in Alzheimer's disease patients. These new findings reveal that blocking this molecule, called Cyclophilin D, and development of surrounding mitochondrial targets may be viable therapeutic strategies for the prevention and treatment of Alzheimer's disease, according to Shi Du Yan, Ph.D., at Columbia University Medical Center, who led the multi-center research. ... > full story

HPV Virus Helps Cervical And Head And Neck Cancers Resist Treatment And Grow And Spread (November 9, 2008) -- The human papillomavirus allows infected cervical and head and neck cancer cells to maintain internal molecular conditions that make the cancers resistant to therapy and more likely to grow and spread, resulting in a poor prognosis for patients. ... > full story

How Plant Cells Synthesize Pharmaceutical Compounds (November 9, 2008) -- A Finnish researcher's work on two plants -- tobacco and Egyptian henbane -- is yielding new information about the functions of genes involved with the biosynthesis of plant secondary metabolites. The results can be used in developing production of valuable pharmaceuticals in plant cell cultures. ... > full story

Forgotten, But Not Gone: Leprosy Still Present In The US (November 9, 2008) -- Long believed to be a disease of biblical times, leprosy, also known as Hansen's disease, continues to be seen in the United States. ... > full story

Playing A Game Shows How Personalities Evolved (November 9, 2008) -- Why do some of us always do the right thing while others only seem to be out for themselves? New research offers a new explanation as to why such a wide range of personality traits has evolved in humans and other social species. ... > full story

Friendly Bacteria Reduce Hospital Infections (November 9, 2008) -- A probiotic bacterium, Lactobacillus plantarum 299, has been used to out-compete the dangerous bacteria that cause respiratory illness in ventilated patients. Research published in BioMed Central's open access journal Critical Care describes how applying a bacterial solution in place of normal antiseptics is effective in preventing the most common cause of ventilator-associated pneumonia. ... > full story

New Role For Critical DNA Repair Molecule In Immune System (November 9, 2008) -- The human immune system is a brilliantly adaptable weapon against foreign invaders. But it all depends on the work of specialized cells called lymphocytes that have made a risky evolutionary gambit to mutate their own DNA. New research published in Nature shows for the first time that a molecule devoted to DNA repair plays a broader role in this genetic reshuffling -- called recombination -- than scientists had thought. ... > full story


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