Everything You Need to Know About Health: ScienceDaily Health Headlines -- for Saturday, November 29, 2008

ScienceDaily Health Headlines

for Saturday, November 29, 2008

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Mouse Model Of Prion Disease Mimics Diverse Symptoms Of Human Disorder (November 28, 2008) -- A comprehensive mouse model of inherited prion disease exhibits cognitive, motor and neurophysiological deficits that bear a striking resemblance to the symptoms experienced by patients with the human version of "mad cow disease," Creutzfeldt-Jakob disease. The research, published in the journal Neuron, provides exciting insight into the mechanism of disease and may lead to the development of new therapeutic strategies for this devastating neurodegenerative disorder. ... > full story

Drink Brewed Tea To Avoid Tooth Erosion, Study Suggests (November 28, 2008) -- Researchers compared green and black tea to soda and orange juice in terms of their short- and long-term erosive effect on human teeth. The study found that the erosive effect of tea was similar to that of water, which has no erosive effect. ... > full story

Resistance to TB Vaccine May Be Uncommon, Protects Against Nine Strains in Mice (November 28, 2008) -- A new study shows that the current tuberculosis vaccine induces protective immunity against nine strains of the bacteria in mice indicating that strain-specific resistance may be uncommon. ... > full story

Expressing Emotions In E-mail So As Not To Be Misinterpreted (November 28, 2008) -- How do people use emoticons, subject lines, and signatures to define how they want to be interpreted in email? The authors find that "a shift to email interaction requires a new set of interactional skills to be developed." Unlike face-to-face conversations, email interactions leave out tone of voice, body-language and context, which can lead to misunderstandings. ... > full story

Route To Obesity Passes Through Tongue (November 28, 2008) -- Obesity gradually numbs the taste sensation of rats to sweet foods and drives them to consume larger and ever-sweeter meals, according to neuroscientists. New findings could uncover a critical link between taste and body weight, and reveal how flab hooks the brain on sugary food. ... > full story

Master Gene Plays Key Role In Blood Sugar Levels (November 28, 2008) -- When mice that lack steroid receptor-2, a master regulator gene called a coactivator, fast for a day, their blood sugar levels plummet. If they go another day without food, they will die. The severity of the hypoglycemia was unexpected, according to an article in Science. ... > full story

Estrogen Therapy Could Be Dangerous For Women With Existing Heart Risk (November 28, 2008) -- Hormone therapy could accentuate certain pre-existing heart disease risk factors and a heart health evaluation should become the norm when considering estrogen replacement, new research suggests. ... > full story

Explanation For 'Face Blindness' Offered (November 28, 2008) -- For the first time, scientists have been able to map the disruption in neural circuitry of people suffering from congenital prosopagnosia, sometimes known as face blindness, and have been able to offer a biological explanation for this intriguing disorder. Currently thought to affect roughly two percent of the population, congenital prosopagnosia manifests as the lifelong failure to recognize faces in the absence of obvious neurological damage, and in individuals with intact vision and intelligence. ... > full story

Experimental TB Drug Explodes Bacteria From The Inside Out (November 28, 2008) -- Biochemists have discovered how an experimental drug unleashes its destructive force inside the bacteria that cause tuberculosis. The finding could help scientists develop ways to treat dormant TB infections, and suggests a strategy for drug development against other bacteria as well. ... > full story

Inhaled Corticosteroids Raise Pneumonia Risk For Lung Disease Sufferers (November 28, 2008) -- Lung disease experts are calling for physicians to show much greater caution in prescribing inhaled corticosteroid drugs for people with chronic obstructive pulmonary disease after finding evidence that the widely used anti-inflammatory medications increase the risk of pneumonia by a full third. ... > full story

Protein Fibers Can Become Electrical Wiring (November 28, 2008) -- Researchers have succeeded in creating electrical wires consisting of protein fibers encased in plastic. The 10 nanometer thin fibers are self-organizing and compatible with biological systems. ... > full story

New Research Sheds Light On Fly Sleep Circuit (November 28, 2008) -- Researchers have identified a specific set of wake-promoting neurons in fruit flies that are analogous to cells in the much more complex sleep circuit in humans. The study demonstrates that in flies, as in mammals, the sleep circuit is intimately linked to the circadian clock and that the brain's strategies to govern sleep are evolutionarily ancient. ... > full story

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