Friday, June 19, 2009

ScienceDaily: Latest Science News

ScienceDaily: Latest Science News


First Image Of Memories Being Made

Posted: 19 Jun 2009 11:00 AM PDT

The ability to learn and to establish new memories is essential to our daily existence and identity; enabling us to navigate through the world. A new study has captured an image for the first time of a mechanism, specifically protein translation, which underlies long-term memory formation.

Genes Edited In Human Stem Cells

Posted: 19 Jun 2009 11:00 AM PDT

Researchers have successfully edited the genome of human- induced pluripotent stem cells, making possible the future development of patient-specific stem cell therapies. They altered a gene responsible for causing the rare blood disease paroxysmal nocturnal hemoglobinuria, or PNH, establishing for the first time a useful system to learn more about the disease.

Caribbean Coral Reefs Flattened

Posted: 19 Jun 2009 11:00 AM PDT

Coral reefs throughout the Caribbean have been comprehensively "flattened" over the last 40 years, according to a disturbing new study.

Opioid-induced Hibernation Protects Against Stroke In Rats

Posted: 19 Jun 2009 11:00 AM PDT

Using an opioid drug to induce a hibernatory state in rats reduces the damage caused by an artificial stroke. Researchers have shown that those animals put into the chemical slumber suffered less behavioral dysfunctions after a period of cerebral artery blockage than control rats.

Using Math To Take The Lag Out Of Jet Lag

Posted: 19 Jun 2009 11:00 AM PDT

Researchers have developed a software program that prescribes a regimen for avoiding jet lag using timed light exposure.

How We Recognize What Is True And What Is False

Posted: 19 Jun 2009 11:00 AM PDT

A recent neuroimaging study reveals that the ability to distinguish true from false in our daily lives involves two distinct processes.

Sudden Collapse In Ancient Biodiversity: Was Global Warming The Culprit?

Posted: 19 Jun 2009 08:00 AM PDT

Scientists have unearthed striking evidence for a sudden ancient collapse in plant biodiversity. A trove of 200 million-year-old fossil leaves collected in East Greenland tells the story, carrying its message across time to us today.

Gene Inhibition May Help Normalize Type 2 Diabetes

Posted: 19 Jun 2009 08:00 AM PDT

In research that could lead to new approaches for the treatment of type 2 diabetes, scientists have found that suppressing a liver enzyme that induces glucose production helped diminish the symptoms of the disease in a rat model -- reducing blood glucose concentrations, decreasing rates of glucose production in the liver, and improving insulin sensitivity.  Decreasing expression of the gene, Sirtuin 1, also lowered total cholesterol levels.

Advance In Solving Mysterious Machine-workers' Disease

Posted: 19 Jun 2009 08:00 AM PDT

Scientists are reporting a long-awaited advance toward making the workplace safer for more than one million machinists in the United States who may be exposed to disease-causing bacteria in contaminated metalworking fluids. Those fluids become airborne during machining of metal parts. 

Vaccinating Children May Be Effective At Helping Control Spread Of Influenza

Posted: 19 Jun 2009 08:00 AM PDT

Targeting children may be an effective use of limited supplies of flu vaccine, according to new research. The study suggests that, used to support other control measures, this could help control the spread of pandemics such as the current swine flu.

Most Efficient And Stable Source Of Pure White Light Ever Achieved

Posted: 19 Jun 2009 08:00 AM PDT

Researchers are reporting the first use of a fundamentally new approach in the quest to snare the Holy Grail of the lighting industry: An LED (light-emitting diode) -- those ultra-efficient, long-lived light sources -- that emits pure white light. The new approach yielded what the scientists describe as the most efficient and stable source of pure white light ever achieved.

Naps With Rapid Eye Movement Sleep Increase Receptiveness To Positive Emotion

Posted: 19 Jun 2009 08:00 AM PDT

Naps with rapid eye movement sleep refresh the brain's empathetic sensitivity for evaluating human emotions by decreasing a negative bias and amplifying recognition of positive emotions, according to new research.

Size Did Matter: Evidence Of Giant Sperm Found In Microfossils

Posted: 19 Jun 2009 05:00 AM PDT

The mystery of giant sperm present in some living animal groups today has now taken on a new dimension -- in one group of micro-crustaceans new evidence shows that it is a feature at least 100 million years old.

Improved Method Developed To Test Carcinogen Risk

Posted: 19 Jun 2009 05:00 AM PDT

Researchers recently completed the largest animal study ever done in the field of toxicology, and the findings challenge some basic concepts about how to determine what level of a cancer-causing compound can be considered safe.

Strong Freestanding Nanoparticle Films Created Without Fillers

Posted: 19 Jun 2009 05:00 AM PDT

Nanoparticle films are no longer a delicate matter: Physicists have now found a way to make them strong enough so they don't disintegrate at the slightest touch.

Innovative Surgical Technique Gives Hope To Patients Suffering From Refractory Epilepsy

Posted: 19 Jun 2009 05:00 AM PDT

Clinicians have perfected an operation, which was previously considered too dangerous, to control refractory insular epilepsy, using an innovative microsurgery technique. According to a recent study, the new surgical technique is both safe and beneficial for patients.

Computers Can Boost Literacy

Posted: 19 Jun 2009 05:00 AM PDT

Computers do not spell the demise of literacy -- in fact, they may help to create one of the most literate and engaged generations the world has seen.

Local Food Environments Can Lead To Obesity

Posted: 19 Jun 2009 05:00 AM PDT

Living in an area with more fast food outlets and convenience stores than supermarkets and grocers has been associated with obesity in a Canadian study. Researchers have shown that your local food environment can affect your weight.

Polar Bear And Walrus Populations In Trouble, Stock Assessment Report Suggests

Posted: 19 Jun 2009 02:00 AM PDT

The U.S. Fish and Wildlife Service has released reports documenting the status of polar bears and Pacific walrus in Alaska. The reports confirm that polar bears in Alaska are declining and that Pacific walrus are under threat. Both species are imperiled due to the loss of their sea-ice habitat due to global warming, oil and gas development, and unsustainable harvest.

Muscular Dystrophy: New Drug Promises Benefit Without Risk Of Infection

Posted: 19 Jun 2009 02:00 AM PDT

A new drug being studied for the treatment of muscle degenerating diseases has shown promising results. According to a study, Debio 025 is as effective as current drugs but, crucially, does not cause unwanted immunosuppressive effects.

Discovery Of Facial Malformation Gene

Posted: 19 Jun 2009 02:00 AM PDT

The first specific genetic mutation which can cause a potentially serious facial disfigurement has been identified by researchers at Oxford University. The finding offers the promise of improved genetic counseling for parents at risk.

Hormone Therapy Plus Physical Activity Reduce Belly Fat, Body Fat Percentage After Menopause

Posted: 19 Jun 2009 02:00 AM PDT

Older women who take hormone therapy to relieve menopausal symptoms may get the added benefit of reduced body fat if they are physically active, according to a new study.

Astronomer Champions The Study Of Solar Eclipses In The Modern Era

Posted: 19 Jun 2009 02:00 AM PDT

Championing the modern-day use of solar eclipses to solve a set of modern problems is the goal of a review article written by Jay Pasachoff, visiting associate at the California Institute of Technology and Field Memorial Professor of Astronomy at Williams College. The review is the cover story of the June 11 issue of Nature, as part of its coverage of the International Year of Astronomy.

Stable Marriage Is Linked With Better Sleep In Women

Posted: 19 Jun 2009 02:00 AM PDT

Being stably married or gaining a partner is associated with better sleep in women than being unmarried or losing a partner, according to new research.

Lunar Reconnaissance Orbiter: NASA Returns To The Moon With First Lunar Launch In A Decade

Posted: 18 Jun 2009 11:00 PM PDT

NASA's Lunar Reconnaissance Orbiter has successfully launched aboard an Atlas V rocket from Cape Canaveral Air Force Station in Florida. The satellite will relay more information about the lunar environment than any other previous mission to the moon.

Specific Genetic Cause Of Fetal Alcohol-related Developmental Disorders Found

Posted: 18 Jun 2009 11:00 PM PDT

Alcohol consumption by pregnant women hinders brain development in their children by interfering with the genetic processes that control thyroid hormone levels in the fetal brain, a new animal study found.

NASA Successfully Launches Lunar Impactor

Posted: 18 Jun 2009 11:00 PM PDT

NASA successfully launched the Lunar Crater Observation and Sensing Satellite, or LCROSS, on a mission to search for water ice in a permanently shadowed crater at the moon's south pole. The satellite lifted off on an Atlas V rocket from Cape Canaveral Air Force Station, Fla., with a companion mission, the Lunar Reconnaissance Orbiter, or LRO.

Donor Stem Cell Transplantation Associated With Survival Benefit For Patients With Leukemia

Posted: 18 Jun 2009 11:00 PM PDT

An analysis of previous studies indicates that allogeneic stem cell transplantation (SCT -- stem cells from a compatible donor) is associated with significant overall and relapse-free survival benefit among adult patients with intermediate- and poor-risk but not good-risk acute myeloid leukemia in first complete remission, compared with nonallogeneic SCT therapies.

Natural Computing And Synthetic Biology Techniques Advanced For Treating Diseases

Posted: 18 Jun 2009 11:00 PM PDT

Researchers have designed a biomolecular automaton and several genetic circuits with potential future applications in the field of vanguard medicine. Depending on how it is programmed, the molecular automaton detects DNA or RNA signals in vitro. In the future, though, provided it passes all the experimental tests, it will be able to operate inside the human body.

Parental Presence At Bedtime May Result In Sleep Difficulties

Posted: 18 Jun 2009 11:00 PM PDT

Parental presence at bedtimes appears to have a greater negative impact on infant sleep than actual co-sleeping, according to new research.

Hunters Are Depleting Lion And Cougar Populations, Study Finds

Posted: 18 Jun 2009 08:00 PM PDT

Sport hunters are depleting lion and cougar populations as managers respond to demands to control predators that threaten livestock and humans, according to a new study.

Fibromyalgia Patients Show Decreases In Gray Matter Intensity

Posted: 18 Jun 2009 08:00 PM PDT

Previous studies have shown that fibromyalgia is associated with reductions in gray matter in parts of the brain, but the exact cause is not known. Using sophisticated brain imaging techniques, researchers have found that alterations in levels of the neurotransmitter dopamine might be responsible for gray matter reductions.

Scientist Finds Plumber's Wonderland On Graphene

Posted: 18 Jun 2009 08:00 PM PDT

Engineers have demonstrated the formation of interconnected carbon nanostructures on graphene substrate in a simple assembly process that involves heating few-layer graphene sheets to sublimation using electric current that may eventually lead to a new paradigm for building integrated carbon-based devices.

Study May Redefine How A Chronic Auto-immune Disease Is Diagnosed

Posted: 18 Jun 2009 08:00 PM PDT

New research may redefine how chronic inflammatory demyelinating polyneuropathy is diagnosed. The study may help doctors more effectively diagnose and treat CIDP.

'Motion-frozen' Technology Meets High-definition PET: Helping Heart Patients

Posted: 18 Jun 2009 08:00 PM PDT

Combining high-definition positron emission tomography (PET) and "motion-frozen" technology provides enhanced cardiac images.

Income, Education, Important Factors In Heart Disease Risk

Posted: 18 Jun 2009 08:00 PM PDT

Doctors who ignore the socioeconomic status of patients when evaluating their risk for heart disease are missing a crucial element that might result in inadequate treatment, according to a new study.

Mammoths Survived In Britain Until 14,000 Years Ago, New Discovery Suggests

Posted: 18 Jun 2009 05:00 PM PDT

Research finally proves that bones found in Shropshire, England, provide the most geologically recent evidence of woolly mammoths in Northwestern Europe. Analysis of both the bones and the surrounding environment suggests that some mammoths remained part of British wildlife long after they are conventionally believed to have become extinct.

Reproductive Health Effects Found From Low Doses Of Bisphenol-A

Posted: 18 Jun 2009 05:00 PM PDT

New research shows significant reproductive health effects in rats that have been exposed to bisphenol-A at levels equivalent to or below the dose that has been thought not to produce any adverse effects.

Some Video Games Can Make Children Kinder And More Likely To Help

Posted: 18 Jun 2009 05:00 PM PDT

Some video games can make children kinder and more likely to help -- not hurt -- other people.

Drugs Against Winter Vomiting Disease One Step Closer

Posted: 18 Jun 2009 05:00 PM PDT

The virus that causes winter vomiting disease invades cells by attaching to particular sugar molecules on the surface of the cells, according to new research in Sweden. This result may be an important step in the development of a drug against the regular hospital-based epidemics caused by the virus.

Arctic Contamination: Mercury In Mackenzie River Delta Dramatically Higher Than Previously Believed

Posted: 18 Jun 2009 05:00 PM PDT

Researchers conducting a water study in the Mackenzie River Delta have found a dramatically higher delivery of mercury from the Mackenzie River to the Arctic Ocean than determined in previous studies.

Stroke Survivors Report Loss Of Sexual Desire, Blurred Gender Roles, Anger And Fatigue

Posted: 18 Jun 2009 05:00 PM PDT

Suffering a stroke can have a profound effect on relationships and lead to significant changes in how couples relate to each other on a physical, psychological, social and emotional level.

Humans More Related To Orangutans Than Chimps, Study Suggests

Posted: 18 Jun 2009 02:00 PM PDT

New evidence underscores the theory of human origin that suggests humans most likely share a common ancestor with orangutans. The researchers reject as "problematic" the popular suggestion, based on DNA analysis, that humans are most closely related to chimpanzees, which they maintain is not supported by fossil evidence.

New Skin Cancer Patch: Possible Alternative To Surgery

Posted: 18 Jun 2009 02:00 PM PDT

A new study shows that a radioactive skin patch can safely and successfully treat basal cell carcinoma, one of the most common types of skin cancers.

'Implausible' Chemistry Produces Herbicidal Compound

Posted: 18 Jun 2009 02:00 PM PDT

A soil microbe that uses chemical warfare to fight off competitors employs an unusual chemical pathway in the manufacture of its arsenal, researchers report, making use of an enzyme that can do what no other enzyme is known to do: break a non-activated carbon-carbon bond in a single step.

Key Gene In Deadly Inflammatory Breast Cancer Identified

Posted: 18 Jun 2009 02:00 PM PDT

Aggressive, deadly and often misdiagnosed, inflammatory breast cancer is the most lethal form of primary breast cancer, often striking women in their prime and causing death within 18 to 24 months. Now, scientists have identified a key gene -- eIF4G1 -- that is overexpressed in the majority of cases of IBC, allowing cells to form highly mobile clusters that are responsible for the rapid metastasis that makes IBC such an effective killer.

3D Printing For New Tissues And Organs

Posted: 18 Jun 2009 02:00 PM PDT

A more effective way to build plastic scaffolds on which new tissues and even whole organs might be grown in the laboratory is being developed.

Test That Found Widespread Unconscious Racial Bias Validated

Posted: 18 Jun 2009 02:00 PM PDT

A new study validates the controversial finding that the Implicit Association Test indicated that about 70 percent of those people who took a version of the test that measures racial attitudes have unconscious preference for white people compared to blacks. This compared with figures general under 20 percent for self-reported measures of race bias.

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