Tuesday, September 08, 2009

ScienceDaily: Latest Science News

ScienceDaily: Latest Science News


'Liposuction Leftovers' Easily Converted To Induced Pluripotent Stem Cells

Posted: 08 Sep 2009 08:00 AM PDT

Researchers have found that fat cells left over from liposuction can be easily coaxed into become induced pluripotent stem cells.

Brain Defect Implicated In Early Schizophrenia

Posted: 08 Sep 2009 08:00 AM PDT

In the first functional magnetic resonance imaging study of its kind, neurologists and psychiatrists have identified an area of the brain involved in the earliest stages of schizophrenia and related psychotic disorders. Activity in this specific region of the hippocampus may help predict the onset of the disease, offering opportunities for earlier diagnosis and for the development of drugs for schizophrenia prevention.

Bats Without Borders: World's Largest Bats Need International Protection

Posted: 08 Sep 2009 08:00 AM PDT

Scientists warn that the world's largest species of fruit bat, known as the "large flying fox," could be driven to extinction in Peninsular Malaysia at the current hunting rate allowed of around 22,000 every year.

Designing Probiotics That Ambush Gut Pathogens

Posted: 08 Sep 2009 08:00 AM PDT

Researchers in Australia are developing diversionary tactics to fool disease-causing bacteria in the gut. Many bacteria, including those responsible for major gut infections, such as cholera, produce toxins that damage human tissues when they bind to complex sugar receptors displayed on the surface of cells in the host's intestine.

Using Microbes For The Quick Clean Up Of Dirty Oil

Posted: 08 Sep 2009 08:00 AM PDT

Microbiologists have used mixed consortia of bacteria to break down and remove toxic compounds from crude oil and tar sands. These acidic compounds persist in the environment, and can take up to 10 years to break down. By using this microbial mixture, complete degradation of specific compounds was achieved in only a few days.

Cities Less Dangerous Than Rural Regions, Traffic Accident Study Shows

Posted: 08 Sep 2009 08:00 AM PDT

Transportation researchers in Germany analyzed traffic accident statistics and came to a surprising result: city dwellers have less severe traffic accidents than rural inhabitants. This invalidates one of the most important arguments in favor of a house in the countryside.

Half Of Fish Consumed Globally Is Now Raised On Farms, Study Finds

Posted: 08 Sep 2009 05:00 AM PDT

Aquaculture, once a fledgling industry, now accounts for 50 percent of the fish consumed globally, according to a new report by an international team of researchers. And while the industry is more efficient than ever, it is also putting a significant strain on marine resources by consuming large amounts of feed made from wild fish harvested from the sea, the authors conclude.

Infections May Lead To Faster Memory Loss In Alzheimer's Disease

Posted: 08 Sep 2009 05:00 AM PDT

Getting a cold, stomach bug or other infection may lead to increased memory loss in people with Alzheimer's disease, according to new research.

Function Of Neglected Structure In Neurons Revealed After 50 Years

Posted: 08 Sep 2009 05:00 AM PDT

Fifty years after it was originally discovered, scientists in Switzerland have elucidated the function of a microscopic network of tubules found in neurons. This structure modulates the strength of connections between two neurons, thereby contributing to our ability to learn and to adapt to new situations.

New Research Strategy For Understanding Drug Resistance In Leukemia

Posted: 08 Sep 2009 05:00 AM PDT

Researchers have developed a new approach to identify specific genes that influence how cancer cells respond to drugs and how they become resistant. This strategy, which involves producing diverse genetic mutations that result in leukemia and associating specific mutations with treatment outcomes, will enable researchers to better understand how drug resistance occurs in leukemia and other cancers, and has important long-term implications for the development of more effective therapies.

Anticancer Compound Found In Common Weed: American Mayapple

Posted: 08 Sep 2009 05:00 AM PDT

A common weed called American mayapple may soon offer an alternative to an Asian cousin that's been harvested almost to extinction because of its anti-cancer properties. The near-extinct Asian plant, Podophyllyum emodi, produces podophyllotoxin, a compound used in manufacturing etoposide, the active ingredient in a drug used for treating lung and testicular cancer. Podophyllyum emodi is a cousin of the common mayapple weed found in the United States.

To Get College Students To Wash Hands Requires Proper Tools, Attention-getting Tactics

Posted: 08 Sep 2009 05:00 AM PDT

Researchers observed that even during a high-profile norovirus outbreak, students followed recommended hand hygiene procedures just 17 percent of the time. In a self-reported survey after the outbreak had subsided, 83 of 100 students surveyed said they always followed proper hand hygiene but estimated that less than half of their peers did the same.

First Evidence Of Virus In Malignant Prostate Cells: XMRV Retrovirus Linked To More Aggressive Tumors

Posted: 08 Sep 2009 02:00 AM PDT

In a finding with potentially major implications for identifying a viral cause of prostate cancer, researchers have reported that a type of virus known to cause leukemia and sarcomas in animals has been found for the first time in malignant human prostate cancer cells.

MicroRNAs Circulating In Blood Show Promise As Biomarkers To Detect Pancreatic Cancer

Posted: 08 Sep 2009 02:00 AM PDT

A blood test for small molecules abnormally expressed in pancreatic cancer may be a promising route to early detection of the disease, researchers report.

Surgical Scrub Solution: Chlorhexidine Bathing Is Cheap And Effective Means Of Protecting Patients From Superbugs

Posted: 08 Sep 2009 02:00 AM PDT

Giving critically ill hospital patients a daily bath with a mild, soapy solution of the same antibacterial agent used by surgeons to "scrub in" before an operation can dramatically cut down, by as much as 73 percent, the number of patients who develop potentially deadly bloodstream infections, according to a new study by patient safety experts.

Prevent Periodontitis To Reduce The Risk Of Head And Neck Cancer

Posted: 08 Sep 2009 02:00 AM PDT

Chronic periodontitis, a form of gum disease, is an independent risk factor for head and neck squamous cell carcinoma. This suggests the need for increased efforts to prevent and treat periodontitis as a possible means to reduce the risk of this form of cancer.

Watermelon's Hidden Killer: Researchers Seek Disease-resistant Cultivars To Sustain Watermelon Crop Production

Posted: 08 Sep 2009 02:00 AM PDT

Watermelon vine decline is a new and emerging disease that has created devastating economic losses for watermelon producers in Florida. Caused by the whitefly-transmitted squash vein yellowing virus, the disease created monetary losses estimated at $60 to $70 million in Florida during the 2004 growing season. Responding to producers' concerns, scientists recently identified the cause of WVD and are seeking ways to control the plague.

Money Won't Buy Happiness, Study Finds; Poverty-reduction Programs Need To Also Look At Improving People's Well-being

Posted: 08 Sep 2009 02:00 AM PDT

There is more to life satisfaction than money, and public policy programs aiming to tackle poverty need to move beyond simply raising people's income to also improving their quality of life in other areas, according to a new study.

'Hygiene Hypothesis' Challenged: Day Care Doubles Early Respiratory Problems, Does Not Prevent Later Asthma And Allergy

Posted: 07 Sep 2009 09:00 PM PDT

New research hints that the common belief that kids who go to daycare have lower rates of asthma and allergy later in life might be nothing more than wishful thinking. While young children in daycare definitely do get more illnesses and experience more respiratory symptoms as a result, any perceived protection these exposures afford against asthma and allergy seem to disappear by the time the child hits the age of eight.

Patients With Interstitial Lung Disease Need Not Avoid Air Travel, Study Finds

Posted: 07 Sep 2009 09:00 PM PDT

Patients with interstitial lung disease (ILD) are often concerned about the occurrence of pneumothorax (collapsed lung) or other life-threatening events during air travel. However, new research shows that, even in ILD with a high prevalence of spontaneous pneumothorax, such as lymphangioleiomyomatosis (LAM), there is a relatively low risk of these events occurring.

Statins May Benefit Patients With COPD

Posted: 07 Sep 2009 09:00 PM PDT

Statins have been shown to benefit patients with cardiovascular disease and high cholesterol, but now research shows that statins may provide significant benefits for patients with chronic obstructive pulmonary disease (COPD).

Pediatric Chronic Cough Linked To Reflux And Allergies

Posted: 07 Sep 2009 09:00 PM PDT

New research shows that chronic cough in children is most often caused by gastroesophageal reflux and allergies.

Enzyme Inhibitor Takes An Unexpected Approach Toward Blocking Cancer-promoting Protein

Posted: 07 Sep 2009 09:00 PM PDT

Scientists have discovered a unique method of attack that may be used to inhibit signaling enzymes called kinases, which often have a role in sustaining drug-resistant cancerous cells. They have confirmed that IPA-3, a small molecular inhibitor of a kinase called PAK1, targets the enzyme's regulatory domain, mimicking how enzymes are naturally regulated within cells.

Healthy Older Brains Not Significantly Smaller Than Younger Brains, New Imaging Study Shows

Posted: 07 Sep 2009 09:00 PM PDT

The belief that healthy older brains are substantially smaller than younger brains may stem from studies that did not screen out people whose undetected, slowly developing brain disease was killing off cells in key areas, according to new research. As a result, previous findings may have overestimated atrophy and underestimated normal size for the older brain.

New Vaccine Shows Promise For COPD Patients At Risk For Pneumonia

Posted: 07 Sep 2009 09:00 PM PDT

A new vaccine against pneumonia may offer better protection from chronic obstructive pulmonary disease (COPD) patients than the currently accepted vaccine, according to recent research.

Even In A Safety Net Health System, Colorectal Cancer Screening Disparities Remain

Posted: 07 Sep 2009 09:00 PM PDT

Colorectal cancer screening rates are much lower among those in a safety net health system compared to the national average, and the number one predictor of screening is a combination of regular visits and insurance access. However, results of a recent study showed that the screening rate was merely 22 percent among individuals served by a safety net health system in Texas.

Nanoelectronic Transistor Combined With Biological Machine Could Lead To Better Electronics

Posted: 07 Sep 2009 05:00 PM PDT

If artificial devices could be combined with biological machines, laptops and other electronic devices could get a boost in operating efficiency. Researchers have now devised a versatile hybrid platform that uses lipid-coated nanowires to build prototype bionanoelectronic devices.

Oxidative Stress Is Underlying Cause Of Huge Numbers Of Genetic Mutations, Study Finds

Posted: 07 Sep 2009 05:00 PM PDT

A study that tracked genetic mutations through the human equivalent of about 5,000 years has demonstrated for the first time that oxidative DNA damage is a primary cause of the process of mutation -- the fuel for evolution but also a leading cause of aging, cancer and other diseases.

How To Boost Value Of Alzheimer's-fighting Compounds

Posted: 07 Sep 2009 05:00 PM PDT

The polyphenols found in red wine are thought to help prevent Alzheimer's disease, and new research has shown that some of those compounds in fact reach the brain.

Denosumab Increases Bone Density, Cuts Fracture Risk In Prostate Cancer Survivors

Posted: 07 Sep 2009 05:00 PM PDT

Twice-yearly treatment with denosumab, a new targeted therapy to stop bone loss, increased bone density and prevented spinal fractures in men receiving androgen-deprivation therapy for prostate cancer, a study has found.

Alarming Invasion Of Round Goby Into Great Lakes Tributaries: Impact On Endangered Fishes 'Serious'

Posted: 07 Sep 2009 05:00 PM PDT

Canadian scientists have identified a drastic invasion of round goby into many Great Lakes tributaries, including several areas of the Thames, Sydenham, Ausable and Grand Rivers. A number of the affected areas are known as "species-at-risk" hot spots.

Rate Of Teen Binge Drinking Cut More Than One Third By Prevention System

Posted: 07 Sep 2009 05:00 PM PDT

Rates of binge drinking were 37 percent lower among eighth-grade students in communities in seven states that used a prevention system designed to reduce drug use and delinquent behavior compared to teenagers in communities that did not use the system.

Lasers Generate Underwater Sound: Potential For Naval And Commercial Underwater Acoustic Applications

Posted: 07 Sep 2009 02:00 PM PDT

Scientists are developing a new technology for use in underwater acoustics. The new technology uses flashes of laser light to remotely create underwater sound. The new acoustic source has the potential to expand and improve both Naval and commercial underwater acoustic applications, including undersea communications, navigation and acoustic imaging.

Scientists Pinpoint Critical Molecule To Celiac Disease, Possibly Other Autoimmune Disorders

Posted: 07 Sep 2009 02:00 PM PDT

Scientists have uncovered a molecule critical to celiac disease and other autoimmune disorders, such as multiple sclerosis and diabetes.

Metaklett, A Steely Hook And Loop Fastener

Posted: 07 Sep 2009 02:00 PM PDT

Hook and loop fasteners made of spring steel -- similar to Velcro devices but much stronger -- have been developed by researchers in Germany. These fasteners are resistant to chemicals, and can withstand a tensile load of up to 35 tons per square meter at temperatures as high as 800 degrees Celsius. These characteristics make them suitable for applications including automotive engineering and building construction.

Narrow-band Imaging Increases Specificity Of Early Lung Cancer Detection

Posted: 07 Sep 2009 02:00 PM PDT

Researchers have found that narrow-band imaging bronchoscopy increases the specificity of bronchoscopic early lung cancer detection and can serve as an alternative detection device.

For Peat's Sake: Alternative Growing Media

Posted: 07 Sep 2009 02:00 PM PDT

Peat, or semi-decayed vegetation matter, has been used by commercial growers and amateur gardeners since the middle of the 20th century. Peat is added to potting soil to help retain moisture and provide additional nutrients. Concerns about the environmental impact of extracting peat from wetlands are mounting. Researchers evaluated five materials as partial peat substitutes. The results show these alternatives have potential.

Why Solitary Reptiles Lay Eggs In Communal Nests

Posted: 07 Sep 2009 02:00 PM PDT

Reptiles are not known to be the most social of creatures. But when it comes to laying eggs, female reptiles can be remarkably communal, often laying their eggs in the nests of other females. New research suggests that this curiously out-of-character behavior is far more common in reptiles than was previously thought.

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