Brightsurf Science News & Current Events

December 07, 2004
Tumor size alone not always best for gauging treatment response
Not only can positron emission tomography (PET) help evaluate treatment for gastrointestinal stromal tumors (GIST) by revealing biologic changes such as how the tumor processes the fuel that makes it grow, but CT can indirectly reveal biologic changes as well by analyzing the tumor's density, say researchers from The University of Texas M.

New weapon in germ warfare: 'Jamming' bacteria signals stops cholera
A new treatment for cholera and perhaps a new type of antibiotic medicine may emerge from compounds discovered in an Australian seaweed.

UCLA/VA research explains Alzheimer's link to diabetes; shows protective effect of low-fat diet
Using animal models and human tissue, a UCLA research team has 1) identified a shortfall of IDE protein in the brains of Alzheimer's disease patients; 2) found a cause-effect relationship between insulin signaling and increased production of IDE, and 3) demonstrated that a low-fat diet high in fish and soy can increase production of IDE.

Regional recovery more rapid following late Ordovician extinction
The length of time necessary to recover from a mass extinction may seem like a problem from the past, but a team of Penn State researchers is investigating recovery from the second largest extinction in Earth's history at the end of the Ordovician 443 million years ago and sees some parallels to today's Earth.

December 2004 Ophthalmology journal
Studies from the December 2004 issue of Ophthalmology, the clinical journal of the American Academy of Ophthalmology, are now available.

Add an 'E' to the alphabet for identifying melanoma
One more letter should be added to the alphabetic list of warning signs of melanoma, a potentially deadly skin cancer, according to a group of NYU School of Medicine dermatologists and their Australian colleagues.

Breast MRI moderately useful for detecting breast cancer, but does not eliminate need for biopsy
In women with breast lesions that are suspicious for cancer, based on clinical examination or mammography, performing a breast MRI has high sensitivity but only moderate specificity for detecting breast cancer, but does not necessarily eliminate the need for tissue sampling, according to a study in the December 8 issue of JAMA.

Bone marrow fat may indicate bone weakening
Measuring bone marrow fat (BMF) along with bone mineral density (BMD) can better predict weakening of bones than either test done alone, a new study indicates.

Idaho lab, Utah company achieve major milestone in hydrogen research
Researchers at the US Department of Energy's Idaho National Engineering and Environmental Laboratory and Ceramatec, Inc. of Salt Lake City are reporting a significant development in their efforts to help the nation advance toward a clean hydrogen economy.

Less fat makes better process for designing new drugs
Biochemists have overcome one of the major obstacles to drug design, by trimming some of the fat from a molecular sponge that scientists use to study proteins.

NIDCR launches unique initiative on oral biofilm
The National Institute of Dental and Craniofacial Research, part of the National Institutes of Health, has begun supporting an innovative, three-year study to compile the first full catalogue of genes found in oral biofilms, the sticky bacteria-laden films that form on our teeth and gums.

Accumulated lead exposure may be an important risk factor for cataracts
Accumulated exposure to lead may be an important but unrecognized risk for developing cataracts in men, according to a study in the December 8 issue of JAMA.

National Academies advisory CORRECTION: Adolescents in developing nations
In many developing countries, globalization has changed traditional expectations for young people navigating the passage to adulthood.

Pharmaceutical marketing tactics hold little sway with prescribing physicians
Pharmaceutical drug companies spend upward of $25 billion per year on promoting new drugs and distributing free samples to doctors, but new research shows such marketing devices have little impact on physicians and their prescribing behavior.

UNC study finds some schools better than others at curbing smoking at high school football games
North Carolina high schools that adopt Tobacco-Free School policies are making progress in protecting students, staff and visitors from the unhealthy effects of secondhand smoke by reducing smoking even during home football games, a new University of North Carolina at Chapel Hill study concludes.

INEEL honors five scientists as Laboratory Fellows
Idaho National Engineering and Environmental Laboratory Director Paul Kearns and INEEL Chief Scientist Richard Jacobsen have jointly announced five INEEL scientists and engineers honored as Laboratory Fellows.

Health care charges higher for older adults who were overweight or obese when younger
Men and women who were overweight or obese in young adulthood and middle age have significantly higher Medicare costs in older age, compared to their nonoverweight peers, according to a study in the December 8 issue of JAMA.

UC Riverside extension earns $1.2 million in grants for early childhood studies
UC Riverside Extension's Early Childhood and Family Studies programs earned $1.2 million in grant funding from the First 5 California Children and Families Commission.

U of MN researchers set new standard of care for adult cord blood transplant patients
University of Minnesota researchers will present the promising results from adult umbilical cord blood studies for patients with cancers of the blood and bone marrow.

Sandia to begin testing innovative arsenic-removal technologies in Socorro, N.M.
Over the next few weeks researchers at the National Nuclear Security Adminisration's Sandia National Laboratories will begin testing innovative ways to treat arsenic-contaminated water .

Stem cell research: The new medicine of the future
While the federal government ponders the ethical implications of therapeutic cloning, California is blazing a trail to the future.

Transplanted bone marrow cells reduce liver fibrosis in mice
Transplanted bone marrow cells can reduce carbon tetrachloride-induced liver fibrosis in mice and significantly improve their survival rates, according to a new study published in Hepatology.

Obesity in middle age may drastically raise future medicare expenditures
Overweight and obesity in young adulthood and middle age may have devastating effects on future Medicare expenditures, particularly given the continued and alarming increase in prevalence of obesity in the United States during recent decades, according to a study published in the Dec.

Second space Christmas for ESA: Huygens to begin its final journey to Titan
One year after Mars Express' arrival at Mars, the mighty rules of celestial mechanics have again set Christmas as the date for a major ESA event in deep space.

Money issues leading cause of holiday stress for Americans
What causes the most stress during the holiday season? Money issues were the top vote getters for holiday stress, according to a recent poll by the American Psychological Association (APA).

Marine snail study gives insights into human brain
What can cellular neuroscientists learn about the human brain from studying a marine snail?

Minority teens' views of drug use differ from reality
Most young Black adolescents appear to believe that their Black peers use drugs more than White or Hispanic teens, when in reality studies show that fewer Black youth use alcohol or other drugs than do youth of other ethnic groups, a Penn State researcher says.

Newborns with heart defect have low blood flow in brain before surgery
As survival rates have steadily improved for children with heart defects, physicians have focused more attention on improving quality-of-life factors such as neurological and cognitive abilities.

Protein 'key' could aid search for cancer drugs
New research at Rice University is allowing biochemists to understand a key hierarchy of protein interactions that occurs in DNA replication, showing for the first time how a key protein

Molecular chains line up to form protopolymer
A new chemical state, called a

New technique scans electrical 'brainscape'
Using hairlike microelectrodes and computer analysis, neurobiologists at Duke University Medical Center have demonstrated that they can see the detailed instant-to-instant electrical

News tips from the Journal of Neuroscience
Highlights in the December Journal of Neuroscience include: wake-sleep cycling in the rat and Insulin, IDE, and beta-Amyloid.

Bulimic teens also likely to suffer from depression
Teen-agers suffering from bulimia may in fact be fighting a two-front war, coping with the effects of a devastating eating disorder while struggling with a chronic form of depression, reveals research by Texas A&M University psychologist Marisol Perez, who says the finding has critical implications for the way the disorder is treated.

Red wine lovers, take heart: More evidence points to the drink's cardiac heath benefits
New research on rat heart cells suggests that a well-known antioxidant found in red wine, called resveratrol, may benefit heart tissue by limiting the effects of a condition called cardiac fibrosis.

Prevalence of nonalcoholic fatty liver disease varies by ethnicity
A new study has found hepatic steatosis - fatty liver disease - in nearly one third of American adults in a large urban population sample.

Magnetic resonance imaging helps detect breast cancer but does not eliminate need for biopsy
A multicenter study of 821 patients referred for breast biopsy based on prior examinations that suggested cancer finds that while magnetic resonance imaging (MRI) distinguishes between benign and malignant breast tumors better than mammography, biopsies are still needed to confirm the diagnosis.
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