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Science News Archive October 2003 - Page 2


Page 2 of 10

NCCAM funds Centers of Excellence for Research on Complementary and Alternative Medicine

The National Center for Complementary and Alternative Medicine (NCCAM) has established two new research centers to investigate the underlying mechanisms and potential benefits of complementary and alternative medicine (CAM). The first two Centers of Excellence, funded with $5.9 million and $5.8 million grants, will focus on studying ac...

'Reset switch' for brain cells discovered

Researchers at Duke University Medical Center have discovered a molecular mechanism that allows neurons to adjust their sensitivity to stimulation, a process known as homeostatic plasticity. This discovery provides long-sought clues to how neurons protect themselves during stroke, epilepsy, and spinal cord injury.

Specialized brain helped ancient reptiles fly and hunt

Researchers have uncovered detailed insights into the brains of ancient flying reptiles, revealing a larger flocculus that enabled them to process sensory data from their wings. The study suggests that this neural center played a crucial role in the pterosaurs' ability to fly and hunt, allowing them to become highly adapted predators.

SourceOhio University·JournalNature·DateOct 29, 2003

Premature babies benefit from breast milk, study says

A study of premature infants found that human milk, fortified in-hospital, was comparable to nutrient-enriched formula for growth and development. The study tracked the progress of 463 premature infants under four pounds at birth, showing better visual acuity outcomes with human milk.

SourceUniversity of Toronto·JournalJournal of Pediatric Gastroenterology and Nutrition·DateOct 29, 2003

Messages from the abyss

Astronomers detect near-infrared flares from hot gas falling into the black hole, revealing its rapid rotation and chaotic environment. The findings provide unprecedented information about what happens just outside the event horizon.

SourceESO·JournalNature·DateOct 29, 2003

New guidelines on unrelated marrow transplants: A roadmap for physicians

The new guidelines call for searches within the National Marrow Donor Program registry conducted by histocompatibility specialists, with patients HLA typed to a high degree of resolution. High-resolution HLA typing is essential for all transplant patients, and the guidelines encourage considering transplants even without a perfect match.

SourceGeorgetown University Medical Center·JournalBiology of Blood and Marrow Transplantation·DateOct 28, 2003

New treatment to beat severe incontinence

Researchers have created a ring of muscle from the patient's own body and transplanted it to the bladder as a replacement sphincter. The new treatment uses an implanted electrical stimulator for a reliable method of passing urine only when needed, offering hope for millions suffering from severe stress incontinence.

Wolves are rebalancing Yellowstone ecosystem

The reintroduction of wolves to Yellowstone National Park has led to a remarkable recovery of cottonwood and willow species, as well as improved stream health. Young trees are now growing taller in areas where wolves are present, suggesting that the fear of predation is preventing elk from overgrazing.

SourceOregon State University·JournalEcological Applications·DateOct 28, 2003

The name of the game

Researchers analyzed data from twin pairs to find a link between leisure activities and reduced cognitive impairment. The study found that greater overall participation in intellectual-cultural activities, such as reading or joining clubs, was associated with a lower risk of Alzheimer's disease.

Improved remote mapping of disaster zones

Columbia researchers have developed a classification system for turning SAR data into detailed maps of landscape elements like water, vegetation, and rocks. This technology has shown superiority over optical remote sensing in identifying disaster zones, particularly during nighttime or with smoke and dust present.

Liver transplants result in excellent survival rates for patients with liver cancer

A US study found that liver transplantation significantly improves five-year survival rates for patients with hepatocellular carcinoma (HCC), from 25.3% in the late 1980s to 61.1% in the early 2000s. The study suggests that careful patient selection based on improved criteria may be a key factor in these improvements.

SourceAmerican Society of Clinical Oncology·JournalJournal of Clinical Oncology·DateOct 27, 2003

PTEN and prostate cancer--the devil is in the doses

Researchers created mouse models to study PTEN's impact on prostate cancer progression. Subtle reductions in PTEN dose produced progressive changes in the biology of tumors, with mice having no functional PTEN genes showing the most invasive and aggressive cancers.

SourcePLOS·JournalPLOS Biology·DateOct 27, 2003

Childhood obesity? School food service personnel say NIMBY

A study by Penn State researchers found that school service personnel who participated in a Project PA workshop recognized the importance of nutrition education and healthy eating behaviors in addressing childhood obesity. The participants identified parental attitudes, peer pressure, and media as barriers to students' healthful eating...

Straight from the heart

A Canadian study compared outcomes for patients with elevated cardiac markers who received a home health nurse-delivered disease management program versus those without. The results showed significant reductions in hospitalization days for congestive heart failure and angina. A commentary highlighted the need for a national program to ...

SourceCanadian Medical Association Journal·JournalCanadian Medical Association Journal·DateOct 27, 2003

Suffer the children

A Canadian study found that 96% of substantiated child abuse cases did not result in serious physical harm, highlighting the need for a reevaluation of investigative procedures and risk assessments. The study's findings also raise concerns about the emphasis on rapid intervention over longer-term service needs.

SourceCanadian Medical Association Journal·JournalCanadian Medical Association Journal·DateOct 27, 2003

Pollutant-eating microbe could speed gasworks cleanup

A newly discovered bacterium, Polaromonas naphthalenivorans strain CJ2, has been found to break down naphthalene and other toxins in coal tar contamination. The discovery was made using a new technique called stable isotopic probing (SIP), which allowed researchers to identify the microbe's DNA signature.

SourceCornell University·JournalProceedings of the National Academy of Sciences·DateOct 27, 2003