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Science News Archive September 2006 - Page 14


Page 14 of 15

MRI on the cheap and on the go

Researchers at Lawrence Berkeley National Laboratory have developed a novel laser-based MRI technique that offers enhanced sensitivity and time resolution. The approach uses atomic magnetometry and separates signal encoding and detection steps, enabling optimized sensitivity and reducing costs.

SourceDOE/Lawrence Berkeley National Laboratory·JournalProceedings of the National Academy of Sciences·DateSep 5, 2006

Pine tree bark reduces diabetic leg ulcers

A study found that Pycnogenol heals diabetic leg ulcers by improving blood circulation and reducing tissue necrotization. Patients treated with oral and local Pycnogenol experienced a significant decrease in ulcer size and had higher oxygen presence in the skin.

SourceMWW Group·JournalClinical and Applied Thrombosis/Hemostasis·DateSep 5, 2006

Overweight in early childhood increases chances for obesity at age 12

Children who were overweight as toddlers are 5 times more likely to be overweight at age 12. BMI measurements collected over an extended period show a strong correlation between childhood and adolescent obesity. The study suggests that early intervention is crucial in preventing the progression of abnormal weight gain.

ACTOS reduces stroke by almost 50 percent

New analyses of the PROactive Study found that ACTOS (pioglitazone HCl) significantly reduced the risk of recurrent stroke in high-risk patients with type 2 diabetes, with a 47% reduction in incidence and a 28% decrease in combined risk of death, MI, or stroke.

Empty nesters can't let go

Researchers at the University of Cambridge discovered that African pied babbler adults continue to care for their young after they stop feeding directly. The parents call the inexperienced fledglings to areas with readily available food, improving their foraging success rate.

SourceUniversity of Cambridge·JournalCurrent Biology·DateSep 5, 2006

Researchers identify neurons that assign value during learning

Researchers used a genetic tool to activate specific neurons in fruit flies, revealing that two subsets of neurons are responsible for assigning positive or negative values to stimuli. This discovery advances our understanding of how animals learn to associate cues with experiences and has implications for more complex mammalian brains.

SourceCell Press·JournalCurrent Biology·DateSep 5, 2006

Scientists crack genetic secrets of human egg

Researchers at Michigan State University have identified 5,331 unique genes in the human egg, which may hold the key to understanding fertility issues and developing new stem cell therapies. The discovery could also pave the way for the creation of healthy stem cells without the need for fertilized embryos.

SourceMichigan State University·JournalProceedings of the National Academy of Sciences·DateSep 5, 2006

Music -- the key to feeling good?

The Braintuning project, a €2.5 million EU-funded research initiative, aims to investigate the relationship between music, emotions, and brain functions. Researchers seek to explain individual differences in musical preferences and emotional responses to music, as well as how environmental factors influence these experiences.

New model emphasizes breast density as a predictor of breast cancer risk, large study shows

A new model developed by scientists from Group Health and seven other health care organizations finds that breast density is a significant predictor of breast cancer risk, with women having highly dense breasts facing nearly four times the risk as those with fat-filled breasts. The study analyzed data from over 1 million women and iden...

SourceGroup Health Research Institute·JournalJNCI Journal of the National Cancer Institute·DateSep 5, 2006

Road-crossing in chimpanzees: A risky business

Researchers studied chimpanzee progression order as they crossed two roads, finding that adult males take up forward and rearward positions depending on risk level and number of adults present. This cooperative behavior helps maximize group protection, suggesting a high level of flexibility in dominant individuals.

SourceCell Press·JournalCurrent Biology·DateSep 5, 2006

A cognitive strategy shared by human infants and our great-ape kin

Researchers found that human infants and all great apes exhibit identical preferences for remembering where things are hidden. However, this preference shifts in 3-year-old human children, indicating a uniquely human developmental trajectory. The study provides insight into the evolution of human cognitive abilities and tendencies.

SourceCell Press·JournalCurrent Biology·DateSep 5, 2006

Switchable lotus effect

A new compound in the diarylethene family is synthesized and produces a microcrystalline film that becomes super-water-repellent when exposed to UV light, and returns to its original state with visible light. The material's surface undergoes changes in molecular structure, leading to reversible formation of microfibrils.

SourceWiley·JournalAngewandte Chemie·DateSep 5, 2006

Depression, risky sex behavior linked in African-American youth

A new study from the Bradley Hasbro Children's Research Center and Brown Medical School reveals that African American adolescents with depressive symptoms are at a higher risk of engaging in risky sexual behavior. The study concludes that assessing depressive symptoms can help prevent future emotional disorders and HIV/STI transmission...

SourceLifespan·JournalJournal of Adolescent Health·DateSep 5, 2006

Pall system to detect blood bacteria given CE mark

The Pall eBDS System is a highly sensitive culture-based test that detects bacterial contamination of red blood cells, reducing the risk of sepsis and death from transfusion. The system's novel approach to detection measures oxygen consumption as a marker for bacteria, allowing for effective detection of commonly found contaminants.

Cell-regulating gene may predict survival outcomes for breast cancer patients

A study found that cyclin D1 gene overexpression is associated with better survival outcomes and increased sensitivity to the cancer-fighting drug bortezomib in breast cancer patients. This is because it suppresses the activity of another gene, STAT3, which promotes cell growth and prevents tumor cells from dying.

SourceThe Mount Sinai Hospital / Mount Sinai School of Medicine·JournalJNCI Journal of the National Cancer Institute·DateSep 5, 2006

Gene signature assesses breast cancer outcomes

A new gene signature of 70 genes linked to breast cancer was found to accurately predict patient outcomes, surpassing traditional risk classifiers. The study's results suggest that the 70-gene signature adds valuable prognostic information, which may lead to improved treatment decisions and reduced chemotherapy for eligible patients.

SourceJournal of the National Cancer Institute·JournalJNCI Journal of the National Cancer Institute·DateSep 5, 2006

How can advances in biology be translated into better health?

Advances in biology are hindered by obstacles such as dwindling National Institutes of Health budgets and overly burdensome regulatory requirements. The Association of American Medical Colleges has outlined key recommendations to promote translational research, including increased investment in medical schools and teaching hospitals.

SourcePLOS·JournalPLOS Medicine·DateSep 4, 2006