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Science News for October 30, 2006


Turmeric supplements show promise in treating arthritis

Researchers found that turmeric extract inhibited joint destruction and inflammation, altering gene expression and preventing osteoclast activation. A dose of 1.5 milligrams per day may be effective for humans, suggesting a potential mechanism similar to anti-inflammatory drugs.

SourceWiley·JournalArthritis & Rheumatism·DateOct 30, 2006

Hope remains for Alzheimer's sufferers

Recent research published in the Lancet has shown that nursing home patients with severe Alzheimer's disease experienced significantly improved cognitive function when treated with donepezil. Additionally, data suggests that these drugs are effective in patients with milder forms of Alzheimer's disease, sparking hope for a potential re...

SourceFuture Science Group·JournalFuture Neurology·DateOct 30, 2006

Computing catches up with theory

A team of researchers has developed a model that tests Pe-ter Richardson's long-held hypothesis about the formation of blood clots. The model, which uses high-speed computing, reproduces several odd features of thrombus growth observed in laboratory experiments and tissue pathologies.

SourceBrown University·JournalProceedings of the National Academy of Sciences·DateOct 30, 2006

Shopping still costs the Earth

A recent study by the University of Leeds reveals that consumers often trade off environmental performance for price, with most valuing bargains over eco-friendly options. Researchers identified three types of consumers: selectors, translators, and exceptors, who vary in their commitment to sustainable values.

Adults who go to bed lonely get stress hormone boost next morning

A study by Northwestern University found that older adults who go to bed feeling lonely, sad, or overwhelmed have elevated levels of cortisol the next morning. This morning cortisol boost can help regulate hormone levels and facilitate positive social experiences, potentially mitigating health problems associated with chronic stress.

SourceNorthwestern University·JournalProceedings of the National Academy of Sciences·DateOct 30, 2006

Assessing ecosystem services to identify conservation priorities

Two studies use spatially explicit models to quantify ecosystem services and their costs, guiding conservation planning in Paraguay and California. The approaches reveal tradeoffs between biodiversity and ecosystem services, highlighting the need for a systematic framework that balances both.

SourcePLOS·JournalPLOS Biology·DateOct 30, 2006

Dementia on the rise in aging populations

A new study suggests that dementia will become increasingly common as life expectancy rises, particularly among older women. The researchers found that a higher level of education was associated with only a slightly lower risk of dementia before death.

SourcePLOS·JournalPLOS Medicine·DateOct 30, 2006

Language center of the brain is not under the control of subjects who 'speak in tongues'

A neuroimaging study at the University of Pennsylvania School of Medicine found decreased activity in frontal lobes and increased thalamus activity when subjects spoke in tongues. The study suggests that glossolalia may be associated with non-intentional control by another part of the brain, challenging traditional views on language co...

SourceUniversity of Pennsylvania School of Medicine·JournalPsychiatry Research·DateOct 30, 2006

Study reveals religious leader's silent secret

A University of Alberta researcher found that John de Ruiter's silent approach asserts his charismatic authority over followers by projecting their own meaning, discouraging dissent, and forming intimate bonds. This method allows de Ruiter to continually prove himself as extraordinary to his followers.

SourceUniversity of Alberta·JournalJournal of Contemporary Religion·DateOct 30, 2006

First evidence to show elephants, like humans, apes and dolphins, recognize themselves in mirror

Researchers at Emory University's Yerkes National Primate Research Center found that elephants can recognize themselves in a mirror, exhibiting complex behaviors like self-awareness and social complexity. This discovery suggests convergent evolution with humans and highlights the species' high level of intelligence and empathy.

SourceEmory University Health Sciences Center·JournalProceedings of the National Academy of Sciences·DateOct 30, 2006

Tastes great! Study shows brain's response to pleasing -- and changing -- tastes

Researchers tracked brain activity in rats while they tasted water, salt water, and sugar water, finding that a formerly disliked taste became pleasurable when the rats were deprived of salt. This study provides new insights into how the brain processes pleasure and has implications for understanding eating disorders and addiction.

SourceMichigan Medicine - University of Michigan·JournalJournal of Neurophysiology·DateOct 30, 2006

Turmeric prevents experimental rheumatoid arthritis, bone loss, University of Arizona study shows

A new study by researchers at the University of Arizona found that turmeric extract can prevent experimental rheumatoid arthritis and reduce bone loss. The curcuminoid extract inhibited the activation of NF-KB, a protein that enhances production of inflammatory proteins, and blocked the pathway that affects bone resorption.

SourceUniversity of Arizona Health Sciences·JournalArthritis & Rheumatism·DateOct 30, 2006

Towards predicting late-stage radiation toxicity

Researchers identified a gene expression profile associated with late radiation toxicity, correctly classifying 63% of patient populations. The study suggests that some patients are genetically predisposed to develop late-radiation toxicity and provides clues about molecular pathways involved.

SourcePLOS·JournalPLOS Medicine·DateOct 30, 2006

Connection between depression and osteoporosis shown by Hebrew University researchers

Researchers at Hebrew University found a link between depression and osteoporosis, showing that anti-depressant drugs can halt bone density loss. The study used laboratory mice to demonstrate the connection, revealing a neural system linking the brain to bones, which is disrupted in depressed individuals.

SourceThe Hebrew University of Jerusalem·JournalProceedings of the National Academy of Sciences·DateOct 30, 2006

Osteoarthritis patients treated with acupuncture show improvement

A randomized controlled trial found that osteoarthritis patients who received acupuncture treatment in addition to routine care showed significant improvements in symptoms and quality of life. The study's results suggest that acupuncture can be an effective treatment option for OA patients, with benefits lasting beyond the therapy period.

SourceWiley·JournalArthritis & Rheumatism·DateOct 30, 2006

The power behind insect flight: Researchers reveal key kinetic component

Researchers have discovered a key molecular mechanism allowing tiny flies to whirl their wings at high speeds, revealing new insights into heart disease and the evolution of flight. The findings provide a better understanding of how chemical energy is converted into muscle movements, including human heart muscle pumping blood.

SourceRensselaer Polytechnic Institute·JournalProceedings of the National Academy of Sciences·DateOct 30, 2006

Faulty gene linked to prostate cancer risk

A large germline deletion in the Chek2 kinase gene is associated with an almost doubled risk of prostate cancer. The study found this deletion in 24% of healthy people and 0.8% of diagnosed patients from Poland, suggesting a higher prevalence among men from eastern Europe.

SourceBMJ Specialty Journals·JournalJournal of Medical Genetics·DateOct 30, 2006

MRSA vaccine shows promise in mouse study

Researchers at the University of Chicago have developed a vaccine that protects mice against multiple, drug-resistant strains of Staphylococcus aureus. The combined vaccine, based on four bacterial surface proteins, provided significant protection against five virulent strains and reduced bacterial load to undetectable levels.

SourceUniversity of Chicago Medical Center·JournalProceedings of the National Academy of Sciences·DateOct 30, 2006