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Science News for August 16, 2006


Brain's cannabinoid system 'mellows' seizures

Researchers discovered that the brain's endocannabinoid system provides 'on-demand' protection against seizures by modulating glutamatergic transmission in neurons. The study suggests that this system might be a prime target for drugs against epilepsy and neurodegenerative diseases.

SourceCell Press·JournalNeuron·DateAug 16, 2006

African Americans have lower response rate to standard therapy for hepatitis C

A study found that African Americans with hepatitis C infection experience a lower response rate to peginterferon alfa-2a and ribavirin combination treatment compared to Caucasian Americans. The racial difference in viral responses was seen as early as the fourth week of treatment, with African Americans having a significantly lower su...

SourceAmerican Gastroenterological Association·JournalGASTROENTEROLOGY·DateAug 16, 2006

Ammonia-loving archaea win landslide majority

A recent study has found that crenarchaeota, a group of single-celled microbes, are the Earth's most abundant land-based creatures capable of oxidizing ammonia. This discovery challenges the long-held belief that bacteria were solely responsible for nitrogen cycles.

SourcePenn State·JournalNature·DateAug 16, 2006

Mapping the neural landscape of hunger

Studies have mapped brain regions and feeding cycles, but this study records neuronal activity across a full cycle of hunger-satiety-hunger. The researchers found that populations of neurons change their activity over the different phases of a feeding cycle, reflecting the physiological state of the animals.

SourceCell Press·JournalNeuron·DateAug 16, 2006

UA physicist discovers exotic superconductivity

Physicist Andrei Lebed has discovered exotic superconductivity where electron pairs exhibit both rotating and non-rotating behavior, breaking down conventional symmetry laws. This phenomenon is observed in strong magnetic fields and has significant implications for our understanding of quantum mechanics.

SourceUniversity of Arizona·JournalPhysical Review Letters·DateAug 16, 2006

TV effective 'painkiller' for kids

A small study found that TV effectively reduces kids' pain scores, with passive distraction being more effective than active distraction. Watching TV increases children's pain tolerance, making it a useful tool for minor procedures.

SourceBMJ Specialty Journals·JournalArchives of Disease in Childhood·DateAug 16, 2006

Study finds MRSA most common cause of skin infections in patients presenting in nation's ER's

MRSA is the most common cause of skin and soft-tissue infections among patients presenting in emergency rooms across the country, according to a UCLA study. The infection was found to be resistant to commonly used antibiotics, emphasizing the need for clinicians to culture infections and prescribe effective medications.

SourceUniversity of California - Los Angeles·JournalNew England Journal of Medicine·DateAug 16, 2006

Far away galaxy under the microscope

Scientists have discovered large, rotating disc galaxies that formed on a rapid time scale, just 3 billion years after the Big Bang. These findings reveal unprecedented details about the anatomy of these distant proto-disc galaxies, including their gas motions and star formation rates.

SourceESO·JournalNature·DateAug 16, 2006

Study provides evidence that autism affects functioning of entire brain

A recent study found that autism is a global disorder affecting how the brain processes information, particularly when it becomes complicated. The study discovered that individuals with autism perform well in basic functioning tasks but struggle with complex tasks involving sensory perception, movement, and memory.

Location, location, location!

Researchers discovered that brain neurons combine economic value and spatial information to control decision-making behaviors, contradicting the previous pure economic view. This study has implications for understanding human disorders such as addiction, depression, and obsessive-compulsive disorder.