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Science News for September 28, 2011


Alcohol-related behavior changes -- blame your immune system

A new study found that blocking Toll-like receptors reduces the effects of alcohol on the brain, which could lead to treatments for alcohol dependence and acute overdoses. This shift in understanding may help identify individuals at risk of brain damage after long-term drinking.

SourceWiley·JournalBritish Journal of Pharmacology·DateSep 28, 2011

End-of-life discussions do not affect survival rates, study shows

A new study published in Journal of Hospital Medicine found that discussing end-of-life care with physicians does not affect survival rates. Patients who have advance directives in their medical records also have similar survival rates as those without these discussions and documents.

SourceWiley·JournalJournal of Hospital Medicine·DateSep 28, 2011

Saving heart attack victims with computer science

A new study has identified subtle markers of heart damage hidden in hours of EKG recordings, allowing doctors to identify high-risk heart attack patients. The researchers found that these anomalies can predict patient mortality within 12 months, enabling targeted treatments to save lives.

SourceUniversity of Michigan·JournalScience Translational Medicine·DateSep 28, 2011

Millesecond memory

Researchers at NTNU's Kavli Institute for Systems Neuroscience discovered that memory is divided into discrete packets, with each packet lasting around 125 milliseconds. The brain switches between these packets rapidly, allowing it to 'flip' between different maps of location and experience.

Resisting peer pressure

A new Northwestern University study found that adolescents in mixed friend groups were insulated from the influence of peers who were delinquent or low-academic achievers. Neighborhood violence and territorial boundaries constrained their friendship choices.

SourceNorthwestern University·JournalSocial Psychology Quarterly·DateSep 28, 2011

Global conservation priorities for marine turtles

Researchers have developed a new method to evaluate spatially and biologically distinct groups of marine turtles, identifying 11 out of 58 worldwide turtle regions as most at risk. The study highlights the need for targeted conservation efforts for these threatened populations.

SourcePLOS·JournalPLOS ONE·DateSep 28, 2011

Control gene for developmental timing discovered

University of Alberta researchers identified a key regulator controlling the speed of development in fruit flies. Blocking this regulator sped up development, leading to faster maturation. The study defines a novel mechanism for regulating steroid hormone pulses, crucial for human health and disease.

SourceUniversity of Alberta·JournalPLOS Biology·DateSep 28, 2011

Students 'jump into action' for better health

A new study from the University of Missouri shows Jump Into Action (JIA), a school-based physical activity program, is effective in changing unhealthy youth behaviors. JIA participants reported increased knowledge of health behaviors and adopted many of these behaviors, leading to improved nutrition and reduced screen time.

SourceUniversity of Missouri-Columbia·JournalJournal of Extension·DateSep 28, 2011

Wildlife Conservation Society study uncovers a predictable sequence toward coral reef collapse

A study by the Wildlife Conservation Society identified 8 changes that occur on coral reefs before they collapse due to overfishing. Researchers found a 'window' of maximum sustainable yield between 300-600 kilograms per hectare, but when fish stocks drop below this threshold, reef degradation accelerates.

SourceWildlife Conservation Society·JournalProceedings of the National Academy of Sciences·DateSep 28, 2011

New University of Houston research focuses on teenage mind

Researchers at the University of Houston have found a connection between borderline personality disorder and hypermentalizing in adolescents, which can lead to emotional regulation challenges. The study's findings suggest that early intervention and treatment can improve strategies for managing BPD symptoms.

SourceUniversity of Houston·JournalJournal of the American Academy of Child & Adolescent Psychiatry·DateSep 28, 2011

Drug companies must report clinical trial results, even when they won't lead to a product

Clinical trials should be reported even when product development is terminated to benefit the research community and prevent negative drug developments from being unpublished. This ensures greater patient safety, improves treatment research strategies, and optimizes resource allocations for promising new therapeutics.

SourceUniversity of California - Davis Health·JournalScience Translational Medicine·DateSep 28, 2011