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Science News for August 20, 2012


HIV home testing kits prove their worth

A recent study published in the journal AIDS and Behavior found that HIV home testing kits are a cost-effective and acceptable tool for preventing HIV transmission among men who have sex with men. The kits were found to be particularly effective in encouraging individuals to disclose their HIV status, leading to reduced risk of transmi...

SourceSpringer·JournalAIDS and Behavior·DateAug 20, 2012

Teaching a microbe to make fuel

Researchers have successfully engineered a soil bacterium to produce isobutanol, a renewable fuel source that can be used in current engines with minimal modification. The microbe, Ralstonia eutropha, was modified to use carbon dioxide as its carbon source, paving the way for potential applications in industrial-scale production.

SourceMassachusetts Institute of Technology·JournalApplied Microbiology and Biotechnology·DateAug 20, 2012

Drink made from berry wine may provide tasty drug for diabetes

Researchers have discovered compounds in berry wines that inhibit enzymes responsible for carbohydrate absorption, which could lead to a tasty and effective treatment for diabetes. The drinks contain high levels of anthocyanins, which have been shown to reduce inflammation and may have positive effects on cognitive function.

Survey finds symptoms of burnout common among US physicians

A national survey of 7,288 US physicians found that 45.8% reported symptoms of burnout, with higher rates in emergency medicine and family medicine specialties. The study highlights the need for policy makers and healthcare organizations to address physician burnout to improve patient care.

SourceJAMA Network·JournalArchives of Internal Medicine·DateAug 20, 2012

Hebrew SeniorLife links delirium and long-term cognitive decline in Alzheimer's patients

Patients with Alzheimer's who suffered delirium episodes had a sharply increased rate of mental decline for up to five years after hospitalization compared to those without episodes. The study highlights the importance of recognizing and preventing delirium, which is estimated to cost the healthcare system billions annually.

Anthrax targets

Researchers have discovered a range of protein targets in Bacillus anthracis that could be used to create new drugs, potentially reducing the risk of resistance. The identification of novel targets is crucial in the fight against anthrax and biological weapon threats.

SourceInderscience Publishers·JournalInternational Journal of Computational Biology and Drug Design·DateAug 20, 2012

Imprisoned molecules 'quantum rattle' in their cages

Researchers have created a 'nanolaboratory' inside a hollow spherical C60 Buckminsterfullerene molecule, allowing them to study the quantum mechanical principles governing the motion of imprisoned hydrogen and water molecules. The experiments revealed wave-like behavior and 'quantum rattling' of the guest molecules within the C60.

SourceUniversity of Nottingham·JournalProceedings of the National Academy of Sciences·DateAug 20, 2012

Making sense out of the biological matrix of bipolar disorder

A new study by Dr. Inti Pedroso and colleagues has identified key genes and neural signaling pathways involved in the development of bipolar disorder. The findings, published in Biological Psychiatry, provide insight into the complex biology of the disorder and highlight potential new avenues for treatment.

SourceElsevier·JournalBiological Psychiatry·DateAug 20, 2012

Secondhand smoke impairs vital cough reflex in kids

Children exposed to secondhand smoke have a less sensitive cough reflex, making them more susceptible to environmental threats and increasing the risk of developing respiratory illnesses like pneumonia and bronchitis. The study's findings highlight a previously unrecognized public health risk from exposure to secondhand smoke.

SourceMonell Chemical Senses Center·JournalContributions to Tobacco & Nicotine Research·DateAug 20, 2012

Carers and pharmacists confused about paracetamol doses for overweight kids

A survey of carers and pharmacists found that they often incorrectly calculated paracetamol doses for overweight children. The recommended dose should be adjusted according to the child's actual body weight, but many responders got it wrong. To prevent adverse consequences, simple evidence-based dosing guidelines must be developed.

SourceBMJ Group·JournalEuropean Journal of Hospital Pharmacy·DateAug 20, 2012

Scientists shed light on glowing materials

Researchers mapped how light behaves in complex photonic materials, breaking the limit of light resolution at the nanoscale. They developed a new technique combining electronic excitation and optical detection to explore the inside of a photonic crystal, revealing new insights into light-matter interactions.

SourceKing's College London·JournalNature Materials·DateAug 20, 2012