Add BrightSurf on Google Email

Science News Archive September 2012 - Page 14


Page 14 of 27

When it rains, it pours

A study by MIT estimates that tropical regions will see 10% heavier rainfall extremes with every 1 degree Celsius rise in temperature, posing significant risks for flooding. The research suggests a higher sensitivity of tropical extreme rainfall to global warming than previously thought.

SourceMassachusetts Institute of Technology·JournalNature Geoscience·DateSep 17, 2012

Adequate sleep helps weight loss

A recent study published in CMAJ found that total sleep time and quality significantly predict fat loss in individuals enrolled in a weight loss program. Incorporating adequate sleep into lifestyle packages is now recognized as crucial for effective obesity management.

SourceCanadian Medical Association Journal·JournalCanadian Medical Association Journal·DateSep 17, 2012

How bees decide what to be

Researchers found 155 regions of DNA with different tag patterns in bees, which were mostly regulatory genes known to affect other genes. The epigenetic marks were reversible and connected to the bees' behavior, with more than half of those regions already identified among the original 155 regions.

SourceJohns Hopkins Medicine·JournalNature Neuroscience·DateSep 16, 2012

Nurses examine caregiver grief

Researchers developed a theory of caregiving through the end of life, comparing it to a theory on bereavement. They found significant conceptual similarities between the two theories, validating both models. The study aims to help nurses provide timely support to family caregivers after a loved one's death.

Surgery more profound effect than anesthesia on brain pathology, cognition in Alzheimer's mice

Researchers at the University of Pennsylvania School of Medicine have found that surgery itself has a profound impact on brain pathology and cognition in mice with human Alzheimer disease genes. Surgery causes a lasting increase in Alzheimer's pathology and significant cognitive impairment, primarily through inflammation.

SourceUniversity of Pennsylvania School of Medicine·JournalAnnals of Surgery·DateSep 14, 2012

Researchers find our inner reptile hearts

Scientists have identified the genetic building blocks behind the human heart's subtle control system, which shares similarities with birds and reptiles. The study reveals that a spongy inner tissue in fetal hearts stretches out to form a fine network of conductive tissue in adult animals.

SourceAarhus University·JournalPLOS ONE·DateSep 14, 2012

X-rays reveal the self-defence mechanisms of bacteria

A new X-ray study reveals that persister cells are regulated by toxins produced by the bacteria themselves, allowing them to enter a dormant state. This understanding can lead to the development of treatments that block toxin function and production, potentially improving outcomes in life-threatening diseases.

SourceAarhus University·JournalStructure·DateSep 14, 2012

Feeling stressed by your job? Don’t blame your employer, study shows

A recent study by University of Notre Dame researcher Timothy Judge found that genes play a significant role in job stress and health problems. He studied nearly 600 twins and discovered that shared genes were about four times more important than shared environments in shaping personality, stress, and health outcomes.

SourceUniversity of Notre Dame·JournalOrganizational Behavior and Human Decision Processes·DateSep 14, 2012

Probing matters of the heart

A new study has outlined how interactions between genes, proteins and molecules direct the development of stem cells into mature heart cells. The research could help scientists better understand how genetic mutations lead to congenital heart defects and assist efforts to engineer artificial heart tissue.

Simple tool may help evaluate risk for violence among patients with mental illness

A new study suggests that a simple, structured risk assessment tool can improve the accuracy of clinicians in evaluating the risk of violence among patients with severe mental illnesses. The tool, called HRC-20-C, has been shown to be effective in reducing errors and improving safety for staff and patients in high-risk settings.

SourceUniversity of California - San Francisco·JournalPsychiatric Services·DateSep 14, 2012