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Science News Archive September 2011 - Page 12


Page 12 of 29

Epigenetic changes don't last

Scientists discovered that epigenetic modifications in plants, such as DNA methylation, are unstable and often disappear after a few generations. These changes can occur frequently but usually do not contribute significantly to long-term evolution.

SourceMax-Planck-Gesellschaft·JournalNature·DateSep 20, 2011

If insurance companies pay out too often, farmers will be threatened with ruin in the long term

A new study found that rain-index insurance can have ecological consequences if farmers adopt unsustainable grazing practices. The study suggests that insurance payouts in periods of moderate drought may incentivize farmers to abandon sustainable management strategies, leading to overgrazing and increased soil erosion. To mitigate thes...

SourceHelmholtz Association·JournalEcological Economics·DateSep 20, 2011

Living alone is associated with an increased risk of alcohol-related deaths

A Finnish study published in PLoS Medicine found that people living alone are more vulnerable to the adverse effects of increased alcohol availability, leading to a substantially increased risk of alcohol-related mortality. The study analyzed data from over 80% of Finland's population between 2000 and 2007 and discovered a greater incr...

SourcePLOS·JournalPLOS Medicine·DateSep 20, 2011

Early HIV treatment cost-effective in resource-limited settings

A cost-effectiveness study found that early antiretroviral treatment (ART) is cost-effective in resource-poor settings like Haiti. The study supports the implementation of the new WHO guidelines for early ART initiation, which recommend treatment for all HIV-infected patients with CD4 cell counts below 350 cells/mm3.

SourcePLOS·JournalPLOS Medicine·DateSep 20, 2011

Rude employee behavior quietly sabotages the bottom line

A study by Boston College researchers found that one-third of consumers experience rude treatment from employees once a month. This behavior leads to negative reactions, decreased customer loyalty, and lost profits. Training programs promoting employee civility can help prevent such incidents.

SourceBoston College·JournalJournal of Service Research·DateSep 20, 2011

Stem cells, potential source of cancer-fighting T cells

Researchers at Penn State College of Medicine found a way to generate antigen-specific T cells using induced pluripotent stem (iPS) cells, which could lead to a simpler and more efficient method for using the body's immune system to fight cancer. The study, published in Cancer Research, used iPS cells from mice converted into immune ce...

SourcePenn State·JournalCancer Research·DateSep 20, 2011

Expanding flu vaccinations to older children reduces emergency visits for flu-like illnesses by 34 percent

A study found that vaccinating children aged two to four years against seasonal influenza resulted in a 34% decline in flu-like illnesses. Vaccination of this age group also led to a 11% decline in other nontarget age groups, suggesting reduced transmission at home and in the community.

SourceCanadian Medical Association Journal·JournalCanadian Medical Association Journal·DateSep 19, 2011

Genetic factors behind high blood pressure

Researchers have identified 16 new genetic variations that affect blood pressure, providing a significant step towards better diagnostics and treatment. The discovery was made using genetic data from over 200,000 Europeans and reveals new genetic risk groups to help predict the risk of strokes and heart attacks.

SourceUniversity of Gothenburg·JournalNature·DateSep 19, 2011

Post-silicon computing

The University of Pittsburgh has received a $1.8 million grant to create a new kind of computer using a tiny 'toy' with big potential. The project aims to develop a scalable sensing, storage, and computation platform, enabling the creation of high-tech industries and jobs in the United States.

Study finds bidirectional relationship between schizophrenia and epilepsy

A recent study published in Epilepsia found a strong bidirectional relationship between schizophrenia and epilepsy. Patients with epilepsy were significantly more likely to develop schizophrenia, while those with schizophrenia had a higher incidence of epilepsy. The research suggests shared genetic and environmental factors contributin...

SourceWiley·JournalEpilepsia·DateSep 19, 2011

Back pain? Move, don't rest!

Patients with acute low back pain who were advised to stay active despite the pain fared better in recovery and mental health compared to those told to adjust their activity in line with their pain. This study found that staying active can help patients recover more quickly and manage depression.

SourceUniversity of Gothenburg·JournalClinical Journal of Pain·DateSep 19, 2011

Anti-reflux surgery helps airway function both before and after lung transplant

A new study from the University of Pittsburgh School of Medicine found that anti-reflux surgery can preserve lung function in patients with end-stage pulmonary disease both before and after transplantation. The procedure was associated with improved lung function, reduced episodes of acute rejection and pneumonia, and may help extend t...

Key regulatory genes often amplified in aggressive childhood tumor of the brainstem

Researchers found over half of diffuse intrinsic pontine glioma (DIPG) tumors carried extra copies of specific cancer-linked genes, offering potential new treatments. The study, led by St. Jude Children's Research Hospital scientists, analyzed 43 DIPG samples and identified two key regulatory mechanisms disrupted in the tumor.

SourceSt. Jude Children's Research Hospital·JournalJournal of Clinical Oncology·DateSep 19, 2011

To ditch dessert, feed the brain

A study published by Yale University researchers found that when the brain's glucose levels drop, an area responsible for regulating emotions and impulses loses its ability to resist high-calorie food. This response is particularly pronounced in obese individuals, who exhibit a heightened desire for high-calorie foods.

SourceYale University·JournalJournal of Clinical Investigation·DateSep 19, 2011

Shake hands with the invisible man

Researchers at Tel Aviv University identified the genetic defect responsible for adermatoglyphia, a rare condition where individuals lack fingerprints. The study found that a skin-specific gene mutation affects fingerprint development, leading to reduced sweat gland function and abnormal fingerprints.

SourceAmerican Friends of Tel Aviv University·JournalAmerican Journal of Human Genetics·DateSep 19, 2011

How devoted moms buffer kids in poverty

A new study finds that children raised in poverty who have nurturing mothers are less likely to develop metabolic syndrome and experience health problems in adulthood. The study suggests that maternal nurturance plays a crucial role in reducing and managing childhood stress, ultimately promoting healthier outcomes for these children.

SourceAssociation for Psychological Science·JournalPsychological Science·DateSep 19, 2011