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Science News for March 7, 2011


1 in 5 children in Sweden is overweight

A recent study by the University of Gothenburg found that one in five children in Sweden is overweight, with urban areas experiencing lower rates of obesity compared to smaller towns and rural areas. The study also highlights the link between low levels of education and overweight children.

SourceUniversity of Gothenburg·JournalObesity Reviews·DateMar 7, 2011

AGU journal highlights -- March 7, 2011

Groundwater depletion in California's Central Valley poses a significant threat to the state's economy and food security, with two-thirds of the loss attributed to central valley groundwater depletion. Conversely, corals are expanding their range poleward in temperate areas as seas warm, indicating rapid modifications to coastal ecosys...

SourceAmerican Geophysical Union·JournalGeophysical Research Letters·DateMar 7, 2011

Mediterranean diet: A heart-healthy plan for life

The Mediterranean diet has been shown to have beneficial effects on waist circumference, HDL-cholesterol levels, triglycerides, blood pressure, and glucose metabolism. A new study published in the Journal of the American College of Cardiology found that the diet can help prevent metabolic syndrome and its components.

SourceAmerican College of Cardiology·JournalJournal of the American College of Cardiology·DateMar 7, 2011

Multiple sclerosis blocked in mouse model

Researchers from Washington University School of Medicine successfully blocked harmful immune cells from entering the brain in mice with a condition similar to multiple sclerosis. The breakthrough discovery, made using an anti-cancer drug, prevents symptoms and provides early evidence for a potential new treatment.

SourceWashU Medicine·JournalJournal of Experimental Medicine·DateMar 7, 2011

Scientists find key mechanism of childhood respiratory disease

Researchers discovered a critical link between respiratory syncytial virus and oxidative stress, which causes lung inflammation and damage in children. The study found that the virus blocks the activity of Nrf2, a protein needed for antioxidant enzymes, leading to increased reactive oxygen species and cell killing.

SourceUniversity of Texas Medical Branch at Galveston·JournalAmerican Journal of Respiratory and Critical Care Medicine·DateMar 7, 2011

Acupuncture curbs severity of menopausal hot flushes

A small clinical trial suggests traditional Chinese acupuncture can curb the severity of menopausal hot flushes and other symptoms. The treatment showed cumulative benefits, with significant improvements in somatic and psychological symptoms but minimal impact on urogenital symptoms.

SourceBMJ Group·JournalAcupuncture in Medicine·DateMar 7, 2011

Jefferson study shows physician's empathy directly associated with positive clinical outcomes

A landmark study by Thomas Jefferson University researchers found a direct association between physicians' empathy and their patients' positive clinical outcomes. The study, published in Academic Medicine, suggests that empathic engagement in patient care contributes to better treatment adherence and more desirable clinical results.

SourceThomas Jefferson University·JournalAcademic Medicine·DateMar 7, 2011

People would rather let bad things happen than cause them, especially if someone is watching

A new study suggests that people are more likely to allow something bad to happen rather than causing it, especially if they know someone will judge them. The researchers found that participants were more willing to let a timer run out, resulting in less money for themselves, when they knew someone was watching and would penalize them.

SourceAssociation for Psychological Science·JournalPsychological Science·DateMar 7, 2011

Text messaging helps smokers break the habit

Researchers found that text messaging is at least as effective as handheld devices in measuring smoking urges and resisting cravings, with tailored interventions tailored to individuals' response-inhibition capacities. The study also identified key brain regions involved in response inhibition.

SourceUniversity of Oregon·JournalPsychological Science·DateMar 7, 2011

Increased, mandatory screenings help identify more kids with emotional/behavioral problems

A new court-ordered mental health screening program led to a significant increase in children being identified as behaviorally and emotionally at risk. The number of screens completed and referrals for mental health evaluations also increased, highlighting the importance of routine screening in identifying childhood psychosocial issues.

SourceMassachusetts General Hospital·JournalArchives of Pediatrics and Adolescent Medicine·DateMar 7, 2011

Helicobacter pylori infection linked to decreased iron levels in otherwise healthy children, according to research at UTHealth

Researchers at UTHealth discovered that children with asymptomatic H. pylori infections have lower iron levels compared to those without the infection. The study found that even in healthy children, the bacterium causes a decrease in iron storage, which may have long-term health consequences.

SourceUniversity of Texas Health Science Center at Houston·JournalJournal of Pediatric Gastroenterology and Nutrition·DateMar 7, 2011

Sleepy connected Americans

A National Sleep Foundation poll found that 43% of Americans report rarely getting a good night's sleep on weeknights due to pervasive technology use before bedtime. The study highlights the impact of screens and interactive technologies on sleep habits, particularly in younger generations.

Flipping a switch on neuron activity

Researchers at the University of California and Germany have developed light-sensing modules to attach to neuronal molecules, allowing for real-time study of complex cascades. This breakthrough enables selective activation of individual classes of molecules, paving the way for new treatments for vision impairments.

The underemployed -- increasing and overlooked

A study by University of Nevada, Reno researchers finds that underemployment is a complex phenomenon with broad effects on individuals, organizations, and society. The study identifies eight dimensions of underemployment, affecting up to one in three employees, with difficult situations like the recession leading to its occurrence.

SourceUniversity of Nevada, Reno·JournalJournal of Management·DateMar 7, 2011

You are what your mother ate

Poor diet during pregnancy increases offspring's vulnerability to aging effects, leading to increased risk of type 2 diabetes and age-related diseases. The study reveals a novel mechanism by which maternal diet interacts with epigenetics to influence gene expression in offspring throughout life.

SourceUniversity of Cambridge·JournalProceedings of the National Academy of Sciences·DateMar 7, 2011

JCI online early table of contents: March 7, 2011

Researchers create a molecular switch that enhances DC-mediated tumor antigen-specific T cell responses, improving the efficacy of cancer vaccines. Additionally, they find that reducing Tie1 levels attenuates the development of lesions in atherosclerosis models, highlighting a potential new target for therapy.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateMar 7, 2011

University of Maryland School of Medicine publishes scientific paper on 2001 anthrax attacks

Researchers from the Institute for Genome Sciences used genomics and microbiology to investigate the 2001 anthrax attacks, tracing the spores back to a flask containing Bacillus anthracis. The investigation led to the identification of Bruce Ivins as the perpetrator, marking the first use of microbial forensics in a criminal case.

SourceUniversity of Maryland Medical Center·JournalProceedings of the National Academy of Sciences·DateMar 7, 2011

Older parents are happier with more children

Research reveals a global trend where parents over 30 feel unhappy with each additional child, but those aged 40+ are happier than their peers until they have four or more children. Older parents tend to be happier than childless couples when they reach adulthood and can benefit from their financial support.

SourceMax-Planck-Gesellschaft·JournalPopulation and Development Review·DateMar 7, 2011

Parents important for keeping adolescents off alcohol

A new thesis from Karolinska Institutet highlights the importance of parental involvement in preventing adolescent alcohol consumption. Adolescents who exhibit risky behavior at an early age are more likely to develop high consumption patterns and associated health problems. Parents can make a significant difference by strengthening th...

Psychosocially hazardous neighborhoods associated with worse cognitive function in some older adults

A study found that older adults with the APOE ε4 allele who reside in psychosocially hazardous neighborhoods exhibit poorer cognitive performance in various domains, including processing speed and executive function. The presence of APOE ε4 alleles in African American populations also showed a significant impact on cognitive function.

SourceJAMA Network·JournalArchives of General Psychiatry·DateMar 7, 2011

Teaching robots to move like humans

Researchers at Georgia Institute of Technology found that when robots move in a more human-like fashion, people can better recognize what the robot is doing and mimic it themselves. The study used motion-capture technology to program a robot to perform human movements, resulting in improved human-robot interaction.

Suggesting genes' friends, Facebook-style

Scientists have developed a new method to understand how different genes interact and affect cellular processes. The technique enables the identification of genes that influence each other's effects, similar to Facebook suggesting friend pairs, which could help predict patient outcomes and adapt treatments for diseases like cancer.

SourceEuropean Molecular Biology Laboratory·JournalNature Methods·DateMar 7, 2011

High levels of 'good' cholesterol may cut bowel cancer risk

Research suggests that high levels of 'good' cholesterol (HDL) are associated with a reduced risk of bowel cancer. The association remains intact even after accounting for other factors such as inflammation, insulin resistance, and oxygen free radicals. HDL may alter the inflammatory process in some way, according to the study's authors.

SourceBMJ Group·JournalGut·DateMar 7, 2011

Rockefeller Scientists discover new compound that rids cells of Alzheimer protein debris

Scientists from Rockefeller University have discovered a new compound, SMER28, which stimulates autophagy and effectively slows down the accumulation of beta-amyloid protein aggregates in rat and mice cells. This approach offers a radically different method to treat Alzheimer's disease and other degenerative diseases.

Clinical observation leads to lung cancer discovery

A recent study published in the Journal of Thoracic Oncology has revealed that pemetrexed, an established chemotherapy drug, can produce significant responses in patients with anaplastic lymphoma kinase (ALK)-positive advanced non-small cell lung cancer. The treatment was found to be effective in over half of these patients, offering n...

SourceUniversity of Colorado Anschutz Medical Campus·JournalJournal of Thoracic Oncology·DateMar 7, 2011

Study examines prevalence of eating disorders among adolescents

The study found that eating disorders were common among US adolescents, with high prevalence rates of anorexia nervosa, bulimia nervosa, and binge-eating disorder. The researchers also discovered a strong association between eating disorders and social impairment, as well as increased risk of suicidality.

SourceJAMA Network·JournalArchives of General Psychiatry·DateMar 7, 2011

Using a molecular switch to turn on cancer vaccines

Researchers have developed a molecular switch that enables efficient activation of dendritic cells, a crucial step in cancer vaccine development. By combining MyD88 and CD40 signaling pathways, the switch synergistically activates dendritic cells to enhance antitumor efficacy.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateMar 7, 2011

Scripps Research and MIT scientists discover class of potent anti-cancer compounds

Researchers from Scripps Research and MIT have discovered a class of extremely potent anti-cancer and anti-neurodegenerative disorder compounds. These compounds, including ABL127, were found using high-throughput screening and innovative testing techniques, and show promise for treating cancer and Alzheimer's disease.

SourceScripps Research Institute·JournalProceedings of the National Academy of Sciences·DateMar 7, 2011

Transplanting umbilical cord and menstrual blood-derived stem cells offer hope for disorders

Researchers have found that stem cells derived from umbilical cord blood cells and menstrual blood may offer therapeutic benefits for disorders such as stroke, Alzheimer's disease, and amyotrophic lateral sclerosis (ALS). These cells can differentiate into various types of cells and have anti-inflammatory properties.