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Science News Archive October 2012 - Page 32


Page 32 of 33

Fluoxetine increases aggressive behavior, affects brain development among adolescent hamsters

A study published in Behavioral Neuroscience found that repeated fluoxetine administration to adolescent hamsters increased offensive aggression and altered brain areas related to aggression control. The research suggests that clinically relevant doses of fluoxetine during adolescence can dramatically alter brain circuitry implicated i...

SourceNortheastern University College of Science·JournalBehavioral Neuroscience·DateOct 1, 2012

Computerized osteoporosis detection

Researchers have developed a new computerized technique to diagnose osteoporosis using X-rays, which estimates bone porosity and improves accuracy over visual examination. The system has shown high accuracy rates of less than 2% in detecting osteoporosis in elderly Asian patients.

SourceInderscience Publishers·JournalInternational Journal of Biomedical Engineering and Technology·DateOct 1, 2012

Overweight teens get mental health boost from even small amounts of exercise

Overweight adolescents who engaged in regular exercise showed improvements in scholastic competence, social competence, and body image, according to a recent study. The researchers found that even modest doses of aerobic exercise had a positive impact on mental health, including psychological empowerment and reduced emotional distress.

SourceChildren's Hospital of Eastern Ontario Research Institute·JournalJournal of Pediatric Psychology·DateOct 1, 2012

Smartphone technology acceptable for telemedicine

A Mayo Clinic study confirms the effectiveness of smartphone teleradiology applications in evaluating stroke patients in remote settings. The study shows high agreement (92-100%) among reviewers on critical radiological features, paving the way for telemedicine expansion.

SourceMayo Clinic·JournalStroke·DateOct 1, 2012

JCI early table of contents for October 1, 2012

Researchers at the Medical University of South Carolina found that saturated fatty acids and specific metabolic pathways contribute to diabetic cardiomyopathy in mice. Additionally, a study published by Helen Hobbs' group identified the mutation PNPLA3 as a contributing factor to non-alcoholic fatty liver disease in mice.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateOct 1, 2012

Misconduct, not error, accounts for most scientific paper retractions

A new study found that misconduct accounts for two-thirds of all retracted scientific papers, with fraud or suspected fraud being the leading cause. The number of retractions has increased 10-fold since 1975, attributed to a winner-take-all culture in science that rewards publication and reputation over integrity.

SourceAlbert Einstein College of Medicine·JournalProceedings of the National Academy of Sciences·DateOct 1, 2012

Popular antidepressant might prevent heart failure

Researchers at the University of Michigan discovered that paroxetine inhibits GRK2, a protein kinase involved in heart failure, improving myocardial contractility without affecting heart rate. The team hopes to optimize and develop these compounds into therapeutic leads for heart failure treatment.

SourceUniversity of Michigan·JournalACS Chemical Biology·DateOct 1, 2012

Therapeutic time window important factor for cord blood cell transplantation after stoke

A study found that transplantation within a 72-hour time window resulted in early functional recovery and reduced brain atrophy. The optimal therapeutic time window was determined to be between 72 hours and 120 hours after stroke onset, with no benefit observed when transplanted at 14 days.

Longest fiber-optic sensor network developed

Montserrat Fernández-Vallejo has developed the longest fibre-optic sensor network measuring 250 km with a multiplexing capability, enabling remote monitoring of large infrastructures. The network addresses three main challenges: multiplexing sensors, ensuring continued service in case of faults, and allowing remote monitoring.

SourceElhuyar Fundazioa·JournalIEEE Sensors Journal·DateOct 1, 2012

Republican strength in Congress aids super-rich, president's affiliation has no effect

A new study by American Sociological Association investigates the rise of the top 1 percent and finds that Republican strength in Congress increases their share of income. The study also reveals a significant link between decreased union membership and higher levels of inequality, as well as a strong effect of financial asset bubbles o...

SourceAmerican Sociological Association·JournalAmerican Sociological Review·DateOct 1, 2012

Low birth weight may increase risk for cardiovascular disease, kidney disease and diabetes

A new study published in The FASEB Journal suggests that being born with a low birth weight may increase the risk of developing cardiovascular disease, kidney disease, and diabetes later in life. Researchers found that older female rats had a reduced ability to become pregnant and carried babies that were smaller or lighter in weight.

Climate change cripples forests

Researchers found that warmer temperatures and increased atmospheric evaporative demand will lead to widespread tree mortality and changes in forest distributions. The study used a 'Forest Drought Stress Index' to estimate annual regional tree-growth variability with exceptional accuracy.

SourceDOE/Los Alamos National Laboratory·JournalNature Climate Change·DateOct 1, 2012

How sexual power can be disempowering

A new study by Dr. Lisa Rosenthal found that social dominance orientation can lead to increased sexual risk-taking and decreased confidence among both men and women, particularly when it comes to using female condoms.

SourceSpringer·JournalSex Roles·DateOct 1, 2012

Annals of Internal Medicine tip sheet for Oct. 2, 2012

Researchers found that inviting patients to read their doctors' notes boosts patient engagement, adherence, and control in healthcare plans with minimal impact on doctor workload. Additionally, the use of electronic health records improves diabetes care by enhancing monitoring, treatment, and glucose control. New equations for estimati...

SourceAmerican College of Physicians·JournalAnnals of Internal Medicine·DateOct 1, 2012

Nano-hillocks: Of mountains and craters

A team of researchers from Helmholtz-Zentrum Dresden-Rossendorf and TU Vienna discovered that highly charged ions can create nano-hillocks or craters on surfaces. The formation depends on the ion beam's charge state and kinetic energy, with nano-hillocks forming at higher energies.

SourceHelmholtz Association·JournalPhysical Review Letters·DateOct 1, 2012

Putting a 'HEX' on muscle regeneration

Researchers found that HEXIM1 blocks gene expression necessary for muscle regeneration after injury, leading to increased muscle mass and function in mice with reduced HEXIM1 levels. This suggests that HEXIM1 may be a key regulator of skeletal muscle regeneration and a potential therapeutic target for degenerative muscle diseases.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateOct 1, 2012