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Science News for May 16, 2013


Genetic risk for schizophrenia is connected to reduced IQ

A new study published in Biological Psychiatry found a link between genetic risk for schizophrenia and lower IQ, suggesting common genetic variants may contribute to cognitive decline. The research analyzed data from 937 individuals and found that those with higher genetic risk had lower IQ at age 70 but not at age 11.

SourceElsevier·JournalBiological Psychiatry·DateMay 16, 2013

Cancer survivors battle with the blues

Depressive symptoms observed in cancer survivors between one and ten years after diagnosis increase the risk of premature death. Cancer survivors with depression are twice as likely to have died early compared to those without depression.

SourceSpringer·JournalJournal of Cancer Survivorship·DateMay 16, 2013

Vitamin C does not lower uric acid levels in gout patients

New research published in Arthritis & Rheumatism found that vitamin C supplementation had a weak effect on lowering uric acid levels in gout patients. The study suggests that vitamin C may not be a viable therapy for reducing uric acid levels in patients with established gout.

SourceWiley·JournalArthritis & Rheumatism·DateMay 16, 2013

Endothelium, heal thyself

The endothelium, a cellular layer lining blood vessels, has an efficient barrier function maintained by its ability to heal micro-wounds. New research shows that biomechanical signals trigger the recovery response, generating reactive oxygen species to close gaps and restore functionality.

SourceBeth Israel Deaconess Medical Center·JournalJournal of Cell Biology·DateMay 16, 2013

Add boron for better batteries

Researchers at Rice University found that adding boron to graphene improves its ability to store lithium ions, resulting in a capacity two times larger than graphite. The discovery also enables the material to hold a proper voltage, making it suitable for commercial use.

SourceRice University·JournalThe Journal of Physical Chemistry Letters·DateMay 16, 2013

Body mass index of low income African-Americans linked to proximity of fast food restaurants

Researchers found that living closer to a fast food restaurant was associated with a higher body mass index (BMI) among low-income African-American adults. The study controlled for factors such as household income, physical activity, and sedentary behaviors to determine the relationship between fast food density and BMI.

SourceUniversity of Texas M. D. Anderson Cancer Center·JournalAmerican Journal of Public Health·DateMay 16, 2013

Breakthrough for IVF?

Researchers have developed a method to identify embryos with chromosomal abnormalities using time-lapse imaging and morphokinetic analysis, avoiding invasive biopsies. This approach has shown significant improvements in implantation and live birth rates when low-risk embryos are transferred.

SourceElsevier·JournalReproductive BioMedicine Online·DateMay 16, 2013

Health transitions in Pakistan

A comprehensive assessment of Pakistan's health systems reveals significant shortcomings in financing, accountability, and training. Key findings include below-average performance in life expectancy, child mortality rates, and improved sanitation, with opportunities for reform under the provincial devolution of health mandate.

SourceThe Lancet_DELETED·JournalThe Lancet·DateMay 16, 2013

European Society of Human Genetics urges caution over use of new genetic sequencing techniques

The European Society of Human Genetics urges caution on using new genetic sequencing techniques due to potential risks and benefits. The society recommends targeted analysis to limit unsolicited findings, ensuring patients' rights are protected while also providing them with necessary health information.

SourceEuropean Society of Human Genetics·JournalEuropean Journal of Human Genetics·DateMay 16, 2013

Ethicists provide framework supporting new recommendations on reporting incidental findings in gene sequencing

A group of experts developed a framework for reporting incidental findings in clinical exome and genome sequencing, following the American College of Medical Genetics and Genomics recommendations. The framework justifies reporting clinically beneficial incidental findings as ethically compatible with respect for patient autonomy.

SourceBaylor College of Medicine·JournalScience·DateMay 16, 2013

Beautiful 'flowers' self-assemble in a beaker

At Harvard University, scientists have developed a method to assemble intricate nanostructures into delicate flower-like structures. By manipulating chemical gradients, researchers can control the growth behavior of these crystals to create precisely tailored structures, mimicking nature's own self-assembly processes.

SourceHarvard University·JournalScience·DateMay 16, 2013

Work-related stress linked to increased blood fat levels

Researchers found that job stress is associated with an altered lipid profile, leading to higher rates of 'bad' cholesterol and lower levels of 'good' cholesterol. This can increase the risk of cardiovascular disease. The study analyzed data from over 90,000 workers and found a significant link between job stress and dyslipidemia.

SourceSpanish Foundation for Science and Technology·JournalScandinavian Journal of Public Health·DateMay 16, 2013

World's smallest droplets

Researchers at Vanderbilt University have created the world's smallest liquid droplets in a lab experiment. The tiny droplets, about one-100,000th the size of a virus, exhibit flow-like behavior similar to quark-gluon plasma, a state of matter thought to have existed in the universe during its early stages.

SourceVanderbilt University·JournalPhysics Letters B·DateMay 16, 2013

Research into carbon storage in Arctic tundra reveals unexpected insight into ecosystem resiliency

A recent study published in Nature found that the Arctic tundra's carbon storage has remained relatively stable despite two decades of slow and steady warming. The researchers attributed this unexpected resilience to increased plant growth and changing soil conditions, which facilitated stabilizing feedbacks to offset soil carbon loss.

Fishing for memories

Japanese researchers from RIKEN Brain Science Institute have visualized the process of remembering learned behavior in zebrafish. The study uses calcium imaging to trace neural activity and finds that short-term and long-term memories are formed in different parts of the brain.

SourceRIKEN·JournalNeuron·DateMay 16, 2013

Climate change may have little impact on tropical lizards

A Dartmouth College study suggests that many species of tropical lizards may not be on the brink of extinction due to climate change. The research found that high-resolution temperature measurements revealed varying effects on different lizard populations, contradicting previous predictions of widespread extinction.

SourceDartmouth College·JournalGlobal Change Biology·DateMay 16, 2013