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Science News for June 5, 2014


Rice developing mobile DNA test for HIV

Researchers at Rice University have developed a nucleic acid-based test to detect signs of HIV and track viral loads in patients in low-resource settings. The new test, called qRPA, uses recombinase polymerase amplification and can be performed at the site of care, eliminating the need for complex lab equipment.

SourceRice University·JournalAnalytical Chemistry·DateJun 5, 2014

Short nanotubes target pancreatic cancer

Researchers at Rice University have developed customized carbon nanotubes that can deliver chemotherapy agents to pancreatic cancer cells. The nanotubes are small enough to pass through the pores of cancer-related blood vessels, allowing them to target and infiltrate the nuclei of cancerous cells.

SourceRice University·JournalJournal of Materials Chemistry B·DateJun 5, 2014

Termites, fungi and climate change

A new study reveals that local-scale factors, such as terrain and temperature, explain most of the variation in wood decomposition, while climate plays a smaller role. The research suggests that termites and fungi have a more significant impact on decomposition than previously thought, which can improve climate change projections.

SourceUniversity of Central Florida·JournalNature Climate Change·DateJun 5, 2014

Brazil leads the world in reducing carbon emissions

A study reveals how Brazil reduced deforestation while increasing agriculture production, with a combination of public policies and market incentives driving change. The country's success could be replicated globally, but fragile results may be short-lived without positive incentives for farmers.

SourceSimons Consulting·JournalScience·DateJun 5, 2014

Parliamentary means dissensus

Parliamentary means dissensus explores the confrontational nature of parliamentary politics, where opponents' views are thoroughly examined. The book offers new approaches to democratic theory by highlighting the singular political significance of parliaments.

What's in the sheep genome? Wool see

The completed sheep genome sequencing has led to an advanced understanding of genes involved in making sheep unique. The study identified a new pathway for lipid metabolism in sheep skin, which may play a role in wool development and efficient grease production.

SourceCSIRO Australia·JournalScience·DateJun 5, 2014

New findings out on brain networks in children at risk for mental disorders

A Wayne State University study reveals that children genetically at risk for schizophrenia and bipolar disorder experience communication breakdowns in brain networks supporting attention. This dysfunction may amplify risk for psychiatric illnesses, highlighting potential premeditative intervention strategies.

Unmasking viral invaders

Researchers used mass spectrometry to study CMV's dynamics in infected cells, identifying ways the virus evades the immune system and targeting cell surface proteins. The discovery offers new therapeutic targets and potential treatments for CMV-related diseases.

SourceHarvard Medical School·JournalCell·DateJun 5, 2014

Future heat stroke treatment found in dental pulp stem cells

Researchers found that intravenous injections of dental pulp stem cells have a protective effect against brain damage from heat stroke in mice. The treatment inhibited neurological deficits and reduced oxidative damage to the brain. However, further studies are needed to determine the precise mechanism of SHED-mediated growth factors.

A new model of liver regeneration

Researchers have found that mature liver cells can dedifferentiate into functional progenitor cells, allowing them to regenerate a diseased liver. This discovery challenges long-held theories about the role of stem cells in liver regeneration.

SourceHarvard University·JournalCell·DateJun 5, 2014

Can mice mimic human breast cancer? MSU study says 'yes'

A recent MSU study has discovered that many preclinical models of human breast cancer can replicate several key characteristics, particularly at the gene level. The researchers analyzed 1,172 mouse mammary tumor samples from 26 different models and found that most human breast cancers can be represented by one specific strain of mice.

SourceMichigan State University·JournalBreast Cancer Research·DateJun 5, 2014

Restoring trust in VA health care

The VA's decline in safe, effective patient-centered care can be fixed by refocusing on primary mission, ensuring quick screening of veterans on wait lists, and implementing a 'continuous healing relationship' strategy. Strong leadership and greater transparency are key to restoring trust in the system.

SourceUniversity of California - Davis Health·JournalNew England Journal of Medicine·DateJun 5, 2014

Alcohol-related terms can increase aggression

Researchers found that exposure to alcohol-related words increased aggressive behaviour following provocation when it was ambiguous or not clear-cut. The effects of alcohol priming are short-lived, diminishing after seven minutes and disappearing after 15 minutes.

SourceUniversity of Kent·JournalPersonality and Social Psychology Bulletin·DateJun 5, 2014

New tuberculosis test more than skin deep

A new screening process for tuberculosis uses interferon-gamma release assays (IGRA) to detect pre-existing TB infections, potentially saving thousands from unnecessary treatment. The test can identify latent TB cases that may not reactivate within years, reducing the risk of mass exposure in crowded prison facilities.

SourceQueen's University·JournalThe International Journal of Tuberculosis and Lung Disease·DateJun 5, 2014

Making artificial vision look more natural

Researchers have made significant progress in creating artificial vision that mimics the retina's natural response to movement. By targeting specific cells, they were able to reproduce natural patterns of activity, bringing closer the goal of restoring high-fidelity vision to blind individuals.

SourceNIH/National Eye Institute·JournalNeuron·DateJun 5, 2014

Cutting edge methods reveal what makes Purkinje neurons unique

Researchers discovered a comprehensive catalogue of proteins manufactured in specific parts of Purkinje neurons using cutting-edge methods TRAP and CAGEscan. This finding holds key to understanding molecular events and potential insights into diseases associated with Purkinje cells.

SourceRIKEN·JournalGenome Research·DateJun 5, 2014

Is glaucoma a brain disease?

A new study published in TVST found that glaucoma is controlled by the brain, not the eye. The research shows that as previously disabled optic nerve axons recover, the remaining areas of permanent visual loss coincide with the areas that can still see in the other eye, forming a jigsaw puzzle-like pattern.

SourceAssociation for Research in Vision and Ophthalmology·JournalTranslational Vision Science & Technology·DateJun 5, 2014

Silent mutations speak up

Researchers at the University of Utah found that multiple silent mutations greatly impact protein translation, with some causing a five-fold decrease in speed. The study also reveals that codon context matters, altering translation efficiency by up to 30-fold.

SourceUniversity of Utah·JournalPLOS Genetics·DateJun 5, 2014

For forests, an earlier spring than ever

Harvard researchers found forests in the Eastern US are showing signs of spring growth earlier than ever, enabling them to store up to 26 million metric tons more CO2. However, continued climate change may lead to more dramatic negative consequences, such as changes in precipitation patterns and reduced water availability for forests.

SourceHarvard University·JournalNature Climate Change·DateJun 5, 2014

Stem cells hold keys to body's plan

Researchers at Case Western Reserve University have identified a new class of genetic switches, called seed enhancers, that guide the development of pluripotent stem cells. These enhancers play roles from before birth to adulthood and hold promise for regenerative medicine and disease prevention.

SourceCase Western Reserve University·JournalCell Stem Cell·DateJun 5, 2014

Improved glucose control slows progression to end-stage renal disease in type 1 diabetes

A long-term observational study found that people with type 1 diabetes who have developed kidney complications can slow the progression of their complications by improving control of their glycemic levels over the long term. Those who lowered their HbA1C levels demonstrated a significantly lower risk of end-stage renal disease after a ...

SourceJoslin Diabetes Center·JournalJournal of the American Society of Nephrology·DateJun 5, 2014

First 3-D pterosaur eggs found with their parents

Researchers have found the first three-dimensionally preserved pterosaur eggs in China, providing new insights into the flying reptiles' reproductive strategy, development, and social behavior. The discovery suggests that pterosaurs lived together in gregarious colonies, with males and females having distinct head crest features.

SourceCell Press·JournalCurrent Biology·DateJun 5, 2014

Brain circuit problem likely sets stage for the 'voices' that are symptom of schizophrenia

Researchers at St. Jude Children's Research Hospital identified a disrupted brain circuit that may contribute to auditory hallucinations in schizophrenia. The study, published in Science, suggests that reducing information flow between two brain structures involved in processing auditory information sets the stage for stress triggers.