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Science News for April 19, 2016


Antiviral protein linked to depressed mood in mice

A study in mice reveals how antiviral immune response alters brain activity, impairing neuronal firing in the hippocampus and causing depressive-like behavior. The CXCL10/CXCR3 signaling pathway acts as a bridge between rising interferon levels and changes in neuronal activity, explaining mood changes.

SourceCell Press·JournalImmunity·DateApr 19, 2016

Cracking the Zika mystery

A recent study by Duke-NUS Medical School scientists has revealed the Zika virus structure and identified potential sites to target with therapeutics. The findings suggest that destabilizing the virus's structure may help reduce disease severity or limit transmission.

SourceDuke-NUS Medical School·JournalNature·DateApr 19, 2016

DNA sat nav uncovers ancient Ashkenaz

Researchers used a DNA tool to pinpoint the origin of Yiddish, suggesting it was invented by Iranian and Ashkenazic Jews as they traded on the Silk Road. The language is thought to have acquired new words from other cultures while retaining its Slavic grammar.

SourceUniversity of Sheffield·JournalGenome Biology and Evolution·DateApr 19, 2016

Nursing home ownership

The article examines the association between for-profit nursing home ownership and care quality, concluding that the precautionary principle should be applied. Observational studies show that publicly funded care in for-profit facilities is inferior to public or non-profit facilities.

SourcePLOS·JournalPLOS Medicine·DateApr 19, 2016

Researchers find a fast road out of poverty

A new study by researchers at the University of Oxford and the University of Toronto has found that upgrading roads and joining them to the city grid can dramatically increase land and property prices, leading to improved financial security for poor households. This infrastructure project in the Mexican city of Acayucan resulted in a 7...

SourceUniversity of Oxford·JournalThe Review of Economics and Statistics·DateApr 19, 2016

Using data to explore poetic sound

A researcher from Michigan State University is using a fellowship to study the role of sound in modern South Asian poetry, exploring rhyme, stress and patterns of repetition. The project aims to develop best practices for encoding linguistic data and preserve cultural forms in the region.

Scientists describe new model to enhance Zika virus research

A new mouse model developed by researchers at the University of Wisconsin-Madison School of Veterinary Medicine enables the study of Zika virus infection and its effects on the brain. The model, which lacks key immune system components, allows for the testing of vaccines and antivirals against the virus.

SourcePLOS·JournalPLOS Neglected Tropical Diseases·DateApr 19, 2016

New class of small molecule drug, SI-2, has potential for improving cancer treatment

Researchers at Baylor College of Medicine developed a new class of small molecule drug SI-2 that accelerates the destruction of cancer signaling molecule SRC-3, leading to slower cell proliferation and migration. The study suggests SI-2 has potential for improving cancer treatment with low toxicity to normal cells and animals.

SourceBaylor College of Medicine·JournalProceedings of the National Academy of Sciences·DateApr 19, 2016

From lighting screens to lighting homes

Researchers at Kyung Hee University propose a model to recycle lithium ion batteries into energy storage units for solar-powered LED lamps, reducing e-waste and providing job opportunities. The system can light up a room for about five hours each day, lasting approximately three years without maintenance.

SourceAmerican Institute of Physics·JournalJournal of Renewable and Sustainable Energy·DateApr 19, 2016

How much do we really see?

A study published in Trends in Cognitive Sciences suggests that our visual perception may be limited to the 'big picture', capturing details but not specifics. This challenge to the notion of rich visual experience highlights the complexities of consciousness and perception.

SourceCell Press·JournalTrends in Cognitive Sciences·DateApr 19, 2016

Prison's extended punch

A new study by Kathleen Brewer-Smyth of the University of Delaware's College of Health Sciences found that female inmates with an incarcerated adult family member during childhood were more than twice as likely to have neurological abnormalities as adults. The implications are significant internationally, particularly in light of a Wor...

SourceUniversity of Delaware·JournalHealth Care For Women International·DateApr 19, 2016

Low BMI and death after heart attack

A study published in PLOS Medicine found that low body mass index increases risk of mortality after acute myocardial infarction, even after controlling for other health factors. The researchers analyzed data from 57,574 elderly patients and found underweight patients had a 13-26% higher risk of death compared to normal weight patients.

SourcePLOS·JournalPLOS Medicine·DateApr 19, 2016

Making electronics out of coal

Researchers at MIT have successfully created simple electrical heating devices using coal, showcasing its potential for various high-tech uses. The team characterized the chemical, electrical, and optical properties of four different types of coal, revealing a range of conductivities that can be tailored to specific applications.

SourceMassachusetts Institute of Technology·JournalNano Letters·DateApr 19, 2016

The unique biology of human breast milk

Breast milk plays a crucial role in shaping the infant's immune system and gut microbiome by favoring the colonization of specific bacterial groups. After one month, breast milk composition transitions to support infant growth with increased fat and nutrients.

SourceCell Press·JournalTrends in Biochemical Sciences·DateApr 19, 2016

New treatment for advanced melanoma shows promise

A study published in JAMA found that pembrolizumab, an antibody against PD-1, was associated with a 33% objective response rate and 23-month median overall survival in patients with advanced melanoma. The treatment also showed improved progression-free survival rates of 35% at 12 months and 52% at 12 months

SourceJAMA Network·JournalJAMA·DateApr 19, 2016

UK labor ward staff and outcomes

A multicenter cohort study found no differences in Apgar scores, cord pH, or postpartum bleeding between out-of-hours and in-hours deliveries. However, women who delivered out-of-hours had slightly lower rates of cesarean section and instrumental delivery.

SourcePLOS·JournalPLOS Medicine·DateApr 19, 2016

Antipsychotic medications may be ineffective for treating or preventing delirium

Researchers analyzed data from 19 studies on hospitalized patients and found that antipsychotic medications did not reduce new cases of delirium. The study suggests that these medications may not affect the duration or severity of delirium, and more research is needed to understand their effectiveness in treating delirium.

SourceAmerican Geriatrics Society·JournalJournal of the American Geriatrics Society·DateApr 19, 2016

Immunotherapy drug shrinks tumors in half of patients with rare, virus-linked skin cancer

In a clinical trial, half of 25 patients with Merkel cell carcinoma experienced substantial tumor shrinkage lasting nearly three times as long as conventional chemotherapy. Several patients had no remaining evidence of disease. The results suggest that immunotherapy drugs may be effective for other virus-associated cancers.

SourceJohns Hopkins Medicine·JournalNew England Journal of Medicine·DateApr 19, 2016