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Science News for February 21, 2017


Testosterone treatments may increase cardiac risks

A new study published in JAMA suggests that testosterone treatments may increase the risk of heart disease in older men. The study found a significant increase in arterial plaque among men aged 65 and older who received testosterone replacement therapy for a year, with a 20% rise in total coronary and noncalcified plaque volumes.

SourceLA BioMed·JournalJAMA·DateFeb 21, 2017

Discovery could help doctors to spot cardiovascular disease at an earlier stage

Researchers have discovered a new group of apolipoproteins, including apoE, apoC2, and apoC3, that are associated with a stronger link to cardiovascular disease. These findings could lead to improved screening methods and personalized treatments for patients at risk of cardiovascular disease.

SourceNIHR Biomedical Research Centre at Guy’s and St Thomas’ and King’s College London·JournalJournal of the American College of Cardiology·DateFeb 21, 2017

Experimental malaria vaccine offers durable protection against many strains in NIH trial

A Phase 1 clinical trial found that the PfSPZ Vaccine protected 64% of healthy adults from a different malaria strain, while also inducing durable T cell responses. The vaccine showed cross-protection against multiple strains, providing hope for an effective malaria vaccine.

SourceNIH/National Institute of Allergy and Infectious Diseases·JournalProceedings of the National Academy of Sciences·DateFeb 21, 2017

Improvements in ACL surgery may help prevent knee osteoarthritis

A new review suggests that improved ACL reconstruction techniques can restore normal knee motion and slow degenerative changes associated with osteoarthritis. The placement of a graft on the femur is crucial for preventing cartilage thinning, a key factor in maintaining joint health and function.

SourceWiley·JournalJournal of Orthopaedic Research®·DateFeb 21, 2017

Offshore wind push

Researchers from University of Delaware and Princeton University show that US grid can manage large amounts of offshore wind power, reducing pollution and electricity costs. The study found that the PJM grid can handle over 35 gigawatts of offshore wind, powering approximately 10 million homes.

SourceUniversity of Delaware·JournalRenewable Energy·DateFeb 21, 2017

New design for longer lasting night-vision cameras

Researchers from Northwestern University developed a new approach to improve night-vision cameras using strained-layer indium arsenide/indium arsenide antimonide type-II superlattices. The new design enables infrared cameras to perform imaging at higher temperatures, reducing the need for cryogenic cooling power.

SourceNorthwestern University·JournalAPL Materials·DateFeb 21, 2017

ORC as Loader of the Rings

Researchers have mapped the critical steps of DNA replication, revealing how a ring-shaped protein called origin recognition complex (ORC) initiates the process by slipping into a groove on DNA and initiating a cascade of microscopic interactions. The study provides new insights into an immensely complex system that is constantly ongoi...

SourceVan Andel Research Institute·JournalNature Structural & Molecular Biology·DateFeb 21, 2017

New window into the nanoworld

Researchers have captured images of terahertz electron dynamics of a semiconductor surface on the atomic scale, unlocking a new window into the nanoworld. The breakthrough allows for ultrafast observation of atomic processes with unprecedented precision.

SourceUniversity of Alberta·JournalNature Physics·DateFeb 21, 2017

Can North American animals such as rabbits, cows, or pigs serve as hosts for Zika virus?

A new study investigated the potential role of North American animals as hosts for Zika virus. Researchers tested common animal species, including goats, pigeons, raccoons, and ducks, for infectious virus presence and antibodies. The findings suggest that these animals may serve as an unseen reservoir for Zika virus in urban environments.

SourceMary Ann Liebert, Inc./Genetic Engineering News·JournalVector-Borne and Zoonotic Diseases·DateFeb 21, 2017

Counting sharks

A team of scientists from UC Santa Barbara and colleagues conducted an eight-year study on a healthy shark population on Palmyra atoll. They found a significantly lower density of grey reef sharks than previously estimated, with around 20 sharks per square kilometer.

SourceUniversity of California - Santa Barbara·JournalScientific Reports·DateFeb 21, 2017

Artificial synapse for neural networks

Scientists at Stanford University and Sandia National Laboratories have developed an artificial synapse that mimics the human brain's efficient processing. This innovation could lead to the creation of more brain-like computers that can interpret visual and auditory signals with improved accuracy.

SourceStanford University·JournalNature Materials·DateFeb 21, 2017

Rice U. study probes microbe, virus co-evolution

A Rice University study models the dynamic evolution of the microbial immune system, revealing a three-region phase diagram where phages thrive or are driven to extinction. The study explains confusing CRISPR experimental results by highlighting the importance of encounter rates and mutation parameters.

SourceRice University·JournalInterface·DateFeb 21, 2017

Hormonal maintenance therapy may improve survival in women with chemo-resistant rare ovarian or peri

Researchers found that hormonal maintenance therapy significantly improved survival in women with low-grade serous carcinoma of the ovary/peritoneum. Women who received HMT showed an average progression-free survival of 64.9 months, compared to 26.4 months for those in the surveillance group.

SourceUniversity of Texas M. D. Anderson Cancer Center·JournalJournal of Clinical Oncology·DateFeb 21, 2017

In great shape

Berger's Isomax material achieves low density and uncommon strength, making it suitable for various applications such as aerospace structures and robotic machines. The study's findings support the concept's potential for efficient fabrication and manufacturing.

Deep Learning predicts hematopoietic stem cell development

Researchers developed an algorithm that uses Deep Learning to predict the decision of hematopoietic stem cells to become a certain cell type. This enables earlier detection and analysis of blood cell development, paving the way for new treatments and insights into developmental traits.

Five studies in JAMA, JAMA Internal Medicine examine effect of testosterone treatment on various health outcomes in men

Studies published in JAMA and JAMA Internal Medicine found that testosterone treatment was associated with improved bone density and anemia in men with low testosterone. However, the studies also found no significant association between testosterone treatment and improved cognitive function or reduced risk of cardiovascular problems.

SourceJAMA Network·JournalJAMA·DateFeb 21, 2017

Stabilizing energy storage

Researchers improve redox flow batteries by designing charge-storing molecules that are up to 1,000 times more stable than current compounds. This breakthrough aims to increase the capacity and efficiency of large batteries for grid storage, enabling full utilization of renewable energy sources.

Israeli, Palestinian researchers cooperate to find risks for B cell non-hodgkin lymphoma

A large-scale epidemiological study has uncovered common and unique risk factors for B-cell non-Hodgkin lymphoma (B-NHL) in Israeli and Palestinian populations. The study found that recreational sun exposure, black hair-dye use, and a history of hospitalization for infection were associated with an increased risk of B-NHL in both groups.

Life expectancy set to increase in developed nations

Life expectancies in developed countries are projected to continue increasing, with South Korean women potentially surpassing 90 years old by 2030. The study predicts significant gains in life expectancy for men and women in several countries, including Australia, France, Japan, and the UK.

SourceThe Lancet·JournalThe Lancet·DateFeb 21, 2017

Longevity-promoting superstar gets revealed in Caenorhabditis reproducibility project

The Caenorhabditis Intervention Testing Program (CITP) identified Thioflavin T as the most robust pro-longevity chemical, extending lifespan in all strains tested. Six out of ten compounds significantly extended lifespan in at least one strain, with three dietary restriction mimetics showing variable responses across species.

SourceBuck Institute for Research on Aging·JournalNature Communications·DateFeb 21, 2017

Risk of Ross River Virus global epidemic

A new study suggests that the virus may have been circulating silently in the South Pacific since a large epidemic in 1979-80. Researchers found that many people born after the epidemic had antibodies to the virus, indicating local transmission.

SourceUniversity of Adelaide·JournalInternational Journal of Infectious Diseases·DateFeb 21, 2017

Modern housing associated with reduced malaria risk in sub-Saharan Africa

A study published in PLOS Medicine found that modern houses with metal roofs and finished walls are associated with a reduced risk of malaria in children under age 5. The researchers analyzed data from 29 surveys in 21 African countries and found a significant correlation between improved housing conditions and lower malaria rates.

SourcePLOS·JournalPLOS Medicine·DateFeb 21, 2017

Maths and maps make you nervous? It could be in your genes

A new study by researchers at King's College London found that genetic factors play a significant role in anxiety related to spatial and mathematical tasks. The study identified several forms of anxiety, including general, mathematics, and spatial anxiety, with non-shared environments contributing to differences between individuals.

SourceKing's College London·JournalScientific Reports·DateFeb 21, 2017