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Science News Archive April 2018 - Page 3


Page 3 of 42

City upbringing, without pets, boosts vulnerability to mental illness

A new study published in PNAS found that children raised in rural environments with animals have more stress-resilient immune systems and lower risk of mental illness than pet-free city dwellers. The research supports the 'hygiene hypothesis,' which posits that overly sterile environments can breed health problems.

SourceUniversity of Colorado at Boulder·JournalProceedings of the National Academy of Sciences·DateApr 30, 2018

Using mathematical modeling and evolutionary principles important in treatment decisions

Researchers at Moffitt Cancer Center used mathematical modeling to show that adaptive drug treatments based on tumor responses are more effective than maximum-tolerated dose approaches. The approach can be tailored to specific tumor types, such as melanoma and breast cancer, and may lead to better patient outcomes.

Back up: How worms travel in reverse

A study on genetically diverse worms reveals that a small protein called FLP-18 controls the length of their backward movement, which increases the likelihood of changing direction to navigate towards food. This mechanism may help the worm explore a larger area during periods of extreme hunger.

Brown widow male spiders prefer sex with older females likely to eat them afterwards

In a study published in Animal Behaviour, researchers found that male brown widow spiders prefer to mate with older, less-fertile females who are more likely to cannibalize them after sex. This surprising preference for older females suggests that males may be making decisions based on factors other than fertility.

The South Atlantic Anomaly is probably not an evidence of a reversing Earth's magnetic field

Scientists from GFZ and universities reconstructed past changes in Earth's magnetic field using paleomagnetic data. They found that the South Atlantic Anomaly is unlikely to be a precursor of a pole reversal, as it was followed by increased field strength and disappearance of similar anomalies in the past.

SourceGFZ GeoForschungsZentrum Potsdam, Helmholtz Centre·JournalProceedings of the National Academy of Sciences·DateApr 30, 2018

Farming fish saves land

A new study shows that farming fish can help meet the world's future protein demands while reducing land use, with potential savings of up to 747 million hectares globally. The research highlights the efficiency of aquatic animals in converting feed to biomass for human consumption.

SourceUniversity of California - Santa Barbara·JournalProceedings of the National Academy of Sciences·DateApr 30, 2018

The rhythms of the night?

A new study found that intermittent bright light exposure at night can cause significant phase shifts in the body's internal clock, but not necessarily melatonin suppression. This challenges the common assumption that one can be used as a proxy measure for the other.

SourceThe Physiological Society·JournalThe Journal of Physiology·DateApr 29, 2018

If pigs could fly

A recent study by University of Guam researcher Ann Marie Gawel suggests that feral pigs might be an unlikely forest ally in regenerating native plant species on the island. Pigs were found to have a positive impact on seed dispersal in limestone karst forests, whereas deer had negative effects.

SourceUniversity of Guam·JournalRoyal Society Open Science·DateApr 29, 2018

A powerful laser breakthrough

A new technique enhances power output of single-mode lasers, enabling terahertz spectroscopy applications. The technique introduces a hybrid second- and fourth-order Bragg grating in the laser's optical cavity.

SourceLehigh University·JournalNature Communications·DateApr 27, 2018

Researchers map the potential spread of yellow fever virus to cities around the world

A new study led by St. Michael's Hospital maps the potential risk of yellow fever virus spread to cities around the world, analyzing travel patterns and environmental conditions. The research highlights the need for countries to reexamine their policies to prevent yellow fever virus importation, protect travelers, and prevent exportation.

SourceSt. Michael's Hospital·JournalBulletin of the World Health Organization·DateApr 27, 2018

First ever risk tool predicts readmission rates for patients after undergoing TAVR

A new study developed a novel risk tool to predict 30-day readmission rates in patients undergoing transcatheter aortic valve replacement (TAVR). The tool calculates a score based on several variables, including chronic kidney disease, anemia, and discharge disposition, with a c-statistic of 0.63.

SourceSociety for Cardiovascular Angiography and Interventions·JournalCatheterization and Cardiovascular Interventions·DateApr 27, 2018

Culprit vessel-only strategy has lower mortality rates compared to routine MVI

A contemporary real-world analysis of culprit vessel-only intervention (CVI) versus multivessel intervention (MVI) in patients with acute myocardial infarction (AMI) and cardiogenic shock (CS) found lower mortality rates for CVI. The study, presented at the Society for Cardiovascular Angiography and Interventions 2018 Scientific Sessio...

SourceSociety for Cardiovascular Angiography and Interventions·JournalCatheterization and Cardiovascular Interventions·DateApr 27, 2018

Parents may help prep kids for healthier, less violent relationships

Researchers found that positive family climate and effective parenting strategies during adolescence can lead to better problem-solving skills and less-violent romantic relationships as young adults. Positive engagement with parents is also associated with feelings of love and connection in young adult relationships.

SourcePenn State·JournalJournal of Youth and Adolescence·DateApr 27, 2018

Contemporary update to PROGRESS-CTO International Registry shows successful outcomes

A significant update to the PROGRESS-CTO International Registry reveals successful outcomes of Chronic Total Occlusion Percutaneous Intervention (CTO PCI) for over 3,000 patients. The study found high success rates with acceptable complications, supporting its use in experienced centers.

SourceSociety for Cardiovascular Angiography and Interventions·JournalCatheterization and Cardiovascular Interventions·DateApr 27, 2018

Why cereal is better

Researchers discovered that two amino acids in the guard cells' protein SLAC1 enable grasses to quickly close their stomata and prevent water loss. This mechanism allows grasses to adapt better to drought, making them more suitable for water-scarce regions.

SourceUniversity of Würzburg·JournalCurrent Biology·DateApr 27, 2018

A shape to remember

Kyoto University scientists have developed a shape-memory effect in porous materials, which can change and retain their shapes. The new material, with a porosity of 46%, has been shown to adsorb carbon dioxide and retain its shape after multiple cycles.

SourceKyoto University·JournalScience Advances·DateApr 27, 2018