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Science News Archive June 2019 - Page 8


Page 8 of 41

Microscopic glass blowing used to make tiny optical lenses

Scientists create miniature cone-shaped lenses, called axicons, using a new micro glass blowing method. The technique enables the production of robust and low-cost glass axicons with high performance vacuum packaging, suitable for integration into biomedical imaging instruments like optical coherence tomography.

SourceOptica·JournalOptics Letters·DateJun 25, 2019

Kessler researchers explore social cognitive deficits in progressive multiple sclerosis

A recent study by Kessler Foundation researchers found evidence for differential effects of progressive MS on cognitive and affective Theory of Mind. The study used Virtual Assessment of Mentalising Ability (VAMA) to measure Theory of Mind in individuals with progressive MS, who showed poorer performance on the cognitive ToM subtest co...

SourceKessler Foundation·JournalJournal of the International Neuropsychological Society·DateJun 25, 2019

New osteoporosis therapy's dual effects on bone tissue

Romosozumab increases serum markers of bone formation and decreases those of bone breakdown, leading to improved bone mass and microarchitecture. The therapy also reduces the risk of bone fractures in postmenopausal women with osteoporosis.

SourceWiley·JournalJournal of Bone and Mineral Research·DateJun 25, 2019

Study finds link between hypertension and air pollution

A new study published in the Journal of Public Health suggests a significant link between long-term exposure to ambient air pollution and an increased risk of developing hypertension. The researchers also found associations between air pollution levels and reduced high-density lipoprotein cholesterol, higher triglyceride levels, and ob...

SourceOxford University Press USA·JournalJournal of Public Health·DateJun 25, 2019

No cell is an island

A study published in eLife found that doublet immune cells are more common than previously thought and play a crucial role in disease progression. The research reveals that these cell complexes can serve as biomarkers for immune perturbations, potentially allowing for early detection of diseases like dengue fever.

Analyzing the tweets of Republicans and Democrats

Researchers found that Republicans tend to focus on breaking news reports and event-specific facts, while Democrats discuss potential policy changes. The study also reveals a stark contrast in emotions expressed by each group, with Republicans showing more fear and disgust, while Democrats express sadness and calls for action.

Shorter rotations in intensive care units mitigate burnout among physicians

A Penn Medicine pilot study finds that shorter intensive care unit rotations can significantly reduce burnout rates by as much as 41% while increasing job fulfillment. The study suggests that organizations can implement strategies like truncated staffing rotations to mitigate burnout and improve physician well-being.

SourceUniversity of Pennsylvania School of Medicine·JournalAmerican Journal of Respiratory and Critical Care Medicine·DateJun 25, 2019

First in vivo proof-of-concept in Steinert's myotonic dystrophy

Researchers have successfully developed and tested a gene therapy approach using CRISPR-Cas9 technology to treat Steinert's myotonic dystrophy, a devastating neuromuscular disease. The study showed that the expanded CTG triplet repeat in the DMPK gene was 'cut' and removed from the gene, reducing toxic RNA aggregates in muscle cells.

SourceAFM-Téléthon·JournalMolecular Therapy·DateJun 25, 2019

Zero-calorie sweeteners on trial again

Researchers found that maternal exposure to sucralose and acesulfame-K during pregnancy and lactation led to altered intestinal flora and liver toxicity in mouse pups. The study suggests that artificial sweeteners may be safe for adults when used in moderation, but not a substitute for sugar.

SourceFrontiers·JournalFrontiers in Microbiology·DateJun 25, 2019

National trash: Reducing waste produced in US national parks

US National Parks produce a staggering 100 million pounds of trash each year, with managers seeking ways to divert recyclable materials and reduce overall waste. Key findings from recent research include the importance of moral norms and perceived difficulty in influencing visitor behavior.

SourceS.J. & Jessie E. Quinney College of Natural Resources, Utah State University·JournalApplied Environmental Education & Communication·DateJun 25, 2019

Elevated air pollution could diminish health benefits of living in walkable communities

A study led by St. Michael's Hospital found that living in walkable neighborhoods can have diminishing health benefits due to increased exposure to traffic-related air pollution. The research, based on nearly 2.5 million adults from Ontario municipalities, challenges the idea that walkability always improves overall health and well-being.

SourceSt. Michael's Hospital·JournalEnvironment International·DateJun 25, 2019

Changes in blood flow tell heart cells to regenerate

A study in eLife reveals that altered blood flow after heart injury triggers a signalling cascade that promotes cell growth and heart tissue regeneration in zebrafish. The findings provide insights into signalling pathways important for heart regeneration in mammals, including the potential to repair the human heart.

SourceeLife·DateJun 25, 2019

Medicare Advantage beneficiaries run higher risk of readmission compared with traditional Medicare

Researchers found that Medicare Advantage beneficiaries had higher 30-day risk-adjusted readmission rates than traditional Medicare beneficiaries for three common medical conditions. Despite previous studies suggesting better post-acute care outcomes for Medicare Advantage enrollees, the study found no evidence of improved readmission ...

SourceAmerican College of Physicians·JournalAnnals of Internal Medicine·DateJun 25, 2019

Radioactive tadpoles reveal contamination clues

Tadpoles from an uncontaminated wetland were placed in a canal with releases of radiocesium from a nearby reactor, accumulating the contaminant at different rates. The study found that bullfrog tadpoles reached maximum threshold levels between 11-14 days, which is faster than previously studied species like waterfowl and fish.

SourceUniversity of Georgia·JournalJournal of Environmental Radioactivity·DateJun 25, 2019

Massachusetts General study identifies pathway linking socioeconomic status to cardiovascular risk

A new study by Massachusetts General Hospital identifies a biological pathway linking socioeconomic status to cardiovascular risk. The pathway involves brain stress centers, immune cell production, and arterial inflammation, which can be targeted by lifestyle approaches such as exercise, meditation, and statins.

SourceMassachusetts General Hospital·JournalJournal of the American College of Cardiology·DateJun 25, 2019

Playing 'tag': Tracking movement of young oysters

Researchers use harmless fluorescent dye to track oyster larval movements in Mobile Bay, finding larvae are transported from lower bay to Mississippi Sound via freshwater flow paths. This approach can be applied to other marine species, aiding restoration and management of larval transport pathways globally.

SourceDauphin Island Sea Lab·JournalEstuaries and Coasts·DateJun 24, 2019