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Science News Archive 2017 - Page 439


Page 439 of 461

TSRI scientists create first stable semisynthetic organism

Researchers at Scripps Research Institute (TSRI) have created the first stable semisynthetic organism that can hold onto synthetic base pair X and Y indefinitely as it divides. This breakthrough uses a combination of genetic tools, including CRISPR-Cas9, to enable the organism to stably maintain the new base pairs.

SourceScripps Research Institute·JournalProceedings of the National Academy of Sciences·DateJan 23, 2017

Low-cost therapy produces long-lasting improvements for stroke survivors

Researchers at UEA and Glasgow found that a low-cost, home-based therapy produces marked improvements in visual neglect, even after four months. Patients who received the therapy showed significant gains in finding items on their neglected side of space and experienced long-lasting improvements in daily activities.

SourceUniversity of East Anglia·JournalNeuropsychological Rehabilitation·DateJan 23, 2017

On target: UNC researcher arms platelets to deliver cancer immunotherapy

Researchers at UNC have engineered platelets to carry cancer-fighting antibodies, allowing them to target and kill microtumors before they can grow or spread. This innovative approach has shown promising results in animal studies, potentially offering a new hope for patients with recurring cancer after surgery.

SourceUniversity of North Carolina Health Care·JournalNature Biomedical Engineering·DateJan 23, 2017

Archaeologists uncover new clues to Maya collapse

Researchers have developed a high-precision chronology that sheds new light on the Maya collapse patterns, with both Classic and Preclassic collapses following similar trajectories.

SourceUniversity of Arizona·JournalProceedings of the National Academy of Sciences·DateJan 23, 2017

Scientists discover large extinct otter

A new species of extinct otter, Siamogale melilutra, has been discovered in China with a body size comparable to that of a wolf. The discovery provides insights into the evolutionary history and functional morphology of this ancient lineage.

SourceCleveland Museum of Natural History·JournalJournal of Systematic Palaeontology·DateJan 23, 2017

Wildlife-snaring crisis in Asian forests

A recent study in Science highlights a devastating crisis in Asian forests due to snaring, causing unprecedented extinctions. The authors recommend managing this issue by regulating homemade snares and preventing 'empty forests', emphasizing the urgent need for conservation action.

SourceWildlife Conservation Society·JournalScience·DateJan 23, 2017

Cervical cancer death rates higher among older and black women

New research suggests cervical cancer death rates are higher among older and black women in the US, particularly due to exclusion of women who have had hysterectomies. This discrepancy highlights the need for better screening and treatment options for these groups.

SourceJohns Hopkins Bloomberg School of Public Health·JournalCancer·DateJan 23, 2017

Wasps, ants, and Ani DiFranco

A University of California, Riverside graduate student has discovered several new species of wasps that feed on ants, including one named after musician Ani DiFranco. These wasps have a unique association with extrafloral nectaries and can potentially control invasive ant populations.

SourceUniversity of California - Riverside·JournalSystematic Entomology·DateJan 23, 2017

Kisspeptin hormone enhances brain response to sexual and emotional images

Research by Waljit Dhillo at Imperial College London discovered that kisspeptin stimulates limbic brain areas associated with mood and emotion, influencing reproductive behavior. Kisspeptin treatment also enhanced brain activity during assessments of reward, drive, and mood in healthy heterosexual men.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateJan 23, 2017

New PET imaging technique may help monitor neurological disease progression

Researchers developed a new PET imaging technique that can detect changes in olfactory neuron populations, which are sensitive to neurodevelopmental and neurodegenerative diseases. The technique uses GV1-57 radiotracer to quantify neuron generation and degeneration, providing insights into disease progression.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateJan 23, 2017

80-million-year-old dinosaur collagen confirmed

Scientists from North Carolina State University have successfully isolated and sequenced additional collagen peptides from an 80-million-year-old Brachylophosaurus specimen, lending further support to the idea that organic molecules can persist in fossils for tens of millions of years. The study demonstrates that peptide sequences can ...

SourceNorth Carolina State University·JournalJournal of Proteome Research·DateJan 23, 2017

TCGA study identifies genomic features of cervical cancer

Researchers identified novel genomic characteristics of cervical cancer, including cell signaling pathways and human papillomavirus (HPV) infection. The study also found amplification of genes involved in immune responses and potential therapeutic targets.

SourceNIH/National Cancer Institute·JournalNature·DateJan 23, 2017

New technique identifies micropollutants in New York waterways

Researchers at Cornell University developed a new technique using high-resolution mass spectrometry to detect 112 micropollutants in New York state waterways. The approach identified eight common chemicals in every sample and dozens more in most samples, revealing widespread contamination.

SourceCornell University·DateJan 23, 2017

Not just funny: Satirical news has serious political effects

A study found that satirical news reinforces pre-existing attitudes as much as serious news, with liberal views strengthened by liberal satire. However, conservative views were undermined by conservative satire, affecting political efficacy differently for Democrats and Republicans.

SourceOhio State University·JournalJournal of Communication·DateJan 23, 2017

Immune defense without collateral damage

A team of researchers from the University of Basel has clarified the role of the enzyme MPO in fighting infections. They found that MPO produces a highly aggressive acid that kills pathogens without damaging surrounding tissue, providing new approaches for immunity strengthening therapies.

SourceUniversity of Basel·JournalNature Microbiology·DateJan 23, 2017

How nicotine acts on the brains of schizophrenic patients

Scientists used a mouse model to study nicotine's impact on brain cells involved in schizophrenia. Administering nicotine restored normal activity in prefrontal cortex neurons, similar to observed deficits in patients with psychiatric disorders.

SourceInstitut Pasteur·JournalNature Medicine·DateJan 23, 2017

A new index for the diagnosis of non-alcoholic fatty liver disease

Researchers developed an improved Fatty Liver Index (FLI) to predict non-alcoholic fatty liver disease with high accuracy. The new index includes parameters such as age, waist circumference, and triglyceride levels, as well as a gene variant for fatty liver, to provide more precise diagnosis and risk assessment.

SourceDeutsches Zentrum fuer Diabetesforschung DZD·JournalDiabetes & Metabolism·DateJan 23, 2017

Penn research describes missing step in how cells move their cargo

A study led by Wei Guo has identified Sec3 as a key activator that speeds up the binding of SNAREs, allowing vesicles to fuse with the plasma membrane. The researchers used a combination of molecular biology and crystallography to understand the mechanism of exocytosis and have potential implications for endocrinology, neurotransmissio...

SourceUniversity of Pennsylvania·JournalNature Communications·DateJan 23, 2017

U-M researchers discover what makes drug for ulcerative colitis tick

Researchers identified that mesalamine, a medication for ulcerative colitis, works by targeting the bacterial stress response system and reducing polyphosphate production. This study reveals potential new insights into how mesalamine treatment improves the gut microbiome.

SourceUniversity of Michigan·JournalNature Microbiology·DateJan 23, 2017

Research leads to new treatment recommendations for a high-risk pediatric leukemia

Researchers at St. Jude Children's Research Hospital have developed new diagnostic screening and treatment recommendations for high-risk pediatric patients with acute megakaryoblastic leukemia (AMKL). The study identified three genetic alterations that can predict treatment success, enabling personalized medicine approaches.

SourceSt. Jude Children's Research Hospital·JournalNature Genetics·DateJan 23, 2017

Regulating 'gasotransmitters' could improve care for sleep apnea

Researchers found that blocking the enzyme responsible for hydrogen sulfide production can prevent or reduce apneas during sleep. This approach has potential to help people with multiple forms of sleep-disordered breathing, including obstructive and central apneas.

SourceUniversity of Chicago Medical Center·JournalProceedings of the National Academy of Sciences·DateJan 23, 2017

A gene's journey from covert to celebrated

Scientists at the University of North Carolina have discovered a promising new avenue for fighting gastrointestinal cancers by unmasking the previously misunderstood gene Gpr182. The study reveals that Gpr182 could be a key regulator of intestinal stem cell proliferation, and its protein code for a potential drug target.

SourceUniversity of North Carolina Health Care·JournalJournal of Clinical Investigation·DateJan 23, 2017

Cervical cancer mortality rates may be underestimated

Analysis of US data from 2002 to 2012 reveals significantly higher cervical cancer mortality rates among black women (77% higher) and white women (47% higher), with disparities increasing over time. Black women's corrected mortality rate is 10.1 per 100,000 women, compared to 5.7 for uncorrected rates.

SourceWiley·JournalCancer·DateJan 23, 2017

Study suggests that yoga and exercise fail to improve sleep in midlife women

A new study suggests that yoga and aerobic exercise interventions did not significantly reduce objectively measured sleep disturbances among midlife women experiencing hot flashes. Despite the lack of improvement in sleep quality, women in the study still experienced disturbed sleep at night.

SourceAmerican Academy of Sleep Medicine·JournalJournal of Clinical Sleep Medicine·DateJan 23, 2017

Using simulation tools to optimize soft robotic systems

Researchers use simulation tools to analyze and optimize soft robotic systems, increasing their utility through predictive approaches and thermodynamic perspectives. The study highlights the importance of considering machine design and performance in achieving widespread adoption.

SourceMary Ann Liebert, Inc./Genetic Engineering News·JournalSoft Robotics·DateJan 23, 2017

Transplanted neurons incorporated into a stroke-injured rat brain

Researchers at Lund University successfully incorporated transplanted neurons into a stroke-injured rat brain, showing they formed normal connections with the host brain. The study used human skin cells reprogrammed to become healthy neurons and demonstrated functionality in response to touch.

SourceLund University·JournalBrain·DateJan 23, 2017

Reduction of the most common cause of maternal death worldwide

Researchers with the California Maternal Quality Care Collaborative present a study showing that a state-wide perinatal collaborative can significantly reduce severe maternal morbidity from hemorrhage. The project involved 99 hospitals and resulted in a 21% reduction in severe hemorrhage after one year, with smaller hospitals showing t...

SourceSociety for Maternal-Fetal Medicine·DateJan 23, 2017

Jet lag impairs performance of Major League Baseball players

Researchers found that eastward travel had significant negative effects on MLB players' performance, particularly in base running and home runs allowed. The study's findings suggest that jet lag can have a substantial impact on team performance, even erasing the traditional home field advantage.

SourceNorthwestern University·JournalProceedings of the National Academy of Sciences·DateJan 23, 2017

We need to talk about school start times

A study by McGill University researchers found that students from schools starting earlier slept less and were more likely to be tired in the morning. Delaying school start times could help Canadian teenagers sleep better and give them a better chance for success.

SourceMcGill University·JournalJournal of Sleep Research·DateJan 23, 2017

Melting solid below the freezing point

Scientists discover a new phenomenon of metastability in liquids, creating a metastable liquid directly by decompression below the melting point. The results could be important for developing new materials and understanding planetary interiors.

SourceCarnegie Institution for Science·JournalNature Communications·DateJan 23, 2017

Positive outcomes after obesity surgery in adolescents

A new study reveals that obesity surgery has been shown to be as effective for teenagers as for adults, resulting in significant weight loss. However, the study also highlights potential complications, including bowel obstruction and gallstones, which require further monitoring and support.

SourceUniversity of Gothenburg·JournalThe Lancet Diabetes & Endocrinology·DateJan 23, 2017

Crop achilles' heel costs farmers 10 percent of potential yield

Scientifics found that lower leaves of corn and Miscanthus are less efficient in low light, leading to a 10% loss in potential yield. This 'Achilles' heel' likely applies to other C4 crops, such as sugarcane and sorghum.

SourceCarl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign·JournalJournal of Experimental Botany·DateJan 23, 2017

Novel radiotracer measures olfactory neurons in animal models

Researchers have developed a novel PET radiatracer called Neuroflux to quantify olfactory sensory neurons, improving measurements of olfactory health. The study found decreased signals in young animal models before cognitive symptoms onset, demonstrating the vulnerability of olfactory neurons.

SourceMassachusetts General Hospital·JournalJournal of Clinical Investigation·DateJan 23, 2017

Mapping the migration of house shrews

Researchers analyzed DNA sequences from 169 house shrews to uncover their genetic origins and migration routes. The study suggests that people traded on a larger scale than previously thought, with species from Asia and Africa showing similar genetic traits despite geographical distance.

SourceHokkaido University·JournalMammal Study·DateJan 23, 2017

New tools developed to help clinicians predict risk of cardiovascular disease

A new study provides powerful new tools for clinicians to predict cardiovascular disease (CVD) risk globally, especially in resource-poor settings. The researchers developed two models: one using lab-based blood measurements and another that can be used without bloodwork, improving CVD risk prediction in low- and middle-income countries.

SourceHarvard T.H. Chan School of Public Health·JournalThe Lancet Diabetes & Endocrinology·DateJan 23, 2017

Synthetic nanoparticles achieve the complexity of protein molecules

Carnegie Mellon scientists develop synthetic gold nanoparticles with hierarchical structures similar to proteins, revealing mechanisms of self-assembly and potential applications in drug delivery and electronics. The study achieves the complexity of protein molecules through atomic-level understanding.

SourceCarnegie Mellon University·JournalScience·DateJan 23, 2017

Monash awarded grant to lead global slum revitalization research

Monash University has been awarded a USD 9.7 million grant to lead a five-year research project on transforming water infrastructure and sanitation practices in urban slums globally. The project aims to improve human health and well-being in informal settlements, with potential applications for new water management policies worldwide.

SourceMonash University·DateJan 23, 2017

Medical assistance in dying will not increase health care costs in Canada

A new study found that providing medical assistance in dying in Canada may not increase healthcare costs and could even reduce spending by up to $138.8 million. The researchers used data from the Netherlands and Belgium, where medically assisted dying is legal, to estimate the impact on Canadian healthcare spending.

SourceCanadian Medical Association Journal·JournalCanadian Medical Association Journal·DateJan 23, 2017

NYC toddlers exposed to potentially harmful flame retardants

A study by Columbia University's Mailman School of Public Health finds that all NYC toddlers studied had flame retardants on their hands, with mothers having lower levels. The researchers detected a higher concentration of flame retardants in toddler hand wipes compared to their mothers.

SourceColumbia University's Mailman School of Public Health·JournalEmerging Contaminants·DateJan 23, 2017

Trees supplement income for rural farmers in Africa

A University of Illinois study found that about one-third of rural farmers across five African countries have trees on their farms, contributing 17% to their annual household income. Trees can act as biodiversity corridors, linking forests and providing wildlife habitat, while also offering income potential to poor farmers.

SourceUniversity of Illinois College of Agricultural, Consumer and Environmental Sciences·JournalForest Policy and Economics·DateJan 23, 2017

E-cigarettes are expanding tobacco product use among youth

A new study finds that e-cigarettes are expanding tobacco product use among youth, particularly those at low risk of starting with cigarettes. The researchers analyzed survey data from over 140,000 middle and high school students and found no evidence that e-cigarettes have caused a decline in youth smoking

SourceUniversity of California - San Francisco·JournalPEDIATRICS·DateJan 23, 2017

FSU scientist's findings on carbon cycle feed climate research

A Florida State University researcher investigated how carbon moves from the ocean surface to greater depths and remains there for hundreds of years. The study found that certain areas of the sea, particularly fronts where temperature or salinity changes, act as giant conduits moving carbon to deeper depths.

SourceFlorida State University·JournalProceedings of the National Academy of Sciences·DateJan 23, 2017

Breast cancer drugs stop working when tumors 'make their own fuel'

Researchers found that breast cancer tumors evolve to produce their own estrogen supply, making treatments like aromatase inhibitors ineffective. The study, published in Nature Genetics, aims to increase treatment options for patients whose cancer has returned and spread.

SourceImperial College London·JournalNature Genetics·DateJan 23, 2017

Forests 'held their breath' during global warming hiatus, research shows

New research shows that forests 'held their breath' during the recent global warming slowdown, releasing less carbon back into the atmosphere. During this period of slower warming, worldwide forests took up more carbon dioxide through photosynthesis and stored it in the natural environment.

SourceUniversity of Exeter·JournalNature Climate Change·DateJan 23, 2017

Study reveals new genetic mechanism driving breast cancer

Researchers found 33 places in breast cancer genomes where tandem duplications were most often found, leading to further cancerous changes. These 'hotspots' may create new driver mutations, making tumours more aggressive and potentially responsive to different treatments.

SourceWellcome Trust Sanger Institute·JournalNature Genetics·DateJan 23, 2017

Evaluation of recombinant antithrombin vs. placebo in preterm preeclampsia

A randomized double-blind placebo controlled trial investigated the effects of recombinant antithrombin on gestation duration and neonatal morbidity in expectantly managed patients with early onset preeclampsia. No improvement was found in outcomes, with no reported safety events related to Recombinant Antithrombin.

SourceSociety for Maternal-Fetal Medicine·DateJan 23, 2017