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Science News Archive 2017 - Page 436


Page 436 of 461

UC San Diego biologists unlock code regulating most human genes

Researchers have discovered a critical DNA sequence code, known as the human Initiator, that regulates over half of all human genes. This breakthrough provides insight into gene regulation and may lead to new discoveries in understanding how human genes are turned on and off.

SourceUniversity of California - San Diego·JournalGenes & Development·DateJan 24, 2017

Prized fossil find illuminates the lives of lizards in the Age of Dinosaurs

A new species of lizard, Magnuviator ovimonsensis, discovered in Montana's Egg Mountain fossil site, reveals significant gaps in understanding lizard diversity during the Cretaceous Period. The nearly complete fossils show that this ancient offshoot of iguanian lizards lived in a semi-arid environment with dinosaurs and other creatures.

SourceUniversity of Washington·DateJan 24, 2017

When 'golden opportunity' to bribe arises, it's hard to pass up

A new study suggests that corrupt behavior can emerge from a sudden 'golden opportunity' rather than gradual processes. Researchers found participants were more likely to bribe when presented with an abrupt steep-cliff option compared to a gradual slippery-slope option.

SourceAssociation for Psychological Science·JournalPsychological Science·DateJan 24, 2017

Half of breast cancer patients experience severe side effects

A study found that nearly half of women treated for early stage breast cancer experienced at least one severe or very severe side effect from their treatment. The most common side effects were pain, skin irritation, and constipation, with Latina women being 30% more likely to report a severe side effect.

SourceMichigan Medicine - University of Michigan·JournalCancer·DateJan 24, 2017

Brain study shows impulsivity may weigh down some individuals

Researchers at the Center for BrainHealth found a strong link between impulsive personality and high body mass index (BMI). Individuals with an impulsive personality were more likely to exhibit altered neural function, which may contribute to weight gain. The study suggests that addressing impulsive personality traits could be key to d...

SourceCenter for BrainHealth·JournalObesity·DateJan 24, 2017

Ubiquitous but overlooked, fluid is a source of muscle tension

Researchers found that the fluid-filled nature of muscle fibers plays a role in creating tension when stretching. The study used a model and experiments with real bullfrog muscle to demonstrate the mechanical properties of fluid in muscle fibers. This discovery argues for accounting for fluid in models of muscle mechanics.

SourceBrown University·JournalBiology Letters·DateJan 24, 2017

Bursts of methane may have warmed early Mars

Researchers suggest early Mars was warmed by greenhouse effects from methane, carbon dioxide, and hydrogen. This could have supported liquid water on the surface, increasing the chances of finding life. The study's findings provide new insights into Mars' climate and its potential for hosting life.

SourceHarvard John A. Paulson School of Engineering and Applied Sciences·JournalGeophysical Research Letters·DateJan 24, 2017

New tuberculosis therapy could be more potent than current treatments

A new approach to treating tuberculosis could significantly reduce treatment time and improve patient outcomes. Researchers identified an effective four-drug regimen that kills TB bacteria in the lungs and cures mice up to four times faster than current treatments.

SourceUniversity of California - Los Angeles Health Sciences·JournalNature Communications·DateJan 24, 2017

Synthetic chemicals: Ignored agents of global change

A new study finds that research on synthetic chemical pollution is severely lacking, despite its growing presence and impact on ecosystems. The study's authors call for increased funding and collaboration to better understand the environmental effects of these chemicals and mitigate their harm.

SourceCary Institute of Ecosystem Studies·JournalFrontiers in Ecology and the Environment·DateJan 24, 2017

Two who enabled El Niño forecasts win 2017 Vetlesen Prize

Researchers S. George Philander and Mark A. Cane developed a key insight that the Pacific Ocean's weather balance swings seesaw-like between extremes, leading to practical forecasts of El Niño events. Their work enabled institutions worldwide to monitor warning signs for crop planting, disease control, and floods or droughts.

SourceColumbia Climate School·DateJan 24, 2017

Micro spacecraft investigates cometary water mystery

A team of astronomers successfully observed the entire hydrogen coma of comet 67P/Churyumov-Gerasimenko using the LAICA telescope onboard the PROCYON spacecraft. The observations provide a unique opportunity to test coma models and estimate the total amount of water released by the comet per second.

SourceNational Institutes of Natural Sciences·DateJan 24, 2017

Cell disposal faults could contribute to Parkinson's, study finds

A study published in Cell Death and Disease suggests that problems with mitochondria may contribute to Parkinson's disease. The researchers found that faulty waste disposal systems can lead to damaged mitochondria, which produce less energy and cause oxidative stress.

SourceUniversity of Nottingham·JournalCell Death and Disease·DateJan 24, 2017

Mathematical model limits malaria outbreaks

Climate change impacts mosquito life cycle and malaria parasite development, increasing transmission risk in sub-Saharan Africa. A new model predicts disease spread using periodic vector-bias effects, improving accuracy over previous models.

SourceSociety for Industrial and Applied Mathematics·JournalSIAM Journal on Applied Mathematics·DateJan 24, 2017

Biologists identify reproductive 'traffic cop'

Researchers discover FKB-6, a protein that regulates the speed of chromosome pairing in nematodes, ensuring accurate genetic information swap during reproduction. The findings offer new insight into animal fertility and could help understand defects contributing to conditions like Down syndrome.

SourceUniversity of Iowa·JournalJournal of Cell Biology·DateJan 24, 2017

New technique quickly predicts salt marsh vulnerability

A new technique uses remote sensing to assess coastal salt marshes' potential to survive environmental challenges. The UVVR ratio is a good surrogate for labor-intensive field studies, tracking the main destructive processes in marshes.

SourceU.S. Geological Survey·JournalNature Communications·DateJan 24, 2017

Researchers discover BRCA1 gene is key for blood forming stem cells

The study found that the BRCA1 gene is required for the survival of blood forming stem cells, which could explain why patients with BRCA1 mutations do not have an elevated risk for leukemia. The researchers also suggest that these patients may have a tougher time with chemotherapy side effects.

SourceUT Southwestern Medical Center·JournalCell Reports·DateJan 24, 2017

Synthetic chemicals understudied drivers of environmental change

The increasing use of synthetic chemicals is outpacing global environmental changes, with pesticides and pharmaceuticals posing significant threats to human and environmental health. Research on these chemicals has been neglected, despite their impact on ecosystems and the environment.

SourceDuke University·JournalFrontiers in Ecology and the Environment·DateJan 24, 2017

Scientists decipher a mechanism in serious skin infections

Researchers have identified a key mechanism behind the aggressive progression of skin infections caused by Community-Associated MRSA strains. The discovery suggests that modifying the bacterial cell envelope could help prevent such infections.

SourceGerman Center for Infection Research·JournalNature Microbiology·DateJan 24, 2017

Barrier-island migration drives large-scale marsh loss

Research by Virginia Institute of Marine Science reveals rapid landward migration of barrier-island sands leading to significant loss of adjacent saltmarshes. The study estimates that at least 60 acres of back-barrier saltmarsh are consumed annually, with nearly 10% of Virginia's historical acreage lost since 1870.

SourceVirginia Institute of Marine Science·JournalGeology·DateJan 24, 2017

Consumer-use baby monitors have little proven benefit for healthy infants

Pediatric experts warn that consumer-use baby monitors may cause undue alarm to parents and have no evidence of medical benefits for healthy babies. The devices, marketed aggressively to parents, promise peace of mind about their child's cardiorespiratory health but have been shown to be inaccurate and potentially harmful.

SourceChildren's Hospital of Philadelphia·JournalJAMA·DateJan 24, 2017

New insights into the forms of metal-organic frameworks

Researchers developed a novel strategy to synthesize various metal-organic materials, including double-shell hollow MOMs. This approach enables control over particle sizes and shapes, critical for optimizing porous material performance in catalysis, adsorption, and separation processes.

SourceUlsan National Institute of Science and Technology(UNIST)·JournalNature Communications·DateJan 24, 2017

Swarm of underwater robots mimics ocean life

Researchers at Scripps Institution of Oceanography have developed underwater robots that mimic the movement of plankton to study ocean currents and marine life. The robotic plankton, also known as M-AUEs, were deployed in a swarm to capture a three-dimensional view of the interactions between ocean currents and marine life.

SourceUniversity of California - San Diego·JournalNature Communications·DateJan 24, 2017

Prenatal infection may alter brain development via epigenetic changes

A new study published in Biological Psychiatry found that prenatal infection can cause long-term alterations in the programming of the offspring's genome through epigenetic modifications, leading to behavioral abnormalities. The findings suggest that earlier infection may lead to more serious effects on neurodevelopment.

SourceElsevier·JournalBiological Psychiatry·DateJan 24, 2017

HKU and international researchers promote marine fisheries reform in China

A study highlights challenges and opportunities of fishery management in China, promoting institutional reform for sustainable marine resource management. The researchers recommend new institutions, secure fishing access, policy consistency, educational programs, and increased public access to scientific data.

SourceThe University of Hong Kong·JournalProceedings of the National Academy of Sciences·DateJan 24, 2017

Climate change paper studies carbon uptake in ecosystems

A recent study by University of Montana researcher Ashley Ballantyne and former doctoral student William Smith found that land ecosystems take up less carbon during periods of rapid warming and more during periods of slower warming. This slowing-down is attributed to reduced plant respiration, not increased photosynthesis.

SourceThe University of Montana·JournalNature Climate Change·DateJan 24, 2017

African-American veterans in mental health care are not as activated as white veterans

A new study reveals that male and female African-American veterans receiving outpatient mental health services have lower patient activation rates than White veterans. The study also found a weaker relationship between African-American veterans and their mental health providers, leading to significantly lower medication adherence rates.

SourceIndiana University·JournalAdministration and Policy in Mental Health and Mental Health Services Research·DateJan 24, 2017

New approach improves five-year survival for pancreatic cancer patients

A UK-led clinical trial has successfully prolonged survival for pancreatic cancer patients by at least five years using a combination of chemotherapy drugs. The study found that patients who received this treatment had a 29% five-year survival rate compared to 16% for those on standard treatment.

SourceUniversity of Liverpool·JournalThe Lancet·DateJan 24, 2017

Human rotavirus manipulates immune response to maintain infection

Researchers used a laboratory model of the human gut to study how rotavirus evades the immune system. They found that the virus suppresses the production of IFN proteins aimed at controlling its growth, but adding type I IFN can reduce viral replication.

SourceBaylor College of Medicine·JournalProceedings of the National Academy of Sciences·DateJan 24, 2017

Cutting-edge autism science in spotlight at global conference

The 11th Annual Autism Conference will showcase notable research on sex education for teenagers with autism, promoting safety and understanding. The event will also feature studies on complex social play in children with autism and better approaches to measuring outcomes, aiming to improve the lives of individuals with autism.

SourceAssociation for Behavior Analysis International·DateJan 24, 2017

Pope spurs Republicans to shift climate views

A new study led by Cornell University researchers found that exposure to Pope Francis' image heightened moral beliefs about climate change in wide segments of the public, particularly Republicans. For Republicans who saw the pontiff's photo prior to answering questions, 39% agreed that climate change is a moral issue, up from just 30%.

SourceCornell University·JournalClimatic Change·DateJan 24, 2017

Sci-fi holograms a step closer with ANU invention

Researchers from ANU have developed a device that creates complex holographic images in infrared using silicon pillars. This technology has the potential to be used in various applications such as ultra-thin optical devices for cameras and satellites.

SourceAustralian National University·JournalOptica·DateJan 24, 2017

Therapy for abnormal heartbeats may cause brain injury

A study of patients undergoing catheter ablation found a significantly higher rate of brain injury due to embolism among those with left ventricle therapy compared to right ventricle therapy. Brain lesions may also be associated with cognitive decline, highlighting the need for further research and strategies to avoid these lesions.

SourceUniversity of California - San Francisco·JournalCirculation·DateJan 24, 2017

Brain scan before antidepressant therapy may predict response

Researchers found that brain activity patterns, particularly within two networks involved in error detection and interference processing, can predict treatment response. Patients who showed stronger communication between these networks were less likely to benefit from antidepressants.

SourceUniversity of Illinois Chicago·JournalBrain·DateJan 24, 2017

Large pre-ACA Medicaid expansion did not level health disparities in cancer surgery

A study published in the Journal of the American College of Surgeons found that the New York State Medicaid expansion improved access to cancer surgery for the uninsured, but failed to reduce racial disparities. The proportion of minority patients undergoing cancer surgery remained unchanged relative to whites.

SourceGeorgetown University Medical Center·JournalJournal of the American College of Surgeons·DateJan 24, 2017

Can mushrooms help delay or prevent dementia and Alzheimer's disease?

Certain edible mushrooms have been found to contain bioactive compounds with potential neuroprotective effects, enhancing nerve growth in the brain. The study suggests these mushrooms may help reduce or delay the development of age-related neurodegeneration.

SourceMary Ann Liebert, Inc./Genetic Engineering News·JournalJournal of Medicinal Food·DateJan 24, 2017

Little tortoise, big range

The little-known impressed tortoise (Manouria impressa) has expanded its range by 528 miles to northern Myanmar. The species is considered Vulnerable due to unsustainable subsistence harvesting and habitat destruction.

SourceWildlife Conservation Society·JournalAsian Herpetological Research·DateJan 24, 2017

Penn researchers help unravel mysteries of pancreatic cancer's resistance to standard therapies

Blocking inflammation after radiation therapy led to improved survival in a mouse model of pancreatic cancer. The study found that a form of inflammation triggered by the tumor in response to treatment helps keep tumor cells alive, and that blocking this inflammation can slow tumor growth and prolong survival.

SourceUniversity of Pennsylvania School of Medicine·JournalClinical Cancer Research·DateJan 24, 2017

I can see clearly now

Researchers create adaptive lenses made of glycerin and rubber-like membranes to change the focal length, eliminating the need for bifocals or reading glasses. The lenses are controlled by electronics and a battery, allowing users to switch between near and far vision in just 14 milliseconds.

SourceUniversity of Utah·JournalOptics Express·DateJan 24, 2017

Scientists get best view yet of cancer-causing virus HPV

Researchers have discovered new details of the HPV capsid structure using cryo-electron microscopy, shedding light on key characteristics of its outer shell and proteins. This knowledge may lead to preventing the virus from binding to human cells, a crucial step in infection.

SourcePenn State·JournalStructure·DateJan 24, 2017

Super El Nino and the 2015 extreme summer drought over North China

A strong El Niño does not necessarily result in a higher predictability of extreme drought, according to researchers. However, combining low- and high-latitude precursors improves the forecast accuracy of the EU pattern, which favors anomalous northerly conditions over North China.

SourceInstitute of Atmospheric Physics, Chinese Academy of Sciences·JournalScientific Reports·DateJan 24, 2017

Study unveils new way to starve tumors to death

Researchers have discovered a common weak point in cancer cell metabolism, allowing them to identify drugs that block backup fuel supply routes. This strategy has shown promise against many hard-to-treat cancers, including sarcomas, and may lead to more effective treatments with fewer side effects.

SourceWashU Medicine·JournalCell Reports·DateJan 24, 2017

Researchers report new understanding of global warming

Researchers have discovered a new explanation for climate change using long-term variations of the Lorenz energy cycle, a complex formula describing atmospheric interaction. The study found that Earth's global atmosphere is increasing in efficiency as a heat engine, leading to more potential energy converted to kinetic energy and great...

SourceUniversity of Houston·JournalNature Communications·DateJan 24, 2017