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Science News Archive November 2020 - Page 21


Page 21 of 43

TAVR is dominant form of aortic valve replacement, outcomes steadily improving in the US

Since its 2011 approval, TAVR has become the leading choice for aortic valve replacement in the US, with increasing volumes and improved outcomes. The STS/ACC TVT Registry data show significant reductions in mortality, stroke rates, and length of stay, while pacemaker implantation rates remain stable.

SourceAmerican College of Cardiology·JournalJournal of the American College of Cardiology·DateNov 16, 2020

Key source of memories

A team of scientists has identified a region of the thalamus as a key source of top-down information, which is essential for processing sensory signals in the context of past experiences. This discovery sheds light on how the brain encodes and retrieves memories, particularly in cases of brain disorders such as autism and schizophrenia.

SourceUniversity of Freiburg·JournalScience·DateNov 16, 2020

New Fred Hutch-led trial shows no benefits of dairy foods for blood sugar regulation

A new study published in the American Journal of Clinical Nutrition found that consuming dairy foods did not directly affect blood sugar levels in people with metabolic syndrome. However, participants on a full-fat dairy diet gained weight and those on low-fat or full-fat diets experienced reduced insulin sensitivity.

SourceFred Hutchinson Cancer Center·JournalAmerican Journal of Clinical Nutrition·DateNov 16, 2020

Reversal of glial scar tissue back to neuronal tissue through neuroregenerative gene therapy

Researchers have developed a novel neuroregenerative gene therapy that converts glial cells back into functional neurons, reversing glial scar tissue. This treatment also promotes brain recovery in mouse models of ischemic stroke and Huntington's disease, offering a promising solution to the glial scar problem.

Could robots for sex, friendship improve our aging society?

A new paper argues that robots designed for older adults can provide essential human values like social interaction, emotional fulfillment, and bodily integrity. The author suggests that Western cultures' narrow view of sex as lust needs to be challenged, and that robots can enable people to experience physical affection and self-respect.

SourceUniversity of Washington School of Medicine/UW Medicine·JournalJournal of Medical Ethics·DateNov 16, 2020

Study shows geographic shift in U.S. social mobility

A recent study on US social mobility found that regions have shifted unevenly over the last century, with some areas scoring high in social mobility while others score low. The study, led by Arizona State University's Dylan Connor, tracked 2 million children from childhood to adulthood and found that urban Midwest areas have struggled ...

SourceArizona State University·JournalProceedings of the National Academy of Sciences·DateNov 16, 2020

Cosmic flashes come in all different sizes

Scientists have confirmed that magnetars, extreme stars with strong magnetic fields, generate fast radio bursts (FRBs). The discoveries were made using four European radio telescopes and provide new insights into the origins of FRBs. The research aims to pin down how these extreme stars create brief blasts of radiation.

SourceChalmers University of Technology·JournalNature Astronomy·DateNov 16, 2020

'Alarming' COVID-19 study shows 80% of respondents report significant symptoms of depression

A national survey of over 1,000 young US adults finds alarming levels of loneliness associated with significant mental health issues, including depression, anxiety, substance use, and addiction. The study emphasizes the importance of providing access to psychological help and promoting social connectedness to address these problems.

SourceTaylor & Francis Group·JournalJournal of Psychoactive Drugs·DateNov 16, 2020

Scientists map and forecast apex predator populations at unprecedented scale

Researchers developed statistical methods to track and forecast wildlife populations across borders, revealing detailed dynamics of entire populations across large spatial scales. The study's findings provide new insights into wildlife management and conservation efforts for species like brown bears, grey wolves, and wolverines.

SourceNorwegian University of Life Sciences·JournalProceedings of the National Academy of Sciences·DateNov 16, 2020

Better than money? In-kind payments incentivize farmers to conserve agrobiodiversity

A new study found that in-kind payments successfully encouraged farmers to cultivate and conserve rare crops and varieties. The innovative payment scheme, known as Payment for Agrobiodiversity Conservation Services (PACS), has been well-received by farmers and policymakers in four Latin American countries.

Analysis paves way for more sensitive quantum sensors

Theoretical researchers at the University of Chicago have found a way to make quantum sensors exponentially more sensitive by harnessing a unique physics phenomenon. This breakthrough could lead to improved detection and diagnosis of diseases, prediction of natural disasters, and exploration without digging.

SourceUniversity of Chicago·JournalNature Communications·DateNov 16, 2020

Boosted signal

Researchers at UC Santa Barbara have developed a new approach to boost NMR signal detection in previously 'invisible' regions. By using dynamic nuclear polarization with transition metal vanadium, they have created hyperfine DNP spectroscopy, which offers a broader frequency range and can analyze local chemistry around transition metals.

Study identifies patients with lung cancer most likely to respond to immunotherapy

Researchers found patients with a particular type of human leukocyte antigen (HLA) B44 were more likely to benefit from immunotherapy in melanoma but not non-small cell lung cancer. The study identified mutations driving the different responses, paving the way for better patient stratification and potential therapy design.

Randomized trial of laparoscopic, open liver surgery found no difference in long-term survival ou

A randomized controlled trial comparing laparoscopic and open liver surgery for patients with resectable colorectal liver metastases found no significant difference in 5-year survival outcomes. The study suggests that the laparoscopic approach may provide better short-term outcomes but does not jeopardize oncologic outcomes.

SourceAmerican College of Physicians·JournalAnnals of Internal Medicine·DateNov 16, 2020

New drug can improve fertility in women with reproductive health problems

A new study finds that a drug called MVT-602 can improve fertility in women with reproductive health problems by targeting the kisspeptin hormone system. The drug's longer duration of action allows for less frequent dosing, offering improved treatment options for conditions such as polycystic ovary syndrome and hypothalamic amenorrhea.

SourceImperial College London·JournalJournal of Clinical Investigation·DateNov 16, 2020

New method brings physics to deep learning to better simulate turbulence

Researchers at the University of Illinois developed a new method that combines machine learning and physics to simulate turbulent flow, allowing for more accurate predictions in aerospace engineering. This method has the potential to improve design efficiency and reduce costs in industries such as air travel and spacecraft development.

SourceUniversity of Illinois Grainger College of Engineering·JournalJournal of Computational Physics·DateNov 16, 2020