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Science News for August 2, 2018


Hearing class

A new study by Harvard Medical School researchers identifies three molecularly distinct subtypes of neurons responsible for transmitting information from the inner ear to the brain. These subtypes are selectively lost in aging mice and do not emerge properly in deaf-mouse models, suggesting a critical role in age-related hearing loss.

SourceHarvard Medical School·JournalCell·DateAug 2, 2018

New light shed on the people who built Stonehenge

A University of Oxford study suggests that some people buried at Stonehenge had moved with and transported bluestones from the Preseli Mountains in west Wales. The research combined radiocarbon-dating with new developments in archaeological analysis to investigate the lives of those buried at the iconic monument.

SourceUniversity of Oxford·JournalScientific Reports·DateAug 2, 2018

Why weight loss produces remission of type 2 diabetes in some patients

A recent study found that nearly half of individuals with type 2 diabetes achieved remission after a weight-loss intervention. The research suggests that substantial weight loss at diagnosis can rescue beta cells and reverse the condition. However, only those who experienced early and sustained improvement in beta-cell function were ab...

SourceCell Press·JournalCell Metabolism·DateAug 2, 2018

A kernel of promise in popcorn-powered robots

Researchers at Cornell University have developed a novel substance that can be used to power inexpensive robotic devices, enabling them to grip, expand or change rigidity. The study's findings suggest that popcorn could be used to create miniature jumping robots and edible devices for medical procedures.

New lung cell type discovered

A new type of airway cell, pulmonary ionocytes, has been found to express high levels of CFTR, a protein mutated in cystic fibrosis. This discovery provides promising targets for future therapeutic strategies against the disease.

SourceHarvard Medical School·JournalNature·DateAug 2, 2018

World experts target guidance on managing dementia symptoms

New research suggests that non-drug approaches should be prioritised in treating agitation in people with Alzheimer's disease, ranking assessment and management of underlying causes as the top treatment. Non-pharmacological treatments such as person-centred care and tailored activity programmes are also recommended for managing symptom...

SourceUniversity of Exeter·JournalInternational Psychogeriatrics·DateAug 2, 2018

Moral decision making is rife with internal conflict, say developmental psychologists

A new study reveals that people are capable of articulating multiple considerations when making moral decisions, including harm, welfare, individual rights, fairness, and justice. Despite the complexity of scenarios like the trolley dilemma, participants were able to provide reasons for their judgments, indicating that moral reasoning ...

SourceUniversity of California - Santa Cruz·JournalMonographs of the Society for Research in Child Development·DateAug 2, 2018

How plant-rotting bacteria steal iron to survive

A new study reveals how plant-rotting bacteria obtain essential iron for survival by pirating it from host plants' iron-bearing proteins. The bacterium Pectobacterium uses a membrane channel to import the protein ferredoxin, which is then processed to release iron.

SourcePLOS·JournalPLOS Biology·DateAug 2, 2018

Broadband Internet causes sleep deprivation, a new study finds

A new study by Bocconi University scholars found that broadband internet access causes sleep deprivation, particularly among individuals with DSL lines. These individuals sleep 25 minutes less than those without DSL Internet and are less likely to reach the recommended amount of sleep, leading to significant economic losses in Germany.

SourceBocconi University·JournalJournal of Economic Behavior & Organization·DateAug 2, 2018

Plants can tell the time using sugars

A study discovered that plants regulate their internal 'circadian clock' using sugars from photosynthesis to stay in tune with day and night cycles. This process enables plants to match their activities to the time of day, crucial for growth, flower opening, and energy reserve management.

SourceUniversity of Bristol·JournalCurrent Biology·DateAug 2, 2018

Field test for dog Leishmania exposure evaluated

A new field test has been developed to rapidly screen dogs for exposure to Phlebotomus pernicious sand flies, the primary vector of Leishmania infantum. The immunochromatographic test (ICT) shows high sensitivity and specificity in detecting antibodies against the fly's salivary protein.

SourcePLOS·JournalPLOS Neglected Tropical Diseases·DateAug 2, 2018

Mapping blue carbon in mangroves worldwide

Mangroves are found in tropical coastal settings worldwide and can store greater amounts of carbon than any other terrestrial ecosystem. A new study provides more accurate estimates of blue carbon storage, revealing that it has been underestimated by up to 50% in some areas and overestimated by up to 86% in others.

SourceLouisiana State University·JournalFrontiers in Ecology and Evolution·DateAug 2, 2018

Wearable devices: Useful medical insights or just more data?

A new review questions the usefulness of wearable devices in providing medical insights, citing limited formal validation and potential risks of misinterpretation. The study highlights concerns about concussion detection technologies and the need for rigorous evaluation and regulation of the growing industry.

SourceFrontiers·JournalFrontiers in Physiology·DateAug 2, 2018

Stem cell research for cystic fibrosis leaps forward

Researchers at the University of Adelaide successfully applied cell transplantation therapy to replace damaged cells in CF patients, providing a potential cure. The innovative method involves harvesting adult stem cells from the lungs, correcting them with gene therapy, and reintroducing them back into the patient.

SourceUniversity of Adelaide·JournalStem Cell Research & Therapy·DateAug 2, 2018

Fecal deposits reveal the fruit fly's pheromone flag

Researchers at RIKEN Center for Brain Science discovered that male fruit flies deposit droppings as pheromone-laced landmarks to signal their presence, attracting females and increasing mating chances. This finding highlights the importance of fecal deposits in social communication among flies.

SourceRIKEN·JournalCurrent Biology·DateAug 2, 2018

Cash transfers :New research finds combining demand and supply-side incentives improves longer-term

A study in Honduras found that combining conditional payments with investment in schools and clinics leads to better educational and labor market outcomes. The research suggests that this approach can have a transformative impact on individuals' lives.

'Strange metals' just got stranger

Researchers at Florida State University's National High Magnetic Field Laboratory have discovered that cuprates, known for their unique behavior, carry current in a non-conventional way. The study reveals that the electrons seem to cooperate as they move through the material, contradicting the widely accepted understanding of conventio...

SourceFlorida State University·JournalScience·DateAug 2, 2018

New method refines cell sample analysis

The Iterative Indirect Immunofluorescence Imaging (4i) technique refines standard immunofluorescence imaging by visualizing up to 40 proteins in a single cell. A new computer program, Multiplexed Protein Maps, analyzes the data and generates maps of protein distribution, providing a systematic survey of cellular organization.

SourceUniversity of Zurich·JournalScience·DateAug 2, 2018

Machine learning links dimensions of mental illness to abnormalities of brain networks

A new study using machine learning has identified four brain-based dimensions of mental health disorders, including mood, psychosis, fear, and disruptive externalizing behavior. These findings suggest that psychiatric symptoms do not neatly fall into established categories, but instead emerge from diverse clinical domains to form dimen...

SourceUniversity of Pennsylvania School of Medicine·JournalNature Communications·DateAug 2, 2018

Alcohol increases tuberculosis-related deaths in young mice

Chronic alcohol consumption modulates host immune defense mechanisms, increasing susceptibility to Mtb and other infections. Young alcoholic individuals with latent TB infection are at a higher risk of developing active TB, according to the study published in PLOS Pathogens.

SourcePLOS·JournalPLOS Pathogens·DateAug 2, 2018

Novel PET imaging method could track and guide therapy for type 1 diabetes

Researchers have developed a novel PET imaging method that can measure beta-cell mass, enhancing the ability to monitor and guide diabetes therapies. The new imaging method uses a radioligand to identify beta cells and has shown promising results in differentiating between healthy individuals and those with type 1 diabetes.

SourceSociety of Nuclear Medicine and Molecular Imaging·JournalJournal of Nuclear Medicine·DateAug 2, 2018

Fish reproduction: Two times a lady

A DNA probing technique clarifies the mechanism behind clonal reproduction of female dojo loach fish, revealing how they double their chromosomes twice to ensure clonal reproduction. The study also provides insight into the ancestral origin of this population and suggests a method for developing clone fish with desirable characteristics.

SourceHokkaido University·JournalChromosome Research·DateAug 2, 2018