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Science News Archive 2024 - Page 452


Page 452 of 484

Cancer treatment two and a half times more effective when tumours have defective "energy factories"

Researchers have discovered that tumours with mitochondrial DNA mutations are up to two and a half times more likely to respond to immunotherapy, opening a new avenue for improving cancer treatment. This finding could enable doctors to identify patients who would benefit most from immunotherapy before starting treatment.

SourceCancer Research UK·JournalNature Cancer·TypeExperimental study·DateJan 29, 2024

“All_Aboard” app effectively aids blind and visually impaired commuters in finding bus stops

A new smartphone app called All_Aboard has been developed to aid blind and visually impaired individuals in finding bus stops. The app uses artificial intelligence and camera technology to detect street signs and provide auditory cues, achieving a success rate of 93% compared to Google Maps' 52%.

SourceMass Eye and Ear·JournalTranslational Vision Science & Technology·TypeExperimental study·DateJan 29, 2024

High power fiber laser at 1.2 μm waveband

Researchers have successfully generated high power fiber lasers at 1.2 μm waveband using stimulated Raman scattering effect in phosphorus-doped fibers, achieving record-breaking output powers of up to 735.8 W. This breakthrough has significant implications for photodynamic therapy, biomedical diagnosis, and oxygen sensing applications.

SourceHigher Education Press·JournalFrontiers of Optoelectronics·TypeExperimental study·DateJan 29, 2024

Organ donations after MAiD made up 14% of deceased donations in Quebec

A new study in the Canadian Medical Association Journal found that organ donations after medical assistance in dying (MAiD) represented 14% of all deceased organ donations in Quebec in 2022. The majority of donors had neurodegenerative diseases, with amyotrophic lateral sclerosis being the most common condition.

SourceCanadian Medical Association Journal·JournalCanadian Medical Association Journal·TypeObservational study·DateJan 29, 2024

Psychology research: Women more sensitive to cocaine

A recent study by researchers at the University of Texas at Arlington found that women are more susceptible to cocaine addiction than men due to fluctuations in sex hormones. The study discovered that the female sex hormone estradiol enhances the rewarding effects of cocaine, leading to increased sensitivity among females.

SourceUniversity of Texas at Arlington·JournalPharmacology Biochemistry and Behavior·TypeExperimental study·DateJan 29, 2024

Destroying tumor cells with calcium

Researchers have developed a synergistic antitumor drug that activates calcium channels in tumor cells, leading to a deadly influx of calcium ions. The treatment involves using a bioactive agent to generate reactive oxygen species, which triggers the activation of calcium channels in both the outer membrane and endoplasmic reticulum.

SourceWiley·JournalAngewandte Chemie International Edition·TypeExperimental study·DateJan 29, 2024

Researchers leverage AI to develop early diagnostic test for ovarian cancer

Researchers have developed an AI-driven test that accurately diagnoses ovarian cancer in women clinically classified as normal, improving detection of early-stage disease. The test uses machine learning and blood metabolite information to assign a probability of disease presence or absence, offering a more clinically informative approach.

SourceGeorgia Institute of Technology·JournalGynecologic Oncology·TypeComputational simulation/modeling·DateJan 29, 2024

A firm eye on the proboscis

A study by Konstanz biologists reveals that the moths use visual feedback to move and correct the movement of their proboscis, similar to humans grasping objects. The animals' efficient way of working is also great models for applied research in robotics and understanding the visual control of appendages.

SourceUniversity of Konstanz·JournalProceedings of the National Academy of Sciences·DateJan 29, 2024

High school students who report using alcohol, cannabis or nicotine at higher risk for suicidal thoughts and other mental health disorders

A recent study found that high school students who use substances are more likely to experience suicidal thoughts, depression, anxiety, and other psychiatric symptoms. The study, published in JAMA Pediatrics, highlights the need for comprehensive screening, prevention, and intervention efforts to address mental health needs.

SourceMassachusetts General Hospital·JournalJAMA Pediatrics·DateJan 29, 2024

Breast cancer test may make bad chemotherapy recommendations for Black patients

A study found that the 21-gene breast recurrence score test may underestimate chemotherapy benefits for young Black women with estrogen receptor-positive breast cancer. The researchers recommend lowering the test's cutoff point to ensure accurate treatment recommendations for all patients regardless of race or ethnicity.

SourceUniversity of Illinois Chicago·JournalJournal of the National Comprehensive Cancer Network·DateJan 29, 2024

RNA sequencing analysis may hold the key to more accurate diagnosis and targeted treatment of pediatric B-acute lymphoblastic leukemia

A pilot study proposes a promising global genomic assay for diagnosing molecular subtypes in pediatric B-ALL, leading to more accurate diagnosis and targeted treatment options. RNA sequencing analysis accurately identified subtypes in all known cases and determined genetic subtype in 79% of previously unknown cases.

SourceElsevier·JournalJournal of Molecular Diagnostics·TypeExperimental study·DateJan 29, 2024

New technology makes cancer easier for immune system to find and destroy

A new CRISPR-based technology, TRED-I, has been developed to increase visibility of cancer cells to the immune system by augmenting MHC class I molecules. This technology has shown promising results in animal cancer models, reducing tumor sizes and enhancing treatment efficacy when used with existing immunotherapy.

SourceHokkaido University·JournalProceedings of the National Academy of Sciences·TypeExperimental study·DateJan 29, 2024

Controlling respiratory syncytial virus: real life data from Luxembourg

Early data from Luxembourg's national immunisation campaign against severe respiratory syncytial virus (RSV) in 2023 showed a decline in hospitalisations, especially among infants under six months old. The authors attributed this to the administration of a monoclonal antibody, nirsevimab, shortly after birth. Additionally, the mean age...

SourceEuropean Centre for Disease Prevention and Control (ECDC)·JournalEurosurveillance·TypeData/statistical analysis·DateJan 29, 2024

Integrated design of Global Ocean Observing System essential to monitor climate change

The study found that different instrumental systems in the Global Ocean Observing System (GOOS) complement each other and are essential for accurately monitoring ocean warming. The GOOS, which includes platforms such as free drifting instrumented floats, mooring buoys, and autonomous pinniped data, provides a comprehensive view of ocea...

SourceOcean-Land-Atmosphere Research (OLAR)·JournalOcean-Land-Atmosphere Research·TypeObservational study·DateJan 29, 2024

New tests of quantum electrodynamics in extreme fields with the heaviest two-electron ion

Researchers have successfully carried out high-precision x-ray spectroscopy on helium-like uranium, disentangling one-electron and two-electron quantum electrodynamics effects. The measurement achieves an accuracy of 37 parts per million, setting a new benchmark for QED in the strong field domain.

SourceGSI Helmholtzzentrum für Schwerionenforschung GmbH·JournalNature·TypeExperimental study·DateJan 29, 2024

Students are missing more school, and school nurses may be well-positioned to help

A recent study by University of Missouri researcher Knoo Lee found that school nurses are well-positioned to identify students at-risk for chronic school absenteeism. Students who have many partial-day absences often proactively seek out school nurses as a source of comfort and support, presenting an opportunity for intervention before...

SourceUniversity of Missouri-Columbia·JournalThe Journal of School Nursing·TypeSurvey·DateJan 29, 2024

Quick and easy preparation of small-sized metal nanoparticles by microchip laser

The development of a compact microchip laser system paves the way for simple benchtop preparation and direct use of metal nanoparticles in catalytic reactions. The study reveals that the microchip laser exhibits high ablation efficiency despite having smaller pulse energy compared to conventional lasers, making it an attractive alterna...

SourceIndustrial Chemistry & Materials·JournalIndustrial Chemistry and Materials·TypeExperimental study·DateJan 29, 2024

PolyU develops high-efficiency carbon dioxide electroreduction system for reducing carbon footprint and progressing carbon neutrality goals

Researchers from PolyU develop a durable, highly selective and energy-efficient CO2 electroreduction system that converts CO2 into ethylene for industrial purposes. The APMA system achieves high specificity of 50% and operates for over 1,000 hours at an industrial-level current of 10A.

SourceThe Hong Kong Polytechnic University·JournalNature Energy·TypeExperimental study·DateJan 29, 2024

A manifold fitting approach for high-dimensional data reduction beyond Euclidean space

A new technique accurately describes high-dimensional data using lower-dimensional smooth structures, overcoming the limitations of traditional methods. The approach achieves cutting-edge estimation accuracy and convergence rates while enhancing computational efficiency through GANs.

SourceNational University of Singapore·JournalProceedings of the National Academy of Sciences·TypeData/statistical analysis·DateJan 29, 2024

Enzyme for biocatalysis uses solvent as a substrate

Researchers developed a new enzyme that uses formamides as a substrate for biocatalysis, achieving equivalent or slightly better results than traditional formate-based systems. The enzyme converts formamides into NADPH, producing CO2 as a waste product and opening up new possibilities for asymmetric reductive amination.

SourceRuhr-University Bochum·JournalACS Catalysis·TypeExperimental study·DateJan 29, 2024

Rice scientists pull off quantum coup

Researchers at Rice University have discovered a new material that exhibits both quantum correlations and geometric frustration, resulting in a unique flat band structure. This finding provides empirical evidence of the effect in a 3D material and has implications for understanding exotic features in materials science.

SourceRice University·JournalNature Physics·TypeExperimental study·DateJan 29, 2024