Researchers used cryo-EM to investigate the molecular basis of functional diversity in alcohol oxidase isozymes. The study found structural differences in cofactor binding and amino acid residues that affect enzyme stability and catalytic performance, ultimately resulting in distinct roles among the variants.
Researchers observed a previously unknown strategy used by corioxenid parasites to overcome host-imposed barriers. By raising their host's wings, male parasites were able to emerge and mate. This finding expands our understanding of host range diversification within Strepsiptera.
A study in Japan found that individuals with higher health literacy regarding gastric cancer and screening, those who perceived themselves to be at risk, and those who received encouragement from others exhibited stronger screening intentions. Concrete implementation intentions were also significantly linked to actual screening partici...
A study of the 2005 Fukuchiyama-Line derailment accident reveals failures in organizational management as the root cause. The analysis found that skill development systems based on two-way communication among drivers are the most effective measure for preventing such accidents.
A study found that PEG tube aspirate and vomitus display distinct color patterns, with the aspirate being yellow-green and the vomitus dark brown. This contrast can serve as a diagnostic clue for gastric outlet obstruction in resource-limited settings.
Researchers discovered a molecular link between multicentric carpotarsal osteolysis (MCTO) and kidney disease, highlighting pathogenic MAFB accumulation and PI3K/AKT signaling. Treatment with imatinib suppressed AKT phosphorylation and attenuated glomerular injury in mice.
Researchers analyzed a large dataset of Japanese Instagram ads to identify linguistic patterns linked to click-through rates. The study found that word choices for supplement and cosmetic ads differed significantly, with risk-related words boosting CTR in supplement ads, while motion-related language increased CTR in cosmetic ads.
A study of 308 participants found that those with higher baseline ePTFp concentrations experienced a significantly steeper decline in kidney function over time. This association remained significant even when serum phosphate concentrations were within normal range.
A study found mitochondrial morphological abnormalities and downregulation of mitochondria-related genes in patients who developed myocarditis after mRNA vaccination. Treatment with antioxidants and pharmacological inhibitors suppressed the condition. Sex hormones may also play a role in preventing cardiac dysfunction.
Children who engaged in regular outdoor play had lower sedentary time and higher moderate-to-vigorous physical activity in adulthood, while those experiencing exercise restrictions during childhood had lower adult physical activity levels. These findings support personalized lifestyle interventions for patients with CHD.
After a mild head injury, CSF motion increased in some regions and decreased in others. The technique may help clarify the link between post-traumatic brain conditions and changes in cognitive function.
A novel circular RNA replicon was identified in a high-temperature hot spring ecosystem, showing profound divergence from previously known circular RNAs. The discovery reveals diverse self-replicating RNAs exist even in extreme environments, broadening the ecological scope of RNA-based replication systems.
Tomatoes have difficulty germinating under prolonged heat stress, but two mutant lines with the loss-of-function mutation in SlIAA9 showed little decline in germination and normal seedling development. The mutants exhibited elevated expression of antioxidant enzymes and heat shock proteins, leading to enhanced resilience to heat stress.
Researchers used LiDAR surveys to analyze medieval mountain castles' topography, distinguishing between human-made and natural landscapes. The study found that castle sites exhibit greater variability in slope compared to unmodified natural ridges, with high slope variability linked to landslide traces within the castle boundaries.
Researchers found that pill bugs do not simply incorporate ingested CaCO3 minerals as building blocks. Instead, they actively restructure CaCO3 within their bodies to form their tergite cuticles. This study highlights the biological control underlying mineral formation and provides new insights into biomineralization mechanisms.
Researchers used genome editing to inactivate a gene involved in anthocyanin production, resulting in increased accumulation of other flavonoids. This modification did not affect lettuce growth, suggesting a promising strategy for developing cultivars with tailored functional components.
Researchers found that the loss of flight in Prosopocoilus hachijoensis is linked to atrophy of flight muscles and reduced relative wing size. The species' increased reliance on ground-based locomotion, particularly in females, may have driven this adaptation.
Researchers discovered that limonene can be used as a reaction solvent for the Mitsunobu reaction, allowing efficient separation and purification. This characteristic promotes high reaction efficiency and simplified purification, making it an attractive alternative to traditional methods.
Researchers observed nonrandom patterns of spike D614 reversions in SARS-CoV-2 delta and omicron BA.2 variants, suggesting a non-spontaneous mechanism. These reversions occurred disproportionately after peak transmission periods and showed geographic clustering.
Researchers determined the LH1-RC complex structure at high resolution, identifying a new membrane protein and non-heme Fe ion that may facilitate electron transfer. The findings provide insight into the photosynthetic complex and could contribute to genetically engineered phototrophic systems and bioremediation technologies.
Research reveals longer weekly home-visit rehabilitations (HR) significantly improve activities of daily living (ADL) among older adults, especially those requiring moderate to severe care. The study found that HR duration correlates with ADL improvement in this population.
Researchers investigated brain mechanisms that maintain balance between intimidation and physical aggression in mice. Projections from the lateral hypothalamus to the dorsal raphe nucleus play a critical role in preserving this balance. Increasing pathway activity led to increased attacks, while inhibiting it decreased attack bites.
Demographic changes are linked to increased household energy requirements, CO2 emissions, and financial burdens in Japan and the UK. Older single-person households have higher energy use and costs due to greater heating and cooling needs.
A new magnetic measurement system can reproduce the actual operating environment of next-generation power electronics devices by capturing complete M-H loops up to saturation. The system enables quantitative measurements under high-frequency (MHz-band) and high-field conditions, closely matching real device operation.
A biologically inspired event camera measures vibrations accurately without expensive equipment, providing a cost-effective alternative to laser-based systems. The camera captures high-speed vibrations by recording brightness changes independently at each pixel, enabling precise amplitude, phase, and frequency estimation.
The implementation of Japan's indoor smoke-free laws resulted in a modest increase in smoke-free establishments, with a 5.7% nationwide increase and 13.5% in areas with stricter ordinances. Despite this, a substantial number of establishments still permit indoor smoking due to exemptions under the current legislation.
Research reveals carbon monoxide poisoning from waterpipe smoking can occur after brief use, outdoor smoking, or secondhand exposure. The study identified 68 cases of acute CO poisoning, including 13 cases of polycythemia, a chronic condition caused by prolonged exposure to carbon monoxide.
Multicultural intergroup dialogue improves holistic support for international students at Japanese universities. The approach, based on Intergroup Dialogue, promotes equitable and inclusive university environments, where students from diverse backgrounds interact and learn with one another.
A sea urchin single-cell RNA-seq atlas reveals dynamic changes in cell states during neural differentiation. The study provides an accessible platform for exploring gene expression patterns, enabling detailed analysis of neurogenic lineages and regulatory dynamics.
The study highlights the importance of personalized features in healthcare apps to promote physical activity. Key findings include the need for educational components, timely feedback, and tailored exercise suggestions to support users' daily routines and work demands.
A randomized study of 14 young adults found that sparkling water consumption reduced subjective fatigue and improved executive function while playing virtual soccer for three hours. Players who drank sparkling water also committed fewer fouls and had better game enjoyment compared to those drinking plain water.
Researchers used UAV-LiDAR technology to measure deposits on abandoned mountain roads, estimating decadal-scale debris supply. The study found that debris supply increases with steeper slope angles and larger contributing areas, posing a risk for debris flows.
Researchers have developed a new type of solid-state magnesium-air rechargeable battery using nitrogen-doped porous graphene as the cathode. The battery exhibits superior performance and safety compared to traditional systems, with improved chloride resistance and high catalytic activity.
This study assesses the educational impact of introducing interest-matched examples in data science education, showing a positive effect on students' motivation and understanding. The findings suggest that instructional approaches grounded in intrinsic motivation theory can improve data science education quality.
Researchers developed a framework to predict acoustic streaming in mid-air phased arrays, revealing its influence on tactile perception and object stability. The study validates thermoviscous and atmospheric attenuation models, enabling precise sound-field design for safer ultrasonic interfaces.
Researchers discovered a short amino acid motif in NIN that confers broader DNA binding specificity, essential for rhizobial infection and nitrogen fixation. This finding suggests NIN evolved by co-opting preexisting molecular features of ancestral NLP transcription factors.
A massive Kamchatka earthquake with a magnitude of 8.8-8.9 struck off the peninsula in 2025, rupturing nearly the same region as a 1952 M9-class earthquake. The study estimated fault slip reached 9-12 m across a broad area, substantially exceeding the accumulated slip deficit since 1952.
A study examines how human-AI coexistence is represented in fictional works, revealing varying roles and degrees of autonomy. The findings propose a theoretical model conceptualizing AI as an entity forming relationships with humans.
A high-radiation-tolerance GaN detector was fabricated to enable real-time two-dimensional position detection of individual alpha particles and xenon heavy ions. The detector exhibited stable operation at radiation levels significantly higher than those tolerated by conventional Si-based detectors.
A longitudinal study has identified key physical performance indicators that contribute to severe knee injuries in rugby players. The analysis found associations between direct contact injuries and greater severity and burden, as well as a high limb symmetry index for hip internal rotation strength and hip extension strength.
Apusomonads display a clear avoidance response to blue light by asymmetrizing their posterior flagellum and contracting their cell body. This primitive mechanism provides clues to the evolution of high-speed flagellar movements in opisthokonts.
Researchers identified two fundamental coordination patterns in underwater dolphin kick, accounting for over 99% of movement across performance levels. Faster swimmers exhibited greater shoulder extension and increased lower trunk movement, enabling reduced water resistance and improved propulsion.
Research reveals that Sulf1 is essential for both reward-dependent and aversion learning, highlighting its critical role in adult brain function. The enzyme acts through distinct dopamine D1 and D2 receptor pathways, underscoring its importance in neural circuits involved in learning.
Researchers at University of Tsukuba discovered a regulatory small RNA, AdiZ, that directly negatively regulates genes involved in glucose uptake and glycolysis. This induction facilitates Salmonella's survival within macrophages by coupling acid resistance to metabolic reprogramming.
The Japanese version of the rPATD questionnaire has been validated to assess attitudes towards medication reductions among older adults and their caregivers in Japan. The tool is reliable, valid, and easily understood, facilitating shared decision-making between healthcare providers and patients.
A cellulose-based composite sheet can simultaneously adsorb and shield radioactive elements like cesium, iodine, and strontium. The resulting composite demonstrates its potential for controlling environmental contamination.
Researchers studied unique clouds around Mount Fuji, classifying them into subtypes and determining occurrence frequencies. Tsurushi clouds were generated by mountain waves, while Hata clouds displayed different seasonal patterns, indicating a distinct cloud category.
Researchers analyzed medical records of 1,269 elderly patients with advanced cancer to find that over 70% were prescribed potentially inappropriate medications (PIMs), which declined closer to death. PIM discontinuation was more common among female patients, those with polypharmacy, and palliative care unit admissions.
Dog owners experienced a decline in physical activity during the COVID-19 pandemic but returned to pre-pandemic levels. Non-dog owners showed no significant changes. Before the pandemic, dog ownership was associated with high exercise self-efficacy, predicting greater physical activity.
Researchers developed an AI-based system that accurately detects whip sounds in horse racing, achieving detection rates of up to 70% in audio data. The system's ability to process audio in real-time and its reliance on high-frequency components make it a promising tool for improving animal welfare and fair competition.