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Science News Archive October 2025 - Page 23


Page 23 of 54

Rapid blood pressure fluctuations linked to early signs of brain degeneration in older adults

A new study by USC researchers reveals that short-term 'dynamic instability' in blood pressure is linked to loss of brain tissue and nerve cell injury in older adults. This phenomenon, where blood pressure fluctuates wildly from one heartbeat to the next, may be a key risk factor for brain shrinkage and neurodegeneration.

SourceUniversity of Southern California·TypeObservational study·DateOct 29, 2025

Biosensor identifies protein linked to depression and schizophrenia in saliva

Researchers at the University of São Paulo developed a low-cost, portable biosensor that can quickly identify altered levels of BDNF associated with psychiatric disorders. The device detects extremely low concentrations of BDNF in human saliva, which is crucial for growth and maintenance of neurons and development of brain functions.

Study finds improvement in knee pain with exercise and physical therapy

A new study led by Mass General Brigham researchers found that a home exercise program combined with standard or sham physical therapy improved knee pain for participants with osteoarthritis and meniscal tears. The addition of regular visits with a physical therapist resulted in slightly greater pain relief, suggesting the importance o...

SourceMass General Brigham·JournalNew England Journal of Medicine·TypeRandomized controlled/clinical trial·DateOct 29, 2025

How microbes control mammalian cell growth

Scientists discovered queuine and preQ1, produced by gut bacteria, regulate protein synthesis in human cells. These bacterial metabolites promote cell growth and halt it, respectively. The study suggests using diet or microbiome composition to balance cell growth in cancer and prevent autoimmune diseases.

SourceUniversity of Chicago·JournalNature Cell Biology·DateOct 29, 2025

Amid renewable-energy boom, study explores options for electricity market

A study exploring options for electricity markets during the clean-energy transition highlights key challenges and proposed solutions. The researchers assessed 11 market design proposals to guide energy generation and sources, with findings focusing on forecasting demand, investing in renewable resources, and ensuring system reliability.

SourcePenn State·JournalEnergy Economics·TypeComputational simulation/modeling·DateOct 29, 2025

Comprehensive analysis of alkaline earth metal ion removal from biodiesel using amino polycarboxylate chelating agents: performance and mechanistic insights

Scientists have developed a method to remove harmful alkaline earth metal ions from biodiesel using amino polycarboxylate chelating agents. The most efficient agent, CDTA, removed up to 98.6% of Ca2+ and 94.3% of Mg2+, improving oxidative stability.

SourceShanghai Jiao Tong University Journal Center·JournalFrontiers in Energy·TypeNews article·DateOct 29, 2025

GLIS model as a predictor of outcomes in older adults with heart failure

Researchers validate GLIS model as a reliable predictor of sarcopenia and mortality risk in older patients with heart failure, outperforming existing tests. The model's accuracy enables early detection of physical decline and poor prognosis, informing treatment planning and discharge decisions.

SourceJuntendo University Research Promotion Center·JournalEuropean Journal of Preventive Cardiology·TypeObservational study·DateOct 29, 2025

Loss of liver GH signaling causes lean fatty liver

A recent study reveals that loss of liver growth hormone (GH) signaling contributes to the development of lean metabolic-associated fatty liver disease. The researchers developed a mouse model with hepatic GH receptor knockout and found that CD36-mediated lipid uptake and C/EBPβ-driven lipogenesis form a central regulatory hub driving ...

SourceHigher Education Press·JournalLife Metabolism·TypeExperimental study·DateOct 29, 2025

Electric vehicles outperform gasoline cars in lifetime environmental impact

A new study finds that electric vehicles outperform gasoline cars in lifetime environmental impact, with a reduction in cumulative CO2 emissions after two years of use. The transportation sector accounts for 28% of US greenhouse gas emissions and adopting electric vehicles can improve climate and air quality.

SourcePLOS·JournalPLOS Climate·TypeComputational simulation/modeling·DateOct 29, 2025

Conquering intractable blindness with an artificial retina

A team of researchers has developed an artificial retina model using 3D printing technology, which closely replicates the pathological microenvironment of retinal vein occlusion. The model exhibited responses similar to those observed in clinical cases, validating its potential as a preclinical drug evaluation system.

SourcePohang University of Science & Technology (POSTECH)·JournalAdvanced Composites and Hybrid Materials·DateOct 29, 2025

Predicting and lengthening pacemaker battery life

Researchers developed an algorithm to optimize pacemaker function usage, reducing battery power consumption and potentially extending battery life by years. By switching off unnecessary features, doctors can reduce the number of surgeries needed and lower associated costs for the NHS.

SourceUniversity of Leeds·JournalPLOS One·TypeComputational simulation/modeling·DateOct 29, 2025

Study links early cannabis use and health problems

A new study found that adolescents who start using cannabis early are more likely to need healthcare for mental and physical problems as they enter adulthood. Those who began using cannabis before age 15 were more likely to seek care for depression, anxiety, suicidal thoughts, and physical health issues.

SourceMcGill University·JournalJAMA Network Open·TypeData/statistical analysis·DateOct 29, 2025

IOCB Prague unveils a fundamentally faster, more affordable way to produce quantum nanodiamonds

A new method allows for the creation of light-emitting quantum centers in nanodiamonds in just four minutes, yielding large quantities of high-quality material. The breakthrough enables industrial production of higher-quality and more affordable quantum nanodiamonds with applications in research and technology.

SourceInstitute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences (IOCB Prague)·JournalAdvanced Functional Materials·TypeExperimental study·DateOct 29, 2025

Neanderthal DNA reveals ancient long-distance migrations

A tiny 5 cm long Neanderthal bone found in Crimea revealed ancient DNA showing genetic closest relation to Neanderthals from Siberia, over 3,000 kilometers away. Climate modelling suggests that Neanderthal groups likely migrated across vast Eurasian steppes during favourable climate periods.

SourceUniversity of Vienna·JournalProceedings of the National Academy of Sciences·DateOct 29, 2025

The minimal circuit of the circadian clock

A recent study by researchers at University of Würzburg found that a small group of four specific neurons are sufficient to maintain the fly's basal activity rhythm. The findings challenge the prevailing model of a main pacemaker and suggest a core clock network that expands through additional modulation.

SourceUniversity of Würzburg·JournalProceedings of the National Academy of Sciences·TypeExperimental study·DateOct 29, 2025

“State of the climate” 2025: Earth’s vital signs worsen, science shows options for livable future

The report highlights 22 vital signs at record levels, including surface temperature and ocean heat content. It proposes high-impact strategies to mitigate the climate crisis, such as transitioning to renewable energy and protecting ecosystems, which can remove up to 10 gigatonnes of carbon dioxide emissions per year.

SourcePotsdam Institute for Climate Impact Research (PIK)·JournalBioScience·TypeLiterature review·DateOct 29, 2025

Researchers pose five guiding questions to improve the use of artificial intelligence in physicians’ clinical decision-making

A research team provides a framework to support doctors in their patient care while ensuring AI doesn't undermine their expertise. The framework addresses key issues like timing, trust, and over-reliance on AI.

SourceUniversity of California - Los Angeles Health Sciences·JournalJournal of the American Medical Informatics Association·TypeCommentary/editorial·DateOct 29, 2025

Researchers develop highly sensitive imaging technique to detect myelin damage

Researchers developed a highly sensitive imaging technique using birefringence microscopy and AI to detect myelin damage in the brain. The study found that this approach can reliably count and map myelin damage across whole sections of the brain, providing insights into the spatial distribution of myelin debris.

SourceBoston University School of Medicine·JournalNeurophotonics·TypeExperimental study·DateOct 29, 2025