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Science News Archive 2025 - Page 499


Page 499 of 574

Rejuvenating the blood: A new pharmacological strategy targeting RhoA in haematopoietic stem cells

Researchers develop ex vivo treatment of blood stem cells with Rhosin, a RhoA inhibitor, to rejuvenate them and improve the production of healthy blood cells. This strategy targets the core of the ageing process, making blood stem cells more capable of regenerating and producing new healthy blood cells.

SourceIDIBELL-Bellvitge Biomedical Research Institute·JournalNature Aging·TypeExperimental study·DateNov 24, 2025

Old drug, new use: How a cheap, century-old drug can improve life with type 1 diabetes

A Garvan-led clinical trial has found that using metformin, a common type 2 diabetes medication, reduces the amount of insulin needed to maintain blood sugar levels in type 1 diabetes. The study suggests that metformin may serve as an affordable treatment option for people with type 1 diabetes.

SourceGarvan Institute of Medical Research·JournalNature Communications·TypeRandomized controlled/clinical trial·DateNov 24, 2025

Nearly seven in 10 Medicaid patients not receiving treatment within six months of an opioid use disorder diagnosis, study finds

A US study of over a million Medicaid enrollees reveals major gaps in access to medication-based addiction treatments, particularly for Black patients. Methadone and buprenorphine show significant overdose risk reductions, highlighting the need for policy reforms to ensure timely access.

SourceTaylor & Francis Group·JournalThe American Journal of Drug and Alcohol Abuse·TypeObservational study·DateNov 24, 2025

The world’s first elucidation of the immunomodulatory effects of kimchi by the World Institute of Kimchi

A recent clinical study by the World Institute of Kimchi reveals kimchi's immunomodulatory effects through single-cell transcriptomics analysis. The study found that kimchi consumption strengthened antigen-presenting cells and balanced CD4+ T cell differentiation, suggesting a 'precision regulator' effect on the immune system.

The Trojan Horse gene of the marine virus

Researchers at Technion Faculty of Biology discovered that marine viruses deploy a sophisticated Trojan horse maneuver to dismantle ocean bacteria's energy systems, using the breakdown products for self-replication. This process reduces global photosynthetic energy production by about 5% and could impact global carbon and oxygen cycles.

SourceTechnion-Israel Institute of Technology·JournalNature·TypeExperimental study·DateNov 23, 2025

Hybrid ambient documentation decreases after-hours work, note delays for physicians

A new study by Mass General Brigham researchers found that combining generative AI with ambient documentation technologies significantly reduced after-hours work and note delays. The hybrid program, which included a virtual scribe, showed a 41% decrease in after-hours work and a 66% decline in documentation delays.

SourceMass General Brigham·JournalJournal of General Internal Medicine·TypeObservational study·DateNov 23, 2025

New research confirms HPV vaccination prevents cervical cancer

Two new Cochrane reviews show that HPV vaccines are effective in preventing cervical cancer and pre-cancerous changes, especially when given to young people before they are exposed to the virus. Girls vaccinated before the age of 16 were found to be 80% less likely to develop cervical cancer.

SourceCochrane·JournalCochrane Database of Systematic Reviews·TypeSystematic review·DateNov 23, 2025

Transforming acute exacerbations of chronic obstructivepulmonary disease (AECOPD) risk assessment: Amulti-algorithm machine learning approach for preciseclinical phenotyping

A multi-algorithm machine learning approach enhances AECOPD prediction by identifying key clinical features, including biochemical indicators, demographic characteristics, and pulmonary function parameters. The integrated model demonstrates superior predictive performance compared to traditional methods.

SourceFAR Publishing Limited·JournalView·TypeObservational study·DateNov 22, 2025

When trade routes shift, so do clouds: Florida State University researchers uncover ripple effects of new global shipping regulations

New research published in Atmospheric Chemistry and Physics reveals that cleaner fuels have reduced ship emissions' influence on cloud formation, helping refine global climate models. The study found a 67% decrease in cloud-altering abilities after the IMO regulations went into effect.

SourceFlorida State University·JournalAtmospheric Chemistry and Physics·DateNov 21, 2025

Sensors could help reduce fatal racehorse injuries by 20%

Researchers developed a wearable sensor to track thoroughbred horse movements and identify risk factors for catastrophic injury. The study found that horses with high risk scores were 44 times more likely to suffer fatal injuries, and implementing the technology could reduce fatal injury rates by nearly 20%.

SourceWashington State University·JournalJournal of the American Veterinary Medical Association·TypeObservational study·DateNov 21, 2025

Nasal drops fight brain tumors noninvasively

Researchers developed a noninvasive approach using nasal drops to deliver potent tumor-fighting medicine to the brain, boosting the immune response and eradicating glioblastoma tumors in mice. The nano-sized medicine successfully activated the STING pathway and armed the immune system to fight the cancer.

SourceWashU Medicine·TypeExperimental study·DateNov 21, 2025

Sharper, straighter, stiffer, stronger: Male green hermit hummingbirds have bills evolved for fighting

Researchers found that male green hermit hummingbirds' bills are straighter (3%) and sharper (69%) than females', allowing for more efficient energy expenditure and stress resistance during fights. These differences were driven by the birds' tendency to fight for mates, rather than solely by ecological factors.

SourceUniversity of Washington·JournalJournal of Experimental Biology·DateNov 21, 2025

American Society for Nutrition (ASN) and ASN Foundation announces new scholarship program for students in nutrition programs

The American Society for Nutrition (ASN) and ASN Foundation announce a new scholarship program for graduate students in Academic Nutrition Departments and Programs. This initiative provides complimentary ASN memberships to support student-to-professional pipelines and remove financial barriers to early-career development.

Improving snowfall forecasts in the Mountain West

Researchers at the University of Utah have developed a new model to predict the snow-to-liquid ratio, which varies widely in the Western United States. By training a random forest model on high-quality data from 14 mountain sites, they were able to explain nearly half of the variability in snow density compared to existing methods.

SourceUniversity of Utah·JournalWeather and Forecasting·TypeComputational simulation/modeling·DateNov 21, 2025

New tech can unlock mysteries of genome’s hidden half

Researchers have found that a new DNA sequencing technology can study how transposons move within and bind to the genome, playing critical roles in immune response, neurological function, and genetic evolution. The discovery has significant implications for agricultural advancements and understanding disease development and treatment.

SourceCornell University·JournaliScience·DateNov 21, 2025

Current heart attack screening tools are not optimal and fail to identify half the people who are at risk

A new study found that current cardiac screening tools are not optimal and fail to identify half the people who are at risk of having a heart attack. The researchers assessed the accuracy of widely used tools, including ASCVD and PREVENT calculators, and found that nearly half of patients would not have been recommended for preventive ...

SourceThe Mount Sinai Hospital / Mount Sinai School of Medicine·JournalJournal of the American College of Cardiology·TypeData/statistical analysis·DateNov 21, 2025

Brain circuit controlling compulsive behavior mapped

A new study identifies a brain circuit that can drive repetitive and compulsive behaviors in mice, even when natural rewards are available. The researchers used optogenetics to activate the circuit and induce negative states in mice, leading to prioritization of repetitive behaviors over natural needs.

SourceKarolinska Institutet·JournalScience Advances·TypeExperimental study·DateNov 21, 2025