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Science News for February 24, 2025


Neutrophil-to-lymphocyte ratio and its correlation with tuberculosis infection: a cross-sectional survey based on the NHANES database

A recent study found a significant negative correlation between neutrophil-to-lymphocyte ratio (NLR) and the risk of tuberculosis infection, especially in males and individuals with hypertension. NLR may serve as a biomarker for assessing TBI risk.

SourceNational Center for Respiratory Medicine·JournalJournal of Thoracic Disease·TypeData/statistical analysis·DateFeb 24, 2025

At the origin of mega-magnetic stars

A new study reproduces the formation and evolution of a magnetar using numerical simulations, providing insights into their origin. The research supports the dynamo action theory, which suggests that magnetic fields are amplified through complex motions in proto-neutron stars.

SourceUniversité de Genève·JournalNature Astronomy·TypeNews article·DateFeb 24, 2025

The U-shaped relationship between admission peripheral oxygen saturation and all-cause hospital mortality in acute exacerbation of chronic obstructive pulmonary disease: a retrospective analysis using the MIMIC III database

A U-shaped relationship between admission peripheral oxygen saturation and all-cause hospital mortality was observed in patients with acute exacerbation of chronic obstructive pulmonary disease (AECOPD). The lowest mortality rate occurred at an SpO2 of 89.5%, indicating that lower oxygen levels are associated with increased risk.

SourceNational Center for Respiratory Medicine·JournalJournal of Thoracic Disease·TypeObservational study·DateFeb 24, 2025

DNA origami suggests route to reusable, multifunctional biosensors

Researchers at Caltech developed a DNA origami-based approach to create reusable, multifunctional biosensors for quickly detecting proteins in bodily fluids. The system uses a lilypad-like structure with short DNA strands to bind to molecules of interest, allowing for the detection of larger molecules such as large proteins.

SourceCalifornia Institute of Technology·JournalProceedings of the National Academy of Sciences·DateFeb 24, 2025

Antidepressants linked to faster cognitive decline in dementia

A new observational study suggests that antidepressants can accelerate cognitive decline in people with dementia, while certain medications appear to be less harmful. Researchers analyzed data from 18,740 patients and found that selective serotonin reuptake inhibitors (SSRIs) were associated with the fastest cognitive decline.

SourceKarolinska Institutet·JournalBMC Medicine·TypeObservational study·DateFeb 24, 2025

Novel cigarette pricing policy linked to decrease in sales in California city

A new study found that an Oakland law requiring cigarette prices to increase to a minimum of $8 per pack led to a 15-percent decrease in cigarette sales and a 25-percent decrease in lower-priced cigarettes. The policy may be particularly effective at curbing tobacco initiation among low-income individuals and youth.

SourceBoston University School of Public Health·JournalTobacco Control·TypeObservational study·DateFeb 24, 2025

Bioprocessing method yields high-value products alongside biofuels

Researchers developed a sustainable process to recover valuable products from oilcane bagasse, generating multiple product streams. The process recovers anthocyanins and vegetative lipids for natural colorants and biofuel production, making the process more cost-effective and sustainable.

Childhood trauma and neighborhood disorder impact mental health of injured black men

A new study published in Journal of Urban Health reveals that childhood trauma and perceived neighborhood disorder significantly impact the mental health of Black men in Philadelphia following serious traumatic injuries. The study highlights the critical role of social and environmental factors in post-injury recovery.

SourceUniversity of Pennsylvania School of Nursing·JournalJournal of Urban Health·DateFeb 24, 2025

GLP-1RAs may offer modest antidepressant effects compared to DPP4is but not SGLT-2is

A study found that GLP-1RAs may have a modest effect on depression risk compared to DPP4is, but not SGLT-2is in older adults with diabetes. Researchers used Medicare claims data from 2013 to 2020 and found slightly higher HgbA1c levels in MA beneficiaries, suggesting possible differences in disease management.

SourceAmerican College of Physicians·JournalAnnals of Internal Medicine·TypeNews article·DateFeb 24, 2025

Performance-based reimbursement increases administrative burden and moral distress, lowers perceived quality of care

A longitudinal study of primary care physicians found that performance-based reimbursement increases illegitimate work tasks, moral distress, and lowers perceived individual and organizational quality of care. The study suggests that reducing irrelevant tasks could support physician well-being and healthcare delivery.

SourceAmerican Academy of Family Physicians·JournalThe Annals of Family Medicine·DateFeb 24, 2025

New paper-based device boosts HIV test accuracy from dried blood samples

Researchers at Tufts University have developed a paper-based device that accurately measures HIV viral loads from dried blood samples, outperforming industry standards. The device, called the plasma spot card, was tested on 75 South African patients and showed improved accuracy in detecting drug-resistant mutations.

SourceTufts University·JournalProceedings of the National Academy of Sciences·TypeRandomized controlled/clinical trial·DateFeb 24, 2025

Mount Sinai-led research team identifies underlying mechanisms of age-related dysfunction in glands crucial to eye function

A Mount Sinai-led research team has identified stem cell populations and mechanisms underlying age-related degeneration in meibomian glands, which secrete lipid-rich meibum to prevent tear evaporation. The findings suggest that targeting Hh and EGFR signaling could be a potential therapeutic option for evaporative dry eye disease.

Empathic disequilibrium changes the way we think about empathy and could be a powerful diagnostic and treatment tool for autism, schizophrenia, and other clinical conditions

Researchers found that empathic disequilibrium, an imbalance between cognitive and emotional empathy, better explains symptoms in various clinical conditions. Prof. Florina Uzefovsky's work suggests this concept can be a powerful diagnostic and treatment tool for autism, schizophrenia, and other disorders.

SourceBen-Gurion University of the Negev·JournalJournal of Psychiatric Research·TypeMeta-analysis·DateFeb 24, 2025

Application of cone-beam computed tomography in interventional therapies for liver malignancy: A consensus statement by the Chinese College of Interventionalists

A consensus statement by the Chinese College of Interventionalists promotes CBCT use in liver malignancy therapies, addressing limitations and challenges. The integration of artificial intelligence and technological innovations are expected to refine CBCT's efficacy and safety.

SourceXia & He Publishing Inc.·JournalJournal of Clinical and Translational Hepatology·DateFeb 24, 2025

New research unveils the "dark side" of social media influencers and their impact on marketing and consumer behaviour

A recent study by the University of Portsmouth examines the negative impacts of social media influencers, including misinformation, endorsement of dangerous products, and unrealistic beauty standards. The research calls for more stringent oversight, increased transparency, and ethical marketing strategies to mitigate these risks.

SourceUniversity of Portsmouth·JournalPsychology and Marketing·TypeData/statistical analysis·DateFeb 24, 2025

New cancer vaccine method boosts potency and scope

Researchers at Tufts University have developed a cancer vaccine that amplifies the visibility of tumor antigens to the immune system, leading to potent responses and lasting immunological memory. The vaccine works against multiple solid tumors in animal models, including melanoma, triple-negative breast cancer, and ovarian cancer.

SourceTufts University·JournalNature Biomedical Engineering·TypeExperimental study·DateFeb 24, 2025

A review of thermoelectric applications in photovoltaic modules: structure, performance, and optimization

The review analyzes four coupled systems: PV-TEG, SSPV-TEG, CPV-TEG, and PV/T-TEG, exploring their structures, performances, optimization strategies, economic feasibility, and challenges. Improvements in material innovation, intelligent system design, and integration are needed to enhance performance and reduce costs.

SourceELSP·JournalRenewable and Sustainable Energy·TypeLiterature review·DateFeb 24, 2025

Mobile app tracking blood pressure helps patients

A mobile app developed by Tufts researchers and partnered with two Ghanaian hospitals helped patients with high blood pressure reduce their readings and improve their overall health. The app, called AHOMKA, allowed patients to track their blood pressure at home and share the data with their doctors remotely.

SourceTufts University·JournalHealth Sciences Investigations Journal·DateFeb 24, 2025

Bigger animals get more cancer, defying decades-old belief

Researchers found that larger species have higher cancer rates than smaller ones, with some species even having better natural defences against cancer. The study challenged the long-standing Peto's paradox and provided insight into how superior mechanisms of cellular defence can evolve in larger species.

SourceUniversity of Reading·JournalProceedings of the National Academy of Sciences·TypeData/statistical analysis·DateFeb 24, 2025

Suicide prevention awareness campaigns are not optimized for older adults despite being at highest risk

A new study reveals that most well-known national suicide prevention organizations do not have easily accessible resources targeting older adults, who are at the highest risk of suicide. The findings highlight the urgent need for targeted campaigns and tailored prevention programs that address the unique healthcare needs of older adults.

SourceMass General Brigham·JournalAmerican Journal of Geriatric Psychiatry·TypeContent analysis·DateFeb 24, 2025

New study identifies unique white matter astrocytes with regenerative potential

Researchers at Helmholtz Munich identified distinct subtypes of white matter astrocytes, including one that can multiply and support brain repair. These findings raise possibilities for regenerative medicine and therapies for brain injuries and neurodegenerative diseases.

New AI model measures how fast the brain ages

A new AI model measures how fast the brain ages by analyzing MRI scans, providing a more accurate picture of brain health. The tool closely correlates faster brain aging with increased cognitive decline and dementia risk, offering potential for early biomarkers and personalized treatment.

SourceUniversity of Southern California·JournalProceedings of the National Academy of Sciences·TypeComputational simulation/modeling·DateFeb 24, 2025

Gene expression profiles in respiratory settings in rats under extracorporeal membrane oxygenation

Researchers analyzed gene expression profiles in rats undergoing extracorporeal membrane oxygenation, finding reduced inflammation and increased immune suppression with spontaneous breathing. The study suggests weaning off ventilator support during VV-ECMO may be beneficial for clinical practice.

SourceNational Center for Respiratory Medicine·JournalJournal of Thoracic Disease·TypeExperimental study·DateFeb 24, 2025

Brewing tea removes lead from water

Researchers found that brewing tea can adsorb significant amounts of toxic heavy metals like lead and cadmium from drinking water. The study revealed that steeping time played the most significant role in removing metal ions, with longer steeping times resulting in more effective filtering.

SourceNorthwestern University·JournalACS Food Science & Technology·TypeExperimental study·DateFeb 24, 2025

Burnout from financial stress may lower job satisfaction

A recent study by the University of Georgia found that financial stress can contribute to burnout and reduce job satisfaction. The researchers surveyed over 200 employees and discovered that current worries about money management increased levels of burnout, while expected future financial security improved views on one's job.

SourceUniversity of Georgia·JournalJournal of Workplace Behavioral Health·DateFeb 24, 2025

Technological advances in single-use or disposable bronchoscopy: an evaluation of the Innovative Ambu® aScope™ 5 in a quaternary referral bronchoscopy unit

The study confirms the innovative Ambu aScope 5 Broncho is a rotatable scope compatible with electrocautery, ensuring safe procedures without complications or need for reusable scopes. Single-use flexible bronchoscopes have shown comparable performance to reusable ones in terms of functioning, cost, and environmental impact.

SourceNational Center for Respiratory Medicine·JournalJournal of Thoracic Disease·TypeObservational study·DateFeb 24, 2025

Study finds people prefer AI chatbots when discussing embarrassing health info — but humans when they are angry

A recent study from the University of Kansas found that people tend to prefer AI chatbots when discussing sensitive or embarrassing topics like health information, due to their anonymity and nonjudgmental nature. However, when individuals are angry, they still prefer human interaction.

SourceUniversity of Kansas·JournalInternational Journal of Human-Computer Interaction·TypeRandomized controlled/clinical trial·DateFeb 24, 2025

Improving the distribution of green spaces in Barcelona could prevent 178 premature deaths each year

A study by Barcelona Institute for Global Health estimates that increasing green spaces in the city could prevent 178 premature deaths per year. The proposed Green Corridors plan would lead to a 3.64% increase in green space, reducing mortality rates and heat-related deaths.

SourceBarcelona Institute for Global Health (ISGlobal)·JournalEnvironment International·TypeComputational simulation/modeling·DateFeb 24, 2025

Mortality among US physicians and other health care workers

A recent study found that US physicians experienced lower mortality rates compared to the general population, but this benefit did not extend to female or racial and ethnic minority groups. The study highlights the need for renewed efforts to address health inequities within the healthcare workforce.

SourceJAMA Network·JournalJAMA Internal Medicine·DateFeb 24, 2025

New USF study identifies urgent need to protect coastal marine ecosystems

A new USF study emphasizes the importance of protecting coastal marine ecosystems, particularly tidal flats, which provide critical habitats for fish populations and contribute to global seafood supplies. The team recommends adopting core strategies for boaters, anglers, wildlife managers, and policymakers to prioritize preservation.

SourceUniversity of South Florida·JournalFisheries·TypeObservational study·DateFeb 24, 2025

Unexpected discoveries in study of giraffe gut flora

Researchers have discovered that giraffes maintain species-specific gut flora, even when eating different sets of plants. This finding has significant implications for the conservation of endangered giraffe species, highlighting the importance of understanding their diets and habitats to ensure their survival.

SourceUppsala University·JournalGlobal Ecology and Conservation·TypeObservational study·DateFeb 24, 2025

One day of sleep deprivation can alter your immune system and increase inflammation

Research reveals that even a single night of sleep deprivation can alter the profile of immune cells, similar to those found in individuals with obesity. This suggests that the immune system is highly sensitive to sleep patterns and may contribute to long-term inflammatory states and increased risk of disease.

SourceAmerican Association of Immunologists Inc·JournalThe Journal of Immunology·TypeExperimental study·DateFeb 24, 2025

Research suggests common viral infection worsens deadly condition among premature babies

Researchers found that cytomegalovirus infection significantly worsens necrotizing enterocolitis in mouse models, triggering inflammation and disrupting energy production. The study provides insight into the underlying mechanisms of NEC and may lead to the development of new treatments for this devastating condition.

SourceJohns Hopkins Medicine·JournalCellular and Molecular Gastroenterology and Hepatology·DateFeb 24, 2025

Reporting of early symptoms of dementia varies across ethnic groups, study finds

A new study found that people from minority ethnic groups are more likely to report non-cognitive symptoms, such as pain and dizziness, before receiving a dementia diagnosis. This can lead to delays in diagnosis and impact health inequalities. The research aims to improve culturally fair recognition of possible dementia in primary care.

SourceQueen Mary University of London·JournalAlzheimer s & Dementia·TypeObservational study·DateFeb 24, 2025

Mega-iceberg from Antarctica on collision course with South Georgia: Harbinger of things to come?

Researchers from Utrecht University studied icebergs' routes during rapid ice cap deterioration and found evidence of ancient material from Antarctica near South Orkney Island. The study suggests that Antarctica had an ice cap in the late Eocene, and large icebergs could survive in warm ocean conditions.

SourceUtrecht University·JournalClimate of the Past·TypeComputational simulation/modeling·DateFeb 24, 2025

Chung-Ang University uncovers porcine reproductive and respiratory syndrome virus’s impact on swine immunity

Researchers analyzed protein-coding RNA transcripts from single cells and lung fluid of infected pigs, monitoring immune cell alterations triggered by PRRSV strains of varying virulence. They found that high-virulence PRRSV caused severe lung damage and immune imbalance, while less virulent strains led to delayed lung damage with fewer...

SourceChung Ang University·JournalNature Communications·TypeExperimental study·DateFeb 24, 2025

Predictors and reasons for unplanned early rehospitalization in lung transplant recipients: A retrospective cohort study

Lung transplant patients with higher preoperative nutrition risk scores and longer post-operative mechanical ventilation durations are more likely to experience unplanned early rehospitalization within 30 days. Improving preoperative nutritional status and reducing mechanical ventilation duration may help reduce early readmissions.

SourceNational Center for Respiratory Medicine·JournalJournal of Thoracic Disease·TypeObservational study·DateFeb 24, 2025

Not all heart inflammation is the same

A study published in Nature Cardiovascular Research identified distinct immune signatures in myocarditis caused by SARS-CoV-2 infection and mRNA vaccines compared to non-COVID-19 myocarditis. The findings suggest a stronger immune response in post-COVID-19 myocarditis, while the inflammation appeared milder in post-vaccination cases.

SourceMax Delbrück Center for Molecular Medicine in the Helmholtz Association·JournalNature Cardiovascular Research·TypeExperimental study·DateFeb 24, 2025

Unlicensed retailers provide youths with easy access to cannabis in New York City

A study by Columbia University found that unlicensed dispensaries in New York City often lack effective age verification processes, allowing youth access to high-potency cannabis. Licensed retailers, on the other hand, were more likely to follow state regulations and post certificates of analysis for their products.

SourceColumbia University Irving Medical Center·JournalPEDIATRICS·TypeObservational study·DateFeb 24, 2025