Researchers discovered a total of 23 new compounds in the endophytic fungus P. dangeardii, including azaphilone monomers, dimers, and trimers with unique structures. The compounds showed significant cytotoxicities, anti-inflammatory, or antioxidant activities.
Researchers have found a way to make cell cultures respond more closely to normal cells, allowing drugs to be screened for toxicity earlier in the research timeline. By changing two components of the media used to culture the cells, they can make liver cancer cells behave more like normal liver cells.
Researchers have updated a pig brain atlas, increasing its resolution and adding a new atlas for adolescent pigs. The updated atlases will enable more precise studies of brain development and the impact of nutritional interventions on human infants. With improved detail, researchers can now study brain development in pigs up to adulthood.
A new study by the University of Waterloo found that using euphemistic language can bias people's evaluations of actions to be more favorable. The researchers used agreeable terms, such as 'enhanced interrogation,' instead of disagreeable ones, like 'torture,' to see how it affects people's judgments.
Researchers at Moffitt Cancer Center discovered that STING gene methylation enables melanoma cells to avoid detection by the immune system. The study suggests that reactivating STING expression through demethylating drugs or genetic approaches can restore interferon signaling and improve immunotherapy outcomes.
Researchers have successfully created chiral objects using DNA origami and gold nanoparticles, exhibiting efficient energy transmission. The discovery enables potential applications in virus detection and optical computing, leveraging the unique properties of plasmonic transmitters.
USC Stem Cell scientist Leonardo Morsut is designing artificial genetic programs to study embryonic development using a $2.5 million NIH grant. He has developed a synthetic version of the naturally occurring Notch system, allowing him to control cell behavior and signaling networks.
A recent national study found that 43.3% of veterans reported positive psychological benefits, including greater appreciation for life and closer relationships, during the pandemic. This is more than five times the number of those who had contemplated suicide.
A German study found that preschool and school children were more infected with SARS-CoV-2 than previously reported cases during the second wave. Antibody tests revealed a significant increase in infections among both age groups, with antibody frequencies up to eight times higher than those reported via PCR testing.
A new study found that adolescents who frequently see billboard or storefront advertisements for recreational cannabis are more likely to use the drug weekly and have symptoms of a cannabis use disorder. Researchers used social media sites and apps to recruit 172 teens, ages 15 to 19, who lived in states with legal recreational marijuana.
Researchers at Purdue University have created a new device that uses composite-based nonlinear transmission lines to generate high-power microwaves for biomedical and defense purposes. The system eliminates the need for bulky auxiliary equipment, making it more portable and efficient.
A study analyzing over 73 million hospitalizations found that site of delivery is a key factor contributing to racial disparities in maternal mortality. Black women are more likely to die from severe maternal morbidity at birth or immediately after childbirth compared to White and Hispanic women.
A new study found that bacteria in the soil enhance plant growth by promoting lateral root formation and improving nitrogen absorption. This breakthrough could lead to more sustainable agriculture practices by reducing fertilizer use and environmental pollution.
Researchers identify a single nocturnal species of Lake Malawi cichlid that exhibits dramatic differences in body clocks, suggesting an acute response to light. The study reveals that nocturnal behavior is associated with increased eye size, providing insights into the molecular and neural basis underlying variation in nighttime activity.
A new study from Washington University in St. Louis challenges the long-held theory that the collapse of Cahokia, a pre-Columbian Native American city, was caused by excessive tree cutting and deforestation. Researchers found no evidence of flooding issues or environmental missteps, contradicting previous narratives about ecocide.
A new study suggests that expanding solar and wind power across the region could alleviate disagreements between Ethiopia, Sudan, and Egypt over Africa's largest hydropower plant. Integrating GERD operation with solar and wind power would provide regional win-win situations, benefiting all countries involved.
Researchers designed and tested 3D printed beetle models to study mate choice in insects. The results show that the models are effective in simulating real behavior, with males preferring chemical signals and color cues over 2D counterparts.
Researchers at Cold Spring Harbor Laboratory found that a protein called Asterix/Gtf1 suppresses small specific regions of mobile genetic elements by binding to tRNA molecules. This discovery could lead to understanding how cells protect themselves against these elements and potentially tame an overly restless genome.
A rare PLD3 mutation in Alzheimer's patients disrupts lysosomal recycling, leading to fewer β-amyloid plaques and less cognitive decline. Boosting PLD3 may have a protective effect against the disease.
The full assembly of human chromosome 8 has been completed, revealing novel genes and potential disease risks. The sequence fills in gaps missing from the current reference genome and provides new insights into immune disorders, brain development, and heart defects.
A new decision support system (DSS) simulates electric power system emergencies in real-time, allowing dispatchers to test actions and evaluate consequences quickly. The system outperforms traditional simulations by five folds, enabling more accurate decision-making.
A new study reveals that domesticated sheep first reached Central Asia around 6000 BCE, challenging the long-held notion of their late arrival to the region. The discovery was made through interdisciplinary analysis of fossil remains and ancient DNA.
A new study found that modern human-like brains evolved comparatively late in the genus Homo and after their first African dispersal. The research analyzed fossilized skulls to discover that early humans retained primitive brain organization until later innovations allowed for unique behaviors and abilities.
Researchers at the University of Arizona have developed a new technique to approximate neuron counts in individual animal brains, providing a more meaningful metric than traditional studies measuring brain size or weight. The study reveals that certain species of bees have a higher density of brain cells than even some species of birds.
After Hurricane Maria, rhesus macaques in Puerto Rico expanded their social networks and became more tolerant of other individuals. The animals formed new connections, resulting in a more tolerant society as a whole.
Scientists have constructed a semiconductor component that allows for efficient information exchange between electron spin and light at room temperature. The new method uses an opto-spintronic nanostructure with quantum dots to control the electron spin of the nanoscale regions, achieving higher spin polarization than previous research.
A University of Tennessee project received two awards for excellence in risk management education, providing financial and marketing strategies to Tennessee farmers. The project was evaluated on outcomes, audiences reached, impacts, and quality of communications.
Researchers aim to create diamond windows that can withstand high levels of radiation, a crucial step towards building safer fusion reactors. The University of Tartu's three-year project involves partnerships with German and Latvian institutions to develop materials and technologies necessary for the DEMO reactor.
Researchers analyzed death records of over 22,000 Holocaust survivors and found a significant increase in cancer and heart disease mortality rates among women and men. The study supports theories that survivors experience general health resilience combined with vulnerabilities to specific diseases.
Researchers discovered novel diarylamides with excellent in vitro UT inhibitory activity, leading to the identification of a promising preclinical candidate. Oral administration of the compound showed a superior diuretic effect in vivo without causing electrolyte imbalance or toxicity.
Researchers found altered brain activity in individuals with chronic sinusitis, affecting neural networks that modulate cognition and response to external stimuli. Despite no significant clinical impairment, participants showed subtle brain region communication changes associated with attention decline and sleep disturbances.
Infants from deaf families exposed to American Sign Language at home looked primarily at the face while watching a signer, whereas those with hearing parents who spoke English barely looked at the hands. The study suggests that sign-language exposure impacts infant gaze patterns and may support later language learning.
Researchers have developed an algorithm to identify features of male zebra finch songs underpinning the distinction between courtship and non-courtship contexts. The study suggests a potential for 'bottom-up' approaches to drive discovery in vocal communication, uncovering previously unidentified features.
The study analyzed in-hospital mortality rates among US patients with SARS-CoV-2 infection over time, highlighting the impact of aging and pre-existing health conditions on patient outcomes. The analysis revealed a significant increase in mortality rates among older adults and those with comorbidities.
Researchers at UBC Okanagan have developed guidelines to use wood-based pulp mill fly ash as an economically sustainable low-carbon binder for road construction. The use of untreated PFA reduces energy consumption and produces low-carbon emissions, making it a safe raw material for environmental applications.
A study in Taiwan found that mountain growth influences the greenhouse effect, with high erosion rates releasing more CO2 than sequestering it. Low erosion rates, on the other hand, lead to greater CO2 sequestration due to weathering processes that bind carbon dioxide.
A University of Gothenburg study found a significant increase in heart failure and stroke cases among men under 40 in Sweden, attributed to rising obesity rates and declining physical fitness. The study monitored over 1.2 million men for 20 years, revealing a sharp decline in heart attacks despite increasing obesity.
IU School of Medicine researchers have developed a blood test that can distinguish between severe depression and bipolar disorder, as well as predict future episodes. The test uses RNA biomarkers to inform tailored medication choices, offering a promising precision medicine approach to treatment.
Researchers developed a time-lapse system to measure membrane tension and recorded the dynamic responsiveness of the KcsA ion channel. Their experiments revealed hysteresis, where channels activate only at high membrane tension and remain active for a short period even after returning to low tension.
Researchers designed and synthesized acrylamide-based DHODH inhibitors for treating rheumatoid arthritis. The lead compound showed encouraging in vivo anti-arthritic effects in a dose-dependent manner.
A Rutgers-led study found that structural racism and anti-LGBTQ policies compound to negatively impact the psychological and behavioral health of Black gay, bisexual men. These oppressive policies must be changed to support their human rights and improve mental and physical health.
A new metric, STAR, measures the impact of human activities on biodiversity, revealing that conserving 9% of land could reduce global extinction risk by half. By abating threats in key areas, companies and countries can report reductions in species loss and contribute to the global biodiversity target.
A study of 940 children found nearly a quarter wanted stronger pain treatment after appendectomies and tonsillectomies, associated with sleep impairments and movement pain. Precautionary administration of non-opioid analgesics may reduce opioid use after surgery.
Researchers at Florida State University have visualized the motion of vortices in superfluid helium-4, a quantum fluid that exists at extremely low temperatures. The study revealed that as vortex tubes appeared, they moved randomly and rapidly away from their starting point, exhibiting superdiffusion.
Researchers found that patients with colorectal cancer had a 57-93% decreased risk of death from their cancer depending on the presence and type of mitochondrial DNA mutations. Mitochondrial DNA mutations were present in almost 60% of tumour samples, suggesting potential for improved treatment outcomes.
Three rapidly rotating brown dwarfs were discovered spinning around their axes once every hour, reaching speeds of about 350,000 kilometers per hour. This extreme rotation rate is ten times faster than Jupiter and poses a risk to the stability of these objects.
Researchers have found that standard definition infrared spectroscopy can be sufficient for accurate diagnosis in urgent situations, challenging the notion that high-definition imaging is always superior. The study provides guidelines for choosing the optimal technology and instrument configuration for clinical work.
Beth Israel Deaconess Medical Center shares five key lessons on health equity from its COVID-19 vaccination campaign, including obtaining reliable patient data and addressing structural inequalities. The health system's approach aims to reach marginalized communities with trust-building strategies.
New research reveals how the immune system influences SARS-CoV-2 evolution, with potential implications for COVID-19 treatment and vaccines. Studies show that immune responses can lead to the emergence of new virus strains, highlighting the need for periodic updates to remain effective.
Researchers at the University of Alabama at Birmingham have discovered a novel protein transport system in Mycobacterium tuberculosis, allowing the release of its toxin, tuberculosis necrotizing toxin (TNT), into human macrophages. The study reveals that two small Esx proteins form pores in membranes to facilitate TNT secretion.
Researchers identified how Wnt proteins orchestrate cell communication and patterning of body axis, revealing the role of Vangl2 in regulating cytoneme formation. Long and branched cytonemes reinforce distant Wnt signalling, leading to altered body axis patterning.
A study by University of Córdoba researchers found that an atmosphere of intrafamily trust reduces the risk of schoolchildren engaging in problematic internet use. Family communication, particularly 'filial disclosure', is crucial in preventing cyberbullying and excessive social media involvement.
New research reveals sex-specific differences in brain stem cell activity and blood vessel density with age. Female mice show more efficient neurogenesis and better neuron migration compared to male mice, suggesting hormonal or genetic influences may play a role.
A medical records study revealed that infant cardiac surgery may be associated with increased hypertension in adulthood. Despite restored healthy heart function post-surgery within 10 years of birth, the study found a potential link between childhood CHD repair and high blood pressure later in life.
A new open-access paper calls for archaeologists and history professionals to collaborate with marginalized communities to redress the harm perpetuated by colonialism. The authors suggest preserving damaged monuments alongside contextual exhibits highlighting acts of resistance against white supremacy, shifting attention from preservat...
Researchers found that a specific gene called MPP8 suppresses the activity of 'jumping' genes, which can protect against certain blood cancers. This discovery may lead to new biomarkers and therapeutic targets for acute myeloid leukemia, the deadliest type of blood cancer.
Researchers discovered a biochemical pathway triggered by SARS-CoV-2 in lung cells, which may explain the disease's difficulty to treat. The pairing of antiviral drugs with inhibitors of this process showed promise in inhibiting the immune response.
A global science collaboration using NICER data discovered X-ray surges accompanying giant radio pulses from the Crab Nebula's pulsar. The finding shows that these bursts release dozens to hundreds of times higher total emitted energy than previously estimated.
The discovery of 12 quadruply imaged quasars using machine-learning techniques will help determine the expansion rate of the universe and address mysteries like dark matter. Quasars are extremely luminous cores powered by supermassive black holes, providing a way to probe the intermediate range of the universe.
Researchers at the Francis Crick Institute found that blocking a specific protein, DNPH1, sensitised BRCA-defective cancer cells to treatment with PARP inhibitors. The discovery suggests a promising potential treatment combination that could lead to improved therapy for patients with inheritable breast cancers.