Researchers confirm live Zika virus infects reproductive tract, replicates and causes disease in mouse models. Hormonal injection timing affects vulnerability to infection, with diestrus-infected mice showing no signs of disease despite viral persistence.
A new study suggests the Galapagos Islands' incredible biodiversity emerged approximately 1.6 million years ago when the Equatorial Undercurrent collided with the archipelago, bringing nutrient-rich waters to the surface. This event allowed for the growth of unique plants and animals that thrive in the islands' ecosystem.
Researchers used computer technology to learn how past societies responded to climate change, identifying crops and strategies that can be useful today. The studies found that drought-tolerant crops like Hopi corn and foxtail millet could become crucial for human survival in areas impacted by climate change.
The study found that the rotavirus vaccination programme resulted in a significant decrease in GP visits and hospital admissions for acute gastroenteritis, with an estimated 87,376 visits averted in England. This translates to an annual reduction of £12.5 million in healthcare costs.
The HIV Prevention Trials Network (HPTN) has launched a new study, HPTN 083, to evaluate the safety and effectiveness of injectable cabotegravir for PrEP in men who have sex with men and transgender women. The study aims to provide an alternative to daily oral tenofovir disoproxil fumarate/emtricitabine (TDF/FTC) for HIV prevention.
New research suggests that chimpanzees do not display a tendency to help others, nor are they spiteful, when there is no anticipated benefit to themselves. In two experiments, chimpanzees could determine whether or not a peer received access to food and showed no preference for either providing access or denying access.
A study found that around two-thirds of women with anorexia nervosa and bulimia nervosa will eventually recover from their eating disorders. Recovery tends to happen more quickly for those with bulimia, while anorexia recovery takes longer on average.
A new study reveals that salamanders travel an average of six miles and as far as nine miles to reach breeding sites, likely due to the physiological costs of not having sex. This long-distance migration may be crucial for their survival and genetic health.
Scientists found that female mice are more susceptible to vaginal Zika virus infection during a specific stage of their reproductive cycle. The study suggests that sex hormones play a role in allowing the virus to establish itself in the reproductive tract and spread beyond it.
The USPSTF recommends against routine serologic screening for genital herpes infection in asymptomatic individuals, citing the lack of a long asymptomatic period and the high false-positive rate of current tests. This decision is based on the low test accuracy and potential harms of early detection and intervention.
Assistant Professor Leah Shriver aims to find new ways to promote nervous system regeneration and prevent destruction of brain cells in multiple sclerosis patients. She plans to study the cuprizone intoxication model to understand mechanisms contributing to oligodendrocyte and myelin loss.
Researchers have developed environmentally friendly organic solar cells using nanomaterials, increasing efficiency and reducing toxic substances. Additionally, hybrid capacitors with enhanced storage capacity and faster charging capabilities have been created using nano-diamond composites, paving the way for more efficient energy stores.
Tropical Cyclone 02S has developed strong thunderstorms, with cold cloud top temperatures near -63°F (-53°C), according to NASA's Aqua satellite data. The Joint Typhoon Warning Center predicts the storm will curve toward the southeast and make landfall south of Broome on Dec. 25.
A new study found that taking anticholinergic medications daily increases the likelihood of inpatient admission by 11% over a year. The study analyzed prescription dispensing data from Regenstrief Medical Record System and calculated cumulative anticholinergic burden, which is associated with increased healthcare utilization.
A NASA-developed camera, equipped with a moth's eye-inspired absorber technology, is now operational on the SOFIA aircraft. This innovation allows for greater sensitivity in far-infrared astronomy, enabling scientists to study early stages of star and planet formation, as well as map magnetic fields around supermassive black holes.
Scientists at the Salk Institute have developed a 3D mini-brain model grown from human stem cells, which is structurally and functionally more similar to real brains than existing 2D models. This breakthrough model may help understand brain development and neurological diseases like Alzheimer's or schizophrenia.
Scientists have detailed the structure of TREM2, a molecule implicated in Alzheimer's and other neurodegenerative diseases. The study shows that certain mutations alter the surface or internal structure of TREM2, leading to impaired function and neurodegeneration.
Researchers found that online reviews on Yelp reveal insights into patients' experiences with hospital amenities, staff compassion, and family care, areas neglected by standard surveys. By incorporating these comments, healthcare providers can enhance patient satisfaction and differentiate their services.
Research published in Thorax found a significant association between high dietary processed meat intake and worsening asthma symptoms. Participants who consumed four or more weekly servings of cured meats experienced the greatest worsening of symptoms.
Researchers mapped carbon recovery in Amazonian forests after logging activities, finding highest potential in the Guiana Shield and western regions. Surviving trees may be more reliable for storing carbon than newly recruited juveniles.
Researchers confirm the use of a simple sniff test as a supplementary tool for diagnosing mild cognitive impairment and Alzheimer's dementia. The study found that combining the sniff test with a standard cognitive assessment significantly improved diagnostic accuracy, particularly in identifying people at high risk of worsening.
Researchers at IRB Barcelona have discovered 10 new drug combinations that show high synergy in treating breast cancer, outperforming individual treatments. These combinations aim to overcome treatment resistance by attacking tumour cells from multiple angles.
A new study by UCR psychology professor Weiwei Zhang found that familiarity with a subject can boost memory capacity. Participants were shown Pokémon characters and asked to remember them in working memory; those who were more familiar with the characters remembered more.
The University of Notre Dame's Global Adaptation Initiative is assessing the climate vulnerability and readiness of over 250 US cities with a population over 100,000. The Urban Adaptation Assessment integrates social equity analysis to investigate how vulnerable groups are disproportionately harmed by climate hazards.
UT Southwestern Medical Center researchers developed a nanosensor that amplifies pH signals in tumor cells, distinguishing them from normal cells. The sensor helps surgeons see tumors better during surgery, potentially improving survival and quality of life for cancer patients.
Researchers found correlations between circulating tumor DNA (ctDNA) levels and ovarian cancer size, as well as patient response to treatment. The study used ctDNA carrying mutations in the TP53 gene to predict disease progression and treatment response, offering potential for early diagnosis and alternative treatment options.
Researchers found pelvic floor muscle training significantly reduced prolapse symptoms in women with early signs of prolapse. The study recommended that women should be advised to undertake pelvic floor muscle training even before experiencing symptoms.
Research suggests e-cigarette use does not make smoking more appealing to non-smokers, but rather discourages tobacco consumption.
Researchers at UC Berkeley observed the brain's re-tuning process when listening to previously unintelligible speech after priming. The study confirms speculation that neurons in the auditory cortex continually tune themselves to pull meaning out of a noisy environment, enabling individuals to quickly comprehend garbled speech.
Researchers at Yale University developed a novel approach to detect exoplanets by analyzing signal fluctuations in star spectral intensity. By studying all signal information together, they can refine the search for Earth-like planets and improve traditional methods.
Researchers found that a genetic mutation in protein NOD1 increases susceptibility to human cytomegalovirus (CMV) infection. Studies with human cells and mice showed decreased CMV replication when NOD1 was activated, suggesting a key role in controlling the virus.
Researchers developed a blood test to predict ovarian cancer patients' response to chemotherapy using tumour DNA levels. The test identified patients whose tumour DNA count dropped by more than half after one cycle of chemotherapy as those likely to respond well to treatment.
A study finds that Arctic Inuit and Native American cold adaptations originated from an extinct hominid population related to the Denisovans. The archaic variant of the TBX15/WARS2 region was introduced into modern humans during their expansion, potentially providing a unique adaptive trait.
A study of 3,063 children and adolescents with acute concussion found that physical activity within 7 days of injury was associated with reduced risk of persistent postconcussive symptoms. Engaging in early physical activity was linked to a lower risk of PPCS, regardless of intensity or exercise type.
Researchers from Forschungszentrum Jülich and LMU Munich use angle-resolved photoemission spectroscopy to visualize band structure shifts in response to magnetic field changes. This observation confirms the predictions made by Einstein's theory of relativity, which suggests that electrons can sense the direction of a magnetic field.
The study identifies a new nickel transporter crucial for the pathogen's ability to colonize the stomach and survive its acidic environment. The discovery sheds light on the genetic modifications that enabled H. pylori to adapt to this hostile environment, highlighting the importance of metals in bacterial pathogenesis.
The study estimates that about 3,000 tons of PHCZs lie in the sediment under lakes Michigan, Superior, and Huron, with Category 2 PHCZs likely from man-made sources. Most PHCZs, however, are believed to result from natural processes.
The National Endowment for the Humanities has awarded grants to University of Houston faculty members Rex Koontz and Julie Tolliver. Koontz will oversee a collaboration with the Museum of Fine Arts-Houston to expand its digital archive of Latin American art, while Tolliver will complete her book on Francophone independence literatures.
A protein called Peroxiredoxin 1 (PRDX1) has been identified as a key player in protecting telomeres from oxidative damage. By analyzing the protein composition of telomeres across the cell cycle, researchers found that PRDX1 functions as an antioxidant enzyme, preserving telomeric DNA for extension by telomerase.
Melanin, a natural compound found in mammals, has been successfully synthesized using a novel route that enables its use in sensors and other applications. This breakthrough material is promising for developing miniaturized implantable devices capable of altering and controlling electrical signals in the human body.
The NOAA has awarded $8 million in funding for 11 coastal resiliency projects across the US, focusing on wetland restoration, coral reef conservation, and dam removals. These projects aim to enhance ecosystem resilience and reduce risks from extreme weather events.
Researchers identified gene mutations associated with steroid resistance in pediatric T-cell acute lymphoblastic leukemia, leading to poor clinical outcomes. A new therapeutic approach targeting individual signaling proteins restored steroid sensitivity in leukemic cells from patients.
Researchers found that NOX4 inhibits epithelial-amoeboid transition, a process contributing to liver cancer progression. Low expression of NOX4 is associated with poor prognosis and high Rho protein expression.
Astronomers used VLA and ALMA to study distant galaxies, revealing details of dust-shrouded regions. They found intense star formation occurred throughout galaxies, contrary to present-day high rates in smaller regions.
Researchers used neutrons to determine the structure of an important enzyme in Helicobacter pylori, offering a new point of attack for medications. The findings provide insights into the enzyme's mode of action, enabling the development of molecules that can block this process and target the bacterium effectively.
A mathematical model by Carl Bergstrom and colleagues explores the effect of publication bias on fact canonization in science. The study found that lower publication rates for negative results increase the risk of false canonization, but suggest that publishing more negative results could help minimize this risk.
Epigenetic changes in melanoma cells have been identified as key drivers of cancer metastasis. The study, published in Oncotarget, found that these changes can be reversed, making them a potential target for new therapies.
Osaka University researchers have developed a catalyst that efficiently produces hydrogen from organosilanes at room temperature without additional energy input. The catalyst, composed of gold nanoparticles supported on hydroxyapatite, demonstrated high turnover frequency and recyclability.
A new study found that adolescents are up to 183% more likely to carry out violent acts if their friends have also committed the same act. The contagion extends beyond friends to up to four degrees of separation, making it essential to stop violence in one person to prevent it from spreading to others.
Scientists have discovered metabolons, complex enzyme clusters, for the first time using molecular movie technology. This breakthrough reveals plants' secret medicinal toolbox and unlocks new possibilities for harnessing plant-based medicines.
A team of astronomers from ANU has found a massive galaxy supercluster near the Milky Way, which influences the motion of our Galaxy. The Vela supercluster is one of the largest concentrations of galaxies in the Universe, and further studies will confirm its size.
Researchers found that fibrosarcoma cells can't perform piston movement to get through tight squeezes, leaving them intact while normal cells use molecular motors to muscle forward.
Researchers discovered that bags of potting soil on Guam's island are a breeding ground for invasive coconut rhinoceros beetles. The beetles spread through holes in plastic bags, which customers unknowingly bring home for their gardens.
Scientists have discovered a potential biomarker, GHRH-R, for gastric cancer, which can aid in earlier diagnoses and better staging. The team also found that the GHRH-R antagonist MIA-602 inhibited gastric cancer growth in cell lines and human xenografts.
Mammals have evolved a specialized germline in their sex cells to pass on high-quality mitochondria, driven by the need to counteract rapid genetic mutations. This process restricts genetic variation in offspring, but allows for the transfer of better-functioning mitochondria.
A Drexel University study found that black males are nearly three times as likely to be killed by police action as white males, with Hispanic males one-and-a-half times as likely. The study used national death records and found a significant racial disparity in law enforcement-related deaths.
Researchers at KAUST have developed a simpler way to assemble silver nanoclusters, opening up new opportunities for catalysis and opto-electronics. The clusters can be modified with atom-by-atom control, allowing their properties to be tailored for specific applications.
Researchers developed a dual strategy combining biomimetic beads and anti-PD1 therapy to boost killer T cell immunity against skin cancer. The combination technique increased T cell activation by 35% compared to artificial beads alone and 72% compared to anti-PD1 alone.
Ron Davis, a Scripps Florida scientist, has been awarded a $5 million Outstanding Investigator Grant to investigate the biological processes underlying memory formation. The grant aims to understand how the brain organizes memories and suppresses their formation, with potential applications in treating neurological disorders.
Research by Maria Gartstein and Sam Putnam found that toddler temperament differs significantly across cultures, with Chilean infants being the most active and Polish babies displaying sadness. The study suggests that parents' cultural values influence their children's behavior and overall temperament.