In a groundbreaking study, great apes showed they can distinguish between true and false beliefs in others, assisting individuals in obtaining an object by exploiting the person's false belief. This advanced social cognition ability is now confirmed for great apes, alongside humans.
A popular online game's data suggests linguistic and cultural factors influence language accuracy. Players were better at identifying languages geographically far apart and with distinct sounds. Cultural associations also play a role in correct identifications.
A new depression diagnosis model suggests a staged approach from wellness to disorder could improve communication and treatment. The model proposes different stages of depression, with patients receiving guided self-care or clinical interventions depending on their stage, to address the dimensional nature of the condition.
A study published in PLOS Computational Biology reveals that people's attitudes towards effort, delay, and risk drift towards those of others due to a phenomenon known as false-consensus bias. This bias increases with small differences in attitude alignment but decreases with larger ones.
A new computational model simulates the role of the brain in Tourette syndrome, suggesting that motor tics arise from interactions between multiple brain areas. The model predicts how dysfunctions in neural circuits can lead to an increased number of tics, which could aid in identifying new treatment targets.
A collaborative study reveals the molecular details of the relationship between Brugia malayi and its endosymbiotic bacteria, Wolbachia. The researchers found that Wolbachia plays a critical role in worm reproduction and survival, making it an essential target for novel drug development.
Exposure to Gardnerella vaginalis, a common vaginal bacterium, awakens dormant E. coli and triggers recurrent urinary tract infections (UTIs) in mice. The study suggests that G. vaginalis damage to bladder tissue can lead to reactivation of E. coli infection.
Researchers randomized 345 patients with type 1 reactions to receive either prednisone or prednisone plus azathioprine for varying durations. While all groups showed some improvement in symptoms, azathioprine failed to reduce recurrence rates or improve outcomes for nerve damage compared to standard treatment.
A decorated raven bone from the Zaskalnaya VI site in Crimea features two intentionally made notches, suggesting a visually consistent pattern. Researchers believe these modifications may have been symbolic additions used by Neanderthals to display a specific design.
A new study found that birds with longer beaks have larger blind areas in front of their heads, resulting in narrower fields of binocular vision. This finding suggests that the size of the blind area plays an important role in birds' vision.
A mathematical model suggests that slime molds can find an optimal physical distribution through a maze when exposed to intermittent light, which mimics real-world changing conditions. This finding aligns with properties of self-organized systems and may influence adaptive abilities in biological systems.
During the West African Ebola crisis, bushmeat consumption decreased overall, but remained constant for wealthier households. Knowledge about Ebola risks reduced consumption among households that knew the risks.
Researchers have discovered a molecule sent by fat cells to the fly brain that signals when energy stores are sufficient, inhibiting feeding behavior. This finding suggests a potential appetite-suppression mechanism in humans and may lead to new weight management strategies.
Researchers have discovered small molecule drugs that activate signaling pathways leading to specific adult brain cell types from stem cells. These findings provide new insights into neural development and repair, identifying several new approved drugs with potential therapeutic value for brain injury repair.
A new study by an international team of scientists has found that Antarctica's biodiversity and conservation management are similar to those globally. Despite some areas of improvement, such as invasive species management, overall progress is lagging behind global targets.
Researchers call for a coordinated effort to understand plant-microbiome interactions to improve plant health and agricultural productivity. Five key research priorities are proposed to address nutrient use, stress tolerance, disease resistance, microbiome assembly, and functional mechanisms.
A new study found that individual Cognitive Stimulation Therapy (iCST) delivered at home by family caregivers has no effect on dementia patients' cognition but improves their relationship with caregivers. The therapy also enhances the caregiver's quality of life.
A new mathematical model of Plasmodium falciparum's metabolism reveals its essential genes and thermodynamic bottlenecks, enabling potential mechanisms to target with drugs. The model integrates genetics and metabolomics data, allowing for the formulation of testable hypotheses and accelerating novel antimalarial drug discovery.
Scientists discovered a novel virus that weakens fungal incompatibility, allowing for transmission of unrelated viruses. This breakthrough could aid in controlling fungal diseases using viruses as a strategy.
Researchers found no association between mosquito abundance and dengue virus risk, but longitudinal indicators showed individuals living with mosquito evidence were more likely to contract dengue. Alternative surveillance frameworks incorporating human outcomes may be necessary for effective dengue control programs.
Analysis of isotopes in bones and teeth from fifth-century cemeteries reveals hybridity among nomads and settlers, suggesting cooperation and coexistence. This challenges the traditional narrative of the Huns' violent attacks on settlements on the edge of the Roman Empire.
A study published in PLOS Medicine found that six unsaturated fatty acids are associated with Alzheimer's disease cognitive symptoms and neuropathology. The researchers analyzed brain tissue samples from older individuals with healthy brains, those with tau or amyloid proteins but no memory problems, and those with Alzheimer's disease.
A new study discovered a chemical compound that selectively stalls the production of specific proteins by targeting the ribosome. This approach offers a promising strategy for treating diseases, including cancer and cardiovascular disease.
A research team developed a polygenic hazard score to estimate an individual's Alzheimer disease risk based on their genetic data and age. The score predicted those with the highest risk were several times more likely to develop AD, with earlier expected onset by up to 10 years.
A study published in PLOS Genetics found that nose size and shape are linked to differences in ancestral temperature and humidity levels. Wider nostrils were correlated with ancestors who lived in warmer climates, suggesting a role for climate in shaping human nasal evolution.
A new analysis method accurately predicts whether a child has autism by analyzing metabolic biomarkers, offering hope for earlier diagnosis. The method, developed by Rensselaer Polytechnic Institute researchers, correctly classified 97.6% of children with autism and 96.1% of neurotypical children.
A study published in PLOS ONE suggests that marine recovery after the late Permian mass extinction was likely delayed by subsequent biotic crises. The researchers found that extinction rates of marine invertebrates peaked twice during the early Triassic, and ecological diversity increased only after a relaxation of environmental stresses.
A trial in UK general practices found encouraging patients with potential memory deficits to seek GP advice did not change their behavior or lead to earlier dementia diagnoses. The intervention did increase the proportion of patients consulting GPs with suspected memory problems.
Scientists have discovered the world's oldest plant-like fossils, estimated to be 1.6 billion years old, in sedimentary rocks in central India. The findings suggest that advanced multicellular life evolved much earlier than previously thought, challenging our understanding of the evolution of life on Earth.
Researchers have characterized the structure of a protein from sand flies that can convey immunity to Leishmania parasites. The SALO protein showed promise in inducing long-term protection against leishmaniasis in mice, with no appreciable similarities to human proteins.
A retrospective analysis of 30,112 home-care clients with dementia found that chronic comorbidities significantly increase the risk of hospitalizations and emergency department visits. The study suggests that targeting high-risk individuals may help prioritize healthcare resources.
Researchers studied 19 virus families and found that cross-species transmission has played a central role in their evolution. Co-divergence is relatively rare compared to cross-species jumps.
A new mathematical model predicts how human brains should grow based on ecological, social, and cultural factors. Early results counter prevailing thought that social influences are required for large brain sizes.
Scientists have identified a previously unknown virus affecting parasitoid wasp species, reducing female offspring and extending lifespan. The discovery has implications for understanding viral transmission in insects.
A study published in PLOS ONE found that college students who consume medium-to-high levels of alcohol and marijuana have a consistently lower GPA over two years. The study tracked 1,142 students for two years after they began college and found that those who used both substances experienced lower GPAs throughout the period.
A new species of ancient fish from southern China has been discovered, exhibiting unique 'shield scale' characteristics. This finding suggests that jawed vertebrates may have evolved earlier than previously thought, with possible implications for our understanding of their origins.
Leaf-cutting ants can identify unsuitable plants for their fungus gardens based on colony waste cues, a study shows. Foraging ants avoided wasteful privet leaves after exposure to treated leaves' waste.
Researchers created high-resolution risk maps for clonorchiasis in China, highlighting provinces with the highest risk of infection and important predictors. The study found that elevation, distance to freshwater bodies, and land cover type were associated with infection risk, informing targeted control activities.
A study published in PLOS Medicine found a significant increase in dementia diagnoses among older adults in the Netherlands over two decades. The researchers analyzed data from primary care networks and estimated an annual growth rate of 2.1% for dementia incidence, with women being more likely to develop the condition.
Researchers developed an RNAi-based strategy to study the link between genes and host-finding behaviors in Steinernema carpocapsae. The method successfully knocked down a gene that codes for FLP-21, inhibiting jumping and sensory perception behaviors.
Researchers found that blocking Keap1 can prevent amyloid-beta peptides damage in mouse nerve cells and shield brain cells from Alzheimer's symptoms. Boosting Nrf2 by blocking its inhibitor has the potential to develop new drugs with fewer side effects for preventing Alzheimer's disease and other neurodegenerative conditions.
Researchers have developed a new non-invasive method to identify the origin of atrial fibrillation, a type of abnormal heart rhythm that increases the risk of stroke and other complications. The technique uses 64-lead electrocardiogram signals to pinpoint the location of the irregular heartbeat.
A new software tool, CRISPETa, has been developed to efficiently delete non-coding DNA in living cells using CRISPR-Cas9 technology. This innovation has the potential to revolutionize our understanding of the genomic basis of disease and may lead to discovery of new disease-causing genes and potential new drugs.
Researchers compared the genomes of a 45,000-year-old mainland mammoth with one from Wrangel Island, which had only 300 animals. The analysis revealed an excess of genetic defects, including loss of olfactory receptors and urinary proteins. This study provides insights into the effects of small population sizes on genome deterioration.
Researchers tracked two African elephant matriarchs for 35 days and found they slept an average of 2 hours a day, with some periods lasting up to 46 hours without sleep. This unique sleep pattern raises questions about when elephants experience REM sleep.
Researchers developed a new relative potency testing program to study the potency of vaccines for tropical diseases. The program found that the Na-GST-1/Alhydrogel Hookworm Vaccine was potent over 60 months of storage, with increased potency in humans living in endemic areas.
A study found that infants with a genetic polymorphism of the serotonin transporter gene are more susceptible to a psychosocial intervention promoting maternal-infant attachment. The probability of secure attachment was significantly higher in those with the short allele of the serotonin transporter gene, compared to controls.
Researchers have determined the atomic structure of African swine fever virus enzyme AsfvPolX, revealing a unique binding pocket and high error rate. This could lead to the development of targeted treatments by blocking the binding pocket with drugs.
Scientists have developed a new mouse model with a healthy immune system to study the Zika virus. The model allows researchers to investigate the immune response to Zika, which could lead to advances in vaccine development and treatment strategies.
A novel mutation in the DNA repair protein ALKBH7 has been associated with an increased risk of prostate cancer in African American men. The study's findings suggest that this mutation may interfere with the protein's normal activity, leading to reduced ability to repair DNA damage.