A rare mummified specimen of the duck-billed dinosaur Edmontosauraus regalis has revealed a fleshy comb on its head, similar to a rooster's red crest. This discovery dramatically alters our understanding of these gentle giants and raises the possibility of similar crests among other dinosaurs.
Researchers have identified a specific region of the brain that responds to electrical stimulation by inducing feelings of determination and motivation. This region, the anterior midcingulate cortex, is linked to emotions, pain, and decision-making, and its stimulation can help individuals anticipate challenges and overcome them.
Researchers create progerin-induced aging in stem cells, accelerating disease modeling by weeks, not years. This breakthrough opens avenues for preventing and treating late-onset disorders.
A new study found that fruit flies exhibit a strong preference for laying eggs on citrus substrates compared to other types of fruit. The basis for this preference lies in a single odorant receptor called Or19a, which is responsible for detecting the characteristic smell of citrus.
Researchers found that gut bacteria changes are associated with autism-like behaviors in mice, which improved when treated with beneficial bacteria. The study suggests a potential therapeutic role for probiotics in treating gastrointestinal and behavioral symptoms of autism.
Researchers used induced pluripotent stem cells to test NSAIDs on human neurons, finding they failed to respond despite initial success in cell and animal models. The study highlights the importance of testing compounds directly in authentic human cells for more reliable drug development approaches.
Scientists have identified a crucial class of neurons responsible for mosquito attraction to human skin odor, offering potential solutions for effective mosquito control. Researchers discovered that compounds targeting these neurons can inhibit the attraction of mosquitoes, paving the way for new repellents and traps.
Researchers have discovered a specialized sound-producing organ in koalas, located outside the voice box, which enables extremely low-pitched mating calls. The organ produces continuous sounds on inhalation and exhalation, similar to a donkey's braying.
Research by Plymouth University and the University of Exeter found that microplastic ingestion can decrease energy reserves in marine worms. The study also revealed that ingested plastic can deliver harmful chemicals to organisms, leading to reduced health. This has significant implications for the food chain and marine ecosystems.
Scientists have identified a new species of wild cat living in northeastern and southern Brazil, with distinct habitats and evolutionary histories. The discovery highlights the need for targeted conservation efforts to protect these endangered species.
Researchers found that newborn babies show signs of body awareness by differentiating their own bodies from others. They exhibit interest in looking at another baby's face when it is stroked synchronously with their own, suggesting a mechanism for self-perception already in place.
Researchers uncover how HIV-1 evades detection by the immune system and triggers protective responses against HIV-2 infection. Modifying the virus to be recognized by the immune system could lead to effective vaccines.
Researchers discovered that Δ9-THC causes an increase in COX-2 levels, leading to memory impairments. Taking an over-the-counter painkiller like ibuprofen can prevent these side effects by inhibiting COX-2 levels.
Researchers identified a gene that plays a fundamental role in regulating body weight and nutritional status. The study found that loss of the gene's function leads to morbid obesity in both humans and mice, providing new insights into pathways controlling body weight and insulin sensitivity.
A study published in Cell Reports found that Amphotericin B, a common antifungal medication, can render a protein important for antiviral defense ineffective in both cells and mice. This makes patients receiving the therapy more vulnerable to influenza and other viral infections.
New insights into how Lyme disease and syphilis spirochetes move through and into organs reveal a key mechanism driving their invasiveness. The findings provide a novel biophysical model that could form the basis for targeting these bacteria's invasion capabilities.
Researchers discovered that anthrax toxin can hide out in human cells for days, avoiding detection by the immune system and cellular machinery. The findings explain why antibiotics are often ineffective against anthrax infections, making it a lingering threat.
Research suggests that nicotine withdrawal is driven by a specific group of neurons in the interpeduncular nucleus. Therapies targeting these cells may help people quit smoking. The findings also hint at potential interactions with other substance-use disorders.
Researchers have identified a novel toxin produced by bacteria that can inhibit bacterial growth by blocking DNA replication machinery, providing new therapeutic avenues for developing next-generation antibiotics.
Researchers discovered that the Lin28a protein enhances tissue repair in adult mice, promoting hair regrowth and repairing damaged ears and digits. This finding opens up potential treatments for adults using drugs to boost wound healing and cellular metabolism.
Research suggests hyper-connected neurons may cause social symptoms in autistic children, leading to potential new treatment strategies and early detection methods. The study found a link between brain connectivity and severity of social impairment in individuals with autism.
Key findings include the potential for affordable bridge therapy, a potential solution for those on ART developing aging-related diseases, and a possible clearing of the latent reservoir that could contribute to a cure. A vaccine is also being explored, with promising avenues including monoclonal broadly neutralizing antibodies.
Researchers have gained new insights into tissue cryo-injury mechanisms, revealing that gap junctions are not the primary pathway for ice crystal propagation between cells. Intercellular connections also play a significant role in cell crystallization during freezing.
Researchers used light-scattering techniques to study the detailed thermodynamics of hemoglobin fibers in sickle cell disease. They found that hemoglobin molecules associate more easily in high temperatures and concentrated solutions, leading to stronger bonds between fibers.
Researchers analyzed butterfly genome sequences, finding initial divergence is restricted to small fraction of genome, with key genes involved in wing patterning. Close comparison of closely related species showed rapid genomic changes occurred in evolutionary time after early differences took hold.
Dogs exhibit asymmetric brain organization, with left-brain activation linked to right-tail wagging and right-brain activation tied to left-tail wagging. This difference affects emotional responses in dogs, who display anxious behavior when seeing a dog with a left-tail wag and relaxed responses when seeing a dog with a right-tail wag.
New studies suggest that immune response to bee venom and other allergens evolved as a defense mechanism, triggering reactions like sneezing and itching. Researchers found that mice developed resistance to deadly doses of venom after exposure to PLA2, an enzyme in bee venom.
A recent study identifies a genetic root to childhood obesity, revealing that patients with mutations in the KSR2 gene have an increased appetite and slower metabolism. The findings suggest that drugs like metformin could provide new treatment options for obesity and type-2 diabetes.
A new study published in Cell suggests that the latent reservoir of HIV-infected patients is significantly larger than previously estimated, making it a major barrier to cure. The findings highlight limitations of current treatment strategies and could lead to the development of more effective interventions.
A study by Nicola Weber and colleagues found that TB-infected badgers are less likely to spread the disease within their own groups but more likely to facilitate spread across a network. Vaccination may be a more effective strategy for controlling TB in badger populations, maintaining social structure intact.
Marmosets exhibit cooperative vocal exchange in a conversational manner, taking turns without interruptions, and follow unspoken rules of etiquette. This unique behavior is distinct from other animals and shares similarities with human communication patterns.
Researchers have discovered how an ALS mutation kills neurons and developed a therapeutic strategy to block this neurodegeneration. They used human skin cells from patients and converted them into neurons, finding that the abnormal genetic expansion causes cell death, dysregulated gene expression, and RNA toxicity.
A new study reveals that microscopic suspension feeders overcome physical constraints by changing their angle relative to surfaces, maximizing access to fresh water and filtering the surrounding water. These tiny organisms filter up to 25% of seawater daily, making them essential for aquatic ecosystems.
A study published in Developmental Cell reveals that birth in mice causes a reduction in serotonin levels, triggering the formation of neural circuits in sensory maps. This finding suggests that birth plays an active role in preparing the newborn for survival outside the womb.
Researchers found that male zebrafish's breeding structures impede tissue regeneration after injury, leading to a sex-specific deficiency. This study sheds light on the tradeoffs between reproduction and survival, suggesting that natural selection may impact regenerative potential.
Researchers discovered distinct EBV subtypes with varying public health risks, including a strain associated with nasopharyngeal carcinoma. This finding highlights the importance of tailoring prevention efforts to specific viral strains.
Recent Nobel Laureate Thomas C. Südhof presents a new model for neurotransmitter release, suggesting that SNARE proteins may not form a pore but instead physically force vesicles and axon membranes to fuse spontaneously.
Researchers have identified irisin, a molecule produced during endurance exercise, as having neuroprotective effects on the brain. Artificially increasing irisin levels in mice improved cognition and reduced symptoms of neurological diseases.
Researchers found that African elephants can use human pointing cues to find hidden food, demonstrating an understanding of this complex gesture. This study reveals that the ability to understand pointing is not unique to humans but has evolved in a lineage of animals.
Human skin stem cells have been found to possess a natural internal clock, which helps them regulate functions such as UV protection in response to circadian changes. This finding could lead to new strategies for preventing premature aging and cancer.
A genetic variant associated with a high risk of testicular cancer in Caucasians may also offer protection against harmful ultraviolet rays, suggesting it may have evolved to benefit light-skinned individuals. The study identifies a DNA sequence variation in the p53 gene that regulates cell functions and tumor formation.
New research finds subalpine lakes contaminated with microplastics, which can enter food webs through freshwater invertebrates. Microplastic particles can also adsorb toxic pollutants and transport them to other habitats.
Experts recommend approaches to standardize quality control, develop cost-effective sharing models, and create large-scale libraries of iPSC lines. These efforts aim to tap into the potential of iPSCs for drug screening, disease modeling, and medical treatments.
Researchers have discovered a key signal that keeps oocytes alive: coenzyme A, which maintains enzyme CaMKII on, preventing cell death. This mechanism appears to be conserved in animals, offering potential therapies for preserving women's egg supply and fertility.
Research reveals that people experience a lower sense of agency for actions associated with negative outcomes, making blame harder to accept. The discovery sheds light on notions about personal responsibility and emotional experiences., People tend to take credit for good outcomes but struggle with accepting responsibility for bad ones.
Researchers used iPSCs from nonhuman primates to develop neural cells depleted by Parkinson's disease, eliciting only a minimal immune response. This breakthrough suggests autologous transplantation could be a viable option for humans, offering promise as a treatment for the disease.
Researchers have discovered anti-tau antibodies that can prevent the accumulation of toxic tau proteins, improving cognitive function and reducing pathology in mouse models. The findings suggest a potential basis for treating Alzheimer's disease and other neurodegenerative disorders.
Research reveals that marine animals have multiple independent clocks, including a 24-hour circadian clock and a tidal clock that regulates daily cycles. The findings suggest that these clocks may be standard operating equipment in animals, with the tidal clock playing a crucial role in coastal organisms.
Cancer biologists use a new approach to study human tumors by transplanting them into mice with crippled immune systems. The results show high genomic fidelity between the original tumors and transplanted cancer cells in mice, providing insights into drug resistance. This approach may lead to more precise treatment choices and faster d...
A study published in Cell Host & Microbe reveals that H7N9 avian flu viruses evolved from distinct H9N2 viruses through a two-step process. The viruses originated in wild birds and then continued to evolve in domestic birds, resulting in genetically diverse strains that could potentially spread among humans.