Researchers identified regulatory sequences that act like zip codes, determining where odour receptors are expressed in olfactory neurons. These elements positively and negatively regulate receptor expression, suggesting a broader role in nervous system development.
Researchers developed a novel, computer-based approach to study lipoprotein profiles and identify patients at risk for cardiovascular disease. By simulating every single lipoprotein in blood plasma, the model revealed possibly clinically-relevant abnormalities that would remain undetected by evaluating only LDL and HDL.
A new statistical approach has been developed to study genetic variation, allowing for a finer detail of human migration history. The technique analyzes shared parts of chromosomes across the entire human genome, identifying smaller genetic contributions and surprising findings such as Mongolian ancestry in Native American Pima people.
Researchers found evidence of a large ornithopod dinosaur and a herd of 11 sauropods walking together at the same speed. The site preserved footprints that provide insights into dinosaur herding behavior, a rare example of social behavior for reptiles.
Researchers discovered that snakes have undergone massive functional redesign of core metabolic proteins, enabling their remarkable physiological adaptations. This study provides insight into vertebrate physiology and opens up new directions for research on molecular evolution and adaptation.
Researchers have successfully inserted DNA from the extinct Tasmanian tiger into mouse embryos, demonstrating a functional response in developing cartilage and bone. This breakthrough has significant implications for the development of new biomedicines and gaining insights into the biology of extinct animals.
New guidelines provide guidance for medical researchers on how to handle ancillary care needs in developing countries. The four Ps - Positive obligation, Planning Partnership, and Practical steps - offer a framework for addressing these needs.
Researchers accessed the NINDS rt-PA Stroke Trial dataset to address concerns about its design, results, and ramifications. They found the process of gaining access to the information convoluted and difficult, with some crucial data missing.
A national survey of teachers found that one in eight high school biology teachers present creationism as a scientifically valid alternative to Darwinian evolution. The majority of teachers spend less than five hours on human evolution, suggesting pressure from the community may influence teaching practices. Raising certification stand...
Researchers found that tracking patients' medication adherence was more accurate than CD4 test results in identifying those at risk of treatment failure. Adherence assessments could be used for early identification of high-risk patients, averting health impacts and prioritizing limited viral load testing.
Researchers found that pointed wingtips and reduced weight per wing area reduce flight costs for migratory birds. Climate change may exacerbate this effect, altering bird migration patterns and energy budgets.
A study published in PLOS ONE found a widening gap in death rates between Americans with less than high school education and college graduates. The study analyzed data from 1993 to 2001 and found that mortality rates among the most educated decreased significantly, while those with less education remained relatively unchanged.
A new study found that only 113 articles about neglected tropical diseases were published in leading international media from 2003 to 2007. This lack of coverage is particularly concerning given the significant burden of NTDs on public health, including widespread illness, poverty, and suffering.
Researchers found that mantis shrimp can see colours from ultraviolet to infrared and measure four linear and two circular polarisations, enabling them to detect subtle changes in light. This unique talent presents a new concept of polarisation vision, allowing shrimps to navigate and find food more effectively.
Researchers at the University of Akron discovered that temperature and humidity significantly impact a gecko's ability to stick to glass. The study revealed that under humid conditions, geckos can cling with twice the force as in dry conditions. Conversely, high temperatures reduce their adhesion, making humidity level less crucial.
A study published in PLOS ONE demonstrates that the spontaneous activity of small neuronal networks in the cortex consists of highly structured patterns rather than random noise. These patterns are shaped by network connectivity and can be used to inform researchers about the underlying anatomy.
The EPA dismissed Deborah Rice, a highly respected toxicologist, after the chemical industry complained about her views on deca's health hazards. Herbert Needleman argues that this trend is not new and unique, citing his own dismissal for speaking out on lead poisoning.
A review of 28 studies found that 90% of participants wanted to receive study results, citing clinical importance and respect for participants. While sharing results can cause negative emotions, the majority reported feeling it was important to receive them.
Research found that individuals' expectations of recovering from whiplash injuries are crucial in predicting their likelihood of recovery. Patients who expected to make a full recovery were more likely to have fewer disability symptoms six months later.
A new study found that the risk of hospitalization from being violently assaulted increases when local alcohol sales rise. For every extra 1,000 liters of alcohol sold per store per day, the overall risk of being hospitalized for assault increased by 13%. The risk was highest in men, youths aged 13 to 20 years, and those living in urba...
Researchers have developed a new computational method to reconstruct viral populations with improved accuracy and efficiency. This method, based on pyrosequencing, reduces error rates and yields faster results at a lower cost.
Researchers found a small protein secreted by some fungal strains can suppress tomato disease resistance genes, but a third gene targets this protein, rendering the plant fully immune. The study provides a new strategy for durable disease control based on resistance gene combinations.
A new study reveals that diet and lifestyle are not the only factors influencing blood protein levels, with genetics playing a significant role. The study identified variations in genes associated with key proteins like HDL cholesterol and interleukins, which play roles in inflammatory diseases.
Research finds symmetry and sexual dimorphism in human faces are related to attractiveness, supporting the idea that they signal genetic quality. The study also reveals similar patterns in non-human primates and different human populations, indicating universal signals of quality.
A study by McGill University scientists found that child abuse may cause differences in epigenetic marking on genes in the brains of men who killed themselves. The researchers also discovered that simple maternal behavior during early childhood has a profound effect on genes and behavior, which can be reversed through treatments.
A PLOS study highlights key conservation areas for threatened frogs and toads in Latin America, emphasizing the importance of considering life-history traits. The research reveals that regions with aquatic larval stages are crucial for species like Phyllomedusa ayeaye, while those without tadpoles require targeted conservation efforts.
Researchers have elucidated the mechanism of iron uptake system in M. tuberculosis, a promising target for intervention. The study reveals an exporter-importer system that exports siderophores and imports iron-bound forms, providing a crucial foothold to tame this deadly pathogen.
A recent study in PLOS ONE investigates the loss of seed dispersal interactions on Mauritius and its impact on regeneration. The Janzen-Connell model suggests that seeds need to be dispersed away from adult trees, but many fleshy-fruited plant species lack crucial seed dispersal interactions.
A new study identifies a specific genetic variation in the FGFR2 gene that alters its binding to regulatory proteins, leading to increased expression and an elevated risk of breast cancer. The mutation occurs in non-coding regions of the gene, affecting its regulation rather than protein production.
A study published in PLoS Medicine found that high HIV loads cause CD8+ T cell exhaustion, while reducing antigen levels allows these cells to recover their functions. This suggests that immune exhaustion is a consequence of persistent HIV replication rather than its cause.
A program in rural India found that round-the-clock rapid HIV testing in labor wards reduced the risk of mother-to-child transmission. The study demonstrated the feasibility of such a program, which led to reduced morbidity and improved health outcomes for mothers and their children.
Researchers identified BILBO1 as crucial for Flagellar Pocket formation in trypanosomes. The protein is essential for the structure's functions, including endo- and exocytosis. Inhibition of BILBO1 function is fatal to the parasite.
Conservation efforts in Madagascar could avert catastrophic biodiversity loss with pro-active programs. The country harbors
Researchers have developed a new immunotherapy technique called OPAL therapy that stimulates immunity and controls virus levels in HIV-infected individuals. The treatment involves reinfusing fresh blood cells with overlapping peptides, showing promise in preventing AIDS progression.
A new ultrasensitive assay developed by City of Hope and California Department of Public Health can detect botulinum neurotoxin with high accuracy, improving food safety and diagnosis. The test is ten thousand times more sensitive than current methods and has potential applications in diagnosing other diseases.
Researchers have found that the ancient human 'Nutcracker Man' did not eat nuts, contrary to previous assumptions. The study used microscopy and fractal analysis to examine marks on the teeth of Paranthropus boisei, suggesting that dietary preferences were based on scarcity rather than a regular diet.
Researchers found that bats emit exceptionally loud sounds of up to 140 dB SPL to detect small insects in air using echolocation. The study's results showed that the high frequencies emitted by the bats serve as a countermeasure to attenuation, allowing them to effectively hunt despite the limitations of ultrasonic frequencies.
A new study published in PLOS ONE reveals that mice and humans exhibit similar behavioral patterns, with no differences in statistics between resting periods and activity durations. This discovery has implications for the development of new treatments for depression and challenges current models of human-specific disorders.
Researchers have found evidence of mesenchymal stem cells in the periosteum of deer pedicles, which are responsible for antler regeneration. The study suggests that understanding this unique process could have significant implications for regenerative medicine.
A systematic review published in PLoS Medicine identified a need for standardized measurements in pediatric clinical trials due to the lack of parent and child involvement in selecting outcomes. The study found that only three groups asked parents about the outcomes, while none involved children directly.
Researchers reconstructed ancient Cambrian and recent food webs, showing strong similarities in feeding relationships among marine species. These findings suggest that network structure of food webs may have become established during the initial explosion of animal life, providing insights into modern ecology.
Research published in PLOS Genetics found that hormone-dependent and independent breast cancers originate from distinct genetic variants, suggesting separate biological pathways. This discovery could guide future research into prevention and treatments for the different cancer types.
In a study published in PLOS Computational Biology, researchers demonstrated the application of the efficient coding principle to the sense of smell in male moths. They found that olfactory neurons process stimuli that occur most frequently, optimizing the detection of pheromone molecules.
A Brazilian study found that urban slums are a source of leptospirosis transmission due to poor sanitation and rodent-borne disease. The study identified households with Leptospira antibodies clustering in squatter areas, highlighting the need for social factors-based prevention strategies alongside improved sanitation.
A scientific study found that fruit-eating bats ingest mineral-rich water and clay to detoxify secondary plant compounds in fruits. Female bats take up large amounts of these minerals to counteract the detrimental effects on their embryos and juveniles.
A new, simplified economical method of giving rabies vaccine has been shown to stimulate anti-rabies antibodies just as effectively as the current standard vaccine regimen. The 4-site intradermal regimen is cheaper and more practical, with wider safety margins and suitability for use in financial-constrained areas.
The freshwater herring of Lake Tanganyika have a marine invasion origin dating back 25-50 million years. Their DNA analysis suggests that they colonized the lake during its early formation, leading to their unique diversity.
By the end of 2006, all countries in the Americas had included Hib vaccine in their immunization schedule. However, efforts are still needed to strengthen invasive bacterial disease surveillance and improve vaccination coverage. The successful introduction of Hib and pneumococcal vaccines could reduce global severe pneumonia burden by ...
A new study found that between 1983 and 1999, death rates in women increased in low-income counties due to chronic diseases like smoking, high blood pressure, and obesity. Inequality in life expectancy worsened across US counties, particularly for disadvantaged populations.
A newly discovered arenavirus, Chapare virus, has been identified in a fatal hemorrhagic fever case in rural Bolivia. The virus produces clinical hemorrhagic symptoms similar to those associated with other New World arenaviruses, but genetically it is distinct from Junin, Machupo, Guanarito, and Sabia viruses.