The algorithm introduces a new method for predicting RNA pseudoknots using heuristic modeling with mapping and sequential folding. It identifies information about flexibility and suggests that many biological RNA molecules are optimized by natural selection to fold correctly.
Researchers found that selective attention increases both neural gain and feature selectivity of the human auditory cortex. The study used electroencephalographic event-related potentials to measure task performance in healthy volunteers, revealing a complementary mechanism to existing explanations.
A new systematic review found that 'abstinence-plus' programs, which present safer sex as an option when abstinence fails, can increase abstinence, condom use, and reduce unprotected sex among North American youth. The study also suggests limited evidence of reduced pregnancy rates among teenage girls.
Researchers identified a consistent association between the TRAF1/C5 region and rheumatoid arthritis, suggesting a link to the inflammatory response. The study adds to accumulating evidence that this genetic region is associated with the disease, paving the way for further investigation into its role.
A study found that a third of spam messages advertise health products, including prescription drugs and natural health products. Researchers successfully purchased several controlled substances through these messages.
Researchers constructed a chaperone interaction network for the malarial parasite, highlighting new proteins that can potentially be used in the fight against malaria. The study provides insights into the functions of molecular chaperones and their role in chromatin remodeling, protein trafficking, and cytoadherence.
A new microrobotic system for automated microinjection of zebrafish embryos has been developed, allowing for high-speed injection and successful rates close to 100%. The technology enables large-scale molecule screening for genetics and drug discovery applications.
Researchers found that adult males share desirable fruits with females of reproductive age, particularly with a female involved in most consortships. This behavior is believed to be an attractive trait, drawing positive attention from females and securing social bonds through grooming and mating access.
Fossils from Russia demonstrate that advanced hearing evolved much earlier than previously thought, around 260 million years ago. These early reptiles possessed a surprisingly modern ear with a large eardrum and bone structures similar to those found in modern animals.
A study by York University biologists Amro Zayed and Laurence Packer found that a single mated female solitary bee is likely the founder of an invasive population. This contradicts the 'propagule pressure hypothesis,' which suggests that more individuals introduced to an area lead to a higher success rate of invasion.
Researchers found evidence that the two sides of the retina interact to enhance shape recognition, coordinating their responses with unexpected temporal precision. This study challenges the traditional view that communication between brain hemispheres is necessary for shape recognition.
Researchers found that nonassociative learning enables rats and mice to adapt to artificial rhythms in mechanical ventilation, reducing the need for sedation. Brain calculus involves mathematical calculations to process and filter information, allowing vital functions to learn and adapt.
A new mechanism of neuronal conduction of excitation has been discovered, independent of action potentials, using ceramide production. This finding opens up new perspectives for research and breaks away from the classic concept of neuronal functioning.
RecA family proteins have been found to function as rotary motor proteins to repair DNA damages through a novel mechanism. This discovery opens up new avenues for understanding the molecular mechanisms of RecA family proteins and their roles in cell proliferation, genome maintenance, and genetic diversity.
A pioneering study identified 13 key issues, including community engagement, cultural acceptability, gender inequality, affordability, corruption and poor governance. The research aimed to prevent these challenges from hindering global health research in developing countries.
A study published in PLoS Computational Biology found that the number of memories stored in the brain is limited by the number of connections between neurons, not the number of neurons. This means that a typical human brain can store at most about 500 memories, regardless of its size.
Scientists at Lund University have found a genetic basis for severe urinary tract infections, suggesting a gene that regulates the immune system may be used as a risk marker. This discovery could enable early detection of susceptible individuals, potentially reducing unnecessary examinations and treatment.
Researchers have created 3D images of fruit fly brains using optical projection tomography, shedding light on genetic research into Alzheimer's and other human diseases. The images allow scientists to visualize gene expression patterns and gain insights into the human brain.
Researchers at the University of Alberta have found a new cause of blindness linked to a gene that regulates pH levels in the retina. The study suggests that targeting this process could lead to potential treatments for previously unknown causes of blindness, including hereditary vitreoretinal degenerations.
Research reveals a key mechanism by which gene expression is modified in response to addictive drugs, identifying a splicing factor as a critical regulator. This study provides new insights into the molecular underpinnings of addiction and offers promising avenues for developing novel treatments.
A study found that a mis-regulated plant immune system can establish reproductive barriers, potentially leading to speciation. Researchers discovered that hybrid necrosis, a syndrome affecting unfit hybrids, is caused by a common group of genes being more strongly or weakly active in the hybrids than in their parents.
Researchers found a moderate increase in risk of coronary heart disease associated with very low estimated glomerular filtration rate, according to a new prospective study and systematic review published in PLOS Medicine. The study suggests that renal function may be an important factor in the development of cardiovascular disease.
Researchers found that flies have a complex immune system regulated by AP-1 and STAT transcription factors, which edit and repress the immune response to prevent 'friendly fire'. This mechanism is evolutionarily conserved to maintain balanced immune responses.
Researchers at JCVI have published the first true diploid genome from one individual, Craig Venter's, covering over 2.8 billion base pairs. The study reveals high genetic variation between two chromosomes within an individual and uncovers a total of 4.1 million variants, including 3.2 million SNPs.
Researchers examine hypertrophic scar formation, current treatments, and promising research areas to advance the field. Current treatments for hypertrophic scarring are estimated to cost at least $4 billion annually in the US.
A new study by Yoshida et al. reveals that evolutionary dynamics can mask strong interactions between predators and prey, leading to cryptic dynamics in ecology. The research uses laboratory microcosms to demonstrate how rapid evolution of prey genotypes can influence predator-prey cycles.
Scientists from Berlin developed a theoretical model that shows how an orientation map develops in the brain, allowing for the emergence of place cells and head direction cells. The model analyzes realistic image data to extract information relevant to orientation, leading to the formation of cognitive maps.
A study by Cristina Faria and colleagues found that transgenic Bt maize lines are more susceptible to the aphid Rhopalosiphum maidis than conventional maize. However, this increased susceptibility may be beneficial in regions where aphids are a major problem, as they can aid in controlling caterpillars.
Researchers identified a large fraction of functional transcription factor binding sites near human gene transcriptions, challenging traditional views of complex organism regulation. This discovery could aid in identifying transcriptional networks underlying cellular processes and diseases.
Research in capuchin monkeys reveals a connection between sex, handedness, and brain structure. The study found that male monkeys have a smaller corpus callosum than females, while right-handed individuals have a smaller relative size of the corpus callosum than left-handed individuals. This pattern mirrors findings in humans.
A new study found that repeated ivermectin treatment selects for genetic changes in the parasite that cause river blindness, potentially leading to drug resistance. The research has implications for ongoing onchocerciasis control programs.
Researchers show that traditional mating patterns make men essential to understanding the 'wall of death,' a puzzle in human lifespan. Men's reproductive patterns differ from women's, with earlier and more gradual decline after female menopause.
Researchers find Apert's syndrome is perpetuated due to mutant cells out-replicating normal cells in testes, leading to higher transmission rates. The single base-pair mutation occurs at a frequency 100-1000 times higher than predicted standard mutation rate.
Scientists have identified Marburg virus RNA genome and antibodies in African fruit bats (Rousettus aegyptiacus), providing new insight into a deadly disease that has long baffled epidemiologists. The discovery, published in PLoS ONE, offers potential for understanding transmission and development of a vaccine or drug therapy.
A Taiwanese study suggests that Four-Agents Decoction, an 800-year-old traditional Chinese herbal formula, may exhibit a beneficial effect on primary dysmenorrhea after extended treatment. However, the study did not detect significant pain reduction in the initial cycle. The authors recommend further research with larger sample sizes a...
A new study found that genetic variation in the foraging gene can protect against heat-induced neural failure, leading to potential rapid protection of brain function during extreme fevers. Researchers suggest this could lead to ways to rapidly protect the brain from damage due to extremely high fevers in mammals, including humans.
A study published in PLOS ONE found that all eukaryotic kinases share a common set of substrates, suggesting that despite their diversity, these enzymes have similar functions. This discovery may improve the testing of drugs targeting protein kinases for various diseases.
The Internet platform is being exploited by HIV denialists to spread false information about the virus, posing risks to both uninfected and infected individuals. The scientific consensus confirms that HIV causes AIDS, yet denying this fact can lead to distrust of authority and adoption of ineffective treatments.
A observational cohort study from Côte d'Ivoire found that antiretroviral therapy according to WHO recommendations prevents mother-to-child HIV transmission. The study's findings support the WHO's guidelines for preventing perinatal and postnatal HIV transmission in West Africa.
HIV denialists are spreading misinformation about HIV/AIDS, which can have severe consequences. The scientific community has established that HIV is the cause of AIDS, but denialist groups continue to promote false ideas, putting people at risk of infection and seeking ineffective treatments.
A recent study published in PLOS Medicine found that a free mass distribution program increased ITN use among Kenyan children from 7% to 66%. The high rate of adoption was consistent across different family income levels. The researchers argue that making ITNs freely available is crucial for achieving high levels of use and saving lives.
Scientists at GIS found that DNA replication efficiency increases later in the S-phase, suggesting a novel approach for studying human biology and stem cell research. The discovery could lead to more efficient analyses and tests related to cellular replication.
Two closely related species of East African cichlid fishes evolved divergent immune gene adaptations, explaining their reproductive isolation. These differences in MHC genes influenced mating behavior through olfactory communication.
A study suggests that measuring anemia can be a useful indicator of the burden and control of neglected tropical diseases. Pharmacogenomics, however, still faces limitations in its application for individualized drug dosing based on hereditary factors, according to a review.
Researchers discovered the p75NTR receptor plays a key role in glioma invasion, with expression sufficient to induce aggressive tumor growth. This finding highlights a previously unknown function of the receptor and suggests it may be a novel therapeutic target.
Research at the Natural History Museum found that men's facial attractiveness in the past was linked to their jaw size, cheek flaring and eyebrow shape. The study discovered that shorter faces between the mouth and upper lip created a more attractive appearance to potential mates.
Researchers found that Langerhans cell histiocytosis is associated with the expansion of regulatory T cells, driven by cell survival rather than uncontrolled proliferation. This discovery provides new insights into the underlying mechanisms of the disease.
A decision aid for patients with diabetes was developed by Victor Montori and colleagues, enabling them to make informed choices about statin use. The tool created a conversation about medications, allowing patients to weigh the benefits and risks of statins.
Researchers found that less than a third of treatment guidelines are based on high-quality evidence, highlighting the need for transparent grading systems. The study concludes that clinicians should be aware of this limitation and apply guideline recommendations appropriately to individual patients.
Researchers analyzed emergency department fever and respiratory complaint data to determine influenza-related morbidity by age. The study found that surveillance using electronic data can provide timely and representative information about circulating influenza viruses, with significant age-specific differences.