A new imaging approach allows scientists to watch spliceosome assembly in motion, revealing a surprise: the process is reversible and has 'dead ends'. This breakthrough helps understand alternative splicing, crucial for gene expression and protein diversity.
A study by Richard Slatcher found that testosterone levels are associated with men's dominance behaviors and success when competing for an attractive woman. Men with high testosterone levels and a strong desire for social dominance were more likely to suppress their competitors' ability to attract the woman.
Researchers found that adult brothers and sisters frequently live together in hunter-gatherer societies, promoting interaction among residential groups. This unique social structure may explain why humans evolved an emphasis on social learning and cultural transmission.
Researchers discovered a new mechanism by which air pollution particles form, with heavier compounds contributing most to particle formation. This discovery has significant implications for understanding and predicting urban air quality.
A new high-speed robot screening system has been unveiled to test 10,000 chemicals for potential toxicity, marking a significant advancement in the Tox21 collaboration. The system will provide information useful for evaluating the safety of industrial and consumer products, food additives, and drugs.
A study published in Brain Research found that nutritionally deprived newborns are programmed to eat more due to reduced neurons in the brain's food intake region. This suggests maternal nutrition plays a critical role in preventing obesity and related diseases.
Researchers used two well-known optical illusions to study how the brain assesses relative size, revealing that environmental clues affect perception after three-dimensional image processing. The Ponzo illusion was found to hold true regardless of eye use or presentation order.
Researchers found that a light-sensing receptor called rhodopsin plays a critical role in sensing temperature, particularly in the comfortable range. The discovery suggests that rhodopsin may have been used originally for temperature detection before its function as a light receptor.
A survey of physicians in dermatology, cardiology, and orthopedics found that 75% of dermatologists and 91% of orthopedic specialists use dietary supplements, while 66% and 72% recommend them to patients respectively. The most commonly used supplements were multivitamins and omega-3/fish oil supplements.
A new study in Washington State found that referring patients to high-volume hospitals for operations did not improve overall outcomes. Despite increased volume-based referrals, rates of mortality, readmission, and complications remained largely unchanged.
Researchers have discovered the genetic fault behind a rare skin cancer that spontaneously heals after growing rapidly. The faulty TGFBR1 gene leads to unusual behavior in these self-healing squamous epithelioma tumors, which may help predict clinical effects of targeted therapies.
The Project on Emerging Nanotechnologies has updated its inventory of nanotechnology-enabled consumer products to over 1,300 global products. Health and fitness items dominate the list, while silver nanoparticles are used in a significant portion of products.
An international study of 220,000 people found that obese individuals with central obesity have a similar risk of heart attacks and strokes as those with general obesity, challenging earlier research. The study highlights the importance of measuring blood cholesterol and blood pressure levels in primary prevention.
Researchers discovered new genetic variants affecting nonalcoholic fatty liver disease (NAFLD), which may help doctors diagnose and treat the condition more effectively. The study found that approximately one quarter of NAFLD variation is influenced by genetics, with potential applications for clinical algorithms and novel therapeutics.
University of Alberta researchers argue that grocery retailers need to change their tactics in the face of rising gas prices to attract shoppers. To survive, they must provide one-stop shopping and promotions that offer value to customers, such as discounted fuel prices or savings incentives from in-store purchases.
Scientists at Scripps Research Institute and University of Pennsylvania discovered over 400 receptors in warm sensitive neurons, which regulate body temperature. The new method, sequencing single neurons, identified these receptors, revealing their role in diseases like schizophrenia and Parkinson
Researchers found caspase enzymes control microglial activation, triggering inflammation and neuronal death in neurodegenerative diseases. Caspase inhibitors showed promise in reducing activated microglia and inflammation in mice.
Researchers from Kiel University have developed a new technique to record films of extremely fast processes, capturing phase transitions and catalytic reactions in solids. The technique uses ultra short flashes of light to make snapshots of electronic states, enabling new insights into relevant properties of solids.
Researchers at NYU Langone Medical Center created a novel protein molecule derived from progranulin, which may offer alternative treatments for chronic inflammatory diseases like rheumatoid arthritis. The protein has been shown to have a high affinity and specificity for binding to tumor necrosis factor receptors.
Recent studies published in Cell Transplantation suggest a link between exercise, brain cell regrowth, and improved mental health. Exercise has been shown to promote neurogenesis, which may help counteract stress-related disorders and improve mood and cognition.
A research team discovered molecules that act as 'shift workers' to maintain the daily rhythm of fat metabolism in the liver. The findings suggest that disruption of this rhythm can lead to fatty liver and metabolic disorders.
A new multi-species comparison of primate aging patterns reveals that chimps, gorillas, and other primates grow old gracefully like humans. The study confirms a mortality gap between males and females, with males dying sooner than females in most species.
A UCSF team has developed a new model for how inherited genes contribute to frontotemporal lobar degeneration, a neurodegenerative disease. The study suggests that progranulin regulates the speed of dying cells being cleared from the brain.
Researchers from Scripps Research Institute determine a new structure of the human A2A adenosine receptor, bound to a full agonist, revealing a super stabilizing agonist. This finding has important implications for drug design, particularly for treating diseases such as Parkinson's and COPD.
A new study suggests that early male friendships are a precursor to substance abuse problems in girls, who tend to initiate mixed-gender friendships earlier and at a faster pace than boys. This transition is associated with increased risk of maladjustment and substance use during late adolescence.
A recent study published in Biology of Sex Differences found that female rats are more likely to develop cocaine addiction due to their heightened motivation and impulsivity. Researchers also discovered that the likelihood of drug abuse increases with an individual's sex, highlighting the need for targeted interventions.
A recent brain imaging study has identified the neural patterns that enable some individuals to perceive two colors at once while reading. The research, published in Cortex, suggests that the same areas of the brain responsible for processing color also support synesthetic experiences.
Researchers found people generally react positively to robotic touch, but perception of robot's intent makes a difference. The team plans to investigate ways to make robot touch more acceptable for future healthcare tasks.
Researchers at Rutgers University have identified a class of high-strength metal alloys with potential to improve the performance of engines, medical imaging equipment, security systems, and other applications. These nanostructured metals can convert electrical and magnetic energy into movement or vice-versa.
A systematic review of UK doctors' attitudes towards euthanasia and physician-assisted suicide reveals a significant gap between doctor's views and the public's. The majority of doctors oppose these practices, with religiosity, palliative care, and patient autonomy cited as key factors.
The British depiction of Egyptians as weak and subservient led to a shift towards masculine ideals, including physical health and bodybuilding. This, in turn, contributed to the formation of an anti-colonial nationalist movement that reversed the colonial narrative and created a new sense of national identity.
Researchers have made a breakthrough in developing a universal blood product that can be transfused without matching the donor and recipient's blood types. This new approach uses immunocamouflage to hide blood cells from antibodies, allowing for a reduced risk of fatal immune reactions.
Developmental biologist Hazel Sive proposes using the term 'tool' to define biological systems that don't accurately recapitulate human disorders, but provide valuable insights. These 'tools' can be used in loss-of-function studies and screening for chemicals that affect gene activity, potentially leading to therapeutic targets.
A recent study published in Neuron found that certain brain regions, including the ventral striatum, play a positive regulatory role in adolescent interpersonal functioning. This suggests that teenagers may be less susceptible to peer pressure and risky behavior as they mature.
Researchers studied the genome of Arabidopsis suecica, a hybrid species formed tens of thousands of years ago, to understand how genes are sorted and eliminated. The findings suggest that genes from one parent are preferentially expressed over the other, leading to the deletion of unfavored genes.
Abnormal neural activity was recorded from the deep brain of Parkinson's disease and dystonia patients, confirming previous animal study results. The findings suggest that cortically evoked neural responses in the basal ganglia can be used to determine target locations for deep brain stimulation electrodes.
Researchers identify resistance to cucurbit yellow stunting disorder virus (CYSDV) in exotic melon varieties, with potential applications for the southwestern United States. Whitefly populations and high temperatures exacerbate CYSDV infection, highlighting the need for integrated management strategies.
Researchers tracked three shark species and found tiger and thresher sharks can swim directly to targeted locations, suggesting a 'mental map' of the area. The study suggests these animals use magnetic fields as landmarks to navigate.
Researchers at the University of Nottingham have discovered a cell component that plays a key role in triggering allergic responses to cat dander. The finding could lead to the development of new treatments for allergies and asthma.
Researchers have developed mouse models of human MYH9 genetic disorders, which cause enlarged platelets and kidney disease. The models will aid in understanding the development of these diseases and identifying defects in the gene product.
A new gene mutation has been identified as the cause of a rare form of muscular dystrophy, with severe cognitive impairment. Researchers created a mouse model to study the mutation and found similar muscle and brain abnormalities, offering hope for potential treatments.
The University of Illinois College of Agricultural, Consumer and Environmental Sciences has partnered with several institutions to receive a $9.6 million grant from USAID to increase agricultural production and food security in northern India.
Scientists have identified a mutation on the CACNA1D gene that affects two families in Pakistan, leading to deafness and an irregular heartbeat. The mutated protein still sits in the cell's surface membrane but fails to open the calcium channel.
A Rensselaer Polytechnic Institute doctoral student has developed a novel method to extend the distance of terahertz technology's effective detection range using sound waves. The technique allows for safer detection of hidden explosives, chemicals, and other materials from several meters away.
A Swedish study found that sunlight influences the body's ability to break down medicines, with seasonal variations in drug concentrations closely linked to vitamin D levels. This may lead to increased sensitivity to certain medications, highlighting a new model for understanding individual differences in drug effects.
A new ultra-long-acting form of insulin, degludec, has shown improved glucose control when administered just three times a week, compared to daily injections. This reduces the risk of hypoglycaemia and improves patient adherence.
Researchers have discovered that retinal ganglion cells receive visual information from amacrine cell dendrites running along the null-direction, allowing for directional selectivity. This mechanism relies on asymmetric synapses and inhibitory influences between neighbouring amacrine cells.
Illicit drug users are more susceptible to serious infections due to exposure to microbial pathogens. Unsterile injection practices, contaminated needles, and the use of cutting agents can facilitate the spread of bacterial, viral, fungal, and protozoal infections.
Researchers found that patients with alcohol abuse history experienced less improvement in physical quality of life and greater pain and physical limitations after transplant surgery. However, their mental health quality improved significantly between baseline and one-month follow-up.
Caltech graduate student Guoan Zheng received the 2011 Lemelson-MIT Caltech Student Prize for his on-chip microscopy imaging technology with potential applications in malaria and blood-borne diseases. Meanwhile, Wendian Shi's portable lab-on-a-chip system for determining white blood cell counts won a $10,000 award.
Scientists at TUM create customized fluorescent proteins in various colors for future applications by incorporating a genetically encoded non-natural amino acid into widely used natural proteins like GFP. The new bio-molecule exhibits a pseudo-Stokes shift, allowing it to be excited with commercially available black-light lamps.
A team of researchers at Harvard Medical School has developed a technique to unravel the complex neural circuits in the brain. By crawling through individual connections, they created a partial wiring diagram that revealed interesting insights into how the brain functions.
A new study reveals that Cav1.3 calcium channels play a critical role in controlling the ticking of pacemaker cells in the sinoatrial node, which regulates heart rate. The absence of these channels leads to reduced frequency of Ca2+ transients and bradycardia in mice.
Researchers have found that mice exhibit complex vocalizations with age, suggesting potential for vocal learning. However, a cross-fostering experiment suggests that mouse songs may be genetically determined. The debate over nature vs. nurture remains unresolved, highlighting the complexities of scientific research.
Researchers at UT Southwestern Medical Center identified a chemical compound that may lead to a drug to combat cancers dependent on the anti-viral enzyme TBK-1. The compound, 6-aminopyrazolopyrimidine, was tested in mice and showed effectiveness in reducing cancer growth.
Researchers found that higher baseline levels of a novel inflammatory marker sTNFR-2 predicted increased risk of developing colorectal tumors. The reduced risk of colorectal cancer associated with aspirin or NSAIDs was primarily seen among participants with high sTNFR-2 levels.
An Iowa State University engineer studied the devastating impact of a February earthquake in Christchurch, New Zealand, which killed over 160 people. The research highlighted the importance of regular building shape and structure symmetry in resisting earthquakes.
Researchers use high harmonic generation method to study electronic correlations in xenon atoms, opening opportunities for investigating electron dynamics on the attosecond timescale. The new laser source developed at ALLS proves ideal for HHG from atoms and molecules, providing information on giant resonance of xenon.
Scientists identified a class of RNAs called CIRTs that target genetic building blocks to guide protein synthesis in nerve cell dendrites. This discovery provides clues for understanding brain disorders and highlights the potential impact of viral infections on normal cellular function.
Cornell researchers have discovered a new method for measuring current-induced torques in nonvolatile magnetic memory devices, which can write information without using magnetic fields. This breakthrough aims to improve the efficiency of these devices by reducing the need for large currents and thick wires.