Allan Sandage's last paper reveals that physicist George Gamow and astronomer Walter Adams had previously discovered subgiants in the 1940s, which would have accelerated the development of stellar evolutionary theory. The study shows that these early findings were largely ignored due to biases in the time.
UC San Diego scientists create innovative imaging system to study brain activity in free-moving fruit flies, providing first glimpse into neural processes underlying mating, learning, memory, and more. The 'Flyception' technique enables real-time monitoring of brain activity at unprecedented speed and precision.
A new study has found a significant association between prenatal exposure to selective serotonin reuptake inhibitors (SSRIs) and lower birth weight. Infants exposed to SSRIs for two or more trimesters weighed 205 grams less than those not exposed, on average.
A novel nicotine inhaler has been shown to double smoking quit rates compared to placebo inhalers. The study, published in Nicotine and Tobacco Research, suggests that inhaled nicotine from a standard inhaler is highly effective in helping smokers quit.
A new study by SUNY Downstate resolves the controversy over PKMzeta's importance in forming and retaining memories. Mice lacking PKMzeta recruit a closely related molecule, PKCiota/lambda, to compensate for its absence, highlighting the brain's memory system durability.
People with major depressive disorder may have altered purine metabolism, with higher levels of xanthine and lower inosine and guanosine. This dysregulation may be the body's compensatory mechanism to combat increased oxidative stress caused by depression.
A study found that more than half of those making decisions for critically ill patients have significantly different estimates of survival rates than their doctors. The research team hopes to train physicians to better communicate with these decision-makers, improving treatment outcomes and alleviating suffering.
Researchers have designed three new eyeglasses using high-power prisms to optimally expand the visual fields of patients with hemianopia, a condition that affects over one million Americans. The new devices address limitations of existing prism technology and may provide additional range of vision when scanning in both directions.
A retrospective study of 32,760 ICU patients found that nighttime extubations were associated with higher mortality rates compared to daytime extubations. Patients who underwent overnight extubations were more likely to have cardiovascular diagnoses and experienced longer hospital stays.
Researchers have identified a new connection between inflammatory signals and cell division, revealing how cells adapt to environmental changes. The discovery sheds light on the underlying mechanisms of diseases such as Crohn's disease and cancer.
A streamlined TB diagnosis approach using a single sputum sample and rapid results proved feasible in rural Uganda, increasing treatment initiation rates. The method uses fluorescence microscopy for quick analysis and GeneXpert testing for accurate results, with 73% of patients diagnosed correctly.
Researchers discovered the Oct4 gene plays a critical protective role in preventing heart attacks and strokes by stabilizing atherosclerotic plaques. Manipulating its expression may help block age-related decline in the body's ability to carry out repairs and heal wounds.
UNIST partners with Fraunhofer ICT to develop composite materials for eco-friendly vehicles. The new project center will focus on full industrial-scale trials and take UNIST to the forefront of automotive innovation.
A new study finds HIV-infected patients are more likely to lack cancer treatment for various cancers, including head and neck, upper gastrointestinal tract, and lung cancers. The disparity remains after adjusting for insurance status and comorbidities.
Researchers will assess storm water quality and implement Low Impact Development techniques to treat pollutants, ultimately aiming to enhance the city's ability to provide drinking water for its growing population.
A study of 701 Canadian adults found that 30% of those diagnosed with asthma did not have current asthma after medication withdrawal. Careful testing revealed no evidence of airflow obstruction or bronchial hyper-reactivity in 37.5% of subjects.
The University of Washington team observed and analyzed collective interparticle vibrations in two-dimensional microscale granular crystals for the first time. This understanding allows for designing materials with unique properties, such as customizable impact energy absorption.
Scientists at NASA's Jet Propulsion Laboratory found that Europa's ocean could have a comparable balance of hydrogen and oxygen to Earth's oceans, suggesting the presence of a habitable environment. This discovery draws attention to the complexity of Europa's rocky interior and its potential for supporting life.
Researchers found that differences in immune cell parameters correlate with an individual's immune response to the flu vaccine. People who show a better antibody response after vaccination have higher levels of specific proteins on dendritic cells and more B cells, indicating improved immunity against flu.
A new study by RAND Corporation reveals that Southern California middle school students are exposed to an average of 3.1 alcohol advertisements every day. Racial disparities were also observed, with African Americans and Hispanics experiencing higher levels of exposure compared to white youths.
Increased Arctic vegetation may counteract global warming by reducing decomposition and releasing stored carbon, according to a Lund University study. The study found that warmer temperatures trigger bacteria and fungi to break down nutrient-rich shrubs rather than moss, leading to reduced soil nitrogen.
A small feasibility trial involving 12 people with treatment-resistant depression found that psilocybin was safe and well-tolerated, reducing symptoms of depression in about half of the participants at 3 months post-treatment. Further research is needed to understand the therapeutic benefits of psilocybin.
Researchers at Vanderbilt University School of Medicine have received a grant to examine the likelihood of genomic information being identified and how effective legal efforts can reduce these risks. The center will also explore the relationship between history, public opinion, and literature on privacy concerns.
The study discovered 70 genes that show multiple signs of adaptation, including unique amino-acid-sequence substitutions and positive natural selection. These adaptations are linked to the development of the giraffe's cardiovascular system, blood pressure, and long neck and legs.
A new study published in Neurobiology of Aging found that shift workers performed worse on a cognitive test compared to non-shift workers. Those who had quit shift work for more than five years showed similar results to non-shift workers.
The NIH will fund four new research projects exploring the use of genomic information in infectious disease prevention and treatment, as well as its impact on privacy and communication. The projects will also examine genomics' effects on American Indian and Alaskan Native communities.
A study published in The BMJ found that higher intakes of boiled, baked, or mashed potatoes and French fries are associated with an increased risk of developing high blood pressure. Replacing one serving a day of potatoes with non-starchy vegetables is linked to a lower risk of hypertension.
Physicians use more hospice care, spend more time in Intensive Care Units (ICUs) and just as much time in hospitals compared to the rest of the population. Doctors used an average of 2.4 days longer in hospice care at the end of life.
A new approach could help women of reproductive age preserve their fertility during cancer treatment by targeting DNA damage response in oocytes. This method has shown promise in animal models and may prevent premature ovarian insufficiency and infertility.
Researchers used computer modeling to predict viscosity in CO2 capture materials, allowing for the design of low-viscosity liquids that can efficiently bind carbon dioxide. This could lead to cost savings and improved efficiency in carbon capture technology.
A Columbia University study found a strong association between prenatal exposure to BPA and measures of body fat in children at age 7. The researchers, who analyzed data from over 369 mother-child pairs, also discovered that prenatal BPA exposure was positively associated with higher levels of adiposity in girls.
Research suggests that people who take foreign breaks have higher levels of vitamin D in their blood, which has been linked to wide-ranging health benefits. Farmers also have higher levels of vitamin D, particularly those over 60 years old.
The new research centre will focus on the construction, maritime and aerospace sectors, with goals of creating more efficient production processes and stronger walls. The centre is led by NTU Professor Chua Chee Kai and has attracted significant funding from industry partners.
A group of South Korean researchers combine superhydrophobic surfaces with Leidenfrost levitation to create highly water-repellent surfaces. The study reveals an anomalous water droplet-bouncing phenomenon generated by the combined impact of the Leidenfrost effect and nonwetting Cassie state.
A new University of Florida study proves removing beach debris significantly increases the number of sea turtle nests. The study shows that clearing beaches of flotsam and jetsam increased nest numbers by as much as 200 percent, while leaving detritus decreased them by nearly 50 percent.
A new study from Brigham and Women's Hospital suggests that the majority of women with endometriosis do not experience infertility, contradicting previous estimates. The study found a higher risk of subsequent infertility in women under age 35, but only half of cases previously thought to be related to endometriosis.
A molecular pathway in brain helps halt spread of intestinal bacteria into bloodstream, strengthening gut barrier to prevent immune system activation. Researchers discover genetic switch Crtc plays key role in maintaining this barrier.
A study at EuroPCR 2016 found that half of transcatheter heart valves may undergo degeneration within 10 years after TAVI. The study, which followed 704 patients for up to 10 years, identified 35 cases of valve degeneration, with approximately two-thirds associated with intravalvular regurgitation.
A comprehensive analysis of data from 1.6 million hospital stays found that patients undergoing common operations at critical access hospitals had lower risks of major complications and were healthier before surgery. These hospitals also cost the Medicare system nearly $1,400 less than larger hospitals.
A recent study found that 92.2% of physicians believe doctors should control costs, but only 36.9% have a clear understanding of test and procedure costs. Primary care physicians reported greater awareness of the Choosing Wisely campaign, which aims to identify low-value services.
UT Southwestern researchers challenge long-held beliefs on acid reflux damage, finding that inflammatory response and cytokine secretion are the main causes of esophageal damage. The study could lead to novel GERD treatments targeting these proteins.
Research finds that isoprene emitted by trees can influence ozone production in the St. Louis area, particularly at night and into the morning. The study suggests that a specific combination of nighttime chemistry and morning isoprene emissions can drive elevated ozone levels in urban areas downwind of major deciduous forests.
Researchers at King's College London examined eating habits of 1,620 children to determine if timing of evening meals was associated with obesity. They found no significant risk of being obese or overweight when eating dinner between 8pm and 10pm compared to earlier times.
Researchers at Los Alamos National Laboratory found that perovskite solar cells degrade due to accumulated charge carriers and self-heal when exposed to darkness. Temperature control can stabilize device performance by reducing degradation mechanisms.
Researchers at MIT found that just eight tweets per day can identify users' homes and workplaces. Participants correctly identified homes roughly 65% of the time and workplaces around 70%.
A recent study found that children with cerebral palsy are more likely to suffer from obstructive sleep apnea due to underdiagnosis. Routine screening with a questionnaire can accurately diagnose sleep disorders in this population.
Researchers have discovered that the activation of endogenous retroviral genes in B cells can lead to programmed cell death and disrupt immune system development. This occurs when the silencing mechanism fails, allowing viral proteins to accumulate and trigger an unfolded protein response, ultimately leading to apoptosis.
Researchers have discovered a new mechanism for wound healing called wound-induced polyploidy (WIP), which maintains tissue size and function by enlarging existing cells rather than dividing new ones. This discovery has significant therapeutic potential for treating various human diseases.
A new study found that a narrow band of green light significantly reduces photophobia and can reduce headache severity in patients with migraines. The researchers discovered that blue and red lights generated larger signals in the brain, while green light generated smaller signals.
A systematic review published in Journal of Medicinal Food found that consuming sesame-based ingredients can increase antioxidants and reduce oxidative stress in individuals with high blood pressure and type 2 diabetes. Sesame oil has also been shown to prevent atherosclerosis in preclinical studies.
VIPA-based Brillouin spectroscopy enables accurate tissue stiffness measurement by suppressing unwanted light noise. The technique allows for noninvasive biological characterization of materials like chicken breast or potentially cancerous tumors.
A University of Illinois study found that supplementing Holstein cows' diets with methionine during prepartum and postpartum periods increased the number of lipid droplets in preimplantation embryos, allowing them to survive more stress. This may lead to lower embryonic death rates and improved pregnancy outcomes.
Researchers at Beth Israel Deaconess Medical Center identified an enzyme called SHP-2 that significantly contributes to the development of lupus. Inhibiting this enzyme can diminish lupus symptoms and suggest a new therapeutic approach for the disease.
The US Department of Agriculture is offering $130 million in funding for foundational agricultural research, education, and extension projects. This funding supports sustainable and productive plant and animal production systems, including certified organic production.
A study published in The BMJ found that the accuracy of coding for acute stroke admissions differed substantially between weekend and weekday admissions. This suggests that previous studies based on hospital coding data alone may be undermined by inaccurate coding, leading to an apparent 'weekend effect'.
Untreated obstructive sleep apnea (OSA) is associated with a significant increase in major adverse cardiac and cerebrovascular events, including cardiovascular death, heart attack, stroke, and unplanned revascularization. Patients with OSA have a 1.57 times higher risk of these events compared to those without OSA.
A team at Harvard's Wyss Institute developed a novel method to print metallic architectures without supports, allowing for customized electronic and biomedical devices. The technique uses laser annealing of conductive metallic inks, resulting in complex wire patterns and sharp angular turns.
Breast cancer tumor-initiating cells use mTOR signaling to recruit myeloid-derived suppressor cells (MDSCs), which are involved in suppressing the body's response against tumors. This interaction helps researchers understand the events leading to tumor growth and metastasis, identifying potential therapeutic targets.
Researchers documented significant reductions in wildlife-vehicle collisions after construction of overpasses and underpasses along a Wyoming highway. The study found that these structures can improve safety for motorists while enhancing habitat connectivity for migratory species.
Biologists at Cold Spring Harbor Laboratory have discovered a new regulatory pathway that channels signals from leaves to stem cells, regulating their proliferation. This pathway, involving the FEA3 receptor-like protein, has near-term implications for increasing maize and staple crop yields by as much as 50%.