A University of Missouri study finds that analysts' self-interests influence the value of street earnings, leading to upward bias in glamour stocks. This biases makes street earnings less useful for predicting future earnings of high-growth stocks.
Researchers at the American Society of Nephrology's Annual Meeting found that stent placement does not improve kidney function or blood pressure in patients with atherosclerotic renovascular disease. The ASTRAL trial, involving over 800 patients, showed no clinically worthwhile benefits from revascularization.
Researchers Leif Ristroph and Jun Zhang used a tabletop experiment to show that two or more flexible objects in a flow experience drag differently than rigid objects. For example, when one flag flaps, it reduces its own drag but increases the drag on its follower, contrary to expected behavior.
A collaborative study reveals how interactions between common gene variants affect brain function in schizophrenia patients, particularly in working memory. The findings suggest that combining these genetic variations may lead to reduced cortical activity, making them potential new targets for treatments.
A new national survey by Queen's University shows that despite increased investment in infection control since the SARS crisis, the number of resistant bacterial infections has multiplied. The study highlights a need for continued investment in infection control resources and programs to combat the growing threat of superbugs.
A recent study has found strong evidence for a genetic component in stuttering, with the likelihood of spontaneous recovery linked to genetic factors. Researchers hope that identifying specific genes underlying stuttering will lead to improved clinical decisions and treatments.
The University of Cincinnati's CERHAS project is rebuilding the lost structures and interiors of the Shaker community using virtual reconstruction technology. The goal is to preserve the unique architectural legacy of the Shakers, which has had a lasting impact on American architecture and design.
A new NASA technique uses satellite data to measure changes in the mass of mountain glaciers in the Gulf of Alaska with unprecedented precision. The annual ice mass lost from glaciers has been found to be 84 gigatons annually, contributing nearly half as much freshwater melt as Greenland.
Researchers reconstructed Arctic climate patterns over 65 million years, revealing a link between Arctic cooling and global cooling. Changes in ocean circulation could lead to abrupt changes in climate, similar to those that occurred at the onset of the last ice age.
Researchers silenced genes that prevent mature neurons from regenerating, causing them to recover and re-grow vigorously after damage. Up to 50% of injured neurons survived, and up to 10% showed significant re-growth of axons over long distances.
Children born to mothers with pregnancy-related diabetes are twice as likely to experience language development problems. Research from Université Laval found that babies' brains develop differently due to gestational diabetes, affecting vocabulary and grammar skills even after starting school.
A new analysis suggests that warmer temperatures could cause significant loss of carbon from shallow and deep peat bogs, with potential losses ranging from 40% to 86%.
Researchers found that acyclovir can directly slow down HIV infection by targeting the reverse transcriptase enzyme. However, this effect also leads to the emergence of resistant HIV variants, such as the V75I strain, which could compromise current treatments.
Dr. Mauro Costa-Mattioli has discovered a type of molecular switch in mice that determines whether a long-term memory is formed from an experience, improving spatial memory and synaptic connections. His research holds hope for developing new therapies for age-related memory loss and Alzheimer's Disease.
A new study finds that the US executive branch is the primary force driving foreign policy towards Israel, Iraq, and Saudi Arabia. The policies engaged by the US tend to be reciprocal, rewarding favorable behaviors and punishing unfavorable ones.
A study compared the survival of dialysis patients undergoing heart bypass surgery or stent placement, finding that stents offer best one-year survival but bypass surgery is superior for long-term results. The study's findings suggest that treatment choices depend on individual patient goals and risk tolerance.
Researchers have identified a gene mutation in Dalmatians that causes high uric acid levels and bladder stones, which can be eliminated through breeding programs. The SLC2A9 gene, also found in humans and great apes, is responsible for the elevated uric acid levels in Dalmatians.
Recent studies show that social signals can profoundly affect when and how genes function, leading to changes in behavior. In animals like honey bees and songbirds, social information alters gene expression, allowing for complex adaptations and behaviors.
Researchers have developed approaches to visualize eosinophils in real-time, which may help diagnose asthma and assess treatment efficacy. Additionally, genetic defects underlying two kidney conditions and a type of liver cancer have been identified, suggesting potential therapeutic targets for these diseases.
A new model demonstrates that functional hierarchy in the brain is linked to both time and space, contradicting previous literature. The study uses humanoid robots to show how neural activity can self-organize through multiple timescales, shedding light on the underlying mechanisms of neural systems.
A two-year study found substantial quantities of melanin produced in morbidly obese patients' fat tissue, suggesting a natural defense mechanism against obesity-related conditions. The antioxidant properties of melanin may help suppress inflammatory properties of excess fat.
Researchers propose that organisms can learn environment rules and develop modular designs storing history information in their genome, generating useful novelties for new environments.
Research reveals sea snakes dehydrate in saltwater and prefer freshwater or diluted brackish water. The findings may help explain the patchy distribution of sea snakes and their vulnerability to climate change.
New UGA research sheds light on the important role of the Foxn1 gene in maintaining T cell production in the thymus. The study suggests that understanding how this gene works could lead to new therapies for various illnesses, including age-related immunodeficiency disorders.
Teacher qualifications are more equally distributed across New York City public schools, with stronger teachers in low-income schools, leading to modest improvements in student math achievement. Recruiting more qualified teachers is recommended to further enhance teaching quality.
A double-blind study found that beta-alanine supplementation increases physical working capacity in elderly individuals, improving fitness levels by 67% compared to placebo. This increase is clinically significant, as decreased functional capacity is associated with increased mortality.
A new study has identified 11 clinical risk factors that can help doctors weigh the risks and benefits of carotid surgery. The study found advanced age and non-white patients are at higher risk for death or stroke after surgery.
Research presented at the American Society of Nephrology's Annual Meeting found African Americans with CKD caused by high blood pressure have a higher risk of progression to ESRD. The study followed 691 patients for 11 years and found they were at higher risk of progressing to ESRD than experiencing cardiovascular events.
Researchers from Universite de Montreal and Maisonneuve-Rosemont Hospital discovered a new biochemical pathway controlling DNA repair, which may lead to improved cancer treatment. The ATR protein plays a key role in this process, and its deficiency is often found in tumour cells.
A comprehensive study of lion populations in Africa and Asia found evidence of genetic diversity, even in well-studied ecosystems. The research highlights the need to prioritize conservation efforts for declining populations over larger-scale initiatives.
A new technology has successfully tested tiny solar cells that can power microscopic machines, detecting chemical leaks and toxins. The organic polymer-based solar cells provide a promising renewable energy source for various applications.
A Baylor College of Medicine neuroscientist has identified a single molecule that can affect memory, with findings showing that reducing activity of a key protein increases the expression of genes and proteins needed for long-lasting memories. The study also reveals that short exposure to experiences creates long-term memories.
Researchers at Duke University discovered that gold nanostars can dramatically enhance the reflected light, making them useful as tracers, labels, or contrast agents. The size and shape of the nanostars affect the spectrum of reflected light, allowing for 'tuning' to identify specific molecules or chemicals.
Researchers found improved cognitive function in transplant patients, particularly in verbal learning and memory. In contrast, dialysis patients showed declining test scores over time. The study suggests that kidney transplantation may have a beneficial effect on patients' mental function.
A study of over 200 cancer patients found that age was not a significant factor in survival rates. Instead, factors like physical quality of life and metastatic dissemination played a crucial role. The findings suggest that older patients should not be excluded from clinical trials due to their age.
Researchers developed an AI coaching system called COACH to assist older adults with moderate dementia in performing daily activities. The system uses computer vision and artificial intelligence techniques to deliver personalized reminders, resulting in increased independence for participants.
A study published in the New England Journal of Medicine found that testosterone administered by a skin patch improves sexual well-being in post-menopausal women. The research involved over 800 participants from across the globe and suggests testosterone as a potential treatment for low libido in this demographic.
A recent study by MIT biologists has found that DNA packaging plays a crucial role in directing stem cells towards becoming specific types of adult cells. The researchers discovered that chromatin structure, specifically the variant histone H2AZ, influences gene expression and cell fate.
A new study found that family dynamics mediate the relationship between gender and mental health issues for African-American court-involved youth. Both girls and boys showed similar levels of externalizing and internalizing behavior once family dysfunction was taken into account.
Researchers at Montana State University have identified a gene called srbA that allows molds to resist drugs and thrive in low-oxygen environments. The gene is found in both humans and molds, and its removal makes the mold more susceptible to antifungal drugs and oxygen deprivation.
Brandeis University has partnered with Smart Balance to advance heart-healthy research, with a $1 million sponsored research agreement. The partnership aims to develop new fat technologies to support healthier living.
Patients with XDR-TB are more likely to fail treatment and die compared to those with MDR-TB, highlighting the need for improved diagnosis and treatment options.
A study published in Ecosystems reveals that elevated fire levels outweighed harvest reductions in the loss of older forests in the Pacific Northwest. The NWFP helped stabilize large-diameter forest numbers, but fire was the main reason for their decline.
Research at Fred Hutchinson Cancer Center found that women who suffer from migraines have a 30% lower risk of breast cancer compared to those without migraines. The association is thought to be linked to hormonal fluctuations and estrogen levels.
A genetic mutation in Dalmatians causes high uric acid levels leading to bladder stones, a problem also affecting humans. Researchers identified the SLC2A9 gene responsible and plan to offer DNA testing for breeders to eliminate the trait.
Kidney transplant wait times vary widely across the US, with some patients waiting just one year and others up to 10 years. Experts will discuss issues and possible solutions for these inequities in organ allocation policies.
Researchers have uncovered the mechanism by which specialized activator proteins kickstart the RNA polymerase machine, allowing genes to be activated at specific times. This process is crucial for protein production and bacterial adaptation, making it a potential target for developing novel antibacterial compounds.
UC Davis Cancer Center researchers have discovered a metabolic deficiency in pancreatic cancer cells that can be used to slow the progress of the deadliest form of cancer. By depleting arginine levels, they were able to significantly reduce pancreatic cancer-cell proliferation and inhibit tumor growth by 50 percent.
A new study by Professor Olle Lundberg and colleagues found that policies supporting dual-earner families decrease infant mortality rates, while those supporting traditional male earner/female stay-at-home families do not. Increased generosity in basic state pensions also reduces excess mortality in old age.
A new study suggests that genetic factors may influence the size of a brain region involved in emotional processing and impulsivity in teenagers. Researchers found that those with a family history of alcohol dependence had reduced volume of the right orbitofrontal cortex, an area critical for regulating impulsive behavior.
According to the American Dietetic Association's 2008 survey, two-thirds of consumers believe diet and nutrition are very important for their personal health. Meanwhile, younger adults and those with lower education levels tend to be less concerned about these aspects. The results indicate a shift towards healthier habits among Americans.
Researchers found that the use of predictive biomarkers and targeted therapies significantly delayed the need for conventional chemotherapy in patients with early-stage but high-risk chronic lymphoid leukemia (CLL). The study resulted in a four-year delay in treatment compared to two years, showing promising results for personalized care.
Research found that male magazines with objectified women increase self-consciousness in men, while those with average-looking models reduce it. Men are reminded to conform to appearance standards to be sexually appealing.
A new study published in The Endocrine Society's Journal of Clinical Endocrinology & Metabolism found that dose-dependent growth hormone treatment increased final height in children with short stature who are not GH deficient. Children from parents of normal height responded better to treatment than those from short parents.
A new Cornell University study found that climate change is driving rapid ecosystem shifts in the North Atlantic, with cold Arctic waters flowing south and altering species distributions and food chains. The study reports counterintuitive findings, including northern species moving southward as temperatures rise.
Researchers at Massachusetts General Hospital have developed noninvasive methods to visualize eosinophils in real-time, revealing the impact of dexamethasone on allergic airway inflammation. These techniques may improve diagnosis and treatment assessment for asthma.
A study by The Lancet found that Sure Start programs in England boost children's social skills and parental involvement, creating better home-learning environments. The research also revealed that families in SSLP areas use more services to support child development.
A recent study found that exposure to green spaces significantly narrowed the health gap between rich and poor populations. In England, areas with more green space had half as large a difference in mortality rates between the richest and poorest individuals compared to those in less green areas.
A weakening of the summer Asian Monsoons in ancient China may have contributed to the fall of three dynasties. The researchers found that periods of weak summer monsoons coincided with times of social unrest, but a strong monsoon prevailed during one of China's golden ages.
Researchers found that infants later diagnosed with autism displayed unusual exploration of objects, including spinning and repetitive visual examination, as early as 12 months. These behaviors could be added to parent check-lists or quickly assessed during pediatric visits, potentially improving early diagnosis and treatment.