A team of CSHL scientists has discovered that maternal small RNAs called piRNAs pass on the trait of fertility from mother to offspring in fruit flies by silencing DNA sequences that induce sterility. This new mechanism of inheritance effectively doubles the number of mechanisms by which epigenetic information is known to be inherited.
The National Institute for Health and Clinical Excellence (NICE) has approved erlotinib as an alternative to docetaxel for NSCLC patients, with the manufacturer Roche offering a discounted price. This approval is part of a collaboration between NICE and manufacturers to reduce drug costs within the NHS.
Scientists have derived a simple law to predict where icebergs will calve off from parent ice sheets. The rate of spreading, width, and thickness of the ice shelf are key factors in this process, accounting for most observed variability.
Fast molecular rearrangements in plastics allow them to absorb energy and change shape without breaking, enabling properties like plastic flow. This quality enables plastics to bend rather than break under stress, as observed in bulletproof glass that flows around bullets.
Humpback whales use a high-speed diving technique called lunge-feeding to catch prey, but this method comes with significant energy costs. The study found that lunge-feeding requires more energy and time than other behaviors, such as singing.
Almost a third of registered aged care nurses in Victoria are considering quitting their jobs due to emotional exhaustion. The study highlights the need for improved training, human resource management and grievance procedures to improve staff well-being and quality of care.
An experimental TB drug called PA-824 has been found to work by producing nitric oxide gas, which kills the bacteria. The discovery could lead to the development of new drugs against other disease-causing bacteria, as humans lack the bacterial enzyme needed for the drug's effect.
A rare case of adult T-cell leukemia/lymphoma (ATLL) with multiple lymphomatous polyposis is reported, highlighting the importance of endoscopic evaluation to differentiate neoplastic intestinal lesions from infectious enterocolitis. The patient presented with fever, watery diarrhea, and colonic involvement without leukemic change or v...
The University of Wisconsin-Madison has developed a scientifically-led training program for graduate students and postdoctoral researchers to learn effective teaching methods. The approach focuses on fostering scientific inquiry, diverse learning styles, and rigorous self-evaluation.
A study published in the World Journal of Gastroenterology found that almost 30% of patients with CSX no longer exhibited typical chest pain after gastroenterological workup. Treatment with proton pump inhibitors significantly improved symptoms, suggesting a strong link between acid-related disorders and CSX.
A study found that ascorbic acid supplementation in diabetic rats improved myenteric neuron density by 14% and cellular area by 4.4%, suggesting moderate neuroprotection.
Researchers at Newcastle University create a super-efficient system that burns vegetable oil to produce electricity, heating, and cooling. The innovative design optimizes energy recovery, storage, and distribution for a carbon-neutral home power solution.
A new methodology developed by Pedro Álvarez Lloret found that exposure to organochlorate pollutants and lead causes bone weakening and fracture in wild birds. The study also reveals that polychloro-biphenyl (PCB) increases bone maturity, making them more fragile.
Researchers have uncovered how a bacterial pathogen interacts with blood coagulation protein fibrinogen to cause MRSA infections. They found that agents could be designed to inhibit the ClfA–Fg interaction without interfering with platelet activation, offering new avenues for anti-staphococcal treatment.
Biological damage caused by declining calcium levels is causing widespread transformation of aquatic food webs in boreal lakes in North America. The phenomenon, known as 'aquatic osteoporosis,' affects many lake-dwelling organisms, including water fleas, and has important management implications.
The report warns of devastating effects on forests and communities due to climate change; adaptation measures, such as improving forest management and conserving ecosystems, are crucial to mitigate the impacts. Forests provide vital ecosystem services and income for millions of people.
The TV character Jack Bauer's glamourization is linked to increased public acceptance of torture, according to Dr. Homer Venters. He proposes steps for physicians to take, including educating themselves and strengthening ties with human-rights organizations.
Researchers have created a material that can reflect light from all angles, overcoming optical singularities. This breakthrough could lead to the development of perfect cat's eyes and invisibility devices. The discovery is based on transformation optics and has potential applications in wireless technology and radar.
Scientists at St. Jude Children's Research Hospital identified distinctive genetic changes in cancer cells of children with acute lymphoblastic leukemia (ALL) that cause relapse. The study found that the majority of ALL relapse cases arise from a cell already present at diagnosis, providing a potential target for treatments.
A study compared FibroScan with liver biopsy in patients with chronic hepatitis C, finding non-invasive methods effective for fibrosis assessment. Transient elastography outperformed traditional biopsy in differentiating significant from absent or mild fibrosis, offering an alternative to invasive procedures.
Scientists have discovered condensin II, a protein that separates chromosomes by twisting them into supercoils, enabling proper chromosome alignment and gene expression. This breakthrough could lead to better understanding of genetic disorders like Down syndrome and improved DNA sequencing analysis.
A genome-wide association study reveals genetic variants influencing metabolic capacity, affecting disease susceptibility. The study identifies four SNPs associated with variations in polyunsaturated fatty acid synthesis and breakdown of triglycerides.
The Bamako call to action emphasizes the importance of knowledge translation, regional alliances, and robust regulatory frameworks in strengthening health systems. Countries committed to allocating at least 2% of national health budgets to research and funding funders to invest at least 5% of health sector aid to research.
Scientists found that vents on Enceladus channel water vapor from a warm, probably liquid source to the surface at supersonic speeds. This supports a theory that tidal heating causes geysers and provides implications for life in the solar system.
Retinal detachment is a condition that affects about 10,000 Americans each year, putting vision loss or blindness at risk. NewYork-Presbyterian/Weill Cornell ophthalmologist Dr. Donald J. D'Amico highlights advanced surgical techniques that offer high probabilities of reattachment and visual improvement.
A study found that media coverage of clinical trials rarely provides readers with the necessary information to make informed decisions. The researchers compared pharmaceutical and herbal remedy trials and found that stories underreported risk and lacked disclosure of trial funding and scientists' conflicts of interest.
Scientists have discovered that DNA damage can lead to a decrease in gene regulation, contributing to aging. A specific sirtuin protein helps regulate gene expression and maintain DNA repair, but its dysfunction can result in chronic gene activation and aging phenotypes.
A new study from Texas Christian and Louisiana State universities finds that shrimp trawling operations in the Gulf of Mexico are linked to higher levels of toxic mercury in juvenile red snappers. The research demonstrates a clear relationship between mercury concentrations and coastal areas where commercial shrimp trawling occurs.
The Infant Brain Imaging Study (IBIS) is expanding its research on infant brain development and autism symptoms. The study aims to identify changes in brain structure and behavior that may indicate the onset of autistic symptoms, with potential benefits including early screening measures and treatments.
Researchers at Columbia University discovered that gut serotonin plays a crucial role in bone formation, challenging the long-held belief that the skeleton controls bone growth. The study found that inhibiting serotonin release can increase bone mass and potentially treat osteoporosis.
Researchers discovered a molecule called NAPE that signals the brain when the stomach is full, reducing hunger. In studies with mice and rats, NAPE treatment led to significant weight loss and reduced appetite, suggesting potential for new obesity treatments.
A team of scientists at Cold Spring Harbor Laboratory discovered that the protein Scribble regulates breast cancer by controlling cell polarity. In normal cells, Scribble allows duct-like structures to form and resist cancer formation.
Researchers at UCLA have developed a new polymer that significantly improves sunlight absorption and conversion capabilities in solar cells. The silole-containing polymer can also be crystalline, making it suitable for high-efficiency solar cells, with the goal of reaching 10% efficiency.
New research by UCLA geochemists suggests that plate tectonics began more than 4 billion years ago, with ancient mineral grains indicating low heat flow and water presence on Earth during its first 500 million years.
Two new papers by University of Notre Dame biologist Michael Ferdig suggest that genomics and bioinformatics may hold the key to combating malaria. The research reveals previously unrecognized transcriptional complexity in Plasmodium falciparum, a key driver of drug resistance.
A Penn State study found that obese rats are less sensitive to sweet tastes and prefer sweeter foods due to a weakened response to weak concentrations, leading to a vicious circle of overeating and sugar cravings. The research suggests that the brain's reward center is affected by the increased consumption of sugary foods.
Scientists have found evidence that turtle shells are bony extensions of their backbones and ribs. The oldest known turtle fossil, Odontochelys semitestacea, has a partial shell extending from its backbone and widening of ribs, suggesting it was a water dweller.
Research from the University of Leicester reveals that nitric oxide can alter brain function, impacting neurodegenerative diseases like Alzheimer's. The finding suggests a potential new approach for treating these conditions and gaining a deeper understanding of brain function.
Researchers at the Rong Li Lab discovered that yeast cells can adapt to disruptions in cell division machinery by increasing their chromosome number and modifying gene expression patterns. This ability may contribute to cancer cell evasiveness and could be used to predict evolutionary paths and outcomes.
A University of Alberta study shows that rethinking jobs can significantly boost morale, job retention, and productivity. The 'Spirit at Work' intervention program reduced absenteeism and turnover rates among long-term health-care workers.
New research confirms that 64-CT scans can accurately diagnose coronary artery blockages, rivaling invasive cardiac catheterization. The technology also has the potential to reduce cardiac catheterizations and serve as an alternative to cardiac stress testing.
A research team at the University of Pennsylvania School of Medicine has discovered a key molecular partnership that coordinates body rhythms and metabolism, leading to leaner mice and improved insulin sensitivity. The study suggests that disrupting this partnership could be a valuable new weapon in the fight against obesity and diabetes.
A recent study published in Pediatrics found that children with misaligned eyes are at a significantly increased risk of developing mental illness by early adulthood. Children with exotropia (eyes that diverge outward) were three times more likely to develop psychiatric disorders than those with normal eye alignment.
Researchers have discovered a possible therapy for mucolipidosis type IV (ML4), a disease causing nerve cell death and progressive motor function loss in children. Introducing normal blood cells into genetically modified fruit flies with ML4 symptoms delayed cell death, suggesting bone marrow transplantation as a treatment option.
A study published in Atherosclerosis reveals that binge drinking causes an irregular pattern of heavy drinking to clog blood vessels, leading to a two-fold increase in fatal heart attack risk. Acetaldehyde levels found in the blood after binge drinking increase monocyte adhesion to blood vessel walls.
A new study published in The Lancet shows that there is no definitive difference in outcomes between using general or local anaesthetic for carotid surgery. The randomised controlled trial analysed over 3,500 patients and found similar incidence rates of stroke, heart attack, and death in both groups.
Researchers at Yale University have demonstrated a marriage of nanophotonics and nanomechanics, enabling extreme miniaturization of optics and mechanics on silicon chips. The photon force is strong enough to operate nanoscale machinery, paving the way for ultra-high speed and low power telecommunications.
A new study by Stanford University researchers found that nifedipine, a muscle relaxant, has no effect on prolonging pregnancy after preterm labor is halted. The study suggests that prolonged treatment with nifedipine does not appear to be an answer in preventing premature birth.
Researchers at Northwestern University's Feinberg School of Medicine discovered a link between chronic pain and brain rewiring in complex region pain syndrome (CRPS). The study found changes in the brain's white matter, which dispatch messages between neurons, contributing to the condition.
A new study reveals childhood constipation can lead to serious health issues, pain, and low self-esteem, with treatment costs equivalent to those of asthma or ADHD. Simple changes in diet and behavior, such as regular bowel movements and high-fiber foods, can help prevent or correct constipation.
New research on Galapagos land iguanas reveals reduced genetic diversity in some populations, putting them at risk from future environmental changes. The study's findings highlight the need for effective management and conservation strategies to ensure the long-term survival of these unique reptiles.
Professor Chandramouli's paper, titled A game theoretic framework for distributed self-coexistence among IEEE 802.22 networks, is one of 11 papers selected to receive a GLOBECOM '08 Best Paper Award. The award recognizes the author's work on cognitive radio based IEEE 802.22 wireless regional area network (WRAN) that operates in under-...
A three-year study found that vitamin K supplementation improved insulin resistance in elderly men, while worsening it in women and those not given supplements. Vitamin K may help regulate glucose metabolism by storing in fat tissue.
Researchers at Brandeis University have discovered a specific set of wake-promoting neurons in fruit flies that are analogous to cells in the human sleep circuit. The study found that these neurons play a crucial role in regulating sleep-wake cycles and that targeting them could lead to the development of more effective sleep treatments.
A study comparing two immunosuppression tapering approaches for kidney transplant recipients with BKVAN found that reducing immunosuppressive therapy can lower the risk of graft loss. Early withdrawal of immunosuppressive drugs within one month after diagnosis reduced graft loss by two-thirds.
The SIM-sponsored survey found that businesses are using IT to reduce costs and increase productivity, with CIOs spending most of their time on non-technical issues. Organizations with higher IT business alignment maturity scores tend to have better overall company performance.
Researchers have identified a previously unknown mechanism that processes non-coding RNA molecules into smaller pieces, including a new class of small RNAs called mascRNA. This discovery suggests that the vast majority of human DNA may not be genetic junk, but instead performs various kinds of work in cells.
A noninvasive test analyzing proteins in urine can identify failing transplanted kidneys, allowing for more accurate monitoring and treatment of transplant patients. The study found that the test correctly identified patients with interstitial fibrosis and tubular atrophy and chronic antibody-mediated rejection.
Scientists investigate Tamiflu's environmental fate and its impact on the development of resistant influenza viruses in Japan, a major consumer of the drug. The research aims to understand potential threats to global defenses against future pandemics.
Researchers discovered that serious gram-negative bacterial infections increase by up to 46% in summer compared to winter. The study found that Pseudomonas aeruginosa and Acinetobacter baumannii are the most affected bacteria.