A Fox Chase Cancer Center researcher has developed a new model for studying prions, which are misfolded proteins responsible for diseases such as BSE and Alzheimer's. The study aims to unravel the molecular basis of prion formation, which is crucial for developing treatments.
Researchers discovered a new metabolite, endoxifen, which is present in higher concentrations than previously thought and varies with genetic composition. This finding suggests that tamoxifen's effectiveness may be influenced by individual differences in metabolism.
Researchers found no survival benefit from solitary pancreas transplantation for patients with diabetes, but may justify procedure for quality of life benefits. The study suggests weighing potential benefits against increased mortality risk, particularly in the early posttransplant period.
The study found that 40% of miscarriages can be attributed to embryonic congestive heart failure, which can be identified using Doppler technology. The condition is characterized by increased free amniotic fluid and depressed myocardial contractility.
Researchers used fMRI to study infants with documented brain injury and found early evidence of left-hemisphere-dominant activation patterns during speech processing. This challenges the long-held assumption that language lateralization is progressive until puberty, instead suggesting a more complex process.
Experts K. Eric Drexler and Richard E. Smalley disagree on the possibility of molecular assemblers, devices that can precisely manipulate atoms and molecules. Drexler proposes guiding chemical synthesis with reactive molecules, while Smalley questions the feasibility of such devices.
A self-management program improved mental and physical functioning in low-income adults with low back pain. The study, funded by the NIH and VA, showed empowering individuals to deal with their pain through exercise and behavior changes significantly reduced symptoms.
Researchers found that calcium supplements reduced the risk of colorectal cancer recurrence only among individuals with baseline vitamin D levels above the median. Serum vitamin D levels were also associated with reduced adenoma recurrence among individuals taking calcium supplements.
The International Verapamil-Trandolapril Study (INVEST) found that older hypertensive patients with coronary artery disease treated with a calcium antagonist strategy or a beta-blocker had similar outcomes. The study included over 22,500 patients and followed them for an average of 2.7 years.
Researchers at Ohio State University have created hybrid materials that are virtually defect-free, paving the way for ultra-efficient electronics, solar cells and LEDs. The new technology could lead to faster, less expensive computer chips and bridge the gap between traditional silicon and light-related technologies.
The Honeywell center at Virginia Tech fosters collaboration between faculty and students on creative research projects. These partnerships have led to significant revenue increases for companies like Honeywell Specialty Materials.
Researchers found that CART peptide, a natural brain chemical, reduces the effects of cocaine by reducing locomotor activity. The discovery opens doors to develop potential treatment options for cocaine addiction.
Researchers at Indiana University led by Martin Jarrold have made a groundbreaking discovery about the stability of gallium clusters. The findings show that these tiny clusters can withstand high temperatures and remain in a solid state, contrary to classical physics predictions.
A nationally representative sample of 7,889 men aged 75+ reported undergoing PSA screening tests, with 32.5% of elderly men screened in the past year. This highlights concerns about physicians suggesting unnecessary screenings to patients.
Researchers found that paroxetine reduces levels of endoxifen, an active metabolite of tamoxifen, in breast cancer patients. This decrease was more pronounced in women with a normal CYP2D6 genotype, suggesting potential implications for tamoxifen treatment outcomes.
Researchers developed a technique using single-stranded DNA to separate and sort metallic and semiconducting carbon nanotubes, enabling uniform conductivity and advancing nanoelectronic applications. The discovery in the journal Science has significant implications for developing sensitive medical diagnostic devices and mini-transistors.
Researchers at the University of Illinois at Urbana-Champaign have identified anastellin, a natural agent derived from the cell adhesion protein fibronectin. Anastellin stabilizes the extracellular matrix, restricting the motion of cancer cells and creating strong 'jail bars' to prevent metastasis.
A randomized controlled trial found no evidence that Echinacea purpurea is effective in reducing the duration or severity of upper respiratory tract infections (URIs) in children aged 2-11 years. The study also noted a higher risk of rashes in children treated with echinacea.
A new MRI technique using whole brain N-acetylaspartate (WBNAA) measures the amount of NAA in the brain, which decreases with MS disease progression. This method is more sensitive and specific than current markers, enabling earlier treatment monitoring and drug development for MS patients.
Researchers used fMRI to study brain activity in people with dyslexia, finding increased visual pathway activation during auditory tasks, linked to poorer performance. The findings suggest abnormal cross-modal sensory processing may be a fundamental deficit in dyslexia.
Researchers at the University of Pennsylvania have created a method to mix single-walled carbon nanotubes into polymers for enhanced strength, conductivity, and thermal stability. The technique uses coagulation to disperse nanotubes evenly, achieving significant improvements in material properties.
Research using fMRI scans found left-hemisphere activation in infant brains during speech stimulation, suggesting early language lateralization. The study challenges the long-held assumption that language dominance is progressive until puberty.
Women on hormone replacement therapy (HRT) are more likely to have smaller tumors and earlier-stage cancer diagnosis due to regular mammography screening. The study found that HRT use is associated with improved breast cancer prognosis, particularly in women who receive estrogen-blocking drugs such as tamoxifen.
A team of top scientists, including Thomas Karl and Kevin Trenberth, conclude that human activities are significantly impacting the global climate, with industrial emissions being the dominant factor. The study estimates a 1.7°C to 4.9°C temperature rise by 2100, with widespread impacts on society and the environment.
The journal celebrates the Wright brothers' achievement with a special issue focusing on the application of operations research in aviation. The studies explore various aspects, including aircraft scheduling, air transport networks, and airspace planning.
Telomeres protect chromosome ends, but when they're short, enzymes called exonucleases nibble away, causing gene loss. This discovery challenges the long-held assumption that chromosome fusion is the primary mechanism behind genomic instability.
A study found a higher prevalence of congenital abnormalities related to testicular descent in boys exposed to endosulfan. Although the sample size was small, the results suggest a link between endosulfan exposure and delayed sexual maturity in males.
A study by Thomas Karl and Kevin Trenberth concludes that human activities are significantly impacting the global climate, with a 90% probability of temperature rises between 1.7 to 4.9 degrees Celsius by 2100. Rising carbon dioxide levels and industrial emissions are driving these changes.
Researchers at the Medical College of Georgia found that glycerin helps skin cells mature properly, which can aid in treating diseases like psoriasis and non-melanoma skin cancers. Glycerol was shown to produce a signal that directs normal skin cell maturation, and its absence may lead to hyper-proliferative, thick skin.
Researchers have demonstrated that molecular memories are both durable and practical, with test results showing they can survive high temperatures and up to 1 trillion operational cycles. This finding could spur development of molecule-based memory devices, promising smaller, faster, and more powerful computers.