The American College of Physicians released guidelines for treating atrial fibrillation, an abnormal heart rhythm that can lead to stroke if uncontrolled. Researchers also reviewed 18 studies on melanoma and sunscreen use, finding no link between the two conditions.
The Penn State project aims to create interactive maps of cancer rates in specific geographic areas, enabling better planning and evaluation of cancer interventions. Based on prostate and colorectal cancers, the model can be expanded to other states, utilizing available screenings and interventions to reduce cancer burden.
Researchers found that smaller bubbles in champagne release more flavor and aroma molecules, creating a better-tasting wine. The study suggests that dissolved salts, carbohydrates, and minerals play a major role in bubble formation.
A phase 3 clinical trial found that alefacept reduced CD4+ and CD8+ memory T cell counts, leading to improved psoriasis symptoms. The treatment's benefits lasted longest in patients with the greatest reduction in T cell counts.
The study found that intermittent periods of decreased oxygen increased concentrations of the BDNF protein in the phrenic nerve, leading to enhanced respiratory memory. This breakthrough could lead to new therapies for sleep apnea, spinal cord injuries, and other breathing disorders
The Lehigh group achieved breakthroughs in near-infrared-range (1300-nm) InGaAsN quantum well lasers using metalorganic chemical vapor deposition (MOCVD). Their findings have the potential to lead to the production of low-cost and high-performance 1300-nm VCSELs capable of a transmission rate of 10 GB per second.
A new urine-based test has been developed to detect kidney cancer, showing promising results in early diagnosis. The test identified gene changes in the urine of patients with kidney cancer that matched those found in tumor samples, indicating its potential as a diagnostic tool.
Researchers developed a mouse model of neurofibromatosis 1 to study brain tumor growth, finding that tumors require permissive environments. Astrocytes with both copies of the Nf1 gene lacking in surrounding cells were found to develop into tumors, highlighting the importance of location in cancer development.
Two studies found that macrophage infiltration of adipose tissue is characteristic of human obesity and precedes insulin resistance. Treatment with an insulin-sensitizing drug triggered downregulation of inflammatory genes, suggesting a potential therapeutic target.
The study found functionally related genes were co-expressed across six distantly related organisms, including bacteria, yeast, and human. The researchers discovered conserved transcription modules that provide clues to the evolutionary building blocks generating diversity in cells.
Researchers tracked the movement of transplanted stem cells, revealing that they drift throughout the body and settle in specific locations. The study's findings could lead to improved techniques for transplanting bone-marrow stem cells and new therapies for cancer and immunodeficiencies.
A recent study by Georgia Tech shows China has doubled its score on technological standing since 1999, moving from 20.7 to 49.3, and is now above Singapore and the Netherlands. The country's progress stems from its manufacturing facilities, economic institution reforms, and human capital development.
A study by UCLA researchers found that individuals with shy personalities tend to have higher viral loads and faster disease progression, even on antiretroviral therapy. This suggests that high-stress individuals may be more susceptible to HIV replication due to their heightened nervous system response.
Researchers found a significant association between stroke and an increased risk of developing Alzheimer's disease in older patients. Patients with a history of stroke were 60% more likely to develop AD, with the risk highest among those with established vascular risk factors.
A study found that heterozygous disruption of the beclin 1 autophagy gene promotes tumorigenesis. Autophagy has been shown to have a tumor suppressor role, and this study highlights its importance in cancer development.
Researchers at Ohio State University have created the first DNA gene chip for horses, containing over 3,200 expressed horse genes, allowing for rapid scanning of individual horse genes. This breakthrough could lead to better accuracy in studying human disease and developing new treatments.
Researchers at Columbia Climate School presented various studies, including predicting earthquakes to urban heat island effects. One study found that human activities may have significantly raised seismicity levels in stable continental regions during the last half-century. Another study examined the impact of climate change on air pol...
A study on beclin 1 autophagy gene reveals its role in tumor suppression. In another study, researchers found that obese fatty tissue is characterized by inflammation, which may contribute to insulin resistance. These findings suggest that autophagy and inflammation play crucial roles in cancer biology and obesity-related diseases.
A randomized, double-blind study found that baclofen significantly reduced cocaine use in recovering addicts when used with substance abuse counseling. The study monitored 70 outpatients for 16 weeks and showed a decrease in recent cocaine use compared to the placebo group.
A clinical trial of Prana's Alzheimer's disease drug, PBT-1 (Clioquinol), has shown a significant reduction in AD development. The study found an average change in score at 24 weeks of about 1.5 points on PBT-1 and about 8.9 on placebo.
A study by Ohio State University researchers found that the genes TOC1 and ZTL control a plant's circadian clock. The study revealed a strong physical interaction between these genes, with ZTL degrading TOC1 to regulate the clock's pace. This discovery sheds light on mechanisms controlling plant flowering time and may benefit agriculture.
Researchers found that multiple caspases and regulators are required for proper sperm formation in fruitflies, highlighting a non-apoptotic process. This discovery could provide insights into male infertility and suggest possible treatments.
A new study suggests that increasing funding for immunizations by just $1 per month could lead to improved practices in children's clinics. However, the cost of implementing recommended upgrades, such as auditing and feedback systems, may be prohibitively expensive for some clinics.
Researchers developed a novel metal-protein attenuating compound (MPAC) to target beta-amyloid interactions and slow cognitive decline. The pilot phase 2 clinical trial found that plasma beta-amyloid levels declined in patients taking the compound, while those on placebo levels increased.
Research finds that snake venom evolved only once in evolution, around 60 million years ago, and is now found in virtually all advanced snakes. A study of over 2,000 snakes from around the world has discovered that many non-venomous species possess complex venoms.
Researchers found that a compound blocking NPY activity delays alcohol self-administration and reduces rewarding effects of alcohol in mice. This study suggests L-152,804 has potential as a treatment for alcoholism.
A nationwide survey found that 56% of women with early stage breast cancer received less than 85% of their prescribed chemotherapy dose intensity. Treatment delays and dose reductions were common due to neutropenia, a shortage of infection-fighting white blood cells.
The genome sequence of Rhodopseudomonas palustris reveals its metabolic versatility, including ability to produce hydrogen and degrade toxic compounds. The bacteria's unique genetic capabilities make it a promising candidate for biotechnology applications, such as biofuel production.
A study found that behavioral anger contributes the most to alcohol-related aggression among men and women. Researchers examined healthy social drinkers and found that those with higher behavioral and cognitive anger scores were more likely to exhibit aggressive behavior when intoxicated. The findings suggest that understanding the rel...
A study found that individuals with high levels of social anxiety use alcohol more often to relieve social discomfort and avoid social situations without alcohol. They experience greater relief from anxiety in social situations, but not full relief, suggesting a self-medication strategy that may lead to increased risk of alcoholism.
A study found that individuals with co-existing alcoholism and antisocial personality disorder exhibit reduced responsiveness to aversive stimuli, including unpleasant photographs. This hyporesponsivity may facilitate maladaptive behavior and increase vulnerability to problems like criminality and substance abuse.
Researchers at Sandia and Columbia University have successfully cooled molecules to millikelvin temperatures, a significant milestone in the quest for molecular ultra-coldness. The new technique uses atomic beam intersection, which generates cold molecules despite being inefficient, with one molecule in a million cooling collisions.
Research at NASA's Jet Propulsion Laboratory and the University of Montana observes earlier spring thawing trends across northern high latitudes. This regional change may promote more carbon uptake by vegetation than release into the atmosphere, potentially affecting Earth's climate.
Duke University offers a tropical biology research experience with stipend, airfare, and accommodation, as well as equipment allowance. Applications are due by March 1, 2004, for faculty at minority serving institutions.
The ICESat mission is measuring the surface elevations of large ice sheets covering Antarctica and Greenland, determining how they are changing. The satellite's data are helping scientists understand how life on Earth is affected by changing climate, and providing critical observations of atmospheric particles.
Researchers believe SARS evolved from a rare recombination of mammalian and avian viruses, enabling it to evade human immune systems. The study sheds light on the evolutionary history of SARS, which may hold clues to designing effective treatments and vaccines.
St. Jude scientists have discovered a new method to target the Topoisomerase 1 enzyme, crucial for cell division, leading to potential novel anti-cancer drugs that can work in combination with existing agents. This approach may also reduce cancer cells' ability to become resistant to treatment.
A new study finds that declining winter habitats of migratory songbirds significantly affect their ability to reproduce. Researchers measured stable carbon isotopes in the birds' blood, revealing a 'food chain signature' tied to habitat quality.
A database study suggests that starting with lower doses of leflunomide can help patients tolerate the medication better, reducing adverse side effects and improving treatment outcomes. The research found no significant increase in severe toxicity, contrary to concerns raised during initial FDA approval.
New evidence reveals urban areas are altering rainfall patterns and daily precipitation trends, with higher rates during summer months downwind of large cities like Houston and Atlanta. Cities tend to be warmer than surrounding suburbs and rural areas due to urban heat islands.
Researchers at Express Scripts found that COX-2 prescribing physicians often co-prescribe gastroprotective drugs, contradicting expert estimates. This challenges the use of expert opinion in estimating practice pattern model inputs and warrants re-evaluation of COX-2 cost-effectiveness models.
A NASA-funded study analyzed urban growth among 30 mid-sized cities using Landsat satellite data, revealing three common spatial patterns of land development. The research provides current global assessments of urbanization, including growth in Africa, and highlights the need for updated maps to inform climate modeling and social scien...
Researchers are working on a method to accurately estimate coral reef health from sensors on airplanes and satellites. By analyzing light reflectance from corals, scientists can detect early signs of disease and stress, providing valuable insights into marine ecosystem health.
Scientists have discovered that radioactive potassium can form an alloy with iron at high pressures and temperatures, potentially providing a significant heat source in the Earth's core. This finding could explain the missing potassium in the Earth's crust and mantle, and may help to power convection in the core.
Researchers use climate models to analyze past solar energy changes and test regional climate predictions under global warming scenarios. The study reveals smaller background trends in solar energy are in better agreement with long-term climate records, providing insights into Earth's changing climate.
Global per capita greenhouse gas emissions need to be reduced to a small fraction of present levels within the next hundred years. A gradual transition to an emission-free economy is possible at an acceptable price, with significant reductions in emissions necessary beyond the Kyoto horizon.
Cardiff University scientists have developed a new method to identify the prey spiders eat by analyzing their stomach contents using DNA. This technique shows that money spiders prefer certain species of springtails, which could lead to better control of aphids and boost spider populations.
Simulations show that compression waves change the atomic arrangement of glass, resulting in a denser and less brittle material. The study, published in Physical Review Letters, may have implications for optimizing glass properties.
Researchers aim to understand the functions of Nostoc punctiforme's 7,000 genes and its potential to domesticate crop plants for nitrogen fixation. They plan to study gene expression and environmental responses to improve the process.
A team of UC Davis students conducted experiments on formation of new materials by combustion in an electric field using NASA's 'Vomit Comet' aircraft. The low-gravity environment enhanced the effect of the electric field, creating unique properties in new materials.
A study found that nearly one-third of online bladder cancer information is outdated and inaccurate, with limited information on treatment options and follow-up care. The researchers recommend using reliable sources such as the National Cancer Institute and MEDLINEplus for accurate information.
A study found that NS temperament in adulthood was predicted by an interaction between the DRD4 gene polymorphism and a hostile childhood rearing environment. Participants with certain genetic variants and adverse childhood experiences had a higher risk of exhibiting high novelty seeking scores.
Researchers discovered that stress can alter gene expression, leading to enhanced fear memory and long-term potentiation. By using a new gene-based 'antisense' drug, they successfully prevented these changes, attenuating the elevated freezing response and paving the way for novel treatments.
Researchers have deciphered the genome of Geobacter sulfurreducens, a microbe that can remove dissolved uranium from groundwater and generate electricity. The study reveals new capabilities, including enhanced electron transport and metal reduction genes.
A five-year study found that mechanical assist devices increased survival rates to hospital discharge for 77% of supported children. External mechanical hearts and ECMO provided the safest forms of support in urgent situations.
The NIH consensus panel confirms the effectiveness of total knee replacement surgery, highlighting the importance of surgeon volume and proper prosthesis alignment to minimize long-term complications. Computer navigation technology may eventually reduce malalignment risks but is currently unproven and costly.
OXiGENE has expanded its research and development program in ophthalmology following a significant improvement in a patient with myopic macular degeneration. The patient's vision was restored to 20/20 after treatment with CA4P, a vascular targeting agent.
The cold-chain hypothesis proposes that psychrotrophic bacteria in refrigerated foods contribute to Crohn's disease. These bacteria have been identified in disease lesions and may trigger excessive host responses.
Researchers have decoded the genome of Geobacter sulfurreducens, a microorganism that can clean up uranium contamination by precipitating radionuclides and metals from groundwater. The discovery opens up new strategies for bioremediation and the potential to generate electricity through bio-batteries.
Researchers say governance of critical resources is a struggle, but that humans can establish effective stewards through adaptable rules and dialogue. Successful examples include the Maine lobster fishery and Montreal Protocol on stratospheric ozone.