Researchers found that genetic variations in XPD and XRCC1 genes are associated with decreased median survival in non-small cell lung cancer patients. Patients with more variations in these genes had shorter survival times, with those having no variations surviving the longest.
Three University of Houston students, Jose Figueroa, Adham Bear, and Marisa Rodriguez, won awards at a recent symposium for their research in liver disease, cancer and insomnia. Their studies focus on biological clocks, protein-tRNA interactions and liver development.
Researchers analyzed data from over 60,000 women and 25,000 men to determine if there is a difference in lung cancer risk between sexes. The study found no evidence of a higher risk in women, although some subtypes may be more prevalent.
Researchers at Stevens Institute of Technology have successfully demonstrated a new method for controlling light with light, using near-infrared and mid-infrared lasers. This breakthrough has significant implications for secure, all-optical transmission of voice and data, overcoming limitations of current near-infrared technology.
The new Medicare drug law creates a coverage gap, or 'donut hole,' where chronically ill patients will bear the greatest burden. Many with chronic conditions will face high out-of-pocket costs for medications, exacerbating health problems and increasing healthcare expenses.
A new RNAi delivery system has been developed to target brain cancer cells, using antibodies to cross the blood-brain barrier. The treatment has shown promising results in mice with brain tumors, increasing survival time by almost twice as much as a control group.
A study of 338 Chicago neighborhoods found that areas with low collective efficacy had higher asthma rates due to lack of trust, poor air quality, and limited access to health services. Neighborhoods with high collective efficacy, on the other hand, had lower asthma rates due to stronger social connections.
This June 2004 Ophthalmology Journal issue presents various studies on retinal detachment, glaucoma valve implantation, and age-related maculopathy. The efficacy and safety of adjunctive Mitomycin C during Ahmed Glaucoma Valve Implantation are also examined.
Long-term yo-yo dieting has a negative impact on immune function, with frequent weight loss episodes associated with decreased natural-killer-cell activity. Women who maintained stable weight for five years showed 40% greater NK cell activity compared to those with unstable weight.
Researchers developed a new fluid mechanical model system that simulates the active nature of the arterial system, providing insights into why stenting in forked regions has low success rates. The study suggests stenting only the main branch for optimal healing and maintenance of open vasculature.
Joseph M. Grogan, a Mechanical Engineering graduate, was recognized as a Tau Beta Pi Fellow for his academic excellence and exemplary character. He will pursue his master's and doctoral degrees in manufacturing engineering at the University of Pennsylvania.
Researchers have found that women with visceral fat experience increased lipolysis, the breakdown of fat cells, which can lead to weight loss. The study suggests that this type of fat may be particularly responsive to diet and exercise.
A large study of over 400 oral cancer cases and 600 healthy controls found no link between marijuana use and increased risk of oral cancer. Marijuana users with certain genetic variations were also not at higher risk than those with normal genes.
Researchers at Kansas State University are using the red flour beetle's genome to identify regions important for directing gene activity. The study aims to develop new strategies of insect control and advance understanding of insect genetics and development.
The Virtual Haptic Back system uses a sophisticated haptic interface to simulate the sensation of touching a human back. Medical students can practice palpation skills on simulated backs, improving their ability to diagnose dysfunctions and address two major challenges in osteopathic doctor training.
A team of astronomers has discovered hundreds of hidden supermassive black holes in the distant universe, invisible to optical telescopes. The new observations combined data from NASA's Hubble Space Telescope, Chandra X-ray Observatory, and Spitzer Space Telescope, revealing objects that were previously thought to be missing.
A study suggests that racial diversity in educational settings promotes more complex thinking and diverse thought processes among students. When students interact with collaborators from different racial backgrounds, they rate their ideas as more novel and demonstrate higher levels of complex reasoning.
Researchers found that Puerto Rican children with parents reporting asthma were more likely to have depressive disorders. Children experiencing asthma attacks were also at higher risk for anxiety disorders, including separation anxiety.
A Stanford study found that a sting-inhibiting cream reduced swelling and discomfort after exposure to jellyfish tentacles. The cream works by repelling water, disrupting communication systems, and mimicking a substance found in the jellyfish bell.
Researchers at Tufts University have discovered an extracellular form of heat shock protein 90 (hsp90) involved in cancer cell invasion, a key step in tumor progression. The study highlights the potential for developing antibodies against hsp90 as a new treatment option for cancer.
The study found that 4.3% to 26.4% of adults in 14 countries had any mental disorder, with serious cases associated with substantial role disability. Despite high prevalence, 35-50% of serious cases and 76-85% of less-developed country cases received no treatment.
Researchers developed a colorimetric detection capability for Nanosphere's nanoparticle-based molecular detection systems, improving the identification of genomic DNA, RNA, and protein targets. The new technology enables sensitive and specific detection without amplification procedures.
A study found that users of reduced exposure tobacco products experienced decreased levels of nitrosamines in their urine after switching, with medicinal nicotine groups showing greater reductions. However, the actual reduction in carcinogen exposure for OMNI cigarette users was less than advertised.
Researchers found that bone marrow stem cells can differentiate into liver cells within days, restoring liver function in injured mice. The study suggests a new approach to treating chronic diseases like diabetes and cirrhosis of the liver.
Researchers found that girls using unhealthful weight-control behaviors had significantly lower intakes of fruit, vegetables, and grains compared to those with healthy behaviors. Boys using unhealthful behaviors did not have poorer dietary intakes than those with healthful behaviors.
Astronomers have observed features of nearby galaxy M33 using infrared pictures from NASA's Spitzer Space Telescope, revealing details hidden to the human eye. The galaxy is a gigantic laboratory where dust is created in novae and supernovae, being distributed in giant star winds and reborn in new stars.
Researchers will study tree rings to reconstruct regional climate histories and analyze relationships between climate variables, leading to improved long-term forecasting of the Asian monsoon's impacts on global population and agriculture.
Researchers found that top chess players' performances in fast-paced blitz chess are closely tied to their ranks in standard chess. In contrast, lower-ranked players see less correlation between the two. This suggests that experts rely on lightning-fast intuition, while less-skilled players struggle with time constraints.
A study of 19,537 patients found that those taking cholesterol-lowering drugs statins before admission had better hospital outcomes than non-statin users. Meanwhile, researchers discovered limited information on the effectiveness of bioterrorism surveillance systems in detecting illnesses and emerging infections.
A study by Rockefeller University researchers reveals that a single molecular pathway controls both cell growth and death in a type of lymphoma cancer. The NF-kappa B signaling pathway, responsible for promoting cell growth, also regulates the p53 tumor suppressor protein's function, which normally destroys harmful cells.
An international team has defined a previously undescribed inherited cardiac arrhythmia syndrome caused by mutations in the ankyrin-B gene. The syndrome, distinct from Long QT Syndrome, is characterized by abnormal heartbeats and increased risk of sudden death, particularly among young people.
Researchers found almost half of patients in Serbian emergency departments experienced depression, while over one in eight suffered from PTSD. Symptoms were more prevalent among older patients, those with lower social support, and those living in remote areas.
The study found annual cost savings ranging from $510,000 to $13 million for different ICU bed sizes, with a best-case scenario demonstrating up to $4.2-$13 million in savings. Implementing intensivist staffing can also reduce hospital mortality by 30% and potentially save 162,000 lives annually.
The NCAR instrument provides unprecedented views of the solar corona's magnetic structures, enabling scientists to analyze magnetism in the corona and relate it to emerging features like prominences and coronal mass ejections. This data will aid space weather forecasters in predicting solar storms that can impact Earth's infrastructure.
Scientists at NCAR's High Altitude Observatory developed a new model that accounts for the evolution of sunspots caused by plasma circulation. The forecast predicts solar storms and cycle 24 starting around 2007-2008, with potential implications for understanding stars similar to the Sun.
Researchers have identified a critical regulatory region for the development of the enteric nervous system, which plays a vital role in gastrointestinal functions. Genetic mutations in this region may lead to incomplete development of the enteric nervous system, often causing Hirschsprung disease.
A study by the American Society of Plastic Surgeons suggests that breast reduction can decrease the chance of developing breast cancer by 50-70 percent in high-risk women. The report is based on six observational studies conducted in the US, Canada, Denmark, and Sweden, examining over 32,000 women.
Researchers discovered that mice with the highest metabolic rate lived 36% longer than those with lower rates, potentially adding an extra 27 years to human lifespan. The most metabolically active mice contained factors that made their metabolism less efficient but reduced toxic by-products called oxygen free radicals.
A survey of 73 social workers in the Carolinas found that over a quarter reported similar comments from patient family members. The study suggests that hospice patients considering hastening death may differ from typical patients, with higher rates of cancer. Social workers can provide assessment and intervention to address these needs.
Researchers at Penn State found lags between the changes in forces and strength in laboratory simulations, with delays ranging from seconds to weeks after initial earthquakes. The study suggests a competition between compaction and dilation of granules in gouge zones contributes to delayed fault movements.
A recent analysis of lung cancer screening studies found that CT scans do not save lives and may even be counterproductive. The study's authors estimated that between 4.1 and 5.5 patients per thousand would die of lung cancer after screening, similar to the mortality rate without screening.
Researchers found that women with breast tumors retaining the Stat5 protein biomarker have a highly favorable prognosis and may be cured by surgery alone. The study suggests that detection of this marker could lead to improved individualized therapy, including more careful follow-up and aggressive treatment for high-risk patients.
A Clemson researcher has received a grant from the Komen Foundation to further study the combination of a mutated prolactin receptor antagonist (PRL antagonist) and Herceptin, a breast cancer drug. The goal is to develop an effective treatment for aggressive subtypes of breast cancer.
Astronomers using the European AVO Virtual Observatory have discovered a whole population of obscured, powerful supermassive black holes in the GOODS survey fields. The team found thirty objects, which they believe were underestimated by a factor of two to five.
A recent study published in Science has found that tropical vegetation changes lagged local tropical climate shifts by 25 to 50 years. This contradicts previous research suggesting a high-latitude trigger for abrupt climate shifts. The researchers used sediment cores from the Cariaco Basin in Venezuela to make their findings.
The Ecological Society of America presents an action plan to address growing environmental challenges globally. The report emphasizes the need for integrating ecological knowledge into policy and management, fostering an ecologically knowledgeable public, and building infrastructure for ecology.
Dr. Charles Pak, a renowned researcher, has been recognized with an international award for his groundbreaking work on kidney-stone disease treatment methodologies. He has developed several drugs used worldwide and diagnostic methods for measuring risk factors, improving patient outcomes.
Researchers found that cross-priming, a key mechanism in T-cell activation, is directly correlated with the levels of whole proteins expressed by virus-infected cells. This new information could lead to the development of vaccines effective against infectious diseases such as HIV/AIDS and malaria.
Researchers at UCLA successfully synthesized three identical, mutually interlocking Borromean rings around six metal templates. The complex seven-step synthesis required the use of computational chemistry and a high-risk approach.
Scientists found prolonged changes in hydrothermal activity after a magnitude-7.9 Denali fault earthquake in Alaska triggered more than 1,000 small earthquakes in Yellowstone within a week. Some geysers erupted more frequently while others less often due to changes in water pressure and underground conduits.
A study by Johns Hopkins Medicine found that nearly half of ovarian cancer surgeries in Maryland were performed by low-volume surgeons, those with four or fewer cases per year. High-volume surgeons, who perform more than 10 cases per year, are more likely to accurately assess disease stage and increase survival rates.
A new government survey reveals that 36 percent of US adults use some form of complementary and alternative medicine (CAM), with prayer being the most commonly used therapy. The survey found that CAM use was more prevalent among women, those with higher education, and people who had been hospitalized in the past year.
A study published in BMC Medical Research Methodology revealed that over 38% of Nature papers and a quarter of BMJ articles contained at least one statistical error. The researchers suggest making raw data freely available to minimize the impact of errors, which could have important practical consequences.
Researchers from NJIT and Caltech combined NASA cloud data with earthshine records to analyze Earth's reflectance and global cloud cover. The study suggests that Earth's average albedo varies considerably from year to year and decade to decade.
A recent study has found that COX-2 inhibitors may have a lower risk of congestive heart failure compared to non-selective NSAIDs. COX-2 inhibitors rofecoxib and celecoxib showed significantly different risks of hospital admission for heart failure, with users of celecoxib having the same rate as those who had never used NSAIDs.
Loyola Medicine is conducting a clinical trial testing a new oxygen-carrying blood substitute for trauma patients. The study aims to compare the survival rate of patients receiving the blood substitute with those receiving saline solution. Community outreach efforts have been made to inform the public about the trial.
Research finds that mitochondrial function decline is a critical mechanism driving aging, leading to premature aging in mice. The study highlights the potential for protecting mitochondrial DNA from damage to slow down aging and treat related pathological changes.
New research indicates that hormone therapy may still offer important health benefits to postmenopausal women. The study's authors argue that the effects of different estrogens and progestins can vary significantly depending on formulation, dosage, and administration method.
Scientists have discovered that ribosomes' universally conserved nucleotides are not crucial for building proteins but instead aid in their release. The findings challenge long-held ideas about protein synthesis, suggesting a new model for the ribosome's function.
Researchers found that fig extracts inhibited the growth of E.coli and Salmonella bacteria, while control samples showed increased bacterial loads. The findings could lead to the use of fig extracts as a natural additive in processed foods.