Research estimates cod biomass on the Scotian Shelf was 1.26 million metric tons in 1852, compared to less than 50,000 metric tons today. The decline is consistent with earlier research and suggests that commercially important species biomass is only a small fraction of what existed before industrialized exploitation.
A new book explores how changing social and economic conditions are reshaping the transition to adulthood, with many young people not completing key milestones until their 30s. The authors argue that institutions and policies need to be revamped to provide stronger support for vulnerable groups.
Physician experience and annual mammogram volume are associated with improved mammographic accuracy, according to a US study. Physicians who interpret 2,500-4,000 mammograms annually have lower false-positive rates and miss fewer cancers compared to those with less volume.
Teenagers often inadvertently expose themselves to pornography while conducting legitimate internet searches. The study reveals that late childhood has become a time of relative exposure to sexualized media due to the pervasive nature of online content.
A UI study examining hazing on college campuses found that 6.7% of surveyed Cornell students participated in hazing, while nearly twice as many reported being hazed. The study suggests a gap between students' and universities' definitions of hazing, highlighting the need for education and prevention efforts.
A recent study found that natural mentoring relationships had a significant impact on teens' lives, reducing the likelihood of gang involvement and substance abuse. However, these benefits were often outweighed by other risk factors such as poverty and family relationships.
Researchers identified protein biomarkers in amniotic fluid linked to preterm labor, predicting success of cervical stitching. The study also found additional biomarkers suggesting other causes of preterm birth.
Researchers at Mount Sinai School of Medicine discovered that alpha-defensin-1, a protein found in cells, can directly inactivate HIV virus and block infection in vulnerable cells. The findings offer insight into the function of alpha-defensin-1 on both the virus and the cell, potentially leading to new avenues for prevention and therapy.
The new version of GenMAPP 2.0 incorporates various features to organize and analyze gene expression data on biological pathways, including a flexible format accepting multiple gene ID systems and species-specific databases. This update complements hierarchical clustering methods and enables convenient display of data on web sites.
Researchers found BDNF is as effective as VEGF in inducing growth of tiny blood vessels in organs with TrkB-expressing cells. It recruits blood stem cells that contribute to neo-angiogenesis, providing a novel therapeutic protein for organ-specific angiogenesis.
Researchers found that glycyrrhizic acid from licorice can kill cells infected with the Kaposi sarcoma-associated herpesvirus. The compound targets genes required to maintain the virus in a latent state, potentially leading to novel anti-herpesvirus agents.
A study found that parents quitting smoking before their children reached third grade is associated with nearly double the chances of their children quitting smoking in young adulthood. The findings suggest that helping parents quit smoking should be considered in future public-health interventions targeting youth smoking.
A new study found that colorectal cancer screening strategies had similar participation rates, regardless of the screening method offered. Tamoxifen use was also associated with an increased risk of endometrial cancer in both pre- and postmenopausal women.
Researchers found decreased calcium responses in olfactory receptor cells from patients with bipolar disorder. These findings may provide new targets for drug development and improve treatment predictions.
Researchers use network theory to find invasion hubs where invasive species spread fastest, targeting control efforts at these points. The study found Lake Muskoka and two other lakes as potential invasion hubs in Canada.
The DOE JGI has launched a public online microbial genome data clearinghouse, IMG, to facilitate the analysis and comparison of microbial genomes. The platform offers a comprehensive system for exploring and annotating DOE JGI-sequested genomes, enabling scientists to tap into the diversity of microbial environments.
A Cornell University-led team has discovered a mysterious population of distant galaxies radiating in the infrared spectrum with hundreds of times more power than our Milky Way galaxy. The galaxies are thought to be ultraluminous infrared galaxies powered by massive starbursts or active galactic nuclei, and their discovery is published...
A study involving genetically altered mice has found similarities with essential tremor disease in humans, suggesting that the GABA system plays a role in the condition. The findings may lead to new treatments for essential tremor, which affects an estimated 5 million Americans.
Researchers found that patients given folic acid and vitamin B12 had a 38% decrease in plasma homocysteine levels, while the placebo group experienced a 31% increase. This combination therapy prevented hip fractures in stroke patients despite frequent falls, attributed to osteoporosis.
Mutations in the EGFR gene are more common in people with lung cancer who never smoked, and these mutations may predict a dramatic response to certain drugs. The study's findings suggest two distinct molecular pathways involved in lung cancer formation, one affecting smokers and the other non-smokers.
A clinical trial found that a device used to clear debris in arteries during PCI did not provide benefits for patients. Despite successful retrieval of embolic debris, the device failed to enhance myocardial reperfusion success, reduce infarct size, or improve clinical outcomes.
Researchers at University of California - San Diego have made a significant breakthrough in treating inflammatory bowel disease by discovering the molecular mechanism behind IFN-α/β therapy. The study reveals that activated IFN-α/β plays a protective role in colonic inflammation and maintains intestinal homeostasis.
Researchers found that training designed to eliminate racial biases in police interactions can be effective in reducing biased reactions. The study used a simulation to test the impact of different approaches on officer behavior, and the results suggest that such training could lead to improved outcomes for all parties involved.
The NHGRI has approved a plan to sequence the genomes of 12 new organisms, including marmoset, skate, and disease-carrying insects, to gain insights into human health and disease. The project aims to identify genetic variations associated with common illnesses and develop powerful tools for biomedical research.
Researchers are drawing inspiration from honeybees' collaborative decision-making and ants' behavior to develop new collaboration frameworks for disaster relief efforts. The study aims to create flexible networks of responders who can act based on local information, mimicking the spread patterns of viruses and rumors.
Researchers found that TLR9-induced protection is mediated through type I IFN induction, which suppresses inflammation. Type I IFN has a protective role in colon injury and protects against colonic inflammation.
Martin Bengtsson, a young Swedish physicist, has been awarded the first Best Paper Award by the Analytical and Bioanalytical Chemistry Journal. His paper introduces a method to decrease laminar flow in microchannels without adding moving parts, which could become an important tool in microreactor technology.
A study of over 1.2 million mammograms found that experienced physicians detected cancer with higher accuracy and had lower rates of false positives. The research suggests that raising the minimum annual volume requirements for qualified mammographers could improve the overall quality of screening mammography in the US.
A Cornell University study found that tumor incidence was reduced by 17, 39, and 44 percent in rats fed the human equivalent of one, three, or six apples a day. The researchers also discovered that phytochemicals present in apples have potent antioxidant and anticancer activities.
Researchers found that overweight patients, those with moderate income, and women survived longer with esophageal and stomach cancer. Premature birth significantly increases the risk of esophageal adenocarcinoma, potentially linked to gastroesophageal reflux disease.
A study analyzing data from four clinical trials found that older patients with lymph node-positive breast cancer can tolerate standard and intensive chemotherapy regimens similarly to younger patients. The findings suggest that age is not a barrier to the effectiveness of adjuvant chemotherapy in healthy older women.
A recent study published in JAMA found that distal microcirculatory protection devices used during angioplasty procedures in heart attacks failed to improve patient outcomes. Despite successfully removing debris from arteries, the treatment did not reduce major adverse cardiac events or affect ST segment normalization.
A team of scientists found that solar storms and Arctic winds led to a 60% ozone reduction in the upper stratosphere in 2004. The study used data from seven satellites to conclude that energetic particles from the sun triggered chemical reactions, leading to increased nitrogen oxide levels.
Researchers found celecoxib reduces prostate cancer cell growth and proliferation by targeting both COX-2 and cyclin D1. In animal models, celecoxib also reduced tumor mass and blood vessel density, suggesting a potential new therapeutic approach for treating prostate cancer.
Researchers at Johns Hopkins Medicine have developed a new method to educate T-cells in the bone marrow, increasing their ability to recognize and kill cancer cells. The approach shows promise for treating myeloma and potentially other blood and solid tumors.
Researchers identified specific genetic variants that increase the risk of kidney damage after heart surgery. Patients with these polymorphisms have a higher likelihood of renal dysfunction due to amplified inflammatory responses and vascular constriction.
Dr. Strahl's research focuses on histone modifications, specifically the addition of ubiquitin to histone 2B by Rad6 enzyme. He also explores histone methylation and its regulation through various biochemical pathways.
A Mayo Clinic study found that intermediate-risk patients with unstable angina who underwent exercise treadmill testing could be safely discharged from the emergency room without significant events. In contrast, those not eligible for testing were more likely to receive costly stress imaging and hospital admission.
Researchers at Emory University found that infected monarch butterflies flew slower, were tired faster, and had reduced flight ability compared to healthy ones. The study suggests parasite burdens are lower in migratory populations, which may have implications for conservation efforts.
The Bridging the Rift project is a unique collaboration between Arab and Israeli scientists, with 40 researchers from Israel, Jordan, and the US working together. They conducted a joint biological field survey in January, collecting microbes and plants that thrive in the harsh desert environment.
Researchers found that African-American patients receive lower rates of cardiac catheterization for heart attacks compared to white patients, despite disparities narrowing over time. The study highlights the need for improved patient education and dialogue with medical teams to address racial disparities in healthcare.
QS-21A has been shown to significantly improve the body's immune response in vaccine therapies against aggressive diseases such as melanoma and HIV-1. By improving its potency, QS-21A could save patients money on expensive vaccines and stretch limited supplies.
Researchers at Kansas State University have created a system using personal digital assistants that allows instructors to assess students' understanding in real-time. This technology enables instructors to provide individualized feedback, promoting active learning and social interaction among students.
Researchers have identified networks of genes that respond to alcohol in the brain, which may play a role in determining genetic differences in behavioral responses to alcohol. The study found that certain genes were regulated differently in two mouse strains, leading to distinct behavioral responses to alcohol.
Researchers propose using acting techniques to enhance physician empathy. Deep acting uses imagination to generate genuine feelings, while surface acting displays behaviors that appear empathic. This approach aims to improve professional satisfaction and reduce burnout among doctors.
A recent study found that epidermal growth factor receptor (EGFR) gene mutations are more common in never smokers, females, and patients of East Asian ancestry. The mutations were also associated with increased sensitivity to gefitinib and erlotinib, tyrosine kinase inhibitors.
Researchers at NYU School of Medicine discovered that glycyrrhizic acid can kill cells infected with Kaposi sarcoma-associated herpesvirus, triggering apoptosis in transformed B lymphocytes. This finding suggests a potential new treatment approach for latent viral infections.
Researchers at Purdue University have developed a method to create DNA-based structures using magnetic nanoparticles and restriction enzymes. By clipping the DNA 'wires' into smaller pieces, they aim to reduce production costs and increase efficiency in electronic devices.
A recent workshop on SARS published in the American Thoracic Society's peer-reviewed journal emphasizes the need for antiviral drugs to prevent and treat SARS. The study also explores the association between obesity and asthma, finding a significant link in female children who become overweight during late adolescence and early adulthood.