A new national study in Canada aims to test different types and combinations of anti-depressants and fluorescent light therapy for patients with seasonal depression. Researchers hope to better understand this debilitating condition that affects over 600,000 Canadians each year, causing significant dysfunction and impairment.
Ralph V. Chamberlin has successfully extended the mean-field theory of ferromagnetism to describe the behavior of ferromagnetic materials at lower temperatures, eliminating the need for an alternative theory. This breakthrough allows for the accurate description of ferromagnets in a wider range of temperatures.
Researchers propose a multi-million dollar observing system to identify climate signals in the Indian Ocean, potentially predicting regional rainfall months in advance. The network could help sustain crop development and influence winter rainfall across southern Australia.
Researchers found that participants with high insulin resistance were more likely to develop high blood pressure, highlighting a potential new treatment target. The study also suggests that reducing insulin resistance may help prevent hypertension and cardiovascular disease.
A team of Type 1 diabetic athletes, including University of North Carolina M.D.-Ph.D. candidate Jeremy Ackerman, will climb Cerro Aconcagua in Argentina to raise awareness about diabetes and conduct scientific research on the effects of altitude on diabetics.
A recent study by Cornell University neurobiologists found that female birds prefer males with the most elaborate courtship songs, which are associated with larger brain structures and improved learning abilities. This choice is thought to be driven by sexual selection, where females aim to pass on desirable traits to their offspring.
The discovery of a 170-million-year-old dinosaur tracksite in the Gypsum Spring Formation sheds light on the geographic distribution of dinosaurs during the Middle Jurassic period. The site preserves evidence that some dinosaurs may have been swimmers, with estimated speeds of up to 9.2 kilometers per hour.
Research finds Pneumocystis carinii pneumonia cases clustered in San Francisco and Cincinnati zip code areas, highlighting epidemiologic features of the infection. Asthmatic children's susceptibility to ozone pollution is linked to low birthweight or prematurity, with boys showing a greater response.
A team of scientists has established a formula to predict population dynamics for species more complex than single-celled organisms. Their research uses long-duration experiments and demonstrates that simple mathematical models can govern predator-prey interactions.
Researchers at the University of Iowa have discovered that perforin and interferon gamma regulate the initial immune response and residual protective immunity. These molecules control T cell generation, survival, and differentiation, allowing for a precise balance between responding to pathogens and exhausting the immune system.
A study published in the Lancet found that a catheter laser procedure combined with medication is more effective than medication alone in treating severe chest pain. The procedure, known as PTMR, stimulates new blood vessel growth and increases circulation to relieve angina symptoms.
Massive sheets of lava produced by flood basalt eruptions generated intense heat, pushing ash and gas into the upper atmosphere and causing dramatic global-scale climate shifts. These events are now believed to have contributed to mass extinctions, including those that wiped out dinosaurs.
Researchers found evidence that brain circuitry is present and well-formed at birth, contradicting the long-held view that experience shapes the brain's wiring. The study used innovative surgical techniques to reveal neural connections in newborn ferrets' brains.
Patients in managed-care plans were less likely to receive coronary angiography following a heart attack compared to those with traditional fee-for-service coverage. This procedure is highly recommended for improving treatment options and reducing the risk of a second heart attack.
A Yale study shows that combining newer antipsychotic drugs with a nicotine patch leads to nearly triple the success rate in quitting smoking for schizophrenic patients. The study found that this combination was particularly effective in reducing carbon monoxide levels, a by-product of cigarette smoke.
The Mayo Clinic report concludes that the available data are insufficient to draw definitive conclusions about the use of soy isoflavones as an alternative to estrogen for hormone replacement in postmenopausal women. Randomized, placebo-controlled clinical trials are necessary to address the potential benefits and risks of isoflavone use.
Researchers have identified a gene that allows histoplasma to infect and persist in humans. The discovery uses a novel technique that may be valuable in finding drug targets for this disease-causing fungus and others.
A new study from the University of Pittsburgh found that balloon mitral valvotomy yields similar long-term results to commissurotomy, a traditional surgical method. The procedure uses an inflated balloon to break scar tissue and improve valve function.
A study by Stanford researchers reveals that global warming is causing a significant shift in marine species distribution, with many vulnerable intertidal creatures already struggling to cope. Rising temperatures are pushing species over their thermal tolerance range, leading to declines and potential extinctions.
A new study found that blacks have a higher mortality rate than whites after coronary artery bypass surgery (CABG), with hypertension being a significant factor. The study suggests that blacks may be more prone to severe and frequent ventricular hypertrophy, an enlargement of the heart's chambers.
Despite an increasingly difficult patient population, Emory's success rate in angioplasty has progressively increased, while complications have decreased. The institution's 20-year experience shows reduced hospital stay lengths and lower costs.
A study conducted at Yale suggests that non-overweight women with abdominal fat have exaggerated responses to cortisol, a stress hormone. This leads to increased visceral fat, related to worse health outcomes like heart disease and diabetes.
A study of over 2000 heart attack admissions in Yorkshire hospitals found that women tend to be older than men but less likely to be smokers or have underlying coronary artery disease. As a result, they are almost 80% more likely to die before discharge, highlighting the need for age-adjusted treatment protocols.
The Walking A Good Path calendar is an inspirational and educational resource developed by NIDA and American Indian organizations. The calendar shares current science-based information on drug abuse, addiction, prevention, and treatment, highlighting the health risks and effective strategies for Native American communities.
Researchers found that eating and drinking before flying increases cardiac output and improves oxygen levels in the brain and organs. This can reduce the risk of fainting spells and heart attacks by up to 21%.
The National Center for Eco-Industrial Development aims to facilitate job growth and sustainable industrial expansion in economically distressed communities. The new center will encourage industrial ecology, establish eco-industrial parks and expand the use of processes to maximize communities' development potential.
Emory researchers discovered that abnormal gene silencing, caused by overexpression of methyltransferase enzymes, can lead to breast cancer progression. The silencing of the TMS-1 gene, responsible for programmed cell death, may contribute to tumor growth and resistance to conventional therapies.
A study of 300 people found that those with heart disease laughed less and displayed more anger and hostility. Researchers suggest incorporating laughter into daily activities as a potential heart-healthy habit.
A long-term study on transmyocardial revascularization (TMR) using a carbon dioxide Heart Laser demonstrates significant pain relief for five years. TMR has been shown to improve the quality of life for severe angina patients with no other treatment options.
The Val-HeFT study showed significant effects of an AT1-receptor blocker on mortality and morbidity in patients with heart failure when added to ACE inhibitor therapy. The CHARM study programme aims to provide more definitive data on the benefits of AT1-receptor blockers in treating heart failure.
The European Commission has designated Mylotarg as an orphan medicinal product for treating patients with CD33-positive relapsed acute myeloid leukemia. The compound represents a novel anticancer therapy and has shown promising results in clinical trials.
The Chicago HeartSave Program successfully reduced sudden cardiac deaths at O'Hare and Midway Airports by placing AEDs one minute apart, making them easy to spot. The devices helped minimize critical response times to emergency care and improved survival rates for victims of ventricular fibrillation.
The conference will examine the latest research efforts towards understanding and treating neurodegenerative diseases. Novel approaches using stem cells, vaccines, gene therapy and hormone modulation will be discussed.
A new study found that enrolling patients with chest pain in clinical trials takes an average of 8+ minutes longer than treating them directly. Despite this delay, researchers believe the potential benefits of participation outweigh the time difference, and doctors should enroll more patients in trials.
Researchers found that the Ku protein plays a key role in mediating mammalian telomere capping, preventing chromosomal fusion. The discovery sheds light on cellular growth control and aberrations leading to cancer. Mouse cells lacking Ku develop chromosome fusions.
A large-scale survey of over 65,000 people in Norway found that women are more susceptible to the damaging effects of cigarette smoke. Women reported higher rates of respiratory symptoms and asthma compared to men, particularly among those who smoked more cigarettes daily.
A study published by the American Heart Association suggests that laughing often and exuberantly can help reduce the risk of heart disease. Researchers compared humor responses in 150 heart patients to 150 healthy controls, finding that heart patients were 40% less likely to laugh in various situations.
Researchers identified a novel gene target, SREBP-1c, which controls the expression of lipogenic enzymes. Synthetic compounds binding to LXRa were also discovered, offering potential therapeutic targets for treating disorders like diabetes and cardiovascular disease.
The Pennsylvania State University School of Nursing was awarded the top prize for its innovative approach to gerontological nursing education, which emphasizes health and illness, developmental, holistic care. The university's curriculum incorporates separate courses, clinical sites, and partnerships with community resources.
The American Chemical Society recognizes Wallace H. Carothers' groundbreaking research in the chemistry of giant molecules, which led to the development of nylon and neoprene. Carothers' work established modern polymer science, paving the way for today's plastics, synthetic fibers, and rubber industries.
A systematic study of Greek quarries may help archaeologists pinpoint the source of famous sculptures like the Elgin Marbles. The research used stable isotopic composition and geochemical structure to deduce specific origins for ancient marble, providing new dimensions to the growing field of marble studies.
Scientists have identified a new species of right whale in the North Pacific Ocean, which is genetically distinct from other populations. The discovery was made using DNA analysis of historical specimens and suggests that there may be fewer than 300 individuals remaining in this population.
A study published in Nature reveals that individual neurons in the human medial temporal lobe selectively alter their firing rates depending on the stimulus the subjects imagined. This discovery sheds new light on how the 'mind's eye' works, providing insight into the neural mechanisms underlying visual recall and imagery.
Researchers at the University of Illinois have developed a new description of microbial kinetics based on chemiosmotic theory, providing a fundamental explanation for microbial metabolism. The unified theory predicts results from experiments under various conditions and offers a simple explanation for threshold substrate concentrations.
A study published in the journal AIDS identifies a genetic risk factor for HIV infection, specifically a variation in the RANTES gene that increases susceptibility but also slows down disease progression. Researchers found that this SNP is associated with up to twice the risk of HIV infection and takes about 40% longer to develop AIDS.
Dr. May L. Wykle receives the Doris Schwartz Gerontological Nursing Research Award for her pioneering research on minority caregivers and its impact on clinical practice and healthcare policy. Her work has mentored many doctoral students and influenced their research in gerontological nursing.
Research suggests that moving from welfare to low-wage work has no significant impact on mental health indicators among women. The study of 1,848 women found no differences in depression, self-esteem, or emotional support scores between those who remained on cash assistance and those who left the rolls for work.
Scientists at Duke University have developed a neural system that enables monkeys to control a robot arm using their brain signals, detected by implanted electrodes. The system could form the basis for a brain-machine interface to help paralyzed patients control prosthetic limbs.
A new JAMA series aims to teach doctors and nurses how to manage end-of-life care issues, as physicians are not adequately trained in this area. The series will cover topics such as symptom management, hospice care, and cross-cultural differences in dealing with death.
Researchers have uncovered a crucial interaction between an enzyme and osteoclasts, cells responsible for removing bone in the body. The connection may provide a novel target for future medications to block bone erosion associated with osteoporosis and cancers.
Researchers used contrast-enhanced MRI to assess heart damage in 50 patients. The technique distinguished between reversible and irreversible injury, allowing for more accurate prediction of surgery success.
Researchers propose that deep mantle volcanic plumes caused a sudden increase in oxygen levels, allowing for the emergence of life. The theory suggests that these plumes, rich in iron oxide, were fueled by buried magma and led to the formation of glaciers.
Yale researchers found that early life stress enhances vulnerability to drug addiction. Rat pups separated from their mothers experienced increased self-administration of cocaine as adults. The study highlights the need for targeted interventions for children with early life traumas.
A study by Wake Forest University Baptist Medical Center found that heart attack survivors experience blood vessel disease progression three to four times faster than those without heart disease. Low levels of high-density lipoprotein (HDL) cholesterol and smoking history significantly accelerate this process.
Carolina scientists have identified and purified hepatic stem cells, which can regenerate liver and bile duct tissue. The accomplishment marks a milestone for future liver regeneration through cellular therapy, potentially reducing the need for whole-organ transplants in patients with various liver diseases.
A recent study found that adolescents with both alcohol and antisocial problems exhibit an increase in serotonin function, contradicting previous research on Type II alcoholism. This suggests that serotonin dysregulation may be key to high-risk behaviors, rather than low or high levels of the neurotransmitter.
A study of 196 people with and without Parkinson's disease found that coffee use was associated with a lower risk of developing the disease. Heavier coffee drinkers exhibited fewer instances of the disease, while tobacco chewers and alcoholics were also less likely to develop the condition.
A recent study published in Alcoholism: Clinical & Experimental Research examines the influence of peer and partner drinking on adults during the year before marriage. The research reveals that individual characteristics and friends' drinking behaviors are both significant factors in shaping adult drinking habits, with the spouse's fri...
A new Yale research program aims to bridge the knowledge gap on women and drug abuse, providing training opportunities for scholars to develop sex-specific treatments and prevention strategies. The five-year program will focus on understanding the etiology of drug abuse in women and its impact on families.
The Yale School of Medicine has launched a new center to study hypoglycemia, led by Dr. Robert Sherwin and Dr. Douglas Rothman. Researchers will use various technologies to investigate the causes and solutions for hypoglycemia, aiming to prevent severe episodes.