A study found that both short and long sleeping times are associated with an increased risk of future body weight and fat gain in adults. Adults who slept less than 7 hours or more than 10 hours per night gained more weight over six years compared to those who slept for 7-8 hours.
A study by McMaster University finds that most errors are repeated due to the act of making a mistake constituting learning. Testing 30 students, researchers found that those who spent longer time trying to retrieve words were more likely to repeat the same error state.
Researchers at UC Irvine have discovered the key to controlling polyketide ring formation, enabling the creation of new drugs for cancer treatment and cholesterol reduction. This breakthrough could lead to significant advancements in pharmaceuticals, with potential applications in obesity treatment and stem cell research.
Dr. Gitlin emphasizes the need for research on childhood diseases and their potential prevention through genetics and nutrition. His work aims to identify key factors leading to diseases in infancy, which may affect them later in life.
Scientists evaluate the impact of grain-based ethanol production on water quality in the US. The study recommends advanced conservation measures to minimize nutrient losses from corn production, but a viable cellulosic ethanol industry could provide water quality benefits.
Lawrence Livermore National Laboratory scientists performed a 400-year high-resolution global ocean-atmosphere simulation using the Community Climate System Model (CCSM). The study achieved substantial improvements in simulated surface winds and sea surface temperatures, as well as improved tropical variability and Arctic sea ice thick...
A long-term study of twins has led USC researchers to find potential links between Hodgkin lymphoma and levels of an immune response protein, interleukin-12. Lower levels of this protein may increase susceptibility to the disease.
A JAMA study found that using MC-1 before and after CABG surgery did not lower the risk of heart attacks or cardiovascular deaths. The treatment showed no benefit in any subgroup or other outcomes.
Scientists at Argonne National Laboratory are exploring the use of algae to produce hydrogen gas through photosynthesis. This method could potentially create a large amount of hydrogen gas comparable to oxygen production, with benefits including reduced competition for food resources and easier harvesting.
Researchers have developed new methods to block salt crystallization, a major cause of damage to historic buildings. These techniques have been tested on sodium nitrate and have shown effectiveness in reducing damage to ornamental porous materials.
Scientists will investigate how air pollution contributes to climate changes in the Arctic by analyzing air and aerosol samples collected during the campaign. The study aims to provide a comprehensive understanding of atmospheric chemistry and climate effects in the region.
Researchers at the University of Missouri found that synthetic hormone replacement therapy can promote breast cancer growth, but an antibody and small molecular drug may prevent tumor cell expansion. The study suggests a potential link between hormone replacement therapy and breast cancer progression.
Researchers have developed an assay to identify antibodies specific to Mycobacterium avium complex (MAC), distinguishing MAC-related pulmonary disease from tuberculosis in under eight hours. The test showed high sensitivity and specificity, reducing the risk of misdiagnosis and inappropriate treatment.
A genetic screen revealed that Drosophila mutants with lower arousal thresholds have difficulty staying asleep, likely due to hyperarousability. This finding suggests that changes in arousal threshold may be a common mechanism underlying sleep regulation and is relevant to human insomnia.
Researchers at Boston University School of Medicine have developed a clinicogenomic model to test for lung cancer with increased sensitivity and specificity. The model combines gene expression and clinical risk factors, offering improved accuracy in identifying patients who would benefit from further invasive testing.
Researchers at Cedars-Sinai Medical Center have developed a novel approach to minimize radiation exposure during coronary CTA, while maintaining diagnostic image quality. The 'Low-dose Coronary CT Angiogram' technique exposes patients to full-dose x-rays for only a fraction of the heart cycle, significantly reducing radiation exposure.
A landmark study shows that corneas from older donors (up to 75 years old) are as successful for transplants after five years as those from younger donors. This finding allows for the expansion of the donor pool, addressing a shortage in the Dallas area.
A large randomized study found that angioplasty and stenting offer no benefit over medical therapy for patients with renal artery stenosis. After one year of follow-up, there were no differences in kidney function, blood pressure control, or major cardiovascular illness rates.
Phytoplankton in major oceans produce half the world's oxygen through photosynthesis, while cyanobacteria are infected by viruses that provide genetic material for photosynthesis machinery. This symbiotic relationship highlights the essential role of viruses in planetary processes and global cooling.
A study found that children with fathers who were clinically obese at a young age had higher serum alanine aminotransferase (ALT) levels, indicating a potential genetic connection between early-onset paternal obesity and increased risk of liver disease. The results persisted among non-obese children, suggesting an independent association.
Research finds extreme bacteria dominating areas with high levels of heavy metals, potentially changing pollutants into more toxic forms that can leak into reservoirs. Bacterial diversity shifts could affect the delicate ecosystem balance and impact plant and animal health.
A study by Birte Forstmann and colleagues found that two areas in the medial frontal cortex contribute to decision-making: the rostral cingulate zone (RCZ) for choosing among options, and Brodmann area 10 when making completely our own choice. The study suggests context and agency play a crucial role in decision-making.
A study found that persistent insomnia increased the risk of remaining depressed and achieving less than 50% clinical improvement. Elderly patients with major depressive disorder were more likely to remain depressed if they had persistent insomnia, regardless of treatment type.
Biotech companies are developing novel biomarkers to improve cancer diagnostic tests, potentially reducing treatment costs. Researchers at various institutions, including the Ludwig Institute for Cancer Research and Wayne State University School of Medicine, are working on early detection tools for malignancies.
A new study found that an iso-osmolar X-ray dye did not reduce the risk of kidney damage during percutaneous coronary intervention (PCI) in patients with chronic renal failure. The study compared two types of contrast medium and found no significant difference in rates of kidney injury or need for dialysis.
A new study published in Restoration Ecology reveals that damaged environments can be restored within a matter of years at virtually no cost. Spontaneous revegetation allows plants from surrounding areas to move in and take root, naturally restoring the site.
Leading cardiologists at NewYork-Presbyterian Hospital/Weill Cornell Medical Center are presenting new basic and clinical research findings on drug-eluting stents, wound closure devices, and noninvasive coronary angiography. Dr. Antonio Gotto Jr. will present data showing the ExoSeal device speeds up clotting time and reduces patient i...
Researcher Mark Paul aims to analyze complex systems like weather and climate using high-performance computing. His goal is to improve understanding of spatiotemporal chaos and its impact on energy production and consumption.
A study published in The Lancet found that recent use of abacavir and didanosine was associated with an increased rate of heart attacks, while cumulative use showed no association. The researchers suggest underlying biological mechanisms may be responsible for the increased risk.
A study by the University of Washington found that community health center-trained family physicians were more likely to work in underserved settings than their non-community health center-trained counterparts. This is significant given the projected increase in the need for family physicians, expected to reach nearly 140,000 by 2020.
Patients with breast cancer who developed anemia during chemotherapy had a significantly higher risk of local recurrence compared to those without anemia. Anemia was defined as a serum hemoglobin level below 12 g/dL during chemotherapy, and occurred in 18.2% of patients receiving CMF chemotherapy.
Geologists found that continents lose around 20% of their mass through chemical weathering involving the Earth's crust, water, and atmosphere. The lighter silicon-rich rock left behind is buoyed up by denser magnesium-rich rock beneath the Earth's crust.
A new study found that bosentan prevents experimentally induced vaso-occlusive crises in a mouse model of SCD, reducing blood vessel resistance and preventing organ damage. Bosentan may provide a new way to limit VOCs and thereby reduce mortality and morbidity in individuals with Sickle Cell Disease.
A new rapid diagnostic test can detect multidrug-resistant tuberculosis (MDR-TB) in high-burden settings like public health clinics more quickly and accurately than conventional methods. This improvement enables proper treatment to begin promptly, reducing the risk of transmission.
The study found that key codons responsible for antigenic drift were identified in the HA1 gene of H3N2 influenza viruses. The mutations occurred over eight flu seasons and affected four times of antigenic drift in Fujian, China.
Recent coral die-off events can be attributed to changes in the microbes living in and around reefs. Warmer sea temperatures allow disease-causing bacteria to thrive, weakening corals' defences. Scientists stress the need for better understanding of microbe processes to reduce reef decline.
Studies show that introducing patient navigators in safety net health systems increases colonoscopy completion rates among urban minorities, reducing no-show rates by up to 9.8%. This individual intervention approach may be particularly effective in addressing the complex barriers to colorectal cancer screening in low-income and minori...
The SEISMIC study found that injecting muscle cells into scarred areas of the heart improved patients' symptoms, including increased walking distance, but did not improve heart function or size. Researchers concluded that cell therapy is feasible and may provide symptom relief for heart failure patients.
A Hebrew U study has shown that humans can detect finer frequency differences than animals, using single neuron recordings in the auditory cortex. This suggests a unique neural representation of frequency in the human brain.
Researchers have identified a potential mechanism for treating multiple sclerosis using IFN-beta, which reduces disease in a mouse model by inducing IL-27 secretion. Meanwhile, a new study on sickle cell disease suggests that bosentan prevents organ damage by inhibiting endothelin receptor activation. Leptin signaling also plays a cruc...
A study by Genhong Cheng and colleagues has identified the mechanism by which IFN-beta reduces disease in multiple sclerosis. Administration of IL-27 alleviates symptoms in mice with MS, suggesting a key role for this molecule in the treatment's benefits.
The Gamma-ray Large Area Telescope (GLAST) satellite is nearing its May 16th launch date as it prepares to provide electrical power with its newly attached solar panels. GLAST's twin solar panels will ensure continuous operation and enable the telescope to explore extreme environments in the universe.
Researchers found that survival rates were similar between households with an AED and those without, despite underuse of AEDs. The study suggests that both AEDs and CPR are crucial in responding to sudden cardiac arrests at home.
A study integrating genetic information with breast cancer risk factors refines estimates of relapse-free survival and predicts response to chemotherapy. Gene expression signatures provide valuable insights into breast cancer heterogeneity, enabling more precise clinical outcomes.
Researchers have created a DNA nanoscale object, a regular dodecahedron, by using programmed oligonucleotides with three branches. The structure is formed through a self-assembly process and exhibits unique properties, such as being flexible under pressure.
A small study of MitraClip procedure shows significant reduction in mitral regurgitation and improvement in heart function, including reduced left ventricular enlargement. Patients experienced mild to modest mitral regurgitation after treatment, and continued to enjoy improved symptoms and daily function.
Research shows that individuals who are anxious about appearing prejudiced may avoid interactions with people of different races due to fear of social disapproval. A study by Jennifer Richeson and Sophie Trawalter found that white participants focused on neutral black faces for longer periods than white faces, suggesting a cognitive bi...
A new study published in the Journal of the American Dietetic Association found that children drinking flavored or plain milk had significantly higher intakes of essential nutrients like vitamin A, calcium, and phosphorus. The study also showed comparable or lower body mass indexes among milk drinkers compared to non-milk drinkers.
A University of British Columbia evolutionary biologist shows that adaptation to the environment speeds up speciation. By displacing eco-types from their host plants and protecting others, Nosil found color pattern alone can initiate speciation, while additional traits like detoxifying chemicals are needed for completion.
The study found that gut microbiota play a significant role in regulating weight and energy balance. Researchers suggest that manipulating the gut microbiota could be a useful strategy for treating obesity. However, more research is needed to establish the relationship between gut bacteria and obesity.
An international team of astronomers has found 10 new 'extra solar' planets using a robotic camera technique that will revolutionize scientific understanding of how planets form. The newly discovered planets have masses between half the size of Jupiter to eight times its size, including exotic worlds with extremely close orbits.
Cholera outbreaks can be predicted using satellite sensors, monitoring sea surface temperature and height. This technology offers a pre-emptive approach to addressing epidemics in developing countries affected by climate change.
A new study published in the New England Journal of Medicine found that automated external defibrillators (AEDs) placed in homes do not significantly improve survival odds for patients who experience cardiac arrests outside of hospitals. Instead, education and modification of risk factors are key to primary prevention of heart disease.
The pharmaceutical industry and academia are collaborating to increase the efficiency of drug discovery. Researchers believe that this cooperation will lead to the development of better drugs for a range of diseases at a lower cost. As a result, more people with rare or hard-to-treat diseases will have access to effective treatments.
Studies among Ophthalmology's April 2008 issue highlight the potential link between natural light exposure before birth and the development of myopia. Researchers also examine the suitability of older donor corneas for transplant surgery, finding that those from donors aged 66-75 have comparable quality to younger donors.
The Pacific Business Group on Health (PBGH) has endorsed the Patient Charter, a key step in ensuring reliable and fair healthcare decision-making. By promoting fair and accurate measurement, PBGH hopes to foster a healthcare system that rewards meaningful improvement and higher value.
Astronomers have identified the smallest known black hole, with a mass of 3.8 times that of our Sun and a diameter of just 15 miles. The black hole resides in a binary system in the Milky Way Galaxy and was measured using archival data from NASA's Rossi X-ray Timing Explorer satellite.
A six-year study found that urban areas attract lower-quality Acadian Flycatcher birds, which have reduced nesting success. These birds are more likely to fail or abandon their nests and return year after year.
A Penn State researcher is developing solar cells with titanium dioxide nanotubes and organic semiconductors for efficient and low-cost large-scale solar energy conversion. The goal is to achieve photconversion efficiencies of 6-8% and commercialize the technology.
A new patient charter aims to promote better decision-making and more patient-centered care by providing consumers with meaningful information about quality and cost. The agreement brings together consumer groups, health insurers, and physician organizations, aiming to improve the quality of care for patients in the US.
Researchers used synchrotron X-ray imaging to study opaque amber from mid-Cretaceous sites in France, discovering 356 fossil animals including wasps, flies, ants, and spiders. The team found that tiny organisms were more likely to be trapped in the resin due to their small size.
The study found that clopidogrel reloading significantly improves clinical outcomes without increasing the risk of bleeding, particularly in patients with acute coronary syndromes. Clopidogrel reloading reduces the combined risk of death, heart attack or repeat coronary procedure by nearly two-thirds in these patients.
A study by the University of Leicester found that families of children with cancer are willing to donate tissue samples for research, despite common misconceptions. The study involved 20 children and 59 parents who were interviewed about their views on consenting to tissue samples for childhood cancer research.
The NIH has awarded grants to researchers studying early brain development, social interactions, rare genetic variants, and potential environmental risk factors for autism. Researchers at Yale and Wayne State University aim to identify novel treatments using buspirone and explore the relationship between genes and physical traits.
A new study found that references to illegal drug use in rap music increased dramatically between 1979 and 1997, depicting marijuana as a positive activity. Rap music's shift towards glorifying drugs was linked to commercialization and social factors, distorting the reality of African American communities.
Researchers have refined the Y chromosome haplogroup tree using genetic variations, resolving branches and estimating time to ancestral common ancestors. The updated tree provides new interpretations on geographical origins of ancient sub-clades and sheds light on the ancestry of major haplogroups such as E, O, S, and T.
A new species of bacteria, Leptospira licerasiae, has been identified as a cause of severe leptospirosis in the Peruvian Amazon region. The pathogen was found to have novel biological features and is significantly different from other forms of the bacteria.
A new study combines clinical characteristics with genomic profiles to predict breast cancer prognosis and guide treatment. By matching the right drugs with the right patients, researchers aim to provide more personalized treatment strategies.
A team of researchers found that high-frequency vocalizations in male mice are associated with approach behaviors and positive emotions, linked to dopamine and acetylcholine receptors. The study provides a new method for screening emotion genes and developing drugs for controlling emotions and mood disorders.
A new study found that rimonabant, a weight loss medication, showed no significant effect on slowing the progression of coronary artery disease in patients with abdominal obesity. However, it did show improvements in metabolic parameters such as high-density lipoprotein cholesterol levels and triglyceride levels.
Men and women mistakenly identify friendly images as sexually interested, with men misjudging 12% and women 8.7%, according to a study by Indiana University researchers. The findings support the theory that young men struggle to interpret non-verbal cues, leading to incorrect assumptions about others' intentions.
Researchers discovered that cyanobacteria in desert soils can fix atmospheric carbon dioxide, adding nutrients to the soil. The exchange of carbon between soils and atmosphere is significant in deserts, with small changes affecting fragile ecosystems supporting millions of poor pastoral farmers.
Prebiotic sugars have been shown to reduce Salmonella infection severity in animals, improving health and reducing economic losses. The study's findings suggest a potential solution to the growing problem of antibiotic resistance and foodborne illnesses.
The journal highlights a method for ENU mutagenesis to screen the mouse genome, allowing researchers to identify genes important in specific tissues or processes. A second featured protocol provides a step-by-step process for selecting the proper method for analyzing evolutionary relationships between genes.
A study found that 91% of food ads on children's TV shows promote unhealthy foods high in fat, sugar, or sodium. In contrast, a separate study discovered that children who drink milk tend to have superior nutrient intakes compared to those who don't.
Over 400 alien species are now considered invasive in China, with many causing significant harm to the environment. The rapid growth of China's industrial infrastructure is making it easier for organisms to spread and establish themselves throughout the country.
A new study found that restrictive drug policies in Maine's Medicaid program led to a 29% increase in medication discontinuation among patients with schizophrenia. The policy, which required prior authorization for new medications, disrupted essential treatment and resulted in minimal cost savings.
Researchers at the University of Rochester have digitally reproduced music in a file nearly 1,000 times smaller than a regular MP3 file. They created a virtual clarinet player and recorded a 20-second clarinet solo encoded in less than a single kilobyte.
Researchers have isolated a new species of Leptospira, causing the disease leptospirosis, from domestic rats in the Peruvian Amazon. The discovery highlights the importance of region-specific Leptospira in diagnosis and reveals a higher incidence of leptospirosis than previously suspected.
Researchers at Michigan Technological University have developed a powerful tool to pinpoint the genes behind inherited illnesses. By analyzing data from over 1,000 people with and without type 2 diabetes, they identified 11 single nucleotide polymorphisms associated with the disease.
The ExoSeal vascular closure device significantly reduced bleeding time, enabling patients to get up and walk around far sooner than with manual compression. The study found no access site complications at 30 days, a promising result for the safety and effectiveness of the device.
Researchers are developing a global monitoring network for ocean noise to protect endangered species like the North Atlantic right whale. The project uses 3-D buoys to record sounds from whales, fish, ships, and other sources in the Stellwagen Bank National Marine Sanctuary.
A new study published in Sleep confirms that insomnia increases the risk of subsequent depression among young adults. The study, which followed 591 participants over 20 years, found that insomnia was a chronic problem that preceded depression more consistently than vice versa.
The SPOC device, developed at Stevens Institute of Technology, has received FDA 510(k) clearance for its ability to pinpoint specific muscle trigger points causing pain. This innovation has the potential to eliminate ineffective treatments and improve patient outcomes.
A new surgical technique, osteoprogenitor cellular grafting, has been used to treat steroid-induced osteonecrosis of the knee in three young patients. The procedure involves transplanting cellular material from the pelvic area into the knee, resulting in nearly normal activity and knee function with no complications.
A new genetic analysis by Yale School of Medicine researchers suggests that a genetic variant in East Asian populations may have protected residents from becoming alcoholics. The study found that this variant became widespread through natural selection in specific Hmong- and Altaic-speaking groups, hinting at an environmental factor.
A new study found that rap music has shifted from cautionary tales about the dangers of substance abuse to songs that glorify marijuana and other drugs as part of a desirable hip-hop lifestyle. The study, covering nearly two decades, showed a six-fold increase in drug mentions and dramatic jumps in positive framing.
A new study has introduced a nonlethal method to measure the body composition of small rodents using Dual-Energy X-Ray Absorbtiometry (DXA). This technology allows for accurate measurements without harming the animals, facilitating longitudinal research and increasing scientific collaboration between field and laboratory researchers.
The Cedars-Sinai Heart Institute will feature presentations on various topics related to cardiovascular health, including emerging technologies for heart valve repair and women's heart issues. Researchers will also discuss the link between prohormones and cardiovascular disease risk among post-menopausal women.