A new study reveals that women who outwardly express anger may be at increased risk of heart disease if they also have certain risk factors such as diabetes, unhealthy levels of fats in the blood, or age. The researchers found that only expressed anger, not just cynicism or hostility, was predictive of coronary artery disease in women.
A 36,000-year-old human skull from South Africa confirms the 'Out of Africa' theory of modern human origins. The fossil provides critical evidence that modern humans migrated out of sub-Saharan Africa around this time.
Researchers found that natural systems can rebound quickly after hurricanes, while human-made infrastructure and ecosystems are more vulnerable. The study also showed that storm characteristics, such as intensity and direction, play a significant role in environmental damage.
A recent study by Vanderbilt University Medical Center researchers found that prenatal cocaine exposure in rabbits causes a long-lasting displacement of dopamine receptors in certain brain cells. This effect alters their ability to function normally and may lead to subtle cognitive impairments, attention deficits, and emotional problems.
A team of Canadian scientists will gather detailed information about the northern lights using a network of Ground-Based Observatories and NASA satellites. The THEMIS mission aims to pinpoint the cause of brilliant explosions in the auroral displays.
A University of Alberta study reveals that travelers are aware of some key factors in avoiding and treating travellers' diarrhea, but lack knowledge on others. The study found that hand-washing is an effective way to ward off the sickness, but many travelers are unaware of the risks of chlorinated water and viral causes.
The Society for Cardiovascular Angiography and Interventions (SCAI) released a clinical alert on the risks of late thrombosis associated with drug-eluting stents. The alert provides practical advice for physicians to minimize this risk, including careful patient selection and use of dual anti-clotting medications.
The AAAS/EurekAlert! fellowships aim to support independent science reporting in China, promoting unbiased coverage and fostering international scientific dialogue. The recipients will cover the 2007 AAAS Annual Meeting and attend professional development sessions.
A new study by Princeton University researchers found that traditional models underestimating the value of employee stock options. The study takes into account factors such as risk aversion, job security, and vesting periods, revealing a more nuanced picture of option costs.
The UCSD initiative aims to keep middle school girls engaged in STEM fields by providing hands-on learning experiences, such as measuring air quality and analyzing solar radiation. The project also develops a multi-player online science challenge game designed specifically for girls, addressing the critical leak in the talent pipeline.
A study of over 15,000 coronary artery bypass grafting patients in New York State reveals that less experienced surgeons are more likely to perform off-pump CABG surgery on black patients. This disparity is attributed to the fact that black patients have limited access to the latest medical technologies.
A unique clinical study under way at FSU means to find out if daily prunes can help keep the doctor away by reversing bone loss in postmenopausal women. Researchers are expanding treatment options for osteoporosis, a debilitating disease affecting 10 million Americans.
Mayo Clinic researchers use advanced MRI to predict surgical success in rare sciatic notch dumbbell-shaped tumors. The 3-Tesla MRI system provides detailed images of tumor and nerve relationships, allowing for safe removal of tumors while protecting nerves.
A study led by doctors at Beth Israel Deaconess Medical Center shows that patients treated with the endoscopic Plicator procedure experience a sustained reduction in gastro esophageal reflux disease (GERD) symptoms and medication use. Over half of the patients were able to stop medication completely three years post-procedure.
A survey of 54 cancer centers found few organizations have standardized prescribing practices for oral chemotherapy, with variations in prescription generation and required information. The study highlights the importance of forging a consensus on standardized safeguards and practices for prescribing and monitoring oral chemotherapies.
A study of 46,993 patients found that hospital death rates ranged from 10% to 28%, with nursing staff levels and care map use associated with lower mortality rates. The study suggests that hospitals can reduce deaths by employing more registered nurses and implementing routine care maps or protocols.
Researchers found that a medication used to reduce toxic side effects of chemotherapy can also increase bone tumor growth in mice. Physicians are advised to closely monitor cancer patients' bone health with regular scans and prescribe medications to prevent bone loss when needed.
A recent study published in Science has found that the size of Amazon forest reserves is crucial for protecting bird species. The research, led by Gonçalo Ferraz, used a 13-year data set of over 40,000 bird captures to show that larger areas are more important than isolation in maintaining biodiversity.
Researchers have decoded the genetic makeup of T. vaginalis, a parasite causing trichomoniasis, revealing potential pathways for new treatments, diagnostics, and a vaccine strategy. The large genome comprises nearly 26,000 predicted genes, with many repetitive genes accounting for 65% of its structure.
The authors of a study estimating 654,965 Iraqi deaths between 2003 and 2006 respond to criticism, emphasizing the importance of infrastructure damage in public health. The Lancet highlights the need for long-term commitment to promoting human dignity and health in Iraq.
Researchers at Memorial Sloan-Kettering Cancer Center identified novel regulatory mechanisms of PTEN function. NEDD4-1 protein regulates PTEN stability by adding a molecular tag causing degradation. This finding provides a new therapeutic strategy, as proteasome inhibitors may selectively block degrading effects of ubiquitination.
A rapidly increasing syphilis epidemic is sweeping China, with infection rates rising from less than 0.2 cases per 100,000 people in 1993 to 6.5 cases per 100,000 in 1999. The study attributes the surge to economic reforms and globalization, as well as changes in social practices and healthcare costs.
A team of international scientists has discovered a new group of microscopic organisms in the Arctic Ocean, which have diverged from known organisms more than land plants and animals. These 'picobiliphytes' are highly fluorescent and transform light into biomass, highlighting the ocean's complex biodiversity.
A Canadian study found that bilingual individuals experience a delay in the onset of dementia symptoms by approximately four years compared to monolingual individuals. This delay was observed after considering potential influencers such as cultural differences, education, and occupation.
A large-scale study reveals that soil composition significantly influences where certain tree species grow in tropical forests. Researchers found strong associations between tree species and nutrient distributions, suggesting differences in nutrient requirements among trees may help explain coexistence.
The American Journal of Lifestyle Medicine is exploring how lifestyle choices impact heart disease. The journal focuses on recognizing and addressing the impact that lifestyle decisions have on health, emphasizing traditional therapies and lifestyle modalities to achieve superior outcomes in disease treatment.
The Institute for Genomic Research has published a draft genome sequence of Trichomonas vaginalis, the cause of trichomoniasis. The researchers identified mechanisms that help the parasite resist existing therapies and potential targets for new drugs and diagnostic techniques.
Researchers at Yale University have discovered how Campylobacter jejuni enters intestinal cells and avoids destruction. The bacteria creates its own intracellular network of vacuoles, diverting from the conventional endocytic pathway.
Researchers have discovered a potential new treatment for breast cancer by inhibiting the protease enzyme TACE, which is strongly present in aggressive forms of the disease. Inhibition of TACE blocks shedding of growth factor proteins, resulting in inhibition of cell division and reversion of malignant characteristics.
A study by Harvard researchers found that households with guns are more likely to be involved in homicides, particularly among children and women. States with higher levels of gun ownership have significantly higher homicide victimization rates, driven mainly by gun-related homicides.
A new study has identified a set of biomarkers using proteomics that could help diagnose myelodysplastic syndromes (MDS) and reduce the need for bone marrow biopsies. The findings, reported in the Proceedings of the National Academy of Sciences, used serum proteomic profiling to distinguish between MDS patients and healthy controls.
Researchers have identified a new group of algae, Picobiliphytes, found in the smallest members of photosynthetic plankton. The discovery was made using molecular techniques and has revealed a wide distribution of these previously unknown organisms.
Researchers discovered a new type of DNA parasite that can increase the spread of antibiotic-resistant bacteria. The 'stealth' plasmid produces a protein that helps it survive and thrive in bacteria, making it harder to eradicate with antibiotics.
A new study by Herman Suit and colleagues reveals great heterogeneity in radiation-associated cancer risk between species, strains, and organs. The researchers conclude that dose reductions to less than 2 Gy can lead to substantial gains in reducing secondary cancer risks.
The scientists' achievement provides new avenues for diagnosing and treating this sexually transmitted disease, affecting an estimated 170 million people worldwide. The genome contains genes and proteins not found in humans, which can help expand drug options and devise a diagnostic test.
This special issue of the Journal of Rehabilitation Research investigates innovative approaches to vision rehabilitation, including surgical excision of abnormal blood vessels and resurfacing with patient-derived retinal pigment epithelial cells. Teleretinal imaging is also explored as a tool for screening patients with diabetes for di...
WikiLeaks, an online service designed to allow anyone to post sensitive government documents without being traced, is set to launch. The site aims to protect whistle-blowers and journalists from jail sentences for emailing sensitive information; however, concerns remain about the misuse of its anonymity feature.
Researchers at Princeton University have found a specific genetic trigger that can deactivate the HIV virus, potentially leading to new treatments. The trigger, involving an enzyme called SirT1, can keep the virus in its dormant phase, reducing its ability to replicate.
Scientists analyzed rafflesia's genome to determine its closest relatives are in the Euphorbiaceae family, with blossoms just a few millimeters in diameter. The plant's massive increase in flower size over millions of years is one of the most significant among living organisms.
A new study reveals that modern humans first arrived in Europe around 45,000 years ago, with evidence of stone, bone and ivory tools found in Russia. The discovery includes a carved piece of mammoth ivory believed to be the oldest figurative art ever discovered.
Cells use a new signaling pathway to alter their adhesive properties, which could lead to a better understanding of tissue development and immune responses. This discovery may also provide new therapeutic targets for diseases such as cancer and inflammatory conditions.
A study found that middle-aged men with shorter telomeres were more likely to develop coronary heart disease. Statin treatment reduced the risk of heart disease in these individuals, suggesting a potential biomarker for personalized medicine.
A syphilis epidemic is sweeping China, driven by the re-emergence of sex work and changing sexual practices. The country's national surveillance system has reported a significant increase in syphilis cases, with congenital syphilis rates rising by 71% between 1991 and 2005.
Researchers reevaluate human migration, proposing a new timeline for the spread of modern humans out of Africa. According to studies involving fossil analysis and genetic research, this migration likely took place between 40,000 and 60,000 years ago.
Researchers found that regulatory T cells (Treg) are impaired in the absence of WASp, leading to systemic autoimmune disease. However, a spontaneous revertant mutation in a patient's Treg cells improved their function, suggesting that a defect in Treg function contributes to the autoimmunity associated with WASp deficiency.
Researchers discover a mutant gene that affects the body's natural wake-up time, shedding light on the genetic basis of sleep in humans. The study provides new insights into the circadian clock's regulation and may lead to therapies for conditions like jet lag and shift work sleep disorder.
The discovery suggests that modern humans migrated out of Africa and occupied parts of eastern Europe as early as 45,000 years ago. The findings are based on the analysis of stone tools, beadwork, and other artifacts found at the Kostenki site in Russia.
Researchers found that WASP protein is crucial for regulatory T cells to regulate autoimmunity and prevent tissue damage. In humans, a population of T cells known as regulatory T cells (Treg) are impaired without WASp, leading to autoimmune disease.
Research suggests that whole school approaches are more effective in reducing bullying than traditional classroom methods. Bullying affects up to 10% of children, leading to physical, social, and emotional problems.
Scientists have uncovered the molecular structure of cartilage's collagen fibrils, a key factor in osteoarthritis. The discovery could lead to treatments that prevent fibril deterioration and ultimately alleviate joint pain.
A recent USGS study compared nine different formulations and confirmed that most still have toxic additives, but some de-icers may be safer for the environment than those used in the 1990s.
Researchers at Penn School of Medicine have shown a 51% reduction in low-density lipoprotein (LDL) cholesterol levels in patients with homozygous familial hypercholesterolemia. The new therapy, which targets the microsomal triglyceride transfer protein, also decreased total cholesterol and triglyceride levels.
Researchers found DNA methylation in normal-appearing areas of the breast near tumors, suggesting a potential marker for early cancer detection. Abnormal methylation levels were also identified in three other genes, which may help estimate a woman's risk of cancer recurrence.
Research reveals that PMR1 enzyme forms temporary shelters in stressed cells to protect mRNA, allowing protein production to resume when stress ends. This protective mechanism may help cancer cells evade cancer therapies.
A newly identified wheat gene produces proteins that bind to the stomach lining of Hessian fly larvae, causing them to starve. The gene's role in creating resistance to Hessian flies was a surprise to researchers, who found that it triggers a localized defense response that reduces energy costs for the plant.
A study found that possessing power impairs an individual's ability to adjust to another person's perspective and interpret emotions. Researchers discovered that individuals with high power levels are more likely to prioritize their own viewpoints, leading to decreased empathy.
A new study suggests that delaying the use of nevirapine-containing antiretroviral therapy (ART) for at least six months after labor can improve treatment outcomes among HIV-infected women. The study found that women who started ART within six months of giving birth had a higher rate of treatment failure compared to those who delayed t...
A new study from Michigan Medicine finds significant variation in Medicare Part D prescription drug plan costs across states, even with lowest-cost plans. Seniors may face costs differing by thousands of dollars for the same medications, and within a state, the difference can be $10,000 or more.
The number of US high school students taking physics has increased to a record high, with more than 30% of seniors enrolling in physics classes. Physics bachelor's degree recipients are also on the rise, with a 31% increase since 2000 and a significantly higher likelihood of pursuing advanced degrees.
A national study by Duke University researchers found that people with psychiatric disabilities are less likely to receive monetary awards or job-related benefits in court cases. They also report feeling less treated fairly and receiving less respect during the legal process compared to those with physical disabilities.