A new Alzheimer's disease treatment, metrifonate, has been shown to improve behavioral disturbances and mental performance in patients with mild-to-moderate dementia. The study found that metrifonate slowed the mental decline associated with Alzheimer's disease over a six-month period.
Researchers have found that Sulfolobus acidocaldarius exhibits a very high rate of genetic recombination, with 95% of mutations producing recombinants. This suggests an alternative mechanism of DNA repair beyond classical recombination, which may be driven by the microbe's exposure to oxidative stress.
Three experts recommend establishing a national office of drug safety to track and reduce prescription drug-related injuries, which could be the fourth-leading cause of death in the US. The proposed office should develop reliable estimates of deaths and serious injuries from prescription drugs.
A new chemistry analysis reveals the optimal time for harvesting pungent peppers, with Piquin peppers requiring 40 days and De árbol and Habañero peppers needing 50 days. The hot flavor of chile peppers is caused by capsaicinoids, which degrade over time due to naturally-occurring compounds called peroxidases.
Astronomers used an instrument to collect light from 1000 objects, discovering seven compact blue galaxies beyond 2 billion light years away
A bacterial pesticide, Burkholderia cepacia, has raised concerns over its potential to cause deadly lung infections in people with cystic fibrosis. Experts are calling for a ban on its use in pest control until it is proven safe.
A new test measuring free PSA can accurately identify men at risk of prostate cancer, allowing for targeted biopsies and reducing unnecessary procedures. The test aims to cut the cost of prostate screening dramatically while sparing men from potential complications like infection and bleeding.
The Bluff site, a Pueblo great house in the Four Corners region, shows signs of occupation well after the Chaco culture collapsed. The discovery suggests possible religious revival and potential movement of people from Chaco Canyon to the Aztec site.
A new UC San Francisco study found that hospitalists may reduce hospital stays and costs without compromising quality or teaching. Patients managed by hospitalists stayed an average of 4.3 days at $7,007 compared to 4.9 days at $7,777 under traditional care.
A new version of the PSA test detects 95% of prostate cancers and helps distinguish between cancer and benign conditions. The study reduces unnecessary biopsies and provides personalized risk assessments for men with borderline results.
A new UCSF study investigates whether physician-run managed care groups improve outcomes for physicians and patients. The study found that these groups face similar pressures to traditional managed care organizations, with a focus on primary care physician recruitment and board certification.
A large randomized phase III study confirmed the efficacy of paclitaxel plus carboplatin in treating non-small cell lung cancer. Patients who received paclitaxel/carboplatin experienced a greater response rate and improvement in quality of life compared to cisplatin/etoposide.
A new study by UNC-CH researchers found that adolescent obesity rates among second- and third-generation immigrants to the US have increased significantly. The study, based on a nationally representative sample of 13,783 adolescents, suggests that less physical activity and a higher-fat diet are likely responsible for this trend.
Scientists have discovered that antibodies can recognize the orientation of amino acids, allowing them to bind only with specific handedness. This ability may be key to developing new, effective pharmaceuticals by identifying and sorting out left- and right-handed molecules.
A new method for clustering data on computers has been developed by Prof. Eytan Domany, enabling the analysis of vast amounts of information without prior knowledge of its structure or categories. The algorithm mimics human intuition and can automatically identify clusters in various types of data.
Scientists have discovered a novel form of vancomycin that may be effective against resistant bacteria. The findings suggest a new way for the drug to bind to bacteria, opening an avenue for developing next-generation antibiotics.
In a Phase II study combining ONYX-015 with standard chemotherapy, nine out of ten patients experienced tumor regressions greater than 50 percent, including two complete responses. Thirty percent of patients treated with ONYX-015 alone showed significant tumor regression.
UCSF researchers report that the osteoporosis prevention drug raloxifene drastically reduces the risk of breast cancer in postmenopausal women without increasing the risk of endometrial or uterine cancer. The study found a 70 percent reduction in breast cancer cases among participants taking raloxifene compared to those receiving placebo.
Seismologists capture detailed images of deep underground processes at mid-ocean ridges, revealing melting rock flows up in a broad zone rather than a narrow plume. This new data represents a major step forward in understanding Earth's crust formation and volcanic activity.
Researchers demonstrate intratumoral delivery of the E1A gene, downregulating HER-2/neu expression and tumor responses. The study shows promise for using E1A gene therapy to treat a broad range of cancers.
Researchers have identified genes that enable plants to produce epoxy and acetylenic fatty acids, key components in the production of polymers and specialty chemicals. This breakthrough could lead to the development of new, high-value products from plant-based raw materials.
Researchers found that bone marrow transplant significantly improves disease-free survival for children with high-risk neuroblastoma. Additionally, follow-up therapy with high doses of retinoic acid shows promising results, with a three-year event-free survival rate of 55% compared to 16% for those treated with consolidation chemothera...
Researchers found that at high temperatures, a phenomenon called the surface barrier slows down columns of dynamic magnetic fields, allowing current to flow along the edge. This discovery throws new light on superconductor properties and may lead to advanced materials with improved properties.
Researchers at Northwestern University Medical School have developed a rapid diagnostic test to detect vancomycin-resistant enterococci (VRE), a growing threat to hospital patients. The new method, called hot-start polymerase chain reaction (PCR), detects VRE in 13 of 15 specimens, allowing for early isolation and treatment.
A recent study found that over 40% of UK textile firms have discovered infringing fabric designs in the past three years, with one-third of firms finding illegal designs overseas. Designers often lack knowledge about copyright law and are reluctant to take rivals to court due to complexity and scope for interpretation.
A mutated tumor suppressor gene has been identified as the cause of familial juvenile polyposis, a disorder affecting about 1 in 100,000 people. The discovery may provide insights into colorectal cancer diagnosis and treatment.
A phase III clinical trial suggests that suramin offers substantial pain reduction and moderate delay in disease progression for patients with advanced prostate cancer. The study involved 458 patients, who experienced significant pain reduction and a longer period of time compared to those receiving only hydrocortisone and a placebo.
The discovery of Majungatholus atopus sheds new light on the dinosaur family Abelisauridae, which has been found only in South America and India. The fossil's unique structure suggests it was a top predator on Madagascar, feeding on sauropod dinosaurs.
A new study found that discharged psychiatric patients who did not abuse alcohol and drugs had the same rate of violence as their neighbors in the community. Substance abuse raised the risk of violence among both groups, but was more common among discharged patients.
Researchers from Duke University and the University of Pennsylvania have gained crystal-clear insight into ribonuclease P, an enzyme that forms a crucial partnership with RNA to construct proteins. The findings suggest an ancient remnant of early life's evolution when RNA molecules were enzymatic workhorses.
Researchers at the Max Planck Institute for Biophysical Chemistry generated mice with no functional Pax8 protein, which develop hypothyroidism due to a defect in thyroid hormone production. The study suggests that Pax8 plays a crucial role in forming thyroxin-producing cells of the thyroid gland.
Researchers create ultra-sensitive assay to detect DNA damage caused by ionizing radiation and cancer-causing chemicals, showing potential for early detection and treatment of genetic injuries. The new technique is 10,000 to 100,000 times more sensitive than existing methods.
Despite initial evidence of HIV-1 infection, researchers found no conclusive cases of transient infection among exposed infants. The study suggests laboratory contamination or mislabeling as the cause of false positive test results.
A study suggests that conjugated linoleic acid (CLA), a fatty acid in red meats and cheeses, can prevent the onset of diabetes in laboratory animals. CLA appears to work as well as new diabetes-fighting drugs, thiazolidinediones.
Scientists have isolated a novel gene involved in phosphorylating starch in potato tubers. Inhibiting its expression leads to reduced phosphate content and altered starch properties, resulting in improved degradation and reduced cold-induced sweetening. This discovery has significant implications for plant biotechnology.
A new nasal spray vaccine, FluMist(TM), has shown promising results in preventing the flu and flu-related ear infections in children. The vaccine provided 93% protection against the flu and 98% protection against otitis media, a common complication of the flu.
Scientists at Boston University report a new model of ventilator assisted lung function that incorporates 'noise' to improve gas exchange in patients with lung injury. The approach may also minimize additional trauma by enhancing the avalanche-like opening of airways and alveoli during inhalation.
A team of researchers has discovered a nearly complete skull of the large predatory dinosaur Majungatholus, which lived during the Late Cretaceous period. The fossil, found on the island of Madagascar, sheds light on the habits and characteristics of this enigmatic theropod dinosaur.
A Duke University geological study proposes that earthquakes triggered the massive and puzzling swarms of icebergs believed to have separated from the Canadian ice sheet. The researchers hypothesize that periodic crustal failure along the eastern Canadian coast, caused by the growing weight of the ice sheet, led to the quakes, which th...
A small-scale study suggests that hyperbaric oxygen therapy can hasten recovery from stroke and save millions of dollars annually in healthcare costs. The treatment, which combines hyperbaric oxygen with diagnostic testing, may give patients an extra hour to receive treatment, potentially extending the window for intervention.
A new study by Cornell University finds that volunteering enhances psychological well-being in retirement, particularly for men, urbanites, and those with less income. Volunteering also gives individuals a sense of mastery over their lives, promoting social relationships and self-identity.
Dr. David Stump's research reveals a significant impact on patients' lives, with long-term effects on motor skills, hand-eye coordination, and daily functioning. The study highlights the importance of early detection and addressing post-operative deficits to prevent decline in brain function.
Researchers have utilized viruses as tools for material science and drug delivery, using their protein coats to admit and expel organic and inorganic material. The potential implications include creating unlimited numbers of homogeneously sized crystals for semiconductor production and targeted cancer therapies.
A team of physicians and scientists successfully demonstrated the long-term function of transplanted human liver cells in a patient with Crigler-Najjar Syndrome Type I. The procedure reduced the patient's daily phototherapy needs from 12 hours to six hours, significantly improving her quality of life.
Treating people with epilepsy or seizures who are in remote locations like space, underwater or extended airline flights may be possible through telemedicine. Sleep deprivation and weightlessness can provoke seizures during travel.
Researchers have made significant strides in reducing post-surgical brain deficits by modifying surgical technique and using ultrasound monitors to detect emboli. The team has cut the number of patients experiencing confusion, memory loss, and personality changes after coronary artery bypass surgery.
Biosphere 2, a closed system that supported eight scientists for two years, offers valuable lessons for long-term space missions. The system's life support and agricultural systems will be crucial for future space travel.
Research suggests that hyperbaric oxygen therapy could save millions in treating victims of stroke, epilepsy, and spinal cord injury. The therapy increases blood oxygen levels and may prevent reperfusion injuries by modulating the immune system.
Researchers have created transgenic mice that can see over a range of about 360 nanometers, more than humans or old world primates. The mice will be used to investigate scientific questions related to the nervous system's adaptability and how neurons connect to new information.
Researchers at Johns Hopkins have discovered that HIV depends on the moving parts of a cell's surface to enter the cell. The findings suggest that clustering transmits signals to the cell that could be important for HIV replication.
Researchers at Jefferson University have identified a crucial mechanism of the tumor-suppressor protein Fhit, which plays a significant role in preventing cancer development. By understanding how Fhit works, scientists may be able to find ways to interfere with cancer growth and potentially develop new treatments.
Dr. Philip James reports that high-pressure chambers can increase oxygen levels in damaged spinal nerves, potentially preventing paralysis. The treatment has been used on divers with decompression sickness and shows promise for spinal cord injuries.
The Aerospace Medical Association has issued medical guidelines for air travel to help doctors advise patients with illnesses. These guidelines provide recommendations for patients with conditions such as pulmonary disease, asthma, and emphysema, emphasizing the importance of stable health before traveling.
A new technique developed by Dr. John Absher may help prevent strokes among Americans with high blood pressure. By adapting a space shuttle technique that simulates zero gravity, doctors can determine the risk of stroke for patients taking medication to lower their blood pressure.
A recent study revealed that 11% of the general population has silent cerebral infarcts, with current cigarette smoking and hypertension being significant risk factors. The findings suggest that these lesions may be associated with a poor prognosis in the general population.
A new study by researchers at UCSF AIDS Research Institute found that a short-course of antiviral drug therapy and high prevalence of HIV-positive women of child-bearing age can produce a cost-effective outcome. If drug prices are lowered to 25% of the industrialized world cost, treatment for 100 women could cost around $1,014.
A newly unearthed version of the Laozi (Tao-te ching), dating back at least 2,350 years, is being studied by 30 international scholars. The Guodian Laozi sheds new light on the debate about its authorship and the relationship between Daoism and Confucianism.
Emerging technologies in food processing, such as high pressure and biotechnology, promise to enhance food safety and nutrition. These methods can preserve nutrients better than traditional heat pasteurization, while also providing new antimicrobial systems for extended shelf-life.
Researchers developed a method to create ultrathin films of polyelectrolytes with a layered architecture, which retains two-dimensional conformations after hydrolysis. This allows for the creation of composite structures with tailored surface properties and chemical reactivity.
Research on aging presents a surprising finding: mortality rates decrease with age in various species. Studies have shown that death rates level off at around 105 years old for humans and even decline after age 110. This trend is observed across different species, including fruit flies, worms, and yeast.