Long-term warfarin therapy increases incidence of osteoporotic fractures by 25% in elderly patients, with men at higher risk. Regular exercise and adequate calcium intake can help maintain bone strength.
Researchers at Washington University School of Medicine in St. Louis have identified EF1A-1 as a critical step in the pathway leading to high cellular fat and cell death. The protein plays a role in protein synthesis and cytoskeleton maintenance, and its presence dictates sensitivity to palmitate-induced cell death.
Researchers found that bexarotene reduced tumor burden by almost 50% and inhibited malignant tumor progression by about 50% in mice. The study suggests bexarotene is a potentially viable lung cancer prevention candidate.
Research found that calorie-restricted individuals had hearts with improved elasticity and function, similar to those of younger people. Their low levels of inflammation may have played a key role in preventing primary aging.
A study published in the American Journal of Human Genetics has identified a genetic region on chromosome 10 strongly associated with late-onset Alzheimer's disease. The researchers scanned over 1,400 single-nucleotide polymorphisms and found six genes within this region that may be involved in the development of the disease.
Tumor cells that border normal tissue exhibit distinct behavior, losing surface proteins and gaining the ability to dissolve matrix surrounding cells. This change signals activation of proteins allowing tumor cells to migrate, posing a risk for metastasis. The discovery highlights the importance of tumor environment in cancer progression.
A study by Washington University researchers found a single base variation in the TAS2R16 receptor gene that increases the risk of alcohol dependence, with higher incidence in African Americans and lower sensitivity to bitter tastes among those with this variant.
A study of primary-care patients found that genetic variations can affect the metabolism of common medications, potentially leading to adverse reactions. The researchers suggest that applying pharmacogenetics in primary-care practices could reduce costs by minimizing unnecessary prescriptions and hospital treatments.
A study found that veterans with CMI report poorer quality of life and utilize more healthcare services. The condition is also linked to metabolic syndrome, which doubles the risk of coronary heart disease, diabetes, and cirrhosis.
Researchers discovered that light-sensing retinal ganglion cells are active and functioning at birth, surprising the developmental timeline of the mouse retina. The cells react to light in two ways, sending messages to parts of the brain controlling circadian rhythms and visual development.
Researchers found that increased brain cell activity drives up levels of amyloid beta, a key ingredient in Alzheimer's plaques. Corresponding drops in amyloid beta levels occurred when brain cells' ability to send messages was dampened or blocked completely.
A study by Washington University psychologist Teresa L. Deshields found that most breast cancer survivors adjust well to survivorship within two weeks, with depressive symptoms dropping significantly after treatment. The study suggests that oncologists can reassure patients that their quality of life will improve quickly.
Researchers used brain scans to predict volunteer performance in a motion discrimination task. They found that brain signals related to spatial attention predicted performance, suggesting the brain uses internal signals to influence perception.
The project aims to sequence the maize genome to understand more about plant genomes and evolve cereal genomes. Scientists will sequence a maize cultivar called B73, with the goal of identifying new genes responsible for important traits like yield and drought tolerance.
A combination of brain scanning with a new imaging agent and cerebrospinal fluid analysis has shown promise in predicting Alzheimer's disease. Researchers found low CSF levels of amyloid beta 42 in patients with cognitive impairments, but also detected positive results in cognitively normal subjects.
A new therapeutic target has been identified in the inherited brain tumor disorder neurofibromatosis 1 (NF1). Fumagillin, an established drug, has been found to suppress the activity of MetAP2, which is abnormally high in NF1-associated brain tumors. This discovery may lead to new treatments for patients with NF1.
Researchers find mouse songs have syllabic diversity and temporal regularity, similar to birdsong, but with less complexity. The study adds mice to the list of creatures that sing during courtship, paving the way for future investigation into mouse vocalizations in wild populations.
Scientists found that P-glycoprotein accelerates clearance of amyloid beta from the brain, potentially reducing Alzheimer's risk. The study suggests that pharmaceuticals affecting Pgp activity levels may also influence Alzheimer's risk.
Researchers have identified a rare genetic change on the X chromosome that causes XLHPT, a condition affecting male blood calcium levels and parathyroid hormone secretion. The study's findings may lead to new treatments for osteoporosis, a bone-weakening condition in the elderly.
Researchers found that brain regions beyond the injury site play a critical role in understanding behavioral deficits and assessing options for acceleration of recovery from stroke-related spatial neglect. Functional magnetic resonance imaging scans revealed activity changes in distant brain areas correlated with impairment severity.
Researchers have identified a protein called CCL5 that protects macrophages from premature death during respiratory viral infections, allowing them to continue fighting the infection. This discovery may lead to new methods to hasten recovery and reduce symptoms of influenza and the common cold.
The School of Medicine will research and apply nanotechnology for the diagnosis and treatment of cancer. The nanotechnology offers several advantages, including precise targeting of tumor cells and drug therapies.
Researchers have developed a method to enhance the responsiveness of Stat1 protein, allowing for more efficient interferon signaling. This could lead to improved therapeutic benefits and reduced side effects for patients with hepatitis C, multiple sclerosis, and other conditions.
Researchers found that the antibody prevents the virus from rearranging its protein envelope after entering host cells, blocking infection. The study also uncovered a theory called antibody-dependent enhancement, which may help explain why some antibodies are ineffective against certain viruses.
A recent study found that variations in the beta-2 gene significantly determine length of survival for acute coronary syndrome patients on beta-blockers. High-risk groups had a five times higher risk of death, while low-risk groups had a six percent mortality rate after three years.
The PALS (Population-Average, Landmark-, and Surface-based) atlas provides a comprehensive map of the human cerebral cortex, combining data from multiple individuals to improve accuracy. The atlas has already helped scientists understand how genetic disorders affect brain structure and function.
The chimpanzee genome's remarkable closeness to the human genome will make it a powerful tool for comparative genetics. The analysis reveals genetic changes that prompted the chimp-human species divergence and provides insight into how evolution has continued since then.
Researchers found that increasing Sirt1 in pancreatic Beta cells improves insulin secretion and glucose metabolism in mice. This study suggests that therapies targeting Sirt1 could provide new treatments for type 2 diabetes.
Researchers found that Bcl-xL, a protein that prevents cell death, can encourage tumor growth in mice. Higher levels of Bcl-xL were linked to increased tumor development and tissue injury in studies on lung and liver damage.
Scientists created a luciferase-based monitoring system using the firefly protein to track IKK activity in tumor cells and inflamed liver cells. This allows for real-time monitoring of drug effects and fine-tuning of dosages, saving time and cost compared to traditional methods.
Scientists at WashU Medicine found that natural killer cells become more capable of attacking invaders after encountering a specific molecule on the surface of other cells. This process, known as licensing, has important implications for understanding persistent viral infections and bone marrow transplants.
A study of depressed heart patients found that those with low heart rate variability were nearly three times more likely to die after a heart attack. Researchers hope that treating depression and correcting heart rate variability may offer improved survival rates for these patients.
Researchers discovered elevated GABA levels in aggressive neuroendocrine tumors, which may indicate poor prognosis. The study suggests a unique tumor-associated pattern that could provide new ways to diagnose these cancers earlier and implement more effective treatments.
Researchers identified genetic regions on chromosomes 6, 7, and 19 associated with prediabetes in response to aerobic exercise. The study found that individuals differ in their blood sugar equilibrium after exercise, allowing for unique analysis of insulin sensitivity and glucose metabolism.
Researchers found that pomegranate juice reduced brain tissue loss by 60% in mice whose mothers drank water mixed with pomegranate concentrate. The study suggests that pomegranate juice may provide neuroprotective effects and potentially reduce the impacts of hypoxic ischemic brain injury.
Researchers at Washington University School of Medicine found that cathepsin G regulates neutrophil secretion of inflammatory chemicals, leading to tissue and cartilage damage in joints. Inhibiting this enzyme has attractive potential as a therapeutic target for treating arthritis.
Researchers have discovered that specific proteins in the fruit fly eye play a crucial role in organ development, including kidney formation. These proteins, Roughest and Hibris, are also found in human kidneys and are essential for proper filtration and filtering of unwanted molecules.
Research reveals a significant increase in chronic fatigue syndrome and fibromyalgia among veterans of the first Gulf War compared to non-deployed peers. The study, conducted at 16 VA medical centers, found that deployed veterans were 40 times more likely to develop chronic fatigue.
Researchers at Washington University School of Medicine found that inflammation is the cause of postoperative atrial fibrillation, a rapid and irregular twitching of the upper chambers of the heart. Anti-inflammatory therapy may prevent or lessen this condition by increasing uniformity of electrical impulses in the atria.
Researchers found that GM-CSF treatment alleviated symptoms of Crohn's disease and improved patients' quality of life, with significantly less inflammation in the mucosal linings. The study showed a 40% remission rate for those receiving the drug compared to 19% of placebo recipients.
A study published in Nature suggests that mitochondrial problems in blood vessel walls contribute to atherosclerosis. Researchers found that mice overproducing uncoupling protein-1 developed high blood pressure and atherosclerosis, despite having normal cholesterol levels.
A newly discovered 'branding' process in immune system cells may help the immune system determine which infections to fight, potentially leading to new vaccine strategies. The discovery also sheds light on autoimmune conditions such as rheumatoid arthritis and type 1 diabetes.
Researchers found that transplanting pig pancreatic primordia into diabetic rats at precisely 28 days after fertilization cures their diabetes. Transplantation at this stage made the tissues invisible to the rat's immune system, leading to permanent cure without immune suppression.
Researchers found that disabling Foxo3a gene prevents the development of arthritis-like disorder by inducing neutrophil apoptosis. This discovery may lead to new treatment options for immune dysfunction-related arthritic conditions.
Genetically engineered mice with a missing enzyme in their livers developed fatty liver disease when placed on a zero-fat diet. The study found that consuming new fat, which is produced in the liver or consumed in food, helps regulate fat burning and prevents liver damage.
Scientists have discovered a humanized monoclonal antibody that can boost survival rates of infected mice to 90% or higher. The antibody, produced by Macrogenics Inc., has potential utility against other infectious diseases and could help develop new treatments for related viruses like dengue fever.
Researchers have developed nanoparticles that can detect tumors using standard MRI equipment, allowing for earlier diagnosis. The particles can also deliver cancer-fighting drugs directly to malignant tumors, promising more effective treatment options.
A breakthrough in gene therapy has successfully corrected hemophilia in laboratory animals by producing a normal level of clotting factor activity and preventing bleeding incidents.
Researchers found that palmitate, a saturated fatty acid, can attach to proteins regulating bioelectricity in cells. This attachment affects the transmission of electrical impulses in nerve and heart cells, with potential health implications.
Researchers have completed DNA sequences of human chromosomes 2 and 4, revealing large gene deserts and remnants of a chimpanzee chromosome merger. The study highlights the importance of these regions in regulating genes and has implications for understanding human genetic variation and disease.