A study by University of Pennsylvania researchers discovered that deleting a gene essential for DNA repair leads to premature aging and loss of stem cells in adult mice. This accelerated aging process results from the exhaustion of tissue renewal mechanisms.
A study by Deborah Carr and Dmitry Khodyakov found that education, religious beliefs, and personal experiences with loss are key factors in seniors' decisions to appoint a healthcare proxy. Most people choose a spouse or child as their proxy, but there are also idiosyncratic responses among those outside traditional relationships.
Researchers are conducting phase I trials comparing slow-freezing techniques to a rapid method of cryopreservation that transforms tissues into glass-like structures. The goal is to make human eggs, ovarian tissue, blood vessels, and whole organs available when needed.
A study by Penn State researchers found that nearly all Caribbean land-breeding frog species, including coqui frogs, originated from a single ancient species that rafted on a sea voyage from South America. The discovery challenges previous theories of their arrival and reveals the surprising common ancestry of these species.
Recent research confirms statins are well-tolerated and effective in reducing cardiovascular disease risk. The review highlights their impact on LDL cholesterol levels and safety profile, including rare but potential muscle-related side effects.
Researchers at the University of Missouri-Columbia are designing a protective wall to shield bridges from terrorist attacks, focusing on materials like concrete and steel. The goal is to create a barrier that can withstand explosions and resulting debris, with easy installation and removal capabilities.
Researchers found that talc stimulates healthy cells to produce endostatin, a hormone that inhibits tumor growth and kills tumor cells. The study reveals talcum powder's potential as a therapeutic agent for metastatic lung cancer, offering new hope for patients with incurable disease.
A team of researchers successfully linked surgeons to robots via a 4,000-mile satellite connection, improving the quality of minimally invasive surgery. The study found that virtual reality prediction would greatly aid this type of surgery, paving the way for new efficient healthcare services.
A new Carnegie Mellon University study found that people are more likely to buy from online merchants with good privacy policies, which were identified by a search engine called Privacy Finder. Participants were willing to pay about 60 cents extra on a $15 purchase when buying from a site with a privacy policy they liked.
Research at University of California - Irvine reveals that dirty snow can explain up to 19% of the Arctic warming attributed to greenhouse gases. Soot-infused snow absorbs sunlight and causes heating.
The QUT microgravity tower will enable scientists to study diverse phenomena in reduced-gravity environments, including nanomaterials and combustion. This facility will be one of only a few in the world and provide an attractive alternative to costly space testing methods.
Researchers at Massachusetts General Hospital have discovered a cellular chain of events linking stroke and head injury to Alzheimer's disease. The study reveals how brain cell death triggers the production of amyloid-beta protein, a key component of senile plaques.
Adults with obstructive sleep apnea benefit significantly from prolonged CPAP use, with 7.5 hours shown to maximize daytime alertness and functioning. Most patients should use CPAP for at least 7.5 hours each night to realize the greatest possible benefits of therapy.
A study has identified a common gene, GAB2, that appears to increase a person's risk for developing Alzheimer's disease. The researchers found that the healthy form of the GAB2 gene may protect brain cells from developing tangles, a hallmark of Alzheimer's disease.
A study found that metabolic syndrome is associated with compromised heart structure and function, including symptomatic heart failure. The association was independent of coronary heart disease risk as predicted by the Framingham risk score for diastolic dysfunction, but not systolic dysfunction.
Researchers found that corporate giving can actually harm public perception when companies with bad reputations donate to charitable causes. On the other hand, companies with good reputations are viewed positively by the public when they give to charity.
Amnesty International's Eyes on Darfur project uses satellite cameras to track possible targets of attack and prevent new atrocities in vulnerable villages. The organization invites the public to help protect 12 villages through its website, putting Sudanese President al-Bashir on notice that areas are being watched around the clock.
Researchers have discovered that stroke or traumatic brain injury can trigger Alzheimer's disease by enhancing the formation of brain-clogging amyloid plaques. Key findings include the role of caspase-mediated depletion of GGA3 in stabilizing BACE and increasing amyloid protein production.
A new bacterium, Bartonella rochalimae, has been discovered and isolated from a patient who suffered symptoms similar to malaria or typhoid fever. The bacterium is genetically similar to one spread by body lice in World War I trenches, causing trench fever.
SNM presented special recognition awards to 7 lawmakers who support the profession. The organization highlighted their dedication to patient care and safety through initiatives like the CARE Act. SNM's annual meeting will be held June 2-6 at the Washington Convention Center.
Researchers at Yale University have identified a new regulatory target for the Fragile X mental retardation protein (FMRP), which may lead to new treatments for Fragile X syndrome. The study also found implications for autism, as both conditions share common physiological pathways.
Researchers suggest targeting beta1-integrin to treat cancer by reducing tumour cell proliferation and inducing cellular senescence, potentially preventing metastases. Blocking this protein function in transgenic mice with pancreatic insulinomas resulted in tumour cells becoming senescent and unable to form new tumours.
Researchers at Georgetown University Medical Center have constructed the largest synthetic gene ever built, which contributes to malaria drug resistance. The PfMDR1 gene, when expressed in yeast, produces large quantities of its protein, allowing for molecular understanding of how Plasmodium falciparum becomes resistant to drugs.
Process Systems Enterprise, a global operation that provides mathematical modelling software, has won the MacRobert Award for demonstrating engineering excellence and innovation. The technology helps process industry companies to maximize product quality and minimize production cost.
Researchers at Rutgers University have discovered a new approach to contain genes in genetically modified (GM) crops by implanting them into plastids, minimizing the risk of escape. This innovation has the potential to alleviate concerns about 'foreign genes' contaminating wild species and ecosystems.
Researchers at Cold Spring Harbor Laboratory identified a family of micro RNAs (miRNAs) that enable the p53 pathway to fight cancer growth. By comparing levels of miRNAs in cells with various pre-cancerous genetic lesions, they found a connection between changes in the p53 pathway and the loss of specific miRNAs, such as miR-34.
The EASE Trial investigates an experimental procedure called airway bypass designed to create pathways in the lung for trapped air to escape, potentially relieving shortness of breath and other symptoms. The study aims to improve lung function and quality of life for emphysema patients.
A new experimental drug blocks a protein linked to metabolic diseases, preventing and treating type 2 diabetes and atherosclerosis in genetically predisposed mice. The compound's effectiveness suggests it may be protective against other metabolic disorders, including asthma.
Researchers found mutations in integrin alpha 7 associated with cancer progression and metastasis in various cancer cell lines. Increasing normal integrin alpha 7 levels inhibited tumor growth and migration, indicating its potent tumor suppressor activity.
A new online effort by Amnesty International USA uses high-resolution satellite images to track the status of settlements in the war-torn Darfur region. The project provides evidence of destroyed villages and allows users to visually track the status of settlements considered possible targets of attack.
Scientists have discovered a mechanism that can organize the activity of cells involved in short-term recall known as working memory. The study found that inhibitory neurons play a key role in coordinating this process, which could lead to improved treatment options for individuals with schizophrenia.
Researchers found that blood-forming stem cells in mice accumulate DNA damage with age, leading to reduced ability to produce new blood and immune system cells. This finding may explain the origin of blood cancer and immune dysfunctions that occur as people age.
Researchers at UCLA have successfully manipulated nanomaterials to create a new drug-delivery system for anticancer drugs. The system uses silica-based nanoparticles to deliver water-insoluble drugs into human cancer cells, increasing their effectiveness and reducing toxicity.
Scientists at Rensselaer Polytechnic Institute have developed a new method to compact carbon nanotubes into dense bundles, which could outperform copper as an electrical conductor. The process boosts the density of these bundles by five to 25 times and is expected to play a critical role in the development of 3-D computer chips.
A special publication from the University of Rochester Medical Center aims to improve understanding and management of cancer-related fatigue. Studies show that exercise and support groups are effective in helping people cope with this challenging side effect.
Researchers are developing an interactive simulation of a wildfire spreading through Volusia County to study how residents make decisions about prescribed burns and insurance. The study aims to demonstrate that virtual reality can be an effective public policy tool in encouraging residents to invest in prevention.
Researchers used CT scans to reveal a close-to-the-shoulder artery lesion in the Iceman, confirming his cause of death as a result of an arrowhead injury. The discovery sheds new light on life conditions in the past and the evolution of diseases.
Researchers at UCLA successfully reprogrammed normal tissue cells into cells with unlimited properties as embryonic stem cells, offering a promising alternative to current cloning methods. The breakthrough could lead to the creation of immune-compatible cells for disease treatment and regenerative therapies.
A £9 million study of 17,000 people has identified over 10 genes that predispose to common diseases, including type 1 and type 2 diabetes, as well as Crohn's disease. The findings have significant implications for understanding the genetic basis of disease and developing personalized treatments.
The Society of Nuclear Medicine and Molecular Imaging has developed a broad definition for molecular imaging, capturing the essence of an evolving and multidisciplinary field. The definition provides a concise explanation of the meaning of molecular imaging, including techniques such as radiotracer imaging, MRI, and optical imaging.
Researchers successfully induced pluripotent cells from fibroblasts using four transcription factors, exhibiting properties similar to embryonic stem cells. These findings have significant implications for regenerative medicine and may pave the way for generating patient-specific stem cell lines directly from a person's own cells.
A recent study found that pesticides block a key receptor in soil bacteria, disrupting natural nitrogen-fixing communications. This results in lower crop yields or significantly delayed growth. The research highlights the importance of preserving natural symbiotic relationships between crops and soil bacteria.
The NIAID Research Agenda for Multidrug-Resistant (MDR) and Extensively Drug-Resistant (XDR) Tuberculosis (TB) identifies six critical areas for investigation, including new diagnostics, therapy, and vaccines. The agenda aims to close gaps in understanding MDR/XDR TB and improve clinical management, particularly for people with HIV/AIDS.
Pediatricians now have a practical tool to help determine whether children with chronic diseases like Crohn's, juvenile arthritis and anorexia nervosa are at increased risk for bone mass deficiencies, fracture or osteoporosis as they get older. Researchers developed standardized data on bone mass categorized by sex, age, and race.
Critical high-temperature superconducting materials exhibit metallic behavior, similar to ordinary metals. This discovery paves the way for a deeper understanding and potentially higher critical temperatures, bringing us closer to room temperature superconductivity.
Researchers at Brown University have successfully captured the motion of a single electron in liquid helium using sound waves. The images show electrons moving through the fluid in snakelike paths, which are believed to be following vortex lines - a phenomenon akin to a tornado in superfluids.
Scientists have discovered a statistical relationship between brain levels of the enzyme monoamine oxidase A (MAO) A and aggressive personality in healthy non-violent volunteers. The study found that higher MAO A activity was associated with less aggressive behavior, while lower MAO A activity was linked to more aggressive tendencies.
Researchers at Whitehead Institute successfully reprogrammed mature skin cells into pluripotent cells, identical to embryonic stem cells, without using eggs or destroying embryos. These cells can give rise to live mice and transmit their genetic material to subsequent generations.
A new study identifies a genetic 'fellow traveler' that influences the risk of late-onset Alzheimer's disease. The researchers discovered the GAB2 gene, which appears to modify Alzheimer's risk in people with a specific version of the APOE gene.
Researchers identified a sodium transporter gene that helps plants grow better in low-nutrient conditions. The OsHKT2;1 transporter allows plants to take up sodium, reducing the toxic effects of salt stress and even enhancing growth under nutrient-poor soils.