A research team from Purdue University has successfully created RNA-based nanoscale structures, which could be used as building blocks for microscopic machines. The researchers have developed methods to self-assemble RNA molecules into complex shapes, such as arrays that can form the scaffolding on which other components could be mounted.
A blood stem cell has been found to give rise to bone in mice, suggesting a potential basis for treatments to repair or restore bone. The study used retroviral integration site analysis to prove that a single type of stem cell can produce two distinct bodily tissues.
Researchers found that children who received venom allergy shots had significantly fewer life-threatening reactions when restung, even years later. Dr. Rebecca Gruchalla recommends the shots for kids with severe allergic reactions to insect stings, which are responsible for at least 40 fatal stings per year.
The survey found that despite parents' awareness of hepatitis B, many are unaware of the disease's severity and the availability of a vaccine. The Society for Adolescent Medicine provides guidance to enhance parent-adolescent relationships and offers resources to promote healthy behaviors.
Researchers have successfully bridged the 'Kuzyk quantum gap' in molecular nonlinear optics, creating a new hybrid material that can harness light's power. This innovation could lead to faster internet speeds and more efficient communication systems.
Transgenic tobacco plants produce recombinant proteins economically, benefiting from plant-made vaccines with reduced viral screening costs. The process of recovering and purifying these proteins is expensive, requiring development of more economical techniques to lower production costs.
A Rutgers-Newark scientist has found that mosquitoes may carry a lethal parasite called B. algerae, which can invade human muscle tissue and cause death. The parasite is typically found in the tissues of mosquitoes and can be transmitted to humans through mosquito bites.
Researchers studied fossil whales and found significant changes in their ear anatomy, which enabled them to transition from a land-based to a marine-based existence. The new sound transmission system allowed modern cetaceans to locate prey using echolocation, making it crucial for survival.
The Oregon Health & Science University has launched a new Bioanalytical Shared Resource (BSR) lab, supported by the $500 million Oregon Opportunity initiative. The BSR provides advanced analytical services for drugs and molecules, enabling researchers to quickly move from laboratory to patient testing.
A recent study published in Environmental Science & Technology found that farmed salmon have significantly higher levels of flame retardants, including polybrominated diphenyl ethers (PBDEs), than wild salmon. Wild Chinook salmon from British Columbia showed the highest average PBDE levels.
Scientists charted T. rex life history for the first time, revealing a giant size due to an extraordinary growth spurt from 14 to 18 years of age. This was followed by about 10 years of little or no growth as an adult. The study provides insight into T. rex evolution, biology, biomechanics and population dynamics.
Researchers used growth line counts on T. rex and other relatives to estimate accelerated growth from age 14-18, gaining insight into how these dinosaurs became gargantuan. The study compares T. rex's growth rate to modern-day elephants.
Researchers identified vulnerabilities in Wi-Fi networks that can drain battery life and disrupt communication infrastructure. A proposed solution involves reputation-based control systems to strengthen routing protocols against stealth attacks.
The Cluster mission has found a new way for charged particles from the solar wind to enter Earth's magnetosphere, using giant vortices called non-linear Kelvin-Helmholtz waves. These vortices can carry particles inside the magnetosphere, potentially explaining the presence of hot plasma stored in the tail of Earth's magnetic field.
The National Science Foundation has awarded Virginia Tech a $600,000 grant to support the development of efficient inexpensive fuel cell materials. The university will work with Battelle, Los Alamos National Laboratory, and several companies to bridge gaps in materials, processes, and test methodologies.
Researchers at the University of Pennsylvania have created a library of small protein-like molecules that can self-assemble to form hollow corkscrew-like pores. These man-made pores can mimic biological function, filtering out unwanted molecules from solutions or carrying specific molecules across cellular membranes.
A new treatment combination of peginterferon and ribavirin has been shown to significantly improve viral control in patients with both HIV and hepatitis C. The study found that 40% of patients treated with peginterferon achieved HCV clearance, compared to 12% on the standard interferon treatment.
This book presents six different models of the cardiovascular and pulmonary system, including a two-dimensional modeling of fluid dynamics in the heart. The models are introduced by case studies and can be studied individually, serving as an excellent introduction for researchers and graduate students.
A study found that children who received venom immunotherapy for moderate to severe allergic reactions had a lower risk of future reactions, including those with no prior treatment. The therapy was shown to last for up to three and a half years, making it an effective long-term solution for managing bee sting allergies.
Researchers at Stanford Medicine have identified leukemia stem cells in chronic myelogenous leukemia, a breakthrough that could lead to new targeted therapies. The discovery reveals that normal adult cells can mutate into cancer stem cells, which are resistant to chemotherapy and require a specific protein called Wnt to self-renew.
Researchers discover Rho proteins cause cells to break off and form colonies distant from the original cell colony. This phenomenon may lead to the development of more specific treatments for cancerous cells.
Four New York City clinics improved primary care services for low-income patients by redesigning their systems using a learning collaborative approach. The initiatives achieved significant reductions in wait times, improved financial performance, and increased patient access.
The Pacific Northwest National Laboratory is conducting a marathon testing regime to ensure personal radiation detection equipment meets new standards for identifying potential threats. The tests will evaluate the electrical systems, mechanical operations, environmental susceptibilities, and radiological sensitivities of over 100 instr...
Researchers identified two genetic signatures in CLL samples, one associated with a good prognosis and the other with a mutation in the Ig gene. The study suggests that miRNA expression may be used to predict CLL behavior and provides new targets for future drug development.
A new UCSD study found that general pediatricians and specialists frequently miss diagnosing Kawasaki disease in children under six months and over eight years old, leading to preventable coronary artery damage. The study aims to raise awareness and provide recommendations to improve diagnosis and treatment of the disease.
Recent findings by scientists at Lawrence Berkeley National Laboratory and University of California, San Francisco, reveal telomere crisis as a key event in breast cancer progression. The researchers found that telomere length decreases in hyperplasia, carcinoma in situ, and invasive cancers, indicating increased genomic instability.
A phase 1 vaccine trial has demonstrated that a group A streptococcal vaccine appears safe and well-tolerated, inducing immune responses capable of conferring protection against multiple strains. The study's findings suggest that a specific dose and schedule may be effective in preventing group A streptococcal infections.
Despite searching for large lakes and seas, no conclusive evidence of water has been found. However, the Spirit rover did uncover small amounts of water in rock samples. The team also took spectacular photographs of Martian landscapes, including 3-D images that provided valuable insights.
A new study found that children walk almost as much as their grandparents did in the 1940s, with over 75% of 17/18-year-old trips taking place on foot. The researchers suggest transport policy should prioritize pedestrians' needs.
The American Physiological Society has awarded over $36,000 to its 2004 undergraduate research fellows. The fellowships cover travel and living expenses during a 10-week fellowship program.
A new study found that three mahogany species require specialized soils with specific plant nutrients, limiting their distribution. The research has significant implications for forest management and 'green' certified timber.
Researchers found that monkeys with impaired dopamine receptors were more productive and accurate in their tasks, while those without the receptors procrastinated. The study uses a gene knockdown technique to deplete D2 receptors, leading to improved performance.
Research reveals that women in IT jobs face complex interactions of factors including social networks, age, parenthood, and education level. Managers can address the issue by creating diverse networking opportunities and helping employees develop their own skills.
Researchers analyze daily temperature ranges to explain global warming trends. A new seismic model reveals the cause of New Zealand's volcanism by tracking magma movement. Small robotic aircraft can now patrol the ocean, providing high-resolution oceanographic observations.
Researchers at the University of Warwick analyzed French trade cards to understand consumer habits, social values, and advertising techniques during the 18th century. The study revealed how trade cards seduced people into buying goods by showing beautiful displays and suggesting exclusivity.
Researchers at the University of Nevada, Reno recorded a cluster of nearly 1,600 small earthquakes beneath Lake Tahoe, causing the nearby Slide Mountain to rise by 8 millimeters. The earthquakes coincided with an unprecedented uplift of the mountain, which scientists believe was caused by magma movement about 20 miles deep.
A new study has found that high levels of thyroid hormone are linked to an increased risk of miscarriage in women who are resistant to normal levels. The research, conducted on a family with a rare genetic disorder, revealed a significant increase in miscarriage rates among affected mothers compared to unaffected relatives.
A recent study published in JAMA found that excessive maternal thyroid hormone levels can lead to miscarriage and negatively impact fetal growth, with unaffected fetuses being more susceptible to these effects. The study also discovered that high maternal thyroid hormone levels can induce a catabolic state during fetal life.
Researchers found genetic changes in mice fed a low-calorie diet that suppressed diseases and protected against chemical exposure. Compounds mimicking these changes target key receptors, including PPARalpha, with potential for developing life-extending drugs.
Excess nitrogen and phosphorus from farming activities cause eutrophication, creating a food web that imperils frogs. A parasite, Ribeiroia ondatrae, infects tadpoles, causing deformities.
A study found that vaccinated cases were half as contagious as unvaccinated cases, with varying levels of contagiousness depending on the number of lesions. The authors suggest continued monitoring to improve vaccine policy decisions for future generations.
A recent study analyzing 100,000 students preparing for the SAT, ACT, and GRE reveals poor study habits among high schoolers. The study found that students spent more time on the test preparation website than expected, with many not practicing math or reading comprehension questions.
A team of researchers has developed an implantable electronic device that can help doctors monitor heart rhythms and prevent atrial fibrillation (AF) attacks. The device uses lower energy shocks to terminate AF episodes, reducing pain and risk of complications.
A team of MCG students has discovered a vegetarian alternative to chicken liver for diagnostic imaging, utilizing Carborite Pancake Mix. The product's binding rate is 97-98%, comparable to that of chicken liver.
Researchers at Duke University have been studying ring-tailed lemurs' scent language to understand their complex chemical communications. The scientists found that lemurs use 'scentences', combinations of scents extending their chemical messages, and identified specific compounds in their scent profiles.
A study of 326 children with severe malaria found that 61% had retinopathy, which was associated with higher death rates and prolonged coma. The researchers suggest that retinal signs may be related to cerebral pathophysiology in childhood CM.
Autophagy, a natural process where cells recycle damaged organelles, is induced by starvation or inhibition of key signaling pathways. Researchers discovered that an insect hormone ecdysone promotes programmed autophagy via PI3K signaling regulation, highlighting the complexity of autophagy control in multicellular animals.
Researchers found that exposure to bovine material alone cannot explain the young age of vCJD cases in the UK; an additional age-dependent susceptibility factor is required. The study suggests that permeability of the intestinal barrier changes with age, but further research is needed.
A new hypoxic event has been detected off the Oregon coast, causing a massive die-off of fish and invertebrate marine species. Dissolved oxygen levels are significantly lower than those seen in the past 40 years, suggesting a major change in ocean circulation patterns.
Research found that African-American women are four times more likely to show significant alterations in the p53 gene, which is associated with poor prognosis. The study confirms earlier reports of racial differences in breast cancer outcomes and highlights the need for further investigation into underlying mechanisms.
UC Davis researchers have created a PET scanner that can image tiny cancer growths in mice, allowing them to monitor tumor development over time. The system enables early detection of cancer transformation and could lead to more sensitive screening tests for cancer-fighting drugs.
Despite their limited light sensitivity, nocturnal bees learn and remember visual landmarks around the nest entrance before foraging. These bees use these landmarks to orient themselves upon return, showcasing impressive navigational abilities.
Physicists James D. Bjorken and Curtis G. Callan have been awarded the 2004 Dirac Medal by the Abdus Salam International Centre for Theoretical Physics (ICTP) for their significant contributions to theoretical physics and mathematics, including the development of deep inelastic scattering techniques that shed light on strong interactio...
Researchers found that short-term hormone therapy can be beneficial for women with mild to severe menopausal symptoms, but may not be suitable for those at high risk of cardiovascular disease. The study suggests that the decision to use hormone therapy should be based on individual goals and CVD risk.
A new study by USC researchers reveals high levels of visual impairment and eye disease among Latinos, with nearly one in four participants having diabetes and nearly half showing signs of diabetic retinopathy. The study also found that open-angle glaucoma and ocular hypertension were prevalent among the Latino population.
Comet composition can be studied for the first time using a new technique, providing insights into the early solar system. Carbon disulfide has been detected in comet 122P/De Vico, with implications for understanding the origins of life.
Fewer than 20% of US surgeons have high enough volume to optimize breast cancer outcomes, with median surgeon performing only 6 operations in two years. High-volume surgeons provide more consistent standard care, such as hormone receptor testing and breast conserving surgery.
Saint Louis University researchers discovered that the blood-brain barrier has a transport system for enzymes that is lost with aging. This discovery opens up new possibilities for treating lysosomal storage diseases by targeting the blood-brain barrier's delivery mechanism.
Researchers have created a smart window coating that reflects infrared light when temperatures rise above 29 degrees Celsius, reducing unwanted heat. This intelligent glass can help reduce energy consumption and provide cooler conditions for occupants.
The American Academy of Neurology has updated its diagnostic standard for headaches, adding new subtypes and disorders. The revised criteria provide a clearer framework for diagnosing and treating various types of primary and secondary headaches.