Researchers have successfully transplanted human nerve stem cells into rats' damaged spinal cords, which survived, grew, and formed connections with native cells. The breakthrough establishes a new doctrine for regenerative neuroscience, suggesting the spinal cord can support transplanted cell development.
A new research project at WPI aims to create a reconfigurable computing device that combines speed and power efficiency with low cost and flexibility. The smart cell will use parallel computing to perform hundreds of calculations simultaneously, making it up to 300 times faster than microprocessors.
Researchers have discovered a reflex mechanism in insects that allows them to maintain constant speed and altitude, even in strong headwinds. By controlling lift force using the optic flow regulator, insects can fly safely without measuring their speed or altitude.
A mathematical model created by researchers shows that South African migration played a major role in the spread of HIV, increasing high-risk sexual behavior among migrant men and their partners. Without migration, peak HIV prevalence would be less than 5 percent.
Researchers at the University of Wisconsin-Madison found that deaf children with two cochlear implants can more accurately localize sounds over time. The study, led by Ruth Litovsky, suggests that having two implants allows children to better integrate sound information from both ears in their brain.
Researchers have found that mature trees in the Eastern Desert of Egypt are in significant decline, with over 50% disappearing between 1965 and 2003. The traditional resource management practices developed by desert people are being replaced by commercial charcoal production, highlighting the urgent need for sustainable forest management.
A new DNA sequencing approach allows researchers to analyze ancient ecosystems in just a few hours, providing more accurate and complete information. This breakthrough helps scientists better understand past climates, species decline, and potential causes of extinction.
A new study reveals that giant noctule bats feed on songbirds during nocturnal migrations, contradicting earlier suggestions that they only eat insects. The researchers used stable isotopes to track the bats' diet and found a significant presence of songbird flesh in their stomachs during autumn.
Scientists at Rensselaer Polytechnic Institute have developed a method to precisely control the movement of water through carbon nanotube membranes. By applying low-voltage electricity, they can switch between repelling and pumping water, paving the way for technologies like instant drinking water purification and DNA separation.
A team of scientists at WashU Medicine has discovered that the enzyme dipeptidyl peptidase I plays a critical role in promoting the growth of abdominal aortic aneurysms. Without this enzyme, mice do not develop aneurysms due to reduced recruitment of inflammatory cells.
Researchers at St. Jude Children's Research Hospital found that the N1 protein in seasonal flu vaccines can trigger an antibody response to avian flu virus, offering cross-protection to some individuals. The study suggests that annual influenza vaccines may be beneficial to populations in areas where H5N1 poses a threat to humans.
A study using DNA chips has identified four genes associated with type 2 diabetes, accounting for up to 70% of the genetic risk. The genes include TCF7L2, HHEX, EXT2, and SLC30A8, which play major roles in insulin production and pancreatic function.
The International Research Network, ECSAW, aims to improve air quality and water treatment by reducing NOx emissions and developing new fuels for fuel cells. The four-year collaboration will also focus on decontaminating air and water using photocatalysis and green chemistry.
A new type of protein discovered by Queen's University researchers may be useful in developing treatments for antibiotic-resistant bacteria. The protein, called YihE or RdoA, has been shown to be a potentially good target in a wide range of bacteria that cause infectious diseases.
A recent study published in PLOS ONE found significant regional variation in depression rates among households in Lahore, Quetta, and Karachi. Middle-aged females with secondary school education were most affected, highlighting the need to revise existing mental health policies.
A new class of computational methods, called LoCoH (local convex hull) methods, has been developed to construct distributions of where monitored organisms are most likely to be found in space and time. These methods have proven especially useful in evaluating the spatial needs of threatened species and designing parks to conserve them.
A recent study published in JAMA found that reducing body iron stores through phlebotomy in patients with peripheral artery disease did not significantly decrease the risk of death or nonfatal cardiovascular events. However, younger patients and those without diabetes showed apparent improvement with iron reduction.
Researchers at the Salk Institute have discovered a novel RPA-like complex that specifically targets the short single-stranded DNA tail end of yeast chromosomes. This complex helps maintain telomere integrity and prevent premature senescence or cancer development.
In Maryland, the absence of health insurance coverage costs $1.47 billion in annual expenditures, with individuals without insurance contributing $2,371 each year. State and federal funds, as well as private payers and physicians, absorb much of this burden.
A study published in Archives of Ophthalmology confirms the effectiveness of genetic testing in diagnosing complex retinal diseases. The research found that genetic testing confirmed a clinician's diagnosis in half of the tested cases, providing crucial information for healthcare professionals.
A recent study by Yale University researchers found that BPA alters the expression of key developmental genes necessary for uterine development, potentially leading to infertility in females. The study used pregnant female mice exposed to varying doses of BPA, revealing a link between BPA exposure and fertility defects.
The new high-performance mirror, called the high-index contrast sub-wavelength grating (HCG), packs the same reflective punch as current mirrors but is at least 20 times thinner. This characteristic presents critical advantages for today's ever smaller integrated optical devices.
Researchers at Massachusetts General Hospital found that patients and therapists share similar physiologic responses during moments of high positive emotion, leading to higher ratings of therapist empathy. The study suggests a biological basis for empathic connection during psychotherapy, with implications for improving therapeutic tec...
Researchers have discovered unique properties in a molecular magnet that could significantly increase the resolution of MRIs, leading to more accurate diagnoses. The new material, Fe8, is non-toxic and water-soluble, making it safe for injection into the body.
Researchers have identified a new protein super-family called DANGER, which plays a crucial role in cell growth and differentiation. The discovery has significant implications for understanding animal evolution and development, as well as potential treatments for diseases such as Smith-Magenis syndrome and chronic myeleoid leukemia.
A NASA study suggests that a warmer future climate will increase droughts in the southwest United States and other parts of the world. The researchers found that changes in solar output in the past increased surface warming and altered atmospheric moisture and circulations, leading to severe droughts.
Researchers have identified a genetic variation associated with a mild form of schizophrenia, which also confers improved overall survival. The HOPA12pb gene variation affects dopamine-releasing neurons and may hold the key to developing new treatments for schizophrenia and other related illnesses.
A new theory proposes that cold, ice-containing climates created by strong algal growth in the oceans led to the rise of multicellular animals. This climate-biosphere interaction mechanism may have facilitated complex life around more massive and short-lived stars.
Researchers found that garlic tablets are effective in reducing morbidity for upper respiratory tract infections and resolving warts in children. However, more research is needed to explore its effects on cardiovascular disease and potential adverse effects when applied topically, which can cause second-degree burns.
Researchers discovered that nonconscious exposure to a significant person's name can cause individuals to act in defiance of their partner's or boss's wishes. People with high levels of reactance tend to be more resistant to these influences.
2006 was the fifth warmest year in the past century, according to NASA's Goddard Institute for Space Studies. Global temperatures have been increasing steadily, with the greatest warming occurring at high latitudes and most ocean areas.
Researchers at Max Planck Institute successfully integrated in-vitro synthesized membrane proteins into artificial lipid membranes, overcoming previous difficulties due to protein solubility. This breakthrough enables the creation of biosensors that can detect poisons, explosives, or drugs.
The NASA Goddard Space Science Center has won several prestigious awards this season, including the Bruno Rossi Prize for high-energy astrophysics and the Annie Jump Cannon Award for female astronomers. These awards recognize the center's outstanding research efforts and achievements in space science.
Researchers developed and validated two clinical algorithms to predict global cardiovascular risk in women, showing improved accuracy and reclassification of 40-50% of those at intermediate risk. The Reynolds Risk Score calculator is freely accessible online.
A study found that routine upstream administration of platelet glycoprotein IIb/IIIa inhibitors reduced composite ischemia events, while deferred selective use resulted in fewer major bleeding complications. However, the criterion for noninferiority was not met.
A new risk-factor list for postmenopausal women could help reduce cardiovascular disease deaths by incorporating family history and C-reactive protein. The updated criteria may change the risk scores for at least 20% of studied women.
Researchers found females mature earlier when shown males with long 'swords', while young males delayed maturity to avoid competition. This is the first evidence of a species adjusting sexual maturation based on visual cues.
Communicators and researchers are working together to develop effective science communication strategies, exploring ways to identify common goals and potential funding sources. This collaboration aims to create rich, complete stories about what scientists do and why, benefiting taxpayers and advancing policy.
Researchers mapped zebrafish axonal projections to reveal dual receptor expression and epigenetic programming. The study also explores the interaction of 'liking' and 'wanting' responses associated with compulsive behaviors, and investigates the role of ADAM10 in APP processing.
Researchers discovered evidence that chimpanzees used stone tools to crack nuts around 4300 years ago, pushing back the origin of this behavior by thousands of years. The study found similarities between chimpanzee and human ancestors' cultural attributes, suggesting a possible common ancestor for these behaviors.
A University of Oregon study found that young men with no trauma history are the least likely population to believe a person's recounting of child sexual abuse. The study also found that males with high sexism beliefs tend to deny harm in such incidents, contributing to a culture of disbelief.
A Finnish twin study reveals that acquired obesity is associated with deleterious alterations in lipid metabolism, including increased lysophosphatidylcholines and decreased ether phospholipids. The study also found a link between the obese twins' serum lipidomic profile and whole body insulin resistance.