Researchers discuss imaging techniques that may contribute to early diagnosis and advancements in treatment for Alzheimer's disease. The study highlights the potential of biomarkers like MRI and PET to identify underlying structural and functional pathology in AD, MCI, and related diseases.
Researchers at Queen's University have found a significant connection between two genes involved in human cancer formation by studying their behavior in worms. Increasing Eph receptor levels in worms led to decreased PTEN levels and premature death, highlighting the potential for targeted cancer therapy.
Researchers found that copper and zinc toxicity in soybeans is additive, with high copper inhibiting zinc adsorption and causing more extractable zinc. Soil texture also influenced the degree of toxicity, with coarse-textured soils being more susceptible.
The University of Colorado is launching a butterfly experiment on the International Space Station on November 16, monitoring the growth and development of monarch and painted lady butterflies in weightless conditions. Thousands of K-12 students across the nation will compare the results with similar experiments on Earth.
A new lab machine developed by Iowa State University professor Neal Iverson can simulate key elements of glacier sliding, helping researchers understand how glaciers react to climate change. The machine uses a ring of ice and hydraulic press to apply pressures equal to those beneath a 1,300-foot-thick glacier.
The study found that terrestrial ecosystems and oceans have a much greater capacity to absorb CO2 than previously thought, with the airborne fraction of CO2 remaining stable at 0.7% per decade since 1850. This challenges recent research suggesting a decrease in absorption capacity as CO2 emissions rise.
A Universite de Montréal study published in PNAS found that negative emotions amplify pain, while positive emotions reduce it. The research used fMRI scans to measure brain activity in subjects exposed to painful electric shocks while viewing pleasant or unpleasant images.
Researchers found that Impatiens pallida, also known as yellow jewelweed, can recognize its relatives and adjust its resource allocation accordingly. The plant responds differently to aboveground cues depending on whether it's competing with a relative or a stranger.
A Mayo Clinic study found that routine annual evaluation of prostate growth is not a reliable predictor for prostate cancer development. However, if PSA levels are rising quickly, a prostate biopsy is recommended to determine if prostate cancer exists.
Researchers used DNA origami to create molecular breadboards, solving the challenge of organizing carbon nanotubes into nanoscale electronic circuits. The innovative technique exploits DNA's sequence-recognition properties and stickiness to 'stick' carbon nanotubes onto its surface.
Researchers have discovered that ancient penguin DNA can significantly challenge the accuracy of traditional genetic aging measurements, suggesting that many specimens may be up to 600% younger than reported. This finding has major implications for our understanding of evolutionary rates and the history of evolution.
Researchers at Georgia Tech are developing methods to identify and remotely repair infected mobile devices and improve the security of cellular networks. They plan to investigate whether service providers can detect infected devices on their networks and will build a test bed to simulate how devices communicate over a network.
A study comparing optical diagnosis with conventional histopathology found that optical methods accurately identified up to 93% of small colorectal polyps. The method also enabled quicker follow-up colonoscopies and saved patients an estimated £6560 in clinical appointments.
The International Forum for Acute Care Trialists (InFACT) H1N1 Collaboration aims to develop coordinated, long-term approaches to treating severe H1N1 infection. Clinical trials will evaluate corticosteroids and statins as potential treatments for patients with severe H1N1 infection.
The project aims to create a communication network capable of supporting various military platforms and devices, while ensuring security and trustworthiness.
The 2009 AAAS Kavli Science Journalism Awards honored excellence in science reporting, including a story about probability told through a drifting balloon and a series on a rare genetic disorder affecting a family in rural Montana. The winners will receive $3000 and a plaque at the 2010 AAAS Annual Meeting.
A new study shows that a single hour of mindfulness meditation training can significantly reduce pain awareness and sensitivity. The research found that meditation subjects experienced less pain while meditating and after the activity was concluded, compared to control groups.
Research suggests that many dinosaur species were probably endothermic, with the potential for athletic abilities rivalling those of present-day birds and mammals. This would have allowed them to inhabit colder habitats, but also required a constant supply of fuel due to rapid metabolisms.
Researchers found that nutlin-3 activates the p53 pathway and suppresses tumor growth in mice models of chemoresistant neuroblastoma. Oral administration of nutlin-3 as a single agent reduced tumor growth and metastasis, providing a potential treatment option for advanced-stage and chemoresistant neuroblastoma.
A virtual reality game called FearNot! was tested on 1,129 children aged eight to nine in the UK and Germany. The result: a 26% decrease in bullying victimization over a three-week period.
The National Heart, Lung, and Blood Institute has published a new cookbook featuring 75 heart-healthy recipes from various cuisines. The recipes are based on the Dietary Guidelines for Americans and are limited in saturated fat, trans fat, cholesterol, and sodium.
A fossil plant discovery by Peter Wilf and colleagues has reassigned the species Libocedrus prechilensis to Papuacedrus, indicating that Patagonia was once a warm, wet tropical place. This find also establishes a connection between tropical West Pacific regions and Australia via a forested Antarctic land bridge during the Eocene.
Researchers analyzed stalagmites from a cave in the Sierra Nevada and found that past global warming coincided with centuries-long droughts in California. The study suggests that Arctic sea ice disappearance may lead to changes in precipitation patterns over California.
A new study published in Cancer Research found that a potential drug for lung cancer eliminated tumours in 50% of mice and stopped growth and resistance to treatment. The researchers are planning to take the drug into clinical trials to establish its effectiveness for patients with small cell lung cancer.
Researchers at University of Missouri have developed a pupil response test that is 92.5 percent accurate in separating children with autism from those with typical development. Children with autism show slower pupil responses to light change, a potential biomarker for early screening and improved developmental outcomes.
A meta-analysis of over 28,000 toxicological tests challenges the notion that amphibians are uniquely susceptible to pollution. Researchers found that frogs range from moderately susceptible to 'bullet-proof' against environmental threats, with other factors contributing to their decline.
A randomized controlled trial found that prone positioning in patients with acute respiratory distress syndrome (ARDS) did not significantly reduce mortality rates compared to supine positioning. Despite higher complication rates in the prone group, outcomes were similar for both groups at 28 days and 6 months.
The university is leading an NIH-funded study to create avatar doctors for role-playing practice, aiming to bridge communication gaps between patients and healthcare providers of different backgrounds. The technology aims to empower patients with the skills needed to manage chronic illnesses.
A survey of patients who experienced adverse events during hospitalization found that those disclosed to were twice as likely to rank their care as good or excellent. Disclosure was associated with improved patient perceptions of higher-quality care, even when the event was preventable.
Researchers found that transplanted stem cells restored learning and memory to normal levels in rats four months after radiotherapy. The treatment showed promise in reversing radiation-induced damage of healthy tissue in the brain.
Between 1997 and 2006, median wait times increased by 36%, with emergent patients waiting 87% longer to be seen. The percentage of patients seen within the triage target time declined an average of 0.8% per year, particularly for emergent patients.
The TRMM satellite revealed most of Ida's heaviest rainfall was located just off the coasts of Nicaragua, Honduras, and Belize. The satellite data also showed that the heavy rainfall tapered off except for a few intense thunderstorms near the northeastern coast of Honduras.
A new study suggests that progression-free survival (PFS) is a reasonable primary endpoint for clinical trials of metastatic cancer when the median survival post-progression (SPP) is less than 6 months. However, PFS benefit does not always translate to overall survival (OS) benefit in cases where SPP is longer than 12 months.
African Americans are less likely to receive kidney/pancreas transplants than similar patients in other racial groups, despite increased Medicare coverage. Physician bias may be a contributing factor, with doctors assuming African Americans have type 2 diabetes when they may actually qualify for type 1 diabetes.
NASA's TRMM and QuikScat satellites provide critical data on Tropical Storm Ida's rainfall and wind patterns. The storm's center is expected to make landfall along the northern Gulf coast Tuesday morning.
Researchers at Kennedy Krieger Institute found that children with autism have poor handwriting quality due to fine motor control issues, particularly in letter formation. The study suggests training children on letter formation and fine motor skills can improve handwriting performance.
Researchers at Northwestern University developed nanocrystalline diamond probes that outperform commercially available silicon nitride probes by 10 times in terms of durability. The new probes can accurately predict wear and have applications in atomic force microscopy.
Research suggests that NSAIDs can prevent the early appearance of neuronal cell cycle events in a mouse model of Alzheimer's disease. However, treatment with NSAIDs does not reverse existing neuronal CCEs. Additionally, interstitial macrophages may play a role in preventing asthma by inhibiting LPS-induced immune responses.
A meta-analysis of major clinical trials found that clopidogrel significantly reduces cardiovascular events by 16% in men and 7% in women, with a greater benefit for women in reducing heart attack risk. However, both sexes experience a small but real increased risk of major bleeding.
Researchers from Australia and the UK call for a new approach to sports sponsorship debates, shifting the burden of proof to the alcohol industry. They argue that the industry should show that sponsorship does not cause unhealthy alcohol use among adults or encourage children to drink.
New studies reveal the high costs of implementing performance-reporting requirements for primary care practices, which can range from $1,000 to $11,100 per practitioner. Researchers also warn that undisclosed changes made to clinical trial outcomes threaten the integrity of scientific research. In contrast, early abortion care in famil...
Patricia Berry, a renowned palliative care expert, has been inducted into the American Academy of Nursing for her significant contributions to nursing. She will work with other leaders to address healthcare issues and promote humane care for individuals with life-limiting illnesses.
Researchers have successfully transplanted genetically modified hematopoietic stem cells into mice, allowing their developing red blood cells to produce a critical lysosomal enzyme and preventing or reducing organ and central nervous system damage from Hurler's syndrome. This approach has the potential to improve treatment options for ...
Researchers at the University of Illinois have developed a wet ethanol production method that produces more gallons of ethanol and usable co-products. This process involves soaking corn kernels, resulting in higher ethanol concentrations and better quality co-products compared to conventional dry fractionation methods.
Researchers have developed thin films of silver and copper that can kill bacteria, potentially helping to reduce hospital infections. The antimicrobial properties of these metals have been known for centuries, and a recent study found that combining them may work synergistically to better eliminate microbes.
A prospective study found obesity and hypertension to be independent predictors of left atrial enlargement, increasing the risk of atrial fibrillation, stroke, and death. Obesity was associated with greater increases in left atrial volume and incidence of LAE compared to hypertension.
The Children's Hospital of Philadelphia is offering a unique option to prepubertal boys with cancer: testicular tissue biopsy and freezing. Parents are receptive to the procedure, despite its experimental nature. Success in animal models has scientists hopeful for human results.
Researchers at Wake Forest University Baptist Medical Center have successfully grown replacement penile erectile tissue in rabbits, enabling normal sexual function and offspring production. The engineered tissue has the potential to benefit patients with congenital abnormalities, penile cancer, and some cases of erectile dysfunction.
A one-year study found that participants on a low-fat diet experienced improved mood and well-being compared to those on a high-fat, low-carbohydrate diet. The study suggests that the low-carb diet may have detrimental effects on mood due to its structured nature and potential social challenges.
A recent study found that adding capecitabine to a standard chemotherapy regimen for breast cancer improves recurrence-free survival, but at the cost of increased adverse events. The treatment was associated with more cases of diarrhea and hand-foot syndrome, while also causing more severe neutropenia.
Researchers at Southwest Research Institute have created a new proof-of-concept dental restorative material made with zirconia nanoplatelets, which are super hard due to the arrangement of atoms in the material. The new fillings aim to replace amalgam, containing mercury, and offer improved durability and ease of use.
Researchers found that surfboard-shaped nanoparticles stay closest to blood vessel walls, offering a potential solution for targeted cancer therapy. The study suggests that current transfusion techniques may not be ideal, and alternative methods could establish proper blood arrangement faster.
Researchers at North Carolina State University have developed a new warning system to spot financial statement fraud by evaluating easily verifiable nonfinancial measures such as employee growth, facility square footage, and industry-specific metrics. This method shows promise in detecting fraudulent companies with inflated revenue cla...
Osedax marine worms feast on submerged bones using symbiotic bacteria, with unique sexual and digestive habits and diverse habitats across the world's oceans. Recent research discovered up to twelve further distinct evolutionary lineages exist beyond the five species already described.
Scientists have identified a key mechanism behind the binding action of HIV antibodies 2F5 and 4E10, which could lead to the development of more effective vaccines. The study found that successful docking requires attachment to the virus's membrane containing lipid.
Researchers found that marine reserves replenish harvested species outside the reserve, producing larger fish and more plentiful populations. The establishment of reserves also supports larval production, benefiting fished populations.
Researchers at Mayo Clinic have found that robotic sacrocolpopexy surgery dramatically reduces patient hospital stay and recovery time. The procedure also shows fewer postoperative complications, shorter hospital stays, and faster postoperative recovery compared to traditional abdominal sacrocolpopexy.
A study of postmenopausal women found that the risk of hip fractures steeply rises with age, being seven times higher in 70-74 year olds than in 50-54 year olds. The study also discovered a slightly increased risk for early menopause before age 45.
Rutgers computer scientists are developing a new approach to strengthen online security by asking users activity-based personal questions, making it harder for intruders to guess answers. Early studies suggest these questions related to recent activities are more robust than traditional security questions.
A study of 970 older adults found that those with weaker muscles were more likely to develop Alzheimer's disease and experience cognitive decline. Muscle strength was also linked to the development of mild cognitive impairment, suggesting a common pathogenesis underlying loss of muscle strength and cognition in aging.