A new study in Cell Metabolism has found that leptin, a hormone produced by fat tissue, influences baseline dopamine levels and our motivation to eat. Leptin-responsive neurons in the brain's lateral hypothalamic area feed into the mesolimbic dopamine system, controlling motivation for food, sex, and other desires.
Researchers sequenced a second leukemia patient's genome, discovering genetic changes also found in gliomas and AML-linked mutations. The study highlights the potential of genome sequencing to unravel cancer's genetic basis, paving the way for more effective treatments.
A recent study published in Biological Psychiatry found that hormone levels play a crucial role in stress resilience among military combat divers. Soldiers with higher dehydroepiandrosterone (DHEA) levels performed better during stressful underwater navigation exercises.
A recent study at the University of Alberta found that most pharmacy pamphlets fail to meet guidelines for accessibility, with only 23% meeting 9 out of 10 Canadian recommendations. The study highlights a need for improved accessibility and readability in pharmaceutical information.
Primary care physicians will receive web-based training on melanoma screening through a new program developed with a team of researchers. The goal is to improve detection and reduce mortality rates from melanoma.
A Penn study reverses conventional wisdom on fertility declines, showing high development levels can actually increase fertility rates. Researchers analyzed 24 developed countries over 30 years and found a positive association between HDI and fertility at advanced levels of development.
A new study from Washington University in St. Louis suggests that historically based blockbuster movies can be a double-edged sword when it comes to helping students learn and retain information. When film clips were consistent with textbook material, correct recall increased by 50%, but misinformation from the film led to false recall...
Researchers have developed a new approach to treat ischemic pathologies by activating the protein HIF, which stimulates revascularization and organ repair. This strategy aims to address cardiovascular diseases that cause millions of deaths worldwide, by over-producing HIF in response to ischemia.
Researchers found that focusing of waves by shoals and currents can increase the likelihood of freak waves by up to 10 times. Freak waves are extreme waves measuring roughly three times the size of average wave height, posing significant risks for shipping and navigation in coastal areas.
Physicians warn that mandated treatments in healthcare reform can misalign doctor-patient goals, leading to financial conflicts. The authors advocate for a 'shared decision-making' model that incorporates medical humanism to ensure patient autonomy and cultural values are respected.
Researchers have gained in-depth knowledge of pyruvate carboxylase's structure, a metabolic enzyme linked to genetic diseases like lactic acidaemia and hypoglycaemia. The study also sheds light on its potential role in obesity and diabetes treatments.
Scientists used a whole-animal infection model to screen 37,000 potential drugs on infected C. elegans worms, identifying 28 new antimicrobials with novel mechanisms of action.
The grant aims to support the development of a vaccine designed to protect pigs from novel H1N1 and other strains of influenza. Researchers at Iowa State University will test the technology against various strains.
A study at UPMC in Pittsburgh, PA found that combining digital breast tomosynthesis and full-field digital mammography can decrease recall rates by 30% for cancer-free examinations. This could alleviate patient stress and economic burden on imaging facilities.
A study performed at Massachusetts General Hospital and Harvard Medical School found that MRI can evaluate beta cell mass and detect inflammation of the pancreas in patients with diabetes. This information can aid physicians in developing personalized treatment plans and achieving insulin independence for patients.
A novel function of a gut hormone was discovered that can potentially lower glucose levels in diabetes by activating specific receptors. The study found that CCK peptide hormone rapidly lowers blood glucose by triggering a signal to the brain and liver.
A research project aims to produce a computer model for water managers to reduce energy consumption while meeting increased demand for water. The project, funded by the National Science Foundation, will help address water scarcity issues in regions like Arizona, where population growth and drought are exacerbating the problem.
Researchers discovered that Yellow-lipped Sea Kraits deceive predators by twisting their tails to resemble a second head, complete with venom. This false-head behaviour is an overlooked anti-predator adaptation that helps sea snakes survive in the ocean.
A new UAB study found that novice parents identified less than half of the safety hazards in a simulated home environment. Parents recognized only 47% of the hazards and considered their own children as being invulnerable to injuries.
A new study analyzing nearly 25,000 Medicare patients found that blood transfusions for hospitalized cardiac patients can be associated with increased risks of infection and death. The analysis also revealed substantial variation in transfusion practices among hospitals, highlighting the need for evidence-based guidelines.
Adding anesthetic lidocaine to radiocolloid injection improves patient comfort without compromising SLN identification, reducing pain and discomfort for patients with early breast cancer. The study concludes that this practice should be introduced as standard.
A new study reveals that social stress can lead to the deposition of more fat in the abdominal cavity, accelerating the buildup of plaque in blood vessels and increasing the risk of heart disease. The study found that stressed monkeys developed more visceral fat, which promotes coronary artery atherosclerosis.
A new study suggests that changes in gene expression called epigenetic alterations can serve as markers for detecting CLL early and monitoring its progression. Researchers also point to a strategy for treating the disease earlier using drugs that reverse such changes.
Researchers used magnetotelluric sounding to detect large amounts of water in New Zealand's crust, revealing three processes that help deform the crust above it. The study found water is released at varying depths, contributing to earthquake generation and faulting in the region.
Researchers at the University of North Carolina have decoded the entire structure of an HIV genome, revealing intricate patterns and structures that play a previously unappreciated role in the virus's lifecycle. This breakthrough opens doors for further research and potential antiviral drug development.
Researchers from Cold Spring Harbor Laboratory present a method for targeting hematopoietic stem cells using engineered lentiviral vectors. An alternative approach using DNA transposons offers a safer and effective way for non-viral gene transfer.
A Duke University researcher has developed a two-tiered model to simulate the interplay between epidemiological dynamics and evolutionary changes in flu viruses. The model focuses on understanding how flu evolves differently in humans versus animals, with potential implications for developing more effective vaccines.
The Obama administration has allocated over $327 million in Recovery Act funding to support scientific research, instrumentation, and laboratory infrastructure projects at ten DOE national laboratories across six states. This funding will create new jobs while maintaining the US's scientific leadership and economic competitiveness.
Researchers, led by Professor Neal Armstrong, are working to harness solar energy for utility-scale generation and portable devices, with potential breakthroughs in organic solar cells and interface science.
A world-first study has revealed that percutaneous vertebroplasty, a common treatment for painful osteoporotic fractures, is not an effective treatment. The study found no significant benefits of the procedure in improving symptoms or quality of life over six months.
The Trustworthy Information Systems for Healthcare project aims to improve the security and effectiveness of information technology infrastructure in healthcare settings. Researchers will address fundamental challenges in information security, such as protecting clinical information while ensuring clinician access.
Researchers find marijuana smoke causes more cell damage and DNA harm than tobacco smoke, but doesn't cause chromosome damage. The study provides new insights into marijuana's potential health risks and challenges common perceptions about its relative safety.
Researchers at the Pacific Northwest National Laboratory have identified key characteristics of a rhodium-based catalyst that efficiently releases hydrogen from ammonia borane. The study provides new insights into the catalytic reaction, shedding light on the hardest part of the process and suggesting ways to improve the catalyst.
The Kadoorie Biobank Study in China has received a £2.5 million funding boost to monitor the health of over 500,000 participants aged 35-74 for decades to come. This study will provide valuable insights into environmental and genetic causes of common conditions in China.
Researchers at the Salk Institute found that human brain cells harbor astonishing genomic variability due to mobile DNA elements. This phenomenon may drive evolution and create neural diversity, making each person unique.
A new study found that relief of pain and improvement in function were similar in patients treated with vertebroplasty and simulated vertebroplasty without cement injections. The study raises questions about the procedure's long-term efficacy, suggesting that other factors may contribute to its benefits.
A $5 million, 5-year program funded by NSF aims to double the number of minority undergraduate degrees in STEM disciplines. Academic support programs, including tutoring and peer-led team learning, will be provided to help students overcome barriers to success.
A recent study published in Environmental Science & Technology found that bioethanol production requires up to 861 billion gallons of water, with some regions consuming as much as 2,100 gallons per gallon of ethanol produced. This highlights the need for regional-specific considerations when implementing biofuel mandates.
The article 'Tripping Points: Barriers and Bargaining Chips on the Road to Copenhagen' reveals key issues hindering climate agreement, including finance and technology transfer. Researchers predict a poker-like game of negotiations, with countries delaying decisions until the last hours of the conference.
A study by McMaster University found that women tend to choose foods with lower calories when dining with a man compared to another woman, while dining with more men leads to even lower calorie choices. The research suggests that social grouping and perceived attractiveness play a role in food selection.
Researchers have generated the first partial genomic sequence of waterhemp, a Midwestern weed resistant to herbicides. The data will help identify resistance mechanisms and inform strategies to combat it.
At Station ALOHA, ocean acidification rates have been documented over two decades, with surface acidity growing more acidic at the expected rate from chemical equilibration. However, year-to-year changes vary on seasonal and inter-annual timescales, driven by climate-induced changes in ocean mixing.
A three-protein DNA repair complex called MRN is crucial for a normal gene-shuffling process to proceed properly. The study found that Mre11 plays a critical role in preventing cancer by repairing double strand breaks in B cells.
A new study investigates the effects of the Khmer Rouge trials on Cambodians, finding that while most believe justice will be served, nearly 90% experience painful memories. The trials' impact on mental health remains uncertain, with higher rates of PTSD among those who remember torture and murder.
Researchers found that a gut hormone called cholecystokinin (CCK) activates receptors to regulate glucose levels via a gut-brain-liver neuronal axis. CCK's effects depend on activation of CCK-A receptors, which slow down glucose production in the liver.
Scientists have created detailed 3D computer models of ancient spider fossils, revealing physical traits that helped them hunt for prey and evade predators. The models show that one species was an ambush predator with spiked defensive features, while another had grasping claws to manipulate its prey.
Researchers found that insects can transfer nanoparticles to each other, raising concerns about environmental impact. Exposure to certain nanoparticles caused locomotor impairment and mortality in adult fruit flies.
Dr. Michael E. O'Brien has been recognized for his outstanding contributions to dental education, receiving the Daniel M. Laskin Award for Outstanding Predoctoral Educator in Oral and Maxillofacial Surgery. He is a respected educator, mentor, and clinician with over 25 years of experience at LSUHSC.
New DNA and RNA aptamers have shown promise as treatments for various diseases, including macular degeneration and cancer. Their ease of production, stability, and chemical modifications enhance their drug-like properties.
New commentary published in JNCI Journal of the National Cancer Institute discusses treatment options for metastatic breast cancer. The European School of Oncology Metastatic Breast Cancer Task Force recommends sequential chemotherapy with a single agent for patients without rapid progression or life-threatening metastasis.
Researchers discovered that positive expectations significantly impact recovery time for whiplash injuries. Those with optimistic outlooks recovered 3 times faster than those with negative expectations. The severity of the injury had no effect on recovery times.
Clemson University chemical engineering professor Mark C. Thies has partnered with Doros Theodorou of the National Technical University of Athens to develop molecular models for advanced-carbon materials. Their goal is to create strong, lightweight materials for transportation vehicles, wind turbines, and energy-efficient aircraft.
Researchers at Burnham Institute for Medical Research discovered that the REDD1 protein is degraded under hypoxic conditions, enabling cells to rapidly restore mTOR signaling. This regulation mechanism plays a crucial role in cellular stress response and may be linked to tumor growth in cancer.