The adult mammalian lymphatic vasculature is derived from embryonic lymph sacs and has been shown to originate from venous endothelial cells using genetically modified mice. Understanding this origin is crucial for preventing, diagnosing, and curing lymphatic disorders.
Researchers at Thomas Jefferson University found that HIV recruits cellular miRNA to control viral RNA translation, allowing the virus to remain dormant. Manipulating miRNA's inhibitory effect on HIV may lead to new treatment strategies against the virus.
Studies in mice reveal that ozone exposure enhances lung injury in response to bacterial toxins and boosts programmed cell death in innate immune system cells. This can lead to an overactive immune response, killing key immune cells and potentially making the lung more vulnerable to subsequent invaders.
A regulatory protein called CTLA-4 inhibits the action of HIV-specific CD4 T cells, leading to immune system breakdown in AIDS patients. Elevated CTLA-4 expression correlates with disease progression and reduced CD4 counts, suggesting a potential treatment target.
Researchers at the University of Bristol identified a heart protection mechanism in mice that may be exploited to improve treatments for patients with coronary disease. The study found that hearts with coronary disease became more resistant to damage after mock surgery, suggesting a potential therapeutic strategy.
Countries with a majority Protestant population have significantly higher employment rates compared to those dominated by other religions. Female employment rates also exhibit a notable disparity, with Protestant countries boasting approximately an 11 percentage point advantage.
A study found that when one parent provides little support and the other provides more support, children have reduced conflicts with friends and a better understanding of emotions. However, when both parents provide a lot of support, children may have less emotional understanding and more conflict with peers.
A new study has discovered that a single gene in the codling moth can make it 100,000 times less susceptible to a granulovirus, used as an environmentally friendly means of biological crop protection. The virus resistance is inherited on the Z chromosome and can spread quickly through populations.
Young girls and women are more likely to believe that negative past events predict future events, leading to increased worries, risk perception, and anxiety compared to boys and men. This knowledge develops during the preschool years and is essential for processing past trauma and making decisions.
A study found that children with dysfunctional families and living in poor neighborhoods experience greater asthma symptoms and poorer lung function. Family support was linked to reduced inflammation, while neighborhood problems led to increased smoking and exposure to smoke.
Scientists at Jefferson University have found a new molecular evidence of the role of prolactin in breast cancer. The hormone stimulates a signaling pathway that may regulate the growth and survival of breast cancer cells. Inhibiting the Jak1 protein could represent a new drug target for treating breast cancer.
New research from Cardiff University reveals that acid rain recovery is much slower than anticipated, with many UK streams still highly acidified. Biological recovery has been particularly poor, harming fish and other aquatic life.
Researchers found that treating OSA patients with CPAP significantly decreases atherosclerosis markers in just months. This study links OSA directly to artery hardening, providing new evidence for the causal connection between OSA and cardiovascular events.
Patients with acute lung injury treated at ICUs requiring board-certified critical care physicians have a one-third lower mortality rate compared to those at open ICUs. This study, which analyzed data from nearly 1,100 patients, suggests that intensivist staffing improves patient outcomes.
Youth with shared deviant values in high-quality friendships spend more time discussing negative topics, leading to higher levels of problem behavior. Conversely, lower-quality relationships are associated with better behavioral outcomes.
A University of Oregon study found that close friendships involving deviant topics can predict future problem behavior. The research suggests that peers play a significant role in shaping outcomes, and that bonding over deviant values can exacerbate antisocial behavior.
A new study published in Science journal reveals the genetic makeup and biology of Giardia lamblia, a parasite causing diarrhea that affects millions. The research may lead to better diagnostic tools and treatments for giardiasis.
A new study led by Duke University researchers found distinct differences in tumor susceptibility to chemotherapy drugs based on gene expression profiling. This allows clinicians to predict which patients are most likely to respond to standard therapy and offers alternative options for those not responding.
A new study found associations between occupation and increased risk of dying from systemic autoimmune diseases, particularly in farming and industrial jobs. Exposure to specific substances like asbestos and pesticides was also linked to higher mortality rates.
A Mayo Clinic review of patients' responses to droperidol found no proven cases of complications directly attributable to the drug's use. The study suggests that alternative medications may not be as effective in controlling nausea and vomiting, leading some anesthesiologists to resume low-dose use of droperidol.
Brookhaven researchers developed a compound kinoform lens to surpass the critical angle limit, enabling efficient focusing of x-rays down to extremely small spots. This breakthrough advances nanoscience, energy, biology, and materials research with potential applications in alternative-energy technologies and new drug development.
A systematic review of 200+ interventions aims to reduce racial and ethnic disparities in healthcare, focusing on cardiovascular disease, diabetes, depression, and breast cancer. The study identifies promising strategies for promoting equitable health outcomes among communities of color.
Researchers at Massachusetts General Hospital found a strong association between exposure to gadolinium-containing contrast agents and the development of nephrogenic systemic fibrosis (NSF) in kidney failure patients. The study also showed that individuals with NSF had a significantly increased risk of dying within two years.
Researchers found that 50% of overweight, hypertensive adults achieved normal body weight and blood pressure after six months of treatment with a reduced-calorie diet. This suggests that blood pressure may be secondary to body weight rather than essential hypertension in these patients.
The maximum transmission rate of quantum-encrypted messages is limited by detector dead times, which can compromise security. Researchers aim to reduce these times to increase speeds and enhance wireless cryptography.
Bilingual infants learn new words differently, following a pattern that involves paying less attention to detailed sound information. This adaptive approach may help bilinguals catch up with peers who learn one language.
Researchers aim to improve diagnosis and treatment of neurologic emergencies with rapid, reliable information. The Point-of-Care Center will focus on developing technologies for fast and accurate diagnosis at the bedside or in the operating room.
The National Institute of Standards and Technology (NIST) has awarded $138.7 million in funding to 56 innovative technology projects, including medical diagnostic techniques and alternative energy sources. The projects were selected through a competitive, peer-reviewed process and represent a total potential investment of up to $342.7 ...
Astronomers have detected a huge burst of radio energy from the distant universe, suggesting a new area of study in astrophysics. The burst was so bright that it saturated equipment and could be equivalent to a large power station running for two billion years.
A study found that mindfulness-based stress reduction (MBSR) therapy significantly improves psychological symptoms and well-being in RA patients, but has no impact on disease activity. After 6 months, the MBSR group achieved a 35% reduction in psychological distress.
Regular physical activity is linked to increased tibial cartilage volume and reduced cartilage defects in healthy adults. Moderate exercise also shows promise in lowering the incidence of bone marrow lesions, a potential indicator of knee OA progression.
In the trial, three patients experienced significant partial responses to the combination treatment, with stable disease noted in several non-treated tumours. The treatment was well-tolerated, with mostly Grade 1 or 2 toxicities, and showed evidence of anti-tumour activity.
Scientists have developed a spectroscopic technique to measure magnetic properties of thin film edges, which become dominant at the nanoscale. The method allows for prediction of behavior in similar structures, impacting nanoscale electronics design.
A study of California adults with high blood pressure found that nearly half do not take medication, despite seeing a doctor. Regular doctor visits significantly improve medication adherence in those who do take pills.
Professor Glenn Gaesser analyzes peer-reviewed research, debunking the notion that high-carb diets lead to weight gain. He finds that people consuming high-carb diets tend to be slimmer and healthier than those on low-carb diets. Gaesser attributes this to a higher quality of diet, including more fiber-rich foods.
A recent US study found that the actual high school dropout rate is significantly higher than previously reported, with approximately one-quarter of students failing to graduate. The discrepancy arises from differing data sources, including the CPS and CCD surveys, which yield conflicting results on dropout rates and completion rates.
Children benefit when mothers and fathers react differently to their child's negative emotions, with one comforting and problem-solving while the other provides space. This helps gain experience in understanding and controlling emotions, developing complex thinking about emotions.
A new AAAS analysis uses high-resolution satellite images to document human rights violations in eastern Burma. The research confirms eyewitness accounts of village destruction, forced relocations, and a growing military presence at 25 sites.
Researchers found that children with older brothers become more aggressive over time, while those with older sisters who are very aggressive also show increased aggression. The study suggests that both siblings and parents play a role in the development of aggression in adolescents.
A new study published in Arthritis & Rheumatism found that patients with kidney failure who develop nephrogenic systemic fibrosis (NSF) have a significantly higher risk of dying. Gadolinium exposure is identified as a significant risk factor for developing NSF.
Researchers have made significant breakthroughs in developing new male contraceptives, including a hormone-based regimen that worked in 90% of men, a vasectomy alternative with high success rates, and a vitamin A-blocking drug that showed no health effects. These advancements offer hope for men seeking reliable birth control options.
Researchers at the University of Texas Medical Branch have developed a potential new therapy for uveitis, an inflammatory eye condition causing 5-15% of all cases of total blindness in the US. The treatment uses an aldose reductase inhibitor to reduce inflammation and is currently being tested in clinical trials.
The University of Kentucky Center for the Study of Violence Against Children has been awarded a four-year, $1.6 million grant to develop and disseminate evidence-based practices for treating traumatic stress in children exposed to violence. The project will establish a clinical training institute and train regional partners to deliver ...
Researchers discovered that cockroaches learn better at night and retain memories for several days, while morning training leads to complete memory loss. This study provides new insights into the interaction between circadian clocks and learning in insects.
A new study published in Preventive Medicine found that 94% of 14-15 year olds watched R-rated movies and 38.5% watched weekly, suggesting the R rating may not prevent teen smoking. The study suggests glamorization of smoking in movies can be a significant risk factor for youth smoking.
A Yale University study found that structural changes to the human genome, including missing or rearranged segments, contribute to individual differences. These variations were identified using Paired-End Mapping and rapid sequencing methods.
Traces of oxygen appeared in Earth's atmosphere 2.5 billion years ago, 50-100 million years before the Great Oxidation Event. The discovery was made by analyzing a drill core from Western Australia and provides new insights into the history of atmospheric oxygen.
A new electronic system created by researchers from the University of Granada improves driving ability at night using information extracted from night visors. The system makes intelligent cars more sophisticated by informing drivers about obstacles on the road.
The 2007 International Science and Engineering Visualization Challenge has selected its top winning entries, featuring visually striking images that showcase the beauty of science. The contest, sponsored by AAAS and NSF, honors artists who use visual media to promote scientific research.
A new study suggests that deep-sea temperatures warmed about 1,300 years before the tropical surface ocean and well before the rise in atmospheric CO2. The finding indicates that rising greenhouse gas was likely a result of warming and may have accelerated the meltdown, but was not its main cause.
Researchers at the University of Illinois discovered a genetic link between maternal and altruistic behaviors in wasps, finding similarities with honey bee workers. The study suggests that eusociality may have evolved from maternal behavior in paper wasps, challenging Darwinian predictions.
Activation of DNA damage response in early stages of Kaposi's sarcoma development functions as an anti-cancer barrier also in virus-induced malignancies. The study found that viral oncogene-induced DNA damage response is activated in Kaposi's sarcoma tumorigenesis, leading to growth arrest or apoptosis.
A comprehensive survey of maternal depression found that 8.7% of women were depressed before pregnancy, 6.9% during pregnancy, and 10.4% after childbirth. Nearly three-fourths of women with postpartum depression also experienced depression before or during pregnancy.
A recent Stanford-AP survey found that Americans are pessimistic about the state of the environment and want immediate action to improve it. The survey revealed that 52% expect the world's natural environment to be in worse shape in 10 years, while 84% believe global warming is occurring.
A study published in EMBO reports reveals that AKAP18, a crucial regulator of protein kinase A, may help the heart beat faster in response to adrenaline or noradrenaline. This could lead to improved survival rates for patients with heart failure and heritable heart disease.
Researchers identified two genes linked to suicidal thinking during antidepressant treatment, with certain versions increasing the risk by 2-15 fold. The findings may lead to genetic testing and individualized treatments for depression.
A new method using 454 sequencing has identified significant human genetic variation, including structural variations that play a crucial role in genetic diversity. The study found over 1000 structural variations in two individuals and suggests that these variations may have notable physical effects on an individual.
Researchers estimate a significant increase in summer heat-related deaths in New York City due to climate change, with a 47-95% rise projected by the 2050s. The urban heat island effect and population vulnerability will exacerbate this risk.
A recent study by researchers at the University of Chicago found that many diabetics experience a significant burden from managing their condition, which can be as impactful on quality of life as the disease itself. Patients reported being distressed by end-stage complications and disliked intensive treatments.
A new communication tool, VMS, improves the effectiveness of medication instructions and reduces complications among patients taking warfarin. The study found that VMS worked especially well among Spanish-speaking patients, correcting misunderstandings within 28 days.