A recent study by the Society of Environmental Toxicology and Chemistry identified key knowledge gaps in understanding pharmaceutical and personal care product (PPCP) impacts on ecosystems and human health. The priority areas include research on human health exposure, as well as regional testing methods for measuring PPCPs in the envir...
Researchers found a specific type of neuron in the parafacial zone responsible for deep sleep, allowing unprecedented control over brain function. The discovery may lead to new medications for treating sleep disorders and developing safer anesthetics.
Researchers will study changes in the addicted brain that lead to relapse, with a focus on transforming growth factor-beta signaling. The goal is to identify novel therapies for treating cocaine addiction and other psychostimulants.
Researchers at Indiana University have isolated a process that damages the lungs of donors who suffered from traumatic brain injury, which may lead to improved lung transplant outcomes. The study found that fluid accumulation in the lungs occurs within hours after head trauma, limiting oxygenation and reducing lung function by nearly 80%.
A team of researchers used computer simulations to study how ion flux works in voltage gated sodium ion channels. The results revealed that a specific amino acid, glutamic acid, plays a crucial role in regulating channel flux and enabling selective sodium influx.
The VCU Alcohol Research Center will investigate the genetic systems contributing to alcoholism using advanced statistical and bioinformatic methods. Researchers will focus on gene networks influencing alcohol behaviors in humans and animals.
A Virginia Tech study reveals that common household chemicals can decrease reproduction in mice, raising concerns about potential effects on human fertility. The research found that female mice exposed to certain disinfectant ingredients took longer to get pregnant and had fewer offspring.
The Penn-led expert panel recommends key components for public health research, including baseline ground water quality data and ambient air quality monitoring. The panel also urges the use of community-based participatory research principles to address concerns from stakeholders.
A Roundtable Discussion explores the application of novel toxicology models to predict adverse health effects and environmental exposures. The discussion covers human cell models, high-throughput screening methods, and three-dimensional tissue culture models.
The study found that fipronil and imidacloprid inhibit mitochondrial bioenergetics in honeybees, leading to depleted cell energy and impaired flight muscles. This effect can contribute to the inability of bees to forage and return to their hives.
Research from the University of Guelph reveals that arctic mammals like caribou can metabolize current-use pesticides ingested through vegetation, limiting their impact on humans who consume them. The study found significant biomagnification was not observed in this food chain.
Exposure to pesticide DDT before birth is linked to increased risk of metabolic syndrome in female mice, characterized by obesity, high cholesterol, and diabetes. The study also found sex differences, with females more susceptible to these conditions.
A new study reveals how a drug called KP1212 induces rapid mutation in HIV, which could help combat the residual virus in patients. The researchers believe that over time, this treatment could lead to the destruction of latent viruses, potentially curing HIV patients.
Researchers developed a predictive model to identify carcinogenic chemicals using gene expression response in the liver, improving cancer screening and evaluation processes. The new approach enables accurate and cost-effective screening for over 80,000 chemicals currently in commercial use.
Researchers found that currently used pesticides are not biomagnified in Arctic food chains. Instead, Arctic mammals metabolize these pesticides, preventing their accumulation in the ecosystem.
A new study estimates the potential cancer risk by age group for non-dietary ingestion and dermal exposure to third hand tobacco smoke. The results indicate potentially severe long-term consequences, particularly to children, with cancer risks exceeding EPA recommendations in three-quarters of smokers' homes.
Research found that low doses of arsenic, similar to those consumed by humans, cause lung cancer in male mice. Arsenic levels above 50 ppb led to significant increases in benign and malignant lung tumors.
Researchers at the University at Buffalo have identified SOX10 as a key transcription factor that initiates myelination in human brain cells. This discovery brings researchers closer to developing a viral or pharmaceutical approach to inducing SOX10 in MS patients, which could lead to a more effective treatment for multiple sclerosis.
Researchers discover synthetic triterpenoids suppress colon cancer onset by impeding inflammation and increasing 15-hydroxyprostaglandin dehydrogenase gene expression. Oral administration in mice shows promise for chemoprevention, with potential to delay or halt colon cancer development.
A NOAA study found that four common mosquito control pesticides pose little risk to juvenile oysters and hard clams, but climate stressors such as hypoxia and acidification increase their toxicity. The research provides valuable data for shellfish mariculture operations and environmental resource agencies.
Researchers at Penn University's Center for Environmental Toxicology will study asbestos exposure pathways and develop methods for bioremediation. The study aims to identify factors that increase the risk of mesothelioma and determine if genetic or environmental factors play a role.
A study by Johns Hopkins Medicine found that saliva enzymes, blood proteins, and muscle proteins can protect against DNA damage caused by pyrogallol-like polyphenols (PLPs) in teas, coffees, and liquid smoke flavorings. The presence of these defenses may explain why PLPs are not causing widespread illness despite their toxic effects.
A study found that removing JAK2 from healthy hematopoietic stem cells accelerates leukemia in mice, causing a rapid increase in cancerous cells. Healthy cells, however, are severely impaired and often disappear due to the loss of JAK2.
Researchers at Tel Aviv University pinpoint a genetic regulator, p53 and MicroRNA34, as the cause of phocomelia syndrome in mice. The study provides new insights into the mechanisms of teratogens and may lead to better understanding of toxin-induced birth defects.
Research reveals that urban river pollutants are suppressing the health and development of wild birds, with chicks from contaminated rivers showing signs of underweight and hormonal imbalance. The study highlights the importance of monitoring bird populations as indicators of environmental well-being and food-web contamination.
Researchers have identified various transcription mechanisms in zebrafish during embryonic development, which may help understand the formation of abnormalities or cancer. The study reveals that different starting points are used for transcription before and after activation of the embryonic genome.
Scientists at the University of Arizona have discovered a molecular pathway that could help create new therapies for end-stage liver disease. By understanding how Nrf2 is suppressed in cirrhotic livers, researchers have identified Hrd1 as a key player in exacerbating the disease process.
The center will investigate mechanisms underlying addiction and discover new treatments, focusing on the serotonin system. It will prioritize individuals with impulsivity traits, which are associated with higher relapse rates.
A novel compound, RO5263397, has been found to severely blunt a range of cocaine addiction behaviors, including relapse behavior, in animal studies. The compound targets TAAR1 receptor and shows promise as a potential lead compound for treating cocaine addiction.
Researchers found that triclosan and octylphenol promote breast cancer cell growth and tumor development in lab tests. The study's findings suggest that exposure to these endocrine-disrupting chemicals may significantly increase the risk of breast cancer development.
Freiburg researchers identify LRP1 as a key molecule that regulates the intake of toxic bacteria like Clostridium perfringens. This finding opens up new avenues for developing agents against clostridia and may lead to breakthroughs in treating diseases caused by these pathogens.
Research found that fish exposed to antidepressants like Fluoxetine displayed altered mating behaviors, repetitive behavior, and aggression towards female fish. The effects were reversible once the concentration level was reduced.
Research reveals that beneficial insects like dung beetles and flies react differently to ivermectin due to varying levels of sensitivity. This poses a risk to ecosystem functioning and highlights the need for more comprehensive safety tests to protect these organisms.
Researchers at Michigan State University have identified the core signaling pathway that activates scleroderma and found chemical compounds that can turn it off. This discovery offers a new approach to treating the disease, which currently lacks effective treatments.
Using lead ammunition in shooting sports poses a significant environmental risk, with thousands of tonnes of lead released annually. Replacing it with steel-based ammunition could mitigate this issue and reduce the impact on wildlife.
Research reveals endocrine disrupting chemicals cause feminization in male thick-lipped grey mullet; 60-91% of males show vitellogenin and Aromatase Cyp19a1b gene expression, indicating feminization. Estuaries across Basque coast show high levels of pollutants contributing to the phenomenon.
Scientists have developed a liver organ construct that responds to toxins like real human livers, paving the way for more accurate drug screening. The project aims to create interconnected human organ constructs using a miniaturized platform, potentially reducing costs and increasing efficiency in toxicology testing.
A new non-animal skin sensitization method using a human-derived skin model has been validated to correctly identify chemicals causing allergic responses in humans. The method, SenCeeTox, uses a three-dimensional model that accurately replicates normal human skin, reducing the need for animal testing.
The University of Plymouth is developing a new technique using 'virtual fish' cells to study the toxicity and concentration of man-made chemicals. This method has the potential to significantly reduce the number of live animals required for scientific research, with promising results already shown in previous studies.
Patients who received assistance from poison centers had shorter hospital stays and lower hospital charges. The study found a cumulative decrease of $2,078 in hospital charges per 10 patients.
Scientists have identified issues with standard toxicity testing data used to inform dispersant decisions, highlighting the need for more accurate and comparable data. The current practices do not adequately replicate field conditions, such as sea state and weather, or consider exposure durations and concentrations.
Recent research by Eawag and EPFL suggests that silver nanoparticles are not toxic to certain types of algae, which can survive even low concentrations of silver ions. However, this finding raises concerns about the potential impact on higher organisms, such as fish and other aquatic life.
Environmental scientists warn that synthetic food packaging chemicals can leach into foods and harm human health over the long term. The authors argue that little is known about their impact on chronic conditions like cancer, obesity, and neurological disorders.
A chemical leak in Charleston, W.Va., highlights the shortcomings of policies and research on thousands of chemicals. The incident led to 300,000 residents relying on bottled water due to the lack of complete toxicology studies on the leaked chemical, MCHM.
Researchers at Cedars-Sinai will investigate the potential links between air pollution and brain cancer, with a focus on three pollutants: naphthalene, butadiene, and isoprene. The study aims to determine if prolonged exposure to these toxins can cause molecular changes in the brain that lead to brain tumor development.
Researchers found that rare and common plant species had similar tolerances to widely used herbicides, suggesting a lack of persistent effects on plant communities. The study highlights the need for alternative strategies, such as preserving farmland habitats, in plant conservation efforts.
A study published in the New England Journal of Medicine found a wide range of dangers associated with synthetic marijuana use. The substance has been linked to altered mental status, irregular heartbeat, seizures, and breathing difficulties, resulting in over 263 emergency room visits in Colorado alone.
Researchers at Cleveland Clinic have identified a critical role for the Neuroligin-1 protein in Alzheimer's-related memory loss, disrupting synaptic networks and leading to memory decline. The discovery may provide new approaches for preventing and treating Alzheimer's disease.
Research reveals that fetal exposure to nicotine increases long-term risk of obesity and metabolic syndrome in offspring, as the liver produces more triglycerides. The study found that pregnant rats exposed to nicotine had an increased risk of developing these conditions later in life.
A new study found that the human body louse can transmit bacterial infections to humans, while the human head louse does not. The researchers discovered that several immune genes were regulated differently in head and body lice after infection with the bacteria, and the infection progressed further in body lice over time.
A new test identified a urinary marker that differentiates street heroin users from those who have ingested morphine present in poppy seeds. This discovery addresses the 'poppy seed defense' challenge in workplace drug testing and forensic toxicology.
Researchers are monitoring air pollution levels and their impact on health using advanced methods like X-ray fluorescence spectrometry. The study aims to measure the specific chemical makeup of polluted air and its effects on human health.
Researchers at the University at Buffalo used optogenetics to stimulate dopamine neurons, reducing binge drinking behavior in rats. The technique has potential applications for treating alcoholism, mental illnesses, and neurological diseases.
Scientists have discovered novel compounds produced by chemical reactions that are hundreds of times more mutagenic than their parent compounds. These newly found NPAHs were not previously known to exist and raise concerns about the health impacts of heavily-polluted urban air or dietary exposure.
Researchers have identified a key protein, GCN5b, necessary for the Toxoplasma parasite to replicate, offering new targets for drug therapies. Disabling this complex halted parasite replication, suggesting its potential as a treatment for toxoplasmosis and malaria.
The NIH Bridging Interventional Development Gaps (BrIDGs) program aims to advance treatments for acute radiation syndrome, brain injury from cardiac arrest, and beta thalassemia. BrIDGs supports expert contractors to perform pre-clinical services, with seven compounds licensed during or after development through the program.
Researchers identify two therapeutic targets to block cancer cell growth: PAK and STAT5. The shutdown of either target significantly delays leukemia progression in mice, offering new hope for cancer treatment.
A Mayo Clinic study found that endoxifen, an active metabolite of tamoxifen, is safe and shows anti-tumor activity in early-stage trials. The findings suggest a potential new treatment for estrogen-positive breast cancer patients who don't respond to standard hormonal therapies.
The journal retracted a paper by Séralini et al. due to inconclusive data, but faced questions about the decision-making process and COPE guidelines. Editor-in-Chief A. Wallace Hayes responds to concerns, stating that Professor Goodman's involvement was minimal and not pressured upon him.
Researchers from North Carolina State University have updated a toxicology database to track therapeutic drugs and their unintentional toxic effects. The database, which contains over 250,000 statements, helps investigators develop and test hypotheses about how drugs cause adverse events.