Researchers at Goethe University found that two out of ten plastic rings in baby teethers release chemicals with hormone-like effects. These additives can inhibit the effects of androgens such as testosterone and act like natural oestrogen in the body. The study highlights the need for manufacturers, regulatory agencies, and scientists...
For severe salicylate poisoning, hemodialysis is the best remedy according to a comprehensive review of medical literature. Salicylate poisoning causes significant harm and death, requiring prompt treatment with dialysis.
A study found that 2 out of 10 plastic teethers contained significant endocrine activity, including methylparaben and unidentified compounds. The presence of parabens in one product is unusual, highlighting the need for manufacturers and regulators to address chemical exposure in baby products.
The accumulation of perfluoroalkyl substances in Canadian birds' eggs is a complex issue with varying trends among species. Some toxins are decreasing due to manufacturing phase-outs, while others continue to rise in the oceanic environment.
Researchers developed a unique approach using microscopic gas bubbles to deliver directly to cancer cells a viral gene therapy in combination with an experimental drug. The treatment strategy used a novel 'cancer terminator virus' and demonstrated enhanced prostate cancer cell death while sparing healthy cells in preclinical experiments.
Researchers found that H. azteca from polluted sites are less sensitive to pyrethroid insecticides than lab-grown ones. This suggests standard testing methods may not accurately reflect environmental health
Researchers have found that healthy newborns can alter and rid their bodies of bisphenol A (BPA), a chemical used in plastics and food packaging. The study challenged the current thinking on BPA toxicology and suggests that exposure to BPA in infancy may not be as harmful as previously believed.
A new approach has reversed Parkinson's-like symptoms in rats by delivering dopamine via biodegradable nanoparticles that crossed the blood-brain barrier without side effects. This breakthrough could lead to a new treatment for human patients.
Scientists have isolated dental stem cell lines and identified a natural mechanism for repairing tooth lesions. The study reveals that dopamine and serotonin play a crucial role in recruiting stem cells, which then repair the tooth. This breakthrough discovery opens up new therapeutic strategies to mobilize resident dental stem cells.
A study found that female liver cells are more susceptible to adverse effects of drugs than male counterparts, particularly postmenopausal women. The findings highlight the need for a sex-specific approach in toxicology and suggest that current theories cannot explain why women are generally more sensitive to drug toxicity.
Michigan State University researchers are investigating whether belly fat hormones cause high blood pressure by communicating with blood vessels in the abdomen. Visceral fat, a harmful type of fat that surrounds organs and blood vessels, is believed to play a key role in this process.
Research in mice exposes pregnant females to phthalate DEHP, leading to male-to-female sex ratio imbalance and altered pup reproductive outcomes. Adult ovaries are also disrupted, with decreased follicle growth and steroid hormone production.
Researchers at the University of Illinois found that BPA exposure can cause reproductive problems in mice for three generations. The study reveals that low doses of BPA can have a profound impact on fertility and pregnancy success, contradicting the common assumption that higher doses are more harmful.
Researchers found that chronic drinking is associated with higher CYP2E1 and CYP2U1 protein expression in the prefrontal cortex (PFC) and amygdala (AMG), particularly in the AMG. This could lead to interactions between metabolism of drugs and endogenous substrates, altering drug response and brain physiology.
A study published in Clinical Toxicology found that US poisonings are underreported by 60-90%, with charges approaching $8 billion annually. Alcohol and illicit drug use were the most common reasons for hospital visits.
Researchers from PETA and PCRM review 50+ technologically advanced tobacco toxicology studies, finding non-animal methods to be quantitatively unreliable. They call for guidance from the FDA on in vitro test methods to reduce animal testing in support of tobacco product applications.
A new mass spectrometry method developed by IUPUI chemist Nicholas Manicke can rapidly detect drugs and poisons in blood samples. The method, known as paper spray mass spectrometry, has potential use in various fields such as biomedical research, clinical testing, and forensic science.
A new human respiratory tissue model, MucilAir, has been shown to maintain normal biochemical processes for at least six months. The model is suitable for testing the impact of repeated exposures over a prolonged period, making it a valuable tool for assessing the toxicological effects of inhaled chemicals and safety of medicines.
The Vanderbilt-Pittsburgh Resource for Predictive Toxicology aims to develop alternative approaches for toxicity testing, focusing on 3-D human cell cultures. The center will expose these cultures to a range of previously studied toxic chemicals to predict their effects on humans.
A study by Virginia Commonwealth University researchers has found a biological clue that may help explain why some drinkers develop a dependence on alcohol. The discovery could lead to the development of more effective drugs to combat alcoholism.
A promising new antivenom derived from opossum serum has shown promise in neutralizing snake venom, with potential for widespread distribution and a single injectable dose. The peptide-based treatment could save thousands of lives worldwide without the side effects of current treatments.
Research reveals spinal cord neurons in the dorsal horn use glycine to inhibit pain signals, while also controlling various forms of itch. The discovery offers new insights into the Gate Control Theory and potential therapeutic targets for pain management.
Researchers have identified a critical molecular pathway in blood stem cells that can be manipulated to enhance their regenerative capacity and reduce the signs of aging. By slowing down mitochondrial activity, they found that levels of SIRT7 can help cope with stress caused by misfolded proteins.
IU scientists have discovered a new way the parasite Toxoplasma gondii modifies brain cells, which may help explain changes in the behavior of mice and potentially influence human behavior. The findings suggest that Toxoplasma infection could alter human behavior, with some research suggesting an association with schizophrenia.
Researchers found that periphyton, a community of algae and bacteria, helps transform mercury pollution from a Superfund site along the Androscoggin River into a more toxic form of mercury. Lower-than-expected levels of methylmercury were also detected in crayfish and small fish downstream from the site.
A new study of adult daughters found that women whose parents smoked during pregnancy had an increased risk of developing diabetes mellitus. Prenatal environmental tobacco smoke exposure appears to be a modifiable risk factor for diabetes in offspring.
Researchers have discovered a way to keep remyelination going using an FDA-approved drug solifenacin, which boosts myelin synthesis and improves auditory function in mice with myelin-related disease. The study shows that targeting human oligodendrocyte progenitor cells with solifenacin promotes differentiation and myelin production.
A new study suggests that nicotine's metabolite cotinine amplifies the effect of acetylcholine, a primary chemical messenger involved in learning and memory, potentially providing therapeutic benefits for Alzheimer's and other memory disorders. Cotinine may also have synergistic effects with existing Alzheimer's therapies.
E-cigarettes have shown potential in helping smokers reduce or quit, with a significant role to play in public health. Research suggests that about 9% of smokers who used electronic cigarettes were able to stop smoking for up to one year, compared to 4% of those using nicotine-free placebos.
A study published by UC Davis and Public Health Institute found that children exposed to tobacco smoke in utero are two to three times more likely to develop diabetes as adults. Birth weight did not affect the risk of developing diabetes.
Mercury contamination is affecting fish populations worldwide, with yellowfin tuna concentrations doubling by 2050 if emissions continue to rise. Human activity is driving the increase in mercury levels, highlighting the need for urgent action to reduce pollution.
A new study led by the University of Michigan found that mercury concentrations in Hawaiian yellowfin tuna increased at a rate of 3.8% per year from 1998 to 2008, likely due to rising atmospheric mercury levels. This increase is consistent with global trends and highlights the need for stricter policies to reduce mercury emissions.
Researchers identified a link between a PARK2 gene mutation and familial lung cancer, implicating the mutation as a genetic susceptibility factor. The findings suggest potential targeted therapies for individuals with this mutation variant.
A new human study confirms that oral BPA exposure does not lead to high levels in the blood, contradicting earlier assumptions made by a dog study. The study found that the body inactivates most BPA molecules and eliminates them within 24 hours, with no evidence of accumulation.
INRS researchers will conduct innovative research in environmental equity, reproductive toxicology and infection treatment with new equipment. The lab will focus on noise and air pollution concentration, public services for vulnerable populations and prevention of male infertility.
A new study by UMass Chan Medical School found that opioids administered in the emergency room do not influence patient satisfaction scores. Factors such as wait time and communication play a greater role, according to the study's authors.
Researchers at ETH Zurich have developed a method to amplify gene samples containing damaged DNA adducts, which are common in cancer. This breakthrough could enable the analysis of molecular mechanisms involved in cancer initiation and risk factors.
The study of zebrafish at the European Zebrafish Resource Center has shown that signaling molecules are transmitted in bundles via long filopodia, influencing signaling properties and tissue development. This precise control enables cells to develop their special structure and function.
Researchers found that 'normal' metabolizers had better quit rates with varenicline versus the nicotine patch, while slow metabolizers could benefit from the patch. The study suggests tailoring treatment to an individual's nicotine breakdown speed may be a viable strategy to improve quit rates.
Researchers found that exposure to cold temperatures increases levels of the protein Zfp516, which activates UCP1 in brown fat. Mice with boosted Zfp516 protein gained 30% less weight on a high-fat diet, suggesting a potential target for obesity and diabetes treatment.
Researchers found that exposure to diesel exhaust for just two hours can alter DNA methylation, changing the expression of approximately 400 genes. This epigenetic shift can have long-term effects on health, even without noticeable symptoms.
Researchers found that methamphetamine users are three times more likely to develop Parkinson's disease than non-users, with women facing nearly five times the risk. The study suggests long-term effects of meth use may manifest years after initial use, leading to increased incidence in women.
A team of researchers found that inhibiting the intestinal farnesoid X receptor with drugs like tempol and antibiotics can prevent nonalcoholic fatty liver disease in mice. This discovery highlights the complex role of gut microbes in human health and potential targets for treating metabolic disorders.
Researchers have developed a method to track the movement of polycyclic aromatic hydrocarbons (PAHs) through the human body, shedding light on their role as carcinogens. The technology uses accelerator mass spectrometry to detect tiny amounts of PAHs in blood and explore how they are processed by humans.
A new study found that laundry detergent pods pose a significant risk to young children, with 17,230 cases reported between 2012 and 2013. Children under 6 years old accounted for nearly two-thirds of cases, with nearly half experiencing vomiting after exposure.
A genetically diverse mouse model has been developed to predict human responses to chemical exposures. The Diversity Outbred mice show a range of susceptibility to benzene exposure, similar to humans, and can help identify genetic factors involved.
Researchers have found that bats carry the bacterial species Bartonella mayotimonensis, which causes deadly human infections in the USA. Bats are ideal reservoirs for pathogenic viruses and play a vital role in natural ecosystems.
By rewriting genes from a fungus to produce a specific compound of potential therapeutic importance, researchers have successfully synthesized natural drug compounds in large quantities. This innovative approach leverages the native machinery of an organism to address long-standing challenges in drug synthesis.
Researchers found that bald and golden eagles in North America have dangerously high levels of polybrominated diphenyl ethers (PBDEs) in their livers, with concentrations highest near urban areas. The study suggests a range of exposure to these toxic chemicals, with more research needed to understand trends and accumulation patterns.
Researchers at Paxman Coolers and the University of Huddersfield are developing new scalp cooling technology to improve hair preservation rates among cancer patients. The project aims to increase hair retention from 50% to 80%, with the goal of reducing hair loss during chemotherapy.
A new vaccine is being developed to help smokers quit by blocking the physiological pleasure that nicotine elicits in the brain. The vaccine uses biodegradable nanoparticles to prevent nicotine molecules from entering the brain, reducing cravings and addiction.
A recent USGS and Baylor University study examines the bioaccumulation of pharmaceuticals in the water-fish-osprey food web. The research findings indicate that ospreys do not carry significant amounts of human pharmaceutical chemicals, despite widespread occurrence of these chemicals in water.
Scientists at the University of Bonn have discovered a new signaling pathway that utilizes adenosine to stimulate brown fat cells. This 'browning' process may help convert white fat cells into energy-burning brown cells, potentially aiding in weight loss and reducing the risk of chronic diseases.
The sequencing of the house fly genome has identified unique detoxification and immune system genes that could aid in understanding human disease susceptibility. By studying these genes, scientists hope to develop treatments or vaccines for diseases transmitted by flies, such as typhoid and trachoma.
Researchers found that blocking STAT3 increases killing activity against melanoma and leukemia cells in Natural Killer (NK) cells. This increase in effectiveness also reduces metastasis of melanoma cells. The findings suggest a potential therapeutic strategy for cancer treatment by boosting NK cell function.
A University of Utah-led study used advanced imaging techniques to understand the inner workings of Protein Kinase A (PKA), a master switch regulating cellular functions. The research found that PKA changes shape with only one sensor, revealing new insights into its unique biological functions and potential targets for disease treatment.
A new study at UC Berkeley found that mice fed a high-fat diet gained 18 percent less weight when drinking clarified grapefruit juice compared to water. The juice also improved glucose, insulin and triacylglycerol levels in mice.
Professor Daniel G. Cyr, a renowned toxicologist at INRS, has received the Gabriel L. Plaa Award of Distinction for his pioneering work on the effects of environmental contaminants on male reproductive health. His research aims to understand the underlying cellular mechanisms of male infertility, with a focus on endocrine disruptors.
The HHS has added four new substances to its 13th Report on Carcinogens, including ortho-toluidine, 1-bromopropane, cumene, and pentachlorophenol. Ortho-toluidine is a known human carcinogen, while the other three are reasonably anticipated to be human carcinogens based on studies in humans and animals.
Researchers found compounds in Camelina sativa seed that increase liver detoxification enzymes fivefold, showcasing its potential as a nutritional supplement and anti-cancer agent. The bioactive ingredients work synergistically when combined, similar to sulforaphane in broccoli.