A University of California, Berkeley study has identified a key enzyme target for indole-3-carbinol, a broccoli compound that slows down rapidly advancing breast cancer cell growth. The research provides a basis for designing more effective anti-cancer drugs and could lead to breakthroughs in treating prostate tumors.
Researchers at Penn State have discovered that increasing selenium levels in human blood cells can reduce the multiplication of the AIDS virus. By targeting a specific protein called Tat, selenium can slow down viral replication, with results showing a 10-fold decrease.
Research from the University of Leicester reveals that nitric oxide can alter brain function, impacting neurodegenerative diseases like Alzheimer's. The finding suggests a potential new approach for treating these conditions and gaining a deeper understanding of brain function.
Researchers have discovered a peptide that converts the Bcl-2 protein from a cancer cell's friend to a foe, allowing it to kill cancer cells and shrink tumors. This breakthrough could lead to the development of new cancer-fighting drugs targeting Bcl-2.
Biotech scientists are applying genomics technologies to toxicology research to better understand the effects of novel drug candidates. This trend towards predictive toxicogenomics aims to develop a new compound's mechanism of action and predict toxicity, with several companies and consortia already working on this technology.
A $1.7 million study will investigate how the body metabolizes ecstasy, a 'hug drug' with serious negative effects on brain function. The research aims to identify individuals at risk of long-term adverse effects from the drug.
Walter Leal, a UC Davis professor, received the ESA award for his groundbreaking research on mosquito repellent DEET. His lab discovered the mode of action for DEET, which doesn't mask the host's smell but rather repels mosquitoes through direct detection.
A study published in Toxicological Sciences reveals a possible link between pet food contamination and baby formula contamination, with melamine and cyanuric acid identified as key contaminants. The research suggests that acidification of the urine may be a reasonable treatment option for victims.
A new $24 million national center, co-funded by NSF and EPA, will investigate the environmental risks of nanotechnology. Researchers at UCSB's CNS-UCSB and UC CEIN will collaborate on risk perception studies, comparative analyses of risk communication, and more.
A study by Cardiff University scientists has revealed that common earthworms in the UK are composed of multiple distinct species, each with unique roles in food chains and soil ecology. The discovery, published in Molecular Ecology, sheds new light on the importance of earthworms in agriculture.
Researchers studied 1021 pregnant women who attempted suicide with drugs and found that most congenital abnormalities were associated with psychiatric disorders and lifestyle factors rather than the drugs themselves. The study suggests using self-poisoning data to estimate human teratogenic risks of drugs in pregnancy.
The Center for Environmental Implications of NanoTechnology (CEINT) aims to define the relationship between various nanomaterials and their potential environmental exposure and ecological consequences. Researchers plan to develop a rigorous risk assessment framework, collaborating with policy-makers and society.
Research from the University of Missouri has shown a significant relationship between BPA exposure and cardiovascular disease, type 2 diabetes, and liver enzyme abnormalities. The FDA is urged to take action to reduce human and environmental exposures to BPA due to its adverse health effects.
A new study identified five counties in Oregon with the most meth-linked incidents per capita, including sparsely populated Umatilla County. The analysis found that every lab or dump site was 11.5 times more likely to be in Umatilla County than anywhere else in the state.
Reinnervate has developed a polystyrene foam scaffold to grow cells in 3D, revolutionizing drug testing and saving companies money. The company is now poised for commercial manufacture and global sales after securing significant funding.
Researchers at Queen's University have found a new approach to regulating enzymes involved in blood clotting, potentially leading to novel treatments for heart attacks and strokes. The study targets the enzyme PDE5, which is also used in Viagra, and shows its selective inhibition could prevent platelet activation.
Research suggests that codeine may be unsuitable for all breastfed infants due to rapid metabolism into morphine, which can cause central nervous system depression. Fortunately, removal of exposure leads to dramatic improvement and no long-term adverse effects.
New studies presented at the XVII International AIDS Conference confirm a clear threshold response for DNA damage caused by ethyl methanesulfonate (EMS) in Viracept. The research finds that patients exposed to elevated EMS levels are not at increased risk of cancer, despite levels below this threshold.
A new definition for intermediate syndrome (IMS) resulting from organophosphate poisoning has been proposed based on a study of 78 patients. The researchers found that specific changes in nerve transmission occurred before the development of IMS, suggesting that these changes may be an indicator of future poor outcome.
Researchers at North Carolina State University found that quantum dots can penetrate rat skin if there is an abrasion, providing insight into potential workplace concerns. The study shows that even minor cuts or scratches could allow these nanoparticles to penetrate deep into the viable dermal layer and potentially reach the bloodstream.
Dr. Fischman has made significant contributions to the evaluation of drugs used to prevent and treat dental caries and periodontal diseases through his design and analysis of clinical trials and publication of guidelines for colleagues. His research studies have evaluated over 100 chemical agents, providing benchmarks for clinical trials.
The University of North Carolina at Chapel Hill School of Public Health has received a $3.4 million grant to develop the Carolina Center for Computational Toxicology, which aims to advance computational toxicology by developing new methods and tools.
Two alternative test methods, the bovine corneal opacity and permeability (BCOP) assay and the isolated chicken eye (ICE) assay, have been accepted for ocular safety testing. These non-animal tests can identify substances that may cause permanent or severe eye damage, reducing animal use in this area.
Researchers have developed a method to classify liver toxins using gene-expression profiling of blood samples, improving the precision of compound classification. The study highlights the importance of 'phenotypic anchoring' in linking gene expression data analysis to traditional measures of toxicology.
Indiana University scientists have identified a cellular signaling system that enables the toxoplasmosis parasite to transform into a cyst form, resisting drugs and the immune system. This discovery could lead to targeted therapies and a preventative vaccine for animals.
A recent study highlights the need for better treatments for malaria in pregnancy, where the use of new medicines is often restricted due to limited clinical data. The authors argue that this 'catch-22' situation can lead to inferior drugs being prescribed, putting pregnant women's lives at risk.
A North Carolina State University study found that examining an insect's 'family tree' can help predict a cousin insect's level of tolerance to pollutants. The research used 21 species of insects from different families to test their sensitivity to cadmium, a toxic metal.
A new study has provided genetic clues for dealing with soil pollution by using a systems toxicology approach to understand the impact of four soil contaminants on earthworm gene expression patterns. The research reveals subtle changes induced by toxic chemicals in earthworms, offering insights into monitoring and remediation of toxins.
Researchers at the University of Pennsylvania's CEET have discovered that polycyclic aromatic hydrocarbons (PAHs) can lead to mutations in critical genes in lung cancer through oxidative stress. PAHs transform into oxygen free radicals, which bind to DNA and cause damage if not repaired.
The EPA dismissed Deborah Rice, a highly respected toxicologist, after the chemical industry complained about her views on deca's health hazards. Herbert Needleman argues that this trend is not new and unique, citing his own dismissal for speaking out on lead poisoning.
Companies like UCB Pharma and CeeTox are using cell-based assays to assess the toxic characteristics of small molecule compounds. This early identification can improve clinical trial results and reduce the time to market.
A new study finds that relying on animal experiments to develop treatments for spinal cord injuries is hindered by significant extrapolation challenges, with only a small percentage of promising agents translating to humans. The review calls for the development of new research techniques to address this issue.
Dr. Watts' research suggests that serotonin may play a role in lowering blood pressure, contradicting previous findings that it causes constriction. She hopes to resolve the 'serotonin puzzle' with her lecture and gather input from fellow physiologists.
Researchers at UT Southwestern Medical Center have been awarded a $6.5 million grant from the National Institute of Allergy and Infectious Diseases to develop a new anti-microbial compound targeting bacterial pathogens such as Salmonella and E. coli. The goal is to combat increasing microbial resistance to antibiotics.
A new rodent study finds exposure to diacetyl, a chemical in artificial butter flavoring, can cause respiratory issues in mice. The research suggests workplace exposure to diacetyl may contribute to the development of obstructive bronchiolitis (OB) in humans.
Scripps Research will develop a compound to treat neurodegeneration in Parkinson's disease using a classical pharmaceutical approach. The goal is to bring the potential treatment to human clinical studies, aiming to have a safe and efficacious compound with sufficient preclinical safety data.
Scientists at Michigan State University have developed a new genetic technique that allows for rapid analysis of E. coli bacteria using single nucleotide polymorphisms (SNPs). This breakthrough enables the identification of specific bacterial groups and their associated toxins, which can help predict disease outbreaks.
Inhalation of diesel exhaust induces stress response in brain activity, altering information processing. Researchers found that even short exposure can cause changes in brain waves, with effects lasting after subjects leave the room.
The NIH and EPA have formed a collaboration to improve the safety testing of chemicals using high-speed screening robots and cells. This new approach aims to generate data more relevant to humans, reduce animal testing, and increase the number of chemicals tested.
Researchers found that boiling water increases BPA release from polycarbonate bottles, with rates increasing 15-55 times faster than at lower temperatures. The study's findings suggest that cumulative environmental exposures may harm human health.
Researchers at University at Buffalo found that Celebrex reduces heart rate and induces arrhythmia by inhibiting potassium channels, which are present in the heart, brain, and other tissues. The study suggests that the drug's mechanism of action may be relevant to its cardiovascular side effects.
Springer Protocols is a laboratory tool that delivers protocols across 15 subject collections, covering various areas of life sciences. The platform contains over 2,000 protocols, with 1,000 being updated annually, providing researchers with easy access to experiment designs, equipment, statistical methods, and troubleshooting standards.
Researchers at ETH Zurich have identified two subtypes of GABA receptors that mediate spinal pain control, opening up new possibilities for targeted pain therapy. This discovery could lead to the development of specific drugs with fewer side effects, making chronic pain treatment more effective.
Researchers found Celecoxib reduces heart rate and increases irregularities, but not through COX-2 inhibition. Drosophila model reveals a direct effect on potassium channels generating heartbeat.
Researchers found that 77% of methadone users with low levels had no significant cardiac abnormalities, while 60% of non-methadone users had identifiable evidence of cardiac disease. The study suggests a link between methadone and sudden cardiac death, potentially necessitating additional safeguards before therapy.
A study by UC Davis researchers found that triclocarban, a common antibacterial chemical, alters hormonal activity in rats and human cells. In male rats, testosterone-dependent organs grew abnormally large after exposure to the chemical.
A new study reveals that individuals with higher body mass index (BMI) experience greater drops in lung function after acute ozone exposure. The research found that underweight individuals have lower ozone-related drops in lung function, while overweight and obese individuals exhibit the greatest declines.
A new study by MIT researchers has found that children of mothers with contaminated water supplies during pregnancy exhibit gene expression changes associated with cancer and other diseases. The team developed a reliable test using 11 genes, offering an alternative to routine blood tests.
A team of Dartmouth Medical School researchers found that low doses of arsenic disrupt the activity of hormone receptors critical in development, highlighting the potential harm of arsenic at levels found in U.S. drinking water. The study's findings provide evidence for mitigating arsenic's impact on human health.
Zebrafish embryos exposed to 11 common pollutants showed distinct gene-expression profiles, allowing researchers to identify individual toxins. The new method offers a potential solution for evaluating developmental toxicity of pharmaceuticals and industrial chemicals.
The National Academies of Sciences report introduces new tools to assess health risks from chemicals, enabling better predictive toxicology and risk assessment. These technologies provide critical information on environmental agent interactions with human genes, helping identify individuals at higher disease risk.
Scientists will create biomarkers for environmental risk factors in human disease, including cigarette smoke and obesity. The research aims to understand the interaction between genes and environment, using wearable sensors and advanced technologies.
A preliminary laboratory study suggests that consuming large amounts of caffeine with acetaminophen can lead to toxic interactions and liver damage. The researchers recommend limiting caffeine intake while taking acetaminophen, particularly for vulnerable groups such as those taking certain medications or excessive alcohol.
The Center for Excellence in Environmental Toxicology at Penn School of Medicine will study biological indicators of exposure to cigarette smoke using a panel of biochemical markers. The goal is to identify people most at risk of tobacco-related disease and potentially inspire them to quit smoking.
A Weill Cornell study finds that nicotine in cigarettes accelerates atherosclerosis, even at low levels, by activating the sympathetic nervous system and increasing heart rate. Mice exposed to low-nicotine cigarettes showed smaller atherosclerotic lesions than those exposed to regular cigarettes.
A comprehensive review of over 500 studies on aspartame found no evidence of cancer, neurological damage, or other adverse effects. The study suggests that aspartame is safe at current levels of consumption and may even aid in weight control and sugar-free diets.
The University of Oregon has received a $1.6 million grant from the Keck Foundation to study biological interactions with nanomaterials. The researchers will investigate potential biological interactions and develop design rules for nanoparticles with enhanced biological properties.
Researchers at UAB found that resveratrol, a compound in red wine, reduces prostate cancer risk by 87% in male mice. The study also showed that resveratrol slows tumor growth in less-serious forms of prostate cancer.
A symposium exploring acrylamide's health effects and ways to reduce its content in food will be held. Experts from around the world will provide new insights into the compound and its biological effects.
A new study found that a compound in broccoli, known as DIM, may help boost the immune system. DIM was shown to increase blood levels of cytokines and stimulate white blood cells in mice, suggesting potential health benefits against infections and cancer.