Articles tagged with Toxins
Researchers have defined the structure of marine toxins and found they interact with actin, a key protein responsible for cellular growth. The toxins can disrupt actin's activity, leading to cancer cell death, offering new hope for targeted cancer treatments.
A study found that the virulent C. difficile strain NAP1/027 is responsible for severe outbreaks in hospitals, producing high levels of toxins A and B. The strain was identified in 67% of hospital-acquired cases and 37% of community-acquired cases.
A study published in Nature Neuroscience reveals that AgRP neurons play a crucial role in regulating eating behavior and body weight. The research found that these neurons are essential for acute regulation of eating, and their destruction leads to anorexia and changes in blood glucose levels.
Researchers found that anthrax's lethal toxin can block neutrophil production of filaments by nearly 60% in just two hours. This paralysis allows the bacteria to move freely in the body, leading to fatal outcomes in inhalation anthrax victims.
Researchers found that prenatal exposure to domoic acid levels below those deemed safe for adults caused lasting behavioral effects and impaired memory in rats. The findings imply that unborn children may be negatively affected by the toxin at levels not causing symptoms in expectant mothers.
The BEADS system detects toxin from environmental samples, then uses antibodies to purify and concentrate the pathogen or toxin for accurate detection. The system has been commercially licensed and can detect multiple pathogens simultaneously.
Researchers at Salk Institute and Harvard Medical School found that anthrax toxin entry occurs under two different pH conditions, depending on the receptor type. This discovery could lead to the development of more effective drugs targeting a single pathway.
A global study found that the ability to discern bitter flavors likely offered a survival advantage by protecting ancient people from poisonous foods. The researchers also discovered that specific genetic variants confer increased sensitivity to toxins and beneficial compounds, with potential implications for human health.
Researchers found that concurrent use of single- and dual-gene Bt plants can put dual-gene plants at risk if single-gene plants are deployed in the same area. Dual-gene plants expressing two insecticidal proteins offer improved resistance to insects, but may be more vulnerable to resistance development.
A new study found that low-income, African-American communities in Maryland are more likely to be exposed to high levels of air pollutants, increasing their cancer risk. The study suggests that targeted emissions-reduction policies can help mitigate this disparity and improve health outcomes for these communities.
Researchers found environmental toxins can alter animal genes, causing heritable diseases in multiple generations. The study suggests a role for environmental impacts in evolution, potentially impacting diseases like breast cancer and prostate disease.
A simple packaged intervention improved storage of groundnuts among farmers in Guinea, reducing aflatoxin levels by over half. The intervention significantly lowered disease burden related to the potent environmental toxin, which is associated with increased risk of liver cancer and impaired child growth.
Researchers measured air toxin levels in a tollbooth and found that the ventilation system provided relatively low and constant concentrations of pollutants, protecting workers during rush-hour traffic. However, chlorinated VOCs used in cleaning products were present at higher concentrations indoors than outdoors.
A team of scientists found that a small mutation in softshell clams' nerve tissue prevents paralytic shellfish toxins from binding, causing the clams to accumulate high levels of toxins. This resistance allows them to survive harmful algal blooms and increase the risk of paralytic shellfish poisoning in humans.
A mutation in clams has been discovered that protects them against paralytic shellfish poisoning, but increases the risk to humans who consume them. The mutation enables contaminated clams to survive in areas with toxic algae, highlighting a need for new safety protocols.
Biologists find that garter snake nerve cell proteins undergo rapid evolutionary changes to detoxify the newt's potent toxin TTX, enabling the snakes to survive. This molecular arms race allows the garter snakes to evade their toxic prey.
Researchers discovered that certain marine red seaweeds can efficiently neutralize organic pollutants, including polycyclic aromatic hydrocarbons. The process, known as phycoremediation, shows promise for developing new bioremediation technologies to remove contaminants from the marine environment.
Researchers at North Carolina State University found that some strains of Pfiesteria are toxic and can kill fish with minimal exposure. They also developed more sensitive tests to detect the toxin, which is produced by Pfiesteria cells even without bacteria.
A novel sensor has been developed to measure tiny changes in cell volume, providing real-time results for antibiotic sensitivity testing. The technology, known as 'cell volume cytometry,' is highly sensitive and can detect changes in cell dimensions never seen before in living cells.
Researchers have discovered the molecular structure of a glycolipid receptor to which Bt toxin binds, potentially leading to more effective pesticides and new treatments for parasitic infections. The study's findings could also help prevent insect resistance to Bt toxins.
Researchers at Vanderbilt University and Pria Diagnostics LLC collaborate to develop a portable device that can quickly detect infectious diseases and biological agents. The device, which aims to produce its first portable HIV monitor within two years, utilizes microfluidic devices and micro-optical fluorescence spectroscopy.
Enterococcus faecalis uses a Sonar-like system to detect human blood cells and produce a toxin in response, providing a potential mechanism for developing new antibiotic treatments. This discovery could also be adapted to help the aging population cope with vision loss.
Researchers found that combined dietary olestra and caloric restriction increased the rate of excretion of a test toxin by 30-fold and reduced its distribution into the brain by 50%. The study also showed that weight loss and regain resulted in changes to the concentration of toxins in adipose tissue and liver.
A new method has been developed to remove MTBE, a carcinogenic pollutant, from water using a titanium dioxide catalyst. The catalyst causes MTBE to react with dissolved oxygen, producing harmless carbon dioxide.
Researchers have developed a vaccine that targets the anthrax capsule, providing improved protection against experimental infection. The study showed that mice vaccinated with the capsule vaccine survived challenge doses of spores, demonstrating the effectiveness of this new approach.
Researchers at UC Davis have developed multipurpose nanocables that can detect the quantity of toxins in a sample, allowing for more accurate measurements. These nanocables also enable the creation of large surface area arrays, which could be used to efficiently capture sunlight and improve solar cell efficiency.
Researchers found that using plants with moderately effective genetic modifications in a buffer zone around main crops can play a major role in insect control. This approach delays the development of resistant insects by creating negative cross-resistance, effectively eliminating them from invading the main crop.
A study by St. Jude Children's Research Hospital found that sustained exercise can prevent cell death in the substantia nigra of adult mice treated with a toxin called MPTP, which mimics Parkinson's disease. Exercise increased production of glial-derived neurotrophic factor (GDNF), protecting nerves against damage caused by free radicals.
The American Academy of Neurology discusses the growing field of cosmetic neurology, which aims to enhance normal abilities through medical therapies. Experts weigh the benefits and risks of neurological enhancements, including concerns about safety, equality of access, and coercion to compete at a high level.
A novel protein vaccine candidate has demonstrated full protection against a lethal aerosol challenge with ricin toxin in mice, offering a promising solution to bioterrorism threats. The vaccine, RTA 1-33/44-198, was designed using molecular modeling and protein engineering techniques.
Researchers solved the puzzle of the molecular structure of the protective antigen protein and CMG2 bound together, providing clearer targets for shutting down the anthrax toxin's entry into cells. This detailed image also points to a potential new tumor treatment using a genetically modified anthrax toxin.
Researchers have found that proteasome inhibitors can cause a model of Parkinson's disease in rats, mirroring symptoms such as slowness of movement and tremors. The study suggests that environmental factors, including exposure to toxins, may contribute to the development of Parkinson's.
Researchers found that biotech corn carrying a gene for insect protection can pollinate non-Bt corn plants up to 100 feet away, posing a risk of contaminating refuge areas. The discovery suggests measures are needed to reduce pollen spread from Bt corn to corn fields requiring refuge zones.
Researchers at Wake Forest University Baptist have developed a non-surgical treatment for cerebral palsy patients using Botox injections. The treatment has shown significant improvement in functional ability and muscle relaxation, allowing patients to perform daily activities with greater ease.
A study by the American Academy of Neurology found that botulinum toxin injections significantly improved musicians' playing ability and performance, with 69% reporting a positive response. The treatment was particularly effective for highly accomplished performing artists, who often face devastating career-ending symptoms.
Stanford University researchers use video cameras to capture daily activities of healthy children in various environments. By analyzing these recordings, they create detailed models of how children ingest or become exposed to substances like lead and pesticides. This approach allows for the collection of tens of thousands of data point...
Researchers have found that a clinically approved drug for chronic hepatitis B can block the action of an anthrax toxin. Adefovir dipivoxil effectively reduces the effects of edema factor, one of two deadly toxins produced by anthrax, at non-toxic doses.
Botulinum toxin type A treatment significantly reduces sweat production and improves quality of life for hyperhidrosis patients. The Hyperhidrosis Severity Scale is a new tool to identify and assess treatment results.
Rensselaer Polytechnic Institute researcher is developing a compound to neutralize anthrax toxin, which could be injected into healthy humans as a preventive measure or given to infected individuals as an antidote. The goal is to develop a safe and effective treatment for bioterrorist anthrax attacks.
Researchers have discovered a common pharmacophore that can be used to develop more potent and selective lethal factor inhibitors. This breakthrough holds promise for developing new anthrax therapies, particularly in cases where antibiotics are not effective.
Researchers at Indiana University found that farmed Atlantic salmon contain significantly higher levels of toxins, including PCBs and dioxins, than wild Pacific salmon. These toxins are linked to human health concerns and may pose a risk to people who eat salmon regularly.
Researchers at UCSD have identified a protein molecule targeted by anthrax toxin that prevents cytokine production, allowing bacteria to evade the immune system. By understanding this mechanism, scientists may develop new drugs to protect against anthrax infections.
Researchers have identified a potential inhibitor of anthrax toxin, which could lead to more effective therapy for the deadly agent. The study's findings suggest that combining antibiotics and protease inhibitor drugs may provide a cost-effective solution for treating inhalational anthrax.
Researchers at Harvard Medical School have identified an anthrax toxin inhibitor that could lead to more effective therapy for the deadly agent. The discovery, made using a 'mixture-based peptide library' technique, reveals new approaches to design better inhibitors that might prove effective in clinical use.
Researchers found no evidence of persistent cytokine increase or link between cytokines and anthrax toxin effects, contradicting earlier beliefs. The study suggests that current efforts to design cytokine-suppressing drugs may be misguided.
A recent study found that anthrax lethal toxin causes liver failure through hypoxia-induced toxicity, rather than septic shock. This discovery challenges current treatment approaches and emphasizes the importance of understanding unique pathophysiology in anthrax patients.
A new anthrax inhibitor being researched by Rensselaer Polytechnic Institute may be able to prevent the toxin from binding to human cells, thereby hindering its damage. This breakthrough could enable successful treatment of anthrax at later stages and save more lives.
Researchers at the University of Wisconsin-Madison have discovered a second anthrax toxin receptor, revealing that the toxin's entry into cells is more complicated than previously thought. This finding provides pharmaceutical companies with new ammunition to attack anthrax disease and offers potential therapeutic applications.
A study of 250 children found that botulinum toxin significantly improved symptoms of muscle spasticity, enabling them to perform daily tasks such as feeding and writing for the first time. Long-term use of the drug showed minimal adverse effects and maintained effectiveness over two years or more.
The AAN Annual Meeting explores the historical use of biological toxins in warfare and global terrorism, with a focus on developing bioterrorism response plans for local hospitals and clinics. Participants will learn emergency medical management and current research on neuroprotective agents against chemical warfare.
Toxin-resistant insects in Bt transgenic crops develop faster and have greater pupal weight, suggesting genetic benefits. Biochemical studies are needed to confirm potential nutritional effects of Cry toxins on resistant insects.
Researchers have discovered that Bt toxins can kill a range of parasitic nematode species, including those affecting humans, animals, and crops. The findings suggest the potential for developing an inexpensive and environmentally safe means of controlling parasitic roundworms.
A newly discovered cellular process allows cells to initiate a series of events that halt the growth of damaged cells and help them survive. The activation of ATM, an enzyme that responds to DNA damage, enables cells to better respond to cancer-causing mutations and environmental toxins.
Researchers used palytoxin to pry open the sodium/potassium pump's nature, revealing it as a more elaborate version of an ion channel. The study may pave the way for better treatments for hypertension and heart failure.
Scientists at Michigan State University have identified a new bacterium that can break down the toxic chemical TCA, which contaminates groundwater and erodes the ozone layer. The discovery holds promise for cleaning up contaminated sites in the US, as the microbe can convert TCA into less toxic substances.
A new study confirms Pfiesteria cultures can produce a toxic compound, contradicting previous claims that it was non-toxic. The research used standardized methods to test the strain, showing it could kill fish at low cell densities, and detected a potent water-soluble toxin in both pure culture and with algae.
Scientists are exploring how molecular genetics can improve classical biological control by finding natural enemies well adapted to target invasive pests. Genetically modified crops with toxins like Bt may also be compatible with natural enemies, offering a new approach to controlling unwanted insect pests.
A recent study found that individuals who were always slim or participated in varsity athletics had a higher risk of developing ALS and other motor neuron diseases. The researchers suggest that vigorous physical activity may contribute to the development of these conditions, but further studies are needed to confirm this association.
A recent study published in the New England Journal of Medicine found that botulinum toxin type A injections significantly improved muscle tone and function in patients with wrist and finger spasticity after a stroke. The treatment showed sustained effects for at least 12 weeks, with some cases lasting up to 24 weeks.
A new drug has been developed to combat botulism by potently neutralizing the toxin. The antibody cocktail is capable of binding to a different part of the toxin molecule, blocking more of the toxin surface than single antibodies. This approach could be scaled up for mass production and stockpiling to prevent or treat botulism.