Articles tagged with Toxins
Researchers from the University of Copenhagen have identified marine bacteria that can effectively inhibit the ability of staphylococci to form toxins and camouflage proteins. These compounds, known as antivirulence therapy, may offer a new solution for treating resistant bacterial infections.
Researchers at the University of Iowa have developed a new vaccine that targets staph toxins, providing almost complete protection against staph infections. The vaccine was tested in an animal model and found to be effective even against high doses of bacteria.
Significant declines in European corn borer populations suggest that expensive, insecticidal toxin-resistant corn hybrids are not needed. Non-Bt hybrid seeds can be a more cost-effective option for growers to reduce potential losses.
A new study by Uppsala University reveals a strong association between high levels of perfluorinated compounds and the development of diabetes. High levels of perfluorononanoic acid (PFNA) and perfluorooctanoic acid (PFOA) were found to be linked to increased diabetes risk in elderly men and women.
Researchers at the Max Planck Institute discovered that banana plants accumulate specific toxins in infected root tissues to resist parasitic nematode Radopholus similis. The localized accumulation of defense substances inhibits further propagation of the pest, leading to its death.
A new laboratory rearing method has been developed to study the western bean cutworm's susceptibility to Bacillus thuringiensis toxins. This allows for the evaluation of toxin efficacy and potential resistance development.
A study by University of Montreal researcher Maryse Bouchard found a significant association between PCB levels and cognitive abilities among individuals aged 70-84 years. Higher exposure to PCBs in older age groups led to greater diminution in cognition, particularly in women.
Researchers discovered that anthrax toxin can hide out in human cells for days, avoiding detection by the immune system and cellular machinery. The findings explain why antibiotics are often ineffective against anthrax infections, making it a lingering threat.
The invasive zebra mussel is unaffected by blue-green algae toxins, which may be harming native Unio mussels. This resilience allows the zebra mussel to outcompete and dominate freshwater ecosystems, posing significant costs to industries.
Researchers at the University of California, San Diego, have identified a biochemical mechanism that makes cholera toxin so deadly. By weakening cell junctions and increasing sodium ion flow, the toxin causes severe diarrhea. The study's findings could guide the development of new therapies against cholera and other intestinal disorders.
Research reveals that contaminated bivalve molluscs contain toxins at higher levels than the surrounding environment, posing a risk to human health.
Researchers have identified the cells targeted by anthrax toxins, which can cause illness and death. Lethal toxin targets heart cells and muscle cells surrounding blood vessels, while edema toxin targets liver cells.
Researchers at the University of Texas at Dallas have discovered that Bacillus thuringiensis toxin selectively kills malaria-carrying mosquitoes by binding to the BT-R3 receptor. This finding opens up new avenues for designing customized proteins and peptides to combat mosquito-borne diseases, including malaria.
A new hypothesis explains how anthrax toxins escape the endosome, potentially leading to a more effective cure. The NIST/USAMRIID team suggests that complexes of LF or EF bound to PA are active toxins inside cells.
A recent study found that pregnant Hispanic women in California consume high levels of toxins such as methylmercury from tuna and PCBs from farmed salmon, which can cause birth defects and developmental delays. The researchers also highlighted the dangers of tap water and caffeine consumption during pregnancy.
The study reveals that Salmonella typhi's powerful typhoid toxin is responsible for the devastating symptoms of typhoid fever. The discovery could lead to the development of effective vaccines and therapeutics targeting this toxin, offering hope for saving millions of lives.
Research reveals that E. coli strains producing Shiga toxin persist longer in lake water than their non-toxin-producing counterparts, posing a health risk to swimmers.
Researchers have developed a non-invasive method to detect acrolein levels in people with spinal cord injuries and multiple sclerosis, offering potential relief from symptoms. The test measures N-acetyl-S-3-Hydroxypropylcysteine, a metabolite of acrolein, which is stable in urine.
Researchers have characterized the Bacillus thuringiensis Cry4B toxin as highly toxic against Anopheles gambiae, a principal vector of malaria. The study demonstrates that Cry4B can kill even Permethrin-resistant mosquito larvae, providing an environmentally safe approach to controlling malaria.
Researchers propose keystone molecules as a key factor in structuring ecosystems. These molecules have powerful effects on bacteria, seabirds, fishes, and other species. Keystone molecules also influence predator-prey relationships and can be crucial for conservation efforts.
Researchers used Botox to discover a novel role for SNARE molecules in nerve cell signaling, linking fusion and retrieval processes. The findings have broad implications for understanding neuronal communication and diseases, including epilepsy and schizophrenia.
Researchers developed a method to deliver tumor-killing enzymes using protein packages that protect the enzyme until it reaches the cell's interior. The addition of ubiquitin enhanced the enzyme's persistence and potency without hindering its delivery, also reducing toxicity to non-tumor tissues.
Researchers from the Woods Hole Oceanographic Institution and NOAA's ECOHAB program have developed a testing protocol that allows fishermen to safely harvest surf clams and ocean quahogs on Georges Bank. The shellfish industry can now produce up to 1 million bushels of product annually, valued at $10-15 million.
Lindsey Michelle Brier, a University of Houston math sciences major, has been awarded the prestigious Goldwater Scholarship for her research in pharmaceutical chemistry. She plans to pursue a Ph.D. in medicinal chemistry and teach at the university level.
A new study by University of Arizona entomologists reveals that the pyramid strategy for genetically modified crops may not be as durable as previously assumed. The research found that critical assumptions underlying the strategy do not always apply, and that some degree of cross-resistance between toxins can reduce its effectiveness.
Researchers discovered that certain lactobacillus bacteria can dampen the production of toxic shock syndrome toxin 1 in the vagina. This finding has implications for understanding and treating vaginal infections, emphasizing the need for improved diagnostic tools and probiotic management strategies.
Assistant Professor Hyeok Choi's research aims to develop a sensor system that can detect biological toxins wirelessly, providing real-time data for early warning systems. The system will be deployed in areas with high concentrations of harmful algal blooms, enabling water providers to take action.
A new study finds that bacteria in the large intestine can deconjugate masked mycotoxins, releasing toxic forms of deoxynivalenol and zearalenone. The findings suggest that these toxins should be considered when evaluating population exposure.
NIH researchers discovered a critical transport system in Staphylococcus aureus that produces deadly toxins, paving the way for new antibiotic treatments. The system, called Pmt, is thought to play a similar role in other staphylococci, such as S. epidermidis.
Exposure to environmental toxins can cause chronic health problems like respiratory, endocrine, reproductive, and neuropsychiatric disorders in children. Unique risk factors include their small size, developmental stage, and habit of putting things in their mouths.
Researchers at USC's Keck School of Medicine found that liver mitochondria in mice improve and increase after chronic alcohol feeding, suggesting a possible mechanism for liver damage. The study's findings could help pinpoint targets for therapy if observed in human mitochondria.
A study published in Environmental Health found that family members and preschool children are at high risk for exposure to toxic compounds such as arsenic, pesticides, and acrylamide. The researchers suggest dietary modifications can mitigate risk, including eating organic produce and limiting consumption of animal meat and fats.
Sourav Saha's research in the Journal of the American Chemical Society has led to the development of a compound that can strip electrons from toxic fluoride, producing tangible benefits for toxin detection and removal. This innovation has far-reaching potential applications in various fields, including the creation of new plastics and ...
A new X-ray study reveals that persister cells are regulated by toxins produced by the bacteria themselves, allowing them to enter a dormant state. This understanding can lead to the development of treatments that block toxin function and production, potentially improving outcomes in life-threatening diseases.
Researchers at Case Western Reserve University have developed novel antivirulence drugs that block toxin production in bacteria, rendering them harmless. The discovery has the potential to combat antibiotic-resistant infections like MRSA and strep.
Researchers have identified genes that can be used to select low-cadmium accumulating crop varieties, offering a potential solution to reducing toxic levels in food. By understanding the mechanisms of Cd uptake in plants, scientists aim to develop targeted breeding strategies for crops like rice, wheat, and potatoes.
Microcystins are present in every Canadian lake, posing health risks to humans and wildlife. The study found that water quality is most at risk in lakes with high microcystin concentrations, which are linked to low nitrogen-to-phosphorus ratios.
A study by Cornell University researchers found that same molecular changes confer resistance in multiple insect species across four orders, suggesting a high level of evolutionary repeatability
The Lancet article highlights the complex mix of medical issues among Paralympic athletes, including injuries from prosthetic technologies and performance enhancement practices. The authors emphasize the need for increased awareness, training, and research to address these challenges and ensure proper healthcare provision.
A study published in Neurology found that botulinum toxin injections significantly improved tremor severity and writing/drawing abilities in people with multiple sclerosis. The treatment also showed promise in reducing muscle weakness after treatment.
A new study reveals that southern resident killer whales in the Pacific Northwest are more stressed when there is a scarcity of Chinook salmon to eat. Hormone levels show that the whales thrive when they arrive in the Salish Sea in late spring and have access to Fraser River Chinook, which helps them build up their fat reserves.
Researchers developed a screening tool to predict microcystin levels in lakes prone to blue-green algal blooms. The tool uses phycocyanin measurements and water transparency to provide a quick and affordable assessment of the toxin's presence.
To slow resistance of western corn rootworm beetles to genetically protected crops, much larger 'refuge' acreages of conventional crops have to be planted, two experts warn. Increasing refuge requirements can delay pest resistance and sustain the benefits of Bt corn.
Researchers at the University of Alberta found that omega-3 fatty acid DHA in fish prevented toxic buildup in the retina, a common cause of age-related vision loss. The discovery could lead to a therapeutic use for supplementing the diet with DHA.
The US government would benefit from investing more in eliminating socio-environmental risk factors than developing medicines for childhood disabilities. The study cites $76 billion annual disease cost and recommends creating healthy cities like Vancouver to prevent chronic diseases.
A study by the American Society of Nephrology found that hemodiafiltration, a technique to remove additional toxins during dialysis, does not improve patient survival or heart health. However, intense treatments may provide some benefits, particularly for patients who receive higher doses of treatment.
A review of previous studies found that Botox injections are associated with a small to modest benefit for patients with chronic migraine and chronic daily headaches, but not for episodic migraines or tension-type headaches. The treatment was linked to improved frequency of chronic conditions, such as headache reduction from 19.5 to 17.2.
Researchers have developed a method to destroy cancer cells using the death cap mushroom's α-amanitin toxin without harming healthy cells. The toxin is linked to an antibody that targets a protein on cancer cells, inhibiting tumor growth and causing regression in mice.
A new study by the University of Leicester has demonstrated that botulinum toxin is an effective treatment for overactive bladder, providing relief from symptoms such as urinary incontinence and urgency. The study found that 4 in 10 women became completely continent again after six weeks and a third remained continent after six months.
Researchers found that variation in the level of expression of a gene called CMG2 affects the success of the anthrax toxin in gaining entry into human cells. The study highlights the importance of host genetics in determining individual susceptibility to pathogens like anthrax, HIV, and malaria.
Scientists have discovered that stimulating brain hormones may help prevent a deadly second wave of death in patients with pneumonia. The research found that an agonist mimics the action of growth hormone-releasing hormone, which protects the air sacs and capillaries from fluid and cell damage.
A new company formed around Michigan State University nanotechnology aims to detect deadly pathogens and toxins with handheld biosensors. The technology utilizes novel nanoparticles developed by MSU professor Evangelyn Alocilja, enabling rapid detection in the field without significant training.
Researchers at Carnegie Mellon University have discovered that manganese completely protects against Shiga toxicosis in animal models. The findings suggest that manganese could be a promising treatment for neutralizing the effects of Shiga toxin in humans, offering an affordable solution to this deadly infection.
Researchers discovered a biological pathway that increases the level of chemokine SDF-1, which stimulates cells to move and migrate. The study found that higher levels of this protein can predict who is most likely to develop HUS, allowing for closer monitoring.
Researchers at the University of Calgary have isolated biofilms that can detoxify tailings water by removing toxins and metals. These microorganisms are highly tolerant to stress associated with pollutants, making them a promising solution for cleaning oilsands-related water.
A toxin produced by Mycoplasma pneumoniae has been found to initiate and intensify asthma and other allergic airway diseases in humans, animals, and patients. The discovery is supported by a $11.5 million grant and provides new insights into the role of chronic infectious states in lung disease.
Researchers at Purdue University and USDA develop method to test toxins on Hessian fly larvae, finding potential solution to failing genetic resistance in wheat. They discovered that snowdrop lectin disrupts digestive function in Hessian flies, slowing their development.
Scientists re-engineered botulism toxins to target non-nerve cells, blocking inflammation-linked protein release. This could expand treatment options for chronic inflammatory diseases like rheumatoid arthritis and asthma, reducing risks associated with nerve cell disruption.
An international team of scientists discovered how a bacterial pathogen kills cells by preventing protein synthesis, paving the way for novel therapies to combat melioidosis. The study, led by the University of Sheffield, used intense X-rays to solve the structure of a protein from Burkholderia pseudomallei.
Scientists have created a fast and reliable test to detect ciguatoxin, the primary cause of ciguatera food poisoning. The new test uses standard laboratory instruments and has been proven effective in identifying 16 different forms of the toxin in fish from the Pacific Ocean.