Articles tagged with Neurotoxins
A new study published in Nature Communications finds that a protein called saxiphilin can neutralize the potent neurotoxin saxitoxin, preventing and even reversing paralytic shellfish poisoning. The discovery could have important public health implications as saxitoxin accumulates in shellfish and causes poisoning when consumed.
A newly published paper reveals that Karenia cristata, the source of neurotoxins in a devastating South Australian algal bloom, is the most toxic species ever studied. The bloom caused mass mortality of marine animals and has taken an immense environmental toll on the region.
A study by Professor Bryan Fry and Sam Campbell from the University of Queensland found that scorpion venom activates major clotting factors in human blood, particularly Factors VII and X. The research also identified small-molecule metalloprotease inhibitors that can neutralize the procoagulant effect.
Researchers found a significant decrease in lead concentrations in hair samples from Utahns, spanning over 100 years. The study demonstrates the impact of environmental regulations on public health and highlights the importance of protecting against toxic metals like lead.
A new broad-spectrum antivenom developed by DTU researchers covers 17 African snake species and provides better protection against tissue damage, with a lower risk of immune reactions. The antivenom has shown impressive results in laboratory studies and could revolutionize the treatment of venomous snakebites in Africa.
A new study found potentially concerning concentrations of domoic acid in wild sea stars, which could have cascading consequences for marine biodiversity. The researchers also observed behavioral and physiological changes in response to the neurotoxin, raising concerns about its potential impacts on keystone species.
Researchers develop efficient testing procedure to quickly detect neurotoxic effects in humans, closing the gap with traditional animal experiments. Chlorophene is identified as a substance that disrupts learning and memory processes, exhibiting paradoxical excitation, a previously unknown effect.
Australian skinks have developed tiny changes in a muscle receptor that blocks nerve-muscle communication, preventing paralysis and death. This finding could inform the development of novel antivenoms and therapeutic agents to counter neurotoxic venoms.
Researchers found that sulfur runoff can dramatically increase methylmercury concentrations in fish up to 10 million times greater than the waters they lived in. This poses a significant risk to human health and wildlife due to methylmercury's neurotoxic effects.
Scientists have developed the most broadly effective antivenom to date, neutralizing the neurotoxins of 19 deadly snakes including black mambas and king cobras. The antivenom combines protective antibodies and a small molecule inhibitor, offering a potential universal solution for snakebite victims.
Researchers at Cornell University have developed a cost-effective way to track atmospheric mercury using wild fig tree rings in the Peruvian Amazon. This method offers a potential solution for understanding mercury spread and impact on ecosystems.
Researchers at the University of Münster deciphered the structure of α-latrotoxin, a potent neurotoxin that interferes with nervous system transmission. The toxin forms calcium-permeable membrane pores, inducing muscle contractions and spasms.
A new study on sea anemones sheds light on the complex relationships between predators and prey in marine ecosystems. The research found that a native population of anemones lacking a key neurotoxin exhibited weakened defensive abilities, while its presence attracted natural predators of grass shrimp.
Scientists at Indian Institute of Science have developed a synthetic human antibody that can neutralise a potent neurotoxin produced by highly toxic snakes. The new venom-neutralising antibody was created using an approach adapted from HIV and COVID-19 antibody screening, and shows efficacy nearly 15 times that of conventional antiveno...
PSI researchers develop antibody-like proteins that accelerate Botox's effects on nerve signals, suggesting faster pain relief. The discovery opens new options for therapeutic use of botulinum toxin A1 in treating conditions like cramping muscles and faulty nerve signals.
Researchers found that female Taricha newts produce higher levels of tetrodotoxin, a deadly neurotoxin, than males. This discovery suggests the toxin may serve as a signal for mate selection and survival.
Researchers at Shimane University have found a way to prolong the therapeutic effects of botulinum toxin-A by blocking the insulin-like growth factor 1 receptor. This breakthrough could lead to reduced frequency and cost of injections, improving patient outcomes and convenience.
Research from Harvard John A. Paulson School of Engineering and Applied Sciences estimates that humans have increased atmospheric mercury levels sevenfold, with a pre-anthropogenic baseline of around 580 megagrams. Human emissions from coal-fired power plants and waste-incineration are responsible for the majority of this increase.
Researchers discovered a probiotic that can convert toxic mercury into less harmful forms, reducing neurological damage and improving iron absorption. The probiotic uses genes from a resistant bacteria to detoxify methylmercury, a neurotoxin found in fish-based diets.
Researchers have discovered how Botox, a deadly neurotoxin, enters brain cells, allowing for potential therapeutic targets to be identified. The study, published in the EMBO Journal, reveals that Botox hijacks a complex of receptors to interrupt communication between nerves and muscle cells, causing paralysis.
The global biogeochemical mercury cycle is closely tied to international trade routes, with emissions primarily linked to artisanal gold mining and smelting. Strategies to mitigate mercury exposure include production-side controls and consumption taxes to influence consumer behavior.
Researchers from UCI have discovered the first crystal structures of botulinum neurotoxin E, revealing a novel mechanism for its recognition of human receptors. This finding may lead to the development of new BoNT/E variants with unique pharmacological and therapeutic features.
Two new species of poisonous birds have been discovered in New Guinea's rainforest, containing a neurotoxin similar to that found in South American poison dart frogs. Genetic changes in these bird species allow them to tolerate and store the toxin in their feathers, potentially serving as a defensive mechanism.
Researchers developed a new prototype treatment using a human antibody that neutralizes neurotoxins from African and Asian elapid snakes, with potential for broader cross-reactivity. The treatment showed promising results in preventing death from venom envenoming in mice.
Researchers at Nagoya University discovered that grass puffer fish use a non-toxic version of their deadly toxin, TDT, to attract mates and warn off predators. The study found that TDT serves as an odorant, activating specific olfactory sensory cells in the fish's brain.
Research led by Drs. Yuhai Zhao and Walter J Lukiw reports a pathway from the gut to the brain that contributes to Alzheimer's disease development. Adequate dietary fiber intake can prevent this process. The study suggests a potential means to modify the abundance of microbes in the microbiome.
Researchers have discovered that the FDA-approved drug 3,4-diaminopyridine (3,4-DAP) can reverse botulism symptoms in pre-clinical models. Continuous infusion of the drug produces rapid and sustained therapeutic benefits, supporting its immediate clinical use for botulism patients.
Researchers discovered and validated the enzymes responsible for producing guanitoxin, a potent neurotoxin associated with freshwater harmful algal blooms. The study revealed that guanitoxin-producing cyanobacteria are more prevalent than known in the US, enabling new molecular diagnostic testing to protect public health.
A new meta-analysis of available literature on ALS disease has identified a group of seven environmental chemicals as correlates with increased risk of developing ALS. Exposure to these chemicals, including BMAA and heavy metals, may be contributing to the disease burden in certain regions.
Scientists have uncovered the structure of a Black Widow neurotoxin using cryo-electron microscopy, which could lead to the development of an antidote and new pesticides. The findings are a major breakthrough in understanding the molecular mechanism of the toxin.
Researchers found that eastern blue-tongue and shingleback lizards develop a serum factor in their blood to prevent clotting from red-bellied black snake venom. Monitor lizards lack this resistance due to their armoured scales, which protect them from venom absorption.
A new cyanobacterial neurotoxin called aetokthonotoxin has been identified as the cause of vacuolar myelinopathy in waterbirds and raptors, with exposure to bromide-enriched invasive water plants playing a key role. Bioaccumulation of the toxin affects not only the birds that eat the contaminated plants but also their predators.
Researchers at the University of Queensland have found a new family of toxins, gympietides, in the Gympie-Gympie stinging tree that can cause long-lasting pain similar to spider and cone snail venom. The toxins permanently change sodium channels in sensory neurons, suggesting potential for developing new painkillers.
Researchers discovered a link between Parkinson's and reduced activity of a gene targeted by blue-green algae neurotoxin. This finding highlights the potential role of environmental toxins in neurodegenerative diseases like Parkinson's.
Researchers developed bifunctional nanobodies that neutralize multiple types of botulinum neurotoxins, including Botox, with greater potency than single-nanobody approaches. The findings address urgent need for antitoxins against Tier 1 select agents.
Researchers have developed a new technique to test paralytic neurotoxins without euthanizing animals, using optical probes and analyzing changes in light reflected back. This breakthrough reduces animal use in research testing while having significant biomedical implications for treating diseases and conditions.
A Stanford-led study reveals that turmeric is sometimes adulterated with lead-laced chemical compounds in Bangladesh, leading to elevated blood lead levels among consumers. The researchers aim to shift consumer behaviors, reduce incentives for the practice and develop business opportunities to promote lead-free turmeric.
Researchers have discovered a neurotoxin, PMP1, that selectively targets malaria mosquitos, demonstrating a broader host spectrum than previously believed. This finding offers an innovative and environmentally friendly approach to reduce malaria prevalence.
Researchers at UC Riverside have identified a neurotoxin produced by bacteria that kills Anopheles mosquitoes, which spread malaria. The discovery could lead to the development of a chemical-free insecticide and reduce the risk of resistance.
Researchers at the University of Bern studied spider venom from the Cupiennius salei species, discovering a dual prey-inactivation strategy involving neurotoxins and metabolic pathways. This complex effect mechanism attacks an organism's muscles, nervous system, and internal homeostasis, causing paralysis, pain, and inflammation.
Scientists have discovered a compound that strongly inhibits botulinum neurotoxin, potentially reversing paralysis caused by the toxin. Nitrophenyl psoralen, identified through high-throughput screening of natural compounds, shows powerful anti-botulinum toxin activity with low toxicity to human cells.
Researchers have identified a novel botulinum neurotoxin, BoNT/X, with potential to treat various medical conditions, including muscle spasms and chronic migraine. The discovery enables the development of diagnostic methods and treatments, facilitating countermeasures against exposure to toxic amounts of the substance.
Researchers from Kumamoto University developed a novel electrochemical sensing technique for detecting neurotoxic agents, including Nereistoxin, which showed high sensitivity and specificity. The method uses gold electrodes with adsorbed NRT layers, achieving detection limits of 1-25 micro-grams per milliliter of human serum.
Researchers at Stockholm University have determined the three-dimensional structure of the entire tetanus toxin protein, revealing its exact atomic positions. The discovery sheds light on how the toxin interacts with nerve cells and causes life-threatening muscle cramps and spasms.
A simple copper complex has been found to shut down the deadly botulinum neurotoxin, which causes paralysis and death. The discovery was made by scientists at Scripps Research Institute using a triazole compound provided by Nobel laureate K. Barry Sharpless.
BoNT shows evidence of effectiveness in treating conditions like facial wrinkles, hand tremors, palmar hyperhidrosis, and neuropathic pain, as well as facial nerve palsy and dystonias. The review highlights the benefits of BoNT for minimally invasive treatment of facial aging problems.
Researchers at UCSB have mapped the network of circadian neurons that communicate to re-establish synchronization, finding a 'small-world structure' with hubs and short paths for communication. This discovery sheds light on how the suprachiasmatic nucleus (SCN) regulates essential functions like sleep and hormone release.
Researchers deciphered the atomic-scale structure of a botulism toxin-bound protein, revealing how it stays intact in acidic conditions and disassembles in neutral pH environments. This knowledge may help develop new vaccines or treatments targeting the deadly neurotoxin.
Researchers have discovered that spider and centipede venom originated from an insulin-like hormone, with similar molecular shapes between the toxins and the hormone. This finding has potential applications in developing new pharmaceuticals and bioinsecticides, as well as solving agricultural and medical problems.
Researchers at University of Queensland found Botox toxin travels through nerves to central nervous system, where it can intoxicate neighboring cells. This discovery has implications for disease treatments and raises questions about the toxin's long-term effects.
UCL scientists have discovered a new pathway to deliver therapies to the nervous system, offering a potential treatment for tetanus and neurological disorders such as motor neuron disease. By blocking the entry of tetanus neurotoxin into nerve cells, researchers hope to develop targeted treatments with fewer side effects.
A new Northwestern University study analyzed over 20,000 minimally invasive cosmetic procedures and found no risk of serious adverse events. The study suggests that these procedures are exceedingly safe, with fewer than 1% minor complications, offering a significant cosmetic boost through mixed procedures.
Researchers have made breakthroughs in understanding the interactions between botulinum neurotoxins and cells, paving the way for safer forms of Botox. By designing inhibitors or specific antibodies, scientists hope to prevent toxic interactions and engineer safer toxins for medical and cosmetic use.
Researchers found that acrylamide exposure damages the blood-cerebrospinal fluid barrier and impairs its secretory and transport functions. These changes may underlie acrylamide-induced neurotoxicity in central and peripheral neuropathy.
Researchers have discovered tetrodotoxin, a potent paralysis-inducing neurotoxin, in two species of terrestrial flatworms. The toxin was found to be used during predation to subdue large prey and may also play a role in defense through egg capsules.
Researchers at UCI School of Medicine discovered how botulinum toxin is absorbed into the bloodstream through the intestinal lining. By understanding this process, they can develop new methods to block the toxin and prevent deadly botulism.
Researchers analyzed α-KTx family sequences to identify conserved amino acid sites associated with neurotoxin structure and function. A single genetic deletion event can convert an STS-containing insect defensin into a scorpion-like neurotoxin.
UC Irvine scientists have identified a key molecular gateway for the botulinum neurotoxin, which can be blocked by inhibitor molecules to prevent the toxin from entering the bloodstream. The discovery provides a vital first step toward a pharmaceutical intervention and could lead to preventive treatments for botulism.
Sanford-Burnham researchers discovered the first 3D structure of the botulinum neurotoxin and its protein bodyguard. This reveals a weak spot that can be targeted to develop new therapeutics, including potential treatments for botulism and bioterrorism agents.
Scientists have sequenced the genome of a novel form of Clostridium botulinum, which produces an unusual neurotoxin that poses a similar threat to other strains. The complete genome sequence has been deposited in EMBL/Genbank, providing valuable insights into the organism's structure and potential implications for food safety.