Articles tagged with Venom
A Congolese giant toad has been found to mimic a venomous Gaboon viper in both appearance and behavior, using Batesian mimicry to avoid predators. The researchers observed the toad emitting warning hisses and displaying a bow-like posture, matching its surroundings to effectively deceive predators.
Researchers have identified 10 previously hidden pyridine alkaloids in fire ant venom, which could help explain the severity of bites and potential health complications. These compounds are found in different species of fire ants and even within individual ant castes.
Researchers at Rice University discovered that netting trees to deter birds increases the population of Megalopyge opercularis, also known as asps, which are venomous and can cause severe pain. The study found a 7,300% higher abundance of caterpillars on netted versus non-netted trees.
The study presents the draft genomes of three jellyfish species, revealing venom-related genes and evolutionary mechanisms. The research identified 117 putative venom proteins, including a toxin gene found only in cnidarians, providing insight into the evolution of cnidarian venom.
Researchers found that scorpions adapt their stingers and venom use to minimize costs, with strategies including avoiding venom, using claws or pedipalps, and adjusting sting volume and composition. Scorpions can also tailor venom to a target through on-the-fly adjustments and over weeks of exposure.
Researchers at Stanford University and Mexico isolated two color-changing compounds from scorpion venom that can kill staphylococcus bacteria and drug-resistant tuberculosis. The compounds were synthesized in the lab and verified to be effective against these pathogens.
A study reveals that freshwater stingray toxins vary among individuals of the same species, with young female venom causing more pain than adult male venom. Adult rays' venom is more effective at producing tissue necrosis, a deadly effect for small fish and crustaceans.
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.
Researchers at University of Sydney have discovered an antidote to the deadly Australian box jellyfish sting, blocking necrosis, skin scarring and pain. The medicine was developed using CRISPR genome editing techniques, which identified a pathway in human cells that can be targeted by a known cholesterol-blocking drug.
Researchers have made significant breakthroughs in understanding snake genomes, including the evolution of venom genes, dosage compensation mechanisms, and sex determination systems. The study provides a comprehensive genomic context for these complex biological processes, offering new insights into the unique adaptations of snakes.
Researchers are studying animal venoms to identify molecular targets for diseases such as osteoarthritis, rheumatoid arthritis, cancer, and neurodegenerative diseases. The study found promising antitumoral effects and potential new compounds that can be used as medicines.
A new study reveals significant venom variation among Florida pygmy rattlesnakes, with individual snakes having varying effectiveness against lizard prey. The research suggests that the toxicity of snake venom may be adapted to specific prey species.
Researchers are exploring alternatives to conventional antivenoms, including small molecules like varespladib that inhibit venom enzymes and human monoclonal antibodies to snake venom components.
Researchers at the University of Queensland have discovered a new class of blood pressure-regulating peptides in vampire bat venom that could revolutionize treatments for various medical conditions. The peptides are selective in their mode of action, reducing side effects compared to existing therapies.
Researchers at Clemson University discover Mojave rattlesnakes have a wider distribution of life-threatening venom types than expected. The study reveals a peculiar variability in the species, with local optima favoring different venom types depending on location.
A study comparing 100 venomous snake species found that venoms evolved to be more potent against closely related prey animals. The amount of venom also depends on size and environment, with terrestrial species having the most venom.
Researchers found rutin reduces clotting and protects against snake venom's clotting action, minimizing bleeding and inflammation. Rutin inhibits tissue factor activity, a key player in the clotting process, to prevent secondary complications of viper bites.
Researchers have developed an ointment to counter the effects of brown recluse spider bites, which can cause skin necrosis and renal failure. The trial has started in Brazil with 240 participants, comparing the effects of the ointment with a placebo.
Scientists use venom shapes to identify distinct branches in the scorpion family tree, supporting a new evolutionary relationship. The study reveals that venom shape carries information about its function and has remained relatively unchanged over 300 million years.
Researchers discover plant-based compound rutin reduces bleeding and inflammation caused by snake venom, offers potential co-treatment with antivenom for snakebite patients in countries without access to antivenom. The study's findings indicate a great potential for rutin as an ancillary drug in conjunction with antivenom therapy.
A global update on medically significant scorpions reveals over 100 species across dozens of countries, with key clusters in Asia, Africa, and South America. The study also highlights the need for improved communication between clinicians and scientists to combat misinformation and enhance research.
Researchers found that wasp and bee stingers are softer at the tip than at the base, allowing for easier penetration. The study also showed that the stingers are about seven times more elastic at the tip than at the base, enabling them to penetrate deep while maintaining their structure.
Researchers developed nanoparticles that bind to venom toxins, mitigating local damage and systemic distribution of toxins in mouse experiments. The treatment has the potential to be administered subcutaneously after a bite, offering a new approach to treating snakebites in rural settings.
Researchers analyzed ant venom from a tropical species and identified over 2,800 venom peptides, including 37 full-length peptide precursors called myrmicitoxins. The peptides showed sequence similarities with those produced by other insects, suggesting they evolved from ancestral genes.
A new study found that rainy years lead to a 3.9% spike in snake bites across California's 58 counties, contradicting the notion that drought increases encounters with venomous reptiles. The researchers suspect that rodents, which thrive in rainy conditions, may be the primary driver of this unexpected trend.
A new study reveals insights into venomous species can lead to targeted drug development for human diseases. Potential advances include therapeutic peptides derived from sea anemones and spider toxins.
Researchers mapped Okinawan habu genome to identify venom production genes, potentially leading to novel therapies for cancer and cardiovascular diseases. The venom's hemotoxic properties destroy blood cells and tissues, causing severe pain and permanent damage.
Researchers at Swansea University have identified a new species of venomous snake found only in Australia. The Weipa bandy-bandy, a small black and white banded snake, poses no risk to humans but its venom may hold potential for future drug developments.
Researchers at the University of Liverpool are investigating snake venom compounds to treat microbial keratitis, a serious eye infection. They aim to develop anti-Pseudomonas aeruginosa agents to reduce damage to the cornea and prevent sight loss.
A team of biologists has discovered a new species of venomous snake, the Weipa bandy-bandy, in Australia. The snake's habitat is being threatened by bauxite mining, which may put it at risk of extinction.
A new study by the Institute for Health Metrics and Evaluation identifies communities at risk of dying from snakebites. The analysis reveals regions and nations with limited access to treatment and healthcare, highlighting the need for greater measures to support countries in implementing snakebite prevention and treatment programs.
A new parasitoid wasp species, Clistopyga crassicaudata, has been discovered in the Amazon with an exceptionally large stinger used for both laying eggs and injecting venom. The species belongs to a rare genus specializing in laying eggs into spiders or spider egg-sacs.
Researchers have identified a disproportionate number of sialic acid-containing glycans in lancehead viper venom, which may aid in venom solubility and increase toxin half-life. This discovery could lead to the development of more effective antivenom treatments for snake envenoming.
A team of researchers at LSTM has developed a new approach to treating snakebite using antivenom produced from a different species than the one that caused the bite. The study, published in Communications Biology, shows that this approach can be effective in neutralizing certain pathologies caused by venomous snakes.
A new study reveals the existence of a unique defensive mechanism in stonefishes, featuring a 'lachrymal saber' that can deploy from their cheeks. Genetic analysis confirms the close relationship among related species, leading to a revised taxonomy and further insights into the evolutionary history of these deadly fish.
Researchers discovered that sea anemones change their venom multiple times over a lifetime, adapting potency and recipe to suit new predators and aquatic environments. This finding has significant implications for medicine, ecology, and our understanding of Darwinism.
Researchers at Baylor College of Medicine discovered that a scorpion venom component, iberiotoxin, can specifically block the potassium channel in fibroblast-like synoviocytes, reducing rheumatoid arthritis severity. Treatment with iberiotoxin reversed joint damage and inflammation in rat models without inducing side effects.
Researchers isolated two proteins from rattlesnake venom, phospholipase and crotapotin, which showed promising antiviral activity against the hepatitis C virus. These findings offer a new approach to combat this infectious disease.
Scientists have identified a new family of peptides in wasp venom that can control insect behavior, which may also help develop Parkinson's disease treatments. The peptides, called ampulexins, were found to immobilize cockroaches, and further research aims to identify cellular targets for potential treatment applications.
A golden head centipede can subdue a caged mouse in under 30 seconds by injecting an estimated 30 μl of crude venom containing SsTx. The peptide toxin strongly inhibits KCNQ4 channels, controlling pulmonary vascular tone and arterial tension, leading to vasoconstriction and cardiovascular effects.
Researchers have developed a carbon monoxide-iron-based therapy that can inhibit the effects of rattlesnake and other venomous snakebites for up to an hour in animals. The therapy blocks hemotoxic venom enzymes, preventing destruction of blood's ability to clot and reducing the risk of internal bleeding and organ damage.
Researchers sequenced a habu genome and compared it to its sister species, shedding light on the evolution of snake venoms. Genetic drift plays a significant role in the evolution of snake venom, according to the study.
A CCNY-led research team has discovered a new type of organelle, MSEVs, in the venom of a parasitic wasp. These mixed strategy extracellular vesicles have prokaryotic and eukaryotic properties and are involved in killing fruit fly blood cells by invading their immune system.
Researchers at UC Riverside found pallid bats resistant to Arizona bark scorpion venom, with amino acid substitutions in voltage gated sodium ion channels. The study may have implications for understanding and managing human pain.
Researchers have discovered that Australian tiger snake venom is highly conserved across species, making the corresponding antivenom effective against many other snake bites. This finding has significant human medical benefits and upends a long-held theory on venom evolution.
Researchers studied lizard venom to discover novel compounds with potential in treating stroke and deep-vein thrombosis. The study identified selective action on fibrinogen chains, a targeted approach successful for snake venom treatments.
A new robot designed by Mr Mouad Mkamel and his team can extract scorpion venom without harming the animal or risking life-threatening electrical shocks. The VES-4 device uses electric stimulation to collect venom droplets, which are then stored safely, offering a safer alternative to traditional manual methods.
Researchers at the University of Rochester discovered a process where wasps co-opt single copy genes to take on new functions, including in their venom glands and other parts of their anatomy.
Research led by University of Queensland scientist Associate Professor Bryan Fry reveals that brown snake venom attacks the nervous system in young snakes and circulatory system in older ones. This transformation allows the venom to become more potent and deadly, causing internal bleeding and death in humans.
Scientists have identified the specific protein targeted by snake venom that causes cells to detach and induce internal bleeding. Animals resistant to snake venom, such as opossums and camels, possess a variation of this protein that may provide protective benefits.
Researchers found that fang blenny venom contains a neuropeptide, lipase, and opioid peptide, which cause a sudden drop in blood pressure in predators. This leads to disorientation and can help the fish escape. The venom's unique components have also inspired mimicry among other fish.
The fang blenny's opioid peptides inhibit pain rather than cause it, making them a potential source of new painkillers. The unique venom also gives the fish an advantage in the wild, allowing it to escape predators or defeat competitors.
New study reveals commonly recommended first aid actions for jellyfish stings can actually increase venom injection, leading to more severe pain and scars. The team recommends rinsing with vinegar or plucking tentacles off with tweezers as alternative treatments.
A University of Queensland-led study reveals how cobras evolved their potent flesh-eating venom alongside distinctive hoods and warning colors. The research found that cobras' venom is used both for predation and defense, with increased potency linked to warning strategies.
Researchers have created a polymer nanogel material that can halt the spread of venom from various species of snakes, including cobras, kraits, and pit vipers. The new treatment has broad-spectrum ability and is made with readily available components, making it more affordable and accessible.
Researchers discovered that brown recluse spiders use a micro looping technique to make their threads stronger than other spiders, with the added benefit of preventing premature breakage. This technique could lead to new fibre technology inspired by the spider's silk, potentially improving impact absorbing structures in space travel.
A fossilized skull of Euchambersia revealed the first evidence of an ancient venomous vertebrate. The reptile's unique anatomy allowed its venom to flow directly into its mouth and prey through specialized teeth. This discovery sheds light on the evolution of venom in mammals.
A national analysis of 13 years' data reveals that Australia's venomous creatures pose a significant public health threat. Bees and wasps are responsible for the most hospital admissions, followed by spider bites and snake bites, with anaphylactic shock being a major contributor to fatalities.
Australian researchers have discovered that the platypus and echidna have evolved changes in the hormone GLP-1, making it resistant to rapid degradation. This finding has potential for developing new type 2 diabetes treatments with a long-lasting form of insulin.
Researchers have recorded a new sighting of Günther's sea snake, a rarely seen venomous species, in Iranian coastal waters. The discovery expands the species' known range and brings the total number of sea snakes in the area to ten.