Articles tagged with Venom
Researchers discovered that rattlesnakes' venom evolves through balancing selection, favoring genetic diversity and a diverse set of tools to subdue prey. This finding has implications for developing anti-venom therapeutics to better treat snakebites globally.
New research reveals that rattlesnakes maintain a broad and diverse toolkit of genes encoding snake venom, allowing them to adapt as local prey and conditions change. This adaptation enables snakes to overcome prey species evolving resistance to their venoms over millions of years.
Scientists have identified 118 toxin genes in the many-banded krait's genome, including a diverse three-finger toxin family. The study provides valuable resources for developing next-generation antivenoms with well-defined compositions.
Researchers at UTA and international collaborators have discovered the regulatory architecture that drives snake venom expression, shedding light on the evolution of complex traits. The study provides a detailed explanation of how snakes developed specialized venom glands to produce diverse deadly proteins.
Scientists have found that bacterial DNA is present in the venom of snakes and spiders, which could lead to infection in victims. The study also shows that these bacteria have mutated to resist the venom, highlighting the need for clinicians to consider treating snakebite victims for infection too.
Scientists at NUI Galway found that smaller scorpion species with smaller pincers have more potent venoms compared to larger species. This contradicts Indiana Jones' theory that bigger is better when it comes to scorpions.
Researchers discovered a new venom compound in deep-water cone snails, similar to the hormone somatostatin, with possible pharmaceutical applications for treating chronic pain and other human maladies. The study highlights the rich biochemical diversity of animal venoms and the need to explore new compounds.
Researchers have designed a fast-acting injectable insulin based on the venom of the Conus kinoshitai marine snail, which doesn't form clusters like human insulin. The new hybrid insulin holds promise for better diabetes control with faster action and reduced clustering.
Researchers at the University of Queensland discovered a venom molecule in bull ants that targets the echidna's pain pathway, potentially leading to new treatments for long-term pain. The molecule exploits an EGF signalling pathway, similar to those used in anti-cancer therapy.
Scientists have discovered a Noble False Widow spider capturing and entangling two protected Pipistrelle bats in the UK. The discovery demonstrates the species' invasive impact on native species, with the spiders' venom capable of causing neuromuscular paralysis.
Researchers discovered 84 potential toxins in a reef-based Australian sea anemone, including one new toxin that could be involved in digestion. The study found toxins located at sites corresponding to their ecological role, such as defense and predation.
A study led by SIB Swiss Institute of Bioinformatics reveals a strong convergence in global gene expression levels of venom glands across diverse animals. The research found that different species, including fish, scorpions, and mammals, use similar molecular mechanisms to produce toxins.
A recent study has found that snake venoms and mammalian salivary proteins share a common origin, suggesting that the foundation for venom to evolve exists in both snakes and mammals. This discovery reveals that the line between venomous and non-venomous mammals is blurrier than previously thought.
African and Asian primates evolved stronger resistance to cobras' venoms, while Madagascan Lemurs and Central and South American monkeys lacked this defense due to reduced eyesight
Researchers in Brazil and Belgium developed a stable, immune-resistant molecule from rattlesnake venom using PEGylation. The resulting drug candidate modulates blood clotting and has potential for anti-coagulant and wound dressing applications.
A groundbreaking technique allows researchers to study the unique venom production of a wide range of venomous animals, including scorpions, fish, and the platypus. This non-lethal approach provides new insights into how animals produce venom and opens up possibilities for discovering new drugs.
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.
Researchers completed the first genetic sequencing of a Brazilian snake's genome, revealing that most toxin genes likely arose from existing functions in ancestral species. The study identified markers for comparing toxin genes with non-toxic 'ancestral' genes, shedding light on the evolution of venom production.
A drug candidate developed from a molecule in the venom of the Fraser Island funnel web spider can prevent damage caused by a heart attack and extend donor heart life for organ transplants. The treatment blocks a death signal sent from the heart after an attack, reducing cell death and improving survival.
A novel body tissue adhesive incorporating snake venom has been developed to stop life-threatening bleeding in seconds. The 'super glue' works with visible light and offers 10 times the strength of existing fibrin glue, cutting blood clotting time in half.
A research team has identified a naturally abundant venom peptide from ants that can initiate an immune response via a pseudo-allergic receptor MRGPRX2. The study reveals a novel pathway for this receptor, showing P17 induces infiltration of monocytes at the injected site by activating MRGPRX2.
Researchers found that spiders from 11 different families can catch and eat snakes, including species up to one meter in length. The venom of these spiders also has a similar effect on snake nervous systems as it does on humans.
Researchers have identified a new potential treatment for IBS pain, derived from tarantula venom. In mice experiments, the molecule Tsp1a significantly reduced symptoms associated with chronic IBS pain, without interfering with other body functions.
A team of researchers from the University of Queensland has discovered a venomous caterpillar that produces peptides with high potency against nematode parasites and disease-causing pathogens. The study also unlocks a source of bioactive peptides with potential uses in medicine, biotechnology, and scientific tools.
Scientists have discovered that the process of freeze-drying destroys paralytic neurotoxic activity in stonefish venom, which may impact the effectiveness of current antivenom formulations. The study also reveals how the venom disrupts heart function and can block nerve receptors, leading to altered heart rhythms.
A new study by NUI Galway confirms that Noble False Widow spider bites can cause severe envenomations, ranging from mild pain to debilitating symptoms and even hospitalization. The research team established a DNA database to identify the species, revealing that most bites occur in homes and around sleep sites.
Researchers at Michigan Medicine found that people with venom allergies are nearly 10 times more likely to suffer from mastocytosis, a bone marrow disorder. The study analyzed 27 million US patients and revealed the condition in over 0.1% of venom allergy patients.
Researchers found that the evolutionary distance between a snake's prey species determines venom complexity, not just diet variety. The study uses next-generation sequencing to generate the largest dataset of viperid snakes' proteomes and venom-gland transcriptomes.
Research reveals that pitviper species consuming more evolutionarily diverse prey produce more complex venom. The study found that the evolutionary distance between consumed prey species affects venom complexity, suggesting subtle differences in venom targets.
A new venomous snake species, Suzhen's krait, has been discovered in Southwestern China and Northern Myanmar. The snake is named after the mythical figure Bai Su Zhen from traditional Chinese mythology.
Researchers found that the genetic foundation required for oral venom to evolve is present in both reptiles and mammals. Salivary gland tissues in mammals display a similar pattern of gene activity as snake venom glands, suggesting an ancient functional core shared since the two lineages split hundreds of millions of years ago.
Researchers from The George Washington University reclassified the banana spider genus Phoneutria, revealing two previously thought-to-be-similar species: P. boliviensis and P. depilata. Genetic analysis revealed significant differences between the two forms, which differ in their geographic distribution and morphological characteristics.
Researchers found that spitting cobra venoms are more effective in causing pain than non-spitting counterparts. The unique trait is attributed to molecular adaptations that enhance the action of pre-existing venom cytotoxins.
Researchers demonstrate that defensive selection pressures can influence venom composition in snakes, resulting in enhanced pain-causing ability of the venoms. This is an exemplary case of convergent evolution in the natural world.
A study of spitting cobras shows that a combination of venom components have evolved to create an instantly painful venom, used for defense rather than hunting. The research provides a remarkable example of convergent evolution and suggests early humans may have influenced the evolution of spitting in cobras.
Researchers found that scorpion venom triggers a systemic neuroimmune reaction leading to pulmonary edema and cardiac alterations. Administration of corticosteroids, such as dexamethasone, can quickly inhibit the inflammatory process and prevent death in mice.
A team led by University of South Florida biologist Mark Margres has sequenced the genome of the Tiger Rattlesnake to understand its deadly venom. The research reveals a complex process behind the venom's toxicity, with only 15 genes actively producing toxic proteins.
A new study published in Scientific Reports confirms that common house spiders carry harmful bacteria and can transmit them through their fangs when biting. The study found that some of these bacteria are multi-drug resistant, making infections difficult to treat with regular medicine.
A new antivenom strategy has been developed to combat deadly snake bites, which are a major public health issue in low-income countries. The potential treatment is a peptide that can neutralize venom from 75% of all venomous snakes and is cheaper and more portable than traditional antibody-based treatment.
Researchers are pioneering a new type of antivenom treatment to neutralize venom toxins from the bloodstream with more efficacy, safety and affordability. The goal is to provide a low-cost, easy-to-produce, safe to administer, clinically effective and low dose type of antivenom that can be stored and used for community treatment.
A study mapping toxins produced by tube-dwelling anemones identified 525 genes encoding proteins that act on the nervous system, cardiovascular system, and cell walls. Preliminary results showed a toxin effective against breast cancer cells, highlighting potential for novel medications.
Researchers repurposed wasp venom peptides to develop anti-infectives with dual antimicrobial and immunomodulatory properties. Mice treated with these peptides exhibited reduced bacterial counts and improved survival rates.
Scientists at Penn Medicine have engineered bacteria-killing molecules from toxic proteins found in wasp venom, which could help combat antibiotic-resistant infections. The new antimicrobial molecules work by disrupting bacterial membranes and summoning immune cells, showing promise as potential treatments for sepsis and tuberculosis.
Researchers discovered venom glands in the mouth of caecilians, a type of limbless amphibian, which release a secretion into prey during biting. This is the first time such glands have been found in amphibians, and it suggests that caecilians can be venomous.
Researchers at the University of Queensland discovered that male funnel web spider venom is deadlier than female venom due to evolutionary adaptations. The study, published in PNAS, sheds light on the unique properties of delta-hexatoxins and their fatal neurotoxic effects on humans.
Researchers from the University of Queensland have discovered two pain-blocking peptides in the Venezuelan Pinkfoot Goliath tarantula's venom, showing great potential as treatments for chronic intestinal pain. The peptides inhibit the most important ion channels underlying pain and nearly stopped chronic visceral pain in a model of IBS.
Researchers have discovered a peptide in scorpion venom that can dilate blood vessels and lower blood pressure in hypertensive rats. The compound, KPP, regulates proteins associated with cell death, energy production, and muscle contraction.
Researchers have found snake-like venom glands in the ringed caecilian, a limbless amphibian, which may indicate an early evolutionary design of oral venom organs. The discovery suggests that caecilians could be the oldest land-dwelling vertebrates with oral venom glands.
Researchers have identified key toxins in Nomura's jellyfish that make its venom deadly to some swimmers. The venom is a complex mix of toxins similar to those found in poisonous snakes, spiders, and bees.
Researchers have identified a potential novel way to treat snakebite, with the oral administration of DMPS providing protection against venom and enhancing its effect when used with conventional antivenom. Early treatment with DMPS could save lives and limbs in rural settings where healthcare access is limited.
Researchers at UT Southwestern Medical Center have uncovered the detailed shape of a key protein involved in muscle contraction using cryo-EM technology. The discovery may lead to improved understanding of muscle-weakening genetic conditions.
Researchers at the University of Queensland have designed a novel tarantula venom mini-protein that can relieve severe pain without addiction. The mini-protein, Huwentoxin-IV, binds to specific pain receptors and has been tested in mouse models with promising results.
A new study suggests that snake venom did not evolve primarily as a defense mechanism, but rather to overpower and kill prey. Researchers surveyed nearly 400 people who work with snakes and found that only a minority of bites cause immediate pain, implying that the venom's composition has not been optimized for defensive purposes.
Animal welfare experts call for tighter laws on keeping dangerous snakes as pets, citing difficulties in managing them at home and treating them in veterinary practices. Many vets are also concerned about the lack of expertise and insurance to handle venomous snakes.
Researchers have developed a method to grow snake venom gland cells as organoids, producing active toxins. The lab-grown mini glands can be grown from multiple species and maintained indefinitely, holding promise for reducing the devastating impact of snakebites.
Researchers created snake venom glands as organoids, producing biologically active venom peptides. This breakthrough could lead to more efficient and cost-effective production of antivenom, addressing a pressing medical need.
The study identifies the proteins that make up the venom of the Hispaniolan solenodon, a rare and endangered species. The research reveals that these toxins are likely used to cause drops in blood pressure in vertebrate prey, and have evolved independently on at least four occasions in eulipotyphlan mammals.
Researchers have discovered a class of analgesics in conotoxin peptides, which are found in the venom of marine cone snails. These peptides show exceptional potency and selectivity for ion channels involved in pain transmission, offering new avenues for pain therapy.
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 group of seven snorkelling grandmothers has helped scientists document a large and previously underestimated population of venomous greater sea snakes in the bay. The project revealed over 249 individual snakes, with new information on breeding patterns and numbers of young.