Venoms from animals of the order Scorpionida of the class Arachnida. They contain neuro- and hemotoxins, enzymes, and various other factors that may release acetylcholine and catecholamines from nerve endings. Of the several protein toxins that have been characterized, most are immunogenic.
Arthropods of the order Scorpiones, of which 1500 to 2000 species have been described. The most common live in tropical or subtropical areas. They are nocturnal and feed principally on insects and other arthropods. They are large arachnids but do not attack man spontaneously. They have a venomous sting. Their medical significance varies considerably and is dependent on their habits and venom potency rather than on their size. At most, the sting is equivalent to that of a hornet but certain species possess a highly toxic venom potentially fatal to humans. (From Dorland, 27th ed; Smith, Insects and Other Arthropods of Medical Importance, 1973, p417; Barnes, Invertebrate Zoology, 5th ed, p503)
The effects, both local and systemic, caused by the bite of SCORPIONS.
Poisonous animal secretions forming fluid mixtures of many different enzymes, toxins, and other substances. These substances are produced in specialized glands and secreted through specialized delivery systems (nematocysts, spines, fangs, etc.) for disabling prey or predator.
Toxic substances from microorganisms, plants or animals that interfere with the functions of the nervous system. Most venoms contain neurotoxic substances. Myotoxins are included in this concept.
Venoms from snakes of the subfamily Crotalinae or pit vipers, found mostly in the Americas. They include the rattlesnake, cottonmouth, fer-de-lance, bushmaster, and American copperhead. Their venoms contain nontoxic proteins, cardio-, hemo-, cyto-, and neurotoxins, and many enzymes, especially phospholipases A. Many of the toxins have been characterized.
Specific, characterizable, poisonous chemicals, often PROTEINS, with specific biological properties, including immunogenicity, produced by microbes, higher plants (PLANTS, TOXIC), or ANIMALS.
Venoms obtained from Apis mellifera (honey bee) and related species. They contain various enzymes, polypeptide toxins, and other substances, some of which are allergenic or immunogenic or both. These venoms were formerly used in rheumatism to stimulate the pituitary-adrenal system.
A benzoate-cevane found in VERATRUM and Schoenocaulon. It activates SODIUM CHANNELS to stay open longer than normal.
Pinched-off nerve endings and their contents of vesicles and cytoplasm together with the attached subsynaptic area of the membrane of the post-synaptic cell. They are largely artificial structures produced by fractionation after selective centrifugation of nervous tissue homogenates.
Conformational transitions of a protein from unfolded states to a more folded state.
Venoms from snakes of the genus Naja (family Elapidae). They contain many specific proteins that have cytotoxic, hemolytic, neurotoxic, and other properties. Like other elapid venoms, they are rich in enzymes. They include cobramines and cobralysins.
Venoms from SNAKES of the viperid family. They tend to be less toxic than elapid or hydrophid venoms and act mainly on the vascular system, interfering with coagulation and capillary membrane integrity and are highly cytotoxic. They contain large amounts of several enzymes, other factors, and some toxins.
Venoms produced by the wasp (Vespid) family of stinging insects, including hornets; the venoms contain enzymes, biogenic amines, histamine releasing factors, kinins, toxic polypeptides, etc., and are similar to bee venoms.
Venoms of arthropods of the order Araneida of the ARACHNIDA. The venoms usually contain several protein fractions, including ENZYMES, hemolytic, neurolytic, and other TOXINS, BIOLOGICAL.
A class of drugs that act by inhibition of potassium efflux through cell membranes. Blockade of potassium channels prolongs the duration of ACTION POTENTIALS. They are used as ANTI-ARRHYTHMIA AGENTS and VASODILATOR AGENTS.
The order of amino acids as they occur in a polypeptide chain. This is referred to as the primary structure of proteins. It is of fundamental importance in determining PROTEIN CONFORMATION.
Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories.
Antisera used to counteract poisoning by animal VENOMS, especially SNAKE VENOMS.
Venoms from snakes of the family Elapidae, including cobras, kraits, mambas, coral, tiger, and Australian snakes. The venoms contain polypeptide toxins of various kinds, cytolytic, hemolytic, and neurotoxic factors, but fewer enzymes than viper or crotalid venoms. Many of the toxins have been characterized.
Venoms from animals of the phylum Arthropoda. Those most investigated are from scorpions and spiders of the class Arachnidae and from ant, bee, and wasp families of the Insecta order Hymenoptera. The venoms contain protein toxins, enzymes, and other bioactive substances and may be lethal to man.
Members of the class of compounds composed of AMINO ACIDS joined together by peptide bonds between adjacent amino acids into linear, branched or cyclical structures. OLIGOPEPTIDES are composed of approximately 2-12 amino acids. Polypeptides are composed of approximately 13 or more amino acids. PROTEINS are linear polypeptides that are normally synthesized on RIBOSOMES.
Ion channels that specifically allow the passage of SODIUM ions. A variety of specific sodium channel subtypes are involved in serving specialized functions such as neuronal signaling, CARDIAC MUSCLE contraction, and KIDNEY function.
The degree of similarity between sequences of amino acids. This information is useful for the analyzing genetic relatedness of proteins and species.
An aminoperhydroquinazoline poison found mainly in the liver and ovaries of fishes in the order TETRAODONTIFORMES, which are eaten. The toxin causes paresthesia and paralysis through interference with neuromuscular conduction.
Cell membrane glycoproteins that are selectively permeable to potassium ions. At least eight major groups of K channels exist and they are made up of dozens of different subunits.
Gated, ion-selective glycoproteins that traverse membranes. The stimulus for ION CHANNEL GATING can be due to a variety of stimuli such as LIGANDS, a TRANSMEMBRANE POTENTIAL DIFFERENCE, mechanical deformation or through INTRACELLULAR SIGNALING PEPTIDES AND PROTEINS.
A genus of poisonous snakes of the VIPERIDAE family. About 50 species are known and all are found in tropical America and southern South America. Bothrops atrox is the fer-de-lance and B. jararaca is the jararaca. (Goin, Goin, and Zug, Introduction to Herpetology, 3d ed, p336)
Models used experimentally or theoretically to study molecular shape, electronic properties, or interactions; includes analogous molecules, computer-generated graphics, and mechanical structures.
A member of the alkali group of metals. It has the atomic symbol Na, atomic number 11, and atomic weight 23.
Venoms produced by FISHES, including SHARKS and sting rays, usually delivered by spines. They contain various substances, including very labile toxins that affect the HEART specifically and all MUSCLES generally.
Venoms from the superfamily Formicoidea, Ants. They may contain protein factors and toxins, histamine, enzymes, and alkaloids and are often allergenic or immunogenic.
A family of extremely venomous snakes, comprising coral snakes, cobras, mambas, kraits, and sea snakes. They are widely distributed, being found in the southern United States, South America, Africa, southern Asia, Australia, and the Pacific Islands. The elapids include three subfamilies: Elapinae, Hydrophiinae, and Lauticaudinae. Like the viperids, they have venom fangs in the front part of the upper jaw. The mambas of Africa are the most dangerous of all snakes by virtue of their size, speed, and highly toxic venom. (Goin, Goin, and Zug, Introduction to Herpetology, 3d ed, p329-33)
Liquid chromatographic techniques which feature high inlet pressures, high sensitivity, and high speed.
Venoms from mollusks, including CONUS and OCTOPUS species. The venoms contain proteins, enzymes, choline derivatives, slow-reacting substances, and several characterized polypeptide toxins that affect the nervous system. Mollusk venoms include cephalotoxin, venerupin, maculotoxin, surugatoxin, conotoxins, and murexine.
Venoms from jellyfish; CORALS; SEA ANEMONES; etc. They contain hemo-, cardio-, dermo- , and neuro-toxic substances and probably ENZYMES. They include palytoxin, sarcophine, and anthopleurine.
Proteins obtained from species of REPTILES.

The putative bioactive surface of insect-selective scorpion excitatory neurotoxins. (1/800)

Scorpion neurotoxins of the excitatory group show total specificity for insects and serve as invaluable probes for insect sodium channels. However, despite their significance and potential for application in insect-pest control, the structural basis for their bioactivity is still unknown. We isolated, characterized, and expressed an atypically long excitatory toxin, Bj-xtrIT, whose bioactive features resembled those of classical excitatory toxins, despite only 49% sequence identity. With the objective of clarifying the toxic site of this unique pharmacological group, Bj-xtrIT was employed in a genetic approach using point mutagenesis and biological and structural assays of the mutant products. A primary target for modification was the structurally unique C-terminal region. Sequential deletions of C-terminal residues suggested an inevitable significance of Ile73 and Ile74 for toxicity. Based on the bioactive role of the C-terminal region and a comparison of Bj-xtrIT with a Bj-xtrIT-based model of a classical excitatory toxin, AaHIT, a conserved surface comprising the C terminus is suggested to form the site of recognition with the sodium channel receptor.  (+info)

Altered properties of neuronal sodium channels associated with genetic resistance to pyrethroids. (2/800)

Genetic resistance to pyrethroid insecticides involves nervous system insensitivity linked to regulatory and structural genes of voltage-sensitive sodium channels. We examined the properties and relative density of sodium channels in central neurons of susceptible and pyrethroid-resistant (Pyr-R) insects that were homozygous for the amino acid substitution V421M in the I-S6 transmembrane segment. Pyr-R sodium channels show approximately 21-fold lower sensitivity to the synthetic pyrethroid permethrin and a approximately 2-fold increased sensitivity to the alpha-scorpion toxin LqhalphaIT. Pyr-R channels also exhibit altered gating properties, including a approximately 13 mV positive shift in voltage-dependent activation and approximately 7 mV positive shift in steady-state inactivation. Consistent with these changes in gating behavior, Pyr-R central neurons are less excitable, as evidenced by an approximately 11 mV elevation of action potential threshold. No differences in sodium channel density are evident. The altered properties of Pyr-R sodium channels provide a plausible molecular basis for nervous system insensitivity associated with pyrethroid resistance.  (+info)

Peptide toxin blockers of voltage-sensitive K+ channels: inotropic effects on diaphragm. (3/800)

Agents that block many types of K+ channels (e.g., the aminopyridines) have substantial inotropic effects in skeletal muscle. Specific blockers of ATP-sensitive and Ca2+-activated K+ channels, on the other hand, do not, or minimally, alter the force of nonfatigued muscle, consistent with a predominant role for voltage-gated K+ channels in regulating muscle force. To test this more directly, we examined the effects of peptide toxins, which in other tissues specifically block voltage-gated K+ channels, on rat diaphragm in vitro. Twitch force was increased in response to alpha-, beta-, and gamma-dendrotoxin and tityustoxin Kalpha (17 +/- 6, 22 +/- 5, 42 +/- 14, and 13 +/- 5%; P < 0.05, < 0.01, < 0.05, < 0.05, respectively) but not in response to delta-dendrotoxin or BSA (in which toxins were dissolved). Force during 20-Hz stimulation was also increased significantly by alpha-, beta-, and gamma-dendrotoxin and tityustoxin Kalpha. Among agents, increases in twitch force correlated with the degree to which contraction time was prolonged (r = 0.88, P < 0.02). To determine whether inotropic effects could be maintained during repeated contractions, muscle strips underwent intermittent 20-Hz train stimulation for a duration of 2 min in presence or absence of gamma-dendrotoxin. Force was significantly greater with than without gamma-dendrotoxin during repetitive stimulation for the first 60 s of repetitive contractions. Despite the approximately 55% higher value for initial force in the presence vs. absence of gamma-dendrotoxin, the rate at which fatigue occurred was not accelerated by the toxin, as assessed by the amount of time over which force declined by 25 and 50%. These data suggest that blocking voltage-activated K+ channels may be a useful therapeutic strategy for augmenting diaphragm force, provided less toxic blockers of these channels can be found.  (+info)

Molecular modeling of voltage-gated potassium channel pore. (4/800)

AIM: To build a structure model for the pore of voltage-gated Shaker potassium channel and examine its validity. METHODS: (1) Structural restraints were derived from experimental and theoretical studies; (2) An initial structural motif satisfying the derived restraints was first constructed, and further refined by restrained molecular mechanics; (3) The quality of the model was judged by the criterion that whether it could clarify molecular mechanisms of channel functions and explain the known experimental facts. RESULTS: (1) A computer pore structure was proposed, in which the residues within signature sequence (corresponding to Shaker 439-446) dipped into the membrane and formed the narrow part of the pore in a non-periodic conformation, while the other residues in the P region constituted the outer mouth of the pore; (2) The ion selectivity was achieved through cation-pi orbital interaction mechanism at position 445 and oxygen cage mechanism at position 447; (3) Different binding modes led to different affinity of CTX and AgTx2 to channel; and (4) The inside of pore was dominated by negative electrostatic potential. CONCLUSION: The model proposed was consistent with the derived restraints from the experimental results.  (+info)

Activation of ryanodine receptors by imperatoxin A and a peptide segment of the II-III loop of the dihydropyridine receptor. (5/800)

Excitation-contraction coupling in skeletal muscle is believed to be triggered by direct protein-protein interactions between the sarcolemmal dihydropyridine-sensitive Ca2+ channel and the Ca2+ release channel/ryanodine receptor (RyR) of sarcoplasmic reticulum. A 138-amino acid cytoplasmic loop between repeats II and III of the alpha1 subunit of the skeletal dihydropyridine receptor (the II-III loop) interacts with a region of the RyR to elicit Ca2+ release. In addition, small segments (10-20 amino acid residues) of the II-III loop retain the capacity to activate Ca2+ release. Imperatoxin A, a 33-amino acid peptide from the scorpion Pandinus imperator, binds directly to the RyR and displays structural and functional homology with an activating segment of the II-III loop (Glu666-Leu690). Mutations in a structural motif composed of a cluster of basic amino acids followed by Ser or Thr dramatically reduce or completely abolish the capacity of the peptides to activate RyRs. Thus, the Imperatoxin A-RyR interaction mimics critical molecular characteristics of the II-III loop-RyR interaction and may be a useful tool to elucidate the molecular mechanism that couples membrane depolarization to sarcoplasmic reticulum Ca2+ release in vivo.  (+info)

Role of lysine and tryptophan residues in the biological activity of toxin VII (Ts gamma) from the scorpion Tityus serrulatus. (6/800)

Toxin VII (TsVII), also known as Ts gamma, is the most potent neurotoxin in the venom of the Brazilian scorpion Tityus serrulatus. It has been purified to homogeneity using a new fast and efficient method. Chemical modification of TsVII with the tryptophan-specific reagent o-nitrophenylsulfenyl chloride yielded three modified derivatives (residues Trp39, Trp50 and Trp54). Acetylation of TsVII mostly generated the monoacetylated Lys12 derivative. No side reactions were detected, as indicated by endoproteinase Lys-C peptide mapping, Edman degradation and electrospray mass spectrometry. Circular dichroism and fluorimetric measurements showed that none of the chemical modifications altered the overall structure of the derivatives. The acetylation of Lys12 or the sulfenylation of Trp39 or Trp54 led to a loss of both toxicity in mice and apparent binding affinity for rat brain and cockroach synaptosomal preparations. Sulfenylation of Trp50, however, moderately affected the toxicity of TsVII in mice and had almost no effect on its binding properties. A 3-dimensional model of TsVII was constructed by homology modeling. It suggests that the most reactive residues (Lys12 and Trp39 and Trp54) are all important in the functional disruption of neuronal sodium channels by TsVII, and are close to each other in the hydrophobic conserved region.  (+info)

Solution structure of a conformationally constrained Arg-Gly-Asp-like motif inserted into the alpha/beta scaffold of leiurotoxin I. (7/800)

A monoclonal antibody, AC7, directed against the RGD-binding site of the GPIIIa subunit of the platelet fibrinogen receptor, interacts with activated platelet. The H3 region (H3, RQMIRGYFDV sequence) of the complementarity-determining region 3 heavy chain of AC7 inhibits platelet aggregation and fibrinogen binding to platelet. H3 contains the arginine, glycine and aspartate residues, but in an unusual order. The solution structure of the decapeptide has been studied by proton NMR. The NMR data suggested a helical equilibrium. To test whether the helical structure of H3 was biologically relevant, a conformationally constrained peptide with the RGD-like motif was designed. The sequence of a scorpion toxin (leiurotoxin I) has been modified in order to constrain the H3 sequence in a rigid helical conformation. The structure of leiurotoxin I consists of a beta-sheet and an alpha-helix, linked by three disulfide bridges. The structural feature of the chimeric peptide (H3-leiurotoxin) has been determined by standard two-dimensional NMR techniques. H3-Leiurotoxin structure closely resembles that of leiurotoxin I.  (+info)

A new scorpion toxin (BmK-PL) stimulates Ca2+-release channel activity of the skeletal-muscle ryanodine receptor by an indirect mechanism. (8/800)

A peptide toxin isolated from the Chinese scorpion Buthus martensi Karsch (BmK-PL) stimulated Ca2+-release channel activity in both triad membranes and reconstituted ryanodine receptors partially purified from rabbit skeletal muscle. In [3H]ryanodine binding experiments, the toxin increased the affinity of ryanodine for the receptor, from a Kd of 24.3 nM to 2.9 nM, which is an enhancement similar to that seen with known receptor activators, such as ATP and high concentrations of KCl. In contrast, toxin enhancement was not observed with purified receptors, although intrinsic binding activity and stimulation by the conventional receptor activators were retained. In single channel recordings of Ca2+-release activity, the toxin increased the open channel probability (Po) from 0.019 to 0.043 (226% of control) in triad preparations. Further toxin enhancement of Po from 0.07 to 0.37 (529% of control) was observed using partially-purified receptors in the presence of ATP. When purified receptors were assayed in the presence of ATP, however, they showed a high value of Po (0.33) and no further increase was observed following application of the toxin. Results derived from two different experimental methods consistently suggest that a molecule(s) required for toxin-induced enhancement is absent from the purified receptor preparation. Western blot analysis of receptors prepared using three different protocols showed that triadin was missing from the purified receptor preparation. The scorpion toxin minimally enhanced Ca2+-release channel activity of cardiac preparations. From these results, we conclude that the toxin preferentially increases the activity of skeletal-muscle ryanodine receptors by an indirect mechanism, possibly binding to associated protein molecule(s). Triadin is a strong candidate for such a molecule.  (+info)

Scorpion venoms are complex mixtures of neurotoxins, enzymes, and other bioactive molecules that are produced by the venom glands of scorpions. These venoms are primarily used for prey immobilization and defense. The neurotoxins found in scorpion venoms can cause a variety of symptoms in humans, including pain, swelling, numbness, and in severe cases, respiratory failure and death.

Scorpion venoms are being studied for their potential medical applications, such as in the development of new pain medications and insecticides. Additionally, some components of scorpion venom have been found to have antimicrobial properties and may be useful in the development of new antibiotics.

I believe there may be some confusion in your question as "scorpions" are not a medical term, but instead refer to a type of arachnid. If you're asking about a medical condition that might involve scorpions, then perhaps you're referring to "scorpion stings."

Scorpion stings occur when a scorpion uses its venomous stinger to inject venom into another animal or human. The effects of a scorpion sting can vary greatly depending on the species of scorpion and the amount of venom injected, but generally, they can cause localized pain, swelling, and redness at the site of the sting. In more severe cases, symptoms such as numbness, difficulty breathing, muscle twitching, or convulsions may occur. Some species of scorpions have venom that can be life-threatening to humans, especially in children, the elderly, and those with compromised immune systems.

If you are looking for information on a specific medical condition or term, please provide more details so I can give you a more accurate answer.

Scorpion stings are defined as injuries caused by the venomous sting of a scorpion. These creatures have a venomous stinger on their tail, which they use to inject venom into their prey or attackers. The severity of a scorpion sting can vary greatly depending on the species of scorpion and the amount of venom injected. Some stings may cause only minor pain and swelling, while others can be life-threatening, causing symptoms such as difficulty breathing, muscle twitching, convulsions, and cardiac arrest. Immediate medical attention is required for severe scorpion stings, and treatment typically involves the use of antivenom to neutralize the venom.

Venom is a complex mixture of toxic compounds produced by certain animals, such as snakes, spiders, scorpions, and marine creatures like cone snails and stonefish. These toxic substances are specifically designed to cause damage to the tissues or interfere with the normal physiological processes of other organisms, which can lead to harmful or even lethal effects.

Venoms typically contain a variety of components, including enzymes, peptides, proteins, and small molecules, each with specific functions that contribute to the overall toxicity of the mixture. Some of these components may cause localized damage, such as tissue necrosis or inflammation, while others can have systemic effects, impacting various organs and bodily functions.

The study of venoms, known as toxinology, has important implications for understanding the evolution of animal behavior, developing new therapeutics, and advancing medical treatments for envenomation (the process of being poisoned by venom). Additionally, venoms have been used in traditional medicine for centuries, and ongoing research continues to uncover novel compounds with potential applications in modern pharmacology.

Neurotoxins are substances that are poisonous or destructive to nerve cells (neurons) and the nervous system. They can cause damage by destroying neurons, disrupting communication between neurons, or interfering with the normal functioning of the nervous system. Neurotoxins can be produced naturally by certain organisms, such as bacteria, plants, and animals, or they can be synthetic compounds created in a laboratory. Examples of neurotoxins include botulinum toxin (found in botulism), tetrodotoxin (found in pufferfish), and heavy metals like lead and mercury. Neurotoxic effects can range from mild symptoms such as headaches, muscle weakness, and tremors, to more severe symptoms such as paralysis, seizures, and cognitive impairment. Long-term exposure to neurotoxins can lead to chronic neurological conditions and other health problems.

Crotalid venoms are the toxic secretions produced by the members of the Crotalinae subfamily, also known as pit vipers. This group includes rattlesnakes, cottonmouths (or water moccasins), and copperheads, which are native to the Americas, as well as Old World vipers found in Asia and Europe, such as gaboon vipers and saw-scaled vipers.

Crotalid venoms are complex mixtures of various bioactive molecules, including enzymes, proteins, peptides, and other low molecular weight components. They typically contain a variety of pharmacologically active components, such as hemotoxic and neurotoxic agents, which can cause extensive local tissue damage, coagulopathy, cardiovascular dysfunction, and neuromuscular disorders in the victim.

The composition of crotalid venoms can vary significantly between different species and even among individual specimens within the same species. This variability is influenced by factors such as geographic location, age, sex, diet, and environmental conditions. As a result, the clinical manifestations of crotalid envenomation can be highly variable, ranging from mild local reactions to severe systemic effects that may require intensive medical treatment and supportive care.

Crotalid venoms have been the subject of extensive research in recent years due to their potential therapeutic applications. For example, certain components of crotalid venoms have shown promise as drugs for treating various medical conditions, such as cardiovascular diseases, pain, and inflammation. However, further studies are needed to fully understand the mechanisms of action of these venom components and to develop safe and effective therapies based on them.

Biological toxins are poisonous substances that are produced by living organisms such as bacteria, plants, and animals. They can cause harm to humans, animals, or the environment. Biological toxins can be classified into different categories based on their mode of action, such as neurotoxins (affecting the nervous system), cytotoxins (damaging cells), and enterotoxins (causing intestinal damage).

Examples of biological toxins include botulinum toxin produced by Clostridium botulinum bacteria, tetanus toxin produced by Clostridium tetani bacteria, ricin toxin from the castor bean plant, and saxitoxin produced by certain types of marine algae.

Biological toxins can cause a range of symptoms depending on the type and amount of toxin ingested or exposed to, as well as the route of exposure (e.g., inhalation, ingestion, skin contact). They can cause illnesses ranging from mild to severe, and some can be fatal if not treated promptly and effectively.

Prevention and control measures for biological toxins include good hygiene practices, vaccination against certain toxin-producing bacteria, avoidance of contaminated food or water sources, and personal protective equipment (PPE) when handling or working with potential sources of toxins.

Bee venom is a poisonous substance that a honeybee (Apis mellifera) injects into the skin of a person or animal when it stings. It's produced in the venom gland and stored in the venom sac of the bee. Bee venom is a complex mixture of proteins, peptides, and other compounds. The main active components of bee venom include melittin, apamin, and phospholipase A2.

Melittin is a toxic peptide that causes pain, redness, and swelling at the site of the sting. It also has hemolytic (red blood cell-destroying) properties. Apamin is a neurotoxin that can affect the nervous system and cause neurological symptoms in severe cases. Phospholipase A2 is an enzyme that can damage cell membranes and contribute to the inflammatory response.

Bee venom has been used in traditional medicine for centuries, particularly in China and other parts of Asia. It's believed to have anti-inflammatory, analgesic (pain-relieving), and immunomodulatory effects. Some studies suggest that bee venom may have therapeutic potential for a variety of medical conditions, including rheumatoid arthritis, multiple sclerosis, and chronic pain. However, more research is needed to confirm these findings and to determine the safety and efficacy of bee venom therapy.

It's important to note that bee stings can cause severe allergic reactions (anaphylaxis) in some people, which can be life-threatening. If you experience symptoms such as difficulty breathing, rapid heartbeat, or hives after being stung by a bee, seek medical attention immediately.

Veratridine is not a medical term, but it is a chemical compound that has been used in scientific research. It's a plant alkaloid found primarily in the seeds and roots of various Veratrum species (also known as false hellebore or white hellebore).

In a pharmacological context, veratridine can be defined as:

A steroidal alkaloid that acts as a potent agonist at voltage-gated sodium channels in excitable membranes. It causes persistent activation of these channels, leading to sustained depolarization and increased neuronal excitability. Veratridine has been used in research to study the properties and functions of sodium channels, as well as neurotransmission and nerve impulse transmission.

However, it is not a term typically used in clinical medicine or patient care.

Synaptosomes are subcellular structures that can be isolated from the brain tissue. They are formed during the fractionation process of brain homogenates and consist of intact presynaptic terminals, including the synaptic vesicles, mitochondria, and cytoskeletal elements. Synaptosomes are often used in neuroscience research to study the biochemical properties and functions of neuronal synapses, such as neurotransmitter release, uptake, and metabolism.

Protein refolding is the process by which a denatured or misfolded protein reverts to its native, functional three-dimensional structure. Proteins are complex molecules that perform a wide range of functions within living organisms. Their function is heavily dependent on their unique three-dimensional shape, which is determined by the specific sequence of amino acids that make up the protein.

When proteins are exposed to certain environmental conditions, such as changes in temperature, pH, or the presence of denaturing agents, they can lose their native conformation and become denatured or misfolded. This can result in the loss of protein function and, in some cases, the formation of aggregates that can be toxic to cells.

Protein refolding is a crucial process for maintaining proper protein function within cells. It involves several steps:

1. Unfolding: The denatured or misfolded protein must first be unfolded into its linear amino acid sequence. This can be accomplished through various methods, such as exposure to chemical denaturants or changes in pH.
2. Renaturation: Once the protein is unfolded, it can begin to refold into its native conformation. This process is often facilitated by chaperone proteins, which help to stabilize the protein and prevent aggregation during the refolding process.
3. Folding: The protein must then fold into its correct three-dimensional structure. This is a complex process that involves the formation of specific bonds between amino acids, as well as the interaction with other molecules in the cell.
4. Quality control: Once the protein has folded, it must be checked for correct folding and function. Misfolded proteins may be targeted for degradation by the cell's quality control mechanisms.

Protein refolding is a critical process that occurs naturally within cells, but it can also be studied in vitro (outside of the cell) using various techniques. Understanding the mechanisms of protein refolding is important for developing therapies for diseases caused by protein misfolding and aggregation, such as Alzheimer's disease and Parkinson's disease.

Cobra venoms are a type of snake venom that is produced by cobras, which are members of the genus Naja in the family Elapidae. These venoms are complex mixtures of proteins and other molecules that have evolved to help the snake immobilize and digest its prey.

Cobra venoms typically contain a variety of toxic components, including neurotoxins, hemotoxins, and cytotoxins. Neurotoxins target the nervous system and can cause paralysis and respiratory failure. Hemotoxins damage blood vessels and tissues, leading to internal bleeding and organ damage. Cytotoxins destroy cells and can cause tissue necrosis.

The specific composition of cobra venoms can vary widely between different species of cobras, as well as between individual snakes of the same species. Some cobras have venoms that are primarily neurotoxic, while others have venoms that are more hemotoxic or cytotoxic. The potency and effects of cobra venoms can also be influenced by factors such as the age and size of the snake, as well as the temperature and pH of the environment.

Cobra bites can be extremely dangerous and even fatal to humans, depending on the species of cobra, the amount of venom injected, and the location of the bite. Immediate medical attention is required in the event of a cobra bite, including the administration of antivenom therapy to neutralize the effects of the venom.

"Viper venoms" refer to the toxic secretions produced by members of the Viperidae family of snakes, which include pit vipers (such as rattlesnakes, copperheads, and cottonmouths) and true vipers (like adders, vipers, and gaboon vipers). These venoms are complex mixtures of proteins, enzymes, and other bioactive molecules that can cause a wide range of symptoms in prey or predators, including local tissue damage, pain, swelling, bleeding, and potentially life-threatening systemic effects such as coagulopathy, cardiovascular shock, and respiratory failure.

The composition of viper venoms varies widely between different species and even among individuals within the same species. However, many viper venoms contain a variety of enzymes (such as phospholipases A2, metalloproteinases, and serine proteases) that can cause tissue damage and disrupt vital physiological processes in the victim. Additionally, some viper venoms contain neurotoxins that can affect the nervous system and cause paralysis or other neurological symptoms.

Understanding the composition and mechanisms of action of viper venoms is important for developing effective treatments for venomous snakebites, as well as for gaining insights into the evolution and ecology of these fascinating and diverse creatures.

Wasp venoms are complex mixtures of bioactive molecules produced by wasps (Hymenoptera: Vespidae) to defend themselves and paralyze prey. The main components include:

1. Phospholipases A2 (PLA2): Enzymes that can cause pain, inflammation, and damage to cell membranes.
2. Hyaluronidase: An enzyme that helps spread the venom by breaking down connective tissues.
3. Proteases: Enzymes that break down proteins and contribute to tissue damage and inflammation.
4. Antigen 5: A major allergen that can cause severe allergic reactions (anaphylaxis) in sensitive individuals.
5. Mastoparan: A peptide that induces histamine release, leading to localized inflammation and pain.
6. Neurotoxins: Some wasp venoms contain neurotoxins that can cause paralysis or neurological symptoms.

The composition of wasp venoms may vary among species, and individual sensitivity to the components can result in different reactions ranging from localized pain, swelling, and redness to systemic allergic responses.

Spider venoms are complex mixtures of bioactive compounds produced by the specialized glands of spiders. These venoms are primarily used for prey immobilization and defense. They contain a variety of molecules such as neurotoxins, proteases, peptides, and other biologically active substances. Different spider species have unique venom compositions, which can cause different reactions when they bite or come into contact with humans or other animals. Some spider venoms can cause mild symptoms like pain and swelling, while others can lead to more severe reactions such as tissue necrosis or even death in extreme cases.

Potassium channel blockers are a class of medications that work by blocking potassium channels, which are proteins in the cell membrane that control the movement of potassium ions into and out of cells. By blocking these channels, potassium channel blockers can help to regulate electrical activity in the heart, making them useful for treating certain types of cardiac arrhythmias (irregular heart rhythms).

There are several different types of potassium channel blockers, including:

1. Class III antiarrhythmic drugs: These medications, such as amiodarone and sotalol, are used to treat and prevent serious ventricular arrhythmias (irregular heart rhythms that originate in the lower chambers of the heart).
2. Calcium channel blockers: While not strictly potassium channel blockers, some calcium channel blockers also have effects on potassium channels. These medications, such as diltiazem and verapamil, are used to treat hypertension (high blood pressure), angina (chest pain), and certain types of arrhythmias.
3. Non-selective potassium channel blockers: These medications, such as 4-aminopyridine and tetraethylammonium, have a broader effect on potassium channels and are used primarily in research settings to study the electrical properties of cells.

It's important to note that potassium channel blockers can have serious side effects, particularly when used in high doses or in combination with other medications that affect heart rhythms. They should only be prescribed by a healthcare provider who is familiar with their use and potential risks.

An amino acid sequence is the specific order of amino acids in a protein or peptide molecule, formed by the linking of the amino group (-NH2) of one amino acid to the carboxyl group (-COOH) of another amino acid through a peptide bond. The sequence is determined by the genetic code and is unique to each type of protein or peptide. It plays a crucial role in determining the three-dimensional structure and function of proteins.

Molecular sequence data refers to the specific arrangement of molecules, most commonly nucleotides in DNA or RNA, or amino acids in proteins, that make up a biological macromolecule. This data is generated through laboratory techniques such as sequencing, and provides information about the exact order of the constituent molecules. This data is crucial in various fields of biology, including genetics, evolution, and molecular biology, allowing for comparisons between different organisms, identification of genetic variations, and studies of gene function and regulation.

Antivenins, also known as antivenoms, are medications created specifically to counteract venomous bites or stings from various creatures such as snakes, spiders, scorpions, and marine animals. They contain antibodies that bind to and neutralize the toxic proteins present in venom. Antivenins are usually made by immunizing large animals (like horses) with small amounts of venom over time, which prompts the animal's immune system to produce antibodies against the venom. The antibody-rich serum is then collected from the immunized animal and purified for use as an antivenin.

When administered to a victim who has been envenomated, antivenins work by binding to the venom molecules, preventing them from causing further damage to the body's tissues and organs. This helps minimize the severity of symptoms and can save lives in life-threatening situations. It is essential to seek immediate medical attention if bitten or stung by a venomous creature, as antivenins should be administered as soon as possible for optimal effectiveness.

Elapid venoms are the toxic secretions produced by elapid snakes, a family of venomous snakes that includes cobras, mambas, kraits, and coral snakes. These venoms are primarily composed of neurotoxins, which can cause paralysis and respiratory failure in prey or predators.

Elapid venoms work by targeting the nervous system, disrupting communication between the brain and muscles. This results in muscle weakness, paralysis, and eventually respiratory failure if left untreated. Some elapid venoms also contain hemotoxins, which can cause tissue damage, bleeding, and other systemic effects.

The severity of envenomation by an elapid snake depends on several factors, including the species of snake, the amount of venom injected, the location of the bite, and the size and health of the victim. Prompt medical treatment is essential in cases of elapid envenomation, as the effects of the venom can progress rapidly and lead to serious complications or death if left untreated.

Arthropod venoms are toxic secretions produced by the venom glands of various arthropods, such as spiders, scorpions, insects, and marine invertebrates. These venoms typically contain a complex mixture of bioactive molecules, including peptides, proteins, enzymes, and small molecules, which can cause a range of symptoms and effects in humans and other animals.

The specific composition of arthropod venoms varies widely depending on the species and can be tailored to serve various functions, such as prey immobilization, defense, or predation. Some arthropod venoms contain neurotoxins that can disrupt nerve function and cause paralysis, while others may contain cytotoxins that damage tissues or hemotoxins that affect the blood and cardiovascular system.

Arthropod venoms have been studied for their potential therapeutic applications, as some of their bioactive components have shown promise in treating various medical conditions, including pain, inflammation, and neurological disorders. However, it is important to note that arthropod venoms can also cause severe allergic reactions and other adverse effects in susceptible individuals, making it essential to exercise caution when handling or coming into contact with venomous arthropods.

Peptides are short chains of amino acid residues linked by covalent bonds, known as peptide bonds. They are formed when two or more amino acids are joined together through a condensation reaction, which results in the elimination of a water molecule and the formation of an amide bond between the carboxyl group of one amino acid and the amino group of another.

Peptides can vary in length from two to about fifty amino acids, and they are often classified based on their size. For example, dipeptides contain two amino acids, tripeptides contain three, and so on. Oligopeptides typically contain up to ten amino acids, while polypeptides can contain dozens or even hundreds of amino acids.

Peptides play many important roles in the body, including serving as hormones, neurotransmitters, enzymes, and antibiotics. They are also used in medical research and therapeutic applications, such as drug delivery and tissue engineering.

Sodium channels are specialized protein structures that are embedded in the membranes of excitable cells, such as nerve and muscle cells. They play a crucial role in the generation and transmission of electrical signals in these cells. Sodium channels are responsible for the rapid influx of sodium ions into the cell during the initial phase of an action potential, which is the electrical signal that travels along the membrane of a neuron or muscle fiber. This sudden influx of sodium ions causes the membrane potential to rapidly reverse, leading to the depolarization of the cell. After the action potential, the sodium channels close and become inactivated, preventing further entry of sodium ions and helping to restore the resting membrane potential.

Sodium channels are composed of a large alpha subunit and one or two smaller beta subunits. The alpha subunit forms the ion-conducting pore, while the beta subunits play a role in modulating the function and stability of the channel. Mutations in sodium channel genes have been associated with various inherited diseases, including certain forms of epilepsy, cardiac arrhythmias, and muscle disorders.

Sequence homology, amino acid, refers to the similarity in the order of amino acids in a protein or a portion of a protein between two or more species. This similarity can be used to infer evolutionary relationships and functional similarities between proteins. The higher the degree of sequence homology, the more likely it is that the proteins are related and have similar functions. Sequence homology can be determined through various methods such as pairwise alignment or multiple sequence alignment, which compare the sequences and calculate a score based on the number and type of matching amino acids.

Tetrodotoxin (TTX) is a potent neurotoxin that is primarily found in certain species of pufferfish, blue-ringed octopuses, and other marine animals. It blocks voltage-gated sodium channels in nerve cell membranes, leading to muscle paralysis and potentially respiratory failure. TTX has no known antidote, and medical treatment focuses on supportive care for symptoms. Exposure can occur through ingestion, inhalation, or skin absorption, depending on the route of toxicity.

Potassium channels are membrane proteins that play a crucial role in regulating the electrical excitability of cells, including cardiac, neuronal, and muscle cells. These channels facilitate the selective passage of potassium ions (K+) across the cell membrane, maintaining the resting membrane potential and shaping action potentials. They are composed of four or six subunits that assemble to form a central pore through which potassium ions move down their electrochemical gradient. Potassium channels can be modulated by various factors such as voltage, ligands, mechanical stimuli, or temperature, allowing cells to fine-tune their electrical properties and respond to different physiological demands. Dysfunction of potassium channels has been implicated in several diseases, including cardiac arrhythmias, epilepsy, and neurodegenerative disorders.

Ion channels are specialized transmembrane proteins that form hydrophilic pores or gaps in the lipid bilayer of cell membranes. They regulate the movement of ions (such as sodium, potassium, calcium, and chloride) across the cell membrane by allowing these charged particles to pass through selectively in response to various stimuli, including voltage changes, ligand binding, mechanical stress, or temperature changes. This ion movement is essential for many physiological processes, including electrical signaling, neurotransmission, muscle contraction, and maintenance of resting membrane potential. Ion channels can be categorized based on their activation mechanisms, ion selectivity, and structural features. Dysfunction of ion channels can lead to various diseases, making them important targets for drug development.

"Bothrops" is a genus of venomous snakes commonly known as lancehead vipers, found primarily in Central and South America. The name "Bothrops" comes from the Greek words "bothros," meaning pit, and "ops," meaning face, referring to the deep pits on the sides of their heads that help them detect heat and locate prey. These snakes are known for their aggressive behavior and potent venom, which can cause severe pain, swelling, tissue damage, and potentially life-threatening systemic effects if left untreated.

The genus "Bothrops" includes over 30 species of pit vipers, many of which are considered medically important due to their ability to inflict serious envenomations in humans. Some notable examples include Bothrops asper (the terciopelo or fer-de-lance), Bothrops atrox (the common lancehead), and Bothrops jararaca (the jararaca).

If you encounter a snake of this genus, it is essential to seek medical attention immediately if bitten, as the venom can cause significant harm if not treated promptly.

Molecular models are three-dimensional representations of molecular structures that are used in the field of molecular biology and chemistry to visualize and understand the spatial arrangement of atoms and bonds within a molecule. These models can be physical or computer-generated and allow researchers to study the shape, size, and behavior of molecules, which is crucial for understanding their function and interactions with other molecules.

Physical molecular models are often made up of balls (representing atoms) connected by rods or sticks (representing bonds). These models can be constructed manually using materials such as plastic or wooden balls and rods, or they can be created using 3D printing technology.

Computer-generated molecular models, on the other hand, are created using specialized software that allows researchers to visualize and manipulate molecular structures in three dimensions. These models can be used to simulate molecular interactions, predict molecular behavior, and design new drugs or chemicals with specific properties. Overall, molecular models play a critical role in advancing our understanding of molecular structures and their functions.

Sodium is an essential mineral and electrolyte that is necessary for human health. In a medical context, sodium is often discussed in terms of its concentration in the blood, as measured by serum sodium levels. The normal range for serum sodium is typically between 135 and 145 milliequivalents per liter (mEq/L).

Sodium plays a number of important roles in the body, including:

* Regulating fluid balance: Sodium helps to regulate the amount of water in and around your cells, which is important for maintaining normal blood pressure and preventing dehydration.
* Facilitating nerve impulse transmission: Sodium is involved in the generation and transmission of electrical signals in the nervous system, which is necessary for proper muscle function and coordination.
* Assisting with muscle contraction: Sodium helps to regulate muscle contractions by interacting with other minerals such as calcium and potassium.

Low sodium levels (hyponatremia) can cause symptoms such as confusion, seizures, and coma, while high sodium levels (hypernatremia) can lead to symptoms such as weakness, muscle cramps, and seizures. Both conditions require medical treatment to correct.

Fish venoms are toxic substances produced by some species of fish, primarily found in their spines, fins, or skin. These venoms are used for defense against predators and can cause painful injuries to humans who come into contact with them. The venomous fishes belong to various taxonomic groups, including catfishes (order Siluriformes), stingrays (superorder Batoidea), scorpionfishes (family Scorpaenidae), weevers (family Trachinidae), and stonefishes (family Synanceiidae).

The composition of fish venoms varies among species, but they typically contain a mixture of proteins, enzymes, and small molecules that can induce local and systemic effects. Local reactions usually involve pain, swelling, and redness at the site of the injury, while systemic symptoms may include nausea, vomiting, difficulty breathing, paralysis, or even death in severe cases.

Immediate medical attention is required for fish venom injuries to manage pain, prevent infection, and treat potential systemic effects. Treatment usually involves removing any remaining venomous spines or fragments, immersing the wound in hot water (>45°C/113°F) to denature the proteins in the venom, and administering appropriate analgesics, antibiotics, and supportive care as needed.

Ant venoms are toxic secretions produced by various species of ants as a defense mechanism against predators and to incapacitate their prey. The composition of ant venoms varies among different species, but they typically contain a mixture of alkaloids, peptides, and proteins that can cause a range of symptoms in humans, from mild irritation and pain to severe allergic reactions.

The venom of some ant species, such as the fire ants (Solenopsis spp.), contains alkaloids that can cause painful pustules and itching, while the venom of other species, like the bulldog ants (Myrmecia spp.), contains proteins that can induce severe allergic reactions and even anaphylactic shock in sensitive individuals.

Understanding the composition and effects of ant venoms is important for developing effective treatments for ant stings and for studying their potential therapeutic applications, such as using ant venom components in pain management or as leads for new drug development.

Elapidae is a family of venomous snakes, also known as elapids. This family includes many well-known species such as cobras, mambas, death adders, and sea snakes. Elapids are characterized by their fixed fangs, which are located at the front of the upper jaw and deliver venom through a hollow canal. The venom of these snakes is typically neurotoxic, causing paralysis and respiratory failure in prey or attackers.

Elapids are found throughout the world, with the greatest diversity occurring in tropical regions. They vary widely in size, from small species like the death adders that measure only a few inches long, to large species like the king cobra, which can reach lengths of up to 18 feet (5.5 meters).

Elapids are generally shy and avoid confrontations with humans whenever possible. However, they will defend themselves aggressively if threatened or cornered. Bites from elapid snakes can be medically significant and may require antivenom treatment.

High-performance liquid chromatography (HPLC) is a type of chromatography that separates and analyzes compounds based on their interactions with a stationary phase and a mobile phase under high pressure. The mobile phase, which can be a gas or liquid, carries the sample mixture through a column containing the stationary phase.

In HPLC, the mobile phase is a liquid, and it is pumped through the column at high pressures (up to several hundred atmospheres) to achieve faster separation times and better resolution than other types of liquid chromatography. The stationary phase can be a solid or a liquid supported on a solid, and it interacts differently with each component in the sample mixture, causing them to separate as they travel through the column.

HPLC is widely used in analytical chemistry, pharmaceuticals, biotechnology, and other fields to separate, identify, and quantify compounds present in complex mixtures. It can be used to analyze a wide range of substances, including drugs, hormones, vitamins, pigments, flavors, and pollutants. HPLC is also used in the preparation of pure samples for further study or use.

Mollusk venoms are toxic substances produced by certain species of mollusks, a group of marine animals that includes snails, slugs, clams, octopuses, and squids. These venoms are primarily used for defense against predators or for hunting prey. They can contain a variety of bioactive molecules, such as proteins, peptides, and neurotoxins, which can cause a range of effects on the victim's body, from mild irritation to paralysis and death.

One well-known example of a mollusk venom is that of the cone snail, which uses its venom to capture prey. The venom of some cone snails contains compounds called conotoxins, which are highly selective for specific ion channels in the nervous system and can cause paralysis or death in their victims. These conotoxins have been studied for their potential therapeutic applications, such as pain relief and treatment for neurological disorders.

It's important to note that while some mollusk venoms can be dangerous or even deadly to humans, most species of mollusks are not harmful to people. However, it's always a good idea to exercise caution when handling any marine animals, as even non-venomous species can cause injury with their sharp shells or other structures.

Cnidarian venoms are toxic substances produced by members of the phylum Cnidaria, which includes jellyfish, sea anemones, corals, and hydroids. These venoms are primarily contained in specialized cells called cnidocytes or nematocysts, which are found in the tentacles of these animals. When a cnidarian comes into contact with prey or a potential threat, the cnidocytes discharge, injecting the venom into the target through a hollow tubule.

Cnidarian venoms are complex mixtures of bioactive molecules, including proteins, peptides, and small organic compounds. The composition of these venoms can vary significantly between different cnidarian species, as well as between different life stages or sexes of the same species. Some cnidarian venoms primarily serve a defensive function, causing pain or other unpleasant symptoms in potential predators, while others have a more offensive role, helping to immobilize prey before consumption.

The effects of cnidarian venoms on humans can range from mild irritation and stinging sensations to severe pain, swelling, and allergic reactions. In some cases, cnidarian envenomations can lead to more serious complications, such as respiratory distress, cardiac arrhythmias, or even death, particularly in individuals with underlying health conditions or allergies to the venom.

Research on cnidarian venoms has led to important insights into the biochemistry and molecular mechanisms of pain, inflammation, and neurotoxicity, as well as the development of new therapeutic strategies for treating various medical conditions. Additionally, understanding the structure and function of cnidarian venom components has inspired the design of novel bioactive molecules with potential applications in drug discovery, pest control, and other areas of biotechnology.

I'm sorry for any confusion, but the term "Reptilian Proteins" does not have a specific or established medical or scientific meaning. The term "reptilian" generally refers to characteristics of reptiles, and proteins are complex molecules that perform various functions within all living organisms, including reptiles. However, there isn't a recognized category or classification called "Reptilian Proteins" in the field of medicine or biology. If you have any questions about specific reptile-related proteins or reptile physiology, I would be happy to try and help with those!

Domestic predators of scorpions, such as chickens and turkeys, can help to reduce the risk to a household. Scorpion venom is a ... This fluorescence may have an active role in the scorpion's ability to detect light. Scorpion venom serves to kill or paralyze ... which are also immune to their venom. In one study, 70% of the latter's droppings contained scorpion fragments. Scorpions host ... scorpions of Madagascar) Scorpions are found on all continents except Antarctica. The diversity of scorpions is greatest in ...
Tityus scorpions are best known for their venom and potent sting. The genus contains several dangerously venomous scorpions, ... Venom is energetically expensive to create, so scorpions only use their stinger when seriously threatened. Scorpions in the ... metuendus Scorpion Venoms in Colombia". Toxins. 13 (11): 757. doi:10.3390/toxins13110757. ISSN 2072-6651. PMC 8625436. PMID ... Scorpion stings are the most common cause of envenomation in Brazil, and are seen as a risk in urban environments. Scorpions in ...
Scorpions, spiders and pseudoscorpions secrete venom from specialized glands to kill prey or defend themselves. Their venom ... In scorpions, pseudoscorpions, and ricinuleids the pedipalps ends in a pair of pinchers, and in whip scorpions, Schizomida, ... "The Enzymatic Core of Scorpion Venoms". Toxins. 14 (4): 248. doi:10.3390/toxins14040248. PMC 9030722. PMID 35448857. Walter, A ... whip scorpions with divided exoskeletons (350 species) Scorpiones - scorpions (2,700 species) Solifugae - solpugids, ...
Gueron and his team, who were the first in the field of medicine to have found that yellow scorpion venom evokes potent ... Yarom, Rena; Gueron, M.; Braun, K. (1970). "Scorpion Venom Cardiomyopathy". Pathobiology. 35 (1-3): 114-117. doi:10.1159/ ... Gueron is best known for a research he has managed regarding the treatment of scorpion evenomation and its affection on the ... Gueron's work, his treatments in patients and studies on severity of scorpion stings were published in the largest medical ...
... is an α-scorpion toxin found in the venom of the Chinese scorpion Buthus martensi Karsch. By blocking the ... is a neurotoxin that is expressed and secreted by the venom gland of the scorpion Buthus martensii Karsch (Chinese Scorpion). ... An overview of toxins and genes from the venom of the Asian scorpion Buthus martensi Karsch. Toxicon, 40, 1239-1258 Gwee M.C.E ... Nirthanan S., Khoo H.-E., Gopalakrishnakone P., Kini R.M., Cheah L.S. (2002). Autonomic effects of some scorpion venoms and ...
"Venom Costs and Optimization in Scorpions". Frontiers in Ecology and Evolution. 7. doi:10.3389/fevo.2019.00196. ISSN 2296-701X ... It is the northernmost species of scorpion, the only scorpion found in Canada, and one of the scorpions with the broadest ... Young scorpions make their first hunt around 13 to 14 days. P. boreus scorpions have been observed to prey on grasshoppers, ... It is the only scorpion found in Canada, as well as the northernmost species of scorpion in the world, with specimens collected ...
As small buthid scorpions they also carry a potent venom, with a researchers account of the sting comparing the pain to a sharp ... "Sand Scorpions - Facts about Sand Scorpions , Orkin". www.orkin.com. Retrieved 2023-06-16. "Scorpion , San Diego Zoo Animals & ... Lychas buchari, also known as the yellow sand scorpion or Buchar's scorpion, is a species of small scorpion in the Buthidae ... "Venom Costs and Optimization in Scorpions". Frontiers in Ecology and Evolution. 7. doi:10.3389/fevo.2019.00196. ISSN 2296-701X ...
Scorpion venoms can be toxic for mammals, insects, and crustaceans. Pi4 is lethal in mice upon injection in the ventricular ... "Two similar peptides from the venom of the scorpion pandinus imperator, one highly effective blocker and the other inactive on ... Pi4 (α-KTx 6.4) is a short toxin from the scorpion Pandinus imperator that blocks specific potassium channels. The name Pi4 is ... "Kalium: Scorpion Toxins Active on Potassium Channels". kaliumdb.org. Retrieved 2016-10-09. Dauplais, Marc; Lecoq, Alain; Song, ...
"Scorpion of the month March - Tityus fasciolatus - Scorpions - The Venom List - For All Things Venomous!". venomlist.com. ... T. fasciolatus is a species of medical importance, its venom is molecular and very similar to T. serrulatus, its venom contains ... "General characterization of Tityus fasciolatus scorpion venom. Molecular identification of toxins and localization of linear B- ... Tityus fasciolatus is a species of scorpion from the family Buthidae. The species are 4.5-8.5 centimetres (1.8-3.3 in) in ...
Vetter, I.; Gilding, E.K.; Durek, T. (16 September 2020). "Australian stinging trees inject scorpion-like venom. The pain lasts ... 16 September 2020). "Neurotoxic peptides from the venom of the giant Australian stinging tree". Science Advances. American ... "The Gympie-Gympie stinging tree contains the same toxins as that of spiders and scorpions, scientists find". Australian ...
Bougis, PE; Martin-Eauclaire, MF (25 June 2015). "Shal-type (Kv4.x) potassium channel pore blockers from scorpion venoms". ... This subfamily currently exists of six very homologous peptides, originating from scorpion venom: Aa1, AaTX1, AaTX2, AmmTX3, ... AmmTX3, produced by Androctonus mauretanicus, is a scorpion toxin of the α-KTX15 subfamily. The toxin is known for its ability ... Androctonus mauretanicus is a fat-tailed scorpion with its origins in North Africa. AmmTX3 has a molecular mass of 3823.5 Da ...
... is a peptide that can be isolated from the venom produced by the glands of Isometrus maculatus (lesser brown scorpion ... Quintero-Hernández, V.; Jiménez-Vargas, J. M.; Gurrola, G. B.; Valdivia, H. H.; Possani, L. D. (2013-12-15). "Scorpion venom ... ImKTx88 is a selective inhibitor of the Kv1 ion channel family that can be isolated from the venom of the Isometrus maculatus ( ... The name ImKTx88 is derived from the scorpion species, Isometrus maculatus, its target, K channels, the abbreviation of toxin, ...
... is a single chain β-scorpion neurotoxic peptide and the primary toxin in the venom of the Centruroides noxius Hoffmann scorpion ... This scorpion produces a venom in which the Cn2 toxin is the most abundant component; it comprises approximately 6.8% of the ... "Amino acid sequence and immunological characterization with monoclonal antibodies of two toxins from the venom of the scorpion ... "The amino terminal sequence of several toxins from the venom of the Mexican scorpion Centruroides noxius Hoffmann". Carlsberg ...
WaTx originates from the venom of the Australian Black Rock Scorpion (Urodacus manicatus). WaTx belongs to the κ-KTx family, as ... Quintero-Hernández, V.; Jiménez-Vargas, J.M.; Gurrola, G.B.; Valdivia, H.H.; Possani, L.D. (December 2013). "Scorpion venom ... Wasabi receptor toxin (WaTx) is the active component of the venom of the Australian black rock scorpion Urodacus manicatus. ... This scorpion toxin was named WaTx because it targets TRPA1 in a similar fashion as plant-derived irritants, such as mustard ...
Although its venom contains a weak neurotoxin called maurotoxin, S. maurus is not a dangerous scorpion for humans. There are no ... also known as the large-clawed scorpion or Israeli gold scorpion and lesser known as Zerachia scorpion. This is a small/medium- ... There are many sub-species of this scorpion, 19 of which were described by Fet et al. The venom of Scorpio maurus contains a ... Wood, Trina (April 15, 2016). "Scorpion Venom Yields Clues for Developing Better Pharmaceuticals". University of California, ...
It is native to Brazil, and its venom is extremely toxic. It is the most dangerous scorpion in South America and is responsible ... Tityus serrulatus, the Brazilian yellow scorpion, is a species of scorpion of the family Buthidae. ... "Tityus serrulatus Scorpion Venom and Toxins: An Overview". Protein and Peptide Letters. 16 (8): 920-932. doi:10.2174/ ... serrulatus scorpions living in the urban spaces of São Paulo, contributing to an increase in reported scorpion stings in Brazil ...
Kurotoxin is from venom of the scorpion Parabuthus. In neurons in the thalamus, kurtoxin decreases high threshold calcium ... Calcicludine is from venom of Dendroaspis angusticeps, which is a green mamba. It has the ability to voltage-dependently block ... The toxins from this venom which show selectivity for P-type channels are ω-agatoxin IVA and ω-agatoxin IVB. Each of these ... ω-Grammotoxin SIA is a peptide toxin derived from the venom of the spider Grammostola spatulata. It acts to modify the P-type ...
The venom of this scorpion has led to the discovery of 77 different peptides, mainly related to ion channel toxins. Out of ... BmKTX is one of the toxins present in the venom of scorpion, found in mostly Mongolia, Korea and China. BmKTX belongs to the α- ... scorpion venom". Toxicon. 32 (2): 191-200. doi:10.1016/0041-0101(94)90108-2. Goudet, Cyril; Chi, Cheng-Wu; Tytgat, Jan ( ... "An overview of toxins and genes from the venom of the Asian scorpion Buthus martensi Karsch". Toxicon. 40 (9): 1239-1258. doi: ...
NTX accounts for only about 1% of the scorpion venom. NTX is one of the best-studied toxic peptides from scorpion venoms. It ... Although the venom of Centruroides noxius Hoffmann is the most toxic of all the Mexican scorpions, it is less medically ... Noxiustoxin (NTX) is a toxin from the venom of the Mexican scorpion Centruroides noxius Hoffmann which block voltage-dependent ... NTX was first purified from homogenized crude venom extract of the Mexican scorpion Centruroides noxius Hoffmann, found in the ...
Toxic: botulism, venom of bark scorpion (species Centruroides), some neurotoxic snake venoms. Autoimmune: myasthenia gravis. ...
... (ViCaTx1) is a short peptide toxin found in the venom of scorpion Vaejovis intrepidus. It is one of a group of ... Intrepicalcin is a toxin derived from the venom gland of the scorpion Vaejovis intrepidus . This species belongs to the family ... a peptide from Hadrurus gertschi scorpion venom with pharmacological activity on ryanodine receptors". British Journal of ... Intrepicalcin (ViCaTx1) belongs to the scorpion calcin family. The structure of calcins is specified by the Inhibitor Cystine ...
"Scientific American, 'Scorpion Venom Could Lead to New Antibiotics'". Scientific American. Archived from the original on 2019- ... "Scorpion venom component can reduce severity of rheumatoid arthritis". ScienceDaily. Retrieved 2020-08-06. Crowell, Rachel. " ... "Rheumatoid arthritis: Scorpion venom compound may halt progression". www.medicalnewstoday.com. 2018-02-27. Retrieved 2020-08-06 ... a component of scorpion venom - as a preventative measure against multiple sclerosis in animals. Throughout her postdoctoral ...
Scorpions have two venom glands that produce venom. This venom is used for hunting and self-defense. Only a small portion of ... "Scorpion Reproduction - Scorpion Facts and Information". Retrieved 2020-04-23. "Deathstalker Scorpion - Scorpion Facts and ... The venom of this species is one of the most potent venoms of the Turkish scorpions, and it provokes severe symptoms in the ... The venom of scorpions in general and of this species in particular has been employed in research on treating nervous, immune, ...
The scorpion venom ErgTx also targets the hERG channel. However, ErgTx has only a 20% sequence homology with APETx1. APETx1 ... Unknown parameter SequenceUnknown parameter Amino Acid Sequence APETx1 is a peptide toxin from the venom of the sea anemone ... APETx1 is a peptide toxin purified from the venom of the sea anemone Anthopleura elegantissima, which produces multiple toxins ...
Scorpions of North America, Centruroides, Scorpions of South America, Animals described in 1863). ... Two peptide toxins have been identified in the venom: noxiustoxin, which targets voltage-gated calcium channels and calcium- ... Since most scorpions are nocturnal, they usually hide in litter and debris, or in loose barks of trees and bushes, it is mostly ... Centruroides noxius is a species of scorpion native to Mexico. This species grows from 3.5 to 5 cm in length, its body is dark ...
... scorpion and snake venom may hold cancer cure". CNN. 12 August 2014. "Live Well: How to avoid 'brain freeze' from cold drinks ... and scorpions. In 2015, Pan, Leanne Labriola, and other team members developed a portable sensor named OcuCheck that assesses ... and bee venom could help fight cancer". "Vitamin C-detecting sensor could assess eye injuries on the spot". 10 December 2015. " ... in impeding breast cancer and melanoma cell growth in laboratory settings by delivering a synthetic compound mimicking venom ...
Nisani Z (2008). Behavioral and Physiological Ecology of Scorpion Venom Expenditure: Stinging, Spraying, and Venom Regeneration ... Its venom glands store only about 10 μl of crude venom. Refilling of the glands takes 2-3 days and the lethal efficacy of the ... Species of anemones, jellyfish, ants, scorpions, spiders, and snakes are found to use their venoms frugally depending on the ... Venom optimization hypothesis was postulated by Wigger, Kuhn-Nentwig, and Nentwig from their studies of the amount of venom ...
Emperor scorpions have the same venom as a bee.The Guinness Book of Records claims a Forest Scorpion native to rural India, ... African emperor scorpion venom contains the toxins imperatoxin and pandinotoxin. Due to its docile nature, large size, and ... some species of forest scorpions are fairly similar to the emperor scorpion in size, and one scorpion, Heterometrus swammerdami ... It ends in the large receptacle containing the venom glands and is tipped with a sharp, curved stinger. Scorpion stings can be ...
Nisani, Z., & Hayes, W. K. (2015). "Venom-spraying behavior of the scorpion Parabuthus transvaalicus (Arachnida: Buthidae)". ... Nisani, Z., & Hayes, W. K. (2015). "Venom-spraying behavior of the scorpion Parabuthus transvaalicus (Arachnida: Buthidae)". ... Nisani, Z., & Hayes, W. K. (2011). "Defensive stinging by Parabuthus transvaalicus scorpions: risk assessment and venom ... Toxungen deployment offers a key evolutionary advantage compared to poisons and venoms. Poisons and venoms require direct ...
The Kalium Database is a manually curated biomedical database on K+ channel ligands found in the venom of scorpions, spiders, ... a database of potassium channel toxins from scorpion venom". Database (Oxford). baw056: baw056. doi:10.1093/database/baw056. ... The first release of the Kalium Database was dedicated to scorpion toxins only, while its second release (Kalium 2.0) included ... Kuzmenkov AI, Grishin EV, Vassilevski AA (Dec 2015). "Diversity of Potassium Channel Ligands: Focus on Scorpion Toxins". ...
... only few scorpion venom peptides without disulfide bridges have been identified and characterized. These non-disulfide-bridged ... Several hundred disulfide-bridged neurotoxic peptides have been characterized from scorpion venom; however, ... Several hundred disulfide-bridged neurotoxic peptides have been characterized from scorpion venom; however, only few scorpion ... Scorpion venom peptides without disulfide bridges IUBMB Life. 2005 Jan;57(1):13-21. doi: 10.1080/15216540500058899. ...
... some scorpions squirt venom in a diffuse spray that can get into the eyes and respiratory systems of their predators. ... Some scorpions are able to spray their venom, an ability they use defensively to try to temporarily disable predators, allowing ... In a second set of experiments, Nisani and Hayes wanted to find out if the scorpions could direct their venom at the eyes and ... "When I milked scorpions, I had to wear a mask," Nisani said. "I developed hypersensitivity to" the venom. ...
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Venoms from animals of the order Scorpionida of the class Arachnida. They contain neuro- and enzymes, ... ... SCORPION VENOMS \skˈɔːpi͡ən vˈɛnəmz], \skˈɔːpi‍ən vˈɛnəmz], \s_k_ˈɔː_p_iə_n v_ˈɛ_n_ə_m_z]\ ... Venoms from animals of the order Scorpionida of the class Arachnida. They contain neuro- and hemotoxins, enzymes, and various ...
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The shapes of toxins found in venom are helping to resolve the scorpions family tree ... He explains that while venom toxins from other creatures such as spiders and snakes are well studied, scorpion venoms are less ... Peptides found in scorpion venom have shed new light on the animals evolutionary history. The findings could offer a new way ... Different species of scorpions are similar anatomically, but the shapes of peptides within their venom reveal how closely ...
ICD-10 code T63.2X4D for Toxic effect of venom of scorpion, undetermined, subsequent encounter is a medical classification as ... Toxic effect of venom of scorpion, undetermined, subsequent encounter T63. Includes: bite or touch of venomous animal. pricked ... ICD-10-CM Code for Toxic effect of venom of scorpion, undetermined, subsequent encounter T63.2X4D ICD-10 code T63.2X4D for ... Toxic effect of venom of scorpion, undetermined, subsequent encounter is a medical classification as listed by WHO under the ...
This paper describes a new way of generating a scorpion venom gland transcriptome without sacrificing the animal, thereby ... Transcriptomes are important tools for studying the composition and expression of scorpion venom. Unfortunately, studying the ... By comparing these venom-derived transcriptomes to the traditional whole-telson transcriptomes we show that the relative ... We discuss the gland characteristics that may allow this method to be successful in scorpions and provide a review of other ...
Scorpion anti-venom serum provided by WHO and funded by Italy saves lives across southern Libya ... In total 4000 doses of scorpion anti-venom, funded by the Government of Italy were delivered by WHO to Libya and distributed to ... Libya , News , Scorpion anti-venom serum provided by WHO and funded by Italy saves lives across southern Libya ... "Last year at this time we lost 55 people, including 26 children as a result of lack of anti-scorpion serum. The number ...
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Scorpion Venom as Antidote to Cancer, Parkinsons?. The venom the scorpion is being studied in Colima, Mexico, as a possible ... Scorpion Venom as Antidote to Cancer, Parkinsons? , Waco Scorpion Control June 3, 2015 ... Another promising avenue for the use of venom proteins is in treating Parkinsons disease. Scorpion venom increases production ... Researchers have isolated about one hundred proteins from the scorpion venom, and tested each on cancer cells in the lab. These ...
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What Scorpion Is Capable of Killing a Human? What causes scorpion venom to kill? Only about a quarter of the 1,500 different ... Are Scorpions Poisonous or Non-Poisonous? One unavoidable fact about scorpions is that they are poisonous. Their venom is the ... What Is the Maximum Amount of Venom You Can Get From a Scorpion? What is the maximum amount of poison a scorpion can infuse? ... Scorpions are nocturnal animals that can be found in deserts, exotic locations, and other harsh environments. These animals ...
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Spider and Scorpion Venom The venom of spiders and scorpions are of interest to scientists for various reasons. For example, no ... Similarly, scorpion venom has shown promising results in the treatment of cancer. Different experiments have shown the venom ... There are more than 1,700 species of scorpions, and all have a venom sting. However, only 25 species have venom capable of ... Are Spiders And Scorpions Insects?. Spiders are not insects. Spiders and scorpions are not insects but instead belong to a ...
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Looking for Scorpion Venom Glands in Diablo 4 Pinch of Poison side-quest? Check our walkthrough to learn how to complete the ... Diablo IV Pinch of Poison: Where To Find Scorpion Venom Glands. Diablo IV Pinch of Poison: Where To Find Scorpion Venom Glands ... As such, lets see where to find these scorpions.. Where To Find Scorpion Venom Glands in Diablo 4. After finishing your ... You need a total of 15 Scorpion Venom Glands, and considering that the drop chance is pretty high, you wont have to spend too ...
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