ABVT key terms

Any clinically evident illness or pathologic state caused by exposure to a poison or toxin, whether the source is a plant, drug, chemical, or animal venom.

A substance capable of producing harmful effects in a living organism; the agent responsible for injury when it reaches a susceptible tissue in sufficient amount.

A poisonous substance produced biologically, such as by a plant, bacterium, fungus, or animal, as opposed to a synthetic chemical or elemental poison.

A toxin delivered by an animal through a bite, sting, or spine, typically injected into the victim rather than being ingested or absorbed from the environment.

The clinical event of toxin being introduced into a patient's tissues by an animal's bite or sting, with effects depending on species, dose, and body site.

An antibody-based product made from immunized animal serum that binds and neutralizes specific venom components; most effective when given early after envenomation.

A therapeutic agent that specifically counteracts a poison's effect, either by binding it, blocking its action, or restoring a physiologic process the poison disrupted.

A molecule that binds metal ions tightly to form a stable complex, allowing the metal to be excreted and reducing its toxic effects on tissues.

The amount of a substance administered or absorbed per unit of body weight or surface area, usually expressed in milligrams per kilogram.

The contact between an organism and a toxicant, described by route, amount, frequency, and duration; a necessary step before any absorbed dose can occur.

The pathway by which a toxicant enters the body, such as ingestion, inhalation, dermal contact, or injection; it strongly influences absorption speed and clinical signs.

The movement of a toxicant from the site of contact, such as gut, lung, or skin, into the bloodstream or lymph, determining how much reaches target tissues.

The fraction of an administered dose that reaches the systemic circulation unchanged, which affects both the intensity and timing of toxic effects.

The movement of an absorbed toxicant through the body via blood and into tissues, influenced by blood flow, lipid solubility, protein binding, and tissue affinity.

A calculated apparent space relating the amount of drug or toxicant in the body to its plasma concentration; large values suggest extensive tissue uptake.

The enzymatic transformation of a toxicant, usually in the liver, which may detoxify it or convert it into a more reactive and harmful intermediate.

The metabolic conversion of a relatively harmless parent compound into a reactive metabolite that causes cellular injury, such as oxidation of acetaminophen to a toxic intermediate.

A short-lived, chemically unstable product of metabolism that can bind cellular proteins, lipids, or DNA and trigger tissue damage or immune reactions.

The removal of a toxicant or its metabolites from the body, primarily through urine and bile but also via feces, exhaled air, milk, and sweat.

The time required for the amount or concentration of a substance in the body to decrease by half, reflecting how quickly it is eliminated.

The volume of blood or plasma cleared of a substance per unit time; a key measure of elimination capacity that determines steady-state concentrations.

A cycle in which a substance excreted in bile is reabsorbed from the intestine and returned to the liver, prolonging its presence in the body.

The observed relationship between increasing doses of a substance and the magnitude of the resulting effect, used to characterize potency and hazard.

The dose below which a toxic effect is not expected to occur in a population, reflecting the body's capacity to detoxify or repair damage.

The highest dose tested in a study that produces no statistically or biologically significant harmful effect in the exposed group.

The lowest dose tested in a study at which a statistically or biologically significant adverse effect is detected in the exposed group.

The dose of a substance expected to kill half of a test population under defined conditions; a standard measure of acute toxicity.

Harmful effects that develop soon after a single exposure or a short series of exposures, often within hours to a few days.

Harmful effects resulting from repeated or prolonged exposure over weeks, months, or years, often involving cumulative tissue damage or organ dysfunction.

The progressive buildup of a substance in an organism over time when intake exceeds elimination, potentially raising tissue concentrations with continued exposure.

The increase in concentration of a persistent substance at successively higher levels of a food chain, exposing top predators to the greatest body burdens.

A cellular antioxidant and conjugating agent that protects tissues by binding reactive metabolites and neutralizing oxidative stress; depletion increases susceptibility to injury.

A state in which reactive oxygen species overwhelm the body's antioxidant defenses, damaging lipids, proteins, and DNA and contributing to many toxicoses.

A synthetic chemical that resists environmental breakdown, accumulates in fat, and travels long distances, posing long-term risks to animals and ecosystems.

Toxicosis caused by metals such as lead, mercury, arsenic, or zinc, which interfere with enzymes and cellular processes and often require chelation therapy.

The period that must pass after a drug is given to a food-producing animal before its meat, milk, or eggs can be sold for human consumption.

A trace amount of a drug, pesticide, or its metabolites remaining in animal tissues or products after administration or exposure has ended.

The clinical condition resulting from exposure to a harmful substance, recognized by history of exposure plus compatible signs and laboratory findings.