Anthelmintic activity

Anthelmintic activity refers to the pharmacological property of a substance to expel or destroy parasitic worms (helminths), such as nematodes, cestodes, and trematodes, from the host body. It is a broad phenotypic classification of drug action rather than a specific molecular target like a single receptor or enzyme. Substances exhibiting this activity work by exploiting physiological and biochemical differences between the parasite and the host, often targeting the parasite's nervous system, energy metabolism, or structural proteins (e.g., tubulin). This activity is fundamental to the treatment of helminthiasis, a group of neglected tropical diseases that affects over a billion people worldwide, particularly in developing regions. Because 'Anthelmintic activity' describes an effect, the actual molecular targets involve a diverse array of proteins including beta-tubulin, nicotinic acetylcholine receptors, and glutamate-gated chloride channels.

Other names

Antiparasitic activityHelminthicidal activityVermifuge activityVermicidal activity

Anthelmintic activity is achieved through multiple distinct molecular mechanisms depending on the drug class, including the inhibition of microtubule polymerization (benzimidazoles), activation of glutamate-gated chloride channels (macrocyclic lactones), agonism of nicotinic acetylcholine receptors (imidazothiazoles), and increasing cell membrane permeability to calcium ions (pyrazinoisoquinolines).