Abstract
Ion-channels are essential components of excitable cells. This fact has been exploited in the development of anthelmintic agents; the majority of which act on nematode ion channels. The purpose of this review is to describe the site of action of some frequently used anthelmintic compounds: nAChRs and levamisole/pyrantel; Glu-Cls and avermectins/mylbemycins; GABA receptors and piperazine. Also described is some of the physiological and pharmacological data on other nematode muscle ion-channels which may prove attractive targets for future anthelmintic development: Ca2+ activated Cl(-) channels; peptide gated chloride Cl(-) channels; Ca2+ channels and potassium channels. Emphasis is placed on the pharmacological and physiological data from parasite tissue. Information on the genes involved in ion-channel formation and modulation are reviewed in detail elsewhere in this issue.
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