... ouabain, a natural blocker of the Na+pump and an inhibitor of palytoxin action, have pro-vided interesting findings. Through the partial inhibition of Na+⁄ K+-ATPase, and regardless of ... Louzao, Isabel R. Ares and Eva CagideDepartamento de Farmacologia, Facultad de Veterinaria, Universidad de Santiago de Compostela, Lugo, SpainIntroduction Palytoxin is a potent marine toxin that ... moleculeconsists of a long, partially unsaturated, aliphaticbackbone with spaced cyclic ethers and 64 chiralcenters. Examination of the structure shows that thereis, in fact, a group of different palytoxins,...