Table 1.

Characteristics of the most commonly studied cyanotoxins and prymnesins.

Common Name	Chemical Group	Effect/Target in Mammals
Microcystins	Heptapeptide	Cytotoxicity; genotoxic effects in liver
Nodularins	Pentapeptide	Cytotoxicity; liver
Anatoxin-a	Bicyclic amine alkaloid	Neurotoxicity
Saxitoxins	Tricyclic perhydropurine alkaloids	Neurotoxicity
β-N-methylamino-L-alanine	Amino acid	Neurotoxicity
Cylindrospermopsins	Polycyclic uracil with guanidine and sulfate group	Multitarget alkaloids
Prymnesins	Polyether polycyclic core with several conjugate double and triple bonds	Hemolytic activity and ichthyotoxicity