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Domoic acid Domoic acid , also called Amnesic Shellfish Poison (ASP), is a chemical compound (an acid ) found associated with certain algal blooms . The chemical can bioaccumulate in marine organisms that feed on the phytoplankton , such as shellfish , anchovies , and sardines. In mammals , including humans , domoic acid acts as a neurotoxin , causing short term memory loss, brain damage, and death in severe cases. Red tidess are associated with the phenomenon of ASP.
In the brain, domoic acid especially damages the hippocampus and amygdaloid nucleus. It damages the neurons by activating AMPA and kainate receptors, causing an influx of calcium . Although calcium flowing into cells is a normal event, the uncontrolled increase of calcium causes the cell to degenerate.
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