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Amnesic shellfish poison
Summary
Amnesic shellfish poisoning (ASP) is a neurotoxic illness caused by consuming shellfish contaminated with domoic acid. This toxin can lead to severe neurological damage, including memory loss, and necessitates monitoring of shellfish harvesting areas.
Area of Science:
- Marine Biology
- Neurotoxicology
- Food Safety
Background:
- Amnesic shellfish poisoning (ASP) is a human health issue linked to the consumption of shellfish contaminated with domoic acid.
- Domoic acid is a potent neurotoxin produced by certain marine phytoplankton species.
Observation:
- Ingestion of domoic acid leads to neuronal degeneration and necrosis, particularly in the hippocampus.
- A significant outbreak in Canada in 1987 resulted in 150 cases, 19 hospitalizations, and 4 deaths due to contaminated mussel consumption.
Findings:
- Symptoms of ASP range from gastrointestinal distress to severe neurotoxic effects, including hallucinations, memory loss, and coma.
- Regulatory limits for domoic acid in shellfish harvesting areas are established to prevent human exposure.
Implications:
- Effective monitoring programs are crucial for public health and the management of shellfish resources.
- Understanding the chemistry, sources, metabolism, and toxicology of domoic acid is vital for mitigating ASP risks.