Lyngbyatoxin-a

Lyngbyatoxin-a is a toxin produced by the cyanobacteria Lyngbya majuscula. It is a potent skin irritant and tumor promoter, and is associated with the condition seaweed dermatitis.

History

Lyngbyatoxin-a was first isolated in 1977 from Lyngbya majuscula, a species of cyanobacteria found in tropical and subtropical marine environments. The toxin was named after the genus of the cyanobacteria from which it was isolated.

Structure and properties

Lyngbyatoxin-a is a lipophilic compound with a complex terpenoid structure. It is a potent activator of Protein Kinase C, a family of enzymes involved in cell signaling and regulation.

Toxicity

Lyngbyatoxin-a is a potent skin irritant and tumor promoter. It is associated with the condition seaweed dermatitis, a skin rash caused by contact with certain species of marine cyanobacteria. The toxin can also cause severe eye irritation and damage to the cornea.

Treatment and prevention

Avoidance of areas with high concentrations of Lyngbya majuscula is the most effective way to prevent exposure to lyngbyatoxin-a. In case of exposure, immediate washing of the affected area with fresh water and soap can help to remove the toxin. Medical treatment may be necessary in severe cases.

See also

• Cyanotoxin
• Marine toxins
• Seaweed dermatitis

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Lyngbyatoxin-a

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