Palytoxin targets the sodium-potassium pump protein by binding to the molecule such that the molecule is locked in a position where it allows passive transport of both the sodium and potassium ions, thereby destroying the ion gradient that is essential for most cells. It also diminishing the supply of oxygen to
the myocardium, and can cause death within minutes. (L992,A298 ).
来源:Toxin and Toxin Target Database (T3DB)
毒理性
致癌物分类
对人类不具有致癌性(未被国际癌症研究机构IARC列名)。
No indication of carcinogenicity to humans (not listed by IARC).
Palytoxin poisoning can cause multiple clinical effects, including paresthesia, dysguesia, hypertension, respiratory depression, and coma. Other health effects include tachycardia, unstable blood pressure, hemolysis (destruction of red blood cells). The onset of symptoms is rapid, and death usually follows just minutes after. Early death is probably due to intense spasm of the coronary vascular smooth muscle, resulting in marked reduction in blood flow. This may be an early manifestation of what later becomes a general necrotizing effect of palytoxin on blood vessels, which ultimately causes cell destruction throughout the body. The delayed deaths may be the result of a less profound but widespread decrease in blood flow and oxygen supply, causing
ischemia and, ultimately, anoxia in major organ systems. Palytoxin can cause marked irritation and tissue injury when applied topically to the skin or eyes of animals. (L992, A297).
Typical symptoms of palytoxin poisoning are angina-like chest pains, asthma-like breathing difficulties, and an electrocardiogram showing an exaggerated T wave (L992).