Toxins Flashcards
1
Q
Related to spoiled dark meat fish
A
Histamine toxin due to scombroid poisoning
Bacerial histidine decarboxylase converts histidine to histamine
mimics anaphylaxis
2
Q
Pufferfish
A
Tetrodotoxin
binds fast voltage Na channels in cardiac and nerve tissues preventing depolarization
AR: paresthesias, weakness, loss of reflexes
3
Q
Reef fish
A
Ciguatoxin
opens Na channels causing depolarization
AR: perioral numbness, reversal of hot and cold sensations, heart block