Abstract
The skin secretion of the caecilian Siphonops paulensis (SpSS) induces a time-and dose-dependent hemolytic response on red blood cells (RBC). When RBC from various animals species were subjected to the action of SpSS, a range of sensitivities was evident, sheep erythrocytes being the most susceptible, human, mouse and rabbit having moderate susceptibility, cow, snake and toad erythrocytes being more resistant, while S. paulensis RBC were entirely resistant. The hemolytic activity of SpSS was inhibited at temperatures higher than 60 degrees C. Both trypsin- and chymotrypsin-treated SpSS were ineffective in inducing RBC lysis. The treatment of SpSS with sheep RBC ghosts reduced its activity. There is no phospholipase activity in the SpSS.
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