Abstract
Tributyltin inhibited compound 48/80-induced histamine release from rat serosal mast cells in a dose-related manner. Triphenyltin and tripropyltin also showed a strong inhibitory effect on the histamine release and the degree of the inhibition was the same as that of tributyltin. The inhibitory effects of other organometals were much smaller than those of the organotins. Tributyltin and triphenyltin also showed a tendency to inhibit histamine release induced by concanavalin A + phosphatidylserine and calcium ionophore A 23187. The present results suggest that certain triorganotin compounds may have a specific inhibitory effect on histamine release by acting on the same process in each of the three stimulus responses.
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