Histamine and pancreatitis: Increase of plasma histamine levels in dogs with pfeffer preparation and influence of aminoguanidine on the survival time

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Abstract
Histamine release could be shown in 50% of the dogs suffering from acute haemorrhagic pancreatitis in Pfeffer's preparation. The survival time of these dogs was shorter by about 50% than that of animals without alteration of the plasma histamine levels. The powerful diamine oxidase blocker aminoguanidine diminished the incidence of severe pancreatitis in the dogs without influencing survival time. As in animals treated by saline histamine release could be shown in 50% of the aminoguanidine-treated dogs in which higher plasma histamine levels were determined than in saline-treated animals. The survival time of the dogs with histamine release, however, was not different from that of animals with normal plasma histamine levels throughout the experiment. The actions of aminoguanidine in Pfeffer's preparation seemed to be rather complex. Contrasting effects on the development of pancreatitis and on histamine inactivation may have influenced the survival time in different directions.

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