[Plasma histamine level during and following kidney allotransplantation in man].

In human kidney allotransplantation, elevated plasma histamine levels were measured before surgery, following revascularization, and in single cases also several days after surgery. The maximum extent of this histamine release must be tested with respect to time and to localization. Its significance must be established. The intermittently increasing plasma histamine levels (greater than 1 ng/ml) must be considered as a possible risk regarding stress ulcer pathogenesis.