Pancreas transplantation is warranted essentially by the quality of glucose regulation. Although the fasting blood glucose is invariably normal, this may not be the case during glucose load tests. The purpose of this study was to examine dysregulation within the isolated islet originating from a segmental-pancreas autograft in the dog. Results show an increased basal insulin secretion by the graft islets in static incubation compared with that of islets originating from the head of the pancreas and left in situ. This abnormal secretion may be accounted for by various factors intervening within the graft or the isolated islet, thus suggesting a possible improvement in the surgical model.

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