Renal transplantation in the rat can be performed by a simple technique utilising cuff anastomosis. This method is quick and reliable, and the results compare well with those achieved by standard microsurgical techniques.
Pancreas transplantation has been performed in the rat to study the effect on rejection of duct ligation, duct obliteration and duct open intraperitoneal drainage. On day six, an acceleration of graft damage was seen in the duct ligated and obliterated allografts compared to the duct open group. However, by day 11, rejection was complete in all three groups. In comparison with pancreatic isografts, the histological diagnosis of rejection can be difficult to define, particularly in the duct ligated and obliterated groups. The most useful criterion was the localisation of the cellular infiltrate to the walls of small veins and within the islet of Langerhans.
A successful technique of simultaneous pancreatico-renal transplantation into the streptozotocin-induced diabetic rat is described employing a sutureless cuff technique for three of four vascular anastomoses. Reversal of the diabetic state was uniformly observed within 24 hours postoperatively and near-normal renal function was evidenced by 50 days postoperatively. The technique is reliable and reproducible and represents the first report of successful combined transplantation into the diabetic rat.
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