Problems in experimental pancreatic segment transplantation with open duct

Area of Science:

• Veterinary Medicine
• Surgical Research
• Transplantation Immunology

Background:

• The canine peritoneum demonstrates tolerance to pancreatic juice following autotransplantation and allotransplantation.
• Activation of pancreatic juice by surrounding non-living tissue can lead to acute pancreatitis.

Purpose of the Study:

• To evaluate the peritoneal tolerance to pancreatic juice in canine pancreatic segment transplantation models.
• To investigate the development of fibrosis and vascular complications in pancreatic grafts.

Main Methods:

• Utilized in-situ autotransplantation and allotransplantation models in dogs with open-duct pancreatic segments.
• Monitored graft survival, fibrosis development, and complications such as splenic artery thrombosis.

Main Results:

• The canine peritoneum successfully tolerated and resorbed inactive pancreatic juice.
• All pancreatic grafts (autologous and allogeneic) developed diffuse interstitial fibrosis, unrelated to rejection.
• Graft necrosis occurred due to splenic artery thrombosis in the absence of antiplatelet therapy.

Conclusions:

• Pancreatic segment transplantation in dogs shows peritoneal tolerance but is complicated by graft fibrosis and vascular issues.
• Research should focus on mitigating vascular complications, particularly splenic artery thrombosis, in pancreatic segment transplantation.