The pig as a preclinical model for intestinal ischemia-reperfusion and transplantation studies.

Small bowel transplantation has become an established procedure for treatment of irreversible intestinal failure. In this procedure, primary ischemia and reperfusion is inevitable and will lead to some level of tissue injury. Both clinical and experimental data demonstrate that events occurring at the time of transplantation, called ischemia reperfusion injury (IRI), may have deleterious short- and long-term effects, manifesting as increased episodes of acute rejection and chronic allograft dysfunction.

Effect of polyethylene glycol in pig intestinal allotransplantation without immunosuppression.

Objectives: We evaluated whether IGL-1, a graft preservation solution containing polyethylene glycol, improves the outcome of small bowel grafts in comparison to the University of Wisconsin (UW) solution in a pig allotransplantation model.

Materials And Methods: Seventeen pigs were randomly allocated to group 1 (n = 10; intestinal allotransplantation with IGL-1) and group 2 (n = 7; allotransplantation with UW). Pigs received no immunosuppression and were sacrificed on postoperative d (POD) 8.

Significance of serum bile acids in small bowel allograft rejection in pigs.

Objectives: To examine changes in individual bile acids in serum in a pig model of allogenic small bowel transplantation.

Methods: Seventeen pigs were divided into two groups: group 1 (n=10), controls; group 2 (n=7), allotransplantation, nonimmunosuppressed recipients. Both groups received a segmental intestine.

In situ intestinal ischemia-reperfusion injury in the pig: a model using the first jejunal artery for flushing.

Background: We describe a new surgical technique of in situ intestinal ischemia-reperfusion injury in the pig, which includes transection of the small bowel, extrinsic autonomic denervation, lymphatic disruption, and finally in-situ cold ischemia of the graft by flushing through the first jejunal artery.

Material And Methods: Ten female pigs were used for the study. All neural and lymphatic connections to the jejunoileum were transected.

[Intestinal transplantation].

Even though surgical techniques for isolated intestine, liver-intestine, and multivisceral transplantations were developed in the 1960's, very few patients were transplanted before 1990 because initial immunosuppression regimens were insufficient, making intestine transplantation impossible. Intestine transplantation resulted in death in most patients within days or months. The discouraging results of the first clinical trials were due to technical complications, sepsis, and the failure of conventional immunosuppression to control rejection.

Improved quality of life by combined transplantation in Hirschsprung's disease with a very long aganglionic segment.

Background/purpose: The treatment of children with Hirschsprung's disease beginning in the proximal jejunum remains a challenge for the pediatric surgeon. These patients need a definitive parenteral nutrition, which could lead to a liver impairment. The goal of this work is to assess the quality of life after combined liver, intestine, and right colon transplantation.