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Biomedical subjects

E Deltz

Publications and source records attributed to E Deltz.

At least 19 recordsLinked to original sources
PubMed1991

[Distribution of immunocompetent cells small intestine transplantation in rats].

Heterotopic small bowel transplantation was performed in allogeneic rats with and without cyclosporine. Syngeneic animals served as controls. Small bowel allografts, lymphoid tissues and small bowel of the host were investigated by immunohistochemistry using antibodies against T-cells and macrophages. During rejection, increasing numbers of macrophages infiltrated preferentially the deep layers of the small bowel wall, whereas only a slight T-cell infiltration was observed. No histological changes were noted in the organs of the host. Cyclosporine prevented lymphoid as well as macrophage infiltration of the transplant. Rejection monitoring of small bowel transplants is possible by investigation of macrophage infiltration in deep biopsies including the submucosa.

Animals↗
PubMed1990

[Small intestine transplantation--a causal therapy in short bowel syndrome].

The problems of surgical technique, graft physiology and immunological reactions in small-bowel transplantation have been investigated in extended animal experiments. In these experiments, the fundamentals of a successful clinical application of small-bowel transplantation could be laid. A successful human small-bowel transplantation could be carried out by the Kiel Group for the first time in 1988. A graft which had been removed from a related donor showed a complete adaptation after 22 months, so that the patient became completely independent from parenteral nutrition. After that, in several cases small-bowel and combined liver and small-bowel transplantation have been carried out. Thus, the clinical small-bowel transplantation represents the causal therapy of short-bowel syndrome and should be developed in further clinical trials.

Adult↗
PubMed1990

Small bowel transplantation.

Small intestinal transplantation has had several clinical attempts based on extensive experimental work during the past two decades. Several models, such as auxiliary (heterotopic) or orthotopic models, have been developed in regard to problems with graft immunology and function. The question of mesenteric-portal or mesenteric-caval graft drainage was raised, and the answer seems to be open. Concerning lipid absorption, interest was directed to the reconstitution of lymphatic vessels, because orally administered cyclosporine A is absorbed by the lipid mechanism. Carbohydrate digestion and absorption are used for determination of graft function and for monitoring graft rejection. This article summarizes these problems and deals with the surgical procedure of small bowel transplantation in the rat.

Anastomosis, Surgical↗
PubMed1990

Small bowel transplantation: report of a clinical case.

Extensive small bowel resection may become necessary for several reasons in children and adults. The only causal therapy of short bowel syndrome is small bowel transplantation. So far severe immunological problems have caused deleterious results despite technically successful transplantation. A clinical case of small bowel transplantation in a child is reported. The 3-year-old boy had been operated on for volvulus which had led to nearly total gangrene of the whole small bowel. Finally, only 4 cm of jejunum could be saved. Total parenteral nutrition (TPN) therefore became necessary. Small bowel transplantation was carried out with the mother as donor; transplantation technique is described in detail. Postoperative immunosuppression was performed by administration of cyclosporin A and prednisolone. Because of graft rejection, the graft had to be removed on the 12th postoperative day. At present, the child is well and on TPN again. This case shows that small bowel transplantation by living related organ donation is technically possible without impairment of the donor's quality of life. Further experimental and clinical work should be encouraged.

Child, Preschool↗