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Die Beziehung zwischen implantierter Betazellmasse und metabolischer Stoffwechsellage nach Transplantation pankreatischer Fragmente beim Hund

Correlation of glucose metabolism and implanted beta cell mass after transplantation of pancreatic fragments of totally pancreatectomized dogs

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Summary

20 dogs underwent total pancreatectomy. Pancreatic fragments were produced using an intraductal collagenase perfusion technique and mechanical disruption of the pancreatic gland. The resulting tissue suspension was transplanted as an autotransplant to the spleen of each animal by intravenous reflux injection into the splenic vein. In 75% of all transplanted animals long-term function with normoglycemia was restored while i.v. glucose tolerance tests were impaired as compared to 13 controls. The spleen insulin content of these sucessfully transplanted animals corresponded to only 5 to 15% of the original pancreas insulin content which was responsible for the reduced function. Intraductal collagenase perfusion is a reliable method to restore normoglycemia after total pancreatectomy in the autotransplant model using pancreatic fragments. To improve the metabolic function of the islet transplant an increased number of islets has to be implanted.

Zusammenfassung

Die Pancreata von 20 Hunden wurden total excidiert, mittels einer intraductalen Kollagenaseperfusionstechnik und mechanischer Zerkleinerung zu insulinproduzierenden Pankreasfragmenten verarbeitet und als Autotransplantat in die Milz eines jeden Tieres mittels intravenösem Reflux in die V. lienalis injiziert. Bei 75% aller transplantierten Tiere wurde eine langfristige normoglykämische Stoffwechsellage hergestellt, wobei die Glucosetoleranzteste im Vergleich zu 13 Kontrolltieren pathologisch verändert waren. Der Milzinsulingehalt der erfolgreich transplantierten Tiere war auf ca. 5 bis 15% des urspünglichen Pankreasinsulingehaltes reduziert, was für die Funktionseinschränkung verantwortlich sein dürfte. Die angewandte intraductale Kollagenaseperfusionstechnik ist eine zuverlässige Methode zur Wiederherstellung einer normoglykämischen Stoffwechsellage nach totaler Pankreatektomie im Autotransplantationsmodell. Zur Steigerung der Funktionsfähigkeit des Inseltransplantates ist eine erhöhte Inselimplantationsrate erforderlich.

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Hesse, U.J. Die Beziehung zwischen implantierter Betazellmasse und metabolischer Stoffwechsellage nach Transplantation pankreatischer Fragmente beim Hund. Langenbecks Arch Chiv 370, 211–221 (1987). https://doi.org/10.1007/BF01259309

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  • DOI: https://doi.org/10.1007/BF01259309

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