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- W2404684018 abstract "Diabetes type 1 is, as we know, a chronic progressive disease, which requires a substitutional therapy with insulin for the whole life. The cause is a definite destruction of the pancreatic beta cells. For many years there have been intensive investigations on the possibility to obtain a complete, persistent withdrawal of the symptoms. Substitution of the destroyed, not active cells, could take place after transplantation of the whole pancreas, transplantation of pancreatic islets or transplantation of stem cells. This is now the only method which may cause an independence from exogenous insulin, persistent normoglycemia, normal HbA1c level, without risk of hypoglycemia. Pancreas and islets transplantations, however, are connected till now with the necessity of an immunosuppressive therapy for the whole life, with the toxicity of the drugs, incidence of frequent infections and malignancy. Pancreas transplantation is a serious surgical intervention, connected with numerous risks and complications, considerably less risk appears in islet cell transplantations. Since 2000 exclusively islet cell transplantations have been performed. One of the leading centers is Edmonton, where professor Shapiro prepared the so called. Edmonton protocol which is characterized by using corticosteroid-free immunosuppressive drugs, islet cells from two or more donors, repeated till the attainment of insulin dependence. A problem now is that the islets are obtained from cadavers. Therefore intensive research is conducted for alternative sources of beta cells. At this moment it is mostly preferred for receiving a sufficient number of insulin producing cells to develop stem cells with a subsequent differentiation to insulin producing cells. The mentioned cells have an unlimited ability of reproduction, in this case also immunosuppressive therapy is not necessary. Alternative sources of beta cells are cells achieved on the genetic engineering, embryonic or adult somatic stem cells. It is however important to stress, that adult stem cells as insulin producing cells are not unequivocally identified. For obtaining better, permanent results after transplantation the following are important: optimalization of islands growth in the liver, prevention of the early inflammations, further development of highly selective, well tolerated, corticosteroid-free immunosuppressive drugs, identification of rejecting markers, induction of immunotolerance, micro- and macro-capsulation of the islets to protect the recipient against the immunological attack. Several multicenter studies in important scientific centers are opened, there is also Juvenile Research Foundation International. In spite of a permanent progress there are still many important problems to solve. It is necessary to institute further multicenter, international research to ascertain the effect of transplantation concerning the normalisation of glycemia, prevention or inhibition of the progress of diabetic complications and to prolong the life span in patients with type 1 diabetes after transplantation." @default.
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- W2404684018 date "2004-01-01" @default.
- W2404684018 modified "2023-09-23" @default.
- W2404684018 title "[Transplantation in diabetes type 1--current problems and perspectives]." @default.
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