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  • Title: Role of hyperglycemia in isogeneic islet transplantation: an experimental animal study.
    Author: Nomikos I, Kalogerakos K, Athanasiou E, Plakokefalos E, Sioutopoulou D, Satra M, Vamvakopoulos NC.
    Journal: Exp Clin Endocrinol Diabetes; 2008 Oct; 116(9):558-60. PubMed ID: 18473285.
    Abstract:
    OBJECTIVE: Study the role of hyperglycemia-induced beta cell loss on grafted islet destruction. DESIGN: Male inbred rats were made diabetic by streptozotocin administration and used as islet donors and/or isograft recipients to probe directly the role of hyperglycemia as an important determinant of transplanted islet fate, following exclusion of immune-related causes of islet graft destruction like allograft immunity and disease recurrence. RESULTS: Our studies showed that: a) Hyperglycemia destroyed islet but not pituitary isografts and b) Tight control of normoglycemia by sufficient islet mass engraftment prevented graft damage. CONCLUSION: While sustained hyperglycemia caused destruction of transplanted islet isografts, induction of normoglycemia by transplantation of sufficient islet mass to diabetic recipients had a beneficial long term effect on their functional engraftment.
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