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  • Title: Islet transplantation to the renal subcapsular space improves late complications in streptozotocin-diabetic rats.
    Author: Ar'Rajab A, Ahrén B, Alumets J, Lögdberg L, Bengmark S.
    Journal: Eur Surg Res; 1990; 22(5):270-8. PubMed ID: 2079089.
    Abstract:
    Transplantation of isolated islets is a promising approach in the treatment of diabetes. We have examined the long-term effects on the late complications of islet transplantation in an experimental diabetes model in the rat. Diabetes was induced by streptozotocin (70 mg/kg i.v.) and the rats were treated with either insulin (daily injection of 40 U) or transplantation of 1,000 freshly isolated, hand-picked, islets into the left renal subcapsular space. Both islet transplantation and insulin treatment completely normalized the increased levels of blood glucose, urine volume and water intake that were observed in the diabetic rats. The decreased growth rate of the diabetic rats was almost normalized by both treatment protocols. As for late complications, after 3 months, all untreated diabetic rats had cataract. They also had swelling and vacuolation of renal tubular cells, and, consistent with this, very high levels of urinary beta 2-microglobulin excretion. Both islet transplantation and insulin treatment completely prevented these late complications. Thus, islet transplantation to the renal subcapsular space is in this experimental model as good as insulin treatment in treating the clinical signs of diabetes and in preventing diabetic complications in the eye and kidney.
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