Edaravone, a Free Radical Scavenger, Promotes Engraftment of Intraportally Transplanted Islet Cells
| Autor: | Takeshi Sudo, Taijiro Sueda, Yoshiaki Murakami, Eiso Hiyama, Kenichiro Uemura, Satoru Nagatani |
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| Rok vydání: | 2011 |
| Předmět: |
Blood Glucose
Male endocrine system Endocrinology Diabetes and Metabolism Islets of Langerhans Transplantation Pharmacology medicine.disease_cause Diabetes Mellitus Experimental chemistry.chemical_compound Endocrinology Islet cells Edaravone In Situ Nick-End Labeling Internal Medicine Animals Insulin Medicine geography geography.geographical_feature_category Hepatology business.industry Body Weight Graft Survival Free Radical Scavengers Glucose Tolerance Test Islet Free radical scavenger Rats Inbred F344 Rats surgical procedures operative Liver chemistry Pancreatic islet transplantation business Insulin independence Antipyrine Oxidative stress |
| Zdroj: | Pancreas. 40:126-130 |
| ISSN: | 0885-3177 |
| Popis: | Pancreatic islet transplantation requires multiple transplants to achieve insulin independence. Only one third of the islet mass is stably engrafted; one of the causes of which is ascribed to oxidative stress. We confirmed the hypothesis that administration of edaravone, a free radical scavenger, in the early posttransplantation period promotes islet cell engraftment.Islet isograft from a single donor was intraportally transplanted into streptozotocin-diabetic F344 rats, and intravenous edaravone (3 mg/kg) was administered immediately and 24 hours after the transplantation. Plasma glucose concentrations were monitored for 28 days. Serum insulin levels were obtained on the second week. Morphologic studies were performed on insulin-immunostained and TUNEL-stained sections of the recipient liver.In the edaravone-treated group, hyperglycemia was ameliorated, and 50% of rats achieved normoglycemia (200 mg/dL). All rats in the control group remained hyperglycemic (400 mg/dL). Insulin secretion of the edaravone-treated group was superior to the controls. Morphologically, the number and size of the islet β cells of the edaravone-treated group were larger than those of the controls. The number of TUNEL-positive cells in each islet of the edaravone-treated group were fewer than those of the controls.In streptozotocin-diabetic rats, edaravone administration in the early posttransplantation period promotes engraftment of intraportally transplanted islet cells. |
| Databáze: | OpenAIRE |
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