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Fat-Covered Islet Transplantation Using Epididymal White Adipose Tissue
Published on: May 25, 2021
Bone marrow as an alternative site for islet transplantation
Elisa Cantarelli1, Raffaella Melzi, Alessia Mercalli
1San Raffaele Diabetes Research Institute, San Raffaele Scientific Institute, Milan, Italy.
Blood
|September 24, 2009
Summary
Bone marrow (BM) offers a promising alternative site for pancreatic islet transplantation, overcoming liver transplant limitations. This study demonstrates successful islet engraftment in BM, restoring normal glucose metabolism and offering a potentially safer therapeutic option.
Area of Science:
- Immunology
- Endocrinology
- Regenerative Medicine
Background:
- Liver transplantation of pancreatic islets faces challenges due to immunologic and nonimmunologic factors.
- Alternative transplant sites are needed to improve islet transplantation outcomes.
Purpose of the Study:
- To investigate the feasibility and efficacy of bone marrow (BM) as a site for pancreatic islet transplantation.
- To compare islet engraftment and function in BM versus the liver.
Main Methods:
- Syngeneic pancreatic islets were transplanted into the BM of streptozocin-induced diabetic C57BL/6 mice.
- Glucose metabolism, islet morphology, and hematopoietic activity were monitored post-transplantation.
- Comparison of islet engraftment success and euglycemia rates between BM and liver transplant sites.
Main Results:
- Islets engrafted efficiently in the BM, leading to sustained euglycemia for over a year.
- BM-transplanted islets exhibited compact morphology, preserved alpha/beta cell ratios, and minimal impact on bone structure.
- Islet transplantation in BM did not impede hematopoietic activity, even during viral infection.
Conclusions:
- Bone marrow serves as an effective and safe alternative site for pancreatic islet transplantation.
- This approach holds significant potential for treating diabetes and other conditions requiring cellular transplantation.
