Volume 52, Issue 6 pp. 1228-1233
Communication

MRI of transplanted pancreatic islets

Daniel Jirák

Corresponding Author

Daniel Jirák

MR-Unit, Department of Radiodiagnostic and Interventional Radiology, Institute for Clinical and Experimental Medicine, Prague, Czech Republic

Center for Cell Therapy and Tissue Repair, 2nd Medical Faculty, Charles University, Prague, Czech Republic

MR Unit, Department of Radiodiagnostic and Interventional Radiology, Institute for Clinical and Experimental Medicine, Videnska 1958/9, 140 21 Praha 4, Czech Republic===Search for more papers by this author
Jan Kríz

Jan Kríz

Laboratory of Islets of Langerhans, Institute for Clinical and Experimental Medicine, Prague, Czech Republic

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Vít Herynek

Vít Herynek

MR-Unit, Department of Radiodiagnostic and Interventional Radiology, Institute for Clinical and Experimental Medicine, Prague, Czech Republic

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Benita Andersson

Benita Andersson

Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden

Department of Neuroscience, Institute of Experimental Medicine ASCR, Prague, Czech Republic

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Peter Girman

Peter Girman

Laboratory of Islets of Langerhans, Institute for Clinical and Experimental Medicine, Prague, Czech Republic

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Martin Burian

Martin Burian

MR-Unit, Department of Radiodiagnostic and Interventional Radiology, Institute for Clinical and Experimental Medicine, Prague, Czech Republic

Center for Cell Therapy and Tissue Repair, 2nd Medical Faculty, Charles University, Prague, Czech Republic

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František Saudek

František Saudek

Center for Cell Therapy and Tissue Repair, 2nd Medical Faculty, Charles University, Prague, Czech Republic

Laboratory of Islets of Langerhans, Institute for Clinical and Experimental Medicine, Prague, Czech Republic

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Milan Hájek

Milan Hájek

MR-Unit, Department of Radiodiagnostic and Interventional Radiology, Institute for Clinical and Experimental Medicine, Prague, Czech Republic

Center for Cell Therapy and Tissue Repair, 2nd Medical Faculty, Charles University, Prague, Czech Republic

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First published: 23 November 2004
Citations: 144

Abstract

A promising treatment method for type 1 diabetes mellitus is transplantation of pancreatic islets containing β-cells. The aim of this study was to develop an MR technique to monitor the distribution and fate of transplanted pancreatic islets in an animal model. Twenty-five hundred purified and magnetically labeled islets were transplanted through the portal vein into the liver of experimental rats. The animals were scanned using a MR 4.7-T scanner. The labeled pancreatic islets were clearly visualized in the liver in both diabetic and healthy rats as hypointense areas on T2*-weighted MR images during the entire measurement period. Transmission electron microscopy confirmed the presence of iron-oxide nanoparticles inside the cells of the pancreatic islets. A significant decrease in blood glucose levels in diabetic rats was observed; normal glycemia was reached 1 week after transplantation. This study, therefore, represents a promising step toward possible clinical application in human medicine. Magn Reson Med 52:1228–1233, 2004. © 2004 Wiley-Liss, Inc.

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