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Abstract #2825

The effect of mesenchymal stem cells on vascularization of an artificial transplant cell site studied by DCE-MR and bioluminescence imaging

Andrea Galisova 1 , Daniel Jirak 1 , Eva Fabryova 2 , Vit Herynek 1 , Eva Dovolilova 2 , Jan Kriz 2 , and Milan Hajek 1

1 MR Unit, Department of Diagnostic and Interventional Radiology, Institute for Clinical and Experimental Medicine, Prague, Czech Republic, Czech Republic, 2 Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czech Republic, Czech Republic

Sufficient blood supply to the transplanted cells is crucial for their survival and can be enhanced by implantation of stem cells. We examined the effect of stem cells on vascularization of artificial scaffolds intended for pancreatic islet transplantation by Dynamic Contrast Enhancement MR. Presence of genetically modified stem cells was confirmed by bioluminescence imaging. We observed increased perfusion in the devices simultaneously with optical signal within 2 months following stem cells implantation. Our results indicate that stem cells improve vascularization inside the chambers what ameliorates the transplantation outcome.

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