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Endovascular Method for Transplantation of Insulin-Producing Cells to the Pancreas Parenchyma in Swine
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Immunology, Genetics and Pathology, Clinical Immunology.
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2014 (English)In: American Journal of Transplantation, ISSN 1600-6135, E-ISSN 1600-6143, Vol. 14, no 3, 694-700 p.Article in journal (Refereed) Published
Abstract [en]

Insulin-producing cells are transplanted by portal vein injection as an alternative to pancreas transplantation in both clinical and preclinical trials. Two of the main limitations of portal vein transplantation are the prompt activation of the innate immunity and concomitant loss of islets and a small but significant risk of portal vein thrombosis. Furthermore, to mimic physiological release, the insulin-producing cells should instead be located in the pancreas. The trans-vessel wall approach is an endovascular method for penetrating the vessel wall from the inside. In essence, a working channel is established to the parenchyma of organs that are difficult to access by percutaneous technique. In this experiment, we accessed the extra-vascular pancreatic parenchyma in swine by microendovascular technique and injected methylene blue, contrast fluids and insulin-producing cells without acute adverse events. Further, we evaluated the procedure itself by a 1-year angiographical follow-up, without adverse events. This study shows that the novel approach utilizing endovascular minimal invasiveness coupled to accurate trans-vessel wall placement of an injection in the pancreatic parenchyma with insulin-producing cells is possible. In clinical practice, the potential benefits compared to portal vein cell transplantation should significantly improve endocrine function of the graft and potentially reduce adverse events. This study presents one-year follow-up safety data on the microendovascular trans-vessel wall technique and shows that the technique can be used to transplant insulin-producing cells to the swine pancreas parenchyma.

Place, publisher, year, edition, pages
2014. Vol. 14, no 3, 694-700 p.
Keyword [en]
Endovascular, islet transplantation, minimal-invasive transplantation, SPECT, CT, swine
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:uu:diva-222739DOI: 10.1111/ajt.12601ISI: 000331783200025OAI: oai:DiVA.org:uu-222739DiVA: diva2:712302
Funder
Swedish Research Council, K2006-73X-20139-01-3
Available from: 2014-04-14 Created: 2014-04-14 Last updated: 2017-12-05Bibliographically approved

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