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Kosinova L, Patikova A, Jirak D, Galisova A, Vojtiskova A, Saudek F, Kriz J. A novel model for in vivo quantification of immediate liver perfusion impairment after pancreatic islet transplantation. Islets 2019; 11:129-140. [PMID: 31498024 PMCID: PMC6930024 DOI: 10.1080/19382014.2019.1651164] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Instant Blood-Mediated Inflammatory Reaction (IBMIR) is a major cause of graft loss during pancreatic islet transplantation, leading to a low efficiency of this treatment method and significantly limiting its broader clinical use. Within the procedure, transplanted islets obstruct intrahepatic portal vein branches and consequently restrict blood supply of downstream lying liver tissue, resulting typically in ischemic necrosis. The extent of ischemic lesions is influenced by mechanical obstruction and inflammation, as well as subsequent recanalization and regeneration capacity of recipient liver tissue. Monitoring of immediate liver perfusion impairment, which is directly related to the intensity of post-transplant inflammation and thrombosis (IBMIR), is essential for improving therapeutic and preventive strategies to improve overall islet graft survival. In this study, we present a new experimental model enabling direct quantification of liver perfusion impairment after pancreatic islet transplantation using ligation of hepatic arteries followed by contrast-enhanced magnetic resonance imaging (MRI). The ligation of hepatic arteries prevents the contrast agent from circumventing the portal vein obstruction and enables to discriminate between well-perfused and non-perfused liver tissue. Here we demonstrate that the extent of liver ischemia reliably reflects the number of transplanted islets. This model represents a useful tool for in vivo monitoring of biological effect of IBMIR-alleviating interventions as well as other experiments related to liver ischemia. This technical paper introduces a novel technique and its first application in experimental animals.
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Affiliation(s)
- Lucie Kosinova
- Laboratory of Pancreatic Islets, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
- First Faculty of Medicine, Charles University, Prague, Czech Republic
- CONTACT Jan Kriz Laboratory of Pancreatic Islets, Institute for Clinical and Experimental Medicine, Videnska 1958/9, Prague, Czech Republic
| | - Alzbeta Patikova
- Laboratory of Pancreatic Islets, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
- First Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Daniel Jirak
- Magnetic Resonance Unit, Radiodiagnostic and Interventional Radiology Department, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
- Institute of Biophysics and Informatics, Charles University, Prague, Czech Republic
| | - Andrea Galisova
- Magnetic Resonance Unit, Radiodiagnostic and Interventional Radiology Department, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Alzbeta Vojtiskova
- Laboratory of Pancreatic Islets, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
- First Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Frantisek Saudek
- Laboratory of Pancreatic Islets, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
- Diabetes Center, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Jan Kriz
- Laboratory of Pancreatic Islets, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
- Diabetes Center, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
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