Comparison of Trypsin Inhibitors in Preservation Solution for Islet Isolation
Abstract:Islet transplantation has recently emerged as an effective therapy and potential cure for type 1 diabetes mellitus. Recent reports show that the two-layer method (TLM), which employs oxygenated perfluorochemical (PFC) and University of Wisconsin (UW) solution, is superior to simple cold storage in UW for pancreas preservation in islet transplantation. Moreover, we recently reported that islet yield was significantly higher in the ET-Kyoto solution with ulinastatin (MK)/PFC preservation solution compared with the UW/PFC preservation solution in the porcine model and that the advantages of MK solution are trypsin inhibition and less collagenase inhibition. In this study, we compared ulinastatin with another trypsin inhibitor, Pefabloc, in preservation solution for islet isolation. Islet yield before purification was higher in the MK/PFC group compared with the ET-Kyoto with Pefabloc (PK)/PFC group. The stimulation index was higher for the MK/PFC group than for the PK/PFC group. These data suggest that ET-Kyoto with ulinastatin was the better combination for pancreas preservation than ET-Kyoto with Pefabloc. Based on these data, we now use ET-Kyoto solution with ulinastatin for clinical islet transplantation.
Document Type: Research Article
Affiliations: Transplantation Unit, Kyoto University Hospital, Kyoto 606-8507, Japan; Baylor Institute for Immunology Research/Baylor All Saints Medical Center, Baylor Research Institute, Dallas, TX 75204, USA; Department of Advanced Medicine in Biotechnology and Robotics, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan; Second Department of Surgery, Fujita Health University, Aichi 470-1192, Japan. firstname.lastname@example.org
Publication date: 2009-05-01
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