A Meta-Analysis for Comparison of the Two-Layer and University of Wisconsin Pancreas Preservation Methods in Islet Transplantation
Conflicting results have been reported on the effectiveness of the two-layer method (TLM) compared with the University of Wisconsin (UW) method for preserving pancreata. The objective of this study was to compile the evidence for or against any difference in human islet yield and viability between t...
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doaj-1ae7865227354d8b9a01eede6e2ff5ae2020-11-25T03:38:22ZengSAGE PublishingCell Transplantation0963-68971555-38922011-08-012010.3727/096368910X544942A Meta-Analysis for Comparison of the Two-Layer and University of Wisconsin Pancreas Preservation Methods in Islet TransplantationHuanying Qin M.S.0Shinichi Matsumoto1Goran B. Klintmalm2Edward B. De Vol3 Institute for Health Care Research and Improvement, Baylor Health Care System, Dallas, TX, USA Baylor Institute for Immunology Research, Baylor Health Care System, Dallas, TX, USA Baylor Regional Transplant Institute, Baylor Health Care System, Dallas, TX, USA Institute for Health Care Research and Improvement, Baylor Health Care System, Dallas, TX, USAConflicting results have been reported on the effectiveness of the two-layer method (TLM) compared with the University of Wisconsin (UW) method for preserving pancreata. The objective of this study was to compile the evidence for or against any difference in human islet yield and viability between these two. PubMed (January 2000 to May 2008) and Cochran Library searches were performed and 17 studies were included for the meta-analysis. Data on donor characteristics, preservation time, and outcomes were abstracted. Studies were subgrouped based on how TLM was used (UW + TLM or TLM alone), on mean cold ischemic time (CIT) (>20 h or <20 h), and on whether special chemical was used (yes or no). Meta-analysis of all studies and subgroups was performed and the pooled standardized mean differences (SMD) with 95% confidence intervals (CI) were reported. Overall, the use of TLM significantly increased islet yield [SMD, 0.74 (0.44–1.04)] and viability [SMD, 0.63 (0.14–1.12)]. The beneficial effects of TLM on islet yield were more evident when TLM was used following UW storage or when prolonged CIT was used. TLM used alone, shorter CIT, and no chemical use all resulted in similar islet viability between TLM and UW groups. Beneficial effects of TLM on islet viability were demonstrated only when TLM was used following UW storage, or with prolonged CIT, or with chemical use. In conclusion, the TLM was beneficial for prolonged pancreas preservation before human islet isolation; however, benefit of the TLM for short-term preservation was not clear.https://doi.org/10.3727/096368910X544942 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Huanying Qin M.S. Shinichi Matsumoto Goran B. Klintmalm Edward B. De Vol |
spellingShingle |
Huanying Qin M.S. Shinichi Matsumoto Goran B. Klintmalm Edward B. De Vol A Meta-Analysis for Comparison of the Two-Layer and University of Wisconsin Pancreas Preservation Methods in Islet Transplantation Cell Transplantation |
author_facet |
Huanying Qin M.S. Shinichi Matsumoto Goran B. Klintmalm Edward B. De Vol |
author_sort |
Huanying Qin M.S. |
title |
A Meta-Analysis for Comparison of the Two-Layer and University of Wisconsin Pancreas Preservation Methods in Islet Transplantation |
title_short |
A Meta-Analysis for Comparison of the Two-Layer and University of Wisconsin Pancreas Preservation Methods in Islet Transplantation |
title_full |
A Meta-Analysis for Comparison of the Two-Layer and University of Wisconsin Pancreas Preservation Methods in Islet Transplantation |
title_fullStr |
A Meta-Analysis for Comparison of the Two-Layer and University of Wisconsin Pancreas Preservation Methods in Islet Transplantation |
title_full_unstemmed |
A Meta-Analysis for Comparison of the Two-Layer and University of Wisconsin Pancreas Preservation Methods in Islet Transplantation |
title_sort |
meta-analysis for comparison of the two-layer and university of wisconsin pancreas preservation methods in islet transplantation |
publisher |
SAGE Publishing |
series |
Cell Transplantation |
issn |
0963-6897 1555-3892 |
publishDate |
2011-08-01 |
description |
Conflicting results have been reported on the effectiveness of the two-layer method (TLM) compared with the University of Wisconsin (UW) method for preserving pancreata. The objective of this study was to compile the evidence for or against any difference in human islet yield and viability between these two. PubMed (January 2000 to May 2008) and Cochran Library searches were performed and 17 studies were included for the meta-analysis. Data on donor characteristics, preservation time, and outcomes were abstracted. Studies were subgrouped based on how TLM was used (UW + TLM or TLM alone), on mean cold ischemic time (CIT) (>20 h or <20 h), and on whether special chemical was used (yes or no). Meta-analysis of all studies and subgroups was performed and the pooled standardized mean differences (SMD) with 95% confidence intervals (CI) were reported. Overall, the use of TLM significantly increased islet yield [SMD, 0.74 (0.44–1.04)] and viability [SMD, 0.63 (0.14–1.12)]. The beneficial effects of TLM on islet yield were more evident when TLM was used following UW storage or when prolonged CIT was used. TLM used alone, shorter CIT, and no chemical use all resulted in similar islet viability between TLM and UW groups. Beneficial effects of TLM on islet viability were demonstrated only when TLM was used following UW storage, or with prolonged CIT, or with chemical use. In conclusion, the TLM was beneficial for prolonged pancreas preservation before human islet isolation; however, benefit of the TLM for short-term preservation was not clear. |
url |
https://doi.org/10.3727/096368910X544942 |
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