Document Detail


Cadaver pancreas recovery technique. Impact on islet recovery and in vitro function.
MedLine Citation:
PMID:  7974719     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Previous studies in rodent and canine animal models have suggested a detrimental impact on islet recovery and function when pancreas excision is preceded by in situ vascular flushing with cold preservation solutions. We studied the efficacy of islet isolation from 19 consecutive cadaver pancreases procured alternately by initial pancreatectomy before in situ flush (group 1, our standard procurement technique, n = 9) or pancreas removal following in situ vascular flushing with cold University of Wisconsin solution (group 2, n = 10). Once procured, pancreases were weighed, the main pancreatic duct was cannulated, and 150 ml of collagenase solution was injected. The pancreases were transported to the isolation laboratory and processed within 2 hr. Islets were counted and sized after dithizone staining, and the islet equivalents were calculated. Aliquots of isolated islets were cryopreserved using established techniques. Islet function of both freshly isolated and frozen-thawed islets was assessed using a glucose-stimulated perifusion system. Significantly more pancreas was harvested after University of Wisconsin flush (90.6 +/- 6.9 g for group 1 versus 66.7 +/- 4 for group 2, P < 0.05). The quantity of islets per gram of processed pancreas released during enzymatic digestion from each of the experimental groups did not differ significantly (4.5 +/- 0.6 x 10(3) islet equivalents per gram for primary pancreatectomy versus 4.0 +/- 0.4 x 10(3) University of Wisconsin flush). Similarly, following Ficoll purification, the overall yields of islets did not differ significantly. Total islet yield in the primary pancreatectomy group was 181 +/- 25 x 10(3) islet equivalents (2.7 +/- 0.3 x 10(3) IE/g) versus 217 +/- 41 x 10(3) for the University of Wisconsin flush group (2.9 +/- 0.8 x 10(3) islet equivalents/g; P not significant). No differences were observed in in vitro viability. Perifusion stimulation indexes (peak/basal insulin release) were 5.9 +/- 1.3 for group 1 and 7.1 +/- 1.5 for group 2. These results conflict with published results in animal models and indicate that large numbers of viable islets can be recovered from cadaver pancreas utilizing either procurement technique. The decreased operating time, simplicity, and safety favor the use of total pancreatectomy after limited in situ vascular flushing as the method of choice for pancreas procurement for subsequent islet isolation.
Authors:
N M Kneteman; J R Lakey; T A Kizilisik; Z Ao; G L Warnock; R V Rajotte
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Transplantation     Volume:  58     ISSN:  0041-1337     ISO Abbreviation:  Transplantation     Publication Date:  1994 Nov 
Date Detail:
Created Date:  1994-12-21     Completed Date:  1994-12-21     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0132144     Medline TA:  Transplantation     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1114-9     Citation Subset:  IM    
Affiliation:
Department of Surgery, University of Alberta, Edmonton, Canada.
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MeSH Terms
Descriptor/Qualifier:
Cadaver
Cell Survival
Collagenases / metabolism
Cryopreservation
Humans
Islets of Langerhans / physiology*
Organ Preservation
Pancreas
Specimen Handling / methods*
Chemical
Reg. No./Substance:
EC 3.4.24.-/Collagenases

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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