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Human islet viability and function is maintained during high-density shipment in silicone rubber membrane vessels.

Abstract：

BACKGROUND:The shipment of human islets (IE) from processing centers to distant laboratories is beneficial for both research and clinical applications. The maintenance of islet viability and function in transit is critically important. Gas-permeable silicone rubber membrane (SRM) vessels reduce the risk of hypoxia-induced death or dysfunction during high-density islet culture or shipment. SRM vessels may offer additional advantages: they are cost-effective (fewer flasks, less labor needed), safer (lower contamination risk), and simpler (culture vessel can also be used for shipment). METHOD:IE were isolated from two manufacturing centers and shipped in 10-cm(2) surface area SRM vessels in temperature- and pressure-controlled containers to a distant center after at least 2 days of culture (n = 6). Three conditions were examined: low density (LD), high density (HD), and a microcentrifuge tube negative control (NC). LD was designed to mimic the standard culture density for IE preparations (200 IE/cm(2)), while HD was designed to have a 20-fold higher tissue density, which would enable the culture of an entire human isolation in 1-3 vessels. Upon receipt, islets were assessed for viability (measured by oxygen consumption rate normalized to DNA content [OCR/DNA)]), quantity (measured by DNA), and, when possible, potency and function (measured by dynamic glucose-stimulated insulin secretion measurements and transplants in immunodeficient B6 Rag(+/-) mice). Postshipment OCR/DNA was not reduced in HD vs LD and was substantially reduced in the NC condition. HD islets exhibited normal function postshipment. Based on the data, we conclude that entire islet isolations (up to 400,000 IE) may be shipped using a single, larger SRM vessel with no negative effect on viability and ex vivo and in vivo function.

journal_name

Transplant Proc

journal_title

Transplantation proceedings

authors

Kitzmann JP,Pepper AR,Gala-Lopez B,Pawlick R,Kin T,O'Gorman D,Mueller KR,Gruessner AC,Avgoustiniatos ES,Karatzas T,Szot GL,Posselt AM,Stock PG,Wilson JR,Shapiro AM,Papas KK

doi

10.1016/j.transproceed.2014.06.002

subject

Has Abstract

pub_date

2014-07-01 00:00:00

pages

1989-91

issue

6

eissn

0041-1345

issn

1873-2623

pii

S0041-1345(14)00432-1

journal_volume

46

pub_type

杂志文章

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