Reversal of hyperglycemia in diabetic mice by a marginal islet mass together with human blood outgrowth endothelial cells is independent of the delivery technique and blood clot-induced processes.

Abstract:

:We recently reported that human blood outgrowth endothelial cells (BOEC) are supportive to reverse hyperglycemia in marginal islet mass-transplanted diabetic mice. In this report, we investigated whether the observed effect was evoked by islet packing in a blood clot prior to transplantation or could be mimicked by another method of islet/cell delivery. A marginal islet mass with or without BOEC was grafted underneath the kidney capsule of diabetic recipient mice via a (blood clot-independent) tubing system and compared with previous islet packing in a blood clot. The effect on metabolic outcome of both delivery techniques as well as the additive effect of BOEC was subsequently evaluated. Marginal islet mass transplantation via a tubing system required more islets per recipient than via a blood clot. Using the tubing method, transplantation of a marginal islet mass combined with 5x10 (5) BOEC resulted in reversal of hyperglycemia, improved glucose tolerance and increased kidney insulin content. The present study provides evidence that (1) previous packing in a blood clot results in more effective islet delivery compared with tubing; (2) BOEC exert a beneficial effect on marginal islet transplantation, independent of grafting technique and potential blood clot-induced processes. These data further support the use of BOEC in (pre-) clinical studies that aim to improve current islet transplantation protocols.

journal_name

Islets

journal_title

Islets

authors

Coppens V,Heremans Y,Leuckx G,Suenens K,Jacobs-Tulleneers-Thevissen D,Verdonck K,Luttun A,Heimberg H,De Leu N

doi

10.4161/isl.26778

subject

Has Abstract

pub_date

2013-09-01 00:00:00

pages

196-200

issue

5

eissn

1938-2014

issn

1938-2022

pii

26778

journal_volume

5

pub_type

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