ADAPTION OF NEUTRAL PROTEASE ACTIVITY FOR ISLET ISOLATION FROM THE LONG-TERM TLM-STORED PIG PANCREAS

D Brandhorst, M Iken, M Brendel, RG Bretzel… - …, 2004 - journals.lww.com
Aims: The enzymatic dissociation of pancreatic tissue by collagenase is a key step in the
islet isolation procedure. Previous investigations clearly showed that purified collagenase …

Adaption of neutral protease activity for islet isolation from the long-term two-layer method–stored pig pancreas

D Brandhorst, M Iken, MD Brendel, RG Bretzel… - Transplantation …, 2005 - Elsevier
BACKGROUND: Islet release from the pancreas is mediated by both collagenase and
neutral protease (NP), a critical effector of islet integrity. To prove the hypothesis that …

Influence of neutral protease activity on human islet isolation outcome

H Brandhorst, MD Brendel, RG Bretzel… - …, 2004 - journals.lww.com
Aims: The enzymatic dissociation of pancreatic tissue by collagenase is a key step in the
islet isolation procedure. Previous investigations in the rat clearly showed that neutral …

SERINE-PROTEASE INHIBITION DURING ISLET ISOLATION INCREASES ISLET YIELD FROM HUMAN PANCREASES WITH PROLONGED ISCHEMIA1

JRT Lakey, LMH Helms, T Kin, GS Korbutt… - …, 2001 - journals.lww.com
Background. Islet isolation from the pancreatic tissue matrix remains highly variable. Recent
evidence suggests that intrinsic human pancreatic proteases, including trypsin, may inhibit …

Influence of collagenase loading on long-term preservation of pig pancreas by the two-layer method for subsequent islet isolation

D Brandhorst, M Iken, Y Tanioka, MD Brendel… - …, 2005 - journals.lww.com
Background. The introduction of the two-layer method (TLM) for long-term human pancreas
preservation revealed the enormous potential of TLM to improve graft function of isolated …

Experience of islet isolation without neutral protease supplementation

T Kin, D O'Gorman, P Senior, AMJ Shapiro - Islets, 2010 - Taylor & Francis
Background. We have reported improved islet isolation outcomes using a new digestion
protocol where the pancreas is perfused only with collagenase, and neutral protease (NP) is …

LONG-TERM PRESERVATION OF THE PIG PANCREAS BY THE ONE-LAYER METHOD FOR SUCCESSFUL ISLET ISOLATION

D Brandhorst, M Iken, M Brendel, RG Bretzel… - …, 2004 - journals.lww.com
Aims: The oxygenation of the human pancreas during cold storage was recently established
for clinical islet transplantation by introduction of the two-layer method (TLM). Nevertheless …

SUPPLEMENTAL NEUTRAL PROTEASE IS NOT ALWAYS NECESSARY DURING PANCREAS DISSOCIATION FOR ISLET ISOLATION: 401

T Kin, D O'Gorman, P Senior, AMJ Shapiro - Transplantation, 2010 - journals.lww.com
Introduction. Most manufacturers provide collagenase and noncollagenolytic enzyme in
separate vials, as opposed to previous products containing both collagenase and non …

The ratio between class II and class I collagenase determines the amount of neutral protease activity required for efficient islet release from the rat pancreas

H Brandhorst, A Alt, S Huettler… - …, 2004 - journals.lww.com
Aims: The enzymatic dissociation of pancreatic tissue by collagenase is a key step in the
islet isolation procedure. Previous investigations clearly showed that the successful release …

The importance of tryptic-like activity in purified enzyme blends for efficient islet isolation

H Brandhorst, A Friberg, HH Andersson, M Felldin… - …, 2009 - journals.lww.com
Background. The isolation of islets from the human pancreas critically depends on an
efficient enzyme blend. Previous studies have solely focused on the presence of …