Evaluation of insulin secretion of isolated rat islets cultured in extracellular matrix.

Abstract:

:Islet isolation involves enzymatic digestion of the interstitial matrix and mechanical disruption of the tissue. It is possible that a fundamental change of islet biology resulting from the loss of critical factors required for islet function or survival will occur. Extracellular matrix (ECM) is one of the most important components of the islet microenvironment. Reconstruction of the cell-matrix relationship seems to be effective for improving the loss of differentiated islet structure and function. The purpose of this study was to characterize and compare the effects of collagen gel mixture or Matrigel on beta-cell function and islet cell survival. After isolation by the collagenase digestion technique, rat islets were divided and cultured with various types of collagen gel mixture. They were assessed for their glucose-stimulated insulin secretion and cell viability. Glucose-induced insulin secretion of islets cultured with collagen type I gel or a mixture of collagen type I and IV was improved after 11 days in culture. In conclusion, a type of gel composed of collagen type I and/or type IV as an islet microenvironment is sufficient to maintain glucose responsiveness and may be useful for islet transplantation.

journal_name

Cell Transplant

journal_title

Cell transplantation

authors

Nagata N,Gu Y,Hori H,Balamurugan AN,Touma M,Kawakami Y,Wang W,Baba TT,Satake A,Nozawa M,Tabata Y,Inoue K

subject

Has Abstract

pub_date

2001-01-01 00:00:00

pages

447-51

issue

4-5

eissn

0963-6897

issn

1555-3892

journal_volume

10

pub_type

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