Dextran sulfate as a material for the preparation of a membrane for immunoisolation.

Dextran sulfate as a material for the preparation of a membrane for immunoisolation. Research Abstract Details 

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Dextran sulfate as a material for the preparation of a membrane for immunoisolation. Abstract Text:

Yoshinobu Murakami,Hiroo Iwata,Etsuko Kitano,Hajime Kitamura,Yoshito Ikada,

Bioartificial pancreas, in which the islets of Langerhans (islets) are enclosed in an artificial membrane to be protected from the host immune system, is expected to be a promising medical device to treat patients who suffer from insulin-dependent diabetes. Our strategy for preparation of a bioartificial pancreas involves utilizing a membrane including polymeric materials that can inhibit the complement. In our series of studies, we have examined interactions of various polyanions with the complement system to search for potential complement inhibitors. In this study, we concentrated our efforts to clarify the effects of dextran sulfate on the complement system. All of the dextran sulfates examined inhibited the complement activation through both classical and alternative pathways as previously reported. In addition to their inhibitory effects, a certain species of dextran sulfate (molecular mass 10 kDa, degree of sulfonation in a pyranose ring 1.99) specifically degraded C3 without complement activation and, thus, anaphylatoxins that trigger inflammatory reactions were not generated. These facts suggest that a membrane including dextran sulfate effectively protects the islet cells from humoral immunity in addition to not triggering inflammatory reactions. These properties of the membrane make it suitable for a bioratificial pancreas.

Dextran sulfate as a material for the preparation of a membrane for immunoisolation. Publishing Authors By Initials

Y Murakami,H Iwata,E Kitano,H Kitamura,Y Ikada,

For similar fluids and secretions: body fluids: blood: serum research abstracts see: fluids and secretions: body fluids: blood: serum research

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Dextran sulfate as a material for the preparation of a membrane for immunoisolation. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: Journal of biomaterials science. Polymer edition

VOLUME: 14

Page Numbers: 875-85

Journal Abbreviation:

ISSN: 0920-5063

DAY: 20

MONTH: 02

YEAR: 2003

Dextran sulfate as a material for the preparation of a membrane for immunoisolation. Information

Number of References:

LANGUAGE: eng

NlmUniqueID: 9007393

Dextran sulfate as a material for the preparation of a membrane for immunoisolation. Keywords Mesh Terms:

KEYWORDS: Serum

MESH TERMS: immunology

Chemical & Substance for Abstract: Dextran sulfate as a material for the preparation of a membrane for immunoisolation. Information

Substance Name: Dextran Sulfate

Registry Number: 9042-14-2

Grant and Affiliation Information for Dextran sulfate as a material for the preparation of a membrane for immunoisolation.

AFFILIATION: Institute for Frontier Medical Sciences, Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan.

Country: Netherlands

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MEDLINETA: J Biomater Sci Polym Ed

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