The effect of zinc-crystallized glucagon-like peptide-1 on insulin secretion of macroencapsulated pancreatic islets.

The effect of zinc-crystallized glucagon-like peptide-1 on insulin secretion of macroencapsulated pancreatic islets.
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锌结晶胰高血糖素样肽-1 对大囊胰岛胰岛素分泌的影响。

DOI:
10.1089/107632701300003278
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发表时间:
2001
期刊:
Tissue engineering.
影响因子:
--
通讯作者:
Bae,YH
Bae,YH
中科院分区:
--
文献类型:
--
作者:
Gappa,H;Baudys,M;Koh,JJ;Kim,SW;Bae,YH

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本研究探讨了使用促胰岛素因子,胰高血糖素样肽-1(GLP-1),以提高大胶囊内胰岛的胰岛素分泌。添加了GLP-1的锌结晶形式 使生物活性单体GLP-1的释放更长和更可控。用于该研究的大胶囊装置的类型由中空纤维(MWCO 100,000和100,000)组成。 1 mm内径),其含有在聚(N-异丙基丙烯酰胺-共-丙烯酸)(2mol%丙烯酸)基质内的大鼠胰岛和GLP-1晶体。当在具有高葡萄糖浓度的培养基中孵育系统时, 在高浓度(300 mg/dL)下,胰岛素分泌增强,在诱导期后增加>85%。当在动态灌注实验中使用相同类型的系统时, 得到了GLP-1晶体可以是一种有效的形式,被截留在生物人工胰腺,以提高胰岛素分泌功能,特别是在高葡萄糖浓度。
This research investigates the use of an insulinotropic factor, glucagon-like peptide-1 (GLP-1), to enhance insulin secretion from islets within a macrocapsule. A zinc-crystallized form of GLP-1 was added to the macrocapsule device to have a longer and more controlled release of the bioactive monomer GLP-1. The type of macrocapsule device used for this study consisted of a hollow fiber (MWCO 100,000 and 1 mm inner diameter) containing rat islets and GLP-1 crystals within a poly(N-isopropylacrylamide-co-acrylic acid) (2 mol% acrylic acid) matrix. When incubating the system in media with a high glucose concentration (300 mg/dL), insulin secretion was enhanced with a >85% increase after an induction period. When the same type of system was used in a dynamic perfusion experiment, similar results were obtained. GLP-1 crystals can be an effective form to be entrapped in a bioartificial pancreas to enhance insulin secretion function, especially at high glucose concentrations.
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