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Abstract Title:

Olive Component Oleuropein Promotesβ-Cell Insulin Secretion and Protects β-Cells from Amylin Amyloid-Induced Cytotoxicity.

Abstract Source:

Biochemistry. 2017 Sep 26 ;56(38):5035-5039. Epub 2017 Sep 13. PMID: 28829122

Abstract Author(s):

Ling Wu, Paul Velander, Dongmin Liu, Bin Xu

Article Affiliation:

Ling Wu

Abstract:

Oleuropein, a natural product derived from olive leaves, has reported anti-diabetic functions. However, detailed molecular mechanisms for how it affectsβ-cell functions remain poorly understood. Here, we present evidence that oleuropein promotes glucose-stimulated insulin secretion (GSIS) in β-cells. The effect is dose-dependent and stimulates the ERK/MAPK signaling pathway. We further demonstrated that oleuropein inhibits the cytotoxicity induced by amylin amyloids, a hallmark feature of type 2 diabetes. We demonstrated that these dual functions are structure-specific: we identified the 3-hydroxytyrosol moiety of oleuropein as the main functional entity responsible for amyloid inhibition, but the novel GSIS function requires the entire structure scaffold of the molecule.

Study Type : In Vitro Study

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Sayer Ji
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