Role of copper ion in the pathogenesis of type 2 diabetes.

Abstract:

:Reactive oxygen species (ROS) are induced under diabetic conditions and are likely associated with the development of type 2 diabetes. It is also known that ROS production is facilitated in the presence of copper ion through the Fenton reaction. The aim of this study was to examine the involvement of copper ion in the pathogenesis of type 2 diabetes and to evaluate the potential usefulness of a copper chelating agent for the treatment of type 2 diabetes. First, both serum copper ion and ROS levels in diabetic C57BL/KsJ-db/db mice were significantly higher compared to those in nondiabetic mice. Second, we treated diabetic db/db mice with a copper chelating agent tetrathiomolybdate and examined the effects on the development of type 2 diabetes. As the results, both serum copper ion and ROS levels were significantly decreased by the treatment, which were equivalent to those in non-diabetic mice. Consequently, the treatment with a copper chelating agent reduced insulin resistance and ameliorated glucose intolerance in diabetic db/db mice. In addition, serum triglyceride levels were also decreased by the treatment. In conclusion, our present results suggest that copper ion is involved in the development of type 2 diabetes and thereby a potential therapeutic target for diabetes.

journal_name

Endocr J

journal_title

Endocrine journal

authors

Tanaka A,Kaneto H,Miyatsuka T,Yamamoto K,Yoshiuchi K,Yamasaki Y,Shimomura I,Matsuoka TA,Matsuhisa M

doi

10.1507/endocrj.k09e-051

subject

Has Abstract

pub_date

2009-01-01 00:00:00

pages

699-706

issue

5

eissn

0918-8959

issn

1348-4540

pii

JST.JSTAGE/endocrj/K09E-051

journal_volume

56

pub_type

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