Abstract
Under diabetic conditions, oxidative stress is induced and the JNK pathway is activated, which is involved in deterioration of pancreatic β-cell function found in diabetes. Oxidative stress and/or activation of the JNK pathway suppress insulin gene expression, accompanied by reduction of PDX-1 DNA binding activity. Treatment with antioxidants and/or suppression of the JNK pathway protect β-cells from some of the toxic effects of hyperglycemia. The JNK pathway is also involved in the progression of insulin resistance; suppression of the JNK pathway in obese diabetic mice markedly improves insulin resistance and ameliorates glucose tolerance. The phosphorylation state of key molecules for insulin signaling is altered upon modification of the JNK pathway. Taken together, the JNK pathway plays a crucial role in progression of insulin resistance as well as β-cell dysfunction found in diabetes and thus could be a potential therapeutic target for diabetes.
Keywords: diabetic conditions, JNK pathway, insulin
Current Diabetes Reviews
Title: Oxidative Stress and the JNK Pathway in Diabetes
Volume: 1 Issue: 1
Author(s): Hideaki Kaneto, Taka-aki Matsuoka, Yoshihisa Nakatani, Dan Kawamori, Munehide Matsuhisa and Yoshimitsu Yamasaki
Affiliation:
Keywords: diabetic conditions, JNK pathway, insulin
Abstract: Under diabetic conditions, oxidative stress is induced and the JNK pathway is activated, which is involved in deterioration of pancreatic β-cell function found in diabetes. Oxidative stress and/or activation of the JNK pathway suppress insulin gene expression, accompanied by reduction of PDX-1 DNA binding activity. Treatment with antioxidants and/or suppression of the JNK pathway protect β-cells from some of the toxic effects of hyperglycemia. The JNK pathway is also involved in the progression of insulin resistance; suppression of the JNK pathway in obese diabetic mice markedly improves insulin resistance and ameliorates glucose tolerance. The phosphorylation state of key molecules for insulin signaling is altered upon modification of the JNK pathway. Taken together, the JNK pathway plays a crucial role in progression of insulin resistance as well as β-cell dysfunction found in diabetes and thus could be a potential therapeutic target for diabetes.
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Cite this article as:
Kaneto Hideaki, Matsuoka Taka-aki, Nakatani Yoshihisa, Kawamori Dan, Matsuhisa Munehide and Yamasaki Yoshimitsu, Oxidative Stress and the JNK Pathway in Diabetes, Current Diabetes Reviews 2005; 1 (1) . https://dx.doi.org/10.2174/1573399052952613
DOI https://dx.doi.org/10.2174/1573399052952613 |
Print ISSN 1573-3998 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-6417 |
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