Oleuropein-Rich Diet Attenuates Hyperglycemia and Impaired Glucose Tolerance in Type 2 Diabetes Model Mouse

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• 作者：Kazutoshi Murotomi ; Aya Umeno ; Mayu Yasunaga ; Mototada Shichiri ; Noriko Ishida ; Taisuke Koike ; Toshiki Matsuo ; Hiroko Abe ; Yasukazu Yoshida ; Yoshihiro Nakajima
• 刊名：Journal of Agricultural and Food Chemistry
• 出版年：2015
• 出版时间：August 5, 2015
• 年：2015
• 卷：63
• 期：30
• 页码：6715-6722
• 全文大小：471K
• ISSN：1520-5118

文摘

Oleuropein, a phenolic compound found in abundance in olive leaves, has beneficial effects on various diseases. However, it is unknown whether an oleuropein-rich diet is efficacious against type 2 diabetic phenotypes. In this study, we investigated the effects of the oleuropein-containing supplement OPIACE, whose oleuropein content exceeds 35% (w/w), on the diabetic phenotypes in type 2 diabetes model Tsumura Suzuki Obese Diabetes (TSOD) mouse. TSOD mice were fed OPIACE at 4 weeks of age, i.e., before the TSOD mice exhibited diabetic phenotypes. We revealed that OPIACE attenuated hyperglycemia and impaired glucose tolerance in TSOD mice over the long-term (from 10 to 24 weeks of age) but had no effect on obesity. Furthermore, we demonstrated that OPIACE mildly reduced oxidative stress in TSOD mice by 26.2% and attenuated anxiety-like behavioral abnormality in aged TSOD mice. The results suggest that oleuropein suppresses the progression of type 2 diabetes and diabetes-related behavioral abnormality over the long-term.