Journal of Food and Nutrition Research
ISSN (Print): 2333-1119 ISSN (Online): 2333-1240 Website: http://www.sciepub.com/journal/jfnr Editor-in-chief: Prabhat Kumar Mandal
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Journal of Food and Nutrition Research. 2014, 2(8), 524-531
DOI: 10.12691/jfnr-2-8-15
Open AccessArticle

Influence of Tea Polyphenols on the Formation of Advanced Glycation End Products (AGEs) in vitro and in vivo

Shanli Peng1 and Genyi Zhang1, 2,

1School of Food Science and Technology, Jiangnan University, Wuxi, China

2State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China

Pub. Date: August 17, 2014

Cite this paper:
Shanli Peng and Genyi Zhang. Influence of Tea Polyphenols on the Formation of Advanced Glycation End Products (AGEs) in vitro and in vivo. Journal of Food and Nutrition Research. 2014; 2(8):524-531. doi: 10.12691/jfnr-2-8-15

Abstract

The effects of tea polyphenols (TP) on the formation of advanced glycation end products (AGEs) were investigated using glutamicacid - glucose and BSA - glucose model systems at 90°C and 37°C, respectively. The spectral characteristics of glycation products were measured. Additionally, a type 1 diabetesmellitus (DM) animal model of Kunming mice by injecting streptozocin (STZ) was used to study the formation of AGEs in vivo. Tea polyphenols (TP) were given to mice at a dose of 200mg/kg bodyweight continuously for 8 weeks. Mice were then sacrificed and the glycosylated hemoglobin (GHbA) and fluorescence of AGEs in serum were measured to illustrate the effects of TP on protein glycation in vivo. The in vitro experiment results showed that the production of AGEs was decreased by TP in a dose-dependent manner TP addition reduced the accumulation of GHbA and AGEs in DM mice and relieved the symptoms of diabetic nephropathy (DN), which is an important indicator of diabetic complications caused by AGEs. Thus, TP might be used as an important ingredient in dietary approaches for intervention of diabetes and improved health.

Keywords:
tea polyphenols advanced glycation end products (AGEs) diabetes mellitus antioxdation

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