Promoting osteoblast differentiation by the flavanes from Huangshan Maofeng tea is linked to a reduction of oxidative stress

被引：29

作者：

Zeng, Xiaobin ^{[1
]}

Tian, Jun ^{[2
]}

Cai, Kangyong ^{[3
]}

Wu, Xin ^{[1
]}

Wang, Yang ^{[4
]}

Zheng, Yayuan ^{[1
]}

Su, Yanjie ^{[1
]}

Cui, Liao ^{[1
]}

机构：

[1] Guangdong Med Coll, Dept Pharmacol, Guangdong Key Lab Res & Dev Nat Drugs, Zhanjiang 524023, Guangdong, Peoples R China

[2] Jiangsu Normal Univ, Coll Life Sci, Xuzhou 221116, Jiangsu, Peoples R China

[3] Guangdong Med Coll, Anal Ctr Guangdong Med Coll, Zhanjiang 524023, Guangdong, Peoples R China

[4] Shenzhen Xinpeng Shengwu Gongcheng Co Ltd, Shenzhen 518055, Guangdong, Peoples R China

来源：

PHYTOMEDICINE | 2014年 / 21卷 / 03期

基金：

中国国家自然科学基金;

关键词：

Flavane; Osteoporosis; Oxidative stress; Green tea; BONE-MINERAL DENSITY; GREEN TEA; FREE-RADICALS; POLYPHENOLS; DRINKING; MICROARCHITECTURE; PROLIFERATION; DETERIORATION; OSTEOPOROSIS; SYSTEMS;

D O I：

10.1016/j.phymed.2013.08.026

中图分类号：

Q94 [植物学];

学科分类号：

071001 [植物学];

摘要：

Epidemiological evidence has shown an association between tea consumption and the prevention of bone loss in the elderly. Previous studies indicated that green tea exerted osteoprotective effect in vivo. This study aims to investigate the constituents in Huangshan Maofeng tea and systemically evaluate their antioxidative and osteogenic effects in vitro. Five flavanes, isolated from Huangshan Maofeng tea, showed effects on proliferation of osteoblastic cells and ameliorated H2O2-induced C2C12 mouse myoblast cell apoptosis at 3.125-50 mu g/ml. (-)-Epicatechin observably increased alkaline phosphatase (ALP) activity and hydroxyproline content. (-)-Epiafzelechin at 25 mu g/ml significantly increased the area of mineralized bone nodules. The activities of flavanes in promoting osteblastic proliferation and differentiation are positively correlated with activities in protecting against apoptosis in C2C12 cells. It indicates that anti-osteoporosis effect of these flavanes may be linked to their antioxidative activity. The observed effects of these flavanes suggest that these flavanes may have beneficial effects on bone health. (C) 2013 Published by Elsevier GmbH.

引用

页码：217 / 224

页数：8

共 45 条

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