Involvement of Oxidative Stress in Age-Related Bone Loss

被引:130
作者
Zhang, Yu-Bin [1 ]
Zhong, Zhao-Ming [1 ]
Hou, Gang [1 ]
Jiang, Hui [1 ]
Chen, Jian-Ting [1 ]
机构
[1] So Med Univ, Dept Orthoped & Spinal Surg, Nanfang Hosp, Guangzhou 510515, Guangdong, Peoples R China
基金
中国国家自然科学基金;
关键词
aging; oxidative stress; bone loss; bone mineral density; advanced oxidation protein products; malondialchehyche; superoxide dismutase; histomorphometry; PROTEIN PRODUCTS; SUPEROXIDE-DISMUTASE; LIPID-PEROXIDATION; RATS; OSTEOPOROSIS; MEN; MITOCHONDRIA; RISEDRONATE; DENSITY; BRAIN;
D O I
10.1016/j.jss.2011.02.033
中图分类号
R61 [外科手术学];
学科分类号
100210 [外科学];
摘要
Background. Age-related bone loss is a primary factor in osteoporosis and osteoporotic fractures in the elderly. Although oxidative stress was reported to play an important role in aging and postmenopausal bone loss, data on relating oxidative stress to age-related bone loss were scanty. This study aimed to investigate whether oxidative stress is involved in age-related bone loss. Materials and Methods. Young, adult, and old male Wistar rats were used in this study. Each group consisted of 26 animals. Oxidative stress parameters, such as advanced oxidation protein products (AOPP), malondialchehyche (MDA), and superoxide dismutase (SOD), were measured in the plasma and right femur homogenates. Bone mineral density (BMD) of left femurs and histomorphometry of tibias were investigated. Results. In the plasma and femurs, the levels of AOPP and MDA were increased and the SOD activity was decreased with aging. Femur BMD decreased significantly in old rats. Bone histomorphometry indicated decreases in cancellous bone volume, trabecular thickness, percent labeled perimeter, mineral apposition rate, and bone formation rate with aging. The AOPP levels in plasma and femur, and MDA levels in the plasma were negatively correlated with the femur BMD. The SOD activity in plasma and femur was positively correlated with the femur BMD. Conclusions. Increase of oxidative stress and bone loss appear with aging. Oxidative stress is involved in age-related bone loss and might play an important role in the pathology of age-related bone loss. (C) 2011 Elsevier Inc. All rights reserved.
引用
收藏
页码:E37 / E42
页数:6
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