Abstract
Previous studies reported that statins showed positive effects on bone in both human and animal models. This study aimed to investigate the effects of atorvastatin on the prevention of osteoporosis and dyslipidemia in ovariectomized rats fed with high-fat emulsion. The 3-month-old female rats were subjected to either sham operations (n = 8) or ovariectomized operations (OVX, n = 24). The OVX rats were orally administered deionized water (n = 8) or standardized high-fat emulsion without (n = 8) or with atorvastatin (n = 8). All rats were injected twice with calcein before sacrificed for the purpose of double in vivo labeling. After 12 weeks, all rats were sacrificed under anesthesia. Biochemistry, histomorphometry, mechanical test, micro-computed tomography analysis, mechanical test, histology, and component analysis were performed. We found that high-fat emulsion significantly decreased body weight, bone formation, collagen content of bone, and bone biomechanics, while increased blood, liver, and bone marrow lipids. Atorvastatin treatment prevented dyslipidemia, reversed hepatic steatosis, optimized composition of bone, and improved bone mechanical properties. The current study provided further evidence that atorvastatin might be useful for the treatment of osteoporotic patients with dyslipidemia.
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Acknowledgments
This project was funded by Science & Technology Innovation Fund of Guangdong Medical College (No STIF201104) and Science and Technology Planning Project of Zhanjiang (No 2012C3102015). The works were also supported in part by SMART program, Lui Che Woo Institute of Innovative Medicine, Faculty of Medicine, The Chinese University of Hong Kong. We wish to thank Dr. David William Green at the University of Hong Kong for his contribution on English language editing and grammar correction of the manuscript.
Conflict of Interest
Sien Lin, Jianping Huang, Ziwei Fu,Yanlong Liang, Haiyou Wu, Liangliang Xu, Yuxin Sun, Wayne YW Lee, Tie Wu, Ling Qin, Liao Cui, and Gang Li declare that they have no conflict of interest.
Human and Animal Rights and Informed Consent
All animal experiments were approved by the Academic Committee on the Ethics of Animal Experiments of the Guangdong Medical College, Zhanjiang, China. Permit Number: SYXK (GUANGDONG) 2008-0007. All procedures performed in studies involving animals were in accordance with the ethical standards of Guangdong Medical College.
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Sien Lin and Jianping Huang have contributed equally to this study.
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Lin, S., Huang, J., Fu, Z. et al. The Effects of Atorvastatin on the Prevention of Osteoporosis and Dyslipidemia in the High-Fat-Fed Ovariectomized Rats. Calcif Tissue Int 96, 541–551 (2015). https://doi.org/10.1007/s00223-015-9975-7
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DOI: https://doi.org/10.1007/s00223-015-9975-7