alexa Potential Benefits of Annatto Tocotrienol in Glucocorticoid Induced Osteoporosis: An Animal Study
ISSN: 2329-9509

Journal of Osteoporosis and Physical Activity
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Research Article

Potential Benefits of Annatto Tocotrienol in Glucocorticoid Induced Osteoporosis: An Animal Study

Ima Nirwana Soelaiman1*, Elvy Suhana Mohd Ramli2, Farihah Suhaimi2 and Fairus Ahmad2

1Department of Pharmacology, Universiti Kebangsaan Malaysia Jalan Yaacob Latif, Malaysia

2Department of Anatomy, Universiti Kebangsaan Malaysia Jalan Yaacob Latif, Malaysia

Corresponding Author:
Prof. Dr. Ima Nirwana Soelaiman
Department of Pharmacology
Faculty of Medicine, Universiti Kebangsaan Malaysia Jalan Yaacob Latif
Bandar Tun Razak, Cheras, Kuala Lumpur, Malaysia
Tel: 60391455003
Fax: 60391456633
E-mail: [email protected]

Received date: June 08, 2017; Accepted date: June 14, 2017; Published date: June 21, 2017

Citation: Soelaiman IN, Ramli ESM, Suhaimi F, Ahmad F (2017) Potential Benefits of Annatto Tocotrienol in Glucocorticoid Induced Osteoporosis: An Animal Study. J Osteopor Phys Act 5:203. doi:10.4172/2329-9509.1000203

Copyright: © 2017 Soelaiman IN, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.



Long-term glucocorticoid treatment induces oxidative stress that cause osteoporosis is an antioxidant and has protective effects against free radical associated diseases. Annatto tocotrienol is a tocopherol free tocotrienol mixture. The purpose of this study was to determine the effects of annatto tocotrienol against glucocorticoid-induced osteoporosis. 32 adult male Sprague-Dawley rats were used in this study. 16 rats were adrenalectomized and divided into two groups; Adrx+Dexa and Adrx+Dexa+ATT and were administered with intramuscular injection of dexamethasone 120 μg/kg/ day. Eight rats underwent sham procedure and the other 8 serves as baseline group. The Adrx+Dexa group was given vehicle palm olein 0.1 ml/kg/day orally while Adrx+Dexa+ATT group was supplemented with annatto tocotrienol 60 mg/ kg/day. The sham operated rats were given vehicle palm olein 0.05 ml/kg/day by intramuscular injection and 0.1 ml/ kg/day orally. The treatments were given for two months before the rats were euthanized. The femurs were tested for biomechanical strength and analyzed for bone histomorphometry. The results showed that long-term glucocorticoid treatment increased, bone resorption marker (CTX), lipid peroxidation; and decreased superoxide dismutase (SOD) activity with no significant changes to serum osteocalcin. Bone biomechanical strength was compromised with reduction in structural, static and dynamic parameters of bone histomorphometry. Annatto tocotrienol supplementation had maintained lipid peroxidation, CTX level, SOD activity and protected bone histomorphometric parameters and biomechanical strength. The results of this study suggested that annatto tocotrienol may have protective effects against osteoporosis induced by glucocorticoids and may be used as prophylaxis for patients on long term glucocorticoid therapy.


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