Fish oil in comparison to folinic acid for protection against adverse effects of methotrexate chemotherapy on bone

Raghu Nadhanan, Rethi and Fan, Chia Ming and Su, Yu Wen and Howe, Peter R. C. and Xian, Cory J. (2014) Fish oil in comparison to folinic acid for protection against adverse effects of methotrexate chemotherapy on bone. Journal of Orthopaedic Research, 32 (4). pp. 587-596. ISSN 0736-0266

Abstract

Methotrexate (MTX) chemotherapy is known to cause bone loss which lacks specific preventative treatments, although clinically folinic acid is often used to reduce MTX toxicity in soft tissues. This study investigated damaging effects of MTX injections (0.75 mg/kg/day for 5 days) in rats and potential protective benefits of fish oil (0.25, 0.5, or 0.75 ml/100 g/day) in comparison to folinic acid (0.75 mg/kg) in the tibial metaphysis. MTX treatment significantly reduced height of primary spongiosa and volume of trabecular bone while reducing density of osteoblasts. Consistently, MTX reduced osteogenic differentiation but increased adipogenesis of bone marrow stromal cells, accompanied by lower mRNA expression of osteogenic transcription factors Runx2 and Osx, but an up-regulation of adipogenesis-related genes FABP4 and PPAR-γ. MTX also increased osteoclast density, bone marrow osteoclast formation, and mRNA expression of proinflammatory cytokines IL-1, IL-6, TNF-α, and RANKL/OPG ratio in bone. Fish oil (0.5 or 0.75 ml/100 g) or folinic acid supplementation preserved bone volume, osteoblast density, and osteogenic differentiation, and suppressed MTX-induced cytokine expression, osteoclastogenesis, and adipogenesis. Thus, fish oil at 0.5 ml/100 g or above is as effective as folinic acid in counteracting MTX-induced bone damage, conserving bone formation, suppressing resorption and marrow adiposity, suggesting its therapeutic potential in preventing bone loss during MTX chemotherapy. © 2013 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 32:587-596, 2014.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Files associated with this item cannot be displayed due to copyright restrictions.
Faculty / Department / School: No Faculty
Date Deposited: 02 Jun 2017 06:12
Last Modified: 02 Jun 2017 06:12
Uncontrolled Keywords: cancer chemotherapy; bone loss; bone marrow adiposity; fish oil; folinic acid
Fields of Research : 11 Medical and Health Sciences > 1112 Oncology and Carcinogenesis > 111205 Chemotherapy
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970111 Expanding Knowledge in the Medical and Health Sciences
Identification Number or DOI: 10.1002/jor.22565
URI: http://eprints.usq.edu.au/id/eprint/31582

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