Title

Preventing bone loss and weight gain with combinations of vitamin d and phytochemicals

Document Type

Article

Publication Date

2011

Abstract

Vitamin D and certain natural compounds have been shown to regulate both lipid metabolism and bone formation. Treatments that prevent or reverse age-related increase in bone marrow adiposity could both increase new bone formation and inhibit bone destruction. We tested the hypothesis that dietary supplementation with combinations of vitamin D and phytochemicals inhibits bone loss and decreases adiposity to a greater extent than control or vitamin D-alone diets. Aged ovariectomized female rats (12 months old, n=50, initial body weight=240g) were given control (AIN-93M diet), vitamin D (2,400IU/kg), or vitamin D plus resveratrol (16, 80, or 400mg/kg of diet [low, medium, and high dose, respectively]), quercetin (80, 400, or 2,000mg/kg of diet), and genistein (64, 256, or 1,040mg/kg of diet) for 8 weeks. The high-dose treatment (vitamin D+400mg/kg resveratrol+2,000mg/kg quercetin+1,040mg/kg genistein) reduced body weight gain (P<.05) and the fat pad weights (P<.05). This treatment also increased the serum concentration of insulin-like growth factor-1 (P<.05) and the bone mineral content of the femur. Micro-computed tomography and histomorphometric analyses indicated that the high-dose treatment prevented loss of trabecular bone (P<.05) and reduced marrow adipocytes (P<.001) and osteoclasts (P<.05) compared with the control and vitamin D alone (P<.05). We conclude that aged ovariectomized female rats supplemented with vitamin D combined with genistein, quercetin, and resveratrol had improved bone mineral density and reduced body weight gain and a significant decrease in bone marrow adipocytes. The synergistic effects of a combination of phytochemicals with vitamin D may be effective in reducing bone loss and weight gain after menopause. © Copyright 2011, Mary Ann Liebert, Inc. and Korean Society of Food Science and Nutrition 2011.

Publication Title

Journal of Medicinal Food

Volume

14

Issue

11

First Page

1352

Last Page

1362

Comments

This article was published in Journal of Medicinal Food, Volume 14, Issue 11, Pages 1352-1362.

The published version is available at http://dx.doi.org/10.1089/jmf.2010.0232.

Copyright © 2011 Liebert, Inc.

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