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. 1993 Sep;53(3):174-9.
doi: 10.1007/BF01321834.

Short-term effects of organic silicon on trabecular bone in mature ovariectomized rats

M Hott  1 , C de Pollak, D Modrowski, P J Marie
Affiliations

Short-term effects of organic silicon on trabecular bone in mature ovariectomized rats

M Hott et al. Calcif Tissue Int. 1993 Sep.

Abstract

Silicon is known to ensure an essential role in the formation of cross-links between collagen and proteoglycans during bone growth. In this study, we have evaluated the short-term effects of a preventive treatment with silanol, a soluble organic silicon (Si), on trabecular bone in mature ovariectomized rats. Three-month-old rats were sham-operated (sham) or were ovariectomized (OVX) and treated with 10 micrograms/kg/day of 17 beta estradiol (E2), or with 0.1 mg Si/kg/day or 1.0 mg Si/kg/day of silanol for 1 month. Plasma alkaline phosphatase and osteocalcin levels were increased by 50% in OVX rats compared with sham rats and were corrected by E2 but not by silanol treatment. The trabecular bone volume measured at the tibial metaphysis was decreased by 48%, and histomorphometric indices of bone resorption and formation were increased in OVX rats compared with sham, and these parameters were corrected by E2 treatment. Treatment of OVX rats with silanol decreased the osteoclast surface by 31% and the number of osteoclasts by 20%. The mineral apposition rate, the bone formation rate, and the osteoblast surface at the tibia metaphyseal area were increased by 30% at the higher dose of silanol compared with OVX rats. In contrast, silanol treatment had no effect on the periosteal apposition rate. The reduction of the metaphyseal bone resorption and the increased bone formation induced by silanol resulted in a slight improvement of the trabecular bone volume (+14%) compared with controls.(ABSTRACT TRUNCATED AT 250 WORDS)

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