Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/7564
Title: Improvement of bone properties and enhancement of mineralization by ethanol extract of Fructus Ligustri Lucidi
Authors: Zhang, Y
Leung, PC
Che, CT
Chow, HK
Wu, CF
Wong, MS 
Keywords: Bone
Fructus Ligustri Lucidi
Mineralization
Ovariectomy
UMR-106
Issue Date: 2008
Publisher: Cambridge University Press
Source: British journal of nutrition, 2008, v. 99, no. 3, p. 494-502 How to cite?
Journal: British journal of nutrition 
Abstract: Fructus Ligustri Lucidi (FLL), a kidney-tonifying Chinese herb, was shown to regulate Ca balance in ovariectomized (OVX) rats in our previous study. This study investigated whether it could improve bone properties in aged normal and OVX rats and increase osteoblastic differentiation in rat osteoblast-like UMR-106 cells. Ten-month-old aged rats underwent sham-operation or ovariectomy, were orally administered with FLL extracts or its vehicle and fed with diets containing different levels of Ca (LCD, 0-1% Ca; MCD, 0-6 % Ca; HCD, 1-2 % Ca) for 12 weeks. Ovariectomy induced bone loss at multiple-sites of both tibia and femur in all rats being studied. FLL extract increased bone mineral density and bone mineral content at both tibial and femoral diaphysis as well as the lumbar vertebra (LV-2) in rats fed either LCD or MCD. In addition, FLL increased biomechanical strength of the tibial diaphysis in these rats. Combination of FLL and high-Ca diet significantly improved bone mass of cortical and trabecular bone at appendicular bones and LV-2 and decreased bone loss associated with ovarietomy and low-Ca feeding. Treatment of UMR-106 cells with FLL extracts accelerated the formation of calcified matrix and increased extracellular Ca and P depositions in time- and dose-dependent manner. The level of mineralization reached a maximum by 6d incubation at the dosage of 10μg FLL extract/ml. Our study indicated that FLL extract could improve bone properties in aged rats possibly via its direct action on osteoblastic cells by enhancement of the mineralization process.
URI: http://hdl.handle.net/10397/7564
ISSN: 0007-1145
EISSN: 1475-2662
DOI: 10.1017/S0007114507801589
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