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Effect of Platycodon Grandiflorum A. Extract in Bone Metabolism in Ovariectomized Rats  

Kim, Mi-Hyang (Department of Food and Nutrition, Silla University)
Publication Information
Journal of Physiology & Pathology in Korean Medicine / v.22, no.1, 2008 , pp. 183-188 More about this Journal
Abstract
Osteoporosis is one of the major health problem affecting postmenopausal women. Estrogen deficiency results in an increase in bone turnover, lead to bone resorption and an increase risk of fracture. The aim of this study was to evaluate the effects of Platycodon grandiflorum A. extract (PG) in bone metabolism in ovariectomized estrogen-deficient rats. Two groups were surgically ovariectomized (OVX). The third group was sham operated. Sprague-Dawley female rats were randomly assigned to the following groups : sham-operated rats (Sham), ovariectomized control rats (OVX-control), ovariectomized rats supplemented with PG at 50mg/kg body wt (OVX-PG50) The Platycodon grandiflorum extracts were orally administrated at 1mL per day. The ovariectomy caused a decreasing in the levels of collagen content in bone, cartilage and skin tissues. However PG group, supplementation with Platycodon grandiflorum extract, were increased the level of collagen content in bone, cartilage and skin tissues than OVX-control group. PG group had a higher content of pyridinoline in collagen than OVX-control group. Alkaline phosphatase activity on serum were decreased after supplemented with the PG extract. These results might be expected that Platycodon grandiflorum is believed to be possible protective effects in postmenopausal bone loss.
Keywords
Platycodon grandiflorum A.; bone loss; collagen; ALP; pyridinoline; ovariectomized rats;
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