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International Journal of Medicinal Mushrooms
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ISSN Imprimer: 1521-9437
ISSN En ligne: 1940-4344

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International Journal of Medicinal Mushrooms

DOI: 10.1615/IntJMedMushrooms.v18.i1.50
pages 39-47

Protective Effects of Black Hoof Medicinal Mushroom from Korea, Phellinus linteus (Higher Basidiomycetes), on Osteoporosis In Vitro and In Vivo

In-Ho Kim
Korea Food Research Institute, Seongnam, South Korea
Min-Yu Chung
Korea Food Research Institute, Seongnam, South Korea
Ji Young Shin
Korea Food Research Institute, Seongnam, South Korea
Daeseok Han
Korea Food Research Institute, Seongnam, South Korea

RÉSUMÉ

The protective effect of Phellinus linteus (ethanol extract) against osteoporosis was investigated using the Saos-2 human osteoblast-like cell line and osteoclasts. A nontoxic concentration of Ph. linteus (10-2 to 10-8 mg mL-1) increased alkaline phosphatase (ALP) (EC 3.1.3.1) activity to a larger extent than soy did. Ph. linteus also attenuated the number and the activity of tartrate-resistant acid phosphatase-positive multinucleated osteoclasts. These results indicate that Ph. linteus likely regulated both osteoblasts and osteoclasts, contributing to the protection against osteoporosis. The protective effect of Ph. linteus was examined in ovariectomized (OVX) rats. Histological analysis indicates that Ph. linteus improved trabecular bone mass and reduced osteoclast frequency without affecting lipid droplet accumulation in the femur of OVX rats. A Ph. linteus supplementation for 12 weeks also significantly increased serum ALP activity and reduced urinary deoxypyridinoline level in OVX rats. Ultimately, we found that 12-week Ph. linteus supplementation increased the bone accumulation of minerals, including calcium, magnesium, and phosphorus. Collectively, Ph. linteus protected against osteoporosis by balancing the number of osteoblasts and osteoclasts, which was particularly associated with increased ALP activity in vitro and in vivo and mineral accumulation in bone.


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