Abstract: Bioactivity-guided fractionation led to the successful isolation of antiosteoporotic components, i.e. physicion (1), rubiadin-1-methyl ether (2), 2-hydroxy-1-methoxy- anthraquinone (3), 1,2-dihydroxy-3-methylanthraquinone (4), 1,3,8-trihydroxy-2-methoxy- anthraquinone (5), 2-hydroxymethyl-3-hydroxyanthraquinone (6), 2-methoxyanthraquinone (7) and scopoletin (8) from an ethanolic extract of the roots of Morinda officinalis. Compounds 4-8 are isolated for the first time from M. officinalis. Among them, compounds 2 and 3 promoted osteoblast proliferation, while compounds 4, 5 increased osteoblast ALP activity. All of the isolated compounds inhibited osteoclast TRAP activity and bone resorption, and the inhibitory effects on osteoclastic bone resorption of compounds 1 and 5 were stronger than that of other compounds. Taken together, antiosteoporotic activity of M. officinalis and its anthraquinones suggest therapeutic potential against osteoporosis.
Keywords: Morinda officinalis; Anthraquinones; Osteoblast; Osteoclast; Osteoporosis
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Wu, Y.-B.; Zheng, C.-J.; Qin, L.-P.; Sun, L.-N.; Han, T.; Jiao, L.; Zhang, Q.-Y.; Wu, J.-Z. Antiosteoporotic Activity of Anthraquinones from Morinda officinalis on Osteoblasts and Osteoclasts. Molecules 2009, 14, 573-583.
Wu Y-B, Zheng C-J, Qin L-P, Sun L-N, Han T, Jiao L, Zhang Q-Y, Wu J-Z. Antiosteoporotic Activity of Anthraquinones from Morinda officinalis on Osteoblasts and Osteoclasts. Molecules. 2009; 14(1):573-583.
Wu, Yan-Bin; Zheng, Cheng-Jian; Qin, Lu-Ping; Sun, Lian-Na; Han, Ting; Jiao, Lei; Zhang, Qiao-Yan; Wu, Jin-Zhong. 2009. "Antiosteoporotic Activity of Anthraquinones from Morinda officinalis on Osteoblasts and Osteoclasts." Molecules 14, no. 1: 573-583.