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Nanoparticles prepared from the water extract of Gusuibu (Drynaria fortunei J. Sm.) protects osteoblasts against insults and promotes cell maturation

Authors Hsu C-K, Liao M-H, Tai Y-T, Liu S-H, Ou K-L, Fang H-W, Lee I-J, Chen R-M

Published 6 July 2011 Volume 2011:6 Pages 1405—1413

DOI https://dx.doi.org/10.2147/IJN.S20473

Review by Single-blind

Peer reviewer comments 4

Chung-King Hsu1,2, Mei-Hsiu Liao3, Yu-Tyng Tai4, Shing-Hwa Liu5, Keng-Liang Ou6, Hsu-Wei Fang7, I-Jung Lee8, Ruei-Ming Chen2,3
1
Institute of Materials Science and Engineering, National Taipei University of Technology, 2Cell Physiology and Molecular Image Research Center, Taipei Medical University-Wan Fang Medical Center, 3Graduate Institute of Medical Sciences, Taipei Medical University, 4Department of Anesthesiology, Taipei Medical University-Wan Fang Medical Center, 5Institute of Toxicology, College of Medicine, National Taiwan University, 6Graduate Institute of Biomedical Materials and Engineering, Taipei Medical University, 7Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, 8Division of Information and Herbarium, National Research Institute of Chinese Medicine, Taipei, Taiwan

Abstract: Our previous study showed that Gusuibu (Drynaria fortunei J. Sm.) can stimulate osteoblast maturation. This study was further designed to evaluate the effects of nanoparticles prepared from the water extract of Gusuibu (WEG) on osteoblast survival and maturation. Primary osteoblasts were exposed to 1, 10, 100, and 1000 µg/mL nanoparticles of WEG (nWEG) for 24, 48, and 72 hours did not affect morphologies, viability, or apoptosis of osteoblasts. In comparison, treatment of osteoblasts with 1000 µg/mL WEG for 72 hours decreased cell viability and induced DNA fragmentation and cell apoptosis. nWEG had better antioxidant bioactivity in protecting osteoblasts from oxidative and nitrosative stress-induced apoptosis than WEG. In addition, nWEG stimulated greater osteoblast maturation than did WEG. Therefore, this study shows that WEG nanoparticles are safer to primary osteoblasts than are normal-sized products, and may promote better bone healing by protecting osteoblasts from apoptotic insults, and by promoting osteogenic maturation.

Keywords: Gusuibu, nanoparticles, cell protection, osteoblast maturation

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