title: Effects of tetracyclines on bones: an ambiguous question needs to be clarified.
abstract: Tetracyclines have been widely used in bone histomorphometry to label new bone formation and apposition rate. However, most studies of tetracyclines have also shown their strong inhibitory action on osteoclasts and their effects on osteoblast activities as well. To even obtain the in-depth understanding on this issue, we have reviewed related studies in "Pubmed" by searching the keywords "tetracyclines and osteoclast", "tetracyclines and osteoblast", which retrieved 118 and 162 related documents, respectively. Among these papers, some described the application of tetracyclines as fluorescent marker in bone histomorphometry, while others discussed their role in protection of bone metabolism partly through inhibiting osteoclastogenesis or bone resorption and through enhancing osteogenesis. Based on the above mentioned, it seems that tetracyclines used as bone labeling markers may affect the results of bone histomorphometry to some extent. To even confirm the effect of tetracyclines on bones cells (osteoblast, osteoclast) and in vivo bone remodeling, related research work has been performed in our research team which indicated quite different results in vivo and in vitro. Therefore, the influence of tetracyclines on bones may differ in terms of different conditions which need to be further elucidated.
authors: Translational Medicine R&D Center, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China.
authors: Wenxiang
authors: W
authors: Cheng
authors: Ye
authors: Y
authors: Yue
authors: Wenbin
authors: W
authors: Fan
authors: Yiping
authors: Y
authors: Hu
authors: Xinluan
authors: X
authors: Wang
authors: Xiaohua
authors: X
authors: Pan
authors: Xiaoxiao
authors: X
authors: Zhou
authors: Ling
authors: L
authors: Qin
authors: Peng
authors: P
authors: Zhang
mesh_terms: D000818:Animals; D000900:Anti-Bacterial Agents / Q000494:pharmacology*; D015415:Biomarkers / Q000378:metabolism; D001846:Bone Development / Q000187:drug effects*; D016723:Bone Remodeling / Q000187:drug effects; D001842:Bone and Bones / Q000187:drug effects*; D006801:Humans; D010006:Osteoblasts / Q000187:drug effects; D010010:Osteoclasts / Q000187:drug effects; D013329:Structure-Activity Relationship; D013754:Tetracyclines / Q000494:pharmacology*
chemical_list: D000900:Anti-Bacterial Agents; D015415:Biomarkers; D013754:Tetracyclines